CN101584966A - Device provided with chemical reactor therein for jointly removing inhalable particle of coal and heavy metal Hg and method - Google Patents
Device provided with chemical reactor therein for jointly removing inhalable particle of coal and heavy metal Hg and method Download PDFInfo
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- CN101584966A CN101584966A CNA2009100538174A CN200910053817A CN101584966A CN 101584966 A CN101584966 A CN 101584966A CN A2009100538174 A CNA2009100538174 A CN A2009100538174A CN 200910053817 A CN200910053817 A CN 200910053817A CN 101584966 A CN101584966 A CN 101584966A
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Abstract
The invention relates to a device provided with chemical reactor therein for jointly removing inhalable particle of coal and heavy metal Hg and method. The device comprises a connecting pipe on which a material spraying device is arranged and which is connected with the chemical reactor that is arranged in a bag-type dust collector. The invention uses fly ash, unburned carbon, lime powder and iron ash to absorb sulfoxides and sulfoxides in the burnt coal gas; filter material in the bag-type dust collector is made from carbon-blended fibres and can jointly remove inhalable particle of coal and heavy metal Hg when filtering gas. The invention has removing effect of 98% to inhalable particle of PM 2.5 grade, obviously controls discharge of heavy metal Hg in coal gas, and has advantages of small volume, simple operation, safe and reliable running and obvious environment effect etc.
Description
Technical field
The invention belongs to coal-fired flue-gas and purify and the dedusting technology field, particularly relate to the device and method that uniting of a kind of built-in chemical reactor removes inhalable particles in coal and heavy metal Hg.
Background technology
The atmosphere pellet has become the outstanding problem of air environmental pollution, and causes the great attention of countries in the world day by day.Coal be China at present and after the main body of power station fuel in quite long one period, coal dust firing can bring serious pellet pollution when essential thermal source and electric power resource is provided.According to statistics: the total amount of the pellet of China's coal fired power plant discharging in 2005 accounts for 1.2～1.5% of coal for power generation amount, is about 6.34～7.92 ten thousand tons.Coal fire discharged pellet has become the main source of atmosphere pellet.Pellet is because it has bigger specific area, enrichment a large amount of toxic heavy metal and organic matters, and can be in air stop for a long time, can cause various environmental problems and physiological problem.
The pollutant that generates in the coal combustion process removes SO
2, NOx, CO
2Beyond pellet, also has the heavy metal Hg of various forms.Mercury and compound thereof can pass through different approaches such as respiratory tract, skin and alimentary canal and invade human body, cause nerve to poison and the deep tissue pathology, and mercury toxicity has accumulation, often just there are performance need several years or more than ten years, so the mercury pollution control problem in the coal-fired process more and more comes into one's own.In coal in China is the main fuel energy, and China's coal fired power plant mercury emission in 2003 reaches 8618t according to statistics, and the waste residue mercury emission is 28194t.Can predict, prevent that coal-fired mercury pollution from being one of most important environmental protection problem of 21 century power industry.
In view of the serious harm of inhalable particles in coal and heavy metal and the diseconomy of single pollutant control appliance, find a kind of integrated control technology that removes inhalable particles in coal and heavy metal Hg of uniting extremely urgent.
At present, be used for coal-fired flue gases purification, as flue gas ash removal, flue gas desulfurization, denitrating flue gas with to remove heavy metal etc. mostly be to carry on technical development separately, form separately technical system and technological process, in present domestic and international coal-burning power plant, in order to remove pellet and heavy metal Hg etc. in the coal-fired flue-gas, most independently dust pelletizing systems that adopt more than at least two covers, there are shortcomings such as occupation area of equipment is big, cost of investment is high, complicated operation in this flue gas purification system.Aspect heavy metal removing, what present most of dedusters adopted is that active carbon sprays into technology, though this obvious technical effects, the operating cost (mainly being the cost of active carbon) that process is relevant is higher therewith, becomes the obstacle that this technology is further applied.
Summary of the invention
At problems of the prior art, the objective of the invention is to provide the device and method that removes inhalable particles in coal and heavy metal Hg of uniting of a kind of occupation area of equipment is little, cost of investment is low, simple to operate built-in chemical reactor.
To achieve these goals, technical scheme of the present invention provides the device that uniting of a kind of built-in chemical reactor removes inhalable particles in coal and heavy metal Hg, it is characterized in that, comprise tube connector, tube connector is provided with the material jetting device, tube connector connects chemical reactor, and chemical reactor places sack cleaner inside;
Wherein, described sack cleaner comprises ash bucket, the ash bucket upside connects the sack cleaner casing, sack cleaner casing middle part is provided with card, card connects filter bag, sack cleaner casing top one side is provided with pulse jetting deashing device, opposite side is provided with purified gas outlet, and the outlet of described chemical reactor places between filter bag and the ash bucket.
Described filter bag is made by the industrial cloth of making through the carbon dope fiber.
The present invention also provides and has used said apparatus to unite the method that removes inhalable particles in coal and heavy metal Hg, it is characterized in that concrete steps are:
The first step: coal-fired flue-gas is entered the material jetting device through tube connector, and enter chemical reactor after the flying dust carbon residue that is sprayed into by the material jetting device, lime powder and iron ash mix;
Second step: reacted coal-fired flue-gas enters sack cleaner through the outlet at bottom of chemical reactor coal-fired flue-gas is filtered in chemical reactor, and the material that filters out is collected by ash bucket, and flue gas after being purified is discharged by purified gas outlet.
Adopt oxysulfide, heavy metal Hg in flying dust carbon residue, lime powder and the iron ash absorption coal-fired flue-gas in the inventive method; Filtrate in the sack cleaner is made through the carbon dope fiber, and the carbon dope fiber filtering has abundant microporous, bigger specific area and activity, when carrying out smoke filtration, can realize that uniting of pellet and heavy metal Hg removes; Contain the flying dust carbon residue in the material of collecting in the sack cleaner ash bucket, iron ash etc. are separated it, carry out recyclingly, have improved effective utilization ratio of material, to save the operating cost of system.
Beneficial effect of the present invention is as follows:
(1) in apparatus of the present invention, chemical reactor is built in the sack cleaner, has effectively reduced the floor space of system;
(2) the cheap flying dust carbon residue of employing adsorbs the heavy metal Hg in the flue gas, has realized the treatment of wastes with processes of wastes against one another, and has reduced the operating cost of system effectively;
(3) material of collecting in the sack cleaner ash bucket contains flying dust carbon residue, iron ash etc., it can be separated to carry out recyclingly, has improved effective utilization ratio of material;
(4) this technological operation is simple, safe and reliable to operation, is easy to existing apparatus is transformed obvious environment benefit.
Description of drawings
Fig. 1 unites the installation drawing that removes inhalable particles in coal and heavy metal Hg.
The specific embodiment
Specify the present invention below in conjunction with embodiment.
As shown in Figure 1, for uniting the installation drawing that removes inhalable particles in coal and heavy metal Hg, described device is made up of tube connector 1, material jetting device 2, chemical reactor 3 and sack cleaner.Tube connector 1 is provided with material jetting device 2, and tube connector 1 connects chemical reactor 3, and chemical reactor 3 places sack cleaner inside; Wherein, described sack cleaner is made up of pulse jetting deashing device 4, sack cleaner casing 5, purified gas outlet 6, ash bucket 7, filter bag 8 and card 9.Ash bucket 7 upsides connect sack cleaner casing 5, sack cleaner casing 5 middle parts are provided with card 9, card 9 connects filter bag 8, sack cleaner casing 5 tops one side is provided with pulse jetting deashing device 4, opposite side is provided with purified gas outlet 6, and the outlet of described chemical reactor 3 places between filter bag 8 and the ash bucket 7.Described filter bag 8 is made by the industrial cloth of making through the carbon dope fiber (as: glass fibre+carbon fiber), have abundant microporous (its aperture is 5～14 dusts), bigger specific area and activity, when being filtered, flue gas captures inhalable particles in coal effectively, remove heavy metal Hg once more, realize inhalable particles in coal and remove uniting of heavy metal Hg.
Said apparatus is united and is removed that the method for pellet and heavy metal Hg is in the coal-fired flue-gas:
Coal-fired flue-gas enters material jetting device 2 through tube connector 1, with enter chemical reactor 3 after the flying dust carbon residue that is sprayed into by material jetting device 2, lime powder and iron ash mix, under 100～180 ℃, the condition of 0.1～0.2MPa, react 0.1～0.5h, remove oxysulfide, heavy metal Hg (Hg in the flue gas
0Steam); Reacted coal-fired flue-gas is entered 5 pairs of coal-fired flue-gas of sack cleaner through the outlet of chemical reactor 1 to be filtered, the material that filters out is collected by ash bucket 7, contain flying dust carbon residue, iron ash etc. in the material of collecting, it can be separated, reuse, improve effective utilization ratio of material, to save the operating cost of system.Flue gas after being purified is discharged by purified gas outlet 6.
In the associating subtractive process of the present invention, can control the straying quatity of flying dust carbon residue, lime powder and iron ash respectively according to the situation that the inlet coal-fired flue-gas detects.
Facts have proved that utilization the inventive method removes pellet, PM2.5 level pellet especially, its removal efficiency reaches more than 98%, and has significantly controlled the mercury emissions of coal-fired flue-gas, and operating cost greatly reduces, obvious environment benefit.
Claims (3)
1. a built-in chemical reactor unites the device that removes inhalable particles in coal and heavy metal Hg, it is characterized in that, comprise tube connector (1), tube connector (1) is provided with material jetting device (2), tube connector (1) connects chemical reactor (3), and chemical reactor (3) places sack cleaner inside;
Wherein, described sack cleaner comprises ash bucket (7), ash bucket (7) upside connects sack cleaner casing (5), sack cleaner casing (5) middle part is provided with card (9), card (9) connects filter bag (8), sack cleaner casing (5) top one side is provided with pulse jetting deashing device (4), opposite side is provided with purified gas outlet (6), and the outlet of described chemical reactor (3) places between filter bag (8) and the ash bucket (7).
A kind of built-in chemical reactor as claimed in claim 1 unite the device that removes inhalable particles in coal and heavy metal Hg, it is characterized in that described filter bag (8) is made by the industrial cloth of making through the carbon dope fiber.
3. use the described device of claim 1 to unite the method that removes inhalable particles in coal and heavy metal Hg, it is characterized in that concrete steps are:
The first step: coal-fired flue-gas is entered material jetting device (2) through tube connector (1), and enter chemical reactor (3) after the flying dust carbon residue that is sprayed into by material jetting device (2), lime powder and iron ash mix;
Second step: will be in chemical reactor (3) reacted coal-fired flue-gas enter sack cleaner (5) through the outlet of chemical reactor (1) coal-fired flue-gas filtered, the material that filters out is collected by ash bucket (7), and flue gas after being purified is discharged by purified gas outlet (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100538174A CN101584966A (en) | 2009-06-25 | 2009-06-25 | Device provided with chemical reactor therein for jointly removing inhalable particle of coal and heavy metal Hg and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100538174A CN101584966A (en) | 2009-06-25 | 2009-06-25 | Device provided with chemical reactor therein for jointly removing inhalable particle of coal and heavy metal Hg and method |
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| Publication Number | Publication Date |
|---|---|
| CN101584966A true CN101584966A (en) | 2009-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100538174A Pending CN101584966A (en) | 2009-06-25 | 2009-06-25 | Device provided with chemical reactor therein for jointly removing inhalable particle of coal and heavy metal Hg and method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102091484A (en) * | 2010-12-07 | 2011-06-15 | 哈尔滨工业大学（威海） | Integrated device for removal of dusts and gaseous pollutants |
| CN102589613A (en) * | 2012-01-20 | 2012-07-18 | 东华大学 | Remote monitoring system for combined removal of fuel coal inhalable particles and heavy metal |
| CN116920536A (en) * | 2023-05-11 | 2023-10-24 | 国电环境保护研究院有限公司 | Coal-fired flue gas and desulfurization waste water treatment device |
-
2009
- 2009-06-25 CN CNA2009100538174A patent/CN101584966A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102091484A (en) * | 2010-12-07 | 2011-06-15 | 哈尔滨工业大学（威海） | Integrated device for removal of dusts and gaseous pollutants |
| CN102091484B (en) * | 2010-12-07 | 2012-07-04 | 哈尔滨工业大学（威海） | Integrated device for removal of dusts and gaseous pollutants |
| CN102589613A (en) * | 2012-01-20 | 2012-07-18 | 东华大学 | Remote monitoring system for combined removal of fuel coal inhalable particles and heavy metal |
| CN102589613B (en) * | 2012-01-20 | 2014-10-15 | 东华大学 | Remote monitoring system for combined removal of fuel coal inhalable particles and heavy metal |
| CN116920536A (en) * | 2023-05-11 | 2023-10-24 | 国电环境保护研究院有限公司 | Coal-fired flue gas and desulfurization waste water treatment device |
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Open date: 20091125 |