CN102636006A - Dehydration process and equipment for biomass solid - Google Patents
Dehydration process and equipment for biomass solid Download PDFInfo
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- CN102636006A CN102636006A CN2012101125842A CN201210112584A CN102636006A CN 102636006 A CN102636006 A CN 102636006A CN 2012101125842 A CN2012101125842 A CN 2012101125842A CN 201210112584 A CN201210112584 A CN 201210112584A CN 102636006 A CN102636006 A CN 102636006A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention relates to a dehydration process and equipment for a biomass solid, and belongs to the technical field of biomass dehydration. The invention aims at provided with a dehydration process and the equipment which have the advantages that slight energy source is consumed, the cells in the biomass solid are ruptured, the moisture is dissolved out, the water ratio of the biomass solid is greatly reduced, and the burning value of the biomass solid is improved. The technical scheme adopted by the dehydration process for the biomass solid is as follows: the dehydration process is performed according to the following steps of: 1, fracturing the biomass solid; 2, filtering the biomass solid after fracture; 3, putting the biomass solid into a heating unit, heating, and then entering a pressure container to stay for 10 minutes, thus obtaining a biomass solid cracking liquid; 4, putting the biomass solid cracking liquid into a cooling unit and cooling; and 5, entering a water extractor and carrying out dehydration. The dehydration process and equipment provided by the invention are especially suitable for carrying out dehydration treatment on the biomass solid with higher water ratio.
Description
Technical field
A kind of dewatering process and equipment that is used for biomass solid of the present invention belongs to the technical field that living beings are dewatered.
Background technology
Living beings are meant the various organisms that form through photosynthesis, comprise all animals and plants and microorganism.And so-called biomass energy (biomass energy); Be exactly that solar energy is stored in the form of energy in the living beings with the chemical energy form; It derives from the photosynthesis of green plants directly or indirectly, can be converted into conventional solid-state, liquid state and fuel gas, and is inexhaustible, nexhaustible; Being a kind of regenerative resource, also is unique a kind of reproducible carbon source simultaneously.At present, a lot of countries are all in active research and development and use biomass energy.Biomass energy is contained in the organic matter that plant, animal and microorganism etc. can grow, and generally includes timber, reaches forest discarded object, agricultural wastes, water plant, oilseed plant, city and industrial organic waste, animal wastes etc.But in the Biomass Energy Utilization process, because the existence of biological cell in the living beings makes the moisture content in the living beings very high; And be difficult for removing, so a lot of living beings have negative combustion value owing to containing a large amount of water, this just need be before living beings act as a fuel utilization; Through various means; Farthest reduce the moisture content in the living beings, thereby make living beings in the process of output biomass energy that acts as a fuel, self reduces the energy that consumes because of transpiring moisture as far as possible.
The mud that produces of municipal sewage plant for example, the solid shape sediment that is meant in the process of disposing of sewage to be produced and with the mixture of the multi-form water that exists is a kind of organic waste, also is a kind of of living beings.Owing to contain a large amount of organic matters in the mud, certain calorific value is arranged, the method that present mud carries out reusing of energy source mainly is sludge incineration; A kind of is direct and the fuel mix burning; For example carry out the mixed combustion generating with coal dust, another kind is to carry out drying particles, and then the use that acts as a fuel.But because the existence of cell in the living beings makes the combination degree of internal water, adsorbed water and capillary water and mud granule very high, even carried out the thickening processing, moisture percentage in sewage sludge is still up to about 80%.High moisture content makes mud have negative calorific value, needs to consume a large amount of fuel and removes the moisture in the mud, so the cost of drying and incineration is all very high.
Summary of the invention
The present invention overcomes the deficiency of prior art, and the technical problem that solve provides a spot of energy of a kind of consumption, makes the cell rupture in the biomass solid, and moisture is separated out, and reduces the biomass solid moisture content greatly, improves the Processes and apparatus of biomass solid combustion value.
