CN202173878U - Ammonia desulfurization and ash-and-slag removal system for sintering smoke in steel works - Google Patents
Ammonia desulfurization and ash-and-slag removal system for sintering smoke in steel works Download PDFInfo
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- CN202173878U CN202173878U CN2011202909491U CN201120290949U CN202173878U CN 202173878 U CN202173878 U CN 202173878U CN 2011202909491 U CN2011202909491 U CN 2011202909491U CN 201120290949 U CN201120290949 U CN 201120290949U CN 202173878 U CN202173878 U CN 202173878U
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Abstract
The utility model relates to an ammonia desulfurization and ash-and-slag removal system for sintering smoke in steel works, and belongs to mechanical equipment. The ammonia desulfurization and ash-and-slag removal system consists of a waterpower backflushing stirring pump, an annular stirring device, an ash-and-slag solution lift pump, a depositing tank, a sludge pump, a press filter, a middle lift tank and a middle lift pump. The ammonia desulfurization and ash-and-slag removal system changes the situations of difficulty in slagging, easiness in plugging, frequent maintenance, complex operation management, easiness in damage to an inner framework of a filter, and the like in the conventional ammonia desulfurization and ash-and-slag removal system, the damage to the inner framework of the filter results from over high backflushing pressure, and the situations of difficulty in slagging, easiness in plugging, frequent maintenance and complex operation management caused by the adoption of a bag filter or a self-cleaning filter in the conventional ammonia desulfurization and ash-and-slag removal system. The ash-and-slag removal system adopts twice ash-and-slag treatments which are respectively depositing and press filtering, so that the clear liquid is branched twice, the ash and slag removal rate is more than 90%, the operation cost is low, meanwhile, the ash and slag can become cakes so as to be convenient fro transportation, in addition, the ammonia desulfurization system for sintering smoke can be ensured to work normally, and the ammonia desulfurization and ash-and-slag removal system is suitable for ammonia desulfurization and ash-and-slag removal for sintering smoke in the steel works.
Description
Technical field
The utility model relates to steel works sintering flue gas ammonia method desulfurizing cinder-removing system, belongs to the plant equipment class.
Background technology
The steel works sintering flue gas discharges sulfur dioxide in a large number, causes serious air pollution.Along with the national environmental protection policy requirements, the steel works sintering flue gas is progressively realized the desulfurization qualified discharge.
Sintering flue gas desulfurization has many technology, mainly contains ammonia process, magnesium method, calcium method etc. at present both at home and abroad.As a kind of novel, efficient, economic sulfur removal technology, the ammonia process of desulfurization progressively becomes the leading technology of sintering flue gas desulfurization.
The ammonia process of desulfurization is to utilize ammoniacal liquor and sulfur dioxide in flue gas reaction, thereby reaches desulfurized effect.Ammoniacal liquor in the ammonia process of desulfurization, ammonium sulfite solution, ammonium sulfate with sulfur dioxide in flue gas repeatedly in the air water contact process, the part dust is brought in the ammonia method desulfurizing system by above liquid phase in the flue gas, so that contains a large amount of lime-ash in the ammonia method desulfurizing system.Lime-ash has certain influence to ammonia method desulfurizing system in the system; Mainly cause system's interior conduit, reaction tower, concentrate a large amount of ash depositions in cooling tower, the equipment; The system that influences normally moves; Cause pipeline, equipment attrition corrosion and obstruction, cause ammonia process of desulfurization byproduct of ammonium sulfate quality to descend simultaneously, influence benefit.
Ammonia process of desulfurization cinder-removing system mainly adopts bag filter or self-cleaning filter at present; Because grey solid impurity particle little (particle size range is 0.5～15 μ m), quantity are many; Present stage, bag filter or self-cleaning filter deslagging difficulty, be prone to stifled, maintenance is frequent, operational management is complicated, the too high filter inner frame that causes of backwash pressure is fragile etc.
Summary of the invention
To the problem of above-mentioned existence, the purpose of the utility model is to provide a kind of under the prerequisite that does not influence the normal operation of the ammonia process of desulfurization, can remove to greatest extent lime-ash and the block steel works sintering flue gas ammonia method desulfurizing cinder-removing system of being convenient to transport of dehydration back lime-ash one-tenth in the ammonia method desulfurizing system.
For realizing above-mentioned purpose, the technical solution of the utility model is:
Steel works sintering flue gas ammonia method desulfurizing cinder-removing system; Said cinder-removing system is made up of towards stirring pump, ring-type agitating device, lime-ash solution elevating pump, settling tank, sludge pump, filter press, middle lift pot, middle elevator pump hydraulic reverse; First outlet that concentrates on the cooling tower is connected to the import that hydraulic reverse is dashed the stirring pump through pipeline; Hydraulic reverse is dashed the stirring delivery side of pump and is connected on the ring-type agitating device that is arranged on concentrated cooling tower inner bottom part through pipeline; Second outlet that concentrates on the cooling tower is connected to the import of lime-ash solution elevating pump through pipeline, and lime-ash solution elevating delivery side of pump is connected to the import of settling tank, the import of lift pot in the middle of the purified liquor outlet of settling tank is connected to through pipeline through pipeline; The import of elevator pump in the middle of the outlet of middle lift pot is connected to through pipeline; The middle delivery side of pump that promotes is connected to sulphur ammonium workshop through pipeline, and the sludge outlet of settling tank is connected to the import of sludge pump through pipeline, and the mud delivery side of pump is connected to the import of filter press through pipeline; The outlet of filter press connects flow divider through pipeline, lift pot and trench in the middle of the flow divider two ends are connected to through pipeline respectively.
