CN211781184U

CN211781184U - Waste gas whitening system of wet dust collector

Info

Publication number: CN211781184U
Application number: CN201922145431.8U
Authority: CN
Inventors: 刘光双
Original assignee: Suzhou Liantao Environmental Protection Equipment Co ltd
Current assignee: Suzhou Liantao Environmental Protection Equipment Co ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-10-27
Anticipated expiration: 2029-12-04

Abstract

The utility model discloses a white system of waste gas of wet dust collector takes off relates to the waste gas and takes off white field, including desulfurization system, heat exchanger, condensation module, wet dust collector, electric heating module and auxiliary system, the desulfurization system include the desulfurizing tower auxiliary system includes cooling tower, spraying system, washes the purge system. The utility model relates to a wet dust collector's waste gas whitening system, the white cigarette is got rid of to the mode of taking the elder generation condensation to reheat, clean flue gas temperature cooling after the desulfurization earlier, moisture in the saturated wet flue gas of desorption, make its moisture content reduce, then promote the clean flue gas temperature after the dehydration, become dry flue gas emission to the saturated wet flue gas, can ensure to produce big white cigarette under very low ambient temperature, just the temperature is about 0 ℃, also can not basically have the white cigarette, perhaps white cigarette phenomenon alleviates greatly, can not produce dense cigarette phenomenon, prevent to cause visual pollution, certain application prospect is possessed.

Description

Waste gas whitening system of wet dust collector

Technical Field

The utility model relates to a waste gas takes off white field, specifically is a wet dust collector's waste gas takes off white system.

Background

When saturated wet flue gas discharged from a chimney is contacted with ambient air with lower temperature, in the process of cooling the flue gas, water vapor contained in the flue gas is supersaturated and condensed, and condensed water drops refract and scatter light, so that smoke plume presents white or gray, which is called wet smoke plume.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a wet dust collector's waste gas whitening system, flue before the desulfurizing tower entry, arrange one set of flue gas heat transfer system, newly-increased one set of flue gas condensing system in the desulfurizing tower, the flue gas gets into intensification heat transfer system and newly-increased one set of electric heating system auxiliary heating flue gas to 75 ℃ from wet electricity export, at last through chimney exhaust atmosphere, to the flue gas whitening, cool down, remove dust dehumidification, flue gas intensification in line, realize not basically having "big white cigarette".

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a white system of waste gas takes off of wet dust collector, includes desulfurization system, heat exchanger, condensation module, wet dust collector, electric heating module and auxiliary system, the desulfurization system include the desulfurizing tower auxiliary system includes cooling tower, spraying system, washes the purge system, all be provided with the pipeline between desulfurization system, heat exchanger, condensation module, wet dust collector, electric heating module and the auxiliary system, all through the pipe connection between desulfurization system, heat exchanger, condensation module, wet dust collector, electric heating module and the auxiliary system.

Preferably, the cooling tower provides cold water for the condensation module or the circulating heat exchanger, the temperature difference is designed to be reduced by 10 ℃, the spraying system is composed of a distribution pipe network and nozzles, the spraying system is made of FRP (fiber reinforced plastic), the nozzles are hollow cone nozzles, the material is made of silicon carbide material, the distance between the spraying components is determined according to the effective spraying track and the residence time of sprayed liquid drops, and the flushing and purging system is composed of a spraying pipe, nozzles, an adjusting valve and a pipeline.

Preferably, the design parameters of the condensation module are flue gas volume: 38500Nm3/h, the inlet temperature is 50-55 ℃, the flue gas cooling amplitude is 6-8 ℃, and the design parameters of the heat exchanger are as follows: flue gas amount: 38500Nm3/h, the inlet temperature is 45-48 ℃, the temperature rise amplitude of the flue gas is 15-20 ℃, and the design parameters of the electric heating module are that the flue gas volume: 38500Nm3/h, the inlet temperature is 65-70 ℃, and the temperature rise amplitude of the smoke is 10-15 ℃; the material is as follows: 304; power: 60kW 3-180 kW.

Preferably, one end of the electric heating module is provided with a flue, the minimum wall thickness of the flue is designed according to 4mm at least, certain corrosion allowance is considered, and the flow velocity of flue gas in the flue is not more than 15 m/s; the wet dust collector is of a vertical structure and comprises a shell, a precipitation electrode device, a corona electrode device, a gas distribution device, a spraying and flushing device, a positive pressure protection device and a constant-current high-voltage direct-current power supply, wherein the shell is made of vinyl ester glass fiber reinforced plastics, a lining carbon fiber is reinforced, and the spraying and flushing device is arranged at the upper part of the shell and consists of a pipeline, a pipe fitting and a nozzle; the gas distribution device is arranged at the lower part of the shell and is of a porous plate structure; adopts modified polypropylene or glass fiber reinforced plastic material.

Preferably, the exhaust gas de-whitening system comprises the following steps:

step one, after the heat exchange of the 110-plus-150 ℃ high-temperature flue gas is carried out by a heat exchanger, the flue gas cooled to 90-130 ℃ enters a desulfurization tower along a flue, the flue gas enters a condensation module, after the condensation, the flue gas is cooled to 45-48 ℃, and then the flue gas upwards passes through a wet dust collector;

step two, after wet-process electric dust removal is carried out on the flue gas at the temperature of 45-48 ℃ in a wet dust remover, the flue gas enters a heat exchanger along a pipeline to be heated, and the temperature of the flue gas is raised to 65-70 ℃;

and step three, finally, secondarily heating the flue gas to 75 ℃ through an electric heating module, and directly discharging the flue gas into the atmosphere.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to a wet dust collector's waste gas whitening system, the white cigarette is got rid of to the mode of taking the elder generation condensation to reheat, clean flue gas temperature cooling after the desulfurization earlier, moisture in the saturated wet flue gas of desorption, make its moisture content reduce, then promote the clean flue gas temperature after the dehydration, become dry flue gas emission to the saturated wet flue gas, can ensure to produce big white cigarette under very low ambient temperature, just the temperature is about 0 ℃, also can not basically have the white cigarette, perhaps white cigarette phenomenon alleviates greatly, can not produce dense cigarette phenomenon, prevent to cause visual pollution, certain application prospect is possessed.

Drawings

FIG. 1 is a flow chart of a system for removing white waste gas from a wet dust collector according to the present invention;

fig. 2 is a process description diagram of a waste gas whitening system of a wet dust collector of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a white system of waste gas takes off of wet dust collector, includes desulfurization system, heat exchanger, condensation module, wet dust collector, electric heating module and auxiliary system, the desulfurization system include the desulfurizing tower auxiliary system includes cooling tower, spraying system, washes the purge system, all be provided with the pipeline between desulfurization system, heat exchanger, condensation module, wet dust collector, electric heating module and the auxiliary system, all through the pipe connection between desulfurization system, heat exchanger, condensation module, wet dust collector, electric heating module and the auxiliary system.

The structure of the auxiliary system is shown, in the embodiment, the cooling tower provides cold water for the condensation module or the circulating heat exchanger, the temperature difference is designed to be reduced by 10 ℃, the spraying system is composed of a distribution pipe network and nozzles, the spraying system is made of FRP (fiber reinforced plastic), the nozzles are hollow cone nozzles, the material is made of silicon carbide material, the distance between spraying components is determined according to the effective spraying track and the residence time of sprayed liquid drops, and the flushing and purging system is composed of a spraying pipe, nozzles, an adjusting valve and a pipeline.

The design parameters of the condensation module, the heat exchanger and the electric heating module are expressed, in the embodiment, the design parameters of the condensation module are flue gas volume: 38500Nm3/h, the inlet temperature is 50-55 ℃, the flue gas cooling amplitude is 6-8 ℃, and the design parameters of the heat exchanger are as follows: flue gas amount: 38500Nm3/h, the inlet temperature is 45-48 ℃, the temperature rise amplitude of the flue gas is 15-20 ℃, and the design parameters of the electric heating module are that the flue gas volume: 38500Nm3/h, the inlet temperature is 65-70 ℃, and the temperature rise amplitude of the smoke is 10-15 ℃; the material is as follows: 304; power: 60kW 3-180 kW.

The design requirements of a flue and the structure of a wet dust collector are expressed, in the embodiment, the flue is arranged at one end of the electric heating module, the minimum wall thickness of the flue is at least designed according to 4mm, certain corrosion allowance is considered, and the flow velocity of flue gas in the flue is not more than 15 m/s; the wet dust collector is of a vertical structure and comprises a shell, a precipitation electrode device, a corona electrode device, a gas distribution device, a spraying and flushing device, a positive pressure protection device and a constant-current high-voltage direct-current power supply, wherein the shell is made of vinyl ester glass fiber reinforced plastics, a lining carbon fiber is reinforced, and the spraying and flushing device is arranged at the upper part of the shell and consists of a pipeline, a pipe fitting and a nozzle; the gas distribution device is arranged at the lower part of the shell and is of a porous plate structure; adopts modified polypropylene or glass fiber reinforced plastic material.

The main steps of the exhaust gas whitening system are expressed, and the method comprises the following steps:

step 1, after the heat exchange of the 110-plus-150 ℃ high-temperature flue gas is carried out by a heat exchanger, the flue gas cooled to 90-130 ℃ enters a desulfurization tower along a flue, the flue gas enters a condensation module, after the flue gas is condensed, the flue gas is cooled to 45-48 ℃, and then the flue gas upwards passes through a wet dust collector;

The utility model mainly comprises a desulfurization system, a heat exchanger, a condensation module, a wet dust collector, an electric heating module and an auxiliary system, wherein, the high-temperature flue gas with the temperature of 110-; after wet-process electric dust removal is carried out on flue gas at the temperature of 45-48 ℃ in a wet dust remover, the flue gas enters a heat exchanger along a pipeline to be heated, and the temperature of the flue gas is raised to 65-70 ℃; finally, the flue gas is secondarily heated to 75 ℃ through an electric heating module and directly discharged into the atmosphere; the utility model discloses take the mode of earlier condensation reheating to get rid of white cigarette, clean flue gas temperature cooling after the desulfurization earlier, moisture in the saturated wet flue gas of desorption, make its moisture content reduce, then promote the clean flue gas temperature after the dehydration, become dry flue gas emission to the saturated wet flue gas, can ensure to produce big white cigarette under very low ambient temperature, even if the temperature is about 0 ℃, also can not have white cigarette basically, perhaps white cigarette phenomenon alleviates greatly, can not produce dense cigarette phenomenon, prevent to cause visual pollution.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a white system of waste gas takes off of wet dust collector, includes desulfurization system, heat exchanger, condensation module, wet dust collector, electrical heating module and auxiliary system, its characterized in that: the desulfurization system comprises a desulfurization tower, the auxiliary system comprises a cooling tower, a spraying system and a flushing and purging system, pipelines are arranged between the desulfurization system, the heat exchanger, the condensing module, the wet dust collector, the electric heating module and the auxiliary system, and the desulfurization system, the heat exchanger, the condensing module, the wet dust collector, the electric heating module and the auxiliary system are all connected through pipelines.

2. The exhaust gas whitening system of a wet scrubber as recited in claim 1, wherein: the cooling tower provides cold water for the condensation module or the circulating heat exchanger, the temperature difference is designed according to 10 ℃ reduction, the spraying system is composed of a distribution pipe network and nozzles, the spraying system is made of FRP (fiber reinforced plastic), the nozzles are hollow cone nozzles, the materials are made of silicon carbide materials, the distance between the spraying components is determined according to the effective spraying track and the residence time of sprayed liquid drops, and the flushing and purging system is composed of a spraying pipe, nozzles, an adjusting valve and a pipeline.

3. The exhaust gas whitening system of a wet scrubber as recited in claim 1, wherein: the design parameters of the condensation module are that the flue gas volume: 38500Nm3/h, the inlet temperature is 50-55 ℃, the flue gas cooling amplitude is 6-8 ℃, and the design parameters of the heat exchanger are as follows: flue gas amount: 38500Nm3/h, the inlet temperature is 45-48 ℃, the temperature rise amplitude of the flue gas is 15-20 ℃, and the design parameters of the electric heating module are that the flue gas volume: 38500Nm3/h, the inlet temperature is 65-70 ℃, and the temperature rise amplitude of the smoke is 10-15 ℃; the material is as follows: 304; power: 60kW 3-180 kW.

4. The exhaust gas whitening system of a wet scrubber as recited in claim 1, wherein: a flue is arranged at one end of the electric heating module, the minimum wall thickness of the flue is designed according to 4mm at least, certain corrosion allowance is considered, and the flow velocity of flue gas in the flue is not suitable to exceed 15 m/s; the wet dust collector is of a vertical structure and comprises a shell, a precipitation electrode device, a corona electrode device, a gas distribution device, a spraying and flushing device, a positive pressure protection device and a constant-current high-voltage direct-current power supply, wherein the shell is made of vinyl ester glass fiber reinforced plastics, a lining carbon fiber is reinforced, and the spraying and flushing device is arranged at the upper part of the shell and consists of a pipeline, a pipe fitting and a nozzle; the gas distribution device is arranged at the lower part of the shell and is of a porous plate structure; adopts modified polypropylene or glass fiber reinforced plastic material.