In order to solve the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of dewatering process that is used for biomass solid, carry out according to following step:
The first step, broken pending biomass solid, the diameter that makes biomass solid is less than 3mm;
In second step, the biomass solid after the filtration fragmentation filters out foreign material such as stone;
The 3rd step; Through compression pump the biomass solid that filtration obtains is sent into heater, and be heated to more than 210 ℃, get into then in the pressure vessel that pressure is 3-9Mpa and to stop 10-30 minute; Obtain the biomass solid lysate, the temperature in the said pressure vessel remains on 210-300 ℃;
In the 4th step, the biomass solid lysate that from pressure vessel, comes out gets in the cooling device and is cooled to below 100 ℃;
The 5th goes on foot, and cooled biomass solid lysate is sent in the dewaterer dewatered.
Increase biomass solid is heated between said second step and the 3rd step, or microwave treatment, or the step of chemical conditioning, improve the flowability of biomass solid.
The biomass solid lysate that from pressure vessel, comes out carries out getting into cooling device again after the heat recovery through heat exchange earlier and cools off in said the 4th step, and the heat of recovery is used for the biomass solid heating after filtering is improved the flowability of biomass solid.
A kind of dehydration equipment that is used for biomass solid; Comprise breaker, filter, heater, pressure vessel, cooling device, liquid storage tank and dewaterer; The inlet of breaker links to each other through conveyer with the outlet of the feed bin of splendid attire biomass solid, and the outlet of breaker links to each other with the inlet of filter, and the outlet of filter links to each other with the inlet of heater through first compression pump; The outlet of heater links to each other with the inlet of pressure vessel; The outlet of pressure vessel links to each other with the inlet of cooling device, and the outlet of cooling device is connected on the inlet of liquid storage tank, and the outlet of liquid storage tank links to each other with dewaterer through the lysate delivery pump; Described heater also is connected with the heating agent heater.
Be connected with heat reclaim unit between said first compression pump and the heater; The outlet of said pressure vessel links to each other with the inlet of cooling device through heat reclaim unit; The biomass solid lysate that from pressure vessel, comes out heats through the biomass solid that filters firm in described heat reclaim unit, improves the flowability of biomass solid.
Be connected with heat reclaim unit between said first compression pump and the heater, be connected with Intermediate Heat Exchanger between said pressure vessel and the cooling device, Intermediate Heat Exchanger links to each other with heat reclaim unit.
Be connected with microwave heating appts or chemical conditioning treating apparatus between described first compression pump and the heater.
Between said cooling device and the liquid storage tank pressure-reducing valve is installed.
Be connected with the 3rd compression pump between said heater and the pressure vessel.
Described heat reclaim unit, heater, cooling device and Intermediate Heat Exchanger are shell-and-tube heat exchanger, or are double pipe heat exchanger, or are lamella heat exchanger, or are the square runner heat exchanger of single channel.
The present invention compared with prior art has following beneficial effect.
The present invention consumes a spot of energy, and biomass solid is heated to uniform temperature, applies certain pressure again; Make the cell rupture in the biomass solid, moisture is separated out, again through dehydration; Greatly reduce the moisture content of biomass solid, improved the combustion value of biomass solid.
Description of drawings
Below in conjunction with accompanying drawing a kind of dehydration equipment that is used for biomass solid of the present invention is done further explanation.
Fig. 1 is a structural representation of the present invention, also is the structural representation of embodiment one.
Fig. 2 is the structural representation of the embodiment of the invention two.
Fig. 3 is the structural representation of the embodiment of the invention three.
Fig. 4 is the structural representation of the embodiment of the invention four.
Among the figure: 1 is feed bin, and 2 is conveyer, and 3 is breaker, and 4 is filter, and 5 is first compression pump; 6 is heat reclaim unit, and 7 is second compression pump, and 8 is heater, and 9 is the 3rd compression pump, and 10 is pressure vessel; 11 is the heating agent heater, and 12 is cooling device, and 13 is liquid storage tank, and 14 is the lysate delivery pump; 15 is dewaterer, and 16 is chemicals dosing plant, and 17 is microwave heating appts, and 18 is Intermediate Heat Exchanger.
