CN201189411Y - Gypsum dehydrator for flue gas desulfurization process - Google Patents
Gypsum dehydrator for flue gas desulfurization process Download PDFInfo
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- CN201189411Y CN201189411Y CNU2008200935273U CN200820093527U CN201189411Y CN 201189411 Y CN201189411 Y CN 201189411Y CN U2008200935273 U CNU2008200935273 U CN U2008200935273U CN 200820093527 U CN200820093527 U CN 200820093527U CN 201189411 Y CN201189411 Y CN 201189411Y
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- gypsum
- flue gas
- slurry
- gas desulfurization
- dehydrated
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Abstract
The utility model discloses a gypsum dehumidifier used during the process of flue gas desulfurization, wherein gypsum slurry is primarily separated by a swirler at first and gypsum slurry with the concentration between 45 and 50 percent are made to enter into a gypsum slurry distribution box, and then the slurry are dehydrated by a vacuum belt dehydrator, and finally gypsum filter cakes are obtained; and the gypsum filter cakes are cleaned and enter into a vapor-liquid separator after conflux with filtrate of the gypsum slurry after gypsum cleaning water is filtered, and then solid gypsum cakes are obtained after vapor-liquid separation. The device solves the problems that the water separation capability of a dewatering system is influenced by continuous accumulation of fine particle fly ash entering into a desulphurization system and dehydrated gypsum can not be taken as resources and reused due to high water content and Cl content in the dehydrated gypsum.
Description
Technical field:
The utility model relates to the thermal power plant lime stone---gypsum wet flue gas desulfurizing technology, the gypsum dehydration device in particularly a kind of wet process of FGD process.
Background technology:
Along with the development of power industry, the sulfur dioxide of coal-burning power plant discharging is serious day by day to the pollution of environment, and effective measures are flue gas desulfurization and sulfur dioxide reduces discharging.
The desulfurization of burning back is the desulfur technology that extensively adopts, and is called flue gas desulfurization again, the wet type lime stone---the gypsum method be at present most widely used in the world general also be the most ripe a kind of flue gas desulfurization technique, about the share to 85% of in world's desulphurization market, occupying.It has higher desulfuration efficiency.Single tower flue gas treating capacity can 3,000,000 Nm
3/ h has very important meaning to the flue gas desulfurization of sulphur coal, big unit.
In whole flue gas desulfur device, the importance of gypsum dehydration system is very important, because the quality of gypsum quality is the normal operation of the whole device of influence directly, if the gypsum of producing does not reach certain quality, will cause product to hoard so, perhaps discharge gypsum slurries and also can form secondary pollution.Therefore, need seek the rational gypsum dehydration device of a cover normally moves to guarantee whole desulphurization system.
Summary of the invention:
For addressing the above problem, the purpose of this utility model is to provide a kind of gypsum dehydration device of flue gas desulfurization course.
For achieving the above object, the utility model adopts following technical scheme:
A kind of gypsum dehydration device that is used for flue gas desulfurization course, include cyclone, gypsum slurries distributor box, vacuum belt dewaterer, gypsum belt conveyor, filtrate water box and inspissator, described cyclone is communicated with the gypsum slurries distributor box, and described gypsum slurries distributor box bottom circulation duct is communicated with filtrate water box by vacuum belt dewaterer.
Described vacuum belt dewaterer comprises vavuum pump, gas-liquid separator, filter cloth washing water tank and filter cloth washing water pump.
This device solves to influence in the water separation capability of dewatering system and the dehydrated gypsum water content and Cl-content higher owing to the continuous accumulation of the fine grained flyash that enters desulphurization system, and cause the dehydrated gypsum can not be as the problem of resource recycling.
Description of drawings:
Fig. 1 is the utility model process chart.
Identifier declaration among the figure: cyclone 1, gypsum slurries distributor box 2, vacuum belt dewaterer are moving 3, belt conveyor 4, vavuum pump 5, gas-liquid separator 6, filtrate water box 7, inspissator 8.
The specific embodiment:
Core concept of the present utility model is: get to earlier in the elementary hydrocyclone with the gypsum slurries excavationg pump in the reaction tank of gypsum slurries self-absorption tower bottom, after initial gross separation, the gypsum slurries of 45～50% concentration enters the gypsum slurries distributor box, enter the vacuum belt dewaterer dehydration by pipeline then, obtain gypsum filter cake; Simultaneously gypsum filter cake is cleaned, and after the gypsum rinse water leached, enter gas-liquid separator together with the filter liquor of calcium plaster itself after confluxing, obtain solid-state gypsum patty will through after the gas-liquid separation, liquid slurry then enters filtrate water box.
For setting forth thought of the present utility model and purpose, the utility model is described in further details below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, a kind of gypsum dehydration device that is used for flue gas desulfurization course, include cyclone 1, gypsum slurries distributor box 2, vacuum belt dewaterer 3, gypsum belt conveyor 4, filtrate water box 7 and inspissator 8, described cyclone 1 is communicated with gypsum slurries distributor box 2, and described gypsum slurries distributor box 2 bottom circulation ducts are communicated with filtrate water box 7 by vacuum belt dewaterer 3.Wherein get to earlier in the elementary hydrocyclone 1 with the gypsum slurries excavationg pump in the reaction tank of gypsum slurries self-absorption tower bottom, after cyclone 1 initial gross separation, the spillage part then directly enters the inspissator 8 that is communicated with cyclone 1 and concentrates, and the gypsum slurries of about 45～50% concentration enters gypsum slurries distributor box 2, carry out Separation of Solid and Liquid by gypsum slurries distributor box 2, and the slurries after will separating are by vacuum belt dewaterer 3 dehydrations, and obtain gypsum filter cake, simultaneously gypsum filter cake is cleaned, and after the gypsum rinse water leached, filter liquor together with calcium plaster itself enters gas-liquid separator after confluxing, obtain solid-state gypsum patty will through after the gas-liquid separation.
The utility model operation principle is:
At first the gypsum that forms in slurries pond, absorption tower is delivered to gypsum waterpower rotational flow station by the absorption tower excavationg pump with it, and the gypsum hydrocyclone comprises a plurality of gypsum hydraulic cyclone, and gypsum slurries obtains Separation of Solid and Liquid by centrifugal cyclone.
The part that gypsum slurries is rarer enters overflow, overflowing liquid is transported to concentration in the inspissator, tiny fly ash grain occupies bigger proportion in its concentrate, for avoiding its dewatering system to bring influence to the rear portion, it is directly entered power plant's Ash Removal System as waste water, and dense slurries flow away from the bottom.
Gypsum directly advances the secondary dewatering system through behind the gypsum slurries distributor box in the underflow, and solid content is that about 4% overflow slurry is then flow automatically back in the absorption tower.
The gypsum slurries that enters the secondary dewatering system is evenly distributed on the filter cloth of vacuum belt dewaterer, carries out vacuum dehydration.
Water from filtrate water box and filter cloth washing water tank cleans gypsum filter cake and filter cloth, with the Cl-content in the control gypsum.
After the gypsum rinse water is filtered off, after confluxing, enter moisture trap together with the filter liquor of calcium plaster itself.
Water ring vacuum pump will be delivered to the filter cloth washing water tank from the isolated water of moisture trap.A part is returned lime stone pulping system, and another part is squeezed in the absorption tower and reused, and some is by the wastewater treatment of discharge of wastewater pump venting.
Be conveyed into the bottom gypsum that is positioned at the gypsum dehydration workshop through the gypsum patty will after the secondary dehydration through belt conveyor and store the warehouse.
More than a kind of gypsum dehydration device that is used for flue gas desulfurization course provided by the utility model is described in detail, used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (2)
1, a kind of gypsum dehydration device that is used for flue gas desulfurization course, it is characterized in that including cyclone (1), gypsum slurries distributor box (2), vacuum belt dewaterer (3), gypsum belt conveyor (4), filtrate water box (7) and inspissator (8), described cyclone (1) is communicated with gypsum slurries distributor box (2), and described gypsum slurries distributor box (2) bottom circulation duct is communicated with filtrate water box (7) by vacuum belt dewaterer (3).
2, gypsum dehydration device according to claim 1 is characterized in that described vacuum belt dewaterer (3) comprises vavuum pump (5), gas-liquid separator (6), filter cloth washing water tank and filter cloth washing water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200935273U CN201189411Y (en) | 2008-04-22 | 2008-04-22 | Gypsum dehydrator for flue gas desulfurization process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200935273U CN201189411Y (en) | 2008-04-22 | 2008-04-22 | Gypsum dehydrator for flue gas desulfurization process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201189411Y true CN201189411Y (en) | 2009-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200935273U Expired - Lifetime CN201189411Y (en) | 2008-04-22 | 2008-04-22 | Gypsum dehydrator for flue gas desulfurization process |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453522A (en) * | 2013-08-22 | 2013-12-18 | 清华大学 | Desulfurization system and desulfurization method for circulating fluidized bed boiler |
| CN107308716A (en) * | 2017-08-31 | 2017-11-03 | 大唐环境产业集团股份有限公司 | A kind of solid-liquid separation system |
| CN107324371A (en) * | 2017-06-22 | 2017-11-07 | 合肥通用机械研究院 | A kind of centrifugal production technology for separating gypsum |
| CN108178362A (en) * | 2016-12-08 | 2018-06-19 | 中电华创电力技术研究有限公司 | A kind of desulfurization by lime gypsum method wastewater zero emission treatment method and system |
| CN113402149A (en) * | 2021-06-21 | 2021-09-17 | 华能巢湖发电有限责任公司 | Vacuum dehydration system for desulfurization wastewater sludge |
| CN114100236A (en) * | 2021-11-12 | 2022-03-01 | 泰安路发节能环保设备有限公司 | High-strength gypsum slurry treatment method based on negative pressure dehydration |
-
2008
- 2008-04-22 CN CNU2008200935273U patent/CN201189411Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453522A (en) * | 2013-08-22 | 2013-12-18 | 清华大学 | Desulfurization system and desulfurization method for circulating fluidized bed boiler |
| CN103453522B (en) * | 2013-08-22 | 2016-05-18 | 清华大学 | A kind of desulphurization system of circulating fluidized bed boiler and method |
| CN108178362A (en) * | 2016-12-08 | 2018-06-19 | 中电华创电力技术研究有限公司 | A kind of desulfurization by lime gypsum method wastewater zero emission treatment method and system |
| CN108178362B (en) * | 2016-12-08 | 2024-03-15 | 中电华创电力技术研究有限公司 | Limestone-gypsum desulfurization wastewater zero-emission treatment method and system |
| CN107324371A (en) * | 2017-06-22 | 2017-11-07 | 合肥通用机械研究院 | A kind of centrifugal production technology for separating gypsum |
| CN107324371B (en) * | 2017-06-22 | 2018-12-04 | 合肥通用机械研究院有限公司 | A kind of centrifugal production technology separating gypsum |
| CN107308716A (en) * | 2017-08-31 | 2017-11-03 | 大唐环境产业集团股份有限公司 | A kind of solid-liquid separation system |
| CN113402149A (en) * | 2021-06-21 | 2021-09-17 | 华能巢湖发电有限责任公司 | Vacuum dehydration system for desulfurization wastewater sludge |
| CN114100236A (en) * | 2021-11-12 | 2022-03-01 | 泰安路发节能环保设备有限公司 | High-strength gypsum slurry treatment method based on negative pressure dehydration |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20090204 |
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| CX01 | Expiry of patent term |