Described filter press adopts the filter press of chamber-type press filter or band diaphragm pressing function.
Described settling tank top is adopted circular or square, and circular cone bucket or pyramid bucket are adopted in the bottom, and cone angle is 50～60 °.
Flusher is established in being connected between described settling tank and the sludge pump on the pipeline.
Adopt above technical scheme, the cinder-removing system of the utility model changed the deslagging difficulty that adopts bag filter or self-cleaning filter in the ammonia process of desulfurization cinder-removing system in the past and cause, it is stifled to be prone to, maintenance is frequent, operational management is complicated, backwash pressure is too high causes situations such as the filter inner frame is fragile.The cinder-removing system of the utility model has adopted deposition, twice lime-ash of press filtration to handle; Thereby realized twice shunting of clear liquid; The clearance of lime-ash has reached more than 90%, can realize the purpose that lime-ash becomes cake to be convenient to transport simultaneously, and can guarantee the sintering flue gas ammonia method desulfurizing system ordinary production.
Ammonia process of desulfurization cinder-removing system adopts the independent lift system to introduce lime-ash solution; Thereby can guarantee when steel works sintering flue gas ammonia method desulfurizing cinder-removing system fault; Can isolate the cinder-removing ammonia process of desulfurization main process system that unifies; Guarantee no matter can cinder-removing system normally move, ammonia process of desulfurization main process ordinary production.
The cinder-removing system of the utility model is rational in infrastructure, the lime-ash load adaptability is strong, operational management is simple, operating cost is low, need not add any flocculant and flocculation aid, is adapted to the steel works sintering flue gas ammonia method desulfurizing and removes lime-ash.
Description of drawings
Accompanying drawing is the structural representation of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
See accompanying drawing
Steel works sintering flue gas ammonia method desulfurizing cinder-removing system, said cinder-removing system is made up of towards stirring pump 1, ring-type agitating device 3, lime-ash solution elevating pump 4, settling tank 5, sludge pump 9, filter press 10, middle lift pot 6, middle elevator pump 7 hydraulic reverse.First outlet that concentrates on the cooling tower 2 is connected to the import that hydraulic reverse is dashed stirring pump 1 through pipeline; Hydraulic reverse is dashed the outlet of stirring pump 1 and is connected on the ring-type agitating device 3 that is arranged on concentrated cooling tower 2 inner bottom parts through pipeline; The ring-type agitating device is made up of looped pipeline and equally distributed shower nozzle; In concentrating the tower of lowering the temperature, form tangential circulation and stir, make concentrated cooling tower 2 interior lime-ash solution form turbulent flow, thereby prevent that lime-ash from depositing in concentrating cooling tower 2.Concentrate second on the cooling tower 2 and export the import that is connected to lime-ash solution elevating pump 4 through pipeline; The outlet of lime-ash solution elevating pump 4 is connected to the import of settling tank 5 through pipeline; Settling tank top is adopted circular or square, and circular cone bucket or pyramid bucket are adopted in the bottom, and cone angle is 50～60 °; Can realize mud gravity natural downslide in the settling tank, be convenient to spoil disposal.The settling tank static balance time is adapted to the very little grey solid impurity particle of particle diameter (particle size range is 0.5～15 μ m) deposition for being not less than 6h, need not add any flocculant and flocculation aid in the settling tank natural subsidence process, helps guaranteeing the purity of ammonium sulfate product.The import of lift pot 6 in the middle of the purified liquor outlet of settling tank 5 is connected to through pipeline; The import of elevator pump 7 in the middle of the outlet of middle lift pot 6 is connected to through pipeline; The outlet of middle elevator pump 7 is connected to sulphur ammonium workshop 8 through pipeline, is used for ammonium sulfate products production.The sludge outlet of settling tank 5 is connected to the import of sludge pump 9 through pipeline, and flusher is established in being connected between settling tank 5 and the sludge pump 9 on the pipeline, and flusher can adopt water under high pressure or compressed air, can avoid lime-ash and ammonium sulfate crystallization blocking pipe and equipment.Under the effect of settling tank natural subsidence, the clear liquid solid content that distributes can be smaller or equal to 200mg/l, and the mud solid content that distributes can be more than or equal to 30000mg/l.The outlet of sludge pump 9 is connected to the import of filter press 10 through pipeline, and filter press 10 adopts the filter press of chamber-type press filters or band diaphragm pressing function.Moisture percentage in sewage sludge through after filter press 10 dehydrations can reach 50～60%, realizes that lime-ash becomes cake to be convenient to transportation and can adapt to the variation of sinter fume amount of dust simultaneously.The filter cloth convenience for washing of filter press 10 is changed simple.The outlet of filter press 10 connects flow divider through pipeline, lift pot 6 in the middle of flow divider one end is connected to through pipeline, and the flow divider other end is connected to trench 11 through pipeline, thus liquid flows with filter cloth washing moisture after the filter that realizes when filter press 10 work, producing.
Claims (4)
1. steel works sintering flue gas ammonia method desulfurizing cinder-removing system; It is characterized in that: said cinder-removing system is made up of towards stirring pump (1), ring-type agitating device (3), lime-ash solution elevating pump (4), settling tank (5), sludge pump (9), filter press (10), middle lift pot (6), middle elevator pump (7) hydraulic reverse; First outlet that concentrates on the cooling tower (2) is connected to the import that hydraulic reverse is dashed stirring pump (1) through pipeline; Hydraulic reverse is dashed the outlet of stirring pump (1) and is connected on the ring-type agitating device (3) that is arranged on concentrated cooling tower (2) inner bottom part through pipeline; Concentrate second on the cooling tower (2) and export the import that is connected to lime-ash solution elevating pump (4) through pipeline; The outlet of lime-ash solution elevating pump (4) is connected to the import of settling tank (5) through pipeline; The import of lift pot (6) in the middle of the purified liquor outlet of settling tank (5) is connected to through pipeline, the import of elevator pump (7) in the middle of the outlet of middle lift pot (6) is connected to through pipeline, the outlet of middle elevator pump (7) is connected to sulphur ammonium workshop (8) through pipeline; The sludge outlet of settling tank (5) is connected to the import of sludge pump (9) through pipeline; The outlet of sludge pump (9) is connected to the import of filter press (10) through pipeline, and the outlet of filter press (10) connects flow divider through pipeline, lift pot (6) and trench (11) in the middle of the flow divider two ends are connected to through pipeline respectively.
2. steel works sintering flue gas ammonia method desulfurizing cinder-removing system as claimed in claim 1 is characterized in that: described filter press (10) adopts the filter press of chamber-type press filter or band diaphragm pressing function.
3. steel works sintering flue gas ammonia method desulfurizing cinder-removing system as claimed in claim 1 is characterized in that: described settling tank (5) top is adopted circular or square, and circular cone bucket or pyramid bucket are adopted in the bottom, and cone angle is 50～60 °.
4. steel works sintering flue gas ammonia method desulfurizing cinder-removing system as claimed in claim 1 is characterized in that: flusher is established in being connected between settling tank (5) and the sludge pump (9) on the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202909491U CN202173878U (en) | 2011-08-11 | 2011-08-11 | Ammonia desulfurization and ash-and-slag removal system for sintering smoke in steel works |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202909491U CN202173878U (en) | 2011-08-11 | 2011-08-11 | Ammonia desulfurization and ash-and-slag removal system for sintering smoke in steel works |
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| CN202173878U true CN202173878U (en) | 2012-03-28 |
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| CN2011202909491U Expired - Lifetime CN202173878U (en) | 2011-08-11 | 2011-08-11 | Ammonia desulfurization and ash-and-slag removal system for sintering smoke in steel works |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350202A (en) * | 2011-08-11 | 2012-02-15 | 武汉都市环保工程技术股份有限公司 | System for desulfuration and ash removal of flue gas from steel plant sintering by ammonia method |
| CN103495293A (en) * | 2013-10-22 | 2014-01-08 | 武汉钢铁(集团)公司 | Technology for removing ash in ammonia desulphurization grout and equipment thereof |
| CN114832448A (en) * | 2022-04-14 | 2022-08-02 | 柳州钢铁股份有限公司 | Treatment method for ammonia desulphurization solution sludge precipitation in steel industry |
-
2011
- 2011-08-11 CN CN2011202909491U patent/CN202173878U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350202A (en) * | 2011-08-11 | 2012-02-15 | 武汉都市环保工程技术股份有限公司 | System for desulfuration and ash removal of flue gas from steel plant sintering by ammonia method |
| CN103495293A (en) * | 2013-10-22 | 2014-01-08 | 武汉钢铁(集团)公司 | Technology for removing ash in ammonia desulphurization grout and equipment thereof |
| CN103495293B (en) * | 2013-10-22 | 2015-09-16 | 武汉钢铁(集团)公司 | Ash in ammonia desulphurization grout removes technique and equipment thereof |
| CN114832448A (en) * | 2022-04-14 | 2022-08-02 | 柳州钢铁股份有限公司 | Treatment method for ammonia desulphurization solution sludge precipitation in steel industry |
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Address after: 430205 No. 59 Liufang Avenue, Donghu High-tech Development Zone, Wuhan City, Hubei Province Patentee after: Zhongye Southern Urban Environmental Protection Engineering Technology Co., Ltd. Address before: 430071 Dongsha Building, 122 North Road, Wuchang District, Wuhan City, Hubei Province, 15th Floor Patentee before: Wuhan Urban Environment Protection Engineering Techn Co., Ltd. |
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Granted publication date: 20120328 |
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| CX01 | Expiry of patent term |