The specific embodiment
A kind of dewatering process that is used for biomass solid of the present invention, carry out according to following step:
The first step, broken pending biomass solid, the diameter that makes biomass solid is less than 3mm;
In second step, the biomass solid after the filtration fragmentation filters out foreign material such as stone;
The 3rd step; Biomass solid through compression pump obtains filtration is sent into heater 8, and is heated to more than 210 ℃, gets into pressure then and be in the pressure vessel 10 of 3-9Mpa to stop 10-30 minute; Obtain the biomass solid lysate, the temperature in the said pressure vessel 10 remains on 210-300 ℃;
In the 4th step, the biomass solid lysate that from pressure vessel 10, comes out gets in the cooling device 12 and is cooled to below 100 ℃;
In the 5th step, cooled biomass solid lysate is sent into dehydration in the dewaterer 15.
Increase biomass solid is heated between said second step and the 3rd step, or microwave treatment, or the step of chemical conditioning, improve the flowability of biomass solid.
The biomass solid lysate that from pressure vessel 10, comes out carries out getting into cooling device 12 again after the heat recovery through heat exchange earlier and cools off in said the 4th step; The heat that reclaims is used for the biomass solid heating after filtering is improved the flowability of biomass solid.
Elaborate in the face of a kind of dehydration equipment that is used for biomass solid of the present invention down.
Embodiment one
As shown in Figure 1; A kind of dehydration equipment that is used for biomass solid of the present invention; Comprise breaker 3, filter 4, heater 8, pressure vessel 10, cooling device 12, liquid storage tank 13 and dewaterer 15; The inlet of breaker 3 links to each other through conveyer 2 with the outlet of the feed bin 1 of splendid attire biomass solid, and the outlet of breaker 3 links to each other with the inlet of filter 4, and the outlet of filter 4 links to each other with the inlet of heater 8 through first compression pump 5; The outlet of heater 8 links to each other with the inlet of pressure vessel 10; The outlet of pressure vessel 10 links to each other with the inlet of cooling device 12, and the outlet of cooling device 12 is connected on the inlet of liquid storage tank 13, and the outlet of liquid storage tank 13 links to each other with dewaterer 15 through lysate delivery pump 14; Described heater 8 also is connected with heating agent heater 11.
Between said cooling device 12 and the liquid storage tank 13 pressure-reducing valve is installed.
Be connected with the 3rd compression pump 9 between said heater 8 and the pressure vessel 10.
Described heater 8 is a shell-and-tube heat exchanger with cooling device 12, or is double pipe heat exchanger, or is lamella heat exchanger, or is the square runner heat exchanger of single channel.
Embodiment two
As shown in Figure 2; A kind of dehydration equipment that is used for biomass solid of the present invention; Comprise breaker 3, filter 4, heater 8, pressure vessel 10, cooling device 12, liquid storage tank 13 and dewaterer 15; The inlet of breaker 3 links to each other through conveyer 2 with the outlet of the feed bin 1 of splendid attire biomass solid, and the outlet of breaker 3 links to each other with the inlet of filter 4, and the outlet of filter 4 links to each other with the inlet of heater 8 through first compression pump 5; The outlet of heater 8 links to each other with the inlet of pressure vessel 10; The outlet of pressure vessel 10 links to each other with the inlet of cooling device 12, and the outlet of cooling device 12 is connected on the inlet of liquid storage tank 13, and the outlet of liquid storage tank 13 links to each other with dewaterer 15 through lysate delivery pump 14; Described heater 8 also is connected with heating agent heater 11.
Be connected with heat reclaim unit 6 between said first compression pump 5 and the heater 8; The outlet of said pressure vessel 10 links to each other with the inlet of cooling device 12 through heat reclaim unit 6; The biomass solid lysate that from pressure vessel 10, comes out heats through the biomass solid that filters firm in described heat reclaim unit 6, improves the flowability of biomass solid.
Between said cooling device 12 and the liquid storage tank 13 pressure-reducing valve is installed.
Be connected with the 3rd compression pump 9 between said heater 8 and the pressure vessel 10.
Described heat reclaim unit 6, heater 8 and cooling device 12 are shell-and-tube heat exchanger, or are double pipe heat exchanger, or are lamella heat exchanger, or are the square runner heat exchanger of single channel.
Embodiment three
As shown in Figure 3; A kind of dehydration equipment that is used for biomass solid of the present invention; Comprise breaker 3, filter 4, heater 8, pressure vessel 10, cooling device 12, liquid storage tank 13 and dewaterer 15; The inlet of breaker 3 links to each other through conveyer 2 with the outlet of the feed bin 1 of splendid attire biomass solid, and the outlet of breaker 3 links to each other with the inlet of filter 4, and the outlet of filter 4 links to each other with the inlet of heater 8 through first compression pump 5; The outlet of heater 8 links to each other with the inlet of pressure vessel 10; The outlet of pressure vessel 10 links to each other with the inlet of cooling device 12, and the outlet of cooling device 12 is connected on the inlet of liquid storage tank 13, and the outlet of liquid storage tank 13 links to each other with dewaterer 15 through lysate delivery pump 14; Described heater 8 also is connected with heating agent heater 11.
Be connected with heat reclaim unit 6 between said first compression pump 5 and the heater 8, be connected with Intermediate Heat Exchanger 18 between said pressure vessel 10 and the cooling device 12, Intermediate Heat Exchanger 18 links to each other with heat reclaim unit 6.
Between said cooling device 12 and the liquid storage tank 13 pressure-reducing valve is installed.
Be connected with the 3rd compression pump 9 between said heater 8 and the pressure vessel 10.
Described heat reclaim unit 6, heater 8, cooling device 12 and Intermediate Heat Exchanger 18 are shell-and-tube heat exchanger, or are double pipe heat exchanger, or are lamella heat exchanger, or are the square runner heat exchanger of single channel.
Embodiment four
As shown in Figure 4; A kind of dehydration equipment that is used for biomass solid of the present invention; Comprise breaker 3, filter 4, heater 8, pressure vessel 10, cooling device 12, liquid storage tank 13 and dewaterer 15; The inlet of breaker 3 links to each other through conveyer 2 with the outlet of the feed bin 1 of splendid attire biomass solid, and the outlet of breaker 3 links to each other with the inlet of filter 4, and the outlet of filter 4 links to each other with the inlet of heater 8 through first compression pump 5; The outlet of heater 8 links to each other with the inlet of pressure vessel 10; The outlet of pressure vessel 10 links to each other with the inlet of cooling device 12, and the outlet of cooling device 12 is connected on the inlet of liquid storage tank 13, and the outlet of liquid storage tank 13 links to each other with dewaterer 15 through lysate delivery pump 14; Described heater 8 also is connected with heating agent heater 11.
Be connected with microwave heating appts 17 between described first compression pump 5 and the heater 8, microwave heating appts 17 can use the chemical conditioning treating apparatus to replace.
Between said cooling device 12 and the liquid storage tank 13 pressure-reducing valve is installed.
Be connected with the 3rd compression pump 9 between said heater 8 and the pressure vessel 10.
Described heater 8 is a shell-and-tube heat exchanger with cooling device 12, or is double pipe heat exchanger, or is lamella heat exchanger, or is the square runner heat exchanger of single channel.
The higher biomass solid of moisture content that described biomass solid is made up of solid, the contained or adsorbed liquid of solid.
Described breaker 3 can be cutting machine, grinder etc.; Described filter 4 is the filter that biomass solid is separated with foreign material such as stone, scums; Described chemical conditioning treating apparatus is for realizing improving the mobile device of biomass solid with adding alkaline matter; No matter be to adopt heating or microwave treatment or chemical conditioning to handle, all be in order to reduce the frictional resistance of biomass solid in course of conveying, to reach the purpose that improves liquidity.
Feed bin 1 is used for receiving biomass solid, in the feed bin 1 carriage apparatus is arranged, and prevents the biomass solid bridge formation, and is outdoor if feed bin 1 is built in, at cold district the insulation measure need be set.Discharge gate is arranged at the bottom of feed bin 1, can adjust the output quantity of biomass solid through the aperture of discharge gate.Biomass solid by feed bin 1 output gets into follow-up system through conveyer 2, and conveyer 2 can adopt conveying worm, belt feeder etc., and conveyer 2 can pass through VFC speed, controls the supply of biomass solid with this.If it is outdoor that conveyer 2 is positioned at, also the insulation measure need be set at cold district.
Behind biomass solid process breaker 3 and the filter 4; Get into follow-up system through first compression pump 5; Device 3 chopping that is broken such as the fibre object in the biomass solid, hair, foreign material such as the stone in the biomass solid, scum are filtered device 4 and hold back, and protect follow-up system equipment with this.
