CN210559581U - Alkali decrement waste water flue gas purification device - Google Patents
Alkali decrement waste water flue gas purification device Download PDFInfo
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- CN210559581U CN210559581U CN201921422143.6U CN201921422143U CN210559581U CN 210559581 U CN210559581 U CN 210559581U CN 201921422143 U CN201921422143 U CN 201921422143U CN 210559581 U CN210559581 U CN 210559581U
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Abstract
The utility model relates to a waste water treatment and flue gas desulfurization technical field are alkali decrement waste water gas cleaning device, its air-blown superfine grid filter, desulfurizing tower, chimney, desulfurization sludge impoundment, mud air stripping device and desulfurization pond, air-blown superfine grid filter is linked together with the desulfurization pond, desulfurization sludge impoundment has a mud pipeline with air stripping device intercommunication, mud air stripping device has into the mud pipeline with desulfurization pond intercommunication, desulfurization pond bottom is evenA hydraulic turbulent flow pipeline is communicated, a desulfurization liquid feeding pipeline is communicated with the desulfurization tower, a desulfurization liquid returning pipeline is communicated with the desulfurization tower and the desulfurization water tank, and a sewage discharge pipeline is communicated with the lower part of the desulfurization water tank. The utility model has reasonable and compact structure and convenient use, and utilizes the alkali in the waste water device of the viscose industry and the SO in the flue gas2Removal of SO by reaction2And the pH value of the desulfurized wastewater is reduced, so that the acid consumption for wastewater treatment is reduced, the pollution control cost is reduced, and the method has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.
Description
Technical Field
The utility model relates to a waste water treatment and flue gas desulfurization technical field are alkali decrement waste water gas cleaning device.
Background
The traditional desulfurization process can be divided into three major types, namely a wet method, a dry method and a semi-dry method according to the states of a desulfurizing agent and a desulfurization reaction product, wherein the wet flue gas desulfurization process is the process with the highest desulfurization efficiency at present and commonly adopts a limestone-gypsum method, a single alkali method, a double alkali method, an ammonia method and the like. The desulfurization tower mainly comprises a desulfurization tower, a flue for entering and exiting the tower and a desulfurization liquid circulating system, wherein alkaline desulfurization liquid flows through a circulating pump from top to bottom, is sprayed in multiple layers and converged to the bottom of the tower, flows back to a desulfurization water tank from the bottom of the tower, enters the circulation again, flue gas enters from the middle part of the desulfurization tower and is discharged from the upper part of the desulfurization tower from bottom to top, and the flue gas is contacted with the desulfurization liquid in the tower and absorbs sulfur dioxide in the flue gas through chemical reaction so as to achieve the aim of desulfurization.
According to different processes, alkaline substances such as limestone, sodium alkali, ammonia water and the like are generally selected as the desulfurizing agent, but the cost is required for any desulfurizing agent. NaOH is an excellent desulfurizing agent, with SO2The reaction speed is very fast, so the required liquid and gas are small, the desulfurization efficiency is high, and the power consumption is low; while the reaction product Na2SO4And Na2SO3All have good solubility, are beneficial to the circulation of the desulfurization solution, and have the desulfurization efficiency of 98.5 percent. The desulfurization effect is best, but the cost is highest.
A large amount of alkaline wastewater generated in the production process of the viscose industry is discharged after qualified treatment through a sewage treatment system, the pH value is adjusted to 6-9 in the treatment process, a sulfuric acid neutralization process is adopted, and a large amount of sulfuric acid is consumed in the wastewater treatment process and the salt content of water discharge is greatly increased.
The viscose fiber industry needs a large amount of steam to be matched with a coal-fired boiler due to the production characteristics of the viscose fiber industry. The alkaline desulfurizer required by boiler flue gas desulfurization and a large amount of alkaline wastewater generated in the production process of the viscose industry exist in the relation of supply and demand. However, the components in the waste water of the viscose industry are complex and are not suitable for being directly used as a desulfurizer, otherwise, impurities such as fiber suspended matters, hemicellulose, COD and the like in the waste water can be concentrated, separated out and deposited in a circulating system of a desulfurizing tower, so that a spraying system is blocked, and the system is paralyzed.
Disclosure of Invention
The utility model provides an alkali decrement waste water gas cleaning device has overcome above-mentioned prior art not enough, and it can effectively solve the waste water treatment that exists in the current viscose fiber trade and consume the acid quantity big, in the waste water impurity easily block up pipeline and boiler flue gas desulfurization effect poor and with high costs problem.
The technical scheme of the utility model is realized through following measure: an alkali-reduction wastewater flue gas purification device comprises an air-blowing type superfine grid mesh filter, a desulfurization tower, a chimney, a desulfurization sludge pool, a sludge air-lifting device and a desulfurization water pool, wherein an alkali-containing waste liquid pipeline is fixedly communicated with a top liquid inlet of the air-blowing type superfine grid mesh filter, a bottom liquid outlet of the air-blowing type superfine grid mesh filter is fixedly communicated with a top liquid inlet of the desulfurization water pool, a sludge outlet pipeline is fixedly communicated between a sludge inlet of the desulfurization sludge pool and a sludge outlet of the sludge air-lifting device, a sludge inlet pipeline is fixedly communicated between a sludge inlet of the sludge air-lifting device and a sludge outlet at the top of the desulfurization water pool, an inlet of the sludge inlet pipeline extends into the lower part of the desulfurization water pool, a bottom outlet of the desulfurization water pool is fixedly communicated with a hydraulic pipeline, one side of the bottom of the desulfurization water pool, except the bottom of the desulfurization water pool is close to the air-blowing, fixed mounting has the turbulent flow pump on the water conservancy turbulent flow pipeline, fixed mounting has the shower nozzle in proper order on the water conservancy turbulent flow dispersion pipeline, fixed intercommunication has the doctor solution to go up the tower pipeline between desulfurizing tank upper portion liquid outlet and the desulfurizing tower upper portion inlet, fixed intercommunication has the doctor solution to return the pond pipeline between desulfurizing tower lower part liquid outlet and the desulfurizing tank lower part inlet, the fixed intercommunication of desulfurizing tank lower part mud outlet has sewage pipes, fixed intercommunication has the desulfurization flue gas pipeline between desulfurizing tower upper portion gas outlet and the chimney lower part air inlet, the fixed intercommunication of desulfurizing tower lower part air inlet has the boiler to contain the sulfur flue gas pipeline.
The following are further optimization or/and improvement of the technical scheme of the utility model:
and a desulfurization circulating pump is fixedly arranged on the desulfurization liquid upper tower pipeline.
The desulfurizing tower is internally provided with a spiral solid conical spray head.
The liquid inlet of the spiral solid conical spray head is fixedly communicated with the liquid outlet of the desulfurizing liquid upper tower pipeline.
The air-blowing type superfine grid filter adopts a 50-mesh filter screen.
The utility model has reasonable and compact structure and convenient use, and utilizes the alkali in the waste water device of the viscose industry and the SO in the flue gas2Removal of SO by reaction2And the pH value of the desulfurized wastewater is reduced, so that the acid consumption for wastewater treatment is reduced, the pollution control cost is reduced, and the method has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.
Drawings
FIG. 1 is a schematic process flow diagram of the preferred embodiment of the present invention.
The codes in the figures are respectively: the device comprises a gas-blowing superfine grid filter 1, a desulfurization water tank 2, a sludge gas stripping device 3, a turbulent flow pump 4, a desulfurization tower 5, a chimney 6, a desulfurization circulating pump 7, a spiral solid conical spray head 8, an alkali-containing waste liquid pipeline 9, a sludge inlet pipeline 10, a sludge outlet pipeline 11, a hydraulic turbulent flow pipeline 12, a desulfurization liquid feeding tower pipeline 13, a desulfurization liquid returning tank pipeline 14, a sewage discharge pipeline 15, a desulfurization smoke pipeline 16, a boiler sulfur-containing smoke pipeline 17, a desulfurization sludge tank 18 and a hydraulic turbulent flow dispersion pipeline 19.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The invention will be further described with reference to the following examples and drawings:
as shown in the attached figure 1, the alkali-reduction wastewater flue gas purification device comprises an air-blowing type superfine grid filter 1, a desulfurization tower 5, a desulfurization circulating pump 7, a desulfurization sludge pond 18, a sludge air-lifting device 3 and a desulfurization water tank 2, wherein an alkali-containing waste liquid pipeline 9 is fixedly communicated with a liquid inlet at the top of the air-blowing type superfine grid filter 1, a liquid outlet at the bottom of the air-blowing type superfine grid filter 1 is fixedly communicated with a liquid inlet at the top of the desulfurization water tank 2, a sludge outlet pipeline 11 is fixedly communicated between a sludge inlet of the desulfurization sludge pond 18 and a sludge outlet of the sludge air-lifting device 3, a sludge inlet of the sludge air-lifting device 3 and a sludge outlet at the top of the desulfurization water tank 2 are fixedly communicated with each other, a sludge inlet pipeline 10 is fixedly communicated with each other, an inlet of the sludge inlet pipeline 10 extends into the lower part of the desulfurization water tank 2, a bottom outlet of, the other sides are provided with hydraulic turbulence dispersion pipelines 19 along the bottom, the outlet of the hydraulic turbulence pipeline 12 is fixedly communicated with the inlet of the hydraulic turbulence dispersion pipeline 19, a turbulence pump 4 is fixedly installed on the hydraulic turbulence pipeline 12, spray heads are sequentially and fixedly installed on the hydraulic turbulence dispersion pipelines 19, a desulfurizing liquid upper tower pipeline 13 is fixedly communicated between a liquid outlet at the upper part of the desulfurizing water tank 2 and a liquid inlet at the upper part of the desulfurizing tower 5, a desulfurizing liquid returning pipeline 14 is fixedly communicated between a liquid outlet at the lower part of the desulfurizing tower 5 and a liquid inlet at the lower part of the desulfurizing water tank 2, a sludge outlet at the lower part of the desulfurizing water tank 2 is fixedly communicated with a sewage discharge pipeline 15, a desulfurizing flue gas pipeline 16 is fixedly communicated between a gas outlet at the upper part of the desulfurizing tower 5 and a gas inlet at the lower part of the desulfurizing.
The utility model adopts the air-blowing type superfine grid filter 1 at the liquid inlet at the top of the desulfurization circulating water tank to filter out fiber suspended matters in the alkali-containing wastewater, thereby effectively avoiding the blockage of a flow passage; meanwhile, the bottom of the desulfurization water tank 2 is additionally provided with a hydraulic turbulence system, so that the deposition of various insoluble substances at the bottom of the tank is conveniently slowed down, and precipitates at the bottom of the circulating tank are timely discharged by a sludge gas stripping device 3; and SO2The gas is sprayed and degassed by the desulfurizing tower 5 to prevent SO2The gas is discharged disorderly after escaping, which causes environmental pollution.
The utility model discloses with initial SO2The concentration is 1500mg/Nm3The average emission concentration after desulfurization is 22mg/Nm3The desulfurization efficiency is 98.5 percent, can reach the ultra-low emission standard and completely meet the environmental protection requirement of a coal-fired power plant. On the aspect of economy, on one hand, the cost of a large amount of desulfurizer is saved, on the other hand, the cost of sulfuric acid for neutralizing alkaline wastewater is reduced, and the purposes of treating waste by waste and comprehensively utilizing the waste are achieved.
The alkali decrement wastewater flue gas purification device can be further optimized or/and improved according to actual needs:
as shown in the attached figure 1, a desulfurization circulating pump 7 is fixedly arranged on a desulfurization liquid upper tower pipeline 13.
As shown in the attached figure 1, a spiral solid conical spray head 8 is arranged in the desulfurizing tower 5. The spray system of the desulfurizing tower 5 adopts a special spiral solid conical spray head 8, which can ensure the even spray effect and effectively solve the problem that the common spray head is easy to block.
As shown in attached figure 1, a liquid inlet of a spiral solid conical spray head 8 is fixedly communicated with a liquid outlet of a desulfurizing liquid upper tower pipeline 13.
As shown in attached figure 1, the air-blowing type superfine grid filter 1 adopts a 50-mesh filter screen. The air-blowing type superfine grid filter 1 can effectively filter out fiber suspended matters in wastewater.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
The utility model discloses best embodiment's use: after the alkali-containing waste liquid enters the air-blowing type superfine grid filter 1 through an alkali-containing waste liquid pipeline 9 for filtration, the alkali-containing waste water enters the desulfurization water tank 2, a turbulent flow pump 4 on a hydraulic turbulent flow pipeline 12 is started, the alkali-containing waste water enters a hydraulic turbulent flow dispersion pipeline 19 through the hydraulic turbulent flow pipeline 12 and then is sprayed out by a spray head, insoluble substances at the bottom of the desulfurization water tank 2 are prevented from being deposited for a long time, and sediments at the lower part of the desulfurization water tank 2 are conveyed to a sludge gas stripping device 3 through a sludge inlet pipeline 10 and then are discharged through a; the alkali-containing wastewater in the desulfurization water tank 2 enters the desulfurization tower 5 through a desulfurization circulating pump 7 from a desulfurization liquid upper tower pipeline 13, is sprayed by a spiral solid conical spray head 8 and reversely contacts with the boiler sulfur-containing flue gas entering the bottom of the desulfurization tower 5 through a boiler sulfur-containing flue gas pipeline 17 to remove SO2The desulfurized flue gas after gas enters a desulfurization circulating pump 7 through a desulfurized flue gas pipeline 16 and is discharged, and alkali-containing wastewater and SO2Reaction of the gas to form Na2SO4And NaOH in the alkali-containing wastewater is consumed, the pH value is reduced, and the wastewater with the reduced pH value at the bottom of the desulfurizing tower 5 is returned to the desulfurizing water tank 2 through a desulfurizing liquid return tank pipeline 14 and discharged through a sewage discharge pipeline 15.
Claims (6)
1. An alkali-reduction wastewater flue gas purification device is characterized by comprising an air-blowing type superfine grid filter, a desulfurization tower, a chimney, a desulfurization sludge pool, a sludge air-lifting device and a desulfurization water pool, wherein an alkali-containing waste liquid pipeline is fixedly communicated with a liquid inlet at the top of the air-blowing type superfine grid filter, a liquid outlet at the bottom of the air-blowing type superfine grid filter is fixedly communicated with a liquid inlet at the top of the desulfurization water pool, a sludge outlet pipeline is fixedly communicated between a sludge inlet of the desulfurization sludge pool and a sludge outlet of the sludge air-lifting device, a sludge inlet pipeline is fixedly communicated between a sludge inlet of the sludge air-lifting device and a sludge outlet at the top of the desulfurization water pool, a sludge inlet pipeline inlet extends into the lower part of the desulfurization water pool, a hydraulic turbulence pipeline is fixedly communicated with an outlet at the bottom of the desulfurization water pool, the bottom of the desulfurization water pool is close to one side of the air-blowing type superfine grid filter, fixed mounting has the turbulent flow pump on the water conservancy turbulent flow pipeline, fixed mounting has the shower nozzle in proper order on the water conservancy turbulent flow dispersion pipeline, fixed intercommunication has the doctor solution to go up the tower pipeline between desulfurizing tank upper portion liquid outlet and the desulfurizing tower upper portion inlet, fixed intercommunication has the doctor solution to return the pond pipeline between desulfurizing tower lower part liquid outlet and the desulfurizing tank lower part inlet, the fixed intercommunication of desulfurizing tank lower part mud outlet has sewage pipes, fixed intercommunication has the desulfurization flue gas pipeline between desulfurizing tower upper portion gas outlet and the chimney lower part air inlet, the fixed intercommunication of desulfurizing tower lower part air inlet has the boiler to contain the sulfur flue gas pipeline.
2. The alkali-minimization wastewater flue gas purification device according to claim 1, wherein a desulfurization circulating pump is fixedly installed on the desulfurization solution upper tower pipeline.
3. The alkali-reduction wastewater flue gas purification device as claimed in claim 1 or 2, wherein a spiral solid conical spray head is installed in the desulfurization tower.
4. The alkali-minimization wastewater flue gas purification device according to claim 3, wherein a liquid inlet of the spiral solid conical spray head is fixedly communicated with a liquid outlet of the desulfurization liquid upper tower pipeline.
5. The alkali-reduction wastewater flue gas purification device as claimed in claim 1, 2 or 4, wherein the air-blown ultrafine grid filter adopts a 50-mesh screen.
6. The alkali-reduction wastewater flue gas purification device as claimed in claim 3, wherein the air-blown ultrafine grid filter adopts a 50-mesh screen.
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| CN201921422143.6U CN210559581U (en) | 2019-08-29 | 2019-08-29 | Alkali decrement waste water flue gas purification device |
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| CN201921422143.6U CN210559581U (en) | 2019-08-29 | 2019-08-29 | Alkali decrement waste water flue gas purification device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112044128A (en) * | 2020-07-22 | 2020-12-08 | 宁夏茂华活性炭有限公司 | A effluent disposal system for active carbon activation carbomorphism process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112044128A (en) * | 2020-07-22 | 2020-12-08 | 宁夏茂华活性炭有限公司 | A effluent disposal system for active carbon activation carbomorphism process |
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Address after: 841000 Xinier Park, Korla economic and Technological Development Zone, Bayingolin Mongolian Autonomous Prefecture, Xinjiang Uygur Autonomous Region Patentee after: Korla Zhongtai Textile Technology Co.,Ltd. Address before: 841000 Xinier Park, Korla economic and Technological Development Zone, Bayingolin Mongolian Autonomous Prefecture, Xinjiang Uygur Autonomous Region Patentee before: Xinjiang Zhongtai Textile Group Co.,Ltd. |