A method and apparatus for synergistic removal of volatile organic compounds and carbon dioxide

Abstract

The application discloses a method for synergistically removing volatile organic compounds and carbon dioxide, comprising: catalytic combustion of a first part of volatile organic compounds in a catalytic combustion-CO2 capture device, simultaneous absorption of CO2 generated by combustion and tail gas by a CO2 adsorbent for carbonation reaction, the tail gas comprising CO2 generated by combustion of a second part of volatile organic compounds, and combustion heat energy serving as power for carbonation reaction of the CO2 adsorbent; catalytic combustion of the second part of volatile organic compounds in a catalytic combustion-regeneration device, calcination of the carbonated CO2 adsorbent to release absorbed CO2, combustion heat energy serving as power for calcination, and the carbonated CO2 adsorbent being sent into the catalytic combustion-regeneration device for calcination, and the CO2 adsorbent obtained after calcination being sent back to the catalytic combustion-CO2 capture device for recycling. The application also discloses a device for realizing the method. The application couples catalytic combustion of volatile organic compounds and CO2 capture process, synergistically removes volatile organic compounds and carbon dioxide, and realizes zero carbon emission.

Description

Technical Field

[0001] This invention relates to a method and apparatus for the synergistic removal of volatile organic compounds and carbon dioxide, belonging to the field of waste gas purification technology. Background Technology

[0002] Volatile organic compounds (VOCs) generally refer to organic compounds with a saturated vapor pressure greater than 70 Pa at room temperature or a boiling point below 260 °C under standard atmospheric pressure. They mainly include alkanes, hydrocarbons, esters, alcohols, and benzene compounds. VOCs are a major component of air pollutants, and their large-scale emissions lead to environmental problems such as smog, photochemical smog, ozone layer depletion, and the greenhouse effect. Furthermore, VOCs can irritate the skin, respiratory system, and circulatory system, and affect the heart and nervous system. Prolonged exposure to such environments can lead to serious health problems and may even cause cancer.

[0003] Volatile organic compounds (VOCs) mainly originate from industrial processes such as papermaking, paint production, rubber processing, and adhesive production. Currently, industrial VOC treatment technologies primarily include absorption, adsorption, catalytic combustion, biodegradation, and photocatalytic oxidation. Among these, catalytic combustion offers advantages such as low operating temperature (200–500℃), high purification efficiency, and minimal secondary pollution. Under the action of a catalyst, it can degrade VOCs into non-toxic and harmless substances such as CO2 and H2O, demonstrating promising application prospects.

[0004] CO2 capture and improved energy efficiency are both crucial pathways to achieving the "dual carbon" goal. Volatile organic compounds (VOCs) decompose into CO2 and H2O during catalytic combustion, generating significant CO2 emissions. How to efficiently capture this CO2 and achieve zero carbon emissions in VOC treatment is a pressing issue for the VOC treatment industry to address in order to achieve its "dual carbon" goal. Furthermore, how to fully utilize the thermal energy from catalytic combustion to improve energy efficiency is another critical issue for the VOC treatment industry to resolve in achieving its "dual carbon" goal. Summary of the Invention

[0005] To address the aforementioned deficiencies in the prior art, the present invention aims to provide a method for the synergistic removal of volatile organic compounds (VOCs) and carbon dioxide, thereby solving the problem of how to utilize the combustion heat energy of VOCs to capture the generated CO2. Another objective of the present invention is to provide an apparatus for the synergistic removal of VOCs and carbon dioxide, thereby realizing a method for the synergistic removal of VOCs and carbon dioxide.

[0006] The technical solution of this invention is as follows: A method for synergistic removal of volatile organic compounds (VOCs) and carbon dioxide, comprising: a first portion of VOCs undergoing catalytic combustion in a catalytic combustion-CO2 capture device, wherein a CO2 adsorbent in the catalytic combustion-CO2 capture device simultaneously absorbs the CO2 generated from the catalytic combustion of the first portion of VOCs and the incoming tail gas for a carbonation reaction, wherein the tail gas includes the CO2 generated from the catalytic combustion of a second portion of VOCs, and the combustion heat energy of the first portion of VOCs powers the carbonation reaction of the CO2 adsorbent; the second portion of VOCs undergoing catalytic combustion in a catalytic combustion-regeneration device, wherein the carbonated CO2 adsorbent in the catalytic combustion-regeneration device is calcined to release the absorbed CO2, the combustion heat energy of the second portion of VOCs powers the calcination, the carbonated CO2 adsorbent is sent to the catalytic combustion-regeneration device for calcination, and the CO2 adsorbent obtained after calcination is returned to the catalytic combustion-CO2 capture device for recycling.

[0007] Furthermore, the pressure in the catalytic combustion-CO2 capture device is atmospheric pressure, and the reaction temperature is controlled at 200-400℃.

[0008] Furthermore, the reaction temperature is adjusted by controlling the amounts of the first portion of volatile organic compounds, the exhaust gas, the catalyst for catalytic combustion, and the CO2 adsorbent in the catalytic combustion-CO2 capture device.

[0009] Furthermore, the pressure in the catalytic combustion-regeneration device is atmospheric pressure, and the calcination temperature is controlled at 300–500°C.

[0010] Furthermore, the calcination temperature is adjusted by controlling the amount of the second portion of volatile organic compounds, the catalyst for catalytic combustion, and the carbonated CO2 adsorbent in the catalytic combustion-regeneration device.

[0011] Furthermore, the CO2 generated by the catalytic combustion of the second part of volatile organic compounds is sent to the catalytic combustion-CO2 capture device after the temperature is regulated by heat exchange.

[0012] Furthermore, the catalyst for catalytic combustion is a Pt, Pd, Rh, or Ru noble metal catalyst or a metal oxide catalyst containing Ce, Mn, Cu, or Co, and the CO2 adsorbent is a magnesium-based adsorbent or a hydrotalcite adsorbent. The magnesium-based adsorbent is MgCO3 or a natural mineral, waste, or a mixture of natural minerals and waste with MgO / Mg(OH)2 / MgCO3 as the main component.

[0013] Furthermore, in the catalytic combustion-CO2 capture device, the catalyst of catalytic combustion and the carbonated CO2 adsorbent are separated after heat exchange and cooling, and the catalyst of catalytic combustion is reused. In the catalytic combustion-regeneration device, the catalyst of catalytic combustion is reused after heat exchange and cooling.

[0014] Another technical solution of the present invention is: a device for synergistic removal of volatile organic compounds and carbon dioxide, comprising a catalytic combustion-CO2 capture device and a catalytic combustion-regeneration device. The catalytic combustion-CO2 capture device is used for the catalytic combustion of a first portion of volatile organic compounds and the simultaneous absorption of CO2 generated from the combustion of the first portion of volatile organic compounds and the introduced tail gas by a CO2 adsorbent for a carbonation reaction. The catalytic combustion-regeneration device is used for the catalytic combustion of a second portion of volatile organic compounds and the calcination of the carbonated CO2 adsorbent. The tail gas includes CO2 generated from the combustion of the second portion of volatile organic compounds. The combustion heat energy of the first portion of volatile organic compounds provides energy for the carbonation reaction of the CO2 adsorbent. The solid emission port of the catalytic combustion-CO2 capture device is connected to the calcination chamber of the catalytic combustion-regeneration device. The catalytic combustion-regeneration device is provided with a catalytic combustion chamber. The tail gas emission port of the catalytic combustion chamber is connected to the catalytic combustion-CO2 capture device. The solid emission port of the calcination chamber of the catalytic combustion-regeneration device is connected to the catalytic combustion-CO2 capture device.

[0015] Further, the device includes heat exchangers A, B, C, D, E, and F, and a separation device. The exhaust port of the catalytic combustion-CO2 capture device is connected to heat exchanger A. The solid emission port of the catalytic combustion-CO2 capture device is connected to the separation device via heat exchanger B. The first separation port of the separation device is connected to the catalytic combustion-CO2 capture device, and the second separation port of the separation device is connected to the calcination chamber of the catalytic combustion-regeneration device. The exhaust port of the calcination chamber of the catalytic combustion-regeneration device is connected to heat exchanger C. The exhaust port of the catalytic combustion chamber of the catalytic combustion-regeneration device is connected to the catalytic combustion-CO2 capture device via heat exchanger D. The solid emission port of the calcination chamber of the catalytic combustion-regeneration device is connected to the catalytic combustion-CO2 capture device via heat exchanger E. The solid emission port of the catalytic combustion chamber of the catalytic combustion-regeneration device is connected to the catalytic combustion chamber of the catalytic combustion-regeneration device via heat exchanger F. The heat energy obtained from the reaction process in the catalytic combustion-CO2 capture device and the catalytic combustion-regeneration device can be collected and utilized through various heat exchangers. At the same time, the reaction temperature in the catalytic combustion-CO2 capture device and the catalytic combustion-regeneration device can be easily controlled.

[0016] The advantages of this invention compared to the prior art are:

[0017] By fully utilizing the heat generated during the catalytic combustion process for treating volatile organic compounds (VOCs), energy efficiency is improved. In the catalytic combustion-CO2 capture unit, the temperature field generated by the catalytic combustion of VOCs drives the carbonation reaction of the adsorbent; in the catalytic combustion-regeneration unit, the temperature field generated by the catalytic combustion of VOCs drives the calcination and decomposition reaction of the adsorbent. The adsorbent is recycled between the catalytic combustion-CO2 capture unit and the catalytic combustion-regeneration unit, coupling the catalytic combustion method for VOCs with the adsorbent-based CO2 capture process to synergistically remove VOCs and carbon dioxide, achieving zero carbon emissions in the VOCs removal process.

[0018] The catalytic combustion of volatile organic compounds and CO2 capture are carried out in the same reaction unit (i.e., catalytic combustion-CO2 capture unit). On the one hand, heat can be utilized in situ to improve energy utilization efficiency. On the other hand, it can effectively reduce the number of reaction units, reduce the equipment footprint, reduce investment costs, and increase economic feasibility. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the device structure for the synergistic removal of volatile organic compounds and carbon dioxide in Example 1.

[0020] Figure 2 This is a schematic diagram of the device structure for the synergistic removal of volatile organic compounds and carbon dioxide in Example 2. Detailed Implementation

[0021] The present invention will be further described below with reference to embodiments, but these are not intended to limit the scope of the invention.

[0022] Example 1

[0023] Please combine Figure 1As shown, the apparatus for synergistic removal of volatile organic compounds (VOCs) and carbon dioxide involved in this embodiment includes a catalytic combustion-CO2 capture device 101, a catalytic combustion-regeneration device 102, a carbonation adsorbent storage tank 103, and a calcination adsorbent storage tank 104. The catalytic combustion-CO2 capture device 101 is a fluidized bed reactor, equipped with a tail gas inlet 1011, a VOCs inlet 1012, a solids discharge port 1013, a solids input port 1014, and a tail gas discharge port 1015. The catalytic combustion-regeneration device 102 is a shell-and-tube arrangement divided into an inner layer and an outer layer. The inner layer is a calcination chamber 102a, equipped with a solids discharge port 102a1, a solids input port 102a2, and a carbon dioxide enrichment discharge port 102a3. The outer layer is a catalytic combustion chamber 102b, equipped with a VOCs inlet 102b1 and a tail gas discharge port 102b2.

[0024] The solid emission port 1013 of the catalytic combustion-CO2 capture device 101 is connected to the carbonation adsorbent storage tank 103, which in turn is connected to the solid inlet 102a2 of the inner layer of the catalytic combustion-regeneration device 102. The solid emission port 102a1 of the calcination chamber 102a of the catalytic combustion-regeneration device 102 is connected to the calcination adsorbent storage tank 104, which in turn is connected to the solid inlet 1014 of the catalytic combustion-CO2 capture device 101, forming a circulation loop for the CO2 adsorbent. The exhaust gas emission port 102b2 of the catalytic combustion chamber 102b of the catalytic combustion-regeneration device 102 is connected to the exhaust gas inlet 1011 of the catalytic combustion-CO2 capture device 101.

[0025] The method for synergistic removal of volatile organic compounds and carbon dioxide using the above-mentioned device is as follows:

[0026] The first batch of volatile organic compounds enters the catalytic combustion-CO2 capture device 101 through the volatile organic compound inlet 1012 and undergoes catalytic combustion under catalytic conditions. The catalyst used is a platinum-based catalyst with Pt as the active component and a particle size of 100–180 μm. It should be noted that the catalyst can be a noble metal catalyst with noble metals such as Pt, Pd, Rh, and Ru as the active component, or a non-noble metal oxide catalyst with non-noble metal oxides such as Ce, Mn, Cu, and Co as the active component, with a particle size of 100–300 μm.

[0027] The catalytic combustion-CO2 capture device 101 also contains a CO2 adsorbent. In this embodiment, the CO2 adsorbent is a magnesium-based adsorbent with MgO as the active ingredient and a particle size of 200-250 μm. The CO2 and H2O generated after the catalytic combustion of the first portion of volatile organic compounds, and the CO2 in the tail gas (also containing CO2) after the catalytic combustion of the second portion of volatile organic compounds from the catalytic combustion-regeneration device 102, immediately undergo an in-situ carbonation reaction with the active ingredient MgO of the CO2 adsorbent to generate MgCO3. The reaction pressure inside the catalytic combustion-CO2 capture device 101 is atmospheric pressure. The temperature inside the catalytic combustion-CO2 capture device 101 is adjusted and stabilized at 350°C by regulating the intake flow rate of the first portion of volatile organic compounds, the intake flow rate of the tail gas from the catalytic combustion-regeneration device 102, the amount of platinum-based catalyst entering, and the amount of CO2 adsorbent entering. MgCO3 and platinum-based catalyst are discharged from solid discharge port 1013 to carbonation adsorbent storage tank 103, and then enter calcination chamber 102a from solid input port 102a2 of catalytic combustion-regeneration device 102. The tail gas of catalytic combustion-CO2 capture device 101 has been decarbonized, and the decarbonized tail gas is discharged from tail gas discharge port 1015 of catalytic combustion-CO2 capture device 101.

[0028] The second batch of volatile organic compounds (VOCs) enters the catalytic combustion-regeneration device 102 through the VOC inlet 102b1 of the catalytic combustion chamber 102b. Catalytic combustion occurs under catalytic conditions. The catalyst can be the same as or different from the catalyst in the catalytic combustion-CO2 capture device 101. The carbon-containing exhaust gas after catalytic combustion is discharged from the exhaust outlet 102b2 of the catalytic combustion chamber 102b and then enters the catalytic combustion-CO2 capture device 101 through the exhaust inlet 1011 for carbon capture. The catalyst in the catalytic combustion chamber 102b can be reused. MgCO3 and platinum-based catalyst, fed from the carbonation adsorbent storage tank 103 into the calcination chamber 102a of the catalytic combustion-regeneration device 102, are calcined and decomposed into MgO and CO2 by the heat generated from the catalytic combustion of the second batch of VOCs. The reaction pressure within the catalytic combustion-regeneration unit 102 is atmospheric pressure. The temperature is stabilized at 450°C by controlling the inflow of volatile organic compounds (VOCs) into the second section, the amount of catalyst in the catalytic combustion chamber 102b, and the amount of MgCO3 entering the calcination chamber 102a. MgO and platinum-based catalyst are discharged from the solid discharge port 102a1 of the calcination chamber 102a to the calcined adsorbent storage tank 104, and then enter the catalytic combustion-CO2 capture unit 101 for the catalytic combustion of VOCs in the first section and for carbon capture. The CO2 obtained from calcination in the calcination chamber 102a of the catalytic combustion-regeneration unit 102 is discharged from the enriched carbon dioxide discharge port 102a3.

[0029] Example 2

[0030] Please combine Figure 2 As shown, the apparatus for synergistic removal of volatile organic compounds and carbon dioxide involved in this embodiment includes a catalytic combustion-CO2 capture device 201, a catalytic combustion-regeneration device 202, a carbonation adsorbent storage tank 203, a calcined adsorbent storage tank 204, a catalyst storage tank 205, heat exchangers A 206, B 207, B 208, D 209, E 210, F 219, one-way valves A 211, B 212, C 213, D 214, E 215, F 216, G 217, H 220, and a separation device 218.

[0031] The catalytic combustion-CO2 capture device 201 is a fluidized bed reactor, equipped with a tail gas inlet 2011, a volatile organic compound inlet 2012, a solids emission port 2013, a solids input port 2014, and a tail gas emission port 2015. The catalytic combustion-regeneration device 202 is a shell-and-tube arrangement consisting of an inner layer and an outer layer. The inner layer is a calcination chamber, equipped with a solids emission port 2021, a solids input port 2022, and a carbon dioxide enrichment emission port 2023. The outer layer is a catalytic combustion chamber, equipped with a volatile organic compound inlet 2024 and a tail gas emission port 2025.

[0032] The solids emission port 2013 of the catalytic combustion-CO2 capture device 201 is connected to the separation device 218 via heat exchanger B 207 and one-way valve A 211. The separation device 218 is a cyclone separator used to separate the carbonated CO2 adsorbent and the catalyst for catalytic combustion. The first separation port of the separation device 218 is connected to the catalyst storage tank 205, and the second separation port is connected to the carbonated adsorbent storage tank 203. The carbonated adsorbent storage tank 203 is connected to the solids inlet 2022 of the calcination chamber of the catalytic combustion-regeneration device 202 via one-way valve B 212. The catalyst storage tank 205 is connected to the solids inlet 2014 of the catalytic combustion-CO2 capture device 201 via one-way valve F 216. The exhaust port 2015 of the catalytic combustion-CO2 capture device 201 is connected to heat exchanger A 206.

[0033] The solid emission port 2021 of the calcination chamber of the catalytic combustion-regeneration unit 202 is connected to the calcination adsorbent storage tank 204 via heat exchanger E 210 and one-way valve D 214. The calcination adsorbent storage tank 204 is connected to the solid emission port 2014 of the catalytic combustion-CO2 capture unit 201 via one-way valve G 217. The exhaust gas emission port 2023 of the catalytic combustion chamber of the catalytic combustion-regeneration unit 202 is connected to the exhaust gas inlet 2011 of the catalytic combustion-CO2 capture unit 201 via heat exchanger D 209 and one-way valve H 220. The catalytic combustion chamber is also provided with a catalyst inlet 2026 and a catalyst outlet 2027. The catalyst outlet 2027 is connected to the catalyst storage tank 205 via heat exchanger F 219 and one-way valve E 215. The catalyst storage tank 205 is connected to the catalyst inlet 2026 of the catalytic combustion chamber via one-way valve C 213. The carbon dioxide enrichment port 2023 of the calcination chamber of the catalytic combustion-regeneration unit 202 is connected to a heat exchanger B 208.

[0034] The method for synergistic removal of volatile organic compounds and carbon dioxide using the above-mentioned device is as follows:

[0035] The first part of the volatile organic compounds enters the catalytic combustion-CO2 capture device 201 from the volatile organic compound inlet 2012 and undergoes catalytic combustion under catalytic conditions. The catalyst used is a rhodium-based catalyst with Rh as the active ingredient and a particle size of 120-150 μm.

[0036] The catalytic combustion-CO2 capture device 201 also contains a CO2 adsorbent. In this embodiment, the CO2 adsorbent is a hydrotalcite adsorbent with a mixture of hydrotalcites as the active ingredient, and its general formula can be expressed as: where M 2+ Mg 2+ Ni 2+ Zn 2+ Cu 2 + Co 2+ or Mn 2+ M 3+ For Al 3+ Fe 3+ Co 3+ or Cr 3+ A n- CO3 2- SO4 2- NO3 - Cl - or OH -The x value is typically 0.17–0.33, and the particle size is 180–250 μm. The CO2 and H2O generated from the catalytic combustion of the first part of volatile organic compounds, and the CO2 in the tail gas (also containing CO2) from the catalytic combustion-regeneration unit 202, immediately undergo in-situ carbonation with the hydrotalcite adsorbent. The reaction pressure within the catalytic combustion-CO2 capture unit 201 is atmospheric pressure. The temperature within the catalytic combustion-CO2 capture unit 201 is regulated and stabilized at 400℃ by controlling the intake flow of the first part of volatile organic compounds, the tail gas intake flow from the catalytic combustion-regeneration unit 202, the amount of rhodium-based catalyst entering, and the amount of hydrotalcite adsorbent entering. After carbonation, the hydrotalcite adsorbent and rhodium-based catalyst are discharged from the solid discharge port 2013, sequentially passing through heat exchanger B 207 and one-way valve A 211 before entering the separation unit 218 for separation. The carbonated hydrotalcite adsorbent separated by separator 218 enters the carbonated adsorbent storage tank 203, and then enters the calcination chamber of catalytic combustion-regeneration unit 202 through solid inlet 2022 via one-way valve B 212. The rhodium-based catalyst separated by separator 218 enters the catalyst storage tank 205, and then returns to catalytic combustion-CO2 capture unit 201 through one-way valve F 216. The exhaust gas from catalytic combustion-CO2 capture unit 201 has been decarbonized, and the decarbonized exhaust gas is discharged from exhaust outlet 2015 of catalytic combustion-CO2 capture unit 201 through heat exchanger A 206.

[0037] The second part of the volatile organic compounds (VOCs) enters the catalytic combustion-regeneration unit 202 from the VOC inlet 2024 of the catalytic combustion chamber, where they undergo catalytic combustion under catalytic conditions. The catalyst is also a rhodium-based catalyst. The carbon-containing exhaust gas after catalytic combustion exits from the exhaust port 2025 of the catalytic combustion chamber of the catalytic combustion-regeneration unit 202, then passes through heat exchanger D 209 and one-way valve H 220 before entering the catalytic combustion-CO2 capture unit 201 from the exhaust inlet 2011 for carbon capture. The catalyst in the catalytic combustion chamber exits from catalyst outlet 2027 through heat exchanger F 219 and one-way valve E 215 into catalyst storage tank 205, and then returns to the catalytic combustion chamber of the catalytic combustion-regeneration unit 202 through one-way valve C 213 from catalyst inlet 2026 for reuse.

[0038] The carbonated hydrotalcite adsorbent, fed from the carbonated adsorbent storage tank 203 into the calcination chamber of the catalytic combustion-regeneration unit 202, is calcined and decomposed into hydrotalcite adsorbent and CO2 under the heat generated by the catalytic combustion of volatile organic compounds in the second part. The reaction pressure inside the catalytic combustion-regeneration unit 202 is atmospheric pressure. The temperature is stabilized at 500℃ by controlling the inlet flow rate of volatile organic compounds in the second part, the amount of catalyst in the catalytic combustion chamber, and the amount of carbonated hydrotalcite adsorbent entering the calcination chamber. The hydrotalcite adsorbent is discharged from the solid discharge port 2021 of the calcination chamber through the heat exchanger E 210 and the one-way valve D 214 to the calcined adsorbent storage tank 204, and then enters the catalytic combustion-CO2 capture unit 201 through the one-way valve G 217 for use in the catalytic combustion of volatile organic compounds in the first part and carbon capture. The CO2 obtained from calcination in the calcination chamber of the catalytic combustion-regeneration unit 202 is discharged from the enriched carbon dioxide emission port 2023 through the heat exchanger B 208.

[0039] Based on the specific structures and processes of the two embodiments described above, if catalytic combustion and CO2 capture are separated, that is, CO2 capture is performed on the exhaust gas after catalytic combustion, then firstly, a reaction device for CO2 capture needs to be added to the existing catalytic combustion device, which increases investment costs and the footprint of the entire system; secondly, energy needs to be specifically supplied from the outside for the CO2 capture process to maintain the temperature required for the carbonation reaction, which increases the energy loss of the entire system; finally, to improve system efficiency, energy recovery from the catalytic combustion process is also required, which increases investment and complicates the system, and inevitably results in some energy loss during the recovery process. Therefore, the two embodiments described above integrate catalytic combustion and CO2 capture into a single reaction device (catalytic combustion-CO2 capture device 201), which can fully utilize the catalytic combustion device in the existing volatile organic compound catalytic combustion process, reduce investment costs, make the entire system more compact, reduce the footprint, and efficiently utilize the heat released during the catalytic combustion process for CO2 capture, avoiding the external energy input required for CO2 capture and the energy loss during energy recovery in the catalytic combustion process.

Claims

1. A method for synergistic removal of volatile organic compounds and carbon dioxide, characterized in that, include: The first portion of volatile organic compounds undergoes catalytic combustion in a catalytic combustion-CO2 capture device. In this device, a CO2 adsorbent simultaneously absorbs the CO2 generated from the catalytic combustion of the first portion of volatile organic compounds and the incoming tail gas for a carbonation reaction. The tail gas includes CO2 generated from the catalytic combustion of the second portion of volatile organic compounds. The combustion heat energy of the first portion of volatile organic compounds powers the carbonation reaction of the CO2 adsorbent. The pressure in the catalytic combustion-CO2 capture device is atmospheric pressure, and the reaction temperature is controlled between 200 and 400°C. 0℃; The second part of volatile organic compounds undergoes catalytic combustion in the catalytic combustion-regeneration device. The carbonated CO2 adsorbent in the catalytic combustion-regeneration device is calcined to release the absorbed CO2. The combustion heat energy of the second part of volatile organic compounds powers the calcination. The carbonated CO2 adsorbent is sent to the catalytic combustion-regeneration device for calcination. The pressure in the catalytic combustion-regeneration device is atmospheric pressure, and the calcination temperature is controlled at 300~500℃. The CO2 adsorbent obtained after calcination is returned to the catalytic combustion-CO2 capture device for recycling.

2. The method for synergistic removal of volatile organic compounds and carbon dioxide according to claim 1, characterized in that, The reaction temperature is adjusted by controlling the amounts of the first portion of volatile organic compounds, the exhaust gas, the catalyst for catalytic combustion, and the CO2 adsorbent in the catalytic combustion-CO2 capture device.

3. The method for synergistic removal of volatile organic compounds and carbon dioxide according to claim 1, characterized in that, The calcination temperature is adjusted by controlling the amount of the second part of volatile organic compounds, the catalyst of the catalytic combustion, and the carbonated CO2 adsorbent in the catalytic combustion-regeneration device.

4. The method for synergistic removal of volatile organic compounds and carbon dioxide according to claim 1, characterized in that, The CO2 generated by the catalytic combustion of the second part of volatile organic compounds is sent to the catalytic combustion-CO2 capture device after the temperature is regulated by heat exchange.

5. The method for synergistic removal of volatile organic compounds and carbon dioxide according to claim 1, characterized in that, