Waste gas source treatment and purification system

Abstract

The invention relates to the technical field of waste gas treatment, in particular to a waste gas source treatment and purification system which comprises a waste gas pre-dedusting module, a waste gas absorption and slow release module, a catalytic combustion purification module, a heat exchange module, a fan module and an automatic control module. An outlet of the waste gas pre-dedusting module communicates with an inlet of the waste gas absorption slow-release module, an outlet of the waste gas absorption slow-release module communicates with an inlet of the heat exchange module, an outlet of the heat exchange module communicates with an inlet of the catalytic combustion purification module, and an outlet of the catalytic combustion purification module communicates with an inlet of the fan module. An outlet of the fan module communicates with the atmosphere, and the automatic control module is in signal connection with the waste gas pre-dedusting module, the waste gas absorption and slow release module, the catalytic combustion purification module and the fan module. The purification system is high in purification efficiency and low in economic cost and energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to a waste gas source treatment and purification system. Background Art

[0002] The quality of tobacco is determined by the composition and content of its chemical components. After going through multiple steps of production processes, the differences in the chemical composition of different types of tobacco lead to differences in the flavor of the finished cigarettes. In the tobacco processing and production process, there are thousands of odor molecules produced at various production process points, and most of the odor molecules treated by tobacco odor treatment equipment are high molecular hydrocarbons. The common characteristics of these organic compounds are high odor concentration and poor solubility in water. The detection data show non-methane total hydrocarbon pollution. In these production processes, such as the silk making process, the waste gas volatilized from tobacco leaves and tobacco shreds during heating, flavoring and other processes is the main source of waste gas in cigarette production.

[0003] At present, the main waste gas treatment methods at home and abroad are absorption, biological filter, catalytic oxidation, ozone oxidation and combined treatment of some processes. However, in the tobacco industry, since its production is carried out intermittently in batches, its waste gas source strength is characterized by intermittent, high concentration and low air volume, and the vast majority of existing tobacco industry production enterprises mostly use the above-mentioned traditional waste gas treatment methods to treat it at the end of the total waste gas outlet. This leads to the need to use multiple waste gas treatment methods in series to purify the waste gas in order to meet the emission standards. The economic cost and energy consumption of its operation are both high, which has become an obstacle for enterprises to achieve their energy-saving and consumption-reduction goals. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an exhaust gas source treatment and purification system with high purification efficiency and low economic cost and energy consumption.

[0005] The present invention adopts the following technical solution:

[0006] The present invention provides a waste gas source treatment and purification system, comprising a waste gas pre-dust removal module, a waste gas absorption and slow-release module, a catalytic combustion purification module, a heat exchange module, a fan module and an automatic control module, wherein the inlet of the waste gas pre-dust removal module introduces organic waste gas, the outlet of the waste gas pre-dust removal module is connected with the inlet of the waste gas absorption and slow-release module, the outlet of the waste gas absorption and slow-release module is connected with the inlet of the heat exchange module, the outlet of the heat exchange module is connected with the inlet of the catalytic combustion purification module, the outlet of the catalytic combustion purification module is connected with the inlet of the fan module, the outlet of the fan module is connected with the atmosphere, and the automatic control module is signal-connected with the waste gas pre-dust removal module, the waste gas absorption and slow-release module, the catalytic combustion purification module and the fan module.

[0007] Preferably, the exhaust gas pre-dust removal module is a dust removal filter whose main body is made of anti-corrosion material.

[0008] Preferably, the dust removal filter is a bag-type dust removal filter, and the body is made of stainless steel material that has been pickled and passivated.

[0009] Preferably, the waste gas absorption and slow-release module is a falling film absorber whose main body is made of anti-corrosion material. The falling film absorber includes a liquid distributor and a gas-liquid separator, and the absorption liquid used in the falling film absorber is a temperature-sensitive absorption liquid. The bottom of the liquid distributor is connected to the gas-liquid separator, and the outlet of the gas-liquid separator is connected to the inlet of the heat exchange module. A heat exchange tube extends from the inlet of the heat exchange module, and the heat exchange tube extends to the position of the gas-liquid separator.

[0010] Preferably, the temperature-sensitive absorption liquid is composed of 5%-10% surfactant, 10%-15% temperature-sensitive agent, and 75%-85% water in terms of weight percentage.

[0011] Preferably, the surfactant is anionic sodium dodecyl sulfate, nonionic polyoxyethylene octylphenol ether or cationic hexadecyltrimethylammonium bromide; and the thermosensitive agent is 2-methyl-2-acrylate-2-[(2-methoxyethoxy)ethoxy]ethyl ester.

[0012] Preferably, the catalytic combustion purification module includes a flame arrester, a heat exchanger, an electric heater and a catalytic combustion chamber, the inlet of the flame arrester is connected to the outlet of the heat exchange module, the outlet of the flame arrester is connected to the inlet of the first heat exchange pipe on the heat exchanger, the outlet of the first heat exchange pipe on the heat exchanger is connected to the inlet of the electric heater, the outlet of the electric heater is connected to the inlet of the catalytic combustion chamber, the outlet of the catalytic combustion chamber is connected to the inlet of the second heat exchange pipe on the heat exchanger, the outlet of the second heat exchange pipe on the heat exchanger is connected to the inlet of the fan module, and the outlet of the heat exchange module extends out of the heat exchange pipe and extends to the position of the heat exchanger.

[0013] Preferably, the heat exchange module is a heat storage type or partitioning type heat exchanger.

[0014] Preferably, the fan module comprises a fan duct and a centrifugal fan, the inlet of the fan duct is connected to the outlet of the catalytic combustion purification module, the outlet of the fan duct is connected to the atmosphere, and the centrifugal fan is located in the fan duct.

[0015] Preferably, the automatic control module is a controller, and the exhaust gas pre-dust removal module, the exhaust gas absorption and slow-release module, the catalytic combustion purification module and the fan module are all installed with temperature sensors, gas flow sensors and VOCs concentration sensors, and the temperature sensors, gas flow sensors and VOCs concentration sensors are all connected to the controller signal.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] When the waste gas source treatment and purification system of the present invention is in use, the automatic control module controls the operation of other modules. Under the suction drive of the fan module, the organic waste gas first passes through the waste gas pre-dust removal module to remove particulate matter therein, then enters the waste gas absorption and slow-release module for storage, and is continuously and stably discharged slowly into the heat exchange module, thereby converting the high-concentration, low-air-volume intermittently discharged organic waste gas into continuous medium- and low-concentration VOCs organic waste gas, and then the heat exchange module preheats the organic waste gas, and then the organic waste gas enters the catalytic combustion purification module for oxidation reaction to react the organic matter to generate harmless H 2 O and CO 2 , and finally discharged into the atmosphere from the outlet of the fan module.

[0018] The waste gas source treatment and purification system of the present invention greatly reduces the impact of intermittent emission of high-concentration organic waste gas on the operating conditions of the catalytic combustion chamber by setting up a waste gas absorption and slow-release module, so that the catalytic combustion can purify the organic waste gas under optimal conditions. Stable and standard emission of organic waste gas can be achieved through a single catalytic oxidation method, thereby reducing investment costs and operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a connection relationship diagram of various modules of the exhaust gas source treatment and purification system in an embodiment of the present invention.

[0020] Figure 2 It is a schematic diagram of the waste gas absorption and slow-release module of the waste gas source treatment and purification system in an embodiment of the present invention.

[0021] The reference numerals are described as follows:

[0022] 1. Exhaust gas pre-dust removal module

[0023] 2. Waste gas absorption and slow release module

[0024] 3. Heat exchange module

[0025] 4. Catalytic combustion purification module

[0026] 5. Fan module

[0027] 6. Liquid distributor

[0028] 7. Gas-liquid separator DETAILED DESCRIPTION

[0029] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0033] See also Figure 1 The present embodiment provides a waste gas source treatment and purification system, including a waste gas pre-dust removal module 1, a waste gas absorption and slow-release module 2, a catalytic combustion purification module 4, a heat exchange module 3, a fan module 5 and an automatic control module. The inlet of the waste gas pre-dust removal module 1 is introduced with organic waste gas, the outlet of the waste gas pre-dust removal module 1 is connected with the inlet of the waste gas absorption and slow-release module 2, the outlet of the waste gas absorption and slow-release module 2 is connected with the inlet of the heat exchange module 3, the outlet of the heat exchange module 3 is connected with the inlet of the catalytic combustion purification module 4, the outlet of the catalytic combustion purification module 4 is connected with the inlet of the fan module 5, the outlet of the fan module 5 is connected with the atmosphere, and the automatic control module is signal-connected with the waste gas pre-dust removal module 1, the waste gas absorption and slow-release module 2, the catalytic combustion purification module 4 and the fan module 5.

[0034] When the exhaust gas source treatment and purification system of this embodiment is in use, the automatic control module controls the operation of other modules. Under the suction drive of the fan module 5, the organic exhaust gas first passes through the exhaust gas pre-dust removal module 1 to remove particulate matter therein, then enters the exhaust gas absorption and slow-release module 2 for storage, and is continuously and steadily discharged slowly into the heat exchange module 3, thereby converting the high-concentration, low-air-volume intermittently discharged organic exhaust gas into continuous medium- and low-concentration VOCs organic exhaust gas, and then the heat exchange module 3 preheats the organic exhaust gas, and then the organic exhaust gas enters the catalytic combustion purification module 4 for oxidation reaction to react the organic matter to generate harmless H2 O and CO 2 , and finally discharged into the atmosphere from the outlet of the fan module 5.

[0035] The waste gas source treatment and purification system of this embodiment greatly reduces the impact of intermittent emission of high-concentration organic waste gas on the operating conditions of the catalytic combustion chamber by setting up the waste gas absorption and slow-release module 2, so that the catalytic combustion can purify the organic waste gas under optimal conditions. Stable and standard emission of organic waste gas can be achieved through a single catalytic oxidation method, reducing investment costs and operating costs.

[0036] It should be noted that the exhaust gas pre-dust removal module 1 can remove particulate matter in the organic waste gas; the exhaust gas absorption and slow-release module 2 can efficiently absorb high-concentration organic waste gas emitted intermittently at the inlet, and continuously desorb the organic waste gas at the outlet, thereby stably releasing the organic waste gas; the catalytic combustion purification module 4 can use catalytic combustion technology to purify organic compounds in the exhaust gas to meet the emission standards of non-methane total hydrocarbons in the organic waste gas; the heat exchange module 3 can preheat the organic waste gas at room temperature before the organic waste gas enters the catalytic combustion purification module 4; the fan module 5 can realize unidirectional driving of the organic waste gas from the inlet of the exhaust gas pre-dust removal module 1 to the outlet of the fan module 5; the automatic control module can automatically control the fan speed of the fan module 5 and the slow-release exhaust gas concentration of the exhaust gas absorption and slow-release module 2 according to the catalytic combustion temperature in the catalytic combustion purification module 4, so as to realize that the catalytic combustion purification module 4 can stably and continuously perform catalytic combustion without additional heating.

[0037] Preferably, the exhaust gas pre-dust removal module 1 is a dust removal filter whose main body is made of anti-corrosion material.

[0038] It should be noted that the anti-corrosion material for making the dust filter body can be stainless steel, fiberglass, acid-resistant cement, ceramics, engineering plastics, etc., but in the present embodiment, stainless steel is preferred.

[0039] Preferably, the dust removal filter is a bag-type dust removal filter, and the body is made of stainless steel material that has been pickled and passivated.

[0040] Preferably, see Figure 2 The waste gas absorption and slow-release module 2 is a falling film absorber whose main body is made of anti-corrosion material. The falling film absorber includes a liquid distributor 6 and a gas-liquid separator 7, and the absorption liquid used in the falling film absorber is a temperature-sensitive absorption liquid. The bottom of the liquid distributor 6 is connected to the gas-liquid separator 7, and the outlet of the gas-liquid separator 7 is connected to the inlet of the heat exchange module 3. A heat exchange pipe extends from the inlet of the heat exchange module 3, and the heat exchange pipe extends to the position of the gas-liquid separator 7.

[0041] After the organic waste gas enters the waste gas absorption and slow-release module 2, the temperature-sensitive absorption liquid in the falling film absorber descends vertically along the inner wall of the tube array in the form of a thin film, and the organic waste gas passes through the inner tube space from top to bottom. The gas-liquid two phases undergo mass transfer reaction on the flowing liquid film, so that the high-concentration organic compounds in the organic waste gas are absorbed by the temperature-sensitive absorption liquid. After the temperature-sensitive absorption liquid that has adsorbed the organic compounds enters the gas-liquid separator 7 from top to bottom, the gas-liquid separator 7 is subjected to non-contact heat exchange through the heat exchange tube extending from the inlet of the heat exchange module 3, so that the temperature-sensitive absorption liquid is heated to the temperature-sensitive critical temperature, and the temperature-sensitive agent in the temperature-sensitive absorption liquid component undergoes a transformation between hydrophilicity and hydrophobicity, thereby desorbing the organic compounds and realizing the continuous and stable discharge of the organic waste gas into the heat exchange module 3.

[0042] It should be noted that the anti-corrosion material for making the falling film absorber body can be stainless steel, fiberglass, ceramics, engineering plastics, etc., but in this embodiment, polypropylene engineering plastics are preferred.

[0043] Preferably, in this embodiment, the liquid distributor 6 can be selected from a tooth gap overflow type liquid film distributor, a tangential hole type liquid film distributor, a tangential groove type liquid film distributor, a spiral groove type liquid film distributor, a diversion spray type liquid film distributor or a diversion tooth gap type liquid film distributor, and the diversion spray type liquid film distributor is preferred.

[0044] Preferably, the temperature-sensitive absorption liquid is composed of 5%-10% surfactant, 10%-15% temperature-sensitive agent, and 75%-85% water in terms of weight percentage.

[0045] Specifically, in this embodiment, the composition of the temperature-sensitive absorption liquid according to weight percentage is: 8% surfactant; 12% temperature-sensitive agent; 80% water.

[0046] Preferably, the surfactant is anionic sodium dodecyl sulfate, nonionic polyoxyethylene octylphenol ether or cationic hexadecyltrimethylammonium bromide; the thermosensitive agent is 2-methyl-2-acrylate-2-[(2-methoxyethoxy)ethoxy]ethyl ester, and its thermosensitive critical temperature is 49°C.

[0047] Preferably, in this embodiment, the surfactant is non-ionic polyoxyethylene octylphenol ether, and the molecular formula of the temperature sensitive agent is:

[0048]

[0049] Preferably, the catalytic combustion purification module 4 includes a flame arrester, a heat exchanger, an electric heater and a catalytic combustion chamber, the inlet of the flame arrester is connected to the outlet of the heat exchange module 3, the outlet of the flame arrester is connected to the inlet of the first heat exchange pipe on the heat exchanger, the outlet of the first heat exchange pipe on the heat exchanger is connected to the inlet of the electric heater, the outlet of the electric heater is connected to the inlet of the catalytic combustion chamber, the outlet of the catalytic combustion chamber is connected to the inlet of the second heat exchange pipe on the heat exchanger, the outlet of the second heat exchange pipe on the heat exchanger is connected to the inlet of the fan module 5, and the outlet of the heat exchange module 3 extends out of the heat exchange pipe and extends to the position of the heat exchanger.

[0050] After entering the catalytic combustion purification module 4, the organic waste gas first enters the heat exchanger through the flame arrester, and then enters the electric heater for heating after the heat exchange of the heat exchanger, so that the organic waste gas with a lower temperature is heated to the catalytic ignition temperature. Then, the heated organic waste gas enters the catalytic combustion chamber, and under the catalytic action of the catalyst in the catalytic combustion chamber, the organic matter in the organic waste gas is oxidized to generate H 2 O and CO 2 At the same time, due to the heat release of the catalytic reaction, the temperature of the gas after the reaction rises to a certain temperature value. These gases are heat exchanged with the heat exchange tube at the outlet of the heat exchange module 3 through the second heat exchange pipe of the heat exchanger, which not only recycles the heat energy, but also makes the temperature of the gas discharged into the atmosphere lower, which is conducive to preventing the occurrence of safety accidents.

[0051] It should be noted that, in this embodiment, the catalyst used in the catalytic combustion chamber of the catalytic combustion purification module 4 is γ-Al 2 O 3 The platinum-palladium bimetallic catalyst is used as a carrier. The application of this catalyst is conducive to ensuring that the gas discharged into the atmosphere meets the emission standard of non-methane total hydrocarbons less than 50mg / m 3 ,3.0kg / h.

[0052] Preferably, the heat exchange module 3 is a heat storage type or partition type heat exchanger. It should be noted that the heat exchange module 3 preheats the organic waste gas to 200° C.-300° C. to make it reach the temperature required for catalytic combustion conditions before entering the catalytic combustion purification module 4 .

[0053] Preferably, in this embodiment, the heat exchange module 3 is a partition-type heat exchanger.

[0054] Preferably, the fan module 5 includes a fan duct and a centrifugal fan, the inlet of the fan duct is connected to the outlet of the catalytic combustion purification module 4, the outlet of the fan duct is connected to the atmosphere, and the centrifugal fan is located in the fan duct. The centrifugal fan is used to drive the collection of organic waste gas, and then after the treatment process, it is discharged in compliance with the standards.

[0055] It should be noted that the centrifugal fan is preferably resistant to high temperature and low speed, and can ensure that the fan noise does not exceed 85dB while ensuring the working effect, and there is no secondary pollution.

[0056] In addition, the centrifugal fan, as the power source for the airflow operation of the entire purification system, can be equipped with a vibration-damping pedestal and a shock absorber, and the main body can be made of anti-corrosion materials, preferably fiberglass.

[0057] Preferably, the automatic control module is a controller, and the exhaust gas pre-dust removal module 1, the exhaust gas absorption and slow-release module 2, the catalytic combustion purification module 4 and the fan module 5 are all installed with temperature sensors, gas flow sensors and VOCs concentration sensors, and the temperature sensors, gas flow sensors and VOCs concentration sensors are all connected to the controller signal.

[0058] Therefore, the controller can automatically control the fan speed of the fan module 5 and the flow and temperature of the temperature-sensitive absorption liquid in the exhaust gas absorption and slow-release module 2 according to the catalytic combustion temperature in the catalytic combustion purification module 4 by feeding back the temperature, gas flow and VOCs concentration collected by the sensor, so as to achieve stable and continuous catalytic combustion in the catalytic combustion purification module 4 without the need for additional heating.

[0059] Specifically, in this embodiment, temperature sensors, gas flow sensors and VOCs concentration sensors are installed on the dust removal filter of the exhaust gas pre-dust removal module 1, on the gas-liquid separator 7 of the exhaust gas absorption and slow-release module 2, in the catalytic combustion chamber of the catalytic combustion purification module 4, and in the fan duct of the fan module 5.

[0060] This time, the falling film absorber is innovatively applied in the purification process for source treatment of high-concentration, low-air-volume intermittent exhaust gas. The purification system has the advantages of low resistance and high exhaust gas absorption efficiency; large process condition flexibility and wide production capacity adjustment range; no pollution to the medium and good product quality; high heat transfer efficiency, long equipment life, easy operation and maintenance, etc.

[0061] The overall solution this time is to combine the falling film absorber and improved catalytic combustion technology, and through the automatic control module, form an operating condition for intermittent emission of high-concentration organic waste gas in flavoring workshops such as cigarette production and processing, and realize the waste gas purification treatment process from the source strength control.

[0062] This solution has a wide range of applications, and the waste gas absorption and slow-release module 2 therein can also be used in conjunction with other waste gas purification technologies, so that it can be applied to sewage treatment plants, the pharmaceutical industry, various spray workshops, chemical fiber plants, leather factories, etc., to solve various difficult-to-degrade odorous waste gas pollution problems.

[0063] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A waste gas source treatment and purification system, characterized in that: The invention comprises an exhaust gas pre-dust removal module (1), an exhaust gas absorption and slow-release module (2), a catalytic combustion purification module (4), a heat exchange module (3), a fan module (5) and an automatic control module. The inlet of the exhaust gas pre-dust removal module (1) is supplied with organic exhaust gas. The outlet of the exhaust gas pre-dust removal module (1) is connected to the inlet of the exhaust gas absorption and slow-release module (2). The outlet of the exhaust gas absorption and slow-release module (2) is connected to the inlet of the heat exchange module (3). The outlet of the heat exchange module (3) is connected to the inlet of the catalytic combustion purification module (4). The outlet of the catalytic combustion purification module (4) is connected to the inlet of the fan module (5). The outlet of the fan module (5) is connected to the atmosphere. The automatic control module is signal-connected to the exhaust gas pre-dust removal module (1), the exhaust gas absorption and slow-release module (2), the catalytic combustion purification module (4) and the fan module (5).

2. The exhaust gas source treatment and purification system according to claim 1 is characterized in that: The exhaust gas pre-dust removal module (1) is a dust removal filter whose main body is made of anti-corrosion material.

3. The exhaust gas source treatment and purification system according to claim 2 is characterized in that: The dust removal filter is a bag-type dust removal filter, and the body is made of stainless steel material subjected to pickling and passivation treatment.

4. The exhaust gas source treatment and purification system according to claim 1, characterized in that: The waste gas absorption and slow-release module (2) is a falling film absorber whose main body is made of anti-corrosion material. The falling film absorber includes a liquid distributor (6) and a gas-liquid separator (7), and the absorption liquid used in the falling film absorber is a temperature-sensitive absorption liquid. The bottom of the liquid distributor (6) is connected to the gas-liquid separator (7), and the outlet of the gas-liquid separator (7) is connected to the inlet of the heat exchange module (3). A heat exchange tube extends from the inlet of the heat exchange module (3), and the heat exchange tube extends to the position of the gas-liquid separator (7).

5. The exhaust gas source treatment and purification system according to claim 4 is characterized in that: The temperature-sensitive absorption liquid is composed of 5%-10% surfactant, 10%-15% temperature-sensitive agent and 75%-85% water in terms of weight percentage.

6. The exhaust gas source treatment and purification system according to claim 5, characterized in that: The surfactant is anionic sodium lauryl sulfate, nonionic polyoxyethylene octylphenol ether or cationic hexadecyl trimethyl ammonium bromide; The temperature sensitive agent is 2-methyl-2-acrylic acid-2-[(2-methoxyethoxy)ethoxy]ethyl ester.

7. The exhaust gas source treatment and purification system according to claim 1, characterized in that: The catalytic combustion purification module (4) comprises a flame arrester, a heat exchanger, an electric heater and a catalytic combustion chamber, the inlet of the flame arrester is connected to the outlet of the heat exchange module (3), the outlet of the flame arrester is connected to the inlet of a first heat exchange pipe on the heat exchanger, the outlet of the first heat exchange pipe on the heat exchanger is connected to the inlet of the electric heater, the outlet of the electric heater is connected to the inlet of the catalytic combustion chamber, the outlet of the catalytic combustion chamber is connected to the inlet of a second heat exchange pipe on the heat exchanger, the outlet of the second heat exchange pipe on the heat exchanger is connected to the inlet of the fan module (5), and the outlet of the heat exchange module (3) extends out of the heat exchange pipe and extends to the position of the heat exchanger.

8. The exhaust gas source treatment and purification system according to claim 1, characterized in that: The heat exchange module (3) is a heat storage type or partition type heat exchanger.

9. The exhaust gas source treatment and purification system according to claim 1, characterized in that: The fan module (5) comprises a fan duct and a centrifugal fan, the inlet of the fan duct is connected to the outlet of the catalytic combustion purification module (4), the outlet of the fan duct is connected to the atmosphere, and the centrifugal fan is located in the fan duct.

10. The exhaust gas source treatment and purification system according to claim 1, characterized in that: The automatic control module is a controller, and the exhaust gas pre-dust removal module (1), the exhaust gas absorption and slow-release module (2), the catalytic combustion purification module (4) and the fan module (5) are all equipped with a temperature sensor, a gas flow sensor and a VOCs concentration sensor, and the temperature sensor, the gas flow sensor and the VOCs concentration sensor are all connected to the controller signal.

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