CN208911786U - Limestone-gypsum Wet Flue Gas Desulfurization Process system - Google Patents
Limestone-gypsum Wet Flue Gas Desulfurization Process system Download PDFInfo
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- CN208911786U CN208911786U CN201821474881.0U CN201821474881U CN208911786U CN 208911786 U CN208911786 U CN 208911786U CN 201821474881 U CN201821474881 U CN 201821474881U CN 208911786 U CN208911786 U CN 208911786U
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- connect
- absorption tower
- flue gas
- limestone
- smoke
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Abstract
Limestone-gypsum Wet Flue Gas Desulfurization Process system.70 °C are reduced when the flue gas mean temperature discharged in traditional flue gas desulphurization system is than non-desulfurization, since sour dew condensation phenomenon occurs in the reduction of flue-gas temperature, cause that low-temperature corrosion occurs inside chimney.The utility model composition includes Limestone silo (1), Limestone silo is connect with ball mill (2), ball mill is connect with limestone slurry liquid case (3), limestone slurry liquid case is connect by limestone slurry liquid pump (4) with the bottom of absorption tower (5), the middle part of pipeline and absorption tower with oxidation fan (6) connects, technique water lines (20) are connect with the middle part on absorption tower, one end of circulation line with absorption tower circulating pump (7) and the lower part on absorption tower connect, the other end is connect with the spray equipment in the top of absorption tower, demister (8) are provided with above spray equipment, it is connect at the top of absorption tower with rotary flue gas-smoke re-heater (9).The utility model is applied to Limestone-gypsum Wet Flue Gas Desulfurization Process system.
Description
Technical field:
The utility model relates to a kind of Limestone-gypsum Wet Flue Gas Desulfurization Process systems.
Background technique:
70 °C or so are reduced when the flue gas mean temperature discharged in the traditional flue gas desulphurization system of power plant is than non-desulfurization, due to
There is sour dew condensation phenomenon in the reduction of flue-gas temperature, causes the problem of low-temperature corrosion occurs inside chimney, brings corrosion to chimney.
The trace that can see acid solution at the venthole set and flow out out of hole is stayed in chimney, some is in chimney in top area discovery
Fire resisting brickwork joint leakiness is served as a contrast, serious gas leakage, inner concrete is completely loose, and fine sand, stone, cement slurry are separated from each other, and surface is equal
There are sulfate yellow-white covering, reinforcing bar heavy corrosion.Chimney sour corrosion was not only serious but also universal, the flue-gas temperature of many chimneys
Lower than the acid dew-point temperature of flue gas, thus inner wall of stack has acid condensate liquid, and concentration is up to 50% or so.Barrel concrete
It is corroded to some extent, actual average intensity is lower than design grade 50% or so, causes in this way to the safe operation of power plant very big
It influences.
Summary of the invention:
The purpose of the utility model is to provide a kind of Limestone-gypsum Wet Flue Gas Desulfurization Process systems, improve emergence rate, not accidentally agriculture
When.
Above-mentioned purpose is realized by following technical scheme:
A kind of Limestone-gypsum Wet Flue Gas Desulfurization Process system, composition includes: Limestone silo, the Limestone silo and ball milling
Machine connection, the ball mill are connect with limestone slurry liquid case, and the limestone slurry liquid case is by limestone slurry liquid pump and inhales
Receive the bottom connection of tower, the middle part connection of pipeline and absorption tower with oxidation fan, the middle part of technique water lines and absorption tower
Connection, one end of the circulation line with absorption tower circulating pump and the lower part on absorption tower connect, in the other end and absorption tower top
Spray equipment connection, be provided with demister above the spray equipment, at the top of the absorption tower with rotary flue gas-cigarette
The connection of gas reheater, the rotary flue gas-smoke re-heater are connect with chimney by smoke-exhaust pipeline, the smoke-exhaust pipeline
On outlet damper is installed, boiler smoke pipeline is connect with booster fan, and inlet baffle, institute are equipped on the boiler pipe
The booster fan stated is connect with the rotary flue gas-smoke re-heater, the rotary flue gas-smoke re-heater it is defeated
The connection of the middle part on flue gas pipeline and absorption tower, the boiler smoke pipeline and the smoke-exhaust pipeline are connected by bypass conduit
It connects, by-pass damper is installed in the bypass conduit, the lower part on absorption tower and level-one cyclone pass through gypsum slurries discharge pump
Connection, the lower part of the level-one cyclone are connect with gypsum dehydration machine, and the gypsum dehydration machine lower part is connect with filtrate box,
The level-one cyclone apex is connect with second cyclone, is connect at the top of the second cyclone with waste discharge water pipe, described
Second cyclone lower part connect with the filtrate box, the filtrate box by filtrate pump respectively with the bottom on absorption tower,
The limestone slurry liquid case connection.
The utility model has the beneficial effects that
The utility model makees desulfurizing agent with lime stone slurry, to S0 in absorption tower2Flue gas spray washing, and to absorption tower
Slurries in blast air, pressure makes CaS03It is oxidized to CaS 〇4(gypsum is formed after crystallization), the byproduct of desulfurization are gypsum.Together
When blast air and generate more uniform slurries, to reach 90% or more desulfurization degree, and easily controllable fouling and blocking.
The applicable coal range of the utility model is wide, desulfuration efficiency is high, absorbent utilization rate high (can be greater than 90%), equipment
Running rate is high (up to 90% or more).
The utility model heats the desulfurization fume of discharge by drawing boiler smoke, specifically uses rotary flue gas-
Smoke re-heater.Rotary flue gas-smoke re-heater is layer adjacent to the position of chimney, passes through the boiler smoke pair of higher temperature
Desulfurization fume is sufficiently exchanged heat, and improves the exhaust temperature of desulfurization fume, while boiler smoke is also into further in recovery tower
It utilizes, so that the temperature of desulfurization fume is close to or up to the acid dew-point temperature of flue gas.
Detailed description of the invention:
Attached drawing 1 is the structural schematic diagram of the utility model.In figure, 1 is Limestone silo, and 2 be ball mill, and 3 be limestone slurry
Liquid case, 4 be limestone slurry liquid pump, and 5 be absorption tower, and 6 be oxidation fan, and 7 be absorption tower circulating pump, and 8 be demister, and 9 be revolution
Formula flue gas-smoke re-heater, 10 be outlet damper, and 11 be booster fan, and 12 be inlet baffle, and 13 be by-pass damper, and 14 be one
Grade cyclone, 15 be gypsum slurries discharge pump, and 16 be gypsum dehydration machine, and 17 be second cyclone, and 18 be filtrate box, and 19 be filtrate
Pump, 20 be technique water lines, and 21 be chimney.
Specific embodiment:
Embodiment 1:
A kind of Limestone-gypsum Wet Flue Gas Desulfurization Process system, composition includes: Limestone silo, the Limestone silo and ball milling
Machine connection, the ball mill are connect with limestone slurry liquid case, and the limestone slurry liquid case is by limestone slurry liquid pump and inhales
Receive the bottom connection of tower, the middle part connection of pipeline and absorption tower with oxidation fan, the middle part of technique water lines and absorption tower
Connection, one end of the circulation line with absorption tower circulating pump and the lower part on absorption tower connect, in the other end and absorption tower top
Spray equipment connection, be provided with demister above the spray equipment, at the top of the absorption tower with rotary flue gas-cigarette
The connection of gas reheater, the rotary flue gas-smoke re-heater are connect with chimney by smoke-exhaust pipeline, the smoke-exhaust pipeline
On outlet damper is installed, boiler smoke pipeline is connect with booster fan, and inlet baffle, institute are equipped on the boiler pipe
The booster fan stated is connect with the rotary flue gas-smoke re-heater, the rotary flue gas-smoke re-heater it is defeated
The connection of the middle part on flue gas pipeline and absorption tower, the boiler smoke pipeline and the smoke-exhaust pipeline are connected by bypass conduit
It connects, by-pass damper is installed in the bypass conduit, the lower part on absorption tower and level-one cyclone pass through gypsum slurries discharge pump
Connection, the lower part of the level-one cyclone are connect with gypsum dehydration machine, and the gypsum dehydration machine lower part is connect with filtrate box,
The level-one cyclone apex is connect with second cyclone, is connect at the top of the second cyclone with waste discharge water pipe, described
Second cyclone lower part connect with the filtrate box, the filtrate box by filtrate pump respectively with the bottom on absorption tower,
The limestone slurry liquid case connection.
Claims (1)
1. a kind of Limestone-gypsum Wet Flue Gas Desulfurization Process system, composition includes: Limestone silo, it is characterized in that: the Limestone silo
It is connect with ball mill, the ball mill is connect with limestone slurry liquid case, and the limestone slurry liquid case passes through lime stone slurry
Pump is connect with the bottom on absorption tower, the middle part connection of pipeline and absorption tower with oxidation fan, technique water lines and absorption tower
Middle part connection, the lower part on one end of the circulation line with absorption tower circulating pump and absorption tower connects, the other end and absorption tower
Spray equipment connection in top, is provided with demister above the spray equipment, at the top of the absorption tower with it is rotary
Flue gas-smoke re-heater connection, the rotary flue gas-smoke re-heater is connect with chimney by smoke-exhaust pipeline, described
Outlet damper is installed on smoke-exhaust pipeline, boiler smoke pipeline is connect with booster fan, be equipped on the boiler pipe into
Mouth baffle, the booster fan are connect with the rotary flue gas-smoke re-heater, the rotary flue gas-flue gas
The defeated flue gas pipeline of reheater and the middle part on absorption tower connect, and the boiler smoke pipeline and the smoke-exhaust pipeline pass through side
Road piping connection, by-pass damper is equipped in the bypass conduit, and the lower part on absorption tower and level-one cyclone pass through calcium plaster
The connection of liquid discharge pump, the lower part of the level-one cyclone are connect with gypsum dehydration machine, the gypsum dehydration machine lower part and filter
Liquid case connection, the level-one cyclone apex are connect with second cyclone, the second cyclone top and waste discharge water pipe
Connection, the second cyclone lower part connect with the filtrate box, the filtrate box pass through filtrate pump respectively with absorption
The bottom of tower, the limestone slurry liquid case connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821474881.0U CN208911786U (en) | 2018-09-10 | 2018-09-10 | Limestone-gypsum Wet Flue Gas Desulfurization Process system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821474881.0U CN208911786U (en) | 2018-09-10 | 2018-09-10 | Limestone-gypsum Wet Flue Gas Desulfurization Process system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208911786U true CN208911786U (en) | 2019-05-31 |
Family
ID=66703798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821474881.0U Expired - Fee Related CN208911786U (en) | 2018-09-10 | 2018-09-10 | Limestone-gypsum Wet Flue Gas Desulfurization Process system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208911786U (en) |
-
2018
- 2018-09-10 CN CN201821474881.0U patent/CN208911786U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190531 Termination date: 20200910 |