CN205323483U - Exhaust gas purification device of paint produce in -process - Google Patents

Abstract

The utility model discloses an exhaust gas purification device of paint produce in -process, including 2 parallelly connected adsorption beds, every adsorption bed bottom all is provided with the waste gas import, and the top all is provided with exhaust outlet, sets up multiseriate activated carbon layer and heat exchange tube layer in the adsorption bed perpendicularly, separates between the two to set up, and every air inlet that is listed as the heat exchange tube layer all is linked together with the inlet manifold, and every gas outlet that is listed as the heat exchange tube layer all is linked together with exhaust manifold, silk screen filter export links to each other through the waste gas import of bleeder and 2 adsorption beds, and the exhaust outlet of 2 adsorption beds all is linked together with gaseous calandria, and gaseous calandria is linked together through desorption fan and catalytic combustion bed entry all the way, and the export and the steam calandria of catalytic combustion bed are linked together, and 2 way steam calandrias are linked together with the inlet manifold of 2 parallelly connected adsorption beds respectively, the contact of desorption in -process air with organic waste gas has been avoided to this device, has effectively avoided organic waste gas explosion and the active carbon incident of catching fire, guarantees the device safe operation.

Description

Waste gas purification apparatus in coating production process

Technical field

This utility model relates to the waste gas purification apparatus in a kind of coating production process。

Background technology

At present both at home and abroad the conventional method of administering of the organic exhaust gas in coating production process there are three kinds, liquid absorption method, active carbon adsorption and Production by Catalytic Combustion Process；Wherein, although Production by Catalytic Combustion Process is to organic exhaust gas can be changed into harmless carbon dioxide and water, thus reaching thoroughly to remove the purpose of organic exhaust gas, but require during burning that waste gas to have higher temperature, and in order to improve the temperature of waste gas, need to consume substantial amounts of fuel, running cost uprises, and regenerant is also the mixture of solvent and water after liquid absorption method and active carbon adsorption process, relate to the process problem of follow-up waste liquid, thus it is necessary to develop a kind of purifier for the waste gas in coating production process。

Patent 02284062.1 discloses a kind of organic waste gas purifying device, and whole equipment mainly includes dirt catcher, the adsorbent bed of three or three more parallels, desorption blower fan, main air blower and catalysis burning bed etc.。This kind of equipment integrates adsorption and desorption and catalysis burning, can effectively process the industrial waste gas of generation。The desorption process of this equipment is, the adsorbent bed of the state that reaches capacity stops absorption, the steam that catalysis burning bed is sent enters adsorbent bed, activated carbon is heated and parses organic gas, the gas parsed is introduced catalysis burning bed by desorption blower fan to carry out purifying burning, purify waste gas, and the steam of discharge is back to the regeneration of activated carbon。But; in component in organic exhaust gas, often comprising under the room temperature such as solvent such as butanone for liquid but the relatively low composition of boiling point, its steam and air can form explosive mixture; easily cause the activated carbon in adsorbent bed to catch fire in desorption process, affect the safe handling of equipment；In order to solve this problem, adsorbent bed has been improved by patent 201010175816.X, a pneumatic trough it is correspondingly arranged before each active carbon layer, the organic exhaust gas that property layer of charcoal parses is gone out along pneumatic trough, then after being collected by gas gathering manifold, discharge from desorption, so that negative pressure point is uniform in adsorbent bed, avoid and locally overheated dead angle occurs in adsorbent bed in desorption process, cause that low ignition point organic gas is because of concentration, temperature drift and spontaneous combustion, although although this device reduces danger coefficient, but fundamentally do not solve the mixing of steam and air, it is likely to result in volatile possibility。

Utility model content

This utility model provides the waste gas purification apparatus in a kind of coating production process, activated carbon adsorption-desorption concentration-Production by Catalytic Combustion Process is combined by this device, compact conformation, not only effectively removes the dust produced in coating production process, organic exhaust gas, and take full advantage of thermal source, equipment investment and operating cost are saved, additionally, desorption process avoids contacting of air and organic exhaust gas, it is prevented effectively from organic exhaust gas blast and activated carbon fire event that desorption process causes, it is ensured that equipment safety runs。

In order to solve above the deficiencies in the prior art, this utility model be employed technical scheme comprise that such, a kind of waste gas purification apparatus in coating production process, including wire gauzee filter, 2 adsorbent beds in parallel, desorption blower fan and catalysis burning bed, it is provided with exhaust gas inlet bottom every adsorbent bed, top is provided with waste gas outlet, multiple row active carbon layer and heat exchange tube layer it is vertically arranged in adsorbent bed, between the two every setting, the air inlet of each column heat exchange tube layer is all connected with inlet manifold, and the gas outlet of each column heat exchange tube layer is all connected with exhaust main；Described wire gauzee filter outlet is connected by the exhaust gas inlet of branched pipe and 2 adsorbent beds in parallel, the waste gas outlet of 2 adsorbent beds in parallel is all connected with gas comb, described gas comb is divided into 2 tunnels, one road gas comb and atmosphere, another road gas comb is connected with catalysis burning bed entrance by desorption blower fan, the outlet of catalysis burning bed is connected with steam comb, described steam comb is divided into 3 tunnels, wherein, the inlet manifold of the adsorbent bed that two-way steam comb is in parallel with 2 respectively is connected, another road steam comb and atmosphere。

Preferably, described active carbon layer is made up of with the activated carbon being filled in activated carbon frame netted activated carbon frame。

Preferably, described heat exchange tube layer is coil。

Beneficial effect:

1, activated carbon adsorption-desorption concentration-Production by Catalytic Combustion Process is combined by this utility model, compact conformation, not only effectively removes the dust produced in coating production process, organic exhaust gas, and takes full advantage of thermal source, has saved equipment investment and operating cost。

2, in adsorbent bed, Multi-layer exchanging heat pipe is increased, by itself and the setting of active carbon layer interval, while the equipment eliminating mixed flow heat exchanger takes up an area, ensure that the uniform of heat in desorption process, improve desorption efficiency, and avoid contacting of air and organic exhaust gas, it is prevented effectively from organic exhaust gas blast and activated carbon fire event that desorption process causes, it is ensured that equipment safety runs。

Accompanying drawing explanation

Fig. 1 is this utility model structural representation；

Fig. 2 is the structural representation of heat exchange tube layer。

Detailed description of the invention

In order to deepen understanding of the present utility model, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, and this embodiment is only used for explaining this utility model, is not intended that the restriction to this utility model protection domain。

Referring to Fig. 1, a kind of waste gas purification apparatus in coating production process, including the adsorbent bed 2 that wire gauzee filter 1,2 is in parallel, desorption blower fan 3 and catalysis burning bed 4, it is provided with exhaust gas inlet bottom every adsorbent bed, top is provided with waste gas outlet, is vertically arranged multiple row active carbon layer 5 and heat exchange tube layer 6, between the two every setting in adsorbent bed, the air inlet of each column heat exchange tube layer 6 is all connected with inlet manifold 7, and the gas outlet of each column heat exchange tube layer 6 is all connected with exhaust main 8；Described wire gauzee filter 1 is exported and is connected by the exhaust gas inlet of a branched pipe and 2 adsorbent beds in parallel, the waste gas outlet of 2 adsorbent beds in parallel is all connected with gas comb, described gas comb is divided into 2 tunnels, one road gas comb and atmosphere, another road gas comb is connected with catalysis burning bed 4 entrance by desorption blower fan 3, the outlet of catalysis burning bed 4 is connected with steam comb, described steam comb is divided into 3 tunnels, wherein, the inlet manifold of the adsorbent bed that two-way steam comb is in parallel with 2 respectively is connected, another road steam comb and atmosphere。

Wherein, described active carbon layer 5 is made up of with the activated carbon being filled in activated carbon frame netted activated carbon frame。

As in figure 2 it is shown, described heat exchange tube layer 6 is coil。

Work process: after the waste gas produced in coating production process is tentatively filtered by wire gauzee filter 1, enter through the exhaust gas inlet of branched pipe 1 adsorbent bed from 2 adsorbent beds, the tension force with porous and apparent gap due to the activated carbon in adsorbent bed, in waste gas, dust granules and organic solvent are adsorbed in the space of activated carbon, waste gas after purification is discharged through the waste gas outlet of this adsorbent bed, drains into air by the road gas comb with atmosphere；When the absorption of this adsorbent bed reaches capacity, stop the adsorption operations to internal crucible, be switched to another adsorbent bed and carry out absorption work；And this adsorbent bed, enter desorption process, the gas produced by catalysis burning bed enters in heat exchange tube layer 6 either directly through the inlet manifold 7 of adsorbent bed, active carbon layer 5 in adsorbent bed is heated, activated carbon parses organic gas (this organic gas is equivalent to be concentrated) after being heated, this organic gas enters desorption blower fan 3 by the road gas comb being connected with desorption blower fan, it is then fed in catalysis burning bed 4 and carries out catalysis burning (being broken down into carbon dioxide and water), tail gas after burning drains into air in part through the road steam comb being connected with air, another part is sent to another saturated adsorbent bed by the road steam comb being connected with adsorbent bed, regeneration for activated carbon。

The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model。

Claims (3)

1. the waste gas purification apparatus in a coating production process, it is characterized in that, including wire gauzee filter, 2 adsorbent beds in parallel, desorption blower fan and catalysis burning bed, it is provided with exhaust gas inlet bottom every adsorbent bed, top is provided with waste gas outlet, is vertically arranged multiple row active carbon layer and heat exchange tube layer, between the two every setting in adsorbent bed, the air inlet of each column heat exchange tube layer is all connected with inlet manifold, and the gas outlet of each column heat exchange tube layer is all connected with exhaust main；Described wire gauzee filter outlet is connected by the exhaust gas inlet of branched pipe and 2 adsorbent beds in parallel, the waste gas outlet of 2 adsorbent beds in parallel is all connected with gas comb, described gas comb is divided into 2 tunnels, one road gas comb and atmosphere, another road gas comb is connected with catalysis burning bed entrance by desorption blower fan, the outlet of catalysis burning bed is connected with steam comb, described steam comb is divided into 3 tunnels, wherein, the inlet manifold of the adsorbent bed that two-way steam comb is in parallel with 2 respectively is connected, another road steam comb and atmosphere。

2. the waste gas purification apparatus in a kind of coating production process according to claim 1, it is characterised in that described active carbon layer is made up of with the activated carbon being filled in activated carbon frame netted activated carbon frame。

3. the waste gas purification apparatus in a kind of coating production process according to claim 1, it is characterised in that described heat exchange tube layer is coil。