Waste gas treatment equipment in production of menthanediol

Abstract

The utility model relates to waste gas treatment equipment in production of menthanediol, which belongs to the field of waste gas treatment and comprises a mounting seat, a heat treatment mechanism for combustion and heat cycle of waste gas is arranged on the left side of the upper surface of the mounting seat, and a purification mechanism for multi-effect filtration and purification of the waste gas is arranged on the right side of the upper surface of the mounting seat. According to the waste gas treatment equipment in the production of the menthanediol, the heat treatment mechanism, the igniter and the ignition spray head are arranged to cooperatively work and used for igniting waste gas in the combustion furnace and starting the combustion process, a first fan extracts the waste gas from the combustion furnace through an exhaust pipe, and a gas supply pipe sends hot gas generated by combustion into a heat circulation system; waste gas generated after heating combustion enters the heat circulation pipe, the heat circulation pipe can be used for recycling and recycling waste heat generated by combustion to heat the steam boiler, the energy utilization efficiency is improved, steam generated by the steam boiler can be used for other industrial processes, and multi-stage utilization of heat energy is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to waste gas treatment equipment in the production of menthanediol. Background Art

[0002] Menthyl alcohol, also known as 2-hydroxy-α,α,4-trimethylcyclohexylmethanol, is a chemical substance with a molecular formula of C10H20O2 and a molecular weight of 172.2646. Menthyl alcohol is widely used in industry, especially in personal care products. Due to its good water solubility and viscosity, it is often used as a solvent. Menthyl alcohol is usually produced by chemical synthesis methods, such as catalytic oxidation of ethylene glycol, oxidation reaction with oxygen or oxidants (such as nitric acid), and purification.

[0003] For example, a waste gas treatment device for ethylene glycol production disclosed in Chinese patent announcement number (CN208694712U) includes a base, a working box and a mounting base; a dust removal tank and a dust removal net can remove dust and solid particles in the waste gas, and the treated waste gas enters the catalyst, and then enters the distillation tank, and finally the ethylene glycol liquid is stored in the storage tank. In order to prevent ethylene glycol from condensing into liquid and remaining in the pipeline during the entire treatment process, thereby blocking the pipeline, a heating belt is wrapped on the outside of the first pipeline, the second pipeline and the third pipeline. The catalyst in the catalyst has a high probability of contacting with the gas to be treated, and the efficiency of the catalytic reaction is improved. The device treats the waste gas and recovers ethylene glycol with high industrial application value in the waste gas. On the one hand, it protects the environment, and on the other hand, it effectively recovers ethylene glycol for use in other industrial production; it can greatly improve the waste gas treatment efficiency and the recovery rate of ethylene glycol.

[0004] However, the waste gas treatment device disclosed in the above patent still has the problem of poor waste gas treatment, filtration and purification effect. For example, in the above patent, dust and solid particles in the waste gas can be removed by dust removal tanks and dust removal nets, while the waste gas generated during solution production contains mixed impurities, some of which contain harmful substances that require secondary treatment before condensation treatment. The above method has a poor waste gas treatment effect and affects environmental safety. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a waste gas treatment equipment in the production of menthyl glycol, which has the advantages of good waste gas treatment filtering and purification effects, and solves the problem of poor waste gas treatment filtering and purification effects in the prior art.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solutions: an exhaust gas treatment device in the production of menthyl glycol, comprising a mounting seat, a heat treatment mechanism for burning and heat-circulating the exhaust gas is provided on the left side of the upper surface of the mounting seat, and a purification mechanism for multi-effect filtering and purifying the exhaust gas is provided on the right side of the upper surface of the mounting seat;

[0007] The heat treatment mechanism includes a combustion furnace, an igniter, two ignition nozzles, a first fan, an exhaust pipe, an air supply pipe and a heat circulation component. The combustion furnace is fixed to the left side of the upper surface of the mounting base, and the igniter is fixed to the right side of the combustion furnace. One end of the two ignition nozzles is connected to the igniter, and the other ends of the two ignition nozzles pass through and extend to the inner wall of the combustion furnace. The first fan is fixed to the upper surface of the combustion furnace, the exhaust pipe is connected to the air inlet end of the first fan, and the air supply pipe is connected to the air outlet end of the first fan. The heat circulation component is arranged in the middle of the upper surface of the mounting base to recover and circulate the residual heat after the exhaust gas is burned.

[0008] Furthermore, the heat circulation component includes a processing box, a steam boiler and a heat circulation pipe. The processing box is fixed to the middle of the upper surface of the mounting seat, the steam boiler is fixed to the inner bottom wall of the processing box, the heat circulation pipe is wrapped around the outside of the steam boiler, and the top end of the heat circulation pipe is connected to the bottom end of the air supply pipe.

[0009] Furthermore, an air guide pipe is fixed to the left side of the combustion furnace, and the bottom end of the air extraction pipe penetrates and extends to the inner top wall of the combustion furnace.

[0010] Furthermore, the upper surface of the steam boiler is connected to a steam exhaust pipe.

[0011] Furthermore, the purification mechanism includes a purification box, a sedimentation tank, a filter layer, a photolysis layer and a plurality of UV lamp tubes. The purification box is fixed to the right side of the upper surface of the mounting base, the sedimentation tank is fixed to the inner bottom wall of the purification box, the filter layer is fixed to the inner wall of the purification box, the photolysis layer is fixed to the inner wall of the purification box, and the plurality of UV lamp tubes are respectively fixed on the upper and lower sides of the photolysis layer.

[0012] Furthermore, the interior of the sedimentation tank is filled with a neutralizing liquid, the outside of the sedimentation tank is connected to a water pipe, and a control valve is fixed to the outside of the water pipe.

[0013] Furthermore, the filter layer is an activated carbon layer, the bottom end of the heat circulation pipe penetrates and extends to the inner bottom wall of the sedimentation tank, and the upper surface of the purification box is connected to a discharge pipe.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. The waste gas treatment equipment in the production of menthanediol is provided with a heat treatment mechanism. The igniter and the ignition nozzle work together to ignite the waste gas in the combustion furnace and start the combustion process. The first fan extracts the waste gas from the combustion furnace through the exhaust pipe, and the air supply pipe sends the hot gas generated by the combustion into the heat circulation system. The heated waste gas after combustion enters the heat circulation pipe, and the heat circulation pipe can be used to recover and recycle the waste heat generated by the combustion to heat the steam boiler, thereby improving the energy utilization efficiency. The steam generated by the steam boiler can be used for other industrial processes to realize the multi-stage utilization of thermal energy.

[0016] 2. The waste gas treatment equipment in the production of menthanediol is provided with a purification mechanism. The purification box is the first station for the waste gas to enter the purification mechanism, and the waste gas from the heat treatment mechanism is collected. The sedimentation tank is filled with a neutralizing liquid to settle large particle pollutants in the waste gas. The filter layer is usually composed of activated carbon to adsorb harmful gases and odors in the waste gas. The photolysis layer uses ultraviolet light generated by UV lamps to decompose harmful substances in the waste gas. The UV lamps provide ultraviolet light energy to promote the photolysis reaction of harmful substances in the waste gas. The bottom end of the heat circulation pipe runs through the sedimentation tank. After the waste heat of the waste gas is guided out, the waste gas is introduced into the sedimentation tank for waste gas purification. Through the coordinated work of the heat treatment mechanism and the purification mechanism, the waste gas treatment equipment can effectively burn and purify the waste gas generated in the production process of menthanediol and reduce the impact on the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the heat treatment mechanism of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the purification device of the utility model;

[0020] Figure 4 It is a partial schematic diagram of the purification mechanism of the utility model.

[0021] In the figure: 1 mounting base, 2 heat treatment mechanism, 21 combustion furnace, 22 igniter, 23 ignition nozzle, 24 first fan, 25 exhaust pipe, 26 air supply pipe, 27 heat circulation component, 271 treatment box, 272 steam boiler, 273 heat circulation pipe, 3 purification mechanism, 31 purification box, 32 sedimentation tank, 33 filter layer, 34 photolysis layer, 35 UV lamp. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1 In this embodiment, a waste gas treatment device for the production of menthanediol includes a mounting seat 1, a heat treatment mechanism 2 for burning and heat recycling the waste gas is provided on the left side of the upper surface of the mounting seat 1, and a purification mechanism 3 for multi-effect filtering and purifying the waste gas is provided on the right side of the upper surface of the mounting seat 1.

[0024] See also Figure 2 In order to perform heat treatment on the waste gas, the heat treatment mechanism 2 in this embodiment includes a combustion furnace 21, an igniter 22, two ignition nozzles 23, a first fan 24, an exhaust pipe 25, an air supply pipe 26 and a heat circulation member 27. The combustion furnace 21 is fixed to the left side of the upper surface of the mounting base 1. The combustion furnace 21 is used to burn the combustible substances in the waste gas and convert chemical energy into thermal energy. The igniter 22 is fixed to the right side of the combustion furnace 21. One end of the two ignition nozzles 23 are connected to the igniter 22, and the other ends of the two ignition nozzles 23 penetrate and extend to the combustion furnace 2. 1, the igniter 22 and the ignition nozzle 23 work together to ignite the exhaust gas in the combustion furnace 21 and start the combustion process. The first fan 24 is fixed to the upper surface of the combustion furnace 21, the exhaust pipe 25 is connected to the air inlet end of the first fan 24, and the air supply pipe 26 is connected to the air outlet end of the first fan 24. The first fan 24 extracts the exhaust gas from the combustion furnace 21 through the exhaust pipe 25, and the air supply pipe 26 sends the hot gas generated by the combustion into the heat circulation system. The heat circulation component 27 is arranged in the middle of the upper surface of the mounting base 1 to recover and circulate the residual heat after the exhaust gas is burned.

[0025] The heat circulation component 27 includes a treatment box 271, a steam boiler 272 and a heat circulation pipe 273. The treatment box 271 is fixed to the middle of the upper surface of the mounting seat 1, the steam boiler 272 is fixed to the inner bottom wall of the treatment box 271, the heat circulation pipe 273 is wound around the outside of the steam boiler 272, and the top of the heat circulation pipe 273 is connected to the bottom end of the air supply pipe 26. The heat circulation component 27 includes a treatment box 271, a steam boiler 272 and a heat circulation pipe 273. The exhaust gas after heating and combustion enters the heat circulation pipe 273, and the heat circulation pipe 273 can be used to recover and recycle the waste heat generated by combustion to heat the steam boiler 272, thereby improving energy utilization efficiency.

[0026] In this embodiment, an air duct is fixed on the left side of the combustion furnace 21, the bottom end of the exhaust pipe 25 passes through and extends to the inner top wall of the combustion furnace 21, and the upper surface of the steam boiler 272 is connected to a steam exhaust pipe. The air duct is used to guide the exhaust gas or hot gas generated by combustion into the combustion furnace 21 for combustion. The steam generated by the steam boiler 272 can be used in other industrial processes to achieve multi-stage utilization of thermal energy.

[0027] See also Figure 3-4 In order to purify the waste gas after heat treatment for discharge, the purification mechanism 3 in this embodiment includes a purification box 31, a sedimentation tank 32, a filter layer 33, a photolysis layer 34 and a plurality of UV lamps 35. The purification box 31 is fixed to the right side of the upper surface of the mounting base 1. The purification box 31 serves as the first station for waste gas to enter the purification mechanism 3 and collects waste gas from the heat treatment mechanism 2. The sedimentation tank 32 is fixed to the inner bottom wall of the purification box 31, the filter layer 33 is fixed to the inner wall of the purification box 31, the photolysis layer 34 is fixed to the inner wall of the purification box 31, and a plurality of UV lamps 35 are respectively fixed on the upper and lower sides of the photolysis layer 34. The photolysis layer 34 uses the ultraviolet light generated by the UV lamps 35 to decompose harmful substances in the waste gas. The UV lamps 35 provide ultraviolet light energy to promote the photolysis reaction of harmful substances in the waste gas.

[0028] In this embodiment, the interior of the sedimentation tank 32 is filled with neutralizing liquid, the outside of the sedimentation tank 32 is connected to a water pipe, and a control valve is fixed on the outside of the water pipe. The interior of the sedimentation tank 32 is filled with neutralizing liquid for settling large particle pollutants in the exhaust gas, and the amount of neutralizing liquid is adjusted by the water pipe and the control valve. The filter layer 33 is an activated carbon layer, and the filter layer 33 is usually composed of activated carbon for adsorbing harmful gases and odors in the exhaust gas. The bottom end of the heat circulation pipe 273 passes through and extends to the inner bottom wall of the sedimentation tank 32. The upper surface of the purification box 31 is connected to a discharge pipe. The bottom end of the heat circulation pipe 273 passes through the sedimentation tank 32. After the waste heat of the exhaust gas is guided out, the exhaust gas is introduced into the sedimentation tank 32 for exhaust gas purification, and then discharged to the outside through the discharge pipe.

[0029] The working principle of the above embodiment is:

[0030] (1) When the waste gas is used for heat treatment, the combustion furnace 21 is used to burn the combustible substances in the waste gas and convert chemical energy into thermal energy. The igniter 22 and the ignition nozzle 23 work together to ignite the waste gas in the combustion furnace 21 and start the combustion process. The first fan 24 extracts the waste gas from the combustion furnace 21 through the exhaust pipe 25, and the air supply pipe 26 sends the hot gas generated by the combustion into the heat circulation system. The heat circulation component 27 includes a treatment box 271, a steam boiler 272 and a heat circulation pipe 273. The heated waste gas after combustion enters the heat circulation pipe 273, and the heat circulation pipe 273 can be used to recover and recycle the waste heat generated by combustion to heat the steam boiler 272, thereby improving energy utilization efficiency. The air guide pipe is used to guide the waste gas or hot gas generated by combustion into the combustion furnace 21 for combustion. The steam generated by the steam boiler 272 can be used in other industrial processes to achieve multi-stage utilization of thermal energy.

[0031] (2) When the waste gas after heat treatment is purified and discharged, the purification box 31 serves as the first station for the waste gas to enter the purification mechanism 3, collects the waste gas from the heat treatment mechanism 2, and is filled with a neutralizing liquid inside the sedimentation tank 32, which is used to settle large particle pollutants in the waste gas, and the amount of the neutralizing liquid is adjusted by a water pipe and a control valve. The filter layer 33 is usually composed of activated carbon, which is used to adsorb harmful gases and odors in the waste gas. The photolysis layer 34 uses the ultraviolet light generated by the UV lamp 35 to decompose the harmful substances in the waste gas. The UV lamp 35 provides ultraviolet light energy to promote the photolysis reaction of harmful substances in the waste gas. The bottom end of the heat circulation pipe 273 passes through the sedimentation tank 32. After the waste heat of the waste gas is guided out, the waste gas is introduced into the sedimentation tank 32 for waste gas purification, and then discharged to the outside through the discharge pipe.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] The standard parts used in this application document can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented through simple programming by technicians in this field, which is common knowledge in this field. Therefore, this application document will no longer explain the control method and circuit connection in detail.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A waste gas treatment device in the production of menthanediol, comprising a mounting seat (1), characterized in that: A heat treatment mechanism (2) for burning and heat-circulating the waste gas is provided on the left side of the upper surface of the mounting seat (1), and a purification mechanism (3) for performing multi-effect filtering and purification on the waste gas is provided on the right side of the upper surface of the mounting seat (1); The heat treatment mechanism (2) comprises a combustion furnace (21), an igniter (22), two ignition nozzles (23), a first fan (24), an exhaust pipe (25), an air supply pipe (26) and a heat circulation component (27); the combustion furnace (21) is fixed to the left side of the upper surface of the mounting seat (1); the igniter (22) is fixed to the right side of the combustion furnace (21); one end of the two ignition nozzles (23) are connected to the igniter (22); and the other ends of the two ignition nozzles (23) pass through and extend to the inner wall of the combustion furnace (21); the first fan (24) is fixed to the upper surface of the combustion furnace (21); the exhaust pipe (25) is connected to the air inlet end of the first fan (24); the air supply pipe (26) is connected to the air outlet end of the first fan (24); and the heat circulation component (27) is arranged in the middle of the upper surface of the mounting seat (1) to recover and circulate the residual heat after the exhaust gas is burned.

2. The waste gas treatment equipment in the production of menthanediol according to claim 1, characterized in that: The heat circulation component (27) includes a processing box (271), a steam boiler (272) and a heat circulation pipe (273); the processing box (271) is fixed to the middle part of the upper surface of the mounting seat (1); the steam boiler (272) is fixed to the inner bottom wall of the processing box (271); the heat circulation pipe (273) is wound around the outside of the steam boiler (272); and the top end of the heat circulation pipe (273) is connected to the bottom end of the air supply pipe (26).

3. The waste gas treatment equipment in the production of menthanediol according to claim 1, characterized in that: An air guide pipe is fixed on the left side of the combustion furnace (21), and the bottom end of the air extraction pipe (25) penetrates and extends to the inner top wall of the combustion furnace (21).

4. The waste gas treatment equipment in the production of menthanediol according to claim 2, characterized in that: The upper surface of the steam boiler (272) is connected to a steam exhaust pipe.

5. The waste gas treatment equipment in the production of menthanediol according to claim 2, characterized in that: The purification mechanism (3) comprises a purification box (31), a sedimentation tank (32), a filter layer (33), a photolysis layer (34) and a plurality of UV lamp tubes (35); the purification box (31) is fixed to the right side of the upper surface of the mounting base (1); the sedimentation tank (32) is fixed to the inner bottom wall of the purification box (31); the filter layer (33) is fixed to the inner wall of the purification box (31); the photolysis layer (34) is fixed to the inner wall of the purification box (31); and the plurality of UV lamp tubes (35) are respectively fixed to the upper and lower sides of the photolysis layer (34).

6. The waste gas treatment equipment in the production of menthanediol according to claim 5, characterized in that: The interior of the sedimentation tank (32) is filled with a neutralizing liquid, the outside of the sedimentation tank (32) is connected to a water pipe, and a control valve is fixed to the outside of the water pipe.

7. The waste gas treatment equipment in the production of menthanediol according to claim 5, characterized in that: The filter layer (33) is an activated carbon layer, the bottom end of the heat circulation pipe (273) penetrates and extends to the inner bottom wall of the sedimentation tank (32), and the upper surface of the purification box (31) is connected to a discharge pipe.

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