CN102872712A - Semi-dry-process desulfurization apparatus - Google Patents
Semi-dry-process desulfurization apparatus Download PDFInfo
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- CN102872712A CN102872712A CN2012103936372A CN201210393637A CN102872712A CN 102872712 A CN102872712 A CN 102872712A CN 2012103936372 A CN2012103936372 A CN 2012103936372A CN 201210393637 A CN201210393637 A CN 201210393637A CN 102872712 A CN102872712 A CN 102872712A
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Abstract
The invention belongs to the field of environmental engineering and relates to a semi-dry-process desulfurization apparatus. The apparatus comprises an inlet of an absorption tower, a guide plate, a dense phase chamber, a circulating fluidization chamber, a partition plate, an ash bucket and an outlet of the absorption tower, wherein the absorption tower is of a U-shaped design; the inlet of the absorption tower is arranged at the upper part of the left outer side of the whole apparatus; dust-containing flue gas enters the dense phase chamber from the inlet of the absorption tower via the guide plate; the flue gas and a desulfurizer are subjected to contact reaction in the dense phase chamber; large-grained circulating ash after reaction directly falls into the ash bucket at the bottom of the absorption tower, and fine-grained circulating ash enters the circulating fluidization chamber to be subjected to further reaction along with the flue gas; the desulfurized flue gas and part of the fine grains enter a subsequent dust remover from an outlet of a desulfurization tower; and the circulating ash at the bottom of the absorption tower and in the ash bucket of the dust remover is lifted to the inlet of the absorption tower in a medium-pressure delivery manner, thus finishing the whole cycle. According to the invention, the desulfurization reaction time is increased, the desulfurization efficiency is improved, the amount of the circulating ash is reduced, the load of the dust remover is lowered, the service life of the dust remover is prolonged, the energy is greatly saved, and the maintenance and repair frequency of the apparatus is reduced.
Description
Technical field
The invention belongs to field of environment engineering, relate to a kind of semi-dry desulphurization absorption tower.
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Background technology
The Target of Total Pollutant Amount Control of sulfur dioxide has been worked out in Chinese Ministry of Environmental Protection " 12 " planning.By 2015, the total emission volumn of sulfur dioxide will reduce 10% than 2010.The power industry SO2 emissions account for 46.4% of national total emission volumn, implement this standard after, by 2015, the power industry sulfur dioxide (SO2) emissions can reduce 6,180,000 tons.The sulfur dioxide (SO2) emissions of steel industry are only second to power industry, SO
2Discharge capacity accounts for 11% of national total release, and " the steel industry sintering flue gas desulfurization embodiment " of Ministry of Industry and Information 2009 issue point out, to 2011 the end of the year China's steel industry sintering gas flue gas sulfuric dioxide discharge capacity be reduced to 51.8 ten thousand tons by 800,000 tons.
At present, common semi-dry desulfurizing process all requires in certain circulating ash concentration and carries out desulphurization reaction under the time of staying both at home and abroad, just can reach the desulfurized effect of desulfurization design, therefore more fixing at the tower design aspect, it is stable that the circulating ash quantity of system also tends to.Although adopt traditional tower pattern can reach higher desulfuration efficiency, also increased unnecessary running energy consumption.
Problem for above-mentioned semi-dry desulfurizing process appearance, the present invention proposes a kind of improved tower design, original semi-dry desulphurization tower has been carried out structure of modification, so that the desulfurizing tower height reduces, systemic circulation ash amount is carried out initial gross separation in tower, reduced the circulating ash quantity that enters sack cleaner, to greatest extent reduction system running energy consumption.
Semi-dry process flue gas desulphurization equipment is that collection wet desulphurization efficient is high, and the advantages such as dry method equipment is simple, small investment are in a kind of sulfur method of one, is subject to the consistent approval of domestic and international desulfurization enterprise.Present existing semi-dry process flue gas desulphurization equipment has, such as Chinese patent: ZL200420009188.8 " a kind of flue gas desulfur device with agitator ", ZL200520023243.3 " a kind of semi-dry flue gas desulfurization device with agitator ", ZL200610089328.0 " a kind of dense-phase tower device of selective desulfurization ", ZL200610114609.7 " a kind of circular dense phase fluidizing desulfurization apparatus ", ZL200720103180.1 " a kind of circular dense phase fluidizing desulfurization apparatus ", ZL200620022793.8 " a kind of cylinder shaped dense-phase tower desulfurizing and dust removing unit ", ZL200620119386.9 " a kind of composite stirring flue gas desulfur device ", ZL201020232657.8 " a kind of horizontal dense-phase circulating fluidizing dry-tower desulfurization device ",: ZL201020135487.1 " a kind of dense-phase circulating fluidized flow absorber desulfurization device ", ZL201110149776.6 " a kind of semi-dry process flue gas desulphurization dust removal integrated plant ".
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Summary of the invention
The objective of the invention is in order to solve existing semi-dry desulphurization equipment energy consumption highlyer, the problem such as the deduster load is large adopts present device, has reduced the absorption tower height; Internal condition fluid Simulation result adds deflector and dividing plate on the absorption tower; Change original flue gas flow path in the absorption tower, increased the time of staying, improved desulfuration efficiency.
A kind of semi-dry desulphurization equipment is characterized in that: described equipment comprises absorption tower entrance 1, deflector 2, close phase chamber 3, ciculation fluidized chamber 4, dividing plate 5, ash bucket 6, absorption tower outlet 7; Described absorption tower entrance 1 is arranged on the left-external side top of close phase chamber 3; Described deflector 2 is positioned at 3/4 place of absorption tower entrance 1; Described close phase chamber 3 is positioned at the left side, absorption tower; Described ciculation fluidized chamber 4 is positioned at the right side, absorption tower; Described dividing plate 5 is positioned at close phase chamber 3 and 4 middle parts, ciculation fluidized chamber, for increasing flow of flue gas through the total length in path, thereby improve desulfuration efficiency, and reduce the deduster load; Described ash bucket 6 is positioned at the absorption tower bottom; Described absorption tower outlet 7 is positioned at the right outside side in ciculation fluidized chamber, and is corresponding with absorption tower entrance 1.
Further, described absorption tower entrance is arranged on close phase chamber left-external side topmost, is 60 degree angles with close phase chamber outer wall horizontal plane obliquely.Machine simulation and repetition test are found place, 60 degree angles as calculated, and flue gas can be more up hill and dale in close phase chamber and ciculation fluidized chamber and desulphurizer mixing, and desulfuration efficiency is higher.
Further, described deflector is arranged in the entrance of absorption tower, perpendicular to the absorption tower entrance.When machine simulation and repetition test were found deflector perpendicular to the absorption tower entrance as calculated, flue gas was the most even at close phase indoor distribution, and desulfuration efficiency is higher.
Further, described close phase chamber height is 1-15m, wide 0.5-15m, long 0.5-15m.The present invention has special design in the size of each part, to guarantee desulfuration efficiency.The size of close phase chamber can guarantee desulfuration efficiency in above-mentioned scope, can effectively reduce again floor space and the operating cost of equipment.
Further, described ciculation fluidized chamber height is 1-15m, wide 0.5-15m, long 0.5-15m.The present invention has special design in the size of each part, to guarantee desulfuration efficiency.The size of ciculation fluidized chamber can guarantee desulfuration efficiency in above-mentioned scope, can effectively reduce again floor space and the operating cost of equipment.
Further, the dividing plate height is 0.5-7.5m, and wide is 0.5-15m, and long is 0.5-15m.Dividing plate is evenly divided into two parts with close phase chamber and ciculation fluidized chamber, and the setting of dividing plate has not only increased by one times with the time of contact of flue gas and desulfurizing agent, has also effectively reduced the load of follow-up deduster.
Further, ash bucket is flat shape, and machine simulation and repetition test are found as calculated, and flat shape ash bucket more is conducive to the conveying of absorption tower bottom cycle ash.
Further, the outlet of described absorption tower is arranged on the right outside side in ciculation fluidized chamber topmost, obliquely horizontal by 60 degree angles.Machine simulation and repetition test are found place, 60 degree angle as calculated, 60% of the larger particles desulfurizing agent that flue gas is entrained can continue to stay participates in reaction in the ciculation fluidized chamber, all the other fine particles and part bulky grain enter in the follow-up deduster with flue gas, under the prerequisite that guarantees desulfuration efficiency, farthest reduced the deduster load.
The U-shaped design on absorption tower has increased the reaction time of flue gas and desulfurizing agent among the present invention, has reduced circulating ash quantity, has reduced the deduster load, prolonged the physical life of deduster, reduce energy consumption, reduced frequency of maintenance, and effectively reduced floor space and the operating cost of equipment.
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Description of drawings
Figure 1 shows that structural representation of the present invention.
Among the figure:
1, absorption tower entrance, 2, deflector, 3, close phase chamber, 4, ciculation fluidized chamber, 5, dividing plate, 6, ash bucket, 7, the absorption tower outlet.
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The specific embodiment
The present invention adopts dividing plate that the absorption tower is divided into two parts, under the constant prerequisite of absorption tower floor space, greatly increased the time of contact of flue gas and desulfurizing agent, improved desulfuration efficiency, reduced the deduster crushing, reduce follow-up main exhauster power consumption, saved greatly power consumption and maintenance and repair expense.The present invention is provided with deflector in the entrance of absorption tower, flue gas flow field is distributed more even, and flue gas is more abundant with mixing of desulfurizing agent, and desulfuration efficiency obviously improves.The concentration of circulating ash is larger in the close phase of the present invention chamber, desulphurization reaction about 75% is arranged close mutually indoor finishing, because circulating ash concentration is large and flue-gas temperature is relatively high in the close phase chamber, therefore can suitably increase the water content of circulating ash in close phase chamber, to reach better desulfurized effect.Along with flue gas and circulating ash flow to the bottom, absorption tower, its flow path changes, flue gas and circulating ash change into from bottom to top and flowing, coarse granule circulating ash in close phase chamber relies on Action of Gravity Field to fall into the ash bucket of bottom, absorption tower, press in the utilization to carry the coarse granule circulating ash in the close phase chamber is risen to the porch, absorption tower, continue reaction.In ciculation fluidized chamber than the circulating ash of light grains along with flue gas moves up, circulating ash is fully mixed with flue gas in the ciculation fluidized chamber, clash into, about 25% desulphurization reaction is finished in ciculation fluidized chamber, and the flue gas after the desulfurization continues up to enter follow-up sack cleaner by the absorption tower outlet.Therefore because close mutually indoorly have part directly to fall into ash bucket than coarse granule, and the circulating path of circulating ash is shortened, and reduced the running energy consumption of system; Moreover through the initial gross separation of the circulating ash in the absorption tower, circulating ash concentration reduces in the flue gas on absorption tower, so that the circulating ash quantity that enters in the sack cleaner reduces, has so just reduced the production load of sack cleaner, the use service life of having improved cloth bag.This equipment has increased the time of contact of flue gas and desulfurizing agent, has reduced the deduster load, has prolonged the physical life of deduster, has reduced energy consumption, has reduced frequency of maintenance, and effectively reduces floor space and the operating cost of equipment.
Below in conjunction with accompanying drawing, specifically set forth specific implementation process of the present invention.
Among the present invention, absorption tower entrance 1 is arranged on 3 left-external sides upper end, close phase chamber, be 60 degree angles with close phase chamber outer wall horizontal plane obliquely, sulfur-containing smoke gas enters close phase chamber 3 at absorption tower entrance 1 place through deflector 2, flue gas fully mixes in close phase chamber 3 with the circulating ash through humidification, and following current flows downward, coarse granule directly falls into the ash bucket of bottom, absorption tower, fine grained is ciculation fluidized chamber 4 along with flue gas enters, close phase chamber 3 and the ciculation fluidized chamber 4 middle dividing plates 5 that are provided with, dividing plate 5 has increased the time of contact of circulating ash and flue gas, has improved system's desulfuration efficiency.Flue gas and circulating ash upwards flow in ciculation fluidized chamber, fall into bottom ash bucket 6 than coarse granule, enter in the follow-up deduster along with flue gas exports 7 by the absorption tower than fine grained.Circulating ash in the deduster and the circulating ash that directly falls into ash bucket 6 are carried by pressure and are got back to absorption tower entrance 1 place, along with flue gas enters in the close phase chamber 3, finish whole circulation.
Close phase of the present invention chamber 3 design heights are 1-15m, and wide is 0.5-15m, and long is 0.5-15m; Ciculation fluidized chamber 4, design height are 1-15m, and wide is 0.5-15m, and long is 0.5-15m; Dividing plate 5 design heights are 0.5-7.5m, and wide is 0.5-15m, and long is 0.5-15m; Absorption tower outlet 7 is 60 degree angles obliquely with ciculation fluidized chamber outer wall.
Claims (9)
1. semi-dry desulphurization equipment is characterized in that: described equipment comprises absorption tower entrance (1), deflector (2), close phase chamber (3), ciculation fluidized chamber (4), dividing plate (5), ash bucket (6), absorption tower outlet (7);
Described absorption tower entrance (1) is arranged on the left-external side top of close phase chamber (3);
Described deflector (2) is positioned at absorption tower entrance (1) 3/4 place;
Described close phase chamber (3) is positioned at the left side, absorption tower;
Described ciculation fluidized chamber (4) is positioned at the right side, absorption tower;
Described dividing plate (5) is positioned at close phase chamber (3) and ciculation fluidized chamber (4) middle part;
Described ash bucket (6) is positioned at the absorption tower bottommost;
Described absorption tower outlet (7) is positioned at the right outside side in ciculation fluidized chamber, and is corresponding with absorption tower entrance (1).
2. a kind of semi-dry desulphurization equipment according to claim 1, it is characterized in that: the absorption tower is U-shaped design, it is close phase chamber and ciculation fluidized chamber that reaction zone is divided into two chambers.
3. a kind of semi-dry desulphurization equipment according to claim 1 is characterized in that: absorption tower entrance (1) is arranged on close phase chamber (3) left-external side apart from topmost.
4. a kind of semi-dry desulphurization equipment according to claim 1, it is characterized in that: deflector (2) is arranged in the absorption tower entrance (1), perpendicular to the absorption tower entrance.
5. a kind of semi-dry desulphurization equipment according to claim 1 is characterized in that: close phase chamber (3) highly is 1-15m, and wide be 0.5-15m, and long is 0.5-15m.
6. a kind of semi-dry desulphurization equipment according to claim 1 is characterized in that: ciculation fluidized chamber (4) highly are 1-15m, and wide be 0.5-15m, and long is 0.5-15m.
7. a kind of semi-dry desulphurization equipment according to claim 1 is characterized in that: dividing plate (5) is arranged in the middle of close phase chamber (3) and ciculation fluidized chamber (4), highly be 0.5-7.5m, and wide is 0.5-15m, and growing is 0.5-15m.
8. a kind of semi-dry desulphurization equipment according to claim 1, it is characterized in that: ash bucket (6) is arranged on the absorption tower bottom, and ash bucket (6) is flat shape.
9. absorption tower outlet (7) is arranged on right outside side the top of ciculation fluidized chamber (4).
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| CN201210393637.2A CN102872712B (en) | 2012-10-16 | 2012-10-16 | Semi-dry-process desulfurization apparatus |
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| CN201210393637.2A CN102872712B (en) | 2012-10-16 | 2012-10-16 | Semi-dry-process desulfurization apparatus |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437007A (en) * | 2014-11-03 | 2015-03-25 | 中国科学院城市环境研究所 | Formaldehyde scavenging air purifier |
| CN106268099A (en) * | 2015-06-02 | 2017-01-04 | 张文辉 | A kind of purification method of flue gas |
| CN107174921A (en) * | 2017-07-26 | 2017-09-19 | 江苏苏高流体机械有限公司 | One kind is used for desulfuration in furnace device |
| CN107321166A (en) * | 2017-07-26 | 2017-11-07 | 北京北科环境工程有限公司 | A kind of semidry process desulfurizer |
| CN107983139A (en) * | 2017-10-12 | 2018-05-04 | 北京北科环境工程有限公司 | A kind of system for coke-oven plant's flue gas desulfurization |
| CN109999629A (en) * | 2019-04-17 | 2019-07-12 | 中国恩菲工程技术有限公司 | Multistage dense phase semi-dry desulphurization reactor |
| WO2020211829A1 (en) * | 2019-04-17 | 2020-10-22 | 中国恩菲工程技术有限公司 | Multi-stage dense phase semi-dry desulphurisation reactor |
| CN111888910A (en) * | 2020-07-23 | 2020-11-06 | 唐山钢铁集团有限责任公司 | Sintering flue gas dense-phase semi-dry desulfurization and denitrification device and process |
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| WO1998032523A1 (en) * | 1997-01-24 | 1998-07-30 | Kvaerner Pulping Oy | Flue gas scrubber |
| CN2807042Y (en) * | 2005-04-28 | 2006-08-16 | 张友花 | Multifunctional wet type reactor for purifying smoke |
| CN202844869U (en) * | 2012-10-16 | 2013-04-03 | 北京科技大学 | Desulfurization equipment adopting semi-dry method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1998032523A1 (en) * | 1997-01-24 | 1998-07-30 | Kvaerner Pulping Oy | Flue gas scrubber |
| CN2807042Y (en) * | 2005-04-28 | 2006-08-16 | 张友花 | Multifunctional wet type reactor for purifying smoke |
| CN202844869U (en) * | 2012-10-16 | 2013-04-03 | 北京科技大学 | Desulfurization equipment adopting semi-dry method |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437007A (en) * | 2014-11-03 | 2015-03-25 | 中国科学院城市环境研究所 | Formaldehyde scavenging air purifier |
| CN106268099A (en) * | 2015-06-02 | 2017-01-04 | 张文辉 | A kind of purification method of flue gas |
| CN107174921A (en) * | 2017-07-26 | 2017-09-19 | 江苏苏高流体机械有限公司 | One kind is used for desulfuration in furnace device |
| CN107321166A (en) * | 2017-07-26 | 2017-11-07 | 北京北科环境工程有限公司 | A kind of semidry process desulfurizer |
| CN107321166B (en) * | 2017-07-26 | 2023-08-29 | 北京北科环境工程有限公司 | Semi-dry desulfurization device |
| CN107983139A (en) * | 2017-10-12 | 2018-05-04 | 北京北科环境工程有限公司 | A kind of system for coke-oven plant's flue gas desulfurization |
| CN107983139B (en) * | 2017-10-12 | 2023-12-12 | 北京北科环境工程有限公司 | System for be used for coking plant flue gas desulfurization |
| CN109999629A (en) * | 2019-04-17 | 2019-07-12 | 中国恩菲工程技术有限公司 | Multistage dense phase semi-dry desulphurization reactor |
| WO2020211829A1 (en) * | 2019-04-17 | 2020-10-22 | 中国恩菲工程技术有限公司 | Multi-stage dense phase semi-dry desulphurisation reactor |
| CN109999629B (en) * | 2019-04-17 | 2024-01-05 | 中国恩菲工程技术有限公司 | Multistage dense-phase semi-dry desulfurization reactor |
| CN111888910A (en) * | 2020-07-23 | 2020-11-06 | 唐山钢铁集团有限责任公司 | Sintering flue gas dense-phase semi-dry desulfurization and denitrification device and process |
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| CN102872712B (en) | 2014-05-07 |
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Effective date of registration: 20221107 Address after: Room A-4645, Building 3, No. 20 Yong'an Road, Shilong Economic Development Zone, Mentougou District, Beijing, 102308 Patentee after: BEIJING BEIKE ENVIRONMENTAL ENGINEERING CO.,LTD. Address before: 100083 No. 30, Haidian District, Beijing, Xueyuan Road Patentee before: University OF SCIENCE AND TECHNOLOGY BEIJING |