CN102101014A - Accurate desulfurization system based on dense flow absorber desulfuration process - Google Patents
Accurate desulfurization system based on dense flow absorber desulfuration process Download PDFInfo
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- CN102101014A CN102101014A CN 201110032371 CN201110032371A CN102101014A CN 102101014 A CN102101014 A CN 102101014A CN 201110032371 CN201110032371 CN 201110032371 CN 201110032371 A CN201110032371 A CN 201110032371A CN 102101014 A CN102101014 A CN 102101014A
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Abstract
The invention relates to an accurate desulfurization system based on a dense flow absorber desulfuration process, belonging to the technical field of dense flow absorber desulfuration. The system comprises a frequency changer, an intermediate hopper, an electronic scale belt, a water quantity regulating valve and a PLC (Programmable Logic Controller) control system, wherein the frequency changer is additionally arranged on a star-shaped feeding machine at the lower part of a dust remover ash bucket, the intermediate hopper is additionally arranged at the lower part of a scraping machine, and the electronic scale belt is arranged under the intermediate bin; and the star-shaped feeding machine is controlled by adopting the frequency changer to discharge ash, the intermediate bin is a weighting type intermediate bin and used for controlling the position of the bin, the electronic scale belt controls the ash adding quantity, the water quantity regulating valve controls the water quantity, and the PLC control system forms a closed ring control loop. The invention has the advantages that a dense flow absorber desulfuration system realizes accurate desulfuration through changing the process; the accurate gas desulfurization system can be used for continuously, stably and accurately carrying out desulfurization; and unstable system desulfurization brought by frequent manual operation and experimental operation of operators is avoided.
Description
Technical field
The invention belongs to the dense-phase tower desulfurizing technical field, a kind of accurate desulphurization system based on dense-phase tower desulfurizing technology is provided especially, with inlet SO
2Change in concentration can be used in the sintering flue gas desulfurization system automatically with addition of the method for the ash amount and the water yield.
Background technology
What Shoudu Iron and Steel Co mining company sintering plant 360 flat flue gas of sintering machine equipment adopted is the dense-phase tower desulfurizing technology, the ash circulatory system is to use the strength conveying desulfurizing agent is transported to bucket elevator, deliver to humidifier by bucket elevator and enter desulfurizing tower participation desulphurization reaction, a desulfurization ash part deposits in desulfurizing tower and the transitional storehouse ash bucket, major part deposits in the dust collector ash hopper through sack cleaner with flue gas, every deduster has 10 ash buckets, a star feeder is arranged under each ash bucket, it under the star feeder scraper plate machine, ash in the ash bucket enters the scraper plate machine through batcher, and the scraper plate machine is delivered to the desulfurization ash bucket elevator again and participated in circulation again.
360 flat sintering machine dense-phase tower desulfurizing systems, realize that desulfurization reaches desulfuration efficiency and must add a certain amount of water according to the ash amount in the flue gas recirculation system, guarantee that SO2 in the flue gas and the suitable desulfurizing agent that contains certain moisture fully react, realize desulfuration efficiency, the ash amount and the water yield of therefore controlling the system that enters are to realize the key of desulfurization.
Amount of water is controlled by the bucket elevator electric current, and the bucket elevator electric current is by each star feeder dreg discharge amount decision.Former design is by post start and stop star feeder control bucket elevator electric current, and the bucket elevator electric current is low can not satisfy system and add the water requirement time, needs the post in time to adjust star feeder.At first the site operation personnel will judge by rule of thumb that the bucket elevator electric current to how many times, in time adjust, and adjusts slowly, will influence desulfuration efficiency; Secondly the site operation personnel can't judge which ash bucket has ash, how many ashes are arranged, and can only adjust in groping.This kind method of operating randomness is big, and site operation personnel's labour intensity is big, and the activity duration is long, and it is big to occur the bucket elevator current fluctuation inevitably, influences desulfuration efficiency, can not accomplish the continous-stable desulfurization.
Therefore need to study technology method accurate, stably desulphurizing.
Summary of the invention
The object of the present invention is to provide a kind of accurate desulphurization system, change, accurate system with addition of the ash amount and the water yield according to the inlet sulfur dioxide concentration based on dense-phase tower desulfurizing technology.
The present invention includes frequency converter, intermediate bin, electronic scale belt, water regulating valve, PLC control system; Increase frequency converter at dust collector ash hopper bottom star-shaped feeding machine, add intermediate bin, divide into electronic belt scale at intermediate bin in scraper plate machine bottom; Adopt the Frequency Converter Control star feeder to unload ash, intermediate bin is the Weighing type intermediate bin, and in order to the control position in storehouse, the control of electronic scale belt adds the ash amount, the water regulating valve control water yield, and the PLC control system forms close loop control circuit.
Change the star-shaped feeding machine rotating speed by adjusting frequency converter frequency, reach the purpose of regulating dreg discharge amount, thereby the position in storehouse in grey storehouse reaches standard in the middle of the control next procedure.
