CN212820489U

CN212820489U - Handle fertile device of phosphorus compound tail gas with wet electrostatic precipitator's washing unit

Info

Publication number: CN212820489U
Application number: CN202021531843.1U
Authority: CN
Inventors: 胡庆桥; 赵金牛; 李�杰
Original assignee: Guizhou East China Engineering Co ltd
Current assignee: Guizhou East China Engineering Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-03-30
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a washing unit of wet electrostatic precipitator for treating phosphorus compound fertilizer device tail gas, which comprises a wet electrostatic precipitator, wherein the lower end and the upper end of the wet electrostatic precipitator are respectively provided with a tail gas inlet and a blow-off pipe, the upper end of the wet electrostatic precipitator is provided with a purified tail gas discharge pipe, the tail gas inlet is connected with the tail gas discharge pipe of the phosphorus compound fertilizer device, the blow-off pipe is connected with a sewage collection tank, the upper end of the wet electrostatic precipitator is provided with a supernatant liquid spraying inlet pipe, and the lower end of the wet electrostatic precipitator is provided with a lower supernatant liquid spraying inlet pipe; the utility model discloses can obviously improve the scale deposit condition of anode tube, improve equipment dust collection efficiency, under the circumstances that equipment does not cut off the power supply, realize online continuous cleaning, satisfy environmental protection real-time supervision's requirement.

Description

Handle fertile device of phosphorus compound tail gas with wet electrostatic precipitator's washing unit

Technical Field

The utility model relates to a handle fertile device of phosphorus tail gas of device and use wet electrostatic precipitator's washing unit belongs to electrostatic precipitator washing tool field.

Background

At present, the domestic anode tube wet electrostatic precipitator washing process comprises the following steps: when tail gas passes through an electric field of a wet electrostatic dust collector, more than 90% of particles are adsorbed on an anode tube, voltage is gradually reduced along with the increase of the covering thickness of the particles, dust collection efficiency is correspondingly reduced, and the particles on the anode tube need to be cleaned, so that equipment manufacturers research a washing scheme, 200-plus-300 m3/h spray water is used for washing the particles on the anode tube, and the high-voltage electric field in the equipment is short-circuited due to the fact that the washing water amount is large, so that the equipment needs to be powered off for washing; if the washing water quantity is reduced, the particles on the anode tube cannot be washed away in time, and the dust removal efficiency is influenced.

That is, there is a need for a washing device for a wet electrostatic precipitator, which can significantly improve the scaling of the anode tube, improve the dust removal efficiency of the device, realize on-line continuous cleaning under the condition of uninterrupted power supply of the device, and meet the requirements of environmental protection and real-time monitoring.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide a washing unit of a wet electrostatic precipitator for treating the tail gas of a phosphorus compound fertilizer device, which can obviously improve the scaling condition of an anode tube, improve the dust removal efficiency of equipment, realize on-line continuous cleaning under the condition that the equipment is not powered off, and meet the requirements of environmental protection and real-time monitoring; the defects of the prior art can be overcome.

The technical scheme of the utility model is that: the utility model provides a handle fertile device of phosphorus compound tail gas and use washing unit of wet electrostatic precipitator, it includes wet electrostatic precipitator, is equipped with tail gas entry and blow off pipe respectively in wet electrostatic precipitator's lower extreme and upper end, is equipped with the tail gas delivery pipe after purifying in wet electrostatic precipitator's upper end, tail gas entry and the fertile device of phosphorus compound's tail gas delivery pipe link to each other, the blow off pipe links to each other with the sewage collecting vat, is equipped with supernatant respectively at wet electrostatic precipitator's upper end and lower extreme and sprays the admission pipe and lower supernatant and spray the admission pipe.

The upper end of the wet electrostatic dust collector is also provided with a flushing pipe for maintenance and cleaning.

The upper end of the sewage collecting tank is provided with an overflow pipe, the overflow pipe is connected with a clear liquid tank, a water replenishing port and a clear liquid conveying pipe are arranged on the clear liquid tank, and the clear liquid conveying pipe is connected with a clear liquid spraying inlet pipe, a clear liquid spraying inlet pipe and a flushing pipe for maintenance and cleaning.

And a sewage discharge pipe connected with a sewage discharge pump is arranged at the bottom of the sewage collecting tank.

Compared with the prior art, the utility model discloses handle wet electrostatic precipitator's washing unit for phosphorus compound fertilizer device tail gas, upper end and lower extreme at wet electrostatic precipitator are equipped with supernatant respectively and spray into the pipe and lower supernatant spray into the pipe, such structure, through addding a set of supernatant spray into the pipe, make the tail gas of tail gas entry fully moist, cooperation equipment top supernatant spray into the pipe a little continuous flushing, make the particulate matter that adheres to on the anode tube smoothly erode to the sewage collecting vat by the water film, through dividing into twice a little sprays from top to bottom like this, can wash under the circumstances of not cutting off the power supply, obviously improve the scale deposit condition of anode tube, improve equipment dust collection efficiency, realize online continuous cleaning, satisfy the requirement of environmental protection real-time supervision; the upper end of the wet electrostatic dust collector is also provided with a flushing pipe for maintenance and cleaning, so that a large amount of cleaning can be conveniently carried out during maintenance.

The upper end of the sewage collecting tank is provided with an overflow pipe, the overflow pipe is connected with a clear liquid tank, the clear liquid tank is provided with a water replenishing port and a clear liquid conveying pipe, the clear liquid conveying pipe is connected with a supernatant liquid spraying inlet pipe, a lower clear liquid spraying inlet pipe and a flushing pipe for overhauling and cleaning, and thus the clear liquid can be circularly sprayed into the wet electric dust collector through the water replenishing port and the clear liquid conveying pipe.

The bottom of the sewage collecting tank is provided with a sewage discharge pipe connected with a sewage discharge pump, so that sprayed and washed sewage and vaporous condensed water can be discharged into the sewage collecting tank from a water outlet at the bottom of the wet electric dust collector, solid particles are settled in the sewage collecting tank, and slurry can be discharged and conveyed by the sewage discharge pump.

Drawings

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, in which:

fig. 1 is a schematic view of the connection structure of the present invention.

Fig. 2 is a schematic view of a prior art connection structure.

Wherein, the wet electrostatic precipitator 1; a tail gas inlet 2; a tail gas discharge pipe 3; a sewage collection tank 4; the supernatant is sprayed into the pipe 5; the lower clear liquid is sprayed into the pipe 6; a washing pipe 7 for maintenance and cleaning; a clear liquid tank 8; a water replenishing port 9; a dredge pump 10.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are for purposes of illustration only and are not intended to limit the scope of the present invention.

Embodiment 1. as shown in fig. 1, a washing device of a wet electrostatic precipitator for treating tail gas of a phosphorus compound fertilizer device comprises a wet electrostatic precipitator 1, wherein the lower end of the wet electrostatic precipitator 1 is provided with a tail gas inlet 2 and a sewage discharge pipe, and the upper end of the wet electrostatic precipitator 1 is provided with a purified tail gas discharge pipe 3 and a washing pipe 7 for maintenance and cleaning; the tail gas inlet 2 is connected with a tail gas discharge pipe 3 of the phosphorus compound fertilizer device, the blow-off pipe is connected with a sewage collecting tank 4, and the bottom of the sewage collecting tank 4 is provided with a blow-off pipe connected with a blow-off pump 10; the upper end and the lower end of the wet electrostatic precipitator 1 are respectively provided with a supernatant fluid spraying inlet pipe 5 and a lower supernatant fluid spraying inlet pipe 6.

An overflow pipe is arranged at the upper end of the sewage collecting tank 4 and is connected with a clear liquid tank 8, a water replenishing port 9 and a clear liquid conveying pipe are arranged on the clear liquid tank 8, and the clear liquid conveying pipe is connected with a supernatant liquid spraying inlet pipe 5, a lower clear liquid spraying inlet pipe 6 and a flushing pipe 7 for overhauling and cleaning.

During the use, tail gas is from tail gas entry 2 during entering into wet electrostatic precipitator 1, and the particulate matter concentration this moment is the biggest, if can add continuous spraying in anode tube lower part region, make to form the one deck water film on the anode tube wall, the particulate matter that attaches to on the anode tube just can drop to sewage collecting vat 4 under the dual function of water film and self gravity more easily.

Considering that when a large amount of spray is sprayed from the top of the device, water columns are easily formed in the lower air chamber, and electric field discharge short circuit is caused, therefore, the spray amount at the top is properly reduced, the spray pressure at the top is improved, the water film amount of the anode tube is increased, and the flushing effect is improved.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a handle fertile device of phosphorus compound tail gas and use wet electrostatic precipitator's washing unit, it includes wet electrostatic precipitator (1), is equipped with tail gas entry (2), blow off pipe and tail gas discharge pipe (3) after purifying on wet electrostatic precipitator (1), and tail gas entry (2) link to each other with the tail gas discharge pipe (3) of fertile device of phosphorus compound, and the blow off pipe links to each other characterized in that with sewage collecting vat (4): the upper end and the lower end of the wet electrostatic precipitator (1) are respectively provided with a supernatant fluid spraying inlet pipe (5) and a lower supernatant fluid spraying inlet pipe (6).

2. The washing device of the wet electrostatic precipitator for treating the tail gas of the phosphorus compound fertilizer device as claimed in claim 1, wherein: the upper end of the wet electrostatic dust collector (1) is also provided with a flushing pipe (7) for maintenance and cleaning.

3. The washing device of the wet electrostatic precipitator for treating the tail gas of the phosphorus compound fertilizer device as claimed in claim 2, wherein: the upper end of the sewage collecting tank (4) is provided with an overflow pipe, the overflow pipe is connected with a clear liquid tank (8), a water replenishing port (9) and a clear liquid conveying pipe are arranged on the clear liquid tank (8), and the clear liquid conveying pipe is connected with a supernatant liquid spraying inlet pipe (5), a lower clear liquid spraying inlet pipe (6) and a flushing pipe (7) for overhauling and cleaning.

4. The washing device of the wet electrostatic precipitator for treating the tail gas of the phosphorus compound fertilizer device as claimed in claim 1, wherein: a sewage discharge pipe connected with a sewage discharge pump (10) is arranged at the bottom of the sewage collecting tank (4).