CN219091641U - Device for rapidly controlling SO2 emission concentration - Google Patents
Device for rapidly controlling SO2 emission concentration Download PDFInfo
- Publication number
- CN219091641U CN219091641U CN202223191663.5U CN202223191663U CN219091641U CN 219091641 U CN219091641 U CN 219091641U CN 202223191663 U CN202223191663 U CN 202223191663U CN 219091641 U CN219091641 U CN 219091641U
- Authority
- CN
- China
- Prior art keywords
- slurry
- pipeline
- absorption tower
- supply
- limestone
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a device for rapidly controlling SO2 emission concentration. At present, the slurry circulating pump of the absorption tower conveys slurry to the spraying layer, the downward limestone slurry drops sprayed by the spraying layer and the flue gas flowing from bottom to top undergo an absorption chemical reaction, SO that the slurry circulating time is longer, and the SO2 concentration cannot be controlled rapidly. An apparatus for rapidly controlling the concentration of SO2 emissions, comprising: the middle parts of the desulfurization absorption tower (1) and the desulfurization absorption tower are provided with a spraying layer (2), the slurry in the slurry pond is pressurized by a slurry circulating pump (4) and conveyed to the spraying layer through a pipeline, and the pipeline between the outlet of the slurry circulating pump and the spraying layer is the slurry supply pipeline (8); the slurry tank is internally provided with a slurry PH meter (3), fresh limestone slurry is pumped up by a limestone slurry pump (5) and then is sent into the slurry tank of the absorption tower through a pipeline, and the pipeline is provided with a slurry supply absorption tower regulating valve (6). The device is used for rapidly controlling the SO2 emission concentration.
Description
Technical Field
The utility model relates to a device for rapidly controlling SO2 emission concentration.
Background
The existing industrial boiler mainly adopts a wet limestone desulfurization method, in order to achieve the purposes of accurately controlling SO2 emission concentration and saving limestone consumption, the limestone slurry supplementing amount is accurately controlled based on the SO2 actual emission concentration and referring to the pH value of slurry in a slurry tank, the purpose of accurately controlling the SO2 emission concentration is realized to a certain extent, but the problem that the limestone slurry newly supplemented into a desulfurization tower needs to be mixed and dissolved with old slurry in the slurry tank, is pressurized and conveyed to a spraying layer through a slurry circulating pump and then reacts with flue gas, the whole circulating flow is relatively long, the problem of relatively lagging SO2 emission concentration is controlled, the slurry is oversupplied, the limestone consumption is increased, even the risk of exceeding SO2 emission concentration is increased, particularly, the requirement of accurately controlling the SO2 emission concentration is stronger when enterprises are in order to reduce fuel cost, improve sulfur content of coal entering a furnace and simultaneously can not realize environmental protection and superemission.
Disclosure of Invention
The utility model aims to provide a device for rapidly controlling SO2 emission concentration, which effectively solves the problems of relatively long slurry circulation flow, relatively lag in controlling SO2 emission concentration, excessive slurry supply, excessive SO2 emission concentration and the like in wet limestone desulfurization.
The above object is achieved by the following technical scheme:
an apparatus for rapidly controlling the concentration of SO2 emissions, comprising: the desulfurization absorption tower is internally provided with a spraying layer and a slurry pool, the bottom of the desulfurization absorption tower is provided with the slurry pool, the middle part of the desulfurization absorption tower is provided with the spraying layer, slurry in the slurry pool is boosted by a slurry circulating pump and enters the spraying layer through a slurry supply pipeline, limestone slurry drops sprayed downwards by the spraying layer and flue gas flowing from bottom to top after entering the absorption tower are subjected to chemical reaction and then return to the slurry pool, and a PH meter is arranged in the slurry pool for monitoring the PH value of the slurry.
The slurry tank is connected with the spraying layer through a slurry supply pipeline, and the slurry supply pipeline is connected with a slurry supplementing pipeline through a connecting pipeline;
one end of the connecting pipeline is connected with a slurry supply pipeline between the outlet of each slurry circulating pump and the spraying layer, the other end of the connecting pipeline is connected with a slurry supplementing pipeline between the limestone slurry outlet main pipe and the slurry supply absorption tower regulating valve, and a slurry direct-supply circulating pump outlet pipeline control valve is arranged on the connecting pipeline;
the slurry supplementing pipeline is respectively connected with a limestone slurry pump and a slurry supply absorption tower regulating valve;
the slurry supply pipeline is provided with a slurry circulating pump.
The device for rapidly controlling the SO2 emission concentration is characterized in that a CEMS device is arranged at the outlet of the desulfurization absorption tower. Fresh limestone slurry is pumped by a limestone slurry pump and is sent into a slurry tank of an absorption tower through a slurry supplementing pipeline, an adjusting valve is arranged on the slurry supplementing pipeline, and the pH value of the fresh slurry is referenced to control the supplementing amount of the fresh slurry.
The utility model has the beneficial effects that:
1. according to the device for rapidly controlling the SO2 emission concentration, the connecting pipeline is additionally arranged between the slurry supply pipeline and the slurry supplementing pipeline of the desulfurization absorption tower, fresh supplemented limestone slurry directly enters the spraying layer for spraying and then reacts with flue gas, SO that the slurry circulation process is shortened, and the rapid and precise control of the SO2 emission concentration is realized.
2. The utility model has the advantages of very low reconstruction cost, simple construction, no additional occupied space and simple operation. When the SO2 emission concentration is higher, the fresh supplemented limestone slurry directly enters the spraying layer to react with the flue gas after being sprayed, SO that the SO2 emission concentration can be reduced rapidly, the risks of excessive slurry supply and environmental protection emission caused by long slurry circulation flow are avoided, the running number of slurry circulation pumps can be reduced, and a certain energy-saving effect is achieved. Can be widely applied to industrial enterprises for wet limestone desulfurization.
Drawings
Fig. 1 is a schematic diagram of the structure of the present utility model.
In the figure: 1. a desulfurizing absorption tower; 2. spraying a layer; 3. a PH meter; 4. a slurry circulation pump; 5. limestone slurry pump; 6. the slurry is supplied to an absorption tower regulating valve; 7. slurry direct supply circulating pump outlet pipeline control valve; 8. a slurry supply pipeline; 9. a slurry supplementing pipeline; 10. a communication pipeline; 11. CEMS device.
Detailed Description
Examples. As shown in fig. 1, a device for rapidly controlling the discharge concentration of SO2, the desulfurization absorption tower 1 is a main facility and structure for wet limestone desulfurization; the bottom of the desulfurization absorption tower 1 is provided with a slurry pool, the middle part of the desulfurization absorption tower is provided with a spraying layer 2, slurry in the slurry pool is boosted by a slurry circulating pump 4 and conveyed to the spraying layer 2 through a pipeline, and a pipeline between an outlet of the slurry circulating pump 4 and the spraying layer 2 is a slurry supply pipeline 8; the slurry PH meter 3 is arranged in the slurry tank to monitor the PH of the slurry; fresh limestone slurry is pumped up by a limestone slurry pump 5 and then is sent into a slurry tank of an absorption tower through a pipeline, a slurry supply absorption tower regulating valve 6 is arranged on the pipeline, and a pipeline between an outlet of the limestone slurry pump 5 and the slurry supply absorption tower regulating valve 6 is a slurry supplementing pipeline 9; the slurry is supplied to an absorption tower regulating valve 6, and the fresh limestone slurry feeding amount is controlled by referring to the pH value of the slurry; one end of the connecting pipeline 10 is connected with a slurry supply pipeline 8 between the outlet of each slurry circulating pump and the spraying layer, the other end of the connecting pipeline is connected with a slurry supplementing pipeline 9 between a limestone slurry pump outlet main pipe and a slurry supply absorption tower regulating valve, and a slurry direct supply circulating pump outlet pipeline control valve 7 is arranged on the connecting pipeline 10; the slurry direct supply circulating pump outlet pipeline control valve 7 plays a role in controlling fresh limestone slurry to enter the spraying layer through the slurry supply pipeline; fresh limestone slurry can enter a slurry pond at the bottom of the desulfurization absorption tower through a slurry supplementing pipeline 9 after being boosted by a limestone slurry pump 5, and can also enter a slurry supplying pipeline 8 through a connecting pipeline 10 to react with flue gas through spraying layer injection and then enter the slurry pond; the CEMS device 11 is arranged at the outlet of the desulfurization absorption tower, and continuously monitors the concentration of SO2 in the discharged flue gas.
Example 2:
the device for rapidly controlling the SO2 emission concentration has the following operation flow:
step one, before operation, a limestone slurry pump 5 operates, and the opening of a slurry supply absorption tower regulating valve 6 is regulated according to the pH value displayed by a pH instrument 3 in a slurry pool of a desulfurization absorption tower 1 and the SO2 concentration monitored by a CEMS device 11, SO as to regulate the fresh limestone slurry amount fed into the desulfurization absorption tower through a slurry feeding pipeline 9;
step two, determining a slurry circulating pump 4 mode of the corresponding operation of the desulfurization absorption tower 1;
step three, when the SO2 concentration in the flue gas at the inlet of the desulfurization absorption tower is increased or the flue gas amount is increased, SO that the SO2 concentration in the flue gas at the outlet of the desulfurization absorption tower is increased, when the CEMS device 11 monitors that the SO2 concentration is increased to 30mg/Nm & lt-35 & gtm & lt/m & gt, the slurry supply absorption tower regulating valve 6 is closed, the slurry direct supply circulating pump outlet pipeline control valve 7 corresponding to the slurry circulating pump 4 is started to enable fresh limestone slurry to directly enter the slurry supply pipeline 8 through the connecting pipeline 10, and then react with SOX compounds in the flue gas after being sprayed through the spraying layer 2, SO that the SO2 concentration in the flue gas at the outlet of the desulfurization absorption tower is quickly inhibited from further increasing;
step four, when the CEMS device monitors that the SO2 concentration is reduced to below 20mg/Nm, opening a slurry supply absorption tower regulating valve 6, and closing a slurry direct supply circulating pump outlet pipeline control valve 7 which is opened before;
step five, continuously adjusting the opening of an adjusting valve 6 of the slurry feeding absorption tower according to the pH value displayed by a pH meter 3 in a slurry pool of the desulfurization absorption tower 1 and the SO2 concentration monitored by a CEMS device 11, and adjusting the fresh limestone slurry amount fed into the desulfurization absorption tower through a slurry feeding pipeline 9; judging whether the operation number of the slurry circulating pump 4 is required to be increased according to the SO2 concentration value and the flue gas amount in the flue gas at the inlet of the desulfurization absorption tower, the fresh limestone slurry amount fed into the desulfurization absorption tower through the slurry feeding pipeline 9 and other parameters;
the above steps are repeated in sequence according to the increase of SO2 concentration monitored by the CEMS device.
Claims (3)
1. An apparatus for rapidly controlling the concentration of SO2 emissions, comprising: the desulfurization absorption tower, the desulfurization absorption tower in have layer and thick liquid pond of spraying, thick liquid pond with spray the layer and pass through and supply thick liquid pipeline connection, characterized by: the slurry supply pipeline is connected with the slurry supplementing pipeline through a connecting pipeline; one end of the connecting pipeline is connected with a slurry supply pipeline between the outlet of each slurry circulating pump and the spraying layer, the other end of the connecting pipeline is connected with a slurry supplementing pipeline between the limestone slurry outlet main pipe and the slurry supply absorption tower regulating valve, and a slurry direct-supply circulating pump outlet pipeline control valve is arranged on the connecting pipeline; the slurry supplementing pipeline is respectively connected with a limestone slurry pump and a slurry supply absorption tower regulating valve; the slurry supply pipeline is provided with a slurry circulating pump.
2. The apparatus for rapid control of SO2 emission concentration according to claim 1, wherein: and a CEMS device is arranged at the outlet of the desulfurization absorption tower.
3. The apparatus for rapid control of SO2 emission concentration according to claim 1, wherein: and a PH meter is arranged in the slurry pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223191663.5U CN219091641U (en) | 2022-11-30 | 2022-11-30 | Device for rapidly controlling SO2 emission concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223191663.5U CN219091641U (en) | 2022-11-30 | 2022-11-30 | Device for rapidly controlling SO2 emission concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219091641U true CN219091641U (en) | 2023-05-30 |
Family
ID=86428783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223191663.5U Active CN219091641U (en) | 2022-11-30 | 2022-11-30 | Device for rapidly controlling SO2 emission concentration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219091641U (en) |
-
2022
- 2022-11-30 CN CN202223191663.5U patent/CN219091641U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107511056B (en) | Water quality regulation and control method for limestone-gypsum wet desulphurization system | |
| CN107224862A (en) | It is a kind of to carry out low concentration SO using fuzzy alkali adding method2The device and method of flue gas desulfurization | |
| CN100493679C (en) | Method of controlling fume speed inside desulfurizing absorption tower | |
| CN102061206A (en) | Pressure reduction gas desulfurization method | |
| CN107096371B (en) | Wide-load-adjustable limestone slurry supply system and adjusting method | |
| CN113617196B (en) | Flue gas desulfurization experiment simulation device | |
| CN219091641U (en) | Device for rapidly controlling SO2 emission concentration | |
| CN213160199U (en) | Closed-loop control's desulfurization system | |
| CN208526280U (en) | Wet desulphurization oxidized input air Two-way Feedback regulation device | |
| CN112604489A (en) | Wet flue gas desulfurization device capable of adjusting operation parameters according to variable quantity | |
| CN211487158U (en) | High-efficiency grading composite desulfurizing tower with control system | |
| CN212440787U (en) | Cement kiln flue gas desulfurization system | |
| CN214764463U (en) | Multi-parameter coupling wet desulphurization intelligent regulation and control system | |
| CN216361286U (en) | External hanging type desulfurization closed loop optimization control system | |
| CN210131519U (en) | Automatic dosing system for carbon black flue gas desulfurization | |
| CN206924617U (en) | A kind of double slurry pool circulating desulfurization devices | |
| CN209451614U (en) | A kind of cement kiln desulphurization system | |
| CN209646232U (en) | Flue gas dechlorination-desulfurization wastewater zero-emission control system | |
| CN216935466U (en) | Desulfurizing agent supplies thick liquid device | |
| CN215463269U (en) | Desulfurization absorption tower supplies thick liquid system | |
| CN202569934U (en) | Alkali adding system used for dynamic wave device | |
| CN111068500A (en) | Circulating fluidized bed flue gas desulfurization system | |
| CN220802633U (en) | Flue gas desulfurization system | |
| CN206881494U (en) | A kind of lime stone slurry supply system of wide Load Regulation | |
| CN212651622U (en) | Ammonia desulphurization device for preventing ammonia from escaping |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |