VOC gas catalytic combustion and adsorption all-in-one machine

Abstract

The utility model discloses a VOC (volatile organic compound) gas catalytic combustion and adsorption all-in-one machine, and relates to the technical field of VOC gas treatment. The VOC gas catalytic combustion and adsorption all-in-one machine comprises a shell, a heat conduction inner cylinder and a combustor, the heat conduction inner cylinder is arranged on the inner side of the shell and is of a hollow structure with openings in the two ends, and the combustor is arranged on the inner side of the heat conduction inner cylinder and located at the position close to the opening in the bottom of the heat conduction inner cylinder. According to the VOC gas catalytic combustion and adsorption all-in-one machine, through the matched design of the shell, the heat conduction inner cylinder, the combustor, the catalytic bed and the filter device, adsorption, catalysis and combustion structures are integrated in the shell and the heat conduction inner cylinder, the size of the machine is reduced, and practicability and flexibility are improved; in addition, one ends of the catalytic bed and the filter device are open, and the other ends of the catalytic bed and the filter device are designed into closed hemispherical hollow cylinder structures, so that the contact area and the passing rate of the VOC with the catalytic bed and the filter device are ensured in a limited space.

Description

Technical Field

[0001] The utility model relates to the technical field of VOC gas treatment, in particular to a VOC gas catalytic combustion adsorption integrated machine. Background Art

[0002] VOC (volatile organic compounds) is a class of chemicals that are harmful to the environment and human health, commonly found in industrial production, automobile exhaust, paint and other occasions; effective treatment of VOC waste gas is crucial to environmental protection and human health; VOC gas catalytic combustion and adsorption integrated machine is designed to combine catalytic combustion and adsorption technology to efficiently purify VOC waste gas and convert it into harmless substances, thereby reducing pollution to the environment.

[0003] The disclosure discloses a high-concentration VOC gas catalytic combustion adsorption integrated machine with publication number CN212492231 U; the machine can pre-adsorb organic gas to reduce the exhaust gas concentration, make the catalytic combustion reaction of organic gas more thorough, and achieve better treatment effect; the machine comprises an adsorption box, a premixing tank, a catalytic combustion box, a first connecting pipe, a second connecting pipe, a spiral air inlet pipe, a desorption reflux pipe, a first fan and a second fan; an adsorption chamber is arranged in the adsorption box, an activated carbon adsorption bed is arranged in the adsorption chamber, an air inlet pipe is arranged at the left end of the adsorption box, a premixing chamber is arranged in the premixing tank, a catalytic combustion chamber is arranged in the catalytic combustion box, a catalytic combustion bed is arranged in the catalytic combustion chamber, an exhaust pipe is arranged at the bottom end of the catalytic combustion box, and a one-way throttling air valve is arranged on the desorption reflux pipe.

[0004] The above-mentioned VOC gas catalytic combustion adsorption integrated machine connects each device separately, occupies a large area and has limited processing efficiency and low practicality. Therefore, a new VOC gas catalytic combustion adsorption integrated machine is provided to solve this problem. Utility Model Content

[0005] The utility model aims to provide a VOC gas catalytic combustion adsorption integrated machine, which can solve the problems of large volume and low efficiency of some VOC gas catalytic combustion adsorption equipment.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an OC gas catalytic combustion adsorption integrated machine, comprising a shell, a heat-conducting inner cylinder and a burner, the heat-conducting inner cylinder is arranged on the inner side of the shell and is a hollow structure with openings at both ends, and the burner is arranged on the inner side of the heat-conducting inner cylinder and is located near the bottom opening of the heat-conducting inner cylinder; a catalytic bed and a filter device, the catalytic bed and the filter device are both arranged on the inner side of the heat-conducting inner cylinder, the catalytic bed and the filter device are both hollow cylindrical structures with an opening at one end and a closed hemispherical shape at the other end, the catalytic bed is arranged in the heat-conducting inner cylinder near the bottom opening of the heat-conducting inner cylinder and the opening of the catalytic bed faces the bottom of the heat-conducting inner cylinder, the filter device is arranged in the heat-conducting inner cylinder near the top opening of the heat-conducting inner cylinder and the opening of the filter device faces the top of the heat-conducting inner cylinder, and the burner is arranged on the inner side of the catalytic bed.

[0007] Preferably, connecting seats are integrally formed at both end openings of the heat-conducting inner cylinder, and the catalytic bed and the filter element are detachably connected to the connecting seats at the bottom and top of the heat-conducting inner cylinder respectively, and a rounded corner is integrally formed at the connection between the connecting seat at the bottom opening of the heat-conducting inner cylinder and the bottom end surface of the heat-conducting inner cylinder.

[0008] Preferably, a guide seat of a truncated cone structure is provided at the bottom of the shell, and an exhaust channel for the gas after catalytic combustion to pass through is formed between the shell and the heat-conducting inner cylinder. A plurality of groups of heat exchange fins in an annular array and distributed vertically are connected between the inner wall of the shell and the outer wall of the heat-conducting inner cylinder near the top of the shell and the heat-conducting inner cylinder, so that the VOC entering the equipment is preheated by the heat of the VOC after combustion treatment.

[0009] Preferably, the top opening of the heat-conducting inner cylinder is integrally connected with an air intake duct communicating with the interior thereof, the top port of the air intake duct extends to the top of the shell, and the top opening of the shell is integrally provided with an exhaust duct communicating with the interior thereof.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] (1) The VOC gas catalytic combustion adsorption integrated machine integrates the adsorption, catalytic and combustion structures in the shell and the heat-conducting inner cylinder through the coordinated design of the shell, the heat-conducting inner cylinder, the burner, the catalyst bed and the filter element, which is conducive to reducing the size of the machine and improving practicality and flexibility. In addition, the catalyst bed and the filter element are designed as a hollow cylinder with an open end and a closed hemispherical end at the other end, which ensures the contact area and passing rate of VOC with the catalyst bed and the filter element in a limited space, thereby improving the efficiency and effect of VOC treatment.

[0012] (2) The VOC gas catalytic combustion adsorption integrated machine, through the coordinated design of the shell, heat-conducting inner cylinder, guide seat and heat exchange fins, can use the heat of the VOC after combustion treatment to preheat the VOC entering the equipment, thereby improving the VOC heating efficiency and cooling the discharged VOC, achieving an efficient heat exchange effect, further improving the performance of the machine, and facilitating its promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 It is a top view of the utility model;

[0015] Figure 3 It is the AA cross-sectional view of the present utility model.

[0016] In the figure: 1. Shell; 2. Heat-conducting inner cylinder; 3. Burner; 4. Connecting seat; 5. Catalytic bed; 6. Filter element; 7. Guide seat; 8. Exhaust channel; 9. Heat exchange fins; 10. Air intake pipe; 11. Exhaust pipe. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3The utility model provides a technical solution: a VOC gas catalytic combustion adsorption integrated machine, comprising a shell 1, a heat-conducting inner cylinder 2 and a burner 3, wherein the heat-conducting inner cylinder 2 is arranged on the inner side of the shell 1 and is a hollow structure with openings at both ends, and the burner 3 is arranged on the inner side of the heat-conducting inner cylinder 2 and is located near the bottom opening of the heat-conducting inner cylinder 2, and the adsorption, catalysis and combustion structures are integrated into the shell 1 and the heat-conducting inner cylinder 2, which is conducive to reducing the volume of the machine; a catalytic bed 5 and a filter device 6, both of which are arranged on the inner side of the heat-conducting inner cylinder 2, and both of which are open at one end and hollow at the other. A hollow cylindrical structure with a closed hemispherical shape at one end, a catalytic bed 5 and a filter element 6 with an open end at one end and a closed hemispherical shape at the other end is designed to ensure the contact area and passage rate of VOC with the catalytic bed 5 and the filter element 6 within a limited space. The catalytic bed 5 is arranged in the heat-conducting inner cylinder 2 at a position close to the bottom opening of the heat-conducting inner cylinder 2, and the opening of the catalytic bed 5 faces the bottom of the heat-conducting inner cylinder 2. The filter element 6 is arranged in the heat-conducting inner cylinder 2 at a position close to the top opening of the heat-conducting inner cylinder 2, and the opening of the filter element 6 faces the top of the heat-conducting inner cylinder 2. The burner 3 is arranged on the inner side of the catalytic bed 5.

[0019] Among them, the openings at both ends of the heat-conducting inner tube 2 are integrally provided with connecting seats 4, the catalytic bed 5 and the filter element 6 are detachably connected to the connecting seats 4 at the bottom and top of the heat-conducting inner tube 2 respectively, the bottom of the shell 1 is provided with a guide seat 7 of a truncated cone structure, and a discharge channel 8 for the gas after catalytic combustion is formed between the shell 1 and the heat-conducting inner tube 2, and the connection between the connecting seat 4 at the bottom opening of the heat-conducting inner tube 2 and the bottom end surface of the heat-conducting inner tube 2 is integrally provided with a fillet portion, and the inner wall of the shell 1 and the outer wall of the heat-conducting inner tube 2 are close to the shell 1 and the heat-conducting inner tube 2. A plurality of groups of heat exchange fins 9 in a circular array and distributed vertically are connected at the top of the inner tube 2, which can preheat the VOC entering the equipment with the help of the heat of the VOC after combustion treatment, thereby improving the heating efficiency of the VOC and cooling the discharged VOC to achieve efficient heat exchange effect. An air intake pipe 10 connected to the interior of the heat-conducting inner tube 2 is integrally connected to the top opening of the heat-conducting inner tube 2, and the top port of the air intake pipe 10 extends to the top of the shell 1. An exhaust pipe 11 connected to the interior of the shell 1 is integrally provided at the top opening of the shell 1.

[0020] Working principle: control the burner 3 to start, and transport the VOC to be treated into the heat-conducting inner cylinder 2 through the air intake pipe 10. The filter device 6 performs adsorption and filtration treatment on the VOC. The VOC after adsorption and filtration enters the catalytic bed 5 through the catalytic bed 5 for catalytic and combustion treatment. The VOC after catalytic combustion treatment enters the exhaust channel 8 through the guide seat 7 and the rounded corners of the connection between the heat-conducting inner cylinder 2 and the connecting seat 4. When the VOC passes through the heat exchange fins 9, the heat on it is transferred to the heat exchange fins 9. The heat exchange fins 9 then transfer the heat to the VOC that subsequently enters the heat-conducting inner cylinder 2 to achieve heat exchange. The VOC after heat exchange is discharged through the exhaust pipe 11.

[0021] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. VOC gas catalytic combustion adsorption integrated machine, characterized in that: include: A shell (1), a heat-conducting inner cylinder (2) and a burner (3), wherein the heat-conducting inner cylinder (2) is arranged on the inner side of the shell (1) and is a hollow structure with openings at both ends, and the burner (3) is arranged on the inner side of the heat-conducting inner cylinder (2) and is located near the bottom opening of the heat-conducting inner cylinder (2); The catalyst bed (5) and the filter device (6) are both arranged on the inner side of the heat-conducting inner cylinder (2). The catalyst bed (5) and the filter device (6) are both hollow cylinder structures with one end open and the other end in a closed hemispherical shape. The catalyst bed (5) is arranged in the heat-conducting inner cylinder (2) at a position close to the bottom opening of the heat-conducting inner cylinder (2), and the opening of the catalyst bed (5) faces the bottom of the heat-conducting inner cylinder (2). The filter device (6) is arranged in the heat-conducting inner cylinder (2) at a position close to the top opening of the heat-conducting inner cylinder (2), and the opening of the filter device (6) faces the top of the heat-conducting inner cylinder (2). The burner (3) is arranged on the inner side of the catalyst bed (5).

2. The VOC gas catalytic combustion adsorption integrated machine according to claim 1, characterized in that: The openings at both ends of the heat-conducting inner cylinder (2) are integrally provided with connection seats (4), and the catalytic bed (5) and the filter element (6) are detachably connected to the connection seats (4) at the bottom and top of the heat-conducting inner cylinder (2), respectively.

3. The VOC gas catalytic combustion adsorption integrated machine according to claim 2, characterized in that: A guide seat (7) with a truncated cone structure is provided at the bottom of the shell (1), and a discharge channel (8) through which gas after catalytic combustion can pass is formed between the shell (1) and the heat-conducting inner cylinder (2).

4. The VOC gas catalytic combustion adsorption integrated machine according to claim 3 is characterized in that: A fillet portion is integrally formed at the connection point between the connection seat (4) at the bottom opening of the heat-conducting inner cylinder (2) and the bottom end surface of the heat-conducting inner cylinder (2).

5. The VOC gas catalytic combustion adsorption integrated machine according to claim 4, characterized in that: A plurality of groups of heat exchange fins (9) arranged in an annular array and distributed vertically are connected between the inner wall of the shell (1) and the outer wall of the heat-conducting inner cylinder (2) at positions close to the tops of the shell (1) and the heat-conducting inner cylinder (2).

6. The VOC gas catalytic combustion adsorption integrated machine according to claim 5, characterized in that: An air intake pipe (10) communicating with the interior of the heat-conducting inner cylinder (2) is integrally connected to the top opening of the heat-conducting inner cylinder (2); a top port of the air intake pipe (10) extends to the top of the shell (1); and an exhaust pipe (11) communicating with the interior of the shell (1) is integrally provided at the top opening of the shell (1).

Images