CN202778270U - Slurry preparation device for smoke desulfuration with lime-gypsum method of sintering machine - Google Patents
Slurry preparation device for smoke desulfuration with lime-gypsum method of sintering machine Download PDFInfo
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- CN202778270U CN202778270U CN 201220459168 CN201220459168U CN202778270U CN 202778270 U CN202778270 U CN 202778270U CN 201220459168 CN201220459168 CN 201220459168 CN 201220459168 U CN201220459168 U CN 201220459168U CN 202778270 U CN202778270 U CN 202778270U
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- lime
- slurry
- slurries
- storage tank
- sintering machine
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Abstract
The utility model provides a slurry preparation device for smoke desulfuration with a lime-gypsum method of a sintering machine. The slurry preparation device comprises a jaw-type crushing machine, a lime-bucket-type lifting machine, an absorbent storing cabin, a spiral conveyor, a quick lime digesting device, a solid-liquid separator, a dreg extracting machine and an absorbent slurry pot. The slurry preparation device adopts self-sintered lime of a steel factory; the lime is conveyed into the absorbent storing cabin through the lime-bucket-type lifting machine, and the supply of the lime is automatically controlled by a computer according to a liquid level meter in the slurry pot and a pH (Potential of Hydrogen) value of slurry in a tower; after the lime is prepared into the slurry by the digesting device, the slurry overflows to the absorbent slurry pot from the upper part of the digesting device; the prepared slurry is pumped into a desulfuration tower by a slurry pump; and undigested lime stones and other grains are extracted by the dreg extracting machine and are transported to a sintering factory to prepare materials. Raw materials for preparing the slurry adopt the self-sintered lime of the steel factory and have no special requirements, and thus the cost is low; the slurry is free from hard grains, so that the service life of a circulating pump blade is prolonged; and the slurry preparation device is simple and compact in structure, the blocking of a pipeline is alleviated, the investment and operation costs are low, and the desulfuration efficiency reaches up to be higher than 95%.
Description
Technical field
The utility model relates to the flue gas of sintering machine field, relates in particular to lime-gypsum method slurries preparation facilities in a kind of flue gas of sintering machine.
Background technology
Along with the increase of people's environmental consciousness, China further improves the requirement of industrial discharge flue gas.SO2 emissions in sintering machine, the pelletizing flue gas account for more than 70% of whole metallurgical discharge capacity, and in sintering deposit was produced, one ton of sintering deposit of every production discharged 4000 cubic metres flue gas approximately, and wherein the content of sulfur dioxide in the flue gas is generally at 1000mg/m
3To 1500mg/m
3, indivedual enterprises can reach 3000mg/m
3, China has strengthened the renovation dynamics to the sintering device flue gas discharging, requires SO in the sintering device flue gas
2Content is less than 100mg/m
3Various flue gas of sintering machine method sequential use are in flue gas of sintering machine, and lime stone (lime)-gypsum method flue gas desulfurization still occupies larger proportion in Sintering Process of Iron Making flue gas desulfurization field.
Lime-gypsum method flue gas desulfurization is a kind of wet-type calcium desulfuration technique, and its reaction equation is as follows:
CaO?+?H
2O→Ca
2＋+?2OH
－
SO
2＋H
2O→H
2SO
3
HSO
3 －＋1/2O
2→HSO
4 －
Ca
2＋＋2OH
－＋2H
＋＋SO
4 2－＋H
2O→CaSO
4·2H
2O
At present, the slurries preparation facilities ubiquity in flue gas desulfurization field to material quality have relatively high expectations, the shortcomings such as circulating pump blade service life is short, pipeline easily stops up, operating cost height.The utility model just is being based on the problems referred to above, invented innovatively a kind of slurries preparation facilities for lime-gypsum method flue gas desulfurization, it provides desulfurization slurry for the desulfurization of sintering device flue gas calcium method, the slurries that prepare are stored in the serum pot, and can constantly add in the desulfurizing tower according to the size of the pH of slurries in the desulfurizing tower, this apparatus structure is simply compact, has overcome short, the easy technical problem such as plugging of life-span, investment and operating cost are cheap, are fit to very much flue gas of sintering machine.
Summary of the invention
The utility model discloses lime-gypsum method slurries preparation facilities in a kind of flue gas of sintering machine, it comprises jaw crusher, bucket elevator, the quick lime storage tank, conveying worm, limeslaker, solid-liquid separator, slag extracting machine and absorbent slurry storage tank.Be broken into≤20mm by jaw crusher from burnt lime, send into the quick lime storage tank by bucket elevator, subsequently, flow to limeslaker by conveying worm, postdigestive slurries pass through solid-liquid separator, slurries enter the absorbent slurry storage tank, and for desulfurizing tower provides desulfurization slurry, the solid slag after the separation is collected and turned back to sintering machine and uses by slag extracting machine.
Further, described limeslaker adopts the horizontal drum that rotates, and the lime slaking process is continuous, and computer is finished automatic control according to the variation of the pH value of slurries in the desulfurizing tower.Further, postdigestive slurries enter in the absorbent slurry storage tank by liquid-solid separator, subsequently, according to the pH value in the desulfurizing tower, send into desulfurizing tower by slush pump.Further, the quick lime storage tank can be stored 3 to 7 days consumption, and lime is wherein sent into limeslaker by rotary feeder, auger conveyor, changes calcium oxide into calcium hydroxide slurry.
Usefulness of the present utility model is:
For the problem that exists in the lime-gypsum method desulfur technology in the sintering flue gas desulfurization, from burnt lime, be prepared into desulfurization slurry by this device in the utility model employing enterprise, do not contain solid particle in the slurries.Solve slurries pipeline blockage problem, and the service life that can improve the desulphurization circulating pump blade.Needn't adopt≤200 purpose pulverized limestones, reduce the slurrying cost.Desulfuration efficiency can reach more than 95%.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model slurries preparation facilities schematic diagram.
1, jaw crusher; 2, underground hopper; 3, push-pull valve; 4, bucket elevator; 5, bag-type dust; 6, lime storage tank; 7, rotary feeder; 8, auger conveyor; 9, burnt lime digester; 10, steam is pounced on collection cover Separation of Solid and Liquid mechanism; 11, slag extracting machine; 12, solid-liquid separator; 13, slurry feeding pump; 14, slurries storage tank; 15, pH meter; 16, circulation slurry pump; 17, technique water tank; 18, technique water pump; 19, desulfurizing tower.
The specific embodiment
Utilize in the enterprise from burnt lime by jaw crusher 1, quick lime is broken into particle less than 20mm, send into quick lime storage tank 6 by bucket elevator 4, according to the variation of the pH value of slurries in the desulfurizing tower, regulate the rotating speed dosing of rotary feeder 7.After quick lime enters burnt lime digester, adjust the rotation of burnt lime digester 9, quick lime is fully digested enter solid-liquid separator 12.Insufficiently burnt limestone particle is discharged by slag extracting machine 11 and is sent into sintered material.Slurries overflow in the slurries storage tank 14 by the suitable for reading of solid-liquid separator 12.The slurries that prepare are sent into desulfurizing tower 19 according to the variation of the pH value of slurries in the sulphur tower by slurry feeding pump 13.
Claims (4)
1. lime-gypsum method slurries preparation facilities in the flue gas of sintering machine, it is characterized in that: this device comprises jaw crusher, bucket elevator, the quick lime storage tank, conveying worm, limeslaker, solid-liquid separator, slag extracting machine and absorbent slurry storage tank, be broken into≤20mm by jaw crusher from burnt lime, send into the quick lime storage tank by bucket elevator, subsequently, flow to limeslaker by conveying worm, postdigestive slurries pass through solid-liquid separator, slurries enter the absorbent slurry storage tank, and for desulfurizing tower provides desulfurization slurry, the solid slag after the separation is collected and turned back to sintering machine and uses by slag extracting machine.
2. lime-gypsum method slurries preparation facilities in a kind of flue gas of sintering machine according to claim 1, it is characterized in that: described limeslaker adopts the horizontal drum that rotates, the lime slaking process is continuous, and computer is finished automatic control according to the variation of the pH value of slurries in the desulfurizing tower.
3. lime-gypsum method slurries preparation facilities in a kind of flue gas of sintering machine according to claim 1, it is characterized in that: postdigestive slurries enter in the absorbent slurry storage tank by liquid-solid separator, subsequently, according to the pH value in the desulfurizing tower, send into desulfurizing tower by slush pump.
4. lime-gypsum method slurries preparation facilities in a kind of flue gas of sintering machine according to claim 1, it is characterized in that: the quick lime storage tank can be stored 3 to 7 days consumption, lime is wherein sent into limeslaker by rotary feeder, auger conveyor, changes calcium oxide into calcium hydroxide slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220459168 CN202778270U (en) | 2012-09-11 | 2012-09-11 | Slurry preparation device for smoke desulfuration with lime-gypsum method of sintering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220459168 CN202778270U (en) | 2012-09-11 | 2012-09-11 | Slurry preparation device for smoke desulfuration with lime-gypsum method of sintering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202778270U true CN202778270U (en) | 2013-03-13 |
Family
ID=47805615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220459168 Expired - Fee Related CN202778270U (en) | 2012-09-11 | 2012-09-11 | Slurry preparation device for smoke desulfuration with lime-gypsum method of sintering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202778270U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106039798A (en) * | 2016-07-15 | 2016-10-26 | 新兴铸管股份有限公司 | Desulfurization slurry slag extraction device |
| CN110292844A (en) * | 2019-06-25 | 2019-10-01 | 四川省星船城水泥股份有限公司 | A kind of new dry process preheater kiln tail smoke-box |
| CN112755776A (en) * | 2020-12-18 | 2021-05-07 | 华能国际电力股份有限公司上海石洞口第一电厂 | Limestone and gypsum long-distance conveying and processing system for wet desulphurization of power plant |
-
2012
- 2012-09-11 CN CN 201220459168 patent/CN202778270U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106039798A (en) * | 2016-07-15 | 2016-10-26 | 新兴铸管股份有限公司 | Desulfurization slurry slag extraction device |
| CN110292844A (en) * | 2019-06-25 | 2019-10-01 | 四川省星船城水泥股份有限公司 | A kind of new dry process preheater kiln tail smoke-box |
| CN112755776A (en) * | 2020-12-18 | 2021-05-07 | 华能国际电力股份有限公司上海石洞口第一电厂 | Limestone and gypsum long-distance conveying and processing system for wet desulphurization of power plant |
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Legal Events
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100080 room 1615, earth science and technology building, No. 67, North four Ring West Road, Haidian District, Beijing Patentee after: BEIJING ZHONGKE INNOVATION PARK TECHNOLOGY CO.,LTD. Address before: 100080 room 1615, earth science and technology building, No. 67, North four Ring West Road, Haidian District, Beijing Patentee before: Beijing Zhongke Innovation Park Environment Technology Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 100093 Beijing city Haidian District minzhuang Road No. 3 Building No. 11 Room 102 West Yuquan Huigu Patentee after: BEIJING ZHONGKE INNOVATION PARK TECHNOLOGY CO.,LTD. Address before: 100080 room 1615, earth science and technology building, No. 67, North four Ring West Road, Haidian District, Beijing Patentee before: BEIJING ZHONGKE INNOVATION PARK TECHNOLOGY CO.,LTD. |
|
| CP02 | Change in the address of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20210911 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |