CN212348163U

CN212348163U - Environmental protection device for chemical production waste gas treatment

Info

Publication number: CN212348163U
Application number: CN202020259742.7U
Authority: CN
Inventors: 周玉健
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2021-01-15
Anticipated expiration: 2030-03-05

Abstract

The utility model relates to an environmental protection device for treating waste gas in chemical production, which comprises an electrostatic dust collector, an acid-base neutralization energy converter and a photocatalytic decomposer which are arranged in sequence, wherein a waste gas inlet pipe is arranged at the inlet of the electrostatic dust collector, and an exhaust tail pipe is arranged at the outlet of the photocatalytic decomposer; the electrostatic dust collector comprises a dust collection cylinder, a high-voltage electrode and a filter plate, wherein an outlet of the dust collection cylinder is connected with an inlet of an acid-base neutralization energy converter through a first flue gas pipeline; the acid-base neutralization energy converter comprises an acid-base judging instrument, an acid-base material box, an alkali material box and a reaction material box, wherein a heat exchange tube is arranged outside the reaction material box, and the acid-base judging instrument is arranged on the heat exchange tube at the inlet of the reaction material box; the outlet of the reaction material box is connected with the inlet of the photocatalytic decomposer through a second flue gas pipeline. The environment-friendly device can treat various chemical waste gases in a grading manner, and has a good purification effect; the heat emitted by the neutralizing gas is recycled, the electrostatic dust collection efficiency is improved, the energy is saved, the environment is protected, and the waste gas treatment cost is reduced.

Description

Environmental protection device for chemical production waste gas treatment

Technical Field

The utility model belongs to the technical field of the environmental protection equipment, concretely relates to environmental protection device for chemical production exhaust-gas treatment.

Background

In particular, when the attention degree of people on environmental protection is continuously improved, how to improve the waste gas treatment capacity and treatment level of chemical enterprises is inevitable to social development and also inevitable requirements of people on the development of the chemical enterprises.

The chemical waste gas generally refers to gas which is rich in heat energy and is not friendly to the environment and is generated in the chemical production process, and specifically comprises suspended solid particles, acid-alkaline gas small molecules, toxic gas molecules and the like. At present, the one-step spraying adsorption treatment device adopted in most enterprises cannot completely purify waste gas with complex components, so that the treated waste gas still causes serious pollution to air, and meanwhile, an adsorbent (such as activated carbon) used by the device causes secondary pollution. From the perspective of cost, the existing waste gas treatment technology often needs a large amount of electric energy, water energy and purifying agents, which results in waste of energy and resources and increase of treatment cost.

Therefore, an integrated device capable of energy-saving, environment-friendly and treating various chemical waste gases in a grading manner is urgently needed.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to overcome the defects, the utility model provides an environmental protection device for treating waste gas in chemical production, which can treat a plurality of chemical waste gas in a grading way, remove solid particle suspended matters, neutralizing gas and decompose toxic gas, and has good purification effect; the heat emitted by the neutralizing gas is recycled, the electrostatic dust collection efficiency is improved, the energy is saved, the environment is protected, and the waste gas treatment cost is reduced.

The utility model provides a technical scheme that its technical problem adopted as follows: an environment-friendly device for treating chemical production waste gas comprises an electrostatic dust collector, an acid-base neutralization energy converter and a photocatalytic decomposer which are sequentially arranged, wherein a waste gas inlet pipe is arranged at an inlet of the electrostatic dust collector, and an exhaust tail pipe is arranged at an outlet of the photocatalytic decomposer; the electrostatic dust collector comprises a dust collection cylinder, a high-voltage electrode and a filter plate, wherein the high-voltage electrode and the filter plate are arranged inside the dust collection cylinder, and an outlet of the dust collection cylinder is connected with an inlet of an acid-base neutralization energy converter through a first flue gas pipeline; the acid-base neutralization energy converter comprises an acid-base judging instrument, an acid liquid feed box, an alkali liquid feed box and a reaction feed box, wherein a heat exchange tube is arranged outside the reaction feed box, the acid liquid feed box and the alkali liquid feed box are arranged above the reaction feed box, acid liquid or alkali liquid in the acid liquid feed box and the alkali liquid feed box enters the reaction feed box after being opened through valves, and the acid-base judging instrument is arranged on the heat exchange tube at the inlet of the reaction feed box; the first flue gas pipeline is connected with the outlet of the dust removing cylinder and the inlet of the reaction material box; the outlet of the reaction material box is connected with the inlet of the photocatalytic decomposer through a second flue gas pipeline, and the photocatalytic decomposer is a UV photocatalytic decomposer.

Furthermore, a plurality of beating hammers are arranged on the side wall of the electrostatic dust collector, beating parts of the beating hammers are in contact with the filter plate, the beating hammers are driven by a driving motor, and the driving motor is arranged outside the dust collection cylinder; an ash bucket is arranged below the filter plate.

Furthermore, a filter screen is arranged at the inlet of the electrostatic dust collector.

Furthermore, a heat insulation layer is arranged on the outer side of the reaction material box, and the heat exchange tube is connected with the dust removing cylinder and the reaction material box.

Furthermore, the heat-insulating layer is made of polystyrene foam or polyurethane foam.

Furthermore, a gas online monitor is arranged at the outlet of the photocatalytic decomposer, a three-way valve and a third flue gas pipeline are arranged at the joint of the photocatalytic decomposer and the exhaust tail pipe, and the other end of the third flue gas pipeline is communicated with the inlet of the electrostatic dust collector.

The utility model has the advantages that:

1. the device treats the solid particle suspended matters, the neutralized gases and the decomposed toxic gases remained in the waste gases in a grading manner through the electrostatic dust collector, the acid-base neutralization energy converter and the photocatalytic decomposer, can treat various gases in a grading manner, and has a wide application range; the sedimentation of suspended solid particles in the waste gas can be accelerated by electrostatic dust removal, and the dust removal effect is good; the acid-base neutralization energy converter can recycle heat emitted during the neutralization reaction of the waste gas and provide the heat for electrostatic dust collection, so that the electrostatic dust collection effect is further improved, and the energy-saving and environment-friendly effects are achieved; the photocatalytic decomposer adopts the photocatalytic principle to convert toxic gas molecules into carbon dioxide and water, avoids the adsorption of toxic substances by adopting an active adsorbent in the traditional process, effectively prevents secondary pollution, is energy-saving and environment-friendly, and reduces the waste gas treatment cost.

2. The filter screen pretreats the waste gas entering the environment-friendly device, so that large solid particle substances are prevented from entering the environment-friendly device to influence the grading treatment effect of the device, and the service life of the device is prolonged; the rapping hammer can regularly clean dust adsorbed on the filter plate and clean the dust into the dust hopper, so that the service time of the filter plate is prolonged, and the maintenance cost is reduced; the heat preservation that sets up can neutralize the reaction heat loss, improves the collection and the utilization of heat to the heat exchange tube.

3. The online detector can judge whether the chemical production waste gas after the grading treatment reaches the emission standard, and if the gas does not reach the emission standard, the unqualified waste gas enters the environment-friendly device again through the third flue gas pipeline for treatment, so that the environment is protected.

Drawings

The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.

FIG. 1 is a schematic structural view of the present invention;

wherein: the device comprises a waste gas inlet pipe 1, an electrostatic dust collector 2, a dust removing cylinder 21, a high-voltage electrode 22, a filter plate 23, a knocking hammer 24, a driving motor 25, an ash bucket 26, a filter screen 27, an acid-base neutralization energy converter 3, an acid-base judging instrument 31, an acid-base material box 32, an alkali liquid material box 33, a reaction material box 34, a heat exchange pipe 35, a heat insulation layer 36, a photocatalytic decomposer 4, an exhaust tail pipe 5, a first flue gas pipeline 61, a second flue gas pipeline 62, a third flue gas pipeline 63, a three-way valve 64 and an online gas monitor 7.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, the environment-friendly device for treating the chemical production waste gas comprises an electrostatic dust collector 2, an acid-base neutralization energy converter 3 and a photocatalytic decomposer 4 which are sequentially arranged, wherein a waste gas inlet pipe 1 is arranged at an inlet of the electrostatic dust collector 2, and an exhaust tail pipe 5 is arranged at an outlet of the photocatalytic decomposer 4; the electrostatic dust collector 2 comprises a dust collection cylinder 21, a high-voltage electrode 22 and a filter plate 23, a filter screen 27 is further arranged at an inlet of the electrostatic dust collector 2, the high-voltage electrode 22 and the filter plate 23 are arranged inside the dust collection cylinder 21, a plurality of beating hammers 24 are arranged on the side wall of the electrostatic dust collector 2, hammering parts of the beating hammers 24 are in contact with the filter plate 23, the beating hammers 24 are driven by a driving motor 25, and the driving motor 25 is arranged outside the dust collection cylinder 21; an ash hopper 26 is arranged below the filter plate 23, and the outlet of the dust removing cylinder 21 is connected with the inlet of the acid-base neutralization energy converter 3 through a first flue gas pipeline 61; the acid-base neutralization energy converter 3 comprises an acid-base judging instrument 31, an acid liquid feed box 32, an alkali liquid feed box 33 and a reaction feed box 34, wherein a heat exchange tube 35 is arranged outside the reaction feed box 34, the acid liquid feed box 32 and the alkali liquid feed box 33 are arranged above the reaction feed box 34, acid liquid or alkali liquid in the acid liquid feed box 32 and the alkali liquid feed box 33 enters the reaction feed box 34 after being opened through a valve, a heat insulation layer 36 is arranged outside the reaction feed box 34, the heat exchange tube 35 is connected with the dedusting cylinder 21 and the reaction feed box 34, the heat insulation layer 36 is made of polystyrene foam, and the acid-base judging instrument 31 is arranged on the heat exchange tube 35 at the inlet of the; the first flue gas pipeline 61 is connected with the outlet of the dust removing cylinder 21 and the inlet of the reaction material box 34; the outlet of the reaction material box 34 is connected with the inlet of the photocatalytic decomposer 4 through a second flue gas pipeline 62, the photocatalytic decomposer 4 is a UV photocatalytic decomposer, the outlet of the photocatalytic decomposer 4 is provided with an on-line gas monitor 7, the connecting part of the photocatalytic decomposer 4 and the exhaust tail pipe 5 is provided with a three-way valve 64 and a third flue gas pipeline 63, and the other end of the third flue gas pipeline 63 is communicated with the inlet of the electrostatic dust collector 2.

The environment-friendly device treats the solid particle suspended matters, the neutralized gases and the decomposed toxic gases remained in the waste gases in a grading way through the electrostatic dust collector, the acid-base neutralization energy converter and the photocatalytic decomposer, can treat various gases in a grading way, and has wide application range; the sedimentation of suspended solid particles in the waste gas can be accelerated by electrostatic dust removal, and the dust removal effect is good; the acid-base neutralization energy converter can recycle heat emitted during the neutralization reaction of the waste gas and provide the heat for electrostatic dust collection, so that the electrostatic dust collection effect is further improved, and the energy-saving and environment-friendly effects are achieved; the photocatalytic decomposer adopts the photocatalytic principle to convert toxic gas molecules into carbon dioxide and water, avoids the adsorption of toxic substances by adopting an active adsorbent in the traditional process, effectively prevents secondary pollution, is energy-saving and environment-friendly, and reduces the waste gas treatment cost.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a chemical production is environment-friendly device for exhaust-gas treatment which characterized in that: the device comprises an electrostatic dust collector (2), an acid-base neutralization energy converter (3) and a photocatalytic decomposer (4) which are sequentially arranged, wherein a waste gas inlet pipe (1) is arranged at an inlet of the electrostatic dust collector (2), and an exhaust tail pipe (5) is arranged at an outlet of the photocatalytic decomposer (4); the electrostatic dust collector (2) comprises a dust collection cylinder (21), a high-voltage electrode (22) and a filter plate (23), the high-voltage electrode (22) and the filter plate (23) are arranged inside the dust collection cylinder (21), and an outlet of the dust collection cylinder (21) is connected with an inlet of the acid-base neutralization energy converter (3) through a first flue gas pipeline (61); the acid-base neutralization energy converter (3) comprises an acid-base judging instrument (31), an acid liquid feed box (32), an alkali liquid feed box (33) and a reaction feed box (34), wherein a heat exchange tube (35) is arranged on the outer side of the reaction feed box (34), the acid liquid feed box (32) and the alkali liquid feed box (33) are arranged above the reaction feed box (34), acid liquid or alkali liquid in the acid liquid feed box (32) and the alkali liquid feed box (33) enters the reaction feed box (34) after being opened through a valve, and the acid-base judging instrument (31) is arranged on the heat exchange tube (35) at the inlet of the reaction feed box (34); the first flue gas pipeline (61) is connected with the outlet of the dust removing cylinder (21) and the inlet of the reaction material box (34); the outlet of the reaction bin (34) is connected with the inlet of the photocatalytic decomposer (4) through a second flue gas pipeline (62), and the photocatalytic decomposer (4) is a UV photocatalytic decomposer.

2. The environmental protection device for treating the chemical production waste gas according to claim 1, wherein: the side wall of the electrostatic dust collector (2) is provided with a plurality of beating hammers (24), the beating parts of the beating hammers (24) are in contact with the filter plate (23), the beating hammers (24) are driven by a driving motor (25), and the driving motor (25) is arranged outside the dust removing cylinder (21); an ash bucket (26) is arranged below the filter plate (23).

3. The environmental protection device for treating the chemical production waste gas according to claim 1, wherein: and a filter screen (27) is also arranged at the inlet of the electrostatic dust collector (2).

4. The environmental protection device for treating the chemical production waste gas according to claim 1, wherein: the outer side of the reaction box (34) is provided with a heat insulation layer (36), and the heat exchange tube (35) is connected with the dust removal cylinder (21) and the reaction box (34).

5. The environmental protection device for treating waste gas from chemical production according to claim 4, wherein: the heat-insulating layer (36) is made of polystyrene foam or polyurethane foam.

6. The environmental protection device for treating the chemical production waste gas according to claim 1, wherein: the outlet of the photocatalytic decomposer (4) is provided with a gas on-line monitor (7), the joint of the photocatalytic decomposer (4) and the tail pipe (5) is provided with a three-way valve (64) and a third flue gas pipeline (63), and the other end of the third flue gas pipeline (63) is communicated with the inlet of the electrostatic dust collector (2).