VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances

Abstract

The present invention provides a VOC waste gas treatment system with in-situ regeneration and the ability to treat high-boiling-point substances. The VOC waste gas treatment system with in-situ regeneration and the ability to treat high-boiling-point substances sequentially passes the VOC waste gas through a pretreatment section and a concentration rotor provided with several stages of filtration modules. The concentration rotor is provided with an adsorption zone, a cooling zone and a desorption zone. The channel leading out of the desorption zone passes the VOC desorbed from the concentration rotor into an RTO furnace for oxidative combustion. At least some of the several stages of filtration modules include columnar or extruded molecular sieves. The RTO furnace includes a combustion chamber and a heat storage chamber. The combustion chamber has a cavity for burning VOC and discharging it to the outside atmosphere. The number of heat storage chambers is three or more, and each heat storage chamber includes a first heat storage body and a second heat storage body that are separated. The upstream of the first heat storage body is connected to the downstream channel of the desorption zone, and the second heat storage body is connected to the outside air.

Description

Technical Field

[0001] The present invention relates to the field of VOC treatment, and in particular to a VOC waste gas treatment system with in-situ regeneration and capable of treating VOC waste gas containing high-boiling-point substances. Background Art

[0002] Volatile organic compounds (VOCs) are organic compounds that can participate in atmospheric photochemical reactions, or as determined in accordance with relevant regulations. They are important precursors to fine particulate matter (PM2.5) and ozone in the atmosphere. Their emissions not only pollute and impact the surrounding environment but also pose a risk to human health.

[0003] For the treatment of high-volume, low-concentration VOC exhaust, physical adsorption is often used to concentrate the exhaust before incineration in a small incinerator. This is a cost-effective and reliable method, consistently meeting emission standards. Zeolite rotor adsorption concentration combined with RTO technology has become a recognized mainstream VOC treatment process both domestically and internationally. However, many industries' exhaust gases contain high-boiling-point organic compounds. These organic compounds (such as VOCs with boiling points above 170°C) are easily adsorbed on the zeolite concentrator rotor. Under normal operating conditions, the desorption temperature of 180°C-200°C is insufficient to completely remove them. Under these conditions, high-boiling-point VOCs accumulate on the rotor and remain in the pores of the zeolite, occupying adsorption sites. Over time, the residual volume increases, leaving fewer pores available for adsorption and desorption, ultimately impacting the overall efficiency of the system and potentially creating safety hazards such as smoldering. Furthermore, some of these compounds, after desorption, enter the RTO, where they condense upon cooling and adhere to the pipes and the cooler thermal storage bricks below, potentially causing RTO brick blockage.

[0004] The existing technology is to install activated carbon at the front end and equip the rotor with a high-temperature operation mode for treatment. Although this method can intercept most high-boiling point substances in the short term, if it is not replaced in time, it will soon penetrate and fail, and there is a risk of subsequent equipment being blocked again or exceeding the standard instantaneously. At the same time, activated carbon after adsorption saturation is hazardous waste and needs to be handed over to a qualified third-party company for recycling and disposal, and the processing fee is relatively high. In addition, if the RTO heat storage brick is blocked, it is necessary to manually remove the blocked heat storage brick and use steam to blow away the tar condensed on the heat storage brick to melt and blow it clean, and then reinstall the heat storage brick into the RTO; this method wastes a lot of manpower and time, and the RTO needs to be shut down during the cleaning of the heat storage brick, which will affect the production of the workshop and cause direct economic losses to customers. Summary of the Invention

[0005] In view of this, the present invention aims to propose a VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances, so as to treat high-boiling-point substances present in low-concentration industrial waste gas.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A VOC waste gas treatment system with in-situ regeneration and the ability to treat high-boiling-point substances, wherein the VOC waste gas is sequentially passed through a pretreatment section having several stages of filtration modules and a concentration rotor, wherein the concentration rotor is provided with an adsorption zone, a cooling zone, and a desorption zone. A channel leading from the desorption zone passes the VOC desorbed from the concentration rotor into an RTO furnace for oxidative combustion; at least some of the several stages of filtration modules include columnar or extruded molecular sieves;

[0008] The RTO furnace includes a combustion chamber and a regenerator. The combustion chamber has a cavity for burning VOCs and discharging them to the outside atmosphere. The number of the regenerators is three or more, and each regenerator includes a first regenerator and a second regenerator separated from each other. The upstream of the first regenerator is connected to the downstream channel of the desorption zone, and the second regenerator is connected to the outside air.

[0009] Furthermore, a desorption heat exchanger is provided on the communication channel between the cooling zone and the desorption zone, and a primary heat supply pipe of the desorption heat exchanger is connected to the combustion chamber so that the combustion chamber provides heat to heat the communication channel between the cooling zone and the desorption zone.

[0010] Furthermore, the downstream of the desorption zone channel is connected to fresh air, so that the VOC to be burned is mixed with the fresh air and then flows into the RTO furnace.

[0011] Furthermore, the structure in which the second heat storage body is connected to the outside air includes a fresh air channel for heating fresh air through a high-temperature purge heat exchanger and then connecting it to the second heat storage body, and an air supply channel connecting the fresh air channel and the outside atmosphere, and the air supply channel discharges the gas after the VOC combustion into the atmosphere; the primary heat supply pipe of the high-temperature purge heat exchanger is connected to the combustion chamber.

[0012] Furthermore, in the structure where the second heat storage body is connected to the outside air, fresh air is heated by the high-temperature purge heat exchanger and then passed into the molecular sieve desorption box. The molecular sieve desorption box can accommodate columnar or extruded molecular sieves, and the VOCs adsorbed on the columnar or extruded molecular sieves are desorbed by purge with fresh air.

[0013] Furthermore, fresh air is passed into the high-temperature purge heat exchanger through a high-temperature purge blower.

[0014] Furthermore, the several levels of filter modules in the pre-processing section include main filter modules and backup filter modules, and the main filter modules and backup filter modules are arranged in parallel in two channels.

[0015] Furthermore, an adsorption fan for discharging VOC waste gas into the atmosphere is provided on the channel leading out of the adsorption zone.

[0016] Furthermore, an RTO purge blower is provided upstream of the first heat storage body so that fresh air is blown into the combustion chamber through the first heat storage body.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances of the present invention performs multi-stage filtration through a pre-treatment section equipped with several stages of filtration modules, so that the concentration of particulate dust and high-boiling-point substances entering the adsorption concentration section is greatly reduced, thereby protecting the service life of the rotor to the maximum extent and reducing the operating frequency of the rotor high-temperature desorption mode; the concentration rotor is provided with an adsorption zone, a cooling zone and a desorption zone, which can adsorb harmful substances in the VOC waste gas and discharge gases that meet environmental protection requirements. After desorption, the adsorbed harmful substances can be concentratedly burned and processed into harmless gases; the RTO furnace includes a combustion The combustion chamber and the heat storage chamber, the combustion chamber has a cavity for burning VOC and discharging it to the outside atmosphere. The number of heat storage chambers is three or more, and different heat storage chambers can be switched to introduce VOC to be burned and discharge harmless gases, so that the heat storage body can preheat the VOC to be burned and save fuel; the first heat storage body and the second heat storage body are arranged separately, and the upstream of the first heat storage body is connected to the downstream channel of the desorption zone to pass the VOC to be burned into the combustion chamber, and the second heat storage body is connected to the outside air to pass the combustion-supporting gas in the air into the combustion chamber. The two channels are relatively independent, which can effectively prevent the heat storage chamber from being blocked.

[0019] A desorption heat exchanger is provided on the communication channel between the cooling zone and the desorption zone. The primary heat supply pipe of the desorption heat exchanger is connected to the combustion chamber so that the combustion chamber provides heat to heat the communication channel between the cooling zone and the desorption zone. The heat of the combustion chamber can be used to heat the desorption zone on the concentrating wheel, thereby making the desorption efficiency of VOC higher.

[0020] The structure connecting the second thermal storage body to the outside air includes a fresh air duct that heats fresh air through a high-temperature purge heat exchanger and then introduces it into the second thermal storage body, and an air supply duct that connects the fresh air duct to the outside air. The air supply duct discharges the VOC combustion gases to the atmosphere. The primary heat supply pipe of the high-temperature purge heat exchanger is connected to the combustion chamber, so that the heat of the high-temperature purge heat exchanger is provided by the combustion chamber, preheating the fresh air and effectively saving energy.

[0021] In the structure in which the second heat storage body is connected to the outside air, fresh air is heated by the high-temperature purge heat exchanger and then passes into the molecular sieve desorption box. The molecular sieve desorption box can accommodate columnar or extruded molecular sieves, and the VOCs adsorbed on the columnar or extruded molecular sieves are desorbed by the fresh air purge, so that different heat storage chambers can be rotated for utilization, thereby improving utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the structural connection of the VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances according to the present invention;

[0024] Figure 2 This is a schematic diagram of the main view of the RTO furnace in the VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances according to the present invention;

[0025] Figure 3 This is a left side schematic diagram of an RTO furnace in the VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances according to the present invention;

[0026] Figure 4 for Figure 3 A view of the first regenerator of the RTO furnace in the VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances, taken along the AA direction;

[0027] Description of reference numerals:

[0028] 1. Pre-processing section; 101. Filtering module;

[0029] 2. Concentration wheel; 201. Adsorption zone; 202. Cooling zone; 203. Desorption zone;

[0030] 3. RTO furnace; 301. First regenerator; 302. Second regenerator; 303. Third regenerator; 304. Combustion chamber; 311. First regenerator; 312. Second regenerator; 313. Insulation foam;

[0031] 4. Desorption heat exchanger;

[0032] 5. Molecular sieve desorption box;

[0033] 6. High temperature purge heat exchanger;

[0034] 701, adsorption fan; 702, RTO purge fan; 703, desorption fan; 704, RTO fan; 705, high-temperature purge fan;

[0035] 8. Valve;

[0036] 9. Mixing box

[0037] a. Fresh air;

[0038] b. Industrial waste gas. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0040] In the description of the present invention, it should be noted that if terms such as "upper," "lower," "inner," and "back" appear, they are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, if terms such as "first" through "fifth" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0042] A VOC waste gas treatment system with in-situ regeneration and the ability to treat high-boiling-point substances, the system sequentially passes VOC waste gas through a pretreatment section 1 having several stages of filtration modules 101 and a concentration rotor 2, wherein the concentration rotor 2 is provided with an adsorption zone 201, a cooling zone 202, and a desorption zone 203. A channel leading from the desorption zone 203 passes the VOC desorbed from the concentration rotor 2 into an RTO furnace 3 for oxidative combustion; at least some of the several stages of filtration modules 101 include columnar or extruded molecular sieves; the RTO furnace 3 includes a combustion chamber 304 and a heat storage chamber, wherein the combustion chamber 304 has a cavity for burning VOCs and discharging them to the outside atmosphere; the number of the heat storage chambers is three or more, and each heat storage chamber includes a separated first heat storage body 311 and a second heat storage body 312, wherein the upstream of the first heat storage body 311 is connected to the downstream channel of the desorption zone 203, and the second heat storage body 312 is connected to the outside air.

[0043] Based on the above ideas, the structural connection diagram of the VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances is as follows: Figure 1As shown in the figure, industrial waste gas b (containing VOC) is first pretreated by the pretreatment section 1. The pretreatment section 1 includes two filter modules 101. These two filter modules 101 can be used as a main and a standby in rotation. Each filter module 101 can also include a G4-level filter module 101, an F5-level filter module 101, a columnar or extruded molecular sieve purification module, and an F7 or F9-level filter module 101. The G4, F7 or F9-level filter module 101 filters particulate matter in the waste gas, and the columnar or extruded molecular sieve pre-filters high-boiling-point substances. In addition, a pressure sensor can be installed at each level of the filter module 101, and the filter module 101 can be replaced according to the feedback signal of the sensor. The pretreatment section 1 can perform medium and high-precision filtration on the VOC waste gas, so that the concentration of particulate dust and high-boiling-point substances entering the adsorption concentration section is greatly reduced, the service life of the rotor is protected to the maximum extent, and the operation frequency of the rotor high-temperature desorption mode is reduced.

[0044] like Figure 1 As shown, after passing through the pretreatment section 1, the VOC waste gas is divided into two branches and enters the concentration rotor 2. The concentration rotor 2 is provided with an adsorption zone 201, a cooling zone 202 and a desorption zone 203. One of the branches leads to the adsorption zone 201 of the concentration rotor 2. The VOC waste gas flowing in this branch is further adsorbed and then blown to the outside atmosphere by the drive of the adsorption fan 701. The other branch leads to the cooling zone 202 of the concentration rotor 2. After passing through the cooling zone 202, it is heated by the desorption heat exchanger 4 and then leads to the desorption zone 203. The primary heating pipe of the desorption heat exchanger 4 is connected to the combustion chamber 304, so that the combustion chamber 304 provides heat to heat the connecting channel between the cooling zone 202 and the desorption zone 203. The hot gas in the primary heating pipe is generated after the VOC is oxidized in the combustion chamber 304 and can be directly discharged to the outside atmosphere. After passing through the desorption zone 203 of the concentrating rotor 2, the VOCs previously adsorbed on the concentrating rotor 2 are desorbed, particularly those with high boiling points. The desorbed VOCs are then purged by the negative pressure of the desorption blower 703 and mixed with fresh air a into the mixing box 9. The RTO blower 704 then blows the VOCs to be combusted, mixing with the fresh air, into the RTO furnace 3 for combustion and purification. Heating by the desorption heat exchanger 4 effectively prevents the accumulation of high-boiling-point VOCs on the concentrating rotor 2.

[0045] like Figure 2 and 3 As shown, Figure 2 This is a sectional front view of the RTO furnace 3. Figure 3 It is a cross-sectional left view of the RTO furnace 3. The RTO furnace 3 includes a combustion chamber 304 and a regenerator. The combustion chamber 304 has a cavity for burning VOC and discharging it to the outside atmosphere. The number of the regenerators is three or more. Each of the regenerators includes a first regenerator 311 and a second regenerator 312 separated from each other. Figure 4 As shown, Figure 4 This is a view of the first regenerator 301 of the RTO furnace 3, taken along the AA axis. The upstream portion of the first regenerator 311 is connected to the downstream channel of the desorption zone 203, allowing the desorbed VOC and outside air mixture to be heated by the regenerator, making it easier to burn in the combustion chamber 304. The burned gas is converted into harmless substances such as carbon dioxide (CO2) and water vapor (H2O), which can then be discharged into the atmosphere. The second regenerator 312 is connected to the outside air. Specifically, fresh air can be heated by the high-temperature purge heat exchanger 6 and then connected to the fresh air channel of the second regenerator 312, as well as the air supply channel connecting the fresh air channel to the outside atmosphere. The air supply channel discharges the VOC combustion gas into the atmosphere.

[0046] There are two beneficial effects of setting up two heat storage bodies. One is that the first heat storage body 311 and the second heat storage body 312 are fed with air through different pipes at the bottom, and are separated in the middle by heat insulation cotton 313 to prevent cross-draft. The first heat storage body 311 has a larger flow area and is fed with air through a bottom pipe, which is used to oxidize the high-concentration exhaust gas desorbed from the rotor. The second heat storage body 312 has a smaller flow area and is fed with air through a bypass pipe, which is used to oxidize the high-concentration and high-boiling-point exhaust gas desorbed from the molecular sieve regenerator in the molecular sieve desorption box 5. The gas passing through the first heat storage body 311 and the second heat storage body 312 enters the combustion chamber 304 together for combustion and decomposition. After decomposition, it enters another heat storage bed layer from the combustion chamber 304 to recover heat, and then the air is discharged from two different pipes respectively. Since the second heat storage body 312 processes waste gas with a high boiling point, the lower low-temperature area of ​​the second heat storage body 312 may be clogged. Therefore, it is regularly placed in the molecular sieve desorption box 5 and purged with high-temperature (300-550°C) gas heated in the oxidation chamber. This can effectively prevent the second heat storage body 312 from being clogged and avoid the waste of manpower and material resources caused by regular replacement of the heat storage body.

[0047] Secondly, the above-mentioned high-temperature purge heat exchanger 6 can adopt a plate heat exchanger, which is mainly used for heat exchange between the high-temperature hot air in the oxidation chamber and the fresh air to increase the temperature. The hot air after the temperature is increased (300-550°C) can be divided into two parts, which are switched by valve 8. A part of the hot air enters the molecular sieve desorption box 5, which is used to regenerate the columnar or extruded molecular sieve in the filter module 101, and then blown into the second heat storage body 312. The other part of the hot air does not pass through the molecular sieve desorption box 5, but is directly used to regularly purge the second heat storage body 312, so that the high-boiling point exhaust gas condensed on the second heat storage body 312 is decomposed at high temperature.

[0048] so, Figure 1As shown in FIG, the structure in which the second thermal storage body 312 is connected to the outside air includes a fresh air channel for heating fresh air a through the high-temperature purge heat exchanger 6 and then introducing it into the second thermal storage body 312, and an air supply channel connecting the fresh air channel and the outside atmosphere, the air supply channel exhausting the gases after VOC combustion to the atmosphere; the primary heat supply pipe of the high-temperature purge heat exchanger 6 is connected to the combustion chamber 304. In the structure in which the second thermal storage body 312 is connected to the outside air, the fresh air, after being heated by the high-temperature purge heat exchanger 6, can be introduced into the molecular sieve desorption box 5, which can accommodate a columnar or extruded molecular sieve, and the columnar or extruded molecular sieve is desorbed and regenerated by the purge of the heated fresh air.

[0049] like Figure 1 As shown, when the VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances of the present invention is in operation, industrial waste gas b is pre-filtered through pretreatment section 1 and then split into two branches. One branch passes through adsorption zone 201 of concentrating rotor 2 and is discharged to the atmosphere. The other branch passes through cooling zone 202 of concentrating rotor 2 and is heated by desorption heat exchanger 4. It then passes through desorption zone 203 of concentrating rotor 2 to desorb VOCs on concentrating rotor 2. The air then mixes with fresh air and passes through first thermal storage medium 311 into combustion chamber 304. After combustion in combustion chamber 304, it is discharged to the atmosphere. Fresh air a entering combustion chamber 304 also has two other independent routes. One is blown in by RTO purge blower 702, passes through first thermal storage medium 311, and enters combustion chamber 304. The other is blown in by high-temperature purge blower 705, is heated by high-temperature purge heat exchanger 6, and can be split into two or not split at all, and then passes through second thermal storage medium 312 into combustion chamber 304. When the fresh air blown in by the high-temperature purge blower 705 is divided into two paths, one of the branches enters the molecular sieve desorption box 5 to desorb and regenerate the columnar or extruded molecular sieve replaced in the pretreatment section 1. The route from the combustion chamber 304 to the atmosphere can include a path that provides a heat source to the desorption heat exchanger 4 and the high-temperature purge heat exchanger 6, as well as a path connected to the first heat storage body 311 and a path connected to the second heat storage body 312. The number of heat storage chambers of the present invention is three or more, such as Figure 1As shown, the valve 8 for the fresh air blown in by the RTO purge fan 702 upstream of the first heat storage chamber 301 and entering the combustion chamber 304 through the first heat storage body 311, as well as the fresh air blown in by the high-temperature purge fan 705 and entering the combustion chamber 304 through the second heat storage body 312 after being heated by the high-temperature purge heat exchanger 6, can be opened, and the valve 8 on the air outlet passage can be closed; the valve 8 on the fresh air collection passage connected to the upstream of the second heat storage chamber 302 can be closed, and the passage to the atmosphere connected to the first heat storage body 311 and the passage to the atmosphere connected to the second heat storage body 312 can be opened; the valve 8 on the fresh air collection passage and the valve 8 on the air discharge passage on the third heat storage chamber 303 can be selectively opened or fully closed. When the valve 8 on the fresh air collection passage and the valve 8 on the exhaust passage of the third regenerator 303 are both closed, only the first regenerator 301 and the second regenerator 302 are used for gas circulation, and the third regenerator 303 is in standby mode. When the valve 8 on the fresh air collection passage of the third regenerator 303 is opened, the valve 8 on the exhaust passage is closed, and the third regenerator 303 functions similarly to the first regenerator 301, primarily for the input of fresh air. When the valve 8 on the fresh air collection passage of the third regenerator 303 is closed, the valve 8 on the exhaust passage is opened, and the third regenerator 303 functions similarly to the second regenerator 302, primarily for the exhaust of combustion gases. Furthermore, it is easy to understand that each of the aforementioned regenerators can be switched between inputting fresh air and exhausting combustion gases by opening the valve 8. The functions of the various regenerators can be interchanged, allowing for the rotational use of different regenerators. This process of interchangeable regenerator functions also facilitates the desorption of VOCs attached to the regenerator, preventing clogging of the regenerator and improving efficiency.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances, characterized by: The VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances sequentially passes the VOC waste gas through a pretreatment section (1) provided with a plurality of filter modules (101) and a concentration rotor (2), wherein the concentration rotor (2) is provided with an adsorption zone (201), a cooling zone (202) and a desorption zone (203), and a channel leading out of the desorption zone (203) passes the VOC desorbed from the concentration rotor (2) into an RTO furnace (3) for oxidative combustion; at least part of the plurality of filter modules (101) comprises a columnar or extruded molecular sieve; The RTO furnace (3) includes a combustion chamber (304) and a regenerator, wherein the combustion chamber (304) has a cavity for burning VOC and discharging the VOC to the outside atmosphere, and the number of the regenerators is three or more, and each regenerator includes a first regenerator (311) and a second regenerator (312) that are separated, wherein the upstream of the first regenerator (311) is connected to the downstream channel of the desorption zone (203), and the second regenerator (312) is connected to the outside air; The structure for connecting the second heat storage body (312) with the outside air comprises a fresh air channel for heating fresh air through the high-temperature purge heat exchanger (6) and then connecting the fresh air channel to the outside air, and an air supply channel connecting the fresh air channel and the outside air, wherein the air supply channel discharges the gas after the VOC combustion to the atmosphere; the primary heat supply pipe of the high-temperature purge heat exchanger (6) is connected to the combustion chamber (304); In the structure in which the second heat storage body (312) is connected to the outside air, fresh air is heated by the high-temperature purge heat exchanger (6) and then passed into the molecular sieve desorption box (5); the molecular sieve desorption box (5) can accommodate the columnar or extruded molecular sieves in the plurality of stages of filter modules (101), and the VOCs adsorbed on the columnar or extruded molecular sieves are desorbed by the fresh air purge, and the desorbed VOCs enter the combustion chamber (304) through the second heat storage body (312); the molecular sieve desorption box (5) can accommodate the second heat storage body (312), and the VOCs adsorbed on the second heat storage body (312) are desorbed by the fresh air purge.

2. The VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances according to claim 1 is characterized in that: A desorption heat exchanger (4) is provided on the communication channel between the cooling zone (202) and the desorption zone (203), and a primary heat supply pipe of the desorption heat exchanger (4) is communicated with the combustion chamber (304), so that the combustion chamber (304) provides heat to heat the communication channel between the cooling zone (202) and the desorption zone (203).

3. The VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances according to claim 2 is characterized in that: The downstream of the desorption zone (203) channel is connected to fresh air, so that the VOC to be burned is mixed with the fresh air and then flows into the RTO furnace (3).

4. The VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances according to claim 1 is characterized in that: Fresh air is passed into the high-temperature purge heat exchanger (6) through a high-temperature purge blower (705).

5. The VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances according to claim 1 is characterized in that: The plurality of filter modules (101) of the pre-processing section (1) include a main filter module (101) and a backup filter module (101), and the main filter module (101) and the backup filter module (101) are arranged in parallel in two channels.

6. The VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances according to claim 1 is characterized in that: An adsorption fan (701) for discharging VOC waste gas into the atmosphere is provided on the passage leading out of the adsorption zone (201).

7. The VOC waste gas treatment system with in-situ regeneration capable of treating high-boiling-point substances according to claim 1 is characterized in that: An RTO purge fan (702) is also provided upstream of the first heat storage body (311) to allow fresh air to pass through the first heat storage body (311) and be blown into the combustion chamber (304).

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