Biomass solid through after fragmentation, the filtration is delivered to heater 8 by first compression pump 5, and biomass solid is heated to 210-300 ℃ in heater 8, and heat is provided by heating agent heater 11.For the heat-exchange medium of biomass solid heating is a conduction oil, for the heating agent heater 11 of heat-conducting oil heating be the coal burning heat-conducting oil stove, or is electric heat-conducting oil furnace and natural gas heat-conducting oil furnace.
The biomass solid that is come out by heater 8 gets in the pressure vessel 10; Pressure limit in the pressure vessel 10 is 3-9Mpa; The temperature of biomass solid is 210-300 ℃; The time of staying is 10-30 minute, if first compression pump 5 can not satisfy the pressure requirement in the pressure vessel 10, then need before pressure vessel 10, increase by the 3rd compression pump 9.At this moment, the biological cell in the biomass solid is fully cracking, and moisture is separated out with the form of Free water, and biomass solid has become liquid state, is referred to as the biomass solid lysate.The container 10 interior method of temperature that keep-up pressure have two kinds; The one, utilize external heat source in pressure vessel 10, to continue, the heat that is absorbed during the biological cell cracking in heat that is lost when in pressure vessel 10, stopping and the biomass solid with the compensation biomass solid to biomass solid heating; The 2nd, the temperature of biomass solid when improving entering pressure vessel 10 makes biomass solid behind loses heat or absorption heat, and the temperature of biomass solid still is higher than the temperature that makes the abundant cracking of cell in the biomass solid.
After the biomass solid lysate is come out by pressure vessel 10, get into cooling device 12 and cool off, the temperature of the biomass solid lysate that is come out by cooling device 12 drops to below 100 ℃.
Cooled biomass solid lysate entering liquid storage tank 13 under the effect of pump is equipped with agitating device or aerator in the liquid storage tank 13, the biomass solid lysate is not precipitated.
Biomass solid lysate in the liquid storage tank 13 is squeezed into dewaterer 15 by lysate delivery pump 14, and simultaneously chemicals dosing plant 16 adds the dehydration flocculant to dewaterer 15, and the moisture in the biomass solid lysate is deviate from, and obtains moisture content and be lower than 50% dehydration product.Wherein, dewaterer 15 and chemicals dosing plant 16 are prior art.
If the biomass solid flowability after fragmentation, filtration is bad; Before getting into heater 8, need improve its flowability so; The device that improves liquidity promptly is installed, is improved liquidity and can use the method for heating, also can be with the method for microwave treatment or chemical conditioning processing.When adopting the method for heating; The mode that adds Intermediate Heat Exchanger 18 with energy recycle device or energy recycle device; A part of heat recovery of the biomass solid lysate that will from pressure vessel 10, come out is used for the biomass solid after the heating and filtering, improves its flowability.Improving the mobile device of biomass solid is installed between first compression pump 5 and the heater 8; Pressure is not enough if biomass solid comes out the back from the device that improves liquidity, and one second compression pump 7 then is installed between device that improves liquidity and heater 8 again.
Claims (10)
1. dewatering process that is used for biomass solid is characterized in that: carry out according to following step:
The first step, broken pending biomass solid, the diameter that makes biomass solid is less than 3mm;
In second step, the biomass solid after the filtration fragmentation filters out foreign material such as stone;
The 3rd step; Biomass solid through compression pump obtains filtration is sent into heater (8); And be heated to more than 210 ℃; Get into the middle stop of the pressure vessel that pressure is 3-9Mpa (10) 10-30 minute then, obtain the biomass solid lysate, the temperature in the said pressure vessel (10) remains on 210-300 ℃;
In the 4th step, the biomass solid lysate that from pressure vessel (10), comes out gets in the cooling device (12) and is cooled to below 100 ℃;
In the 5th step, cooled biomass solid lysate is sent into dehydration in the dewaterer (15).
2. a kind of dewatering process that is used for biomass solid according to claim 1; It is characterized in that: increase between said second step and the 3rd step biomass solid is heated; Or microwave treatment, or the step of chemical conditioning is improved the flowability of biomass solid.
3. a kind of dewatering process that is used for biomass solid according to claim 2; It is characterized in that: the biomass solid lysate that from pressure vessel (10), comes out carries out getting into cooling device (12) again after the heat recovery through heat exchange earlier and cools off in said the 4th step; The heat that reclaims is used for the biomass solid heating after filtering is improved the flowability of biomass solid.
4. used dehydration equipment of dewatering process that is used for biomass solid as claimed in claim 1; Comprise breaker (3), filter (4), heater (8), pressure vessel (10), cooling device (12), liquid storage tank (13) and dewaterer (15); It is characterized in that: the inlet of breaker (3) links to each other through conveyer (2) with the outlet of the feed bin (1) of splendid attire biomass solid; The outlet of breaker (3) links to each other with the inlet of filter (4); The outlet of filter (4) links to each other with the inlet of heater (8) through first compression pump (5); The outlet of heater (8) links to each other with the inlet of pressure vessel (10); The outlet of pressure vessel (10) links to each other with the inlet of cooling device (12), and the outlet of cooling device (12) is connected on the inlet of liquid storage tank (13), and the outlet of liquid storage tank (13) links to each other with dewaterer (15) through lysate delivery pump (14); Described heater (8) also is connected with heating agent heater (11).
5. a kind of dehydration equipment that is used for biomass solid according to claim 4; It is characterized in that: be connected with heat reclaim unit (6) between said first compression pump (5) and the heater (8); The outlet of said pressure vessel (10) links to each other with the inlet of cooling device (12) through heat reclaim unit (6); The biomass solid lysate that from pressure vessel (10), comes out heats through the biomass solid that filters firm in described heat reclaim unit (6), improves the flowability of biomass solid.
6. a kind of dehydration equipment that is used for biomass solid according to claim 4; It is characterized in that: be connected with heat reclaim unit (6) between said first compression pump (5) and the heater (8); Be connected with Intermediate Heat Exchanger (18) between said pressure vessel (10) and the cooling device (12), Intermediate Heat Exchanger (18) links to each other with heat reclaim unit (6).
7. a kind of dehydration equipment that is used for biomass solid according to claim 4 is characterized in that: be connected with microwave heating appts (17) or chemical conditioning treating apparatus between described first compression pump (5) and the heater (8).
8. a kind of dehydration equipment that is used for biomass solid according to claim 4 is characterized in that: between said cooling device (12) and the liquid storage tank (13) pressure-reducing valve is installed.
9. a kind of dehydration equipment that is used for biomass solid according to claim 4 is characterized in that: be connected with the 3rd compression pump (9) between said heater (8) and the pressure vessel (10).
10. a kind of dehydration equipment that is used for biomass solid according to claim 6; It is characterized in that: described heat reclaim unit (6), heater (8), cooling device (12) and Intermediate Heat Exchanger (18) are shell-and-tube heat exchanger; Or be double pipe heat exchanger; Or be lamella heat exchanger, or be the square runner heat exchanger of single channel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101125842A CN102636006A (en) | 2012-04-17 | 2012-04-17 | Dehydration process and equipment for biomass solid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101125842A CN102636006A (en) | 2012-04-17 | 2012-04-17 | Dehydration process and equipment for biomass solid |
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| CN102636006A true CN102636006A (en) | 2012-08-15 |
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| CN2012101125842A Pending CN102636006A (en) | 2012-04-17 | 2012-04-17 | Dehydration process and equipment for biomass solid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108531233A (en) * | 2018-03-30 | 2018-09-14 | 上海锦泥环境技术有限公司 | A kind of method that biomass fuel makes |
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2012
- 2012-04-17 CN CN2012101125842A patent/CN102636006A/en active Pending
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| US4321151A (en) * | 1979-12-07 | 1982-03-23 | Mcmullen Frederick G | Process for wastewater treatment and wastewater sludge conversion into energy |
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| CN101671106A (en) * | 2009-09-28 | 2010-03-17 | 广州普得环保设备有限公司 | Method and device for sludge filter cake aerobic air drying |
| CN101698561A (en) * | 2009-10-23 | 2010-04-28 | 宁波工程学院 | Silt pretreatment method for enhancing dehydration property and digestibility of silt |
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| CN108531233A (en) * | 2018-03-30 | 2018-09-14 | 上海锦泥环境技术有限公司 | A kind of method that biomass fuel makes |
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Application publication date: 20120815 |