Activated carbon adsorption equipment for catalytic combustion of waste gas

Abstract

The utility model provides activated carbon adsorption equipment for catalytic combustion of waste gas. The activated carbon adsorption equipment comprises an adsorption box, an adsorption air inlet pipe, an adsorption air outlet pipe, an exhaust fan, a CO furnace, a desorption air inlet pipe, a desorption air return pipe and a desorption fan, a plurality of activated carbon chambers which are distributed left and right are arranged in the adsorption box; an activated carbon layer is mounted in the middle of the activated carbon chamber; the activated carbon chamber is connected with an adsorption air inlet pipe and an adsorption air outlet pipe, the position of the adsorption air inlet pipe is controlled through a first linear air cylinder valve, and the position of the adsorption air outlet pipe is controlled through a rotary air cylinder valve; a desorption air inlet equalizing plate and a desorption air inlet are mounted at the corners of the two sides of the upper part of the activated carbon chamber, a desorption backflow equalizing plate and a desorption air return opening are mounted at the corners of the two sides of the lower part of the activated carbon chamber, and a second linear cylinder valve is mounted at the position, corresponding to the desorption air inlet, in a desorption air inlet runner; a third linear air cylinder valve is installed at the position, corresponding to a desorption air return opening, in the desorption air return flow channel, and the CO furnace is connected with the desorption air inlet flow channel through a desorption air inlet pipe and connected with the desorption air return flow channel through a desorption air return pipe.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to an activated carbon adsorption device for catalytic combustion waste gas. Background Technology

[0002] In the field of VOC (volatile organic compound) waste gas treatment, catalytic combustion and activated carbon adsorption are two widely used technologies. Catalytic combustion technology heats the waste gas to a certain temperature, and under the action of a catalyst, oxidizes and decomposes organic matter into carbon dioxide and water, achieving a highly efficient and thorough purification effect. However, traditional catalytic combustion equipment suffers from drawbacks such as high energy consumption, complex equipment, and high operating costs, especially when treating low-concentration waste gas, resulting in poor economic efficiency. Furthermore, catalytic combustion equipment typically requires high preheating temperatures, further increasing energy consumption.

[0003] Activated carbon adsorption technology uses the adsorption properties of activated carbon to trap organic matter in waste gas, making it suitable for treating low-concentration, high-volume waste gas. Activated carbon adsorption equipment has a simple structure and low cost, but once the activated carbon becomes saturated, it needs to be replaced or regenerated periodically, increasing operating and maintenance costs. Traditional activated carbon desorption and regeneration typically uses steam or hot air desorption. The high-concentration waste gas after desorption still requires further treatment, such as returning it to a catalytic combustion unit for combustion. However, this process suffers from low desorption efficiency, high energy consumption, and a large equipment footprint.

[0004] While existing technologies include waste gas treatment equipment that combines catalytic combustion with activated carbon adsorption, the following shortcomings still exist:

[0005] The equipment has a complex structure: traditional equipment has complicated designs for components such as adsorption carbon boxes, air valves, and air ducts, resulting in high manufacturing costs.

[0006] Low desorption efficiency: The unreasonable design of the desorption duct leads to uneven distribution of hot air and unsatisfactory desorption effect.

[0007] High energy consumption: The hot air circulation efficiency is low and the heat loss is large during the desorption process, which increases energy consumption.

[0008] Poor sealing performance: Traditional air valves (such as round central shaft rotary butterfly valves) have insufficient sealing performance, which can easily cause exhaust gas leakage and affect the treatment effect.

[0009] Therefore, there is an urgent need for a new type of integrated catalytic combustion and activated carbon adsorption equipment that can simplify the structure, reduce costs, improve desorption efficiency and sealing performance, and reduce energy consumption, so as to meet the VOC waste gas treatment industry's demand for efficient, energy-saving and economical equipment. Utility Model Content

[0010] The purpose of this invention is to provide an activated carbon adsorption device for catalytic combustion waste gas to solve the problems mentioned in the background art.

[0011] To achieve the above objectives, this utility model provides the following technical solution:

[0012] An activated carbon adsorption device for catalytic combustion waste gas includes an adsorption box, an adsorption inlet pipe, an adsorption outlet pipe, an exhaust fan, a CO furnace, a desorption inlet pipe, a desorption return pipe, and a desorption fan. The adsorption box contains several activated carbon chambers distributed horizontally. An activated carbon layer is installed in the middle of each activated carbon chamber. An adsorption inlet pipe is connected to the upper end of each activated carbon chamber, and an adsorption outlet pipe is connected to the lower end. A rotary cylinder valve is installed inside the adsorption outlet pipe. A desorption inlet channel is located on one side of the upper part of the adsorption box, and a desorption return channel is located on one side of the lower part. Desorption inlet distribution plates are installed at an angle at the upper left and upper right corners of each activated carbon chamber, along with a desorption inlet located above the distribution plates. The desorption inlets are connected to the desorption inlet channels. Desorption return distribution plates are installed at an angle at the lower left and lower right corners of each activated carbon chamber. The system includes a desorption return air inlet located below the desorption return air distribution plate; the desorption return air inlet is connected to the desorption return air channel; the adsorption inlet pipe is located above the adsorption box and is connected to all adsorption inlet pipes; a first linear cylinder valve is installed on the adsorption inlet pipe at each adsorption inlet position; the adsorption outlet pipe is located below the adsorption box and is connected to all adsorption outlet pipes; the exhaust fan is connected to the end of the adsorption outlet pipe; the desorption inlet pipe is connected between the CO furnace and the desorption inlet air channel; the desorption return air pipe is connected between the CO furnace and the desorption return air channel; a second linear cylinder valve is installed in the desorption inlet air channel at each desorption inlet position; a third linear cylinder valve is installed in the desorption return air channel at each desorption return air inlet position; and the desorption fan is installed on the desorption inlet pipe.

[0013] As further described in this utility model, the activated carbon chamber is provided with three chambers.

[0014] In a further description of this utility model, the desorption inlet air channel is located on the rear side of the upper part of the adsorption box; the desorption return air channel is located on the front side of the lower part of the adsorption box.

[0015] In a further description of this utility model, the rotary cylinder valve is a four-link rotary cylinder valve.

[0016] Further description of this utility model: the desorption air inlet equalizer plate has multiple holes; each hole is provided with an angle-adjustable air guide valve plate; the structure of the desorption return air equalizer plate is the same as that of the desorption air inlet equalizer plate.

[0017] In a further description of the present invention, the outer shell of the adsorption box includes an outer stainless steel plate, thermal insulation cotton, and an inner stainless steel plate arranged sequentially from the outside to the inside.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. In this design, the adsorption air inlet and adsorption air outlet are located on the upper and lower sides of the activated carbon chamber, while the desorption air inlet and desorption return air outlet are integrated in the four corners of the activated carbon chamber. The overall structure is reasonably laid out, improving the space utilization rate.

[0020] 2. The desorption inlet air channel and the desorption return air channel are integrated into the adsorption box to reduce costs and improve the appearance.

[0021] 3. The adsorption air inlet is controlled by a first linear cylinder valve, while the desorption air inlet and desorption return air inlet are controlled by a second and a third linear cylinder valve, respectively. This design features a simple structure, convenient installation and maintenance, and low cost.

[0022] 4. The position of the adsorption air outlet is controlled by a rotary cylinder valve, which ensures high sealing performance.

[0023] 5. The desorption and adsorption processes are integrated into a single design, and the adsorption box is equipped with a heat-insulated outer shell to improve the efficiency of hot air circulation during the desorption process and reduce energy consumption. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a top view of a partial structure of this utility model;

[0026] Figure 3 This is a partial structural side view of the present invention;

[0027] Figure 4 This is a top view of the desorption air inlet equalization plate of this utility model;

[0028] Figure 5 This is a front view of the desorption air inlet equalization plate of this utility model. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] like Figure 1-5As shown, an activated carbon adsorption device for catalytic combustion waste gas includes an adsorption box 1, an adsorption inlet pipe 2, an adsorption outlet pipe 3, an exhaust fan 4, a CO furnace 5, a desorption inlet pipe 6, a desorption return pipe 7, and a desorption fan 8. The adsorption box 1 contains several activated carbon chambers 11 arranged horizontally. Activated carbon 111 is installed in the middle of each activated carbon chamber 11. An adsorption inlet pipe 112 is connected to the upper end of each activated carbon chamber 11, and an adsorption outlet pipe 113 is connected to the lower end. A rotary cylinder valve 114 is installed inside the adsorption outlet pipe 113. A desorption inlet channel 12 is provided on one side of the upper part of the adsorption box 1, and a desorption return channel 13 is provided on one side of the lower part. The activated carbon chambers 11 contain... A desorption air distribution plate 115 is installed at an angle at the upper left and upper right corners, and a desorption air inlet 116 is located on the upper part of the desorption air distribution plate; the desorption air inlet 116 is connected to the desorption air inlet channel 12; a desorption return air distribution plate 117 is installed at an angle at the lower left and lower right corners of the activated carbon chamber 11, and a desorption return air inlet 118 is located below the desorption return air distribution plate 117; the desorption return air inlet 118 is connected to the desorption return air channel 13; the adsorption air inlet pipe 2 is located above the adsorption box 1, and the adsorption air inlet pipe 2 is connected to all adsorption air inlet pipes 112; a first linear cylinder is installed on the adsorption air inlet pipe 2 corresponding to each adsorption air inlet pipe 112. Valve 21; the adsorption outlet pipe 3 is located below the adsorption box 1, and the adsorption outlet pipe 3 is connected to all adsorption outlet pipe ports 113; the exhaust fan 4 is connected to the end of the adsorption outlet pipe 3; the desorption inlet pipe 6 is connected between the CO furnace 5 and the desorption inlet air channel 12; the desorption return air pipe 7 is connected between the CO furnace 5 and the desorption return air channel 13; a second linear cylinder valve 121 is installed at each desorption inlet 116 position in the desorption inlet air channel 12; a third linear cylinder valve 131 is installed at each desorption return air port 118 position in the desorption return air channel 13; the desorption fan 8 is installed on the desorption inlet pipe 6; this design connects the adsorption inlet pipe port 112 with... The adsorption outlet 113 is located on the upper and lower sides of the activated carbon chamber 11. The desorption inlet 116 and desorption return outlet 118 are integrated at the four corners of the activated carbon chamber 11, resulting in a reasonable overall structure and improved space utilization. The desorption inlet channel 12 and desorption return channel 13 are integrated into the adsorption box 1, reducing costs and improving the appearance. The adsorption inlet 112 is controlled by a first linear cylinder valve 21, while the desorption inlet 116 and desorption return outlet 118 are controlled by a second linear cylinder valve and a third linear cylinder valve, respectively. This design offers advantages such as simple structure, convenient installation and maintenance, and low cost. The adsorption outlet 113 is controlled by a rotary cylinder valve 114, ensuring high sealing performance.

[0031] In this design, three activated carbon chambers 11 are provided.

[0032] The desorption air inlet channel 12 is located on the rear side of the upper part of the adsorption box 1; the desorption return air channel 13 is located on the front side of the lower part of the adsorption box 1 to optimize the desorption airflow circulation effect.

[0033] The rotary cylinder valve 114 is a four-link rotary cylinder valve 114, which has higher sealing performance.

[0034] The desorption air inlet equalizer plate 115 has multiple holes 1151; each hole 1151 is equipped with an adjustable air guide valve plate 1152. The equalizer plate and the air guide valve plate 1152 are integral stainless steel structures. The air guide valve plate 1152 is punched and bent from the equalizer plate. According to actual needs, the opening size of the air guide valve plate 1152 can be adjusted by using tools such as clamps to adjust the air volume and direction, so as to make the air distribution more balanced. The structure of the desorption return air equalizer plate 117 is the same as that of the desorption air inlet equalizer plate 115.

[0035] The outer shell of the adsorption box 1 includes an outer stainless steel plate, thermal insulation cotton, and an inner stainless steel plate arranged sequentially from the outside to the inside; the desorption and adsorption are integrated into the design, and the heat-insulating outer shell of the adsorption box 1 is used to improve the hot air circulation efficiency during the desorption process and reduce energy consumption.

[0036] The working principle of this embodiment:

[0037] The first linear cylinder valve 21 controls the opening of the adsorption inlet 112, the rotary cylinder valve 114 controls the opening of the adsorption outlet 113, the second linear cylinder valve 121 controls the closing of the desorption inlet 116, and the third linear cylinder valve 131 controls the closing of the desorption return air outlet 118. The exhaust fan 4 operates, and under its suction force, the waste gas is drawn from the adsorption inlet 2 into the activated carbon chamber 11 and adsorbed by the activated carbon 111. After a certain period of adsorption, the activated carbon 111 reaches saturation and loses its adsorption capacity, requiring desorption and reduction before adsorption can resume. At this point, the desorption valve of one activated carbon chamber 11 (i.e., the second linear cylinder valve 121) closes. The linear cylinder valve 121 and the third linear cylinder valve 131 are opened, the adsorption valve (first linear cylinder valve 21 and rotary cylinder valve 114) is closed, the desorption fan 8 is started, and desorption is carried out. The heating tube of the catalytic combustion furnace heats up to a temperature of 200-300℃. The hot air heated by the CO furnace 5 removes the carbon adsorbed waste gas dust particles in the adsorption box 1, and returns to the CO furnace 5 with the circulating air to be burned, decomposed into carbon dioxide and water vapor. When the desorption process reaches a certain time, the desorption process is completed, and it switches back to the adsorption process. The other saturated activated carbon chamber 11 is in the desorption process in turn, achieving a continuous cycle of adsorption and desorption. During the adsorption process, the adsorption valve is open and the desorption air valve is closed. During the desorption process, the adsorption valve is closed and the desorption valve is open.

[0038] The above description does not limit the technical scope of this invention. Any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this invention shall still fall within the scope of the technical solution of this invention.

Claims

1. An activated carbon adsorption device for catalytic combustion waste gas, characterized in that: The system includes an adsorption box, an adsorption inlet duct, an adsorption outlet duct, an exhaust fan, a CO furnace, a desorption inlet duct, a desorption return duct, and a desorption fan. The adsorption box contains several activated carbon chambers distributed horizontally. An activated carbon layer is installed in the middle of each activated carbon chamber. The upper end of each activated carbon chamber is connected to an adsorption inlet duct, and the lower end is connected to an adsorption outlet duct. A rotary cylinder valve is installed inside the adsorption outlet duct. A desorption inlet airflow channel is located on one side of the upper part of the adsorption box, and a desorption return airflow channel is located on one side of the lower part. Desorption inlet air distribution plates are installed at an angle at the upper left and upper right corners of each activated carbon chamber, along with a desorption inlet located above the desorption inlet air distribution plate. The desorption inlet is connected to the desorption inlet airflow channel. Desorption return air distribution plates are installed at an angle at the lower left and lower right corners of each activated carbon chamber, along with a desorption return airflow channel located above the desorption return airflow channel. The desorption return air inlet is located below the air distribution plate; the desorption return air inlet is connected to the desorption return air channel; the adsorption inlet air pipe is located above the adsorption box and is connected to all adsorption inlet air ports; a first linear cylinder valve is installed on the adsorption inlet air pipe at each adsorption inlet air port position; the adsorption outlet air pipe is located below the adsorption box and is connected to all adsorption outlet air ports; the exhaust fan is connected to the end of the adsorption outlet air pipe; the desorption inlet air pipe is connected between the CO furnace and the desorption inlet air channel; the desorption return air pipe is connected between the CO furnace and the desorption return air channel; a second linear cylinder valve is installed in the desorption inlet air channel at each desorption inlet air port position; a third linear cylinder valve is installed in the desorption return air channel at each desorption return air port position; the desorption fan is installed on the desorption inlet air pipe.

2. The activated carbon adsorption device for catalytic combustion waste gas according to claim 1, characterized in that: The activated carbon chamber is provided in three parts.

3. The activated carbon adsorption device for catalytic combustion waste gas according to claim 1, characterized in that: The desorption air inlet channel is located on the rear side of the upper part of the adsorption box; the desorption return air channel is located on the front side of the lower part of the adsorption box.

4. The activated carbon adsorption device for catalytic combustion waste gas according to claim 1, characterized in that: The rotary cylinder valve is a four-link rotary cylinder valve.

5. The activated carbon adsorption device for catalytic combustion waste gas according to claim 1, characterized in that: The desorption air inlet equalization plate has multiple holes; each hole is equipped with an angle-adjustable air guide valve; the structure of the desorption return air equalization plate is the same as that of the desorption air inlet equalization plate.

6. The activated carbon adsorption device for catalytic combustion waste gas according to claim 1, characterized in that: The outer shell of the adsorption box includes an outer stainless steel plate, thermal insulation cotton, and an inner stainless steel plate arranged sequentially from the outside to the inside.

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