CN210278693U

CN210278693U - Active carbon waste gas treatment device

Info

Publication number: CN210278693U
Application number: CN201920408588.2U
Authority: CN
Inventors: 赵则锋; 邹明水; 姜钰佳
Original assignee: Hangzhou Yimeng Environmental Technology Co Ltd
Current assignee: Hangzhou Yimeng Environmental Technology Co Ltd
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2020-04-10
Anticipated expiration: 2029-03-28

Abstract

The utility model relates to the field of waste gas treatment, and discloses an active carbon waste gas treatment device, which comprises a box body for treating waste gas, wherein an air inlet pipe (11), a dry filter (2), an active carbon adsorption device (3) and an air outlet pipe (12) are sequentially arranged in the box body along the flow direction of gas, the dry filter (2) and the active carbon adsorption device (3) are connected through a first pipeline (13), and a valve (131) is arranged on the first pipeline (13); the active carbon adsorption device (3) comprises an adsorption barrel body (31) and an active carbon adsorption bed (32) arranged in the adsorption barrel body (31). The utility model discloses a purify, desorption process automation, compare with recovery type organic waste gas purifier, need not be equipped with additional energy such as compressed air, the operation process does not produce secondary pollution, and equipment investment and working costs are low.

Description

Active carbon waste gas treatment device

Technical Field

The utility model relates to an exhaust-gas treatment field has especially related to active carbon exhaust treatment device.

Background

In order to prevent moisture and dust particles in the waste gas from entering the adsorption and purification device system, a dry dust removal filter is arranged in front of the active carbon adsorption bed; the dry type filtering material is a material specially developed and suitable for air purification, is formed by compounding multiple layers of glass fibers, and has the density gradually increased along with the thickness. When filtering, the multilayer fiber has the functions of intercepting, colliding, diffusing, absorbing and the like on micro particles, and dust particles are contained in the material when exhaust gas passes through the material.

At present, the problem of exhaust-gas treatment has been solved to the utility model patent of patent No. 201220510534.5, but still has the defect that adsorption equipment can't be changed and remaining waste gas catalytic combustion can't be to.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to unable change adsorption equipment among the prior art and unable shortcoming to surplus waste gas catalytic combustion, provide active carbon exhaust treatment device.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

the activated carbon waste gas treatment device comprises a box body for treating waste gas, wherein an air inlet pipe, a dry filter, an activated carbon adsorption device and an air outlet pipe are sequentially arranged in the box body along the flow direction of gas, the dry filter and the activated carbon adsorption device are connected through a first pipeline, and a valve is arranged on the first pipeline; the active carbon adsorption device comprises an adsorption barrel body and an active carbon adsorption bed arranged in the adsorption barrel body, the active carbon adsorption bed divides the adsorption barrel body into a front cavity and a rear cavity, a first pipeline is communicated with the front cavity, the rear cavity is communicated with an air outlet pipe, a sliding groove is formed in the inner wall of the adsorption barrel body, the active carbon adsorption bed further comprises a framework body matched with the sliding groove, the active carbon adsorption bed is arranged in the framework body and located in the plane of the sliding groove, an opening is formed in the adsorption barrel body, and the framework body drives the active carbon adsorption bed to be pulled out through the opening and replaced.

Preferably, the activated carbon adsorption devices are provided with a plurality of groups, and the front cavity and the rear cavity of each group of activated carbon adsorption devices are respectively connected with the dry filter and the air outlet pipe.

Preferably, the box body is also provided with a catalytic combustion furnace which is communicated with the front cavity of the adsorption barrel body through a pipeline, and the catalytic combustion furnace also comprises a heating air pump communicated with the front cavity, and the heating air pump blows hot air into the front cavity and drives impurity gas which cannot be filtered to carry out secondary treatment through the catalytic combustion furnace.

Preferably, the adsorption barrel further comprises a controller, electrochemical sensors are mounted in the front cavities of the adsorption barrel body, the electrochemical sensors detect the gas concentration in the front cavities and form concentration signals to be sent to the controller, and the controller controls the opening and closing of the valve according to the received concentration signals.

Preferably, the handle is attached to a side of the frame facing the opening, and a sealing rubber ring fitted to the opening is provided on the side of the frame facing the opening.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: the whole system equipment realizes the automation of the purification and desorption processes, and compared with a recovery type organic waste gas purification device, the device does not need to be equipped with additional energy sources such as compressed air and the like, does not generate secondary pollution in the operation process, and has low equipment investment and operation cost; the filter is adopted to filter small particles in front of the active carbon adsorption bed, so that the purification efficiency is high, and the service life of the adsorption device is ensured; the specially formed honeycomb-shaped active carbon is used as an adsorption material, and the specific gravity of the honeycomb-shaped active carbon is 8-10 times of that of the strip-shaped active carbon fiber, so that the adsorption organic solvent before regeneration can reach 25% of the total weight of the active carbon, and the honeycomb-shaped active carbon has the characteristics of long service life, low operation resistance of an adsorption system, high purification efficiency and the like; the equipment occupies small area and has lighter weight, and the filter material of the adsorption bed adopts a stacking structure, so that the loading is convenient and the replacement is easy; the catalyst has the characteristics of small resistance, high activity, long service life, low decomposition temperature, short desorption preheating time, low energy consumption, good stability and the like, and can maintain spontaneous combustion when the concentration of organic waste gas reaches 2000 ppm. The catalytic combustor has high conversion efficiency and stable performance. The catalytic combustion rate reaches more than 91 percent; the waste heat is utilized, and the energy is saved. In the device, the desorption and desorption of the active carbon all use hot air as a desorption medium, and the hot air flow is from the residual heat after catalytic combustion in the system; the desorbed concentrated organic waste gas enters a catalytic combustor for purification treatment, no additional energy is needed, and the operating cost is greatly reduced; the PLC control system is adopted, the automation of the equipment operation and the operation process is realized, and the operation process is safe, stable and reliable.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the activated carbon adsorption device of fig. 1.

Fig. 3 is a schematic block diagram of the present invention.

The names of the parts indicated by the numerical references in the drawings are as follows: 1-electrochemical sensor, 2-dry filter, 3-active carbon adsorption device, 4-catalytic combustion furnace, 5-heating air pump, 6-controller, 11-air inlet pipe, 12-air outlet pipe, 13-first pipeline, 131-valve, 31-adsorption barrel, 32-active carbon adsorption bed, 33-chute, 310-opening, 311-front cavity, 312-rear cavity, 321-frame, 3211-handle, 3212-sealing rubber ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

An activated carbon waste gas treatment device comprises a box body for treating waste gas, wherein an air inlet pipe 11, a dry filter 2, an activated carbon adsorption device 3 and an air outlet pipe 12 are sequentially arranged in the box body along the flow direction of gas, the dry filter 1 and the activated carbon adsorption device 3 are connected through a first pipeline 13, and a valve 131 is arranged on the first pipeline 13; active carbon adsorption device 3 includes adsorption barrel 31 and the active carbon adsorption bed 32 of installing in adsorption barrel 31, active carbon adsorption bed 32 will adsorb barrel 31 and cut apart into antechamber 311 and back chamber 312, first pipeline 13 and antechamber 311 intercommunication,

back chamber

312 and 12 intercommunications of outlet duct, be equipped with the spout 33 that the level set up on the 31 inner wall of adsorption barrel, spout 33 has two and sets up respectively in the symmetry both sides of adsorption barrel 31, still include with spout 33 complex framework 321, active carbon adsorption bed 32 installs at framework 321 and is located spout 33 place plane, be equipped with opening 310 on the adsorption barrel 31, framework 321 drives active carbon adsorption bed 32 and pulls out and replace by opening 310. Activated carbon is very suitable for adsorbing organic solvents in exhaust gases. This is because other adsorbents have hydrophilicity and can adsorb water molecules in gas, while the adsorption rate is low for nonpolar or weakly polar organic solvents: on the contrary, the activated carbon has hydrophobicity and higher adsorption efficiency on organic solvents. The adsorption of organic waste gas by utilizing the adsorption characteristic of microporous activated carbon is the most effective industrial treatment means. The activated carbon adsorption device adopts novel activated carbon, the activated carbon has large specific surface area and porosity, strong adsorption capacity, better mechanical strength, chemical stability and thermal stability, and the purification efficiency reaches more than 90%. Organic waste gas passes through adsorption equipment, and with the active carbon contact, the organic pollutant in the waste gas is adsorbed on the active carbon surface to break away from in the air current, reach purifying effect. The air flow discharged from the activated carbon adsorption device reaches the emission standard and can be directly discharged. In the design of the activated carbon adsorber, a vertical multi-layer design is adopted. The honeycomb activated carbon is selected as the adsorbent, and has the characteristics of good adsorption performance, small fluid resistance and the like. The active carbon adsorption bed is internally provided with an active carbon layer and an airflow distributor to concentrate and purify organic gas, and is a main part and a core process of the first main cycle of the whole device, the active carbon is filled in a modularized way, and the height of the active carbon bed layer is 800 mm.

The active carbon adsorption devices 3 are provided with four groups, and the front cavity 311 and the rear cavity 312 of each active carbon adsorption device 3 are respectively connected with the dry filter 2 and the air outlet pipe 12. Each group of activated carbon adsorption devices 3 are connected with the front cavity 311 through a first pipeline 13, and each first pipeline 13 is provided with a valve 131.

The gas concentration absorption barrel comprises an absorption barrel body 31, and is characterized by further comprising a controller 6, wherein the electrochemical sensors 1 are installed in the front cavities 311 of the absorption barrel body 31, the electrochemical sensors 1 detect the gas concentration in the front cavities 311 and form concentration signals to be sent to the controller 6, and the controller 6 controls the opening and closing of the valve 131 according to the received concentration signals. When the adsorption capacity of one set of the activated carbon adsorption devices 3 is saturated, the controller 6 controls the valve 131 on the first pipeline 13 to be opened and the exhaust gas is subjected to adsorption treatment by the other set of the activated carbon adsorption devices 3.

Example 2

The same as embodiment 1, except that a handle 3211 is attached to the frame 312 on the side facing the opening 310, and a sealing rubber ring 3212 fitted to the opening 310 is provided on the frame 321 on the side facing the opening 310.

Example 3

The same as embodiment 1, except that the box body is further provided with a catalytic combustion furnace 4, the catalytic combustion furnace 4 is communicated with the front cavity 311 of the adsorption barrel body 31 through a pipeline, the catalytic combustion furnace further comprises a heating air pump 5 communicated with the front cavity 311, and the heating air pump 5 blows hot air into the front cavity 311 and drives impurity gas which cannot be filtered to carry out secondary treatment through the catalytic combustion furnace 4. The waste gas which cannot be filtered and adsorbed in the front cavity 311 can be degraded through high-temperature combustion by heating the air pump 5.

Catalytic combustion is a typical gas-solid phase catalytic reaction, and is essentially deep oxidation with active oxygen. In the catalytic combustion process, the catalyst has the function of reducing activation energy, and meanwhile, the surface of the catalyst has an adsorption function, so that reactant molecules are enriched on the surface, the reaction rate is increased, and the reaction is accelerated. The organic waste gas can be flameless combusted under the condition of lower ignition temperature by the aid of the catalyst, and is oxidized and decomposed into CO2 and H2O, and simultaneously, a large amount of heat energy is released, so that the method for removing harmful substances in the waste gas is achieved. The reaction process is as follows:

in the process of catalytic combustion of the waste gas, the waste gas is sent into a heat exchanger through a pipeline by a heating air pump 5 to be heated for the first time, and then enters a heating chamber to heat the waste gas to the initial temperature required by the catalytic combustion. The heated exhaust gas passes through the catalyst layer to be combusted. Due to the action of the catalyst, the initial temperature of the exhaust gas combustion in the catalytic combustion method is about 250-. Meanwhile, under the action of the activity of the catalyst, the reacted gas generates certain heat, and the high-temperature gas enters the heat exchanger again, is cooled through heat exchange and is finally discharged into the atmosphere at a lower temperature through the fan. The catalytic combustion device is provided with a temperature probe and a cold compensation valve, and when the reaction temperature of the catalytic chamber of the furnace body exceeds a set upper limit, the cold compensation valve is opened to dilute the air inlet source, so that the service life of the equipment is prolonged, and accidents are prevented.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims

1. Active carbon exhaust treatment device, including the box that is used for handling waste gas, its characterized in that: an air inlet pipe (11), a dry filter (2), an activated carbon adsorption device (3) and an air outlet pipe (12) are sequentially arranged in the box body along the flowing direction of air, the dry filter (2) and the activated carbon adsorption device (3) are connected through a first pipeline (13), and a valve (131) is arranged on the first pipeline (13); active carbon adsorption device (3) are including adsorbing staving (31) and installing active carbon adsorption bed (32) in adsorbing staving (31), active carbon adsorption bed (32) will adsorb staving (31) and split into antechamber (311) and back chamber (312), first pipeline (13) and antechamber (311) intercommunication, back chamber (312) and outlet duct (12) intercommunication, be equipped with spout (33) on adsorbing staving (31) inner wall, still include with spout (33) complex framework (321), active carbon adsorption bed (32) are installed in framework (321) and are arranged in spout (33) place plane, be equipped with opening (310) on adsorbing staving (31), framework (321) drive active carbon adsorption bed (32) are located to pull out and carry out the replacement by opening (310).

2. The activated carbon exhaust gas treatment device according to claim 1, characterized in that: the active carbon adsorption devices (3) are provided with a plurality of groups, and the front cavity (311) and the rear cavity (312) of each group of active carbon adsorption devices (3) are respectively connected with the dry filter (2) and the air outlet pipe (12).

3. The activated carbon exhaust gas treatment device according to claim 1, characterized in that: the box body is also provided with a catalytic combustion furnace (4), the catalytic combustion furnace (4) is communicated with a front cavity (311) of the adsorption barrel body (31) through a pipeline, the catalytic combustion furnace also comprises a heating air pump (5) communicated with the front cavity (311), and the heating air pump (5) blows hot air into the front cavity (311) and drives impurity gas which cannot be filtered to carry out secondary treatment through the catalytic combustion furnace (4).

4. The activated carbon exhaust gas treatment device according to claim 1, characterized in that: the gas concentration absorption barrel is characterized by further comprising a controller (6), wherein the electrochemical sensors (1) are installed in the front cavities (311) of the absorption barrel bodies (31), the electrochemical sensors (1) detect the gas concentration in the front cavities (311) and form concentration signals to be sent to the controller (6), and the controller (6) controls the opening and closing of the valves (131) according to the received concentration signals.

5. The activated carbon exhaust gas treatment device according to claim 1, characterized in that: a handle (3211) is installed on one side of the frame body (321) facing the opening (310), and a sealing rubber ring (3212) matched with the opening (310) is arranged on one side of the frame body (321) located at the opening (310).