Industrial formaldehyde production tail gas treatment equipment

Abstract

This utility model relates to the field of industrial formaldehyde production technology and discloses an industrial formaldehyde production tail gas treatment device, including a water storage tank, a reaction vessel fixedly connected inside the water storage tank, a drain pipe fixedly connected to the bottom of the reaction vessel, an air inlet pipe fixedly connected to the right side of the water storage tank, a spiral heat exchange tube fixedly connected to the left end of the air inlet pipe, a gas delivery pipe fixedly connected to the top rear side of the spiral heat exchange tube, an exhaust pipe fixedly connected to the top left side of the reaction vessel, an electric telescopic rod fixedly connected to the top of the reaction vessel, a stirring plate fixedly connected to the bottom of the electric telescopic rod, and through holes on the surface of the stirring plate. By setting up the water storage tank, air inlet pipe, gas delivery pipe, etc., in conjunction with the spiral heat exchange tube, high-temperature tail gas can be introduced into the spiral heat exchange tube through the air inlet pipe. The high-temperature tail gas exchanges heat with the water in the water storage tank through the spiral heat exchange tube, thereby recovering and utilizing the high temperature of the tail gas, saving resources and facilitating use.

Description

Technical Field

[0001] This utility model relates to the field of industrial formaldehyde production technology, specifically to an industrial formaldehyde production exhaust gas treatment device. Background Technology

[0002] Currently, industrially produced formaldehyde is mainly produced using methanol as raw material through the methanol-air oxidation method in the formaldehyde production room. The formaldehyde produced by the main reaction is collected in the formaldehyde production room, and the waste gas (tail gas) is discharged from the formaldehyde production room. The discharged waste gas contains some uncollected formaldehyde and hydrogen produced in the production process.

[0003] The exhaust gas produced during industrial formaldehyde production is at high temperatures. However, while existing industrial formaldehyde production exhaust gas treatment equipment can treat the exhaust gas, it cannot recycle and reuse the high temperature of the exhaust gas, resulting in resource waste and being detrimental to environmental protection. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an industrial formaldehyde production exhaust gas treatment device to solve the problem mentioned in the background art that the exhaust gas generated during the industrial formaldehyde production process has a high temperature. However, although existing industrial formaldehyde production exhaust gas treatment devices can treat the exhaust gas, they cannot recycle and utilize the high temperature of the exhaust gas, resulting in resource waste and environmental problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an industrial formaldehyde production tail gas treatment device, comprising a water storage tank, a support leg fixedly connected to the bottom of the water storage tank, a water inlet fixedly connected to the front top of the water storage tank, a water outlet fixedly connected to the left side of the water storage tank, a reaction vessel fixedly connected inside the water storage tank, a drain pipe fixedly connected to the bottom of the reaction vessel, a solenoid valve provided on the lower side of the drain pipe, an air inlet pipe fixedly connected to the right side of the water storage tank, a spiral heat exchange tube fixedly connected to the left end of the air inlet pipe, a gas delivery pipe fixedly connected to the rear top of the spiral heat exchange tube, an exhaust pipe fixedly connected to the left top of the reaction vessel, a filling port fixedly connected to the right top of the reaction vessel, an electric telescopic rod fixedly connected to the top of the reaction vessel, a stirring plate fixedly connected to the bottom of the electric telescopic rod, an installation hole provided on the rear side of the stirring plate, and a through hole provided on the surface of the stirring plate.

[0006] Preferably, the left end of the air inlet pipe passes through the right wall of the water storage tank and extends to the lower interior of the water storage tank.

[0007] Preferably, the top front side of the gas supply pipe penetrates the top wall of the reactor and extends to the inner bottom side of the reactor through the mounting hole.

[0008] Preferably, the drain pipe passes through the bottom of the water storage tank and extends to the outer side of the bottom of the water storage tank.

[0009] By adopting the above technical solution, and by setting up a water storage tank, an air inlet pipe, an air delivery pipe, etc. in conjunction with a spiral heat exchange tube, high-temperature exhaust gas can be introduced into the spiral heat exchange tube through the air inlet pipe. The high-temperature exhaust gas exchanges heat with the water in the water storage tank through the spiral heat exchange tube, thereby recovering and utilizing the high temperature of the exhaust gas, saving resources and facilitating use.

[0010] Preferably, the diameter of the reactor is smaller than the diameter of the water storage tank, and there is a gap between the bottom of the reactor and the inner bottom side of the water storage tank.

[0011] Preferably, there are several through holes, which are arranged in a ring array on the surface of the stirring plate, and the spacing between the through holes is the same.

[0012] By adopting the above technical solution, and by setting up a stirring plate, through holes, etc., in conjunction with an electric telescopic rod, the stirring plate can be moved up and down in the reaction vessel by controlling the extension and retraction of the electric telescopic rod, thereby continuously stirring the formaldehyde solvent in the reaction vessel, so as to fully mix it with the tail gas, thereby improving the dissolution efficiency of the tail gas and improving the working efficiency.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This industrial formaldehyde production exhaust gas treatment equipment, by setting up a water storage tank, an air inlet pipe, an air delivery pipe, etc., in conjunction with a spiral heat exchange tube, allows high-temperature exhaust gas to be introduced into the spiral heat exchange tube through the air inlet pipe. The high-temperature exhaust gas exchanges heat with the water in the water storage tank through the spiral heat exchange tube, thereby recovering and utilizing the high temperature of the exhaust gas, saving resources and facilitating use.

[0015] 2. This industrial formaldehyde production tail gas treatment equipment, by setting up a stirring plate, through holes, etc., and using an electric telescopic rod, can drive the stirring plate to move up and down in the reaction vessel by controlling the extension and retraction of the electric telescopic rod, thereby continuously stirring the formaldehyde solvent in the reaction vessel, so as to fully mix it with the tail gas, thereby improving the dissolution efficiency of the tail gas and improving the working efficiency. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of this utility model from below;

[0019] Figure 4This is a schematic diagram of the cross-sectional structure of the water storage tank of this utility model.

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the present invention.

[0021] Figure 6 This is a schematic diagram of the stirring plate structure of this utility model.

[0022] In the diagram: 1. Water storage tank; 2. Support leg; 3. Drain pipe; 4. Solenoid valve; 5. Water outlet tap; 6. Reactor; 7. Air inlet pipe; 8. Spiral heat exchanger tube; 9. Gas delivery pipe; 10. Exhaust pipe; 11. Filling port; 12. Water inlet; 13. Electric telescopic rod; 14. Stirring plate; 15. Through hole; 16. Mounting hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1:

[0025] Referring to Figures 1-5, an industrial formaldehyde production exhaust gas treatment device includes a water storage tank 1. A support leg 2 is fixedly connected to the bottom of the water storage tank 1. A water inlet 12 is fixedly connected to the front top of the water storage tank 1. A water outlet 5 is fixedly connected to the left side of the water storage tank 1. A reaction vessel 6 is fixedly connected inside the water storage tank 1. A drain pipe 3 is fixedly connected to the bottom of the reaction vessel 6. The drain pipe 3 passes through the bottom of the water storage tank 1 and extends to the outer side of the bottom of the water storage tank 1. A solenoid valve 4 is installed on the lower side of the drain pipe 3. An air inlet pipe 7 is fixedly connected to the right side of the water storage tank 1. A spiral heat exchanger tube 8 is fixedly connected to the left end of the air inlet pipe 7. A gas supply pipe 9 is fixedly connected to the top rear side of the heat pipe 8. The top front side of the gas supply pipe 9 passes through the top wall of the reactor 6 and extends to the bottom inside of the reactor 6 through the mounting hole 16. An exhaust pipe 10 is fixedly connected to the top left side of the reactor 6. The left end of the gas inlet pipe 7 passes through the right wall of the water storage tank 1 and extends to the bottom inside of the water storage tank 1. A filling port 11 is fixedly connected to the top right side of the reactor 6. An electric telescopic rod 13 is fixedly connected to the top of the reactor 6. A stirring plate 14 is fixedly connected to the bottom of the electric telescopic rod 13. A mounting hole 16 is opened on the rear side of the stirring plate 14. A through hole 15 is opened on the surface of the stirring plate 14.

[0026] Working principle: During use, the operator first injects formaldehyde solvent into the reactor 6 through the filling port 11, and then injects cold water into the water storage tank 1 through the water inlet 12. At this time, the operator introduces the high-temperature exhaust gas generated during industrial formaldehyde production into the air inlet pipe 7. The exhaust gas will then enter the spiral heat exchange tube 8 through the air inlet pipe 7. The spiral heat exchange tube 8 is immersed in the cold water inside the water storage tank 1. The high-temperature exhaust gas will exchange heat with the cold water in the water storage tank 1 through the spiral heat exchange tube 8, thereby recovering and utilizing the high temperature in the exhaust gas. After heat exchange, the exhaust gas will enter the reactor 6 through the gas delivery pipe 9, where it will react with the formaldehyde solvent inside the reactor 6 to dissolve and treat the exhaust gas. The treated exhaust gas will then be discharged through the exhaust pipe 10.

[0027] Compared with related technologies, the industrial formaldehyde production tail gas treatment equipment provided by this utility model has the following beneficial effects: by setting up a water storage tank 1, an air inlet pipe 7, an air delivery pipe 9, etc., in conjunction with a spiral heat exchange tube 8, high-temperature tail gas can be introduced into the spiral heat exchange tube 8 through the air inlet pipe 7. The high-temperature tail gas exchanges heat with the water in the water storage tank 1 through the spiral heat exchange tube 8, thereby recovering and utilizing the high temperature of the tail gas, saving resources and facilitating use.

[0028] Example 2:

[0029] Referring to Figures 1-6, a support leg 2 is fixedly connected to the bottom of the water storage tank 1. A reaction vessel 6 is fixedly connected inside the water storage tank 1. The diameter of the reaction vessel 6 is smaller than the diameter of the water storage tank 1, and there is a gap between the bottom of the reaction vessel 6 and the bottom of the inside of the water storage tank 1. An electric telescopic rod 13 is fixedly connected to the top of the reaction vessel 6. A stirring plate 14 is fixedly connected to the bottom of the electric telescopic rod 13. An installation hole 16 is opened on the rear side of the stirring plate 14. Through holes 15 are opened on the surface of the stirring plate 14. There are several through holes 15, which are arranged in a ring array on the surface of the stirring plate 14, and the spacing between the several through holes 15 is the same.

[0030] Working principle: When the exhaust gas is sent into the reaction vessel 6 through the gas supply pipe 9, the operator can start the electric telescopic rod 13. The electric telescopic rod 13 continuously extends and retracts, which drives the stirring plate 14 to move up and down in the reaction vessel 6, thereby continuously stirring the formaldehyde solvent in the reaction vessel 6, so that it is fully mixed with the exhaust gas, thereby improving the dissolution efficiency of the exhaust gas and improving the work efficiency.

[0031] Compared with related technologies, the industrial formaldehyde production tail gas treatment equipment provided by this utility model has the following beneficial effects: by setting up a stirring plate 14, through holes 15, etc., in conjunction with an electric telescopic rod 13, the stirring plate 14 can be moved up and down in the reaction vessel 6 by controlling the extension and retraction of the electric telescopic rod 13, thereby continuously stirring the formaldehyde solvent in the reaction vessel 6, so as to fully mix it with the tail gas, thereby improving the dissolution efficiency of the tail gas and improving the working efficiency.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An industrial formaldehyde production off-gas treatment plant comprising a water reservoir (1), characterized in that: The bottom of the water storage tank (1) is fixedly connected to a support leg (2). The top front of the water storage tank (1) is fixedly connected to a water inlet (12). The left side of the water storage tank (1) is fixedly connected to a water outlet (5). The inside of the water storage tank (1) is fixedly connected to a reaction vessel (6). The bottom of the reaction vessel (6) is fixedly connected to a drain pipe (3). A solenoid valve (4) is installed on the lower side of the drain pipe (3). The right side of the water storage tank (1) is fixedly connected to an air inlet pipe (7). The left end of the air inlet pipe (7) is fixedly connected to a spiral valve. A heat pipe (8) is fixedly connected to a gas supply pipe (9) at the top rear side. An exhaust pipe (10) is fixedly connected to the top left side of the reactor (6). A filling port (11) is fixedly connected to the top right side of the reactor (6). An electric telescopic rod (13) is fixedly connected to the top of the reactor (6). A stirring plate (14) is fixedly connected to the bottom of the electric telescopic rod (13). An installation hole (16) is opened on the rear side of the stirring plate (14). A through hole (15) is opened on the surface of the stirring plate (14).

2. The industrial formaldehyde production tail gas treatment equipment according to claim 1, characterized in that: The left end of the air inlet pipe (7) passes through the right wall of the water storage tank (1) and extends to the lower inside of the water storage tank (1).

3. The industrial formaldehyde production tail gas treatment equipment according to claim 1, characterized in that: The top front side of the gas supply pipe (9) penetrates the top wall of the reactor (6) and extends to the inner bottom side of the reactor (6) through the mounting hole (16).

4. The industrial formaldehyde production tail gas treatment equipment according to claim 1, characterized in that: The drain pipe (3) passes through the bottom of the water storage tank (1) and extends to the outside of the bottom of the water storage tank (1).

5. The industrial formaldehyde production tail gas treatment equipment according to claim 1, characterized in that: The diameter of the reactor (6) is smaller than the diameter of the water storage tank (1), and there is a gap between the bottom of the reactor (6) and the bottom of the water storage tank (1).

6. The industrial formaldehyde production tail gas treatment equipment according to claim 1, characterized in that: The number of through holes (15) is several, and the several through holes (15) are distributed in a ring array on the surface of the stirring plate (14), and the spacing between the several through holes (15) is the same.

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