Terminal catcher for residual formaldehyde in tail gas

Abstract

The utility model discloses a terminal catcher for residual formaldehyde in tail gas, which relates to the technical field of formaldehyde production and comprises a tank body, a plurality of filter layers are mounted in the tank body, a liquid outlet is arranged at the bottom of the right side of the tank body, an air pump is arranged at the top of the right side of the tank body, and an output end of the air pump is connected with an exhaust funnel. The waste gas treatment device further comprises a waste heat recovery mechanism and a spraying mechanism, the waste heat recovery mechanism is arranged on the left side of the tank body and used for collecting heat in waste gas, and the spraying mechanism is arranged above the filter layer and used for improving the formaldehyde adsorption effect of the filter layer. The waste heat recovery mechanism is arranged so that heated water can be conveyed into the boiler through the water outlet, other operations of industrial production can be carried out, waste heat recycling is achieved, the spraying mechanism is arranged to drive the spraying pipe and the spraying head to rotate, waste gas is made to make uniform and sufficient contact with the filtering layer and liquid, and therefore soluble tail gas is adsorbed.

Description

Technical Field

[0001] The utility model relates to the technical field of formaldehyde production, in particular to a terminal collector for residual formaldehyde in tail gas. Background Art

[0002] Industrial production of formaldehyde often produces a large amount of exhaust gas, which contains hydrogen, oxygen, and a small amount of carbon monoxide, carbon dioxide, etc. This exhaust gas not only contains a large amount of heat, but also contains some formaldehyde. If it is directly discharged into the atmosphere, it is very easy to cause atmospheric pollution and cause energy loss in the exhaust gas, which is not conducive to energy conservation and environmental protection.

[0003] Based on this, a tail gas residual formaldehyde terminal collector is now provided to eliminate the drawbacks of existing equipment. Utility Model Content

[0004] The utility model aims to provide a terminal collector for residual formaldehyde in tail gas, so as to solve the problem in the background technology that formaldehyde is directly discharged into the atmosphere, which easily causes air pollution and energy loss.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A terminal collector for residual formaldehyde in exhaust gas comprises a tank body, a plurality of filter layers are installed inside the tank body, a drain port is provided at the bottom of the right side of the tank body, an air pump is provided at the top of the right side of the tank body, the output end of the air pump is connected to an exhaust pipe, and further comprises a waste heat recovery mechanism and a spray mechanism, wherein the waste heat recovery mechanism is arranged on the left side of the tank body for collecting and processing heat in the exhaust gas, and the spray mechanism is arranged above the filter layer for improving the adsorption effect of the filter layer on formaldehyde.

[0007] Preferably, the waste heat recovery mechanism includes a box body, a water inlet pipe is provided on the top of the box body, a water outlet is provided on the bottom of the left side of the box body, an air inlet pipe is provided on the top of the left side of the box body, one end of the air inlet pipe extends to the interior of the box body and is connected to a serpentine pipe, the other end of the serpentine pipe is connected to a solenoid valve, and the solenoid valve is connected to the tank body through an aeration pipe.

[0008] Preferably, the spray mechanism includes a liquid distribution box, a motor is fixedly installed on the top of the liquid distribution box, a rotating shaft is fixedly installed on the lower surface of the motor output end, the rotating shaft passes through the liquid distribution box and extends to the inside of the tank body, the rotating shaft is rotatably connected to the tank body, nozzles are staggered on the outside of the rotating shaft, and a plurality of nozzles are evenly distributed on the lower surface of the nozzles.

[0009] Preferably, support seats are symmetrically provided at the bottom of the tank body and the box body.

[0010] Preferably, the filter layer includes a bamboo charcoal filter plate, an activated carbon adsorption layer, and an activated alumina adsorption layer, and the filter layers are all rotatably connected to the rotating shaft.

[0011] Preferably, a thermometer is provided on one side of the serpentine tube close to the solenoid valve, a return pipe is connected to one side of the box body, and the other end of the return pipe is connected to the serpentine tube.

[0012] Preferably, a dispersion disk is connected to one side of the aeration pipe, a plurality of aeration ports are evenly distributed on the upper surface of the dispersion disk, and the dispersion disk is rotatably connected to a rotating shaft.

[0013] Preferably, the rotating shaft and the nozzle are connected via a rotating pipe, and a plurality of liquid inlet holes are provided at positions corresponding to the rotating shaft and the liquid distribution box.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The utility model is provided with a waste heat recovery mechanism, so that the water and the gas inside the serpentine tube can exchange heat, which is convenient for heating the water, so that the heated water can be transported to the boiler through the water outlet, so as to carry out other operations of industrial production, realize the recovery and utilization of waste heat, and has good practicality;

[0016] 2. The utility model is provided with a spray mechanism, which drives the rotating shaft to rotate through the motor, and then drives the nozzle and the nozzle to rotate, so that the exhaust gas is evenly distributed inside the tank, so that the exhaust gas is fully in contact with the filter layer and the adsorption liquid, thereby adsorbing the soluble tail gas and the formaldehyde;

[0017] 3. The utility model is provided with multiple filter layers to increase the contact time between formaldehyde tail gas and adsorption liquid, and an exhaust pipe is provided to discharge the treated gas into the interior thereof, which is convenient for subsequent use or recycling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of one side of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the other side of the utility model.

[0020] Figure 3 It is a structural schematic diagram of the waste heat recovery mechanism of the utility model.

[0021] Figure 4 It is a schematic diagram of the structure inside the tank body of the utility model.

[0022] Figure 5 It is a sectional view of the front view of the utility model.

[0023] Notes on the figure numbers: 101, tank body; 102, filter layer; 103, drain port; 104, air pump; 105, exhaust pipe; 106, support seat; 200, waste heat recovery mechanism; 201, box body; 202, water inlet pipe; 203, air inlet pipe; 204, serpentine pipe; 205, solenoid valve; 206, return pipe; 207, dispersion disk; 208, aeration port; 300, spray mechanism; 301, liquid distribution box; 302, motor; 303, rotating shaft; 304, spray pipe; 305, spray head. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Example 1

[0026] In this embodiment, if Figure 1-Figure 5 As shown, a terminal collector for residual formaldehyde in tail gas includes a tank body 101. An adsorbent liquid is arranged inside the tank body 101 to absorb formaldehyde or other soluble gases. The liquid level of the adsorbent liquid is higher than the height of the aeration port 208. A plurality of filter layers 102 are installed inside the tank body 101. The exhaust gas is filtered through the multiple filter layers 102 to increase the contact time between the exhaust gas and the adsorbent liquid and improve the exhaust gas absorption efficiency. A liquid discharge port 103 is arranged at the bottom of the right side of the tank body 101. An air pump 104 is arranged at the top of the right side of the tank body 101. The output end of the air pump 104 is connected to an exhaust pipe 105. , collect the treated gas for subsequent operation, and also include a waste heat recovery mechanism 200 and a spray mechanism 300. The waste heat recovery mechanism 200 is arranged on the left side of the tank body 101, and is used to collect and process the heat in the exhaust gas. The spray mechanism 300 is arranged above the filter layer 102, and is used to improve the adsorption effect of the filter layer 102 on formaldehyde. Before the tail gas residual formaldehyde terminal collector is used, first check whether the device can be used normally, and then operate the solenoid valve 205, the motor 302, and the air pump 104 through the control panel to put the device into a standby state;

[0027] Among them Figure 2 and Figure 5As shown, the waste heat recovery mechanism 200 includes a box body 201, a control panel is provided on one side of the box body 201, the control panel is electrically connected to the solenoid valve 205 and the motor 302, a water inlet pipe 202 is provided on the top of the box body 201, and a water outlet is provided on the bottom of the left side of the box body 201. A large amount of water is injected into the box body 201 through the water inlet pipe 202, so that the water and the gas inside the serpentine pipe 204 are heat-exchanged, which is convenient for heating the water, so that the heated water can be transported to the boiler through the water outlet for steam heating operation. An air inlet pipe 203 is provided at the top of the left side of the tank 201. One end of the air inlet pipe 203 extends to the inside of the tank 201 and is connected to a serpentine pipe 204. The serpentine pipe 204 is made of a metal material with good thermal conductivity. The serpentine pipe 204 is used to allow the exhaust gas to pass a longer distance, so that the exhaust gas waste heat is more thoroughly utilized. The other end of the serpentine pipe 204 is connected to a solenoid valve 205. The solenoid valve 205 is connected to the tank 101 through an aeration pipe, which is convenient for waste heat recovery operation and for conveying the gas after heat absorption to the inside of the tank 101.

[0028] Among them Figure 4 and Figure 5 As shown, the spray mechanism 300 includes a liquid distribution box 301, a motor 302 is fixedly installed on the top of the liquid distribution box 301, a rotating shaft 303 is fixedly installed on the lower surface of the output end of the motor 302, the rotating shaft 303 penetrates the liquid distribution box 301 and extends to the inside of the tank body 101, the rotating shaft 303 is rotatably connected to the tank body 101, and nozzles 304 are staggeredly arranged on the outside of the rotating shaft 303, and multiple groups of nozzles 304 are arranged in a cross shape. A number of nozzles 305 are evenly distributed on the lower surface of the nozzle 304. By starting the motor 302, the rotating shaft 303 is driven to rotate, and then the nozzle 304 is rotated. The multiple nozzles 305 facilitate the use of the tail gas residual formaldehyde terminal collector, achieve a uniform adsorption effect, and improve the overall practicality of the device;

[0029] Among them Figure 1-Figure 5 As shown, the bottom of the tank 101 and the box 201 are symmetrically provided with a support seat 106, and the support seat 106 plays the role of supporting the tail gas residual formaldehyde terminal collector, which is easy to move;

[0030] Among them Figure 4 and Figure 5 As shown, the filter layer 102 includes a bamboo charcoal filter plate, an activated carbon adsorption layer, and an activated alumina adsorption layer. The filter layers 102 are rotatably connected to the rotating shaft 303. The exhaust gas is filtered and adsorbed through the multiple filter layers 102, thereby increasing the contact time between formaldehyde and the adsorption liquid, thereby improving the formaldehyde capture efficiency.

[0031] Among them Figure 1 and Figure 3As shown, a thermometer is provided on one side of the serpentine tube 204 close to the solenoid valve 205, and a return pipe 206 is connected to one side of the box body 201, and the other end of the return pipe 206 is connected to the serpentine tube 204, so as to detect the gas temperature inside the serpentine tube 204. When the temperature is still at a relatively high temperature, the gas is allowed to pass through the return pipe 206 for another heat exchange operation;

[0032] Among them Figure 4 and Figure 5 As shown, the rotating shaft 303 and the nozzle 304 are connected through a rotating tube, and a plurality of liquid inlet holes are provided at positions corresponding to the rotating shaft 303 and the liquid distribution box 301, through which the liquid enters the rotating tube, and then passes through the nozzle 304 to reach the nozzle 305, thereby ensuring the normal operation of the device;

[0033] Example 2

[0034] The difference from Example 1 is that Figure 4 As shown, a dispersion disk 207 is connected to one side of the aeration pipe. The dispersion disk 207 is in the liquid to increase the contact time and area between the exhaust gas and the liquid. A plurality of aeration ports 208 are evenly distributed on the upper surface of the dispersion disk 207. The dispersion disk 207 is rotatably connected to the rotating shaft 303. A one-way valve is provided at the aeration port 208 to prevent the liquid from entering the dispersion disk 207.

[0035] When in use, before the exhaust gas residual formaldehyde terminal collector is used, the motor 302 is started first, and the motor 302 drives the rotating shaft 303 to rotate, and then drives the spray mechanism 300 to rotate, and a large amount of water is injected into the box body 201 through the water inlet pipe 202, so that the water submerges the top serpentine tube 204, and then the exhaust gas is transported to the inside of the serpentine tube 204 through the air inlet pipe 203, so that the water and the gas inside the serpentine tube 204 are heat exchanged to achieve the effect of waste heat recovery. With the cooperation of the spray mechanism 300, the exhaust gas with reduced heat can fully contact with the spray liquid, thereby increasing the adsorption effect.

[0036] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A tail gas residual formaldehyde terminal collector, comprising a tank body (101), a plurality of filter layers (102) are installed inside the tank body (101), a liquid discharge port (103) is provided at the bottom of the right side of the tank body (101), an air pump (104) is provided at the top of the right side of the tank body (101), and an output end of the air pump (104) is connected to an exhaust pipe (105); It is characterized in that It also includes a waste heat recovery mechanism (200), which is arranged on the left side of the tank body (101) and is used to collect and process the heat in the exhaust gas; A spray mechanism (300) is arranged above the filter layer (102) and is used to improve the adsorption effect of the filter layer (102) on formaldehyde.

2. The tail gas residual formaldehyde terminal collector according to claim 1, characterized in that: The waste heat recovery mechanism (200) comprises a box body (201), a water inlet pipe (202) is arranged at the top of the box body (201), a water outlet is arranged at the bottom of the left side of the box body (201), an air inlet pipe (203) is arranged at the top of the left side of the box body (201), one end of the air inlet pipe (203) extends into the interior of the box body (201) and is connected to a serpentine pipe (204), the other end of the serpentine pipe (204) is connected to a solenoid valve (205), and the solenoid valve (205) is connected to the tank body (101) through an aeration pipe.

3. The tail gas residual formaldehyde terminal collector according to claim 1, characterized in that: The spray mechanism (300) comprises a liquid distribution box (301), a motor (302) is fixedly mounted on the top of the liquid distribution box (301), a rotating shaft (303) is fixedly mounted on the lower surface of the output end of the motor (302), the rotating shaft (303) passes through the liquid distribution box (301) and extends to the inside of the tank body (101), the rotating shaft (303) is rotatably connected to the tank body (101), nozzles (304) are arranged in a staggered manner on the outer side of the rotating shaft (303), and a plurality of nozzles (305) are evenly distributed on the lower surface of the nozzles (304).

4. The tail gas residual formaldehyde terminal collector according to claim 1, characterized in that: Support seats (106) are symmetrically provided at the bottoms of the tank body (101) and the box body (201).

5. The tail gas residual formaldehyde terminal collector according to claim 1, characterized in that: The filter layer (102) comprises a bamboo charcoal filter plate, an activated carbon adsorption layer, and an activated alumina adsorption layer, and the filter layer (102) is rotatably connected to the rotating shaft (303).

6. The tail gas residual formaldehyde terminal collector according to claim 2, characterized in that: A thermometer is provided on one side of the serpentine tube (204) close to the solenoid valve (205), and a return pipe (206) is connected to one side of the box body (201), and the other end of the return pipe (206) is connected to the serpentine tube (204).

7. The tail gas residual formaldehyde terminal collector according to claim 2, characterized in that: A dispersion disk (207) is connected to one side of the aeration pipe. A plurality of aeration ports (208) are evenly distributed on the upper surface of the dispersion disk (207). The dispersion disk (207) is rotatably connected to a rotating shaft (303).

8. The tail gas residual formaldehyde terminal collector according to claim 3, characterized in that: The rotating shaft (303) and the spray pipe (304) are connected via a rotating pipe, and a plurality of liquid inlet holes are provided at positions corresponding to the rotating shaft (303) and the liquid distribution box (301).

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