Intermediate bin is the device that savings participates in the circulating ash of desulphurization reaction, is conical closed iron case, its big I as required deposit the ash amount and the space size designs voluntarily and processes, above opening be ash inlet, lower openings is an ash hole.
Belted electronic balance is the metering material of pulling out in the intermediate bin accurately, just is transported to inventory in the desulfurizing tower by bucket elevator.
The PLC control system is according to top technology, by detecting the entrance so2 concentration signal, need to determine the outlet SO2 concentration of control, adjusts blanking amount, amount of water automatically, reaches stable, accurately controls the purpose of desulfuration efficiency.
The desulfurization ash needs to add water before entering desulfurizing tower, and according to the accurate inventory of electronic belt scale metering, water regulating valve is adjusted the water yield automatically, makes the desulfurization ash that enters in the desulfurizing tower satisfy the desulfurization needs.
The technological process of system: heavy according to the intermediate bin storehouse, utilize frequency converter to adjust the star feeder feeding coal, reach the purpose of stablizing intermediate bin ash amount.The PLC control system is set the heavy upper and lower bound in intermediate bin storehouse, when reaching the intermediate bin storehouse heavily down in limited time, strengthens star feeder blanking amount by frequency converter, heavily goes up in limited time when reaching the intermediate bin storehouse, reduces star feeder blanking amount, satisfies the requirement of intermediate bin warehousing.Gather inlet sulfur dioxide concentration value, control system is calculated the ash that adds that needs automatically and is measured and amount of water, feeds back to belted electronic balance and adds water solenoid valve and adjust automatically, according to the inlet sulfur dioxide concentration, adjustment adds ash amount and amount of water, guarantees that desulphurization system satisfies technological requirement.
Effect of the present invention is: by changing technological process, the dense-phase tower desulfurizing system realizes accurate desulfurization.System is according to the intermediate bin warehousing, and control star feeder dreg discharge amount reaches the warehousing requirement, satisfies the ash amount that participates in desulphurization reaction; According to the inlet sulfur dioxide concentration, the automatic calculating of control system need with addition of the ash amount and the water yield, can realize that desulphurization system is continuous, stable, carry out desulfurization accurately, the unsettled phenomenon of system's desulfurization of having avoided frequent manual operation of operator and empirical operation to bring.
Description of drawings
Fig. 1 is the desulphurization system process chart.
Fig. 2 is a desulphurization system process chart of the present invention.
The specific embodiment
Fig. 1, Fig. 2 are a kind of specific embodiment of the present invention.
The present invention includes frequency converter, intermediate bin, electronic scale belt, water regulating valve, PLC control system; Increase frequency converter at dust collector ash hopper bottom star-shaped feeding machine, add intermediate bin, divide into electronic belt scale at intermediate bin in scraper plate machine bottom; Adopt the Frequency Converter Control star feeder to unload ash, intermediate bin is the Weighing type intermediate bin, and in order to the control position in storehouse, the control of electronic scale belt adds the ash amount, the water regulating valve control water yield, and the PLC control system forms close loop control circuit.
1, frequency converter: increase Frequency Converter Control at dust collector ash hopper bottom star-shaped feeding machine, change the star-shaped feeding machine rotating speed, reach the purpose of regulating dreg discharge amount, thereby the position in storehouse in grey storehouse reaches standard in the middle of the control next procedure by adjusting frequency converter frequency.
2, intermediate bin: add intermediate bin in scraper plate machine bottom, middle grey storehouse is the device that savings participates in the circulating ash of desulphurization reaction, be conical closed iron case, its big I ash amount of depositing and space size as required designs voluntarily and processes, top opening is an ash inlet, and lower openings is an ash hole.
3, belted electronic balance: divide into electronic belt scale at intermediate bin, the accurate metering material of pulling out in the intermediate bin just is transported to inventory in the desulfurizing tower by bucket elevator.
4, water regulating valve: the desulfurization ash needs to add water before entering desulfurizing tower, according to the accurate inventory of electronic belt scale metering, adjusts water regulating valve automatically, makes the desulfurization ash that enters in the desulfurizing tower satisfy the desulfurization needs.
5, PLC control system: according to top technology,, need to determine the outlet SO2 concentration of control, adjust blanking amount, amount of water automatically, reach stable, accurately control the purpose of desulfuration efficiency by detecting the entrance so2 concentration signal.
Claims (6)
1. the accurate desulphurization system based on dense-phase tower desulfurizing technology is characterized in that, this system comprises frequency converter, intermediate bin, electronic scale belt, water regulating valve, PLC control system; Increase frequency converter at dust collector ash hopper bottom star-shaped feeding machine, add intermediate bin, divide into electronic belt scale at intermediate bin in scraper plate machine bottom; Adopt the Frequency Converter Control star feeder to unload ash, intermediate bin is the Weighing type intermediate bin, and in order to the control position in storehouse, the control of electronic scale belt adds the ash amount, the water regulating valve control water yield, and the PLC control system forms close loop control circuit.
2. system according to claim 1 is characterized in that, changes the star-shaped feeding machine rotating speed by adjusting frequency converter frequency, reach the purpose of regulating dreg discharge amount, thereby the position in storehouse in grey storehouse reaches standard in the middle of the control next procedure.
3. system according to claim 1 is characterized in that, intermediate bin is the device that savings participates in the circulating ash of desulphurization reaction, is conical closed iron case, above opening be ash inlet, lower openings is an ash hole.
4. system according to claim 1 is characterized in that, belted electronic balance is the metering material of pulling out in the intermediate bin accurately.
5. system according to claim 1 is characterized in that the PLC control system is according to top technology, by detecting the entrance so2 concentration signal, determine to need the outlet SO2 concentration of control, adjust blanking amount, amount of water automatically, reach stable, accurately control the purpose of desulfuration efficiency.
6. system according to claim 1 is characterized in that, the desulfurization ash needs to add water before entering desulfurizing tower, and according to the accurate inventory of electronic belt scale metering, water regulating valve is adjusted the water yield automatically, makes the desulfurization ash that enters in the desulfurizing tower satisfy the desulfurization needs.
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| CN201110032371A CN102101014B (en) | 2011-01-29 | 2011-01-29 | Accurate desulfurization system based on dense flow absorber desulfuration process |
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| CN201110032371A CN102101014B (en) | 2011-01-29 | 2011-01-29 | Accurate desulfurization system based on dense flow absorber desulfuration process |
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| CN102101014A true CN102101014A (en) | 2011-06-22 |
| CN102101014B CN102101014B (en) | 2012-09-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910461A (en) * | 2012-11-02 | 2013-02-06 | 鞍钢集团工程技术有限公司 | Desulfurized fly ash long-time storage and precise loading method |
| CN109351145A (en) * | 2018-11-01 | 2019-02-19 | 唐山钢铁集团有限责任公司 | A kind of device for the operation of dense flow absorber desulphurization plant unilateral side tower |
| CN113952830A (en) * | 2021-11-16 | 2022-01-21 | 佛山赛因迪环保科技有限公司 | Calcium-based moving bed full-dry type desulfurization and dust removal method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1634635A (en) * | 2004-12-03 | 2005-07-06 | 北京科技大学 | Dense phase dry tower smoke desulfurizing and dust cleaning apparatus |
| CN101318101A (en) * | 2008-07-23 | 2008-12-10 | 朱学智 | Dry desulfurizing process implementing automatic control based on environment friendly monitoring network and numeration table |
| CN101532782A (en) * | 2009-04-22 | 2009-09-16 | 中冶赛迪工程技术股份有限公司 | Sintering gas purifying and waste heat recovering technique |
-
2011
- 2011-01-29 CN CN201110032371A patent/CN102101014B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1634635A (en) * | 2004-12-03 | 2005-07-06 | 北京科技大学 | Dense phase dry tower smoke desulfurizing and dust cleaning apparatus |
| CN101318101A (en) * | 2008-07-23 | 2008-12-10 | 朱学智 | Dry desulfurizing process implementing automatic control based on environment friendly monitoring network and numeration table |
| CN101532782A (en) * | 2009-04-22 | 2009-09-16 | 中冶赛迪工程技术股份有限公司 | Sintering gas purifying and waste heat recovering technique |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910461A (en) * | 2012-11-02 | 2013-02-06 | 鞍钢集团工程技术有限公司 | Desulfurized fly ash long-time storage and precise loading method |
| CN109351145A (en) * | 2018-11-01 | 2019-02-19 | 唐山钢铁集团有限责任公司 | A kind of device for the operation of dense flow absorber desulphurization plant unilateral side tower |
| CN113952830A (en) * | 2021-11-16 | 2022-01-21 | 佛山赛因迪环保科技有限公司 | Calcium-based moving bed full-dry type desulfurization and dust removal method and device |
| CN113952830B (en) * | 2021-11-16 | 2023-12-22 | 佛山赛因迪环保科技有限公司 | Full-dry desulfurization and dust removal method and device for calcium-based moving bed |
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| CN102101014B (en) | 2012-09-05 |
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Address after: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee after: SHOUGANG GROUP Co.,Ltd. Address before: 100041 Shijingshan Road, Shijingshan District, Shijingshan District, Beijing Patentee before: SHOUGANG Corp. |
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Effective date of registration: 20230117 Address after: 025 Zhao'an street, Qian'an Economic Development Zone, Tangshan City, Hebei Province 064400 Patentee after: QIAN'AN IRON AND STEEL COMPANY OF SHOUGANG Corp. Address before: 100041 No. 68, Shijingshan Road, Shijingshan District, Beijing Patentee before: SHOUGANG GROUP Co.,Ltd. |