A system and method for treating organic waste gas

Abstract

The present invention proposes an organic waste gas treatment system and method, the treatment system comprising: an adsorption tower equipment, a bag dust collector, a regenerative combustion device, a fan and a combustion-supporting fan; the regenerative combustion device comprises a desorption regeneration furnace, a catalytic combustion furnace and a heat exchange furnace arranged in sequence from bottom to top; the air outlet end of the adsorption tower equipment is connected to the bag dust collector, the air outlet end of the bag dust collector is connected to the air inlet of the fan, the discharge end of the bag dust collector is connected to the regenerative combustion device, the air outlet of the combustion-supporting fan is connected to the air inlet box of the combustion-supporting air heat exchange device, and the discharge port of the regenerative combustion device is connected to the adsorption tower equipment; the equipment used in the treatment system is compact and occupies little space, the regenerative combustion device can effectively recycle heat, reduce energy consumption, and achieve energy saving and environmental protection; the treatment method of the present invention uses the above-mentioned treatment system to make the contact rate between the adsorbate and the VOCs molecules higher, and the adsorbate can achieve a better adsorption effect.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to an organic waste gas treatment system and method. Background Art

[0002] At present, atmospheric environmental problems are becoming increasingly serious, and waste gas emission control is receiving more and more attention from the government and all sectors of society. As the main component of industrial waste gas, organic waste gas is a common type of atmospheric pollutant, which has a great impact on the atmospheric environment and human body.

[0003] There are two main treatment methods for organic waste gas: recycling and non-recycling. The recycling method is represented by the condensation recycling method. The organic waste gas is adsorbed, absorbed, decomposed, separated, and then condensed to recover valuable organic matter. The non-recycling methods include activated carbon adsorption, thermal combustion, catalytic combustion, UV photolysis, plasma, etc. Among them, UV photolysis belongs to photocatalytic oxidation reaction, with high energy consumption and low treatment efficiency of less than 65%; the plasma method uses high-voltage electrodes to emit ions and electrons to crack organic molecules, and has obvious purification effects on low-concentration organic gases. The disadvantages are high power consumption and high investment; the initial treatment efficiency of the activated carbon adsorption method can reach 80%, but it is very easy to saturate, usually ineffective within a few days, and needs to be replaced and regenerated frequently, which brings secondary pollution. Many areas have clearly banned the use of activated carbon; compared with these three methods, burning organic waste gas is the most thorough treatment method. For example, the popular thermal combustion method is also called RTO method: in a regenerative incinerator, the collected organic waste gas is heated to about 750℃ and stays in the furnace for 1 second to oxidize and decompose the organic matter in the waste gas to generate harmless CO2 and H2O. In the current combustion method, the equipment used consumes a lot of energy to heat the waste gas to a high temperature. The desorption and regeneration of the adsorbent and the combustion of the VOCs gas are carried out in two devices, so a large amount of heat is lost, and more energy is needed to provide heat for the waste gas. Summary of the invention

[0004] In view of the above-mentioned defects, the object of the present invention is to provide an organic waste gas treatment system and method.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The present invention provides an organic waste gas treatment system, comprising: an adsorption tower device, a bag filter, a regenerative combustion device, a fan and a combustion-supporting fan;

[0007] It is further explained that the regeneration combustion device includes a desorption regeneration furnace, a catalytic combustion furnace and a heat exchange furnace which are arranged in sequence from bottom to top, the inlet of the heat exchange furnace is connected to the outlet of the catalytic combustion furnace by a flange, and the inlet of the catalytic combustion furnace and the outlet of the desorption regeneration furnace are connected by a flange; a combustion-supporting air heat exchange device is provided on the outside of the heat exchange furnace, and the combustion-supporting air heat exchange device includes an air inlet box, an air outlet box and a heat exchange pipe, the two ends of the heat exchange pipe are respectively connected to the air inlet box and the air outlet box, the heat exchange pipe is fixedly wound around the periphery of the heat exchange furnace, the air outlet box is connected to a hot air pipe, the air outlet end of the hot air pipe is connected to a combustion-supporting air pipe, and the combustion-supporting air pipe is fixed to the lower part of the catalytic combustion furnace and inserted into the interior of the catalytic combustion furnace;

[0008] It is further explained that the air outlet end of the adsorption tower equipment is connected to the bag-type dust collector, the air outlet end above the bag-type dust collector is connected to the air inlet of the fan, the discharge end below the bag-type dust collector is connected to the regeneration combustion device, the air outlet of the combustion-supporting fan is connected to the air inlet box of the combustion-supporting air heat exchange device, and the discharge port of the regeneration combustion device is connected to the adsorption tower equipment.

[0009] It is further explained that the processing system also includes a barrel and a circulating fan, one end of the barrel is sealed and connected to the discharge port of the regenerative combustion device; the outlet of the circulating fan is connected to the adsorption tower equipment through a sealed pipe, and the lower part of the barrel is connected to the sealed pipe.

[0010] It is further explained that an upper flange is provided above the catalytic combustion furnace, a lower flange is provided below the catalytic combustion furnace, a mounting flange is provided below the heat exchange furnace, and the inlet of the heat exchange furnace and the outlet of the catalytic combustion furnace are connected through the mounting flange and the upper flange; a supporting flange is provided above the desorption regeneration furnace, and the inlet of the catalytic combustion furnace and the outlet of the desorption regeneration furnace are connected through the supporting flange and the lower flange.

[0011] It is further explained that the supporting flange is provided with a sealing groove wall, the lower flange is provided with a sealing convex wall, the sealing groove wall and the sealing convex wall are installed in cooperation, and a sealing material is provided in the cooperation gap between the sealing groove wall and the sealing convex wall.

[0012] It is further explained that the desorption regeneration furnace includes a base plate, front and rear support plates, left and right support plates, an adjustment plate, a vibration seat, a heating box and a supporting tray; the front and rear support plates and the left and right support plates are installed around the base plate, the adjustment plate is installed on the base plate through an adjusting screw, the vibration seat is fixedly installed on the plate surface of the adjustment plate, the supporting tray is fixedly installed above the vibration seat, and the supporting tray is provided with a feed port and a discharge port; the mounting flange is fixed above the front and rear support plates and the left and right support plates.

[0013] It is further explained that the front and rear support plates are provided with support screws, the heating box is fixed on the support screws, and the heating box is separated from the supporting tray; refractory bricks and resistance wires are fixed in the heating box, and the resistance wires are inserted into the refractory bricks and fixed in the refractory bricks.

[0014] It is further explained that the inner wall of the catalytic combustion furnace is paved with refractory insulation material, a support plate is provided at the upper part of the interior of the catalytic combustion furnace, a catalyst block is provided on the support plate, a heating plate is provided below the support plate, the heating plate is composed of a heating resistance wire, and a temperature sensing device is provided below the heating plate.

[0015] It is further explained that the support plate is provided with 6 layers, and each layer of the support plate is provided with a catalyst block.

[0016] Furthermore, the present invention also provides a method for treating organic waste gas, which uses the above-mentioned organic waste gas treatment system and comprises the following steps:

[0017] Step S1: organic waste gas is concentratedly introduced into the adsorption tower equipment and fully mixed with the adsorbent to form a mixed substance; Step S2: the mixed substance is introduced into the bag filter, and the qualified gas of the mixed substance after the bag filter is extracted by the fan and discharged into the atmosphere; Step S3: the adsorbent passing through the bag filter is transported to the regeneration combustion device, passes through the desorption regeneration furnace, the adsorbent is regenerated and desorbs VOCs gas, flows into the catalytic combustion furnace, contacts the catalyst block and self-ignites, and is discharged through the exhaust port after the qualified gas is generated; Step S4: after the adsorbent is regenerated, it flows back to the adsorption tower equipment through the pipeline for recycling.

[0018] It is further explained that step S3 in the method for treating organic waste gas comprises the following steps:

[0019] Step S3-1: the adsorbent passing through the bag filter enters into the supporting plate through the feed port, and the adsorbent is regenerated and VOCs gas is desorbed through the heating effect of the heating box and the vibration effect of the vibration seat; Step S3-2: the VOCs gas enters into the catalytic combustion furnace, is mixed with the combustion-supporting air sprayed from the combustion-supporting air duct, and is heated to the auto-ignition temperature by the heating plate, and then contacts the catalyst block provided on the supporting plate to self-ignite and burn, so that the VOCs gas is purified and the purified gas is discharged from the exhaust port.

[0020] Beneficial effects of the present invention:

[0021] 1. The present invention adopts a combustion-supporting air heat exchange device to recycle heat, heat the cold air after passing through the heat exchange furnace, and then pass the heated combustion-supporting air into the catalytic combustion furnace to heat the VOCs gas, so as to effectively utilize resources and reduce energy consumption;

[0022] 2. The present invention adopts a regenerative combustion device, and the exhaust gas is in the regenerative combustion device from the bottom to the top, which can ensure that the gas will not leak, reduce hidden dangers, and reduce heat loss. The heat generated in the previous steps is effectively utilized, the heat production is reduced, the energy use is reduced, and energy saving and environmental protection are achieved.

[0023] 3. The present invention uses a circulating fan to pump the recycled regenerated adsorbent into the adsorption tower equipment through high-pressure air. The flowing adsorbent is fully mixed with the organic waste gas, which is beneficial to improve the adsorption rate of the adsorbent, ensure the adsorption effect of the adsorbent, and achieve better waste gas treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of equipment connection of the system of the present invention;

[0025] Figure 2 It is an overall schematic diagram of the regenerative combustion device of the present invention;

[0026] Figure 3 It is a specific cross-sectional view of the regenerative combustion device of the present invention.

[0027] Among them: adsorption tower equipment 1, bag filter 2, regeneration combustion device 3, desorption regeneration furnace 31, support flange 311, sealing groove wall 312, bottom plate 313, front and rear support plates 314, left and right support plates 315, adjustment plate 316, vibration seat 317, heating box 318, support tray 319, feed port 3191, discharge port 3192, support screw 3110, refractory brick 3111, resistance wire 3112, catalytic combustion Furnace 32, lower flange 321, sealing convex wall 322, refractory heat-insulating material 323, support plate 324, catalyst block 325, heating plate 326, upper flange 327, temperature sensing device 328, heat exchange furnace 33, mounting flange 331 fan 4, combustion-supporting fan 5, combustion-supporting air heat exchange device 6, air inlet box 61, air outlet box 62, heat exchange pipe 63, hot air pipe 64, combustion-supporting air pipe 65, barrel 7, circulating fan 8, and sealing pipe 9. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0029] An organic waste gas treatment system in this embodiment, such as Figure 1 As shown, it includes: an adsorption tower device 1, a bag filter 2, a regenerative combustion device 3, a fan 4 and a combustion-supporting fan 5.

[0030] It is further explained that if Figure 2 As shown, the regeneration combustion device 3 includes a desorption regeneration furnace 31, a catalytic combustion furnace 32 and a heat exchange furnace 33 which are arranged in sequence from bottom to top. The inlet of the heat exchange furnace 33 is connected to the outlet of the catalytic combustion furnace 32 through a flange, and the inlet of the catalytic combustion furnace 32 is connected to the outlet of the desorption regeneration furnace 31 through a flange; Figure 3 As shown, a combustion-supporting air heat exchange device 6 is provided on the outside of the heat exchange furnace 33, and the combustion-supporting air heat exchange device 6 includes an air inlet box 61, an air outlet box 62 and a heat exchange tube 63, and the two ends of the heat exchange tube 63 are respectively connected to the air inlet box 61 and the air outlet box 62, and the heat exchange tube 63 is fixedly wound around the periphery of the heat exchange furnace 33, and the air outlet box 62 is connected to a hot air pipe 64, and the air outlet end of the hot air pipe 64 is connected to a combustion-supporting air pipe 65, and the combustion-supporting air pipe 65 is fixed at the lower part of the catalytic combustion furnace 32 and inserted into the interior of the catalytic combustion furnace 32.

[0031] Furthermore, the air outlet end of the adsorption tower equipment 1 is connected to the bag-type dust collector 2, the air outlet end above the bag-type dust collector 2 is connected to the air inlet of the fan 4, the discharge end below the bag-type dust collector 2 is connected to the regeneration combustion device 3, the air outlet of the combustion-supporting fan 5 is connected to the air inlet box 61 of the combustion-supporting air heat exchange device 6, and the discharge port 3192 of the regeneration combustion device 3 is connected to the adsorption tower equipment 1.

[0032] Specifically, the present application provides an organic waste gas treatment system, which collects organic waste gas into a main pipeline and connects it to the lower part of the adsorption tower device 1. The waste gas flows from the bottom to the top in the adsorption tower device 1 and is fully mixed with the adsorbent in the adsorption tower. This mixed substance flows out from the top of the adsorption tower device 1 and enters the bag filter 2. The fan 4 draws air from the outlet of the bag filter 2 and discharges the cleaned gas through the smoke exhaust pipe. Since the fan 4 is arranged behind the bag filter 2, the bag filter 2, the adsorption tower device 1 and each organic waste gas pipeline are in a negative pressure state, which can ensure that the collected organic waste gas will not leak; further, the adsorbent containing VOCs coming out from the lower part of the bag filter 2 is transported to the regeneration combustion device 3. When passing through the desorption regeneration furnace 31, the adsorbent is electrically heated to a suitable desorption temperature for organic molecules, and the VOCs gas is desorbed from the adsorbent, and the adsorbent is regenerated. The desorbed regenerated adsorbent is discharged from the desorption regeneration furnace 31. The VOCs gas desorbed from the adsorbent flows from the regeneration combustion device 31 and is mixed and heated by the combustion-supporting air flowing out of the combustion-supporting air duct 65. The VOCs gas mixed with the combustion-supporting air is heated to the flammable temperature of the VOCs. When the mixed gas rises and passes through the catalyst, an oxidation combustion reaction occurs on the surface of the catalyst. The burned gas is cleaned and then passes upward through the heat exchange furnace 33 and is discharged from the exhaust port. The regeneration combustion device in this application The device 3 integrates a heat exchange furnace 33, a catalytic combustion furnace 32 and a desorption regeneration furnace 31. The advantages of the integrated equipment are particularly obvious. The small size takes up less space on the ground, which solves the problems of the trouble of connecting the pipelines between the separately arranged catalytic combustion furnace 32 and the desorption regeneration furnace 31, and the large size of the equipment leads to a large space occupation. The combustion-supporting air heat exchange device 6 is adopted to recycle the heat, heat the cold air after passing through the heat exchange furnace 33, and then pass the heated combustion-supporting air into the catalytic combustion furnace 32 to heat the VOCs gas, so as to effectively utilize resources, reduce energy consumption, and achieve the purpose of energy conservation and environmental protection. Furthermore, in the prior art, due to the separation of equipment, it is necessary to connect the gas through a pipeline to ensure the circulation of the gas, which will not only cause the loss of gas heat, but also may cause the risk of exhaust gas leakage in the pipeline when the pipeline is used for a long time. In the present application, the exhaust gas is in the regeneration combustion device 3 from the bottom of the regeneration combustion device 3 to the top, which can ensure that the gas will not leak, reduce hidden dangers, and reduce heat loss. The heat generated in the previous steps is effectively utilized, the heat production is reduced, the use of electricity is reduced, and energy conservation and environmental protection are achieved.

[0033] It is further explained that if Figure 1As shown, the organic waste gas treatment system also includes: a barrel 7 and a circulating fan 8, one end of the barrel 7 is sealed and connected to the discharge port 3192 of the regeneration combustion device 3; the outlet of the circulating fan 8 is connected to the adsorption tower equipment 1 through a sealed pipe 9, and the lower part of the barrel 7 is connected to the sealed pipe 9.

[0034] Specifically, after the adsorbent is regenerated through the desorption regeneration furnace 31, it flows into the barrel 7 at the discharge port 3192 of the regeneration combustion device 3. Since the circulating fan 8 blows high-pressure air into the sealed pipe, the gas in the sealed pipe 9 flows at a high speed, and the regenerated adsorbent in the barrel 7 is sucked into the sealed pipe 9 due to the pressure difference, and is fully mixed with the high-pressure air, and is pumped back into the adsorption tower equipment 1. Since the adsorbent pumped from the sealed pipe into the adsorption tower equipment 1 is in a flowing state, the adsorbent and the organic waste gas can be fully mixed, which greatly enhances the contact rate between the VOCs molecules and the adsorbent molecules, and can better complete the mass transfer between molecules, thereby achieving a better adsorption effect. Furthermore, in the present application, the regenerated adsorbent coming out of the discharge port 3192 is always transported in a closed pipe, and will not absorb air moisture, so it will not be affected by humid weather, and can ensure that the adsorbent has the ability to adsorb and desorb under any environmental conditions.

[0035] It is further explained that an upper flange 327 is provided above the catalytic combustion furnace 32, and a lower flange 321 is provided below the catalytic combustion furnace 32; a mounting flange 331 is provided below the heat exchange furnace 33, and the inlet of the heat exchange furnace 33 and the outlet of the catalytic combustion furnace 32 are connected through the mounting flange 331 and the upper flange 327; a supporting flange 311 is provided above the desorption regeneration furnace 31, and the inlet of the catalytic combustion furnace 32 and the outlet of the desorption regeneration furnace 31 are connected through the supporting flange 311 and the lower flange 321.

[0036] It is further explained that if Figure 3 As shown, the supporting flange 311 is provided with a sealing groove wall 312, and the lower flange 321 is provided with a sealing convex wall 322. The sealing groove wall 312 and the sealing convex wall 322 are installed in coordination, and sealing material is provided in the coordination gap between the sealing groove wall 312 and the sealing convex wall 322.

[0037] Specifically, the heat exchange furnace 33, the catalytic combustion furnace 32 and the desorption regeneration furnace 31 are fixedly connected by arranging flanges to ensure the stability of the three. At the same time, the desorbed VOCs gas can flow through the flange connection to ensure the gas flows from bottom to top, and finally the VOCs gas is catalytically burned to obtain purified gas for discharge.

[0038] Specifically, the catalytic combustion furnace 32 is installed above the desorption regeneration furnace 31, and is specifically installed by matching the sealing groove wall 312 and the sealing convex wall 322. Since the sealing groove wall 312 and the sealing convex wall 322 are not tightly matched, a sealing material is provided in the matching gap between the sealing groove wall 312 and the sealing convex wall 322 to ensure sealing so that VOCs gas does not leak out. The sealing material can be a high-temperature resistant sealing material such as high-temperature asphalt or epoxy resin. In the embodiment of the present application, high-temperature asphalt is used, and the high-temperature asphalt is poured into the matching gap between the sealing groove wall 312 and the sealing convex wall 322 to form a liquid seal, thereby ensuring that VOCs gas does not leak.

[0039] It is further explained that the desorption regeneration furnace 31 includes a bottom plate 313, front and rear support plates 314, left and right support plates 315, an adjustment plate 316, a vibration seat 317, a heating box 318 and a supporting tray 319; the front and rear support plates 314 and the left and right support plates 315 are installed around the bottom plate 313, the adjustment plate 316 is installed on the bottom plate 313 through an adjusting screw, the vibration seat 317 is fixedly installed on the plate surface of the adjustment plate 316, the supporting tray 319 is fixedly installed above the vibration seat 317, and the supporting tray 319 is provided with a feed port 3191 and a discharge port 3192.

[0040] Specifically, the front and rear support plates 314 and the left and right support plates 315 are fixed to each other around the bottom plate 313, forming an external support seat of the heat exchange furnace 33, which is also the base of the regenerative combustion device 3. The adjustment plate 316 is installed on the bottom plate 313 through an adjusting screw. By rotating the nut of the adjusting screw, the level of the adjustment plate 316 can be adjusted so that the regenerative combustion device 3 can always be set vertically to ensure that the gas can flow upward and be discharged; further, the present application is also provided with the vibration seat 317, and the supporting tray 319 is fixedly installed on the vibration seat 317. When the vibration seat 317 vibrates, it will drive the desorption tray to vibrate. When the adsorbent enters the supporting tray 319 through the feed port 3191, in addition to being heated by the heating box 318 to heat the adsorbent and desorb the VOCs gas, the vibration of the vibration seat 317 drives the adsorbent on the supporting tray 319 to vibrate, which helps the adsorbent to desorb the VOCs gas and improves the desorption rate of the adsorbent.

[0041] It is further explained that the front and rear support plates 314 are provided with support screws 3110, the heating box 318 is fixed on the support screws 3110, and the heating box 318 is separated from the supporting tray 319; refractory bricks 3111 and resistance wires 3112 are fixedly provided in the heating box 318, and the resistance wires 3112 are inserted into the refractory bricks 3111 and fixed in the refractory bricks 3111.

[0042] Specifically, in the present application, the heat of the heating box 318 is used to desorb VOCs gas from the adsorbent. The heat generated is provided by the combined action of the resistance wire 3112 and the heat-resistant converter to provide sufficient heat for the desorption of the adsorbent. By energizing the resistance wire 3112, the resistance wire 3112 will generate heat. Since the resistance wire 3112 is arranged inside the refractory brick 3111, the heat will be conducted to the refractory brick 3111. The refractory brick 3111 has strong heat resistance and can raise the temperature to a very high temperature. , and then the heat will be conducted to the adsorbent through the support tray 319; depending on the heating power of the resistor 3112, the temperature can be raised to 700°C at most. At this temperature, any oil, fat, polymer compound, VOCs gas and water molecules adsorbed by the adsorbent are desorbed, making the desorption more thorough and the adsorbent regenerated; in addition, since the heating box 318 is fixed on the support screw 3110 and is separated from the support tray 319, the vibration of the support tray 319 does not affect other components, thereby ensuring the stability of the overall structure.

[0043] It is further explained that the inner wall of the catalytic combustion furnace 32 is paved with refractory insulation material 323, a support plate 324 is provided at the upper part of the interior of the catalytic combustion furnace 32, a catalyst block 325 is provided on the support plate 324, a heating plate 326 is provided below the support plate 324, the heating plate 326 is composed of a heating resistance wire, and a temperature sensing device 328 is provided below the heating plate 326.

[0044] like Figure 3As shown, the present application provides a refractory heat-insulating material 323 inside the catalytic combustion furnace 32. While protecting the equipment, it fully utilizes the internal heat, reduces the use of energy for producing heat, and achieves the purpose of environmental protection and conservation. In addition, a heating plate 326 is provided inside the catalytic combustion furnace 32 to heat the VOCs gas to ensure that the VOCs gas reaches its self-ignition temperature. When the VOCs gas passes through the support plate 324, it contacts the catalyst block 325 to ensure that the VOCs gas self-ignites and burns, and the gas after the VOCs gas is burned is purified. Furthermore, due to the heating function in the desorption regeneration furnace 31 and the heating function of the combustion-supporting air, the VOCs gas already has a certain temperature. When the temperature sensing device 328 measures that the temperature of the gas has reached its self-ignition temperature, the heating plate 326 will not be heated, which is environmentally friendly and can reduce energy waste.

[0045] It is further explained that the support plate 324 is provided with 6 layers, and a catalyst block 325 is provided on each layer of the support plate 324 .

[0046] Specifically, the present application sets up 6 layers of catalyst blocks 325 to ensure that the VOCs gas is fully burned and no remaining VOCs gas is discharged into the atmosphere without being burned, causing the discharged gas to pollute the air.

[0047] Furthermore, the present application also proposes a method for treating organic waste gas, which uses the organic waste gas treatment system and includes the following steps: Step S1: the organic waste gas is concentrated into the adsorption tower equipment 1 and fully mixed with the adsorbent to form a mixed substance; Step S2: the mixed substance is passed into the bag filter 2, and the qualified gas of the mixed substance after the bag filter is extracted by the fan 4 and discharged into the atmosphere; Step S3: the adsorbate passing through the bag filter 2 is transported to the regeneration combustion device 3, passes through the desorption regeneration furnace 31, the adsorbate is regenerated and desorbs VOCs gas, flows into the catalytic combustion furnace 32, contacts the catalyst block 325, and self-ignites, and is discharged through the exhaust port after generating qualified gas; Step S4: after the adsorbate is regenerated, it flows back to the adsorption tower equipment 1 through the pipeline for recycling.

[0048] The present application proposes a method for treating organic waste gas, which treats the waste gas through adsorption of an adsorbent, and passes the adsorbent into the regenerative combustion device 3 to generate VOCs gas through desorption, and purifies the VOCs gas by combustion, thereby obtaining gas discharge that meets the standards. The method has a low investment cost, but can achieve a higher purification efficiency. The use of the regenerative combustion device 3 further reduces the energy consumption of the method, thereby achieving the purpose of environmental protection and energy saving.

[0049] It is further explained that step S3 in the method for treating organic waste gas includes the following steps: step S3-1: the adsorbent passing through the bag filter 2 enters the support plate 319 through the feed port, and the adsorbent is regenerated and desorbed into VOCs gas through the heating effect of the heating box 318 and the vibration effect of the vibration seat 317; step S3-2: the VOCs gas enters the catalytic combustion furnace 32, mixes with the combustion-supporting air sprayed from the combustion-supporting air duct 65, and is heated to the auto-ignition temperature by the heating plate 326, and then contacts the catalyst block 325 provided on the support plate 324 to self-ignite and burn, so that the VOCs gas is purified and the purified gas is discharged from the exhaust port.

[0050] Specifically, in the treatment method of the present application, the adsorbent is combined with the heating effect of the heating box 318 and the vibration effect of the vibration seat 317, so that any oil, fat, high molecular compound, VOCs gas and water molecules adsorbed by the adsorbent are desorbed, and the adsorbent is desorbed and regenerated more thoroughly; in addition, the method adopts a combustion-supporting air heat exchange device 6 to recycle heat, heat the cold air after passing through the heat exchange furnace 33, and then pass the heated combustion-supporting air into the catalytic combustion furnace 32 to heat the VOCs gas, effectively utilizing resources and reducing energy consumption, thereby achieving the purpose of energy saving and environmental protection.

[0051] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. An organic waste gas treatment system, characterized in that: include: Adsorption tower equipment, bag filter, regenerative combustion device, fan and combustion-supporting fan; The regeneration combustion device comprises a desorption regeneration furnace, a catalytic combustion furnace and a heat exchange furnace which are arranged in sequence from bottom to top, the inlet of the heat exchange furnace is connected to the outlet of the catalytic combustion furnace through a flange, and the inlet of the catalytic combustion furnace is connected to the outlet of the desorption regeneration furnace through a flange; A combustion-supporting air heat exchange device is provided on the outside of the heat exchange furnace, and the combustion-supporting air heat exchange device includes an air inlet box, an air outlet box and a heat exchange pipe, the two ends of the heat exchange pipe are respectively connected to the air inlet box and the air outlet box, the heat exchange pipe is fixedly wound around the periphery of the heat exchange furnace, the air outlet box is connected to a hot air pipe, the air outlet end of the hot air pipe is connected to a combustion-supporting air pipe, and the combustion-supporting air pipe is fixed to the lower part of the catalytic combustion furnace and inserted into the interior of the catalytic combustion furnace; The air outlet end of the adsorption tower equipment is connected to the bag-type dust collector, the air outlet end above the bag-type dust collector is connected to the air inlet of the fan, the discharge end below the bag-type dust collector is connected to the regeneration combustion device, the air outlet of the combustion-supporting fan is connected to the air inlet box of the combustion-supporting air heat exchange device, and the discharge port of the regeneration combustion device is connected to the adsorption tower equipment.

2. The organic waste gas treatment system according to claim 1, characterized in that: It also includes a barrel and a circulating fan, one end of the barrel is sealed and connected to the discharge port of the regenerative combustion device; the outlet of the circulating fan is connected to the adsorption tower equipment through a sealed pipe, and the lower part of the barrel is connected to the sealed pipe.

3. The organic waste gas treatment system according to claim 1, characterized in that: An upper flange is provided above the catalytic combustion furnace, and a lower flange is provided below the catalytic combustion furnace. A mounting flange is provided below the heat exchange furnace, and the inlet of the heat exchange furnace and the outlet of the catalytic combustion furnace are connected through the mounting flange and the upper flange; a supporting flange is provided above the desorption regeneration furnace, and the inlet of the catalytic combustion furnace and the outlet of the desorption regeneration furnace are connected through the supporting flange and the lower flange.

4. The organic waste gas treatment system according to claim 3, characterized in that: The supporting flange is provided with a sealing groove wall, the lower flange is provided with a sealing convex wall, the sealing groove wall and the sealing convex wall are installed in cooperation, and a sealing material is provided in the gap between the sealing groove wall and the sealing convex wall.

5. The organic waste gas treatment system according to claim 1, characterized in that: The desorption regeneration furnace comprises a bottom plate, front and rear support plates, left and right support plates, an adjustment plate, a vibration seat, a heating box and a supporting tray; The front and rear support plates and the left and right support plates are installed around the base plate, the adjustment plate is installed on the base plate through an adjusting screw, the vibration seat is fixedly installed on the plate surface of the adjustment plate, the supporting tray is fixedly installed above the vibration seat, and the supporting tray is provided with a feed port and a discharge port.

6. The organic waste gas treatment system according to claim 5, characterized in that: The front and rear support plates are provided with support screws, the heating box is fixed on the support screws, and the heating box is spaced apart from the supporting tray; Refractory bricks and resistance wires are fixedly arranged in the heating box, and the resistance wires are inserted into the refractory bricks and fixed in the refractory bricks.

7. The organic waste gas treatment system according to claim 1, characterized in that: The inner wall of the catalytic combustion furnace is paved with refractory insulation materials, a support plate is provided at the upper part of the interior of the catalytic combustion furnace, a catalyst block is provided on the support plate, a heating plate is provided below the support plate, the heating plate is composed of a heating resistance wire, and a temperature sensing device is provided below the heating plate.

8. The organic waste gas treatment system according to claim 7, characterized in that: The support plate is provided with 6 layers, and each layer of the support plate is provided with a catalyst block.

9. A method for treating organic waste gas, the method using the organic waste gas treatment system according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step S1: the organic waste gas is introduced into the adsorption tower equipment and fully mixed with the adsorbent to form a mixed substance; Step S2: the mixed substance is passed into the bag filter, and the qualified gas of the mixed substance after the bag filter is extracted by the fan and discharged into the atmosphere; Step S3: The adsorbate passing through the bag filter is transported to the regeneration combustion device, passes through the desorption regeneration furnace, the adsorbate is regenerated and desorbs VOCs gas, flows into the catalytic combustion furnace, contacts the catalyst block and self-ignites, and generates qualified gas and is discharged through the exhaust port; Step S4: After the adsorbate is regenerated, it flows back to the adsorption tower equipment through a pipeline for recycling.

10. The method for treating organic waste gas according to claim 9, characterized in that: Step S3 includes the following steps: Step S3-1: The adsorbate passing through the bag filter enters the support tray through the feed inlet, and the adsorbate is regenerated and desorbs VOCs gas through the heating effect of the heating box and the vibration effect of the vibration seat; Step S3-2: The VOCs gas enters the catalytic combustion furnace, mixes with the combustion-supporting air ejected from the combustion-supporting air duct, and is heated to the auto-ignition temperature by the heating plate. It then contacts the catalyst block on the support plate and self-ignites and burns, thereby purifying the VOCs gas and discharging the purified gas from the exhaust port.

Images