CN2813074Y - Gypsum slurry dewatering device in wet-process flue gas desulfurizing system - Google Patents
Gypsum slurry dewatering device in wet-process flue gas desulfurizing system Download PDFInfo
- Publication number
- CN2813074Y CN2813074Y CN 200520074534 CN200520074534U CN2813074Y CN 2813074 Y CN2813074 Y CN 2813074Y CN 200520074534 CN200520074534 CN 200520074534 CN 200520074534 U CN200520074534 U CN 200520074534U CN 2813074 Y CN2813074 Y CN 2813074Y
- Authority
- CN
- China
- Prior art keywords
- gypsum
- water
- absorption tower
- cyclone
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a gypsum slurry dewatering device in a wet-process flue gas desulfurizing system, which is a gypsum slurry dewatering device for the field of a wet-process flue gas desulfurizing system. The utility model is composed of a limestone slurry box (2), a limestone slurry pump (2.1), a limestone slurry backflow regulating valve (2.2), an absorbing tower (3), a gypsum slurry discharge pump (5), a regulating valve (5.1) of a return pipe of the gypsum slurry discharge pump, a vacuum conveyer belt (6), a filter liquor water tank (7), a gypsum cyclone (8), an overflow box (8.1) and a waste water cyclone (10), wherein most overflow of the gypsum cyclone is led out from the upper part of the overflow box to be guided to the down stream side of the regulating valve of the return pipe of the gypsum slurry discharge pump; a fraction of overflow is led out from the lower part of the overflow box to be guided to the waste water cyclone. The filter liquor water of the vacuum conveyer belt is mixed with the compensation water of FGD process in the filter liquor water tank so as to obtain the filter liquor water with the lower solid content. The rinsing water of a demister adopts the filter liquor water so as to decrease the process water quantity of a main system greatly.
Description
Technical field
The utility model relates to a kind of wet method fume desulfurizing system (WFGD) gypsum dehydration and lime stone slurry induction system of being used for, and belongs to the technical field of wet process of FGD device fabrication.
Background technology
Gypsum dehydration and lime stone slurry induction system adopt following technological process in known this field at present, gypsum slurries enters the gypsum cyclone after discharging desulfuration absorbing tower, gypsum cyclone underflow enters vacuum belt machine and filters, filtrate is gone slurrying or is directly returned tower, a gypsum cyclone overflow part is removed the waste-water vortex device, and a part is returned the absorption tower.There is following problem in this flow process: the one, and the gypsum discharge rate is handled load variations with the absorption tower and is changed, so at gypsum discharge pipe end a return duct must be set, makes excessive gypsum slurries return the absorption tower.Just flow can not be too little in order to prevent fouling from will to guarantee certain flow rate for discharge line.So all adopt big the backflow at present, guarantee that discharge pipe and return duct do not stop up, the flow of gypsum excavationg pump is far longer than the necessary gypsum delivery flow of busy hour desulphurization system.Investment and operating cost increase.The 2nd, tower is directly returned in the overflow of gypsum cyclone, is difficult for regulating absorbing tower liquid-level, especially multitower and share a cover gypsum dehydration device when boiler load changes, and when having tower load low, not moisturizing liquid level also can constantly rise.The 3rd, gypsum dehydration system can produce a large amount of filtrates, and the filtrate solid content is low, normally directly returns the absorption tower.And the absorption tower demisting device needs a large amount of flushing waters, and when the absorption tower load was low, often demister flushing water and gypsum dehydration system water had surpassed absorption tower institute water requirement, and this moment, absorbing tower liquid-level was difficult to control.
Summary of the invention
Technical problem: in order to overcome the problem that existing gypsum dehydration exists, the utility model provides calcium plaster dewater unit in a kind of wet method fume desulfurizing system.This device and method makes full use of the low filtrate water of solid content, reduces system's fouling, and makes the liquid level on absorption tower more easy to control.
Technical scheme: the gypsum dehydration device in the wet method fume desulfurizing system of the present utility model is made up of lime stone slurry case, limestone slurry liquid pump, lime stone slurry return valve, absorption tower, gypsum slurries excavationg pump, gypsum slurries excavationg pump return duct control valve, vacuum belt machine, filtrate water box, gypsum cyclone, spill box, waste-water vortex device; Wherein, the Lower Half of lime stone slurry case is connected with the Lower Half on absorption tower by the limestone slurry liquid pump, and pulping process water connects the first half of lime stone slurry case and is connected with the Lower Half on absorption tower by the lime stone slurry return valve; Top in the absorption tower is provided with demister, the import of gypsum slurries excavationg pump is connected with the Lower Half on absorption tower, gypsum slurries is discharged delivery side of pump and is connected a termination gypsum cyclone of gypsum slurries excavationg pump return duct control valve, the Lower Half on another termination absorption tower with the gypsum cyclone; The first half on absorption tower is connected with filtrate water box; The bottom of gypsum cyclone is connected with filtrate water box by vacuum belt machine, and the top of gypsum cyclone connects spill box, and the top of spill box also is connected with the Lower Half on absorption tower, and the bottom of spill box connects the waste-water vortex device.
