CN107198952A - The recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system - Google Patents
The recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system Download PDFInfo
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- CN107198952A CN107198952A CN201710488318.2A CN201710488318A CN107198952A CN 107198952 A CN107198952 A CN 107198952A CN 201710488318 A CN201710488318 A CN 201710488318A CN 107198952 A CN107198952 A CN 107198952A
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- demister
- coal
- power plant
- water
- burning power
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 155
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 52
- 230000023556 desulfurization Effects 0.000 title claims abstract description 52
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 52
- 239000003595 mist Substances 0.000 title claims abstract description 26
- 238000004064 recycling Methods 0.000 title claims abstract description 20
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 36
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 30
- 239000002002 slurry Substances 0.000 claims abstract description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003546 flue gas Substances 0.000 claims abstract description 5
- 239000000498 cooling water Substances 0.000 claims description 16
- 230000003020 moisturizing effect Effects 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims description 3
- 235000019504 cigarettes Nutrition 0.000 claims 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000013014 water-saving technology Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system, including cyclic water tank, flush box and some prime demisters and some rear class demisters；Each prime demister and each rear class demister are set gradually along the direction that flue gas circulates, the collection water out of each rear class demister is connected with the water inlet of cyclic water tank, the delivery port of cyclic water tank is connected with the flushing water inlet of each prime demister, the delivery port of flush box is connected with the flushing water inlet of each rear class demister, and the collection water out of prime demister is connected with the slurry pool of desulfurizing tower in coal-burning power plant's wet desulfurization system；Each prime demister is located in coal-burning power plant's wet desulfurization system in the back-end ductwork of desulfurizing tower or in the desulfurizing tower of coal-burning power plant's wet desulfurization system；Rear class demister is located in coal-burning power plant's wet desulfurization system in the back-end ductwork of desulfurizing tower, and the system can realize the recycling of mist eliminator flushing water.
Description
Technical field
The invention belongs to water-saving technology field, it is related to a kind of time of mist eliminator flushing water in coal-burning power plant's wet desulfurization system
Receipts utilize system.
Background technology
As coal-burning power plant's wet desulfurization system minimum discharge is transformed, the water balance problem of its system becomes increasingly conspicuous, and it is led
It is that minimum discharge transformation generally adds demister configuration and favourable turn equipment to want reason, and mist eliminator flushing water (accounts for desulphurization system to enter
Water 70%), the increase of component cooling water (account for desulphurization system inflow 10%) consumption, and desulphurization system entrance flue gas temperature
Due to putting into operation for low low-level (stack-gas) economizer, the universal range of decrease is between 30~50 DEG C so that desulphurization system evaporation water consume is greatly decreased.Cause
This, cause increases and desulphurization system water loss is reduced into desulphurization system water, and water balance is difficult to ensure that.Recycling portion
Divide mist eliminator flushing water, reduce total washing water quantity, be desulphurization system water saving and the important measures of maintenance level weighing apparatus.
The content of the invention
It is an object of the invention to the shortcoming for overcoming above-mentioned prior art, there is provided a kind of coal-burning power plant's wet desulfurization system
The recycling system of middle mist eliminator flushing water, the system can realize the recycling of mist eliminator flushing water.
To reach the recovery profit of mist eliminator flushing water in above-mentioned purpose, coal-burning power plant's wet desulfurization system of the present invention
Include cyclic water tank, flush box and some prime demisters and some rear class demisters with system；
Each prime demister and each rear class demister are set gradually along the direction that flue gas circulates, the collection of each rear class demister
Water out is connected with the water inlet of cyclic water tank, and the delivery port of cyclic water tank is connected with the flushing water inlet of each prime demister
Logical, the delivery port of flush box is connected with the flushing water inlet of each rear class demister, the collection water out of prime demister and
The slurry pool of desulfurizing tower is connected in coal-burning power plant's wet desulfurization system；
Each prime demister is located in coal-burning power plant's wet desulfurization system in the back-end ductwork of desulfurizing tower or positioned at coal-fired electricity
In the desulfurizing tower of factory's wet desulfurization system；Rear class demister is located at the back-end ductwork of desulfurizing tower in coal-burning power plant's wet desulfurization system
In.
Flush box is connected by mist eliminator flushing water pump with the flushing water inlet of prime demister.
The collection water out of rear class demister is connected by the first collection water pipe with cyclic water tank, and first collects on water pipe
Provided with one-level piping filter, secondary canalization filter and flowmeter.
When each prime demister be located at coal-burning power plant's wet desulfurization system in desulfurizing tower back-end ductwork in, each prime demisting
The collection water out of device is connected by the second collection water pipe with the slurry pool of desulfurizing tower in coal-burning power plant's wet desulfurization system.
Cyclic water tank is connected by piping filter and water circulating pump with the flushing water inlet of prime demister.
Also include the jacking stirrer for the water in agitation cycle water tank, the density for detecting cyclic water tank reclaimed water
Densitometer and for cyclic water tank carry out moisturizing moisturizing pipeline.
Also include open type cooling water collecting pit, open type cooling water collecting pit is connected by open type cooling water pump with cyclic water tank
It is logical.
The quantity of rear class demister is 1-2 grades.
When each prime demister is located in coal-burning power plant's wet desulfurization system in the back-end ductwork of desulfurizing tower, prime demisting
The series of device is 1-2 grades；When in the desulfurizing tower that each prime demister is located at coal-burning power plant's wet desulfurization system, prime demister
Series be 2-3 grades.
The invention has the advantages that：
The recycling system of mist eliminator flushing water is specifically being grasped in coal-burning power plant's wet desulfurization system of the present invention
When making, the flushing water in cistern enters each prime demisting after rear class demister, cyclic water tank, prime demister successively
Device is located in coal-burning power plant's wet desulfurization system in the slurry pool of desulfurizing tower, so that flushing water rinses rear class demister and prime
Entered after demister in slurry pool, realize the recycling of flushing water, it is ensured that the water balance of desulphurization system, reduction enters de-
The water of sulphur system, simple in construction, practicality is extremely strong.
Further, the density of cyclic water tank reclaimed water is detected by densitometer, the monitoring to cyclic water tank reclaimed water is realized.
Further, cyclic water tank is connected by piping filter and water circulating pump with the flushing water inlet of prime demister
It is logical, prevent the bulky grain in cyclic water tank from entering in water circulating pump by piping filter.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment one in the present invention；
Fig. 2 is the structural representation of embodiment two in the present invention；
Fig. 3 is the structural representation of embodiment three in the present invention；
Fig. 4 is the structural representation of example IV in the present invention.
Wherein, 1 it is prime demister, 2 be rear class demister, 3 be the second collection water pipe, 4 be the first collection water pipe, 5 is
Cyclic water tank, 6 be flush box, 7 be water circulating pump, 8 be mist eliminator flushing water pump, 9 be open type cooling water collecting pit, 10 to open
Formula cooling water pump, 11 be one-level piping filter, 12 be secondary canalization filter, 13 be flowmeter, 14 be jacking stirrer,
15 it is densitometer, 16 is piping filter.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
The recycling system of mist eliminator flushing water includes circulation in coal-burning power plant's wet desulfurization system of the present invention
Water tank 5, flush box 6 and some prime demisters 1 and some rear class demisters 2；Each prime demister 1 and each rear class demister
2 set gradually along the direction that flue gas circulates, and the collection water out of each rear class demister 2 is connected with the water inlet of cyclic water tank 5,
The delivery port of cyclic water tank 5 is connected with the flushing water inlet of each prime demister 1, the delivery port of flush box 6 and each rear class
The flushing water inlet of demister 2 is connected, collection water out and the desulfurization in coal-burning power plant's wet desulfurization system of prime demister 1
The slurry pool of tower is connected；Each prime demister 1 be located at coal-burning power plant's wet desulfurization system in desulfurizing tower back-end ductwork in or
In the desulfurizing tower of coal-burning power plant's wet desulfurization system；Rear class demister 2 is located at desulfurization in coal-burning power plant's wet desulfurization system
In the back-end ductwork of tower.
Flush box 6 is connected by mist eliminator flushing water pump 8 with the flushing water inlet of prime demister 1；Rear class demisting
The collection water out of device 2 is connected by the first collection water pipe 4 with cyclic water tank 5, and first, which collects water pipe 4, is provided with one-level pipeline
Filter 11, secondary canalization filter 12 and flowmeter 13；Cyclic water tank 5 is by piping filter 16 and water circulating pump 7 with before
The flushing water inlet of level demister 1 is connected.Present invention additionally comprises the jacking stirrer for the water in agitation cycle water tank 5
14th, the filling pipe for the densitometer 15 of the density that detects the reclaimed water of cyclic water tank 5 and for carrying out moisturizing to cyclic water tank 5
Road；Present invention additionally comprises open type cooling water collecting pit 9, open type cooling water collecting pit 9 passes through open type cooling water pump 10 and recirculated water
Case 5 is connected.
When each prime demister 1 is located in coal-burning power plant's wet desulfurization system in the back-end ductwork of desulfurizing tower, each prime is removed
The collection water out of day with fog 1 is connected by the second collection water pipe 3 with the slurry pool of desulfurizing tower in coal-burning power plant's wet desulfurization system
It is logical.
The quantity of rear class demister 2 is 1-2 grades；Taken off when each prime demister 1 is located in coal-burning power plant's wet desulfurization system
When in the back-end ductwork of sulphur tower, the series of prime demister 1 is 1-2 grades；When each prime demister 1 is de- positioned at coal-burning power plant's wet method
When in the desulfurizing tower of sulphur system, the series of prime demister 1 is 2-3 grades.
The present invention specific work process be：
Flush box 6 as the flushing water of rear class demister 2 water source, mist eliminator flushing water pump 8 as flushing water power,
Periodic flushing rear class demister 2.
The droplet and its flushing water that rear class demister 2 is trapped converge into cyclic water tank 5 by the first collection water pipe 4, in order to
Prevent larger solid particle enter cyclic water tank 5 in, first collection water pipe 4 set gradually one-level piping filter 11, two grades
Piping filter 12 and flowmeter 13, pass through the record quantity of circulating water, and needing periodically to one-level filter pipeline in real time of flowmeter 13
Device 11 and secondary canalization filter 12 are cleaned, and prevent from blocking.Cyclic water tank 5 sets jacking stirrer 14, prevents from sinking
Product, the water quality situation of cyclic water tank 5 is monitored by densitometer 15, and make by the water in the extraction cyclic water tank 5 of water circulating pump 7
For the flushing water of prime demister 1, the water inlet of water circulating pump 7 sets piping filter 16, and the bulky grain of filter deposition is preceding
The droplet and its flushing water that level demister 1 is trapped are discharged into absorption tower stock tank.
The open type cooling water of the favourable turn equipment of desulphurization system is from flowing into open type cooling water collecting pit 9, and open type cooling water is received
Water in collection pond 9 will be delivered in cyclic water tank 5 by open type cooling water pump 10.
The present invention's is mainly characterized in that：Prime demister 1 removes the big major diameter drop of quality accounting, and residual mass is accounted for
Removed than few small diameter drops by rear class demister 2, so that drop and its flushing water that rear class demister 2 is intercepted are containing solid
Amount is relatively low, can be for recycling, for circulation flushing prime demister 1.
Embodiment one
With reference to Fig. 1, each prime demister 1 is located in coal-burning power plant's wet desulfurization system in the back-end ductwork of desulfurizing tower, preceding
The series of level demister 1 is 2 grades；The quantity of rear class demister 2 is 1 grade.
Embodiment two
With reference to Fig. 2, the quantity of rear class demister 2 is 2 grades；Each prime demister 1 is located at coal-burning power plant's wet desulfurization system
In the back-end ductwork of middle desulfurizing tower, the series of prime demister 1 is 1 grade.
Embodiment three
With reference to Fig. 3, each prime demister 1 is located in the desulfurizing tower of coal-burning power plant's wet desulfurization system, prime demister 1
Series is 2 grades, and the quantity of rear class demister 2 is 2 grades.
Example IV
In the desulfurizing tower for being located at coal-burning power plant's wet desulfurization system with reference to each prime demisters 1 of Fig. 4, prime demister 1
Series is 3 grades, and the quantity of rear class demister 2 is 1 grade.
Claims (9)
1. the recycling system of mist eliminator flushing water in a kind of coal-burning power plant's wet desulfurization system, it is characterised in that including following
Ring water tank (5), flush box (6) and some prime demisters (1) and some rear class demisters (2)；
Each prime demister (1) and each rear class demister (2) are set gradually along the direction that flue gas circulates, each rear class demister (2)
Collection water out be connected with the water inlet of cyclic water tank (5), the delivery port of cyclic water tank (5) and each prime demister (1)
Flushing water inlet be connected, the delivery port of flush box (6) is connected with the flushing water inlet of each rear class demister (2), preceding
The collection water out of level demister (1) is connected with the slurry pool of desulfurizing tower in coal-burning power plant's wet desulfurization system；
Each prime demister (1) is located in coal-burning power plant's wet desulfurization system in the back-end ductwork of desulfurizing tower or positioned at coal-burning power plant
In the desulfurizing tower of wet desulfurization system；Rear class demister (2) is located at the afterbody cigarette of desulfurizing tower in coal-burning power plant's wet desulfurization system
In road.
2. the recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system according to claim 1, its
It is characterised by, flush box (6) is connected by mist eliminator flushing water pump (8) with the flushing water inlet of prime demister (1).
3. the recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system according to claim 1, its
It is characterised by, the collection water out of rear class demister (2) is connected by the first collection water pipe (4) with cyclic water tank (5), first
Collect water pipe (4) and be provided with one-level piping filter (11), secondary canalization filter (12) and flowmeter (13).
4. the recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system according to claim 3, its
Be characterised by, when each prime demister (1) be located at coal-burning power plant's wet desulfurization system in desulfurizing tower back-end ductwork in, each prime
The collection water out of demister (1) passes through the second slurries for collecting water pipe (3) and desulfurizing tower in coal-burning power plant's wet desulfurization system
Pond is connected.
5. the recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system according to claim 1, its
It is characterised by, cyclic water tank (5) is entered by the flushing water of piping filter (16) and water circulating pump (7) and prime demister (1)
Mouth is connected.
6. the recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system according to claim 1, its
Be characterised by, in addition to jacking stirrer (14) for the water in agitation cycle water tank (5), for detecting cyclic water tank
(5) densitometer (15) of the density of reclaimed water and the moisturizing pipeline for carrying out moisturizing to cyclic water tank (5).
7. the recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system according to claim 1, its
Be characterised by, in addition to open type cooling water collecting pit (9), open type cooling water collecting pit (9) by open type cooling water pump (10) with
Cyclic water tank (5) is connected.
8. the recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system according to claim 1, its
It is characterised by, the quantity of rear class demister (2) is 1-2 grades.
9. the recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system according to claim 1, its
It is characterised by, when each prime demister (1) is located in coal-burning power plant's wet desulfurization system in the back-end ductwork of desulfurizing tower, prime
The series of demister (1) is 1-2 grades；When in the desulfurizing tower that each prime demister (1) is located at coal-burning power plant's wet desulfurization system,
The series of prime demister (1) is 2-3 grades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710488318.2A CN107198952A (en) | 2017-06-23 | 2017-06-23 | The recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710488318.2A CN107198952A (en) | 2017-06-23 | 2017-06-23 | The recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107198952A true CN107198952A (en) | 2017-09-26 |
Family
ID=59907012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710488318.2A Pending CN107198952A (en) | 2017-06-23 | 2017-06-23 | The recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system |
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| Country | Link |
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| CN (1) | CN107198952A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647147A (en) * | 2019-01-24 | 2019-04-19 | 华能国际电力股份有限公司 | Water optimization system and method for wet flue gas desulfurization device for efficient dust removal in thermal power plant |
| CN109806754A (en) * | 2017-11-21 | 2019-05-28 | 国电环境保护研究院有限公司 | A kind of desulfuration absorbing tower device |
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| CN201357045Y (en) * | 2008-12-31 | 2009-12-09 | 北京中大能环工程技术有限公司 | Desulfurization tower for ammonia crystallization in empty tower |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109806754A (en) * | 2017-11-21 | 2019-05-28 | 国电环境保护研究院有限公司 | A kind of desulfuration absorbing tower device |
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Application publication date: 20170926 |
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