CN212017286U

CN212017286U - Waste gas purification device

Info

Publication number: CN212017286U
Application number: CN202020291284.5U
Authority: CN
Inventors: 杨小凤
Original assignee: Hefei Ailina Environmental Protection Technology Co ltd
Current assignee: Hefei Ailina Environmental Protection Technology Co ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-11-27
Anticipated expiration: 2030-03-11

Abstract

The utility model relates to a waste gas purification device, including dry-type filter and adsorption bed, be connected through first ooff valve between dry-type filter and the adsorption bed, adsorption bed gas outlet one end is connected with the spark arrester of arranging catalytic combustion bed inside in through the desorption fan, catalytic combustion bed inner wall one side fixedly connected with zeolite molecular sieve, the benefit air-cooler that is connected with the adsorption bed is installed to catalytic combustion bed gas outlet one side, the one last second ooff valve of adsorption bed is connected with the chimney through system's fan, be equipped with the water conservancy diversion ring rather than the looks adaptation on the chimney inner wall, the water conservancy diversion ring passes through bolt and nut subassembly and chimney realization fixed connection. Has the advantages that: the utility model relates to an advanced principle, it is unique with the material, the stable performance, easy operation, safe and reliable, no secondary pollution, the low resistance is hanged down, high adsorption rate, not spontaneous combustion etc. is used under the extremely big wind volume low concentration that is suitable for.

Description

Waste gas purification device

Technical Field

The utility model relates to a waste gas treatment equipment technical field, concretely relates to exhaust gas purification device.

Background

Atmospheric pollution is one of the most prominent environmental problems in the world today, the pollutants mainly come from industrial waste gas, the types of the generated pollutants are different due to different production processes of the industrial waste gas, different pollutant types are classified according to chemical properties and mainly classified into the following types, namely organic waste gas, inorganic waste gas and other waste gas, and the treatment processes for the organic waste gas at the present stage mainly include: 1 isolation method, 2 combustion method, 3 absorption method, 4 condensation method, 5 ion photo catalytic oxidation method, 6 adsorption method, 7 zeolite molecular sieve adsorption-concentration-catalytic pyrolysis method, but all have corresponding disadvantages, such as low treatment efficiency, instability, low purification efficiency, difficulty in meeting the relevant environmental protection requirements, secondary pollution, requirements on the dust content of organic waste gas, the need of a dust removal device additionally arranged, and simultaneously, the better purification treatment can not be obtained for paint mist in the waste gas, thereby reducing the use effect of the device and being not beneficial to environmental protection.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an easy and simple to handle, the suitability is strong, and purification efficiency is high and the running cost is extremely low, and zeolite molecular sieve has the adsorption capacity big and safe and reliable's exhaust gas purification device, is realized through following scheme.

In order to realize the above purpose, the utility model discloses a technical scheme be: the utility model provides a waste gas purification device, includes dry-type filter and adsorption bed, be connected through first ooff valve between dry-type filter and the adsorption bed, its characterized in that, adsorption bed gas outlet one end is connected with the spark arrester of arranging catalytic combustion bed inside in through the desorption fan, catalytic combustion bed inner wall one side fixedly connected with zeolite molecular sieve, the tonifying cold fan that is connected with the adsorption bed is installed to catalytic combustion bed gas outlet one side, the one last second ooff valve of adsorption bed is connected with the chimney through system's fan, be equipped with the water conservancy diversion ring rather than the looks adaptation on the chimney inner wall, the water conservancy diversion ring passes through bolt and nut subassembly and chimney realization fixed connection.

Further, the dry filter includes the inlet end that is connected with the outside and gives vent to anger the end, inlet end one side is equipped with fixes on the support and places the inside coating cloud filter of casing in, coating cloud filter one side is equipped with respectively in proper order and just imitates filter, well effect filter and high efficiency filter, all be connected with the installing frame between just imitate filter, well effect filter and high efficiency filter and the shells inner wall.

Furthermore, one side of the outer wall of the dry filter is connected with an access door positioned between the air inlet end and the air outlet end.

Further, the zeolite molecular sieve is in a honeycomb shape: the cellular zeolite molecular sieve has uniform micropores and the pore size is equivalent.

Furthermore, the chimney is fixed on the base and is welded and fixed through a metal sealing ring.

The technical effects of the utility model reside in that: waste gas is at first through the tuber pipe collection back, and organic waste gas gets into high-efficient combination formula dry-type filtration back, reentrant zeolite molecular sieve adsorbs concentrated desorption pyrolysis treatment equipment to reach the purification waste gas purpose, through setting up the filter of different performance, detach the dust in the waste gas, promptly through the filter material with the dust entrapment get off, with the cleanliness factor requirement of guaranteeing to send into the amount of wind. The filtering material used by the dust collector is fiber with a smaller diameter, so that the air flow can smoothly pass through the dust collector, and dust particles can be effectively collected. The pressure drop meter is arranged on each stage of filter so as to remind the operator to replace the filter, the waste gas purification device greatly improves the service performance, the zeolite molecular sieve can be regenerated repeatedly, the zeolite molecular sieve is regenerated periodically by the catalytic regeneration device, and the concentrated gas generated by regeneration enters the regeneration device to be thermally decomposed to form harmless gas to be discharged, so that secondary pollution to the environment can be avoided.

Drawings

FIG. 1 is a schematic structural view of an exhaust gas purifying apparatus according to the present invention;

fig. 2 is a schematic structural view of the dry filter of the present invention.

Reference numerals: 1-a dry filter; 2-an adsorption bed; 3-a first on-off valve; 4-desorption fan; 5-catalytic combustion bed; 6-flame arrestors; 7-a zeolite molecular sieve; 8-supplement air cooler; 9-a second on-off valve; 10-a system fan; 11-a chimney; 12-a flow guide ring; 13-an air inlet end; 14-an air outlet end; 15-a scaffold; 16-paint mist filter plate.

Detailed Description

Referring to the attached drawings 1-2, the waste gas purification device comprises a dry filter 1 and an adsorption bed 2, wherein the dry filter 1 is connected with the adsorption bed 2 through a first switch valve 3, and is characterized in that one end of an air outlet of the adsorption bed 2 is connected with a flame arrester 6 arranged in a catalytic combustion bed 5 through a desorption fan 4, one side of the inner wall of the catalytic combustion bed 5 is fixedly connected with a zeolite molecular sieve 7, one side of the air outlet of the catalytic combustion bed 5 is provided with a supplementary cooling fan 8 connected with the adsorption bed 2, a second switch valve 9 arranged at one end of the adsorption bed 2 is connected with a chimney 11 through a system fan 10, the inner wall of the chimney 11 is provided with a flow guide ring 12 matched with the chimney 11, the flow guide ring 12 is fixedly connected with the chimney 11 through a bolt and nut assembly, the dry filter 1 comprises an air inlet end 13 and an air outlet end 14 which are connected, the air inlet end 13 one side is equipped with fixes on support 15 and places the inside coating cloud filter 16 of casing in, coating cloud filter 16 one side is equipped with primary filter, middle-effect filter and high efficiency filter respectively in proper order, all be connected with the installing frame between primary filter, middle-effect filter and the high efficiency filter and the shells inner wall.

The specific embodiment of the scheme is that the purifying device is designed according to two basic principles of firstly removing particulate matters in the waste gas and then going to zeolite molecular sieve adsorption (high purifying efficiency) and concentrated catalytic combustion (energy saving), the catalytic combustion bed 5 adopts a ceramic honeycomb precious metal catalyst, the resistance is small, the catalytic combustion bed can normally operate by a low-pressure fan, the power consumption is low, the noise is low, meanwhile, a flame arrester 6 and a supplementary cooling fan 8 on the catalytic combustion bed 5 can respectively prevent flame spread of inflammable gas and inflammable liquid steam and effectively adjust the temperature of the catalytic combustion bed 5, the discharged purified gas can be more convenient for discharging the gas through a guide ring 12 on a chimney 11, and the zeolite molecular sieve adsorbing material-honeycomb zeolite molecular sieve adopting the absorption technology has superior thermodynamic performance compared with the particle (rod) shape, and is low in resistance and consumption, the zeolite molecular sieve bed attached with organic waste gas can be desorbed and regenerated by using heat generated by catalytic combustion treatment of waste gas, and the desorbed gas is sent to a catalytic combustion chamber for purification, so that only a small amount of energy is needed, the operation cost is low, and the energy-saving effect is obvious.

The specific embodiment of the scheme is that the adsorption-concentration catalytic combustion desorption of the zeolite molecular sieve 7 organically combines the advantages of the two. The method comprises the steps of firstly utilizing a zeolite molecular sieve for adsorption concentration, utilizing catalytic combustion equipment and utilizing hot air to heat a zeolite molecular sieve adsorption bed when adsorption of the zeolite molecular sieve 7 reaches saturation, and enabling high-concentration waste gas desorbed from the adsorption bed to carry out oxidation reaction in the catalytic reaction bed when the catalytic combustion reaction bed is heated to 300-450 ℃ and the local part of the zeolite molecular sieve adsorption bed reaches 60-150 ℃. And (4) feeding the high-temperature gas after reaction into a zeolite molecular sieve adsorption bed for desorption. The desorbed waste gas enters a catalytic regeneration device and can be reused as fuel, so that the heat required by catalytic combustion is reduced.

Preferably, an access door between the air inlet end 13 and the air outlet end 14 is connected to one side of the outer wall of the dry filter 1, and the zeolite molecular sieve 7 is in a honeycomb shape: the honeycomb zeolite molecular sieve is provided with uniform micropores with the same aperture size, the chimney 11 is fixed on the base and welded and fixed through a metal sealing ring,

the foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An exhaust gas purification device comprises a dry filter (1) and an adsorption bed (2), the dry filter (1) and the adsorption bed (2) are connected through a first switch valve (3), it is characterized in that one end of the air outlet of the adsorption bed (2) is connected with a flame arrester (6) arranged in the catalytic combustion bed (5) through a desorption fan (4), one side of the inner wall of the catalytic combustion bed (5) is fixedly connected with a zeolite molecular sieve (7), a supplementary cooling fan (8) connected with the adsorption bed (2) is arranged at one side of the air outlet of the catalytic combustion bed (5), a second switch valve (9) at one end of the adsorption bed (2) is connected with a chimney (11) through a system fan (10), a flow guide ring (12) matched with the chimney (11) is arranged on the inner wall of the chimney, the guide ring (12) is fixedly connected with the chimney (11) through a bolt and nut assembly.

2. An exhaust gas purification apparatus as claimed in claim 1, wherein the dry filter (1) comprises an inlet end (13) and an outlet end (14) connected to the outside, a paint mist filter plate (16) fixed on a bracket (15) and disposed inside the housing is disposed on one side of the inlet end (13), a primary filter, a secondary filter and a high efficiency filter are disposed on one side of the paint mist filter plate (16), and a mounting frame is connected between the primary filter, the secondary filter and the high efficiency filter and the inner wall of the housing.

3. An exhaust gas purification apparatus as claimed in claim 2, wherein an access door is connected to an outer wall side of the dry filter (1) between the inlet end (13) and the outlet end (14).

4. An exhaust gas purification apparatus as claimed in claim 1, wherein the zeolite molecular sieve (7) is formed in a honeycomb shape: the cellular zeolite molecular sieve has uniform micropores and the pore size is equivalent.

5. An exhaust gas purification apparatus as claimed in claim 1, wherein the chimney (11) is fixed to the base and is welded thereto by a metal gasket.