Dehydration method is:
A. gypsum cyclone overflowing liquid major part is overflowed from spill box top and inserts gypsum slurries excavationg pump return duct control valve downstream, absorption tower,
B. gypsum cyclone overflowing liquid fraction is led to waste-water vortex device or directly discharge from the spill box bottom,
C. the fresh water (FW) supplementing water is entered filtrate water box, make the filtrate water solid content lower, the filtrate of filtrate water box is removed the day with fog flushing respectively and is back to gypsum slurries excavationg pump return duct control valve downstream, absorption tower through the filtrate water pump,
D. lime stone pulping process water 1 is inserted lime stone slurry return valve downstream.
Calcium plaster dehydration and the technological process of lime stone slurry induction system dewatering are after gypsum cyclone overflowing liquid major part is overflowed access absorption tower gypsum excavationg pump return duct control valve from overflowing liquid collection upper box part in the wet method fume desulfurizing system, fraction leads to waste-water vortex device or directly discharge from overflowing liquid collection lower box part, the fresh water (FW) moisturizing enters filtrate water box, make the filtrate water solid content lower, the filtrate water pump discharge is removed day with fog flushing and absorption tower gypsum excavationg pump return duct respectively.The absorption tower load is high more, and gypsum discharge slurries are many more, and the cyclone overflowing liquid is also many more, and absorption tower evaporation moisture content is many more, and it is big more that this moment, filtrate water box was discharged filtrate, just in time can satisfy demister washing water quantity height, the requirement that gypsum slurries return duct washing water quantity is many.After the gypsum slurries return duct adopts cyclone overflowing liquid and filtrate water flushing, be to prevent that the return duct fouling from keeping a bigger backflow unlike existing system when load is high.Can reduce the requirement of exerting oneself of calcium plaster liquid pump greatly, reduce investment outlay and operating cost.Equally, load when high when the absorption tower, the slurrying water consumption is big, phegma reduces, if after the slurrying water received lime stone slurry pump return duct control valve, also can reduce to guarantee enough washing water quantity scouring stone lime stone slush pump return ducts under the condition that lime stone slurry pumps power.The demister flushing water adopts filtrate water, has significantly reduced the non-adjustable technology water yield that saves land and enter main system, has increased adjusting flexibility and adjustable extent, the absorbing tower liquid-level when having guaranteed underload and the water balance of system of system process water.Simultaneously can replace out the rate of water make-up of lime stone slurrying to make it need not use corrosive filtrate water again, simplify the design of lime stone preparation system, reduce investment.
Beneficial effect: by improvement, reduced the exert oneself requirement of system, reduced investment and operating cost to the gypsum slurries emptying pump to gypsum dehydration system.For the system that the situation and the multitower of underload share gypsum dehydration, the gypsum dehydration system after the improvement can be good at regulating absorbing tower liquid-level, has solved the problem of systematic water balance, has effectively reduced the water consumption.Reduce a large amount of conveyance conduits, simplified system, dwindled the corrosion coverage, save anticorrosion expense.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is a general structure schematic diagram of the present utility model.
Have among the figure: pulping process water 1, lime stone slurry case 2, limestone slurry liquid pump 2.1, lime stone slurry return valve 2.2, absorption tower 3, demister 4, gypsum slurries excavationg pump 5, gypsum slurries excavationg pump return duct control valve 5.1, vacuum belt machine 6, filtrate water box 7, gypsum cyclone 8, gypsum cyclone spill box 8.1, fresh water (FW) supplementing water 9, waste-water vortex device 10.
The specific embodiment
Gypsum dehydration system of the present utility model, lime stone slurry induction system are made up of lime stone slurry case 2, limestone slurry liquid pump 2.1, lime stone slurry return valve 2.2, absorption tower 3, gypsum slurries excavationg pump 5, gypsum slurries excavationg pump return duct control valve 5.1, vacuum belt machine 6, filtrate water box 7, gypsum cyclone 8, spill box 8.1, waste-water vortex device 10; Wherein, the Lower Half of lime stone slurry case 2 is connected by the Lower Half of limestone slurry liquid pump 2.1 with absorption tower 3, and pulping process water 1 connects the first half of lime stone slurry case 2 and is connected by the Lower Half of lime stone slurry return valve 2.2 with absorption tower 3; Top in absorption tower 3 is provided with demister 4, the import of gypsum slurries excavationg pump 5 is connected with the Lower Half on absorption tower 3, the outlet of gypsum slurries excavationg pump 5 is connected with gypsum cyclone 8, one termination gypsum cyclone 8 of gypsum slurries excavationg pump return duct control valve 5.1, the Lower Half on another termination absorption tower 3; The first half on absorption tower 3 is connected with filtrate water box 7; The bottom of gypsum cyclone 8 is connected with filtrate water box 7 by vacuum belt machine 6, and the top of gypsum cyclone 8 connects spill box 8.1, and the top of spill box 8.1 also is connected with the Lower Half on absorption tower 3, and the bottom of spill box 8.1 connects waste-water vortex device 10.
Dehydration method is:
A. gypsum cyclone 8 overflowing liquid major parts are overflowed from spill box 8.1 tops and insert gypsum slurries excavationg pump return duct control valve 5.1 downstreams, absorption tower,
B. with gypsum cyclone 8 overflowing liquid fractions from spill box 8.1) portion leads to waste-water vortex device 10 or directly discharges,
C. fresh water (FW) supplementing water 9 is entered filtrate water box 7, make the filtrate water solid content lower, the filtrate of filtrate water box 7 is removed day with fog 4 flushings respectively and is back to absorption tower gypsum slurries excavationg pump 5 return duct control valves 5.1 downstreams through filtrate water pump 11,
D. lime stone pulping process water 1 is inserted lime stone slurry return valve 2.2 downstreams.
Claims (1)
1. the gypsum dehydration device in the wet method fume desulfurizing system is characterized in that this device is made up of lime stone slurry case (2), limestone slurry liquid pump (2.1), lime stone slurry return valve (2.2), absorption tower (3), gypsum slurries excavationg pump (5), gypsum slurries excavationg pump return duct control valve (5.1), vacuum belt machine (6), filtrate water box (7), gypsum cyclone (8), spill box (8.1), waste-water vortex device (10); Wherein, the Lower Half of lime stone slurry case (2) is connected by the Lower Half of limestone slurry liquid pump (2.1) with absorption tower (3), and pulping process water (1) connects the first half of lime stone slurry case (2) and is connected by the Lower Half of lime stone slurry return valve (2.2) with absorption tower (3); Top in absorption tower (3) is provided with demister (4), the import of gypsum slurries excavationg pump (5) is connected with the Lower Half of absorption tower (3), the outlet of gypsum slurries excavationg pump (5) is connected with gypsum cyclone (8), one termination gypsum cyclone (8) of gypsum slurries excavationg pump return duct control valve (5.1), the Lower Half on another termination absorption tower (3); The first half on absorption tower (3) is connected with filtrate water box (7); The bottom of gypsum cyclone (8) is connected with filtrate water box (7) by vacuum belt machine (6), the top of gypsum cyclone (8) connects spill box (8.1), the top of spill box (8.1) also is connected with the Lower Half of absorption tower (3), and the bottom of spill box (8.1) connects waste-water vortex device (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520074534 CN2813074Y (en) | 2005-08-16 | 2005-08-16 | Gypsum slurry dewatering device in wet-process flue gas desulfurizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520074534 CN2813074Y (en) | 2005-08-16 | 2005-08-16 | Gypsum slurry dewatering device in wet-process flue gas desulfurizing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2813074Y true CN2813074Y (en) | 2006-09-06 |
Family
ID=36948158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520074534 Expired - Fee Related CN2813074Y (en) | 2005-08-16 | 2005-08-16 | Gypsum slurry dewatering device in wet-process flue gas desulfurizing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2813074Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331572C (en) * | 2005-08-16 | 2007-08-15 | 孙克勤 | Gypsum pulp dewatering device and method for wetting smoke desulfurizing system |
| CN100486673C (en) * | 2007-06-06 | 2009-05-13 | 中电投远达环保工程有限公司 | Adsorption tower smoke directly ventilating technology |
| CN102228785A (en) * | 2011-06-30 | 2011-11-02 | 宝钢工程技术集团有限公司 | Method and system by using slurry as clapboard washing water |
| CN104906818A (en) * | 2015-06-08 | 2015-09-16 | 山东大学 | Slurry vacuum distillation system and process based on wet flue gas desulfurization |
| CN111187016A (en) * | 2020-01-15 | 2020-05-22 | 浙江天蓝环保技术股份有限公司 | System and process for preparing high-strength α -semi-hydrated gypsum from desulfurized gypsum and product thereof |
| CN113226530A (en) * | 2018-12-27 | 2021-08-06 | 三菱动力株式会社 | Fluid delivery device and method for modifying fluid delivery device |
-
2005
- 2005-08-16 CN CN 200520074534 patent/CN2813074Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331572C (en) * | 2005-08-16 | 2007-08-15 | 孙克勤 | Gypsum pulp dewatering device and method for wetting smoke desulfurizing system |
| CN100486673C (en) * | 2007-06-06 | 2009-05-13 | 中电投远达环保工程有限公司 | Adsorption tower smoke directly ventilating technology |
| CN102228785A (en) * | 2011-06-30 | 2011-11-02 | 宝钢工程技术集团有限公司 | Method and system by using slurry as clapboard washing water |
| CN102228785B (en) * | 2011-06-30 | 2013-09-04 | 宝钢工程技术集团有限公司 | Method and system by using slurry as clapboard washing water |
| CN104906818A (en) * | 2015-06-08 | 2015-09-16 | 山东大学 | Slurry vacuum distillation system and process based on wet flue gas desulfurization |
| CN104906818B (en) * | 2015-06-08 | 2017-05-17 | 山东大学 | Slurry vacuum distillation system and process based on wet flue gas desulfurization |
| CN113226530A (en) * | 2018-12-27 | 2021-08-06 | 三菱动力株式会社 | Fluid delivery device and method for modifying fluid delivery device |
| CN111187016A (en) * | 2020-01-15 | 2020-05-22 | 浙江天蓝环保技术股份有限公司 | System and process for preparing high-strength α -semi-hydrated gypsum from desulfurized gypsum and product thereof |
| CN111187016B (en) * | 2020-01-15 | 2022-04-29 | 浙江天蓝环保技术股份有限公司 | System and process for preparing high-strength alpha-semi-hydrated gypsum from desulfurized gypsum and product thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1331572C (en) | Gypsum pulp dewatering device and method for wetting smoke desulfurizing system | |
| CN2813074Y (en) | Gypsum slurry dewatering device in wet-process flue gas desulfurizing system | |
| CN200946298Y (en) | Equipment for repeatedly utilizing water | |
| CN1309456C (en) | Hopper type current-collecting device of flue-gas desulphurization system by shunting method or external inforced oxidizing process | |
| CN208482252U (en) | A kind of wet desulfurization system filtrate water recovery device | |
| CN204609935U (en) | A kind of overflow is from the tailings oar sand storehouse of process | |
| CN201157754Y (en) | Flue gas wet desulfurization gypsum dewatering equipment | |
| CN103910445A (en) | Desulfurization wastewater treatment device adopting efficient clarifier | |
| CN108946918A (en) | Sludge in Sewage Treatment biochemistry consumes abatement system and method | |
| CN211912949U (en) | Desulfurization waste water collecting and utilizing device | |
| CN211734054U (en) | Desulfurization waste water is used for high-efficient water treatment system that defroster washed | |
| CN208193756U (en) | A kind of super primary sedimentation tank of desulfurization wastewater | |
| CN210457812U (en) | Multistage flocculation sewage treatment system based on magnetic powder recovery and distribution device | |
| CN208328542U (en) | A kind of mthod of white water from paper making recovery system | |
| CN210448200U (en) | Circular overground coal water sedimentation tank capable of automatically discharging coal slime | |
| CN208448748U (en) | It is a kind of to adjust water balance device of slagging tap | |
| CN2644532Y (en) | Water-saving apparatus for household use | |
| CN211111182U (en) | Oil-water separating device | |
| CN203610039U (en) | Desulfurization waste water drainage device | |
| CN110217854A (en) | A kind of oily-water seperating equipment and separation method | |
| CN215442160U (en) | Gravity type valveless filter's high-order water tank | |
| CN205295016U (en) | Partly bury formula integration desulfurization wastewater treatment device | |
| CN107352701A (en) | A kind of high-ammonia-nitrogen sewage processing cycle pond and sewage-treatment plant and its handling process with circulatory pool | |
| CN204865113U (en) | Mud device is received to sewage | |
| CN2633969Y (en) | Cabinet small household waste water purifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |