VOCs organic waste gas treatment equipment

Abstract

The utility model discloses VOCs (volatile organic compounds) organic waste gas treatment equipment, which relates to the technical field of VOCs waste gas treatment and comprises a water tank and a combustion chamber. A gap is formed between the water surface in the water tank and the inner wall of the upper end of the water tank; one side of the water tank is connected with a gas inlet pipe for conveying VOCs organic waste gas, and the inner end of the gas inlet pipe extends into water in the water tank; a gas guide pipe is connected between the upper end of the water tank and the combustion chamber; the VOCs organic waste gas is introduced into the static water, so that the VOCs organic waste gas penetrates through the static water, dust and impurities in the VOCs organic waste gas are filtered, the requirement for water quality is low, water does not need to be circularly sprayed, the VOCs organic waste gas can be used for a long time, and full utilization of water resources is facilitated.

Description

Technical Field

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

[0002] VOCs are volatile organic compounds. VOCs are usually divided into several categories, including non-methane hydrocarbons (NMHCs for short), oxygen-containing organic compounds, halogenated hydrocarbons, nitrogen-containing organic compounds, and sulfur-containing organic compounds. VOCs participate in the formation of ozone and secondary aerosols in the atmospheric environment, and have an important impact on regional atmospheric ozone pollution and PM2.5 pollution. Most VOCs have a special unpleasant odor and are toxic, irritating, teratogenic, and carcinogenic. Benzene, toluene, and formaldehyde, in particular, can cause great harm to human health. VOCs are important precursors to urban haze and photochemical smog, and are mainly derived from processes such as coal chemical industry, petrochemical industry, fuel coating manufacturing, and solvent manufacturing and use.

[0003] Catalytic combustion is one of the most effective technologies for treating VOCs organic waste gas. Catalytic combustion uses a catalytic reactor to reduce the combustion temperature and accelerate the complete oxidation of toxic and harmful gases. The catalytic reactor includes a catalyst and its carrier. Since the catalyst carrier is made of porous materials, it has a large specific surface area and a suitable pore size. When the organic gas heated to 300-450°C passes through the catalytic layer, oxygen and organic gas are adsorbed on the catalyst on the surface of the porous material, which increases the chance of contact and collision between oxygen and organic gas, improves the activity, and causes a violent chemical reaction between organic gas and oxygen to generate CO2 and H2O, while generating heat, thereby turning the organic gas into a non-toxic and harmless gas.

[0004] Since the catalyst carrier is made of porous material, filtering impurities and dust from VOCs organic waste gas before catalytic combustion can improve the timeliness of the catalytic reactor, such as the utility model patent for a VOCs catalytic combustion purification device with publication number CN211146520U and the utility model patent for a VOCs catalytic combustion integrated machine with publication number CN218565446U; both can perform preliminary filtering and impurity removal on VOCs organic waste gas, wherein the former utilizes a nozzle to atomize water to spray and reduce dust and impurities on VOCs organic waste gas, and the nozzle has high requirements on water quality, and if there are a few impurities in the water, the circulating water needs to be replaced, which is not conducive to the full utilization of water resources. Utility Model Content

[0005] The purpose of the utility model is to provide a VOCs organic waste gas treatment device in order to solve the above-mentioned problems in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A VOCs organic waste gas treatment device comprises a water tank and a combustion chamber; a gap is provided between the water surface in the water tank and the inner wall of the upper end of the water tank; an air intake pipe for conveying VOCs organic waste gas is connected to one side of the water tank, and the inner end of the air intake pipe extends into the water in the water tank; an air guide pipe is connected between the upper end of the water tank and the combustion chamber, and a burner and a catalytic reactor are provided in the combustion chamber.

[0008] Furthermore, the catalytic reactor is located in the middle of the combustion chamber, the air guide pipe and the burner are connected to the lower end of the combustion chamber, and the upper end of the combustion chamber is connected to the exhaust pipe.

[0009] Furthermore, the exhaust pipe passes through the water tank and passes through the water in the water tank.

[0010] Furthermore, the exhaust pipe in the water tank is arranged in a spiral section.

[0011] Furthermore, a water collecting bottle is connected to the lower side of the last section of the exhaust pipe passing through the water tank.

[0012] Furthermore, a heat exchange sleeve is provided on the outside of the air guide pipe, and the heat exchange sleeve is connected in series to the exhaust pipe.

[0013] Furthermore, a gas distributor is connected to the inner end of the air inlet pipe.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model introduces VOCs organic waste gas into static water, allows the VOCs organic waste gas to pass through the static water, filters dust and impurities in the VOCs organic waste gas, has low requirements on water quality, does not need to circulate water for spraying, and can be used for a long time, which is conducive to the full utilization of water resources;

[0016] The utility model adopts a gas distributor to evenly distribute the VOCs organic waste gas in the water, so that the water can fully filter and retain the dust and impurities in the VOCs organic waste gas;

[0017] The utility model exhaust pipe efficiently heats the water in the water tank through the spiral section, and can indirectly heat the temperature of VOCs organic waste gas through water, effectively utilizing the waste heat of exhaust gas;

[0018] The utility model uses a heat exchange sleeve to heat the exhaust gas to heat the air duct, thereby heating the VOCs organic waste gas in the air duct, and further utilizes the exhaust gas waste heat to increase the temperature of the VOCs organic waste gas;

[0019] The utility model utilizes water and the spiral section of the exhaust pipe to promote the condensation of water vapor in the exhaust gas, and collects the water vapor through the water collecting bottle, thus turning waste into treasure, and the collected water can be used for water tank water. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the utility model.

[0022] Figure 3 It is a schematic diagram of the external three-dimensional structure of the utility model.

[0023] In the figure: 1. water tank; 2. combustion chamber; 3. air inlet pipe; 4. air guide pipe; 5. burner; 6. catalytic reactor; 7. gas distributor; 8. exhaust pipe; 9. heat exchange sleeve; 10. water collecting bottle; 81. spiral section. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0026] It should be noted that relational terms such as "first" and "second" are used only 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", "comprises" or any other variations 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.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the term "provided with" that may appear should be understood in a broad sense. For example, the object "provided with" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or an inseparable connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] The present invention is further described in detail below in conjunction with the embodiments.

[0030] VOCs are usually divided into several categories, such as non-methane hydrocarbons (NMHCs for short), oxygen-containing organic compounds, halogenated hydrocarbons, nitrogen-containing organic compounds, and sulfur-containing organic compounds. Since most VOCs organic waste gases are insoluble or difficult to dissolve in water, the utility model uses water to remove dust and impurities from VOCs organic waste gases.

[0031] Specific embodiments of the VOCs organic waste gas treatment equipment provided by the utility model:

[0032] See also Figure 1-3 , VOCs organic waste gas treatment equipment, including a water tank 1 and a combustion chamber 2; a certain amount of water is stored in the water tank 1, and a gap is provided between the water surface in the water tank 1 and the inner wall of the upper end of the water tank 1; a water injection port is provided on the upper side of the water tank 1, and a sealing cover needs to be provided on the water injection port. In some embodiments, a sewage outlet is provided at the lower end of the water tank 1, and a valve needs to be installed on the sewage outlet.

[0033] An air intake pipe 3 for transporting VOCs organic waste gas is connected to one side of the water tank 1, and the outer end of the air intake pipe 3 is connected to an external pipeline for transporting VOCs organic waste gas. In some embodiments, an air pump can be installed at the outer end of the air intake pipe 3 to pressurize the VOCs organic waste gas to facilitate passing through the water in the water tank 1.

[0034] The inner end of the air inlet pipe 3 extends into the water in the water tank 1; the inner end of the air inlet pipe 3 is connected to a gas distributor 7. In this embodiment, the gas distributor 7 is a disc-shaped hollow shell structure, and a plurality of gas outlets are provided on the upper side of the gas distributor 7, so that the VOCs organic waste gas is evenly distributed in the water, so that the water can more effectively and comprehensively filter the dust impurities in the VOCs organic waste gas, and realize the physical purification of the VOCs organic waste gas.

[0035] An air duct 4 is connected between the upper end of the water tank 1 and the combustion chamber 2. The VOCs organic waste gas after dust and impurity removal enters the combustion chamber 2 through the air duct 4. A burner 5 and a catalytic reactor 6 are provided in the combustion chamber 2; the catalytic reactor 6 is located in the middle of the combustion chamber 2, and the air duct 4 and the burner 5 are connected to the lower end of the combustion chamber 2. Specifically, the burner 5 is installed at the bottom of the combustion chamber 2, and its burner extends into the combustion chamber 2; an exhaust pipe 8 is connected to the upper end of the combustion chamber 2.

[0036] The burner 5 and the catalytic reactor 6 are both common devices in the art, and their specific structures are not described in detail in this embodiment. In this embodiment, the combustion chamber 2 directly utilizes the oxygen in the VOCs organic waste gas. In some embodiments, the combustion chamber 2 can be connected to an air intake structure to introduce external air to increase the oxygen content and promote combustion.

[0037] In this embodiment, a heat exchange sleeve 9 is provided on the outside of the air duct 4, and a gap is provided between the inner wall of the heat exchange sleeve 9 and the air duct 4 to form an exhaust passage, and the heat exchange sleeve 9 is connected in series to the exhaust pipe 8; the exhaust gas heats the air duct 4 through the heat exchange sleeve 9, and then heats the VOCs organic waste gas in the air duct 4, and the waste heat of the exhaust gas is used to increase the temperature of the VOCs organic waste gas before entering the combustion chamber 2; in some other embodiments, a heat exchanger can be selected to replace the heat exchange sleeve 9 to realize the heat exchange of the gas in the air duct 4 and the exhaust pipe 8.

[0038] The exhaust pipe 8 led out from the heat exchange sleeve 9 passes through the water tank 1 and the water in the water tank 1; the exhaust pipe 8 in the water tank 1 is arranged to be a spiral section 81, which efficiently heats the water in the water tank 1, and can indirectly heat the temperature of the VOCs organic waste gas through the water, thereby effectively utilizing the exhaust waste heat.

[0039] On the other hand, the water in the water tank 1 cools down the exhaust gas in the spiral section 81. Since the non-toxic gas after combustion contains water vapor, the water vapor in the exhaust gas can be condensed.

[0040] The lower side of the end of the exhaust pipe 8 passing through the water tank 1 is connected with an interface, and the lower side of the interface is connected with a water collecting bottle 10. Specifically, the water collecting bottle 10 and the interface can be connected by thread. The condensed water is collected by the water collecting bottle 10, and the collected water can be added to the water tank 1 for use, so as to realize self-production of water, provide utilization of water resources, and reduce waste of water resources.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A VOCs organic waste gas treatment device, characterized by: The invention comprises a water tank (1) and a combustion chamber (2); a gap is provided between the water surface in the water tank (1) and the inner wall of the upper end of the water tank (1); an air intake pipe (3) for conveying VOCs organic waste gas is connected to one side of the water tank (1), and the inner end of the air intake pipe (3) extends into the water in the water tank (1); an air guide pipe (4) is connected between the upper end of the water tank (1) and the combustion chamber (2), and a burner (5) and a catalytic reactor (6) are provided at the combustion chamber (2).

2. The VOCs organic waste gas treatment equipment according to claim 1, characterized in that: The catalytic reactor (6) is located in the middle of the combustion chamber (2), the air guide pipe (4) and the burner (5) are connected to the lower end of the combustion chamber (2), and the upper end of the combustion chamber (2) is connected to an exhaust pipe (8).

3. The VOCs organic waste gas treatment equipment according to claim 2, characterized in that: The exhaust pipe (8) passes through the water tank (1) and passes through the water in the water tank (1).

4. The VOCs organic waste gas treatment equipment according to claim 3 is characterized in that: The exhaust pipe (8) in the water tank (1) is arranged in the form of a spiral section (81).

5. The VOCs organic waste gas treatment equipment according to claim 3 or 4, characterized in that: The lower side of the end of the exhaust pipe (8) passing through the water tank (1) is connected to a water collecting bottle (10).

6. The VOCs organic waste gas treatment equipment according to claim 2, characterized in that: A heat exchange sleeve (9) is provided on the outside of the air guide pipe (4), and the heat exchange sleeve (9) is connected in series to the exhaust pipe (8).

7. The VOCs organic waste gas treatment equipment according to claim 1, characterized in that: The inner end of the air inlet pipe (3) is connected to a gas distributor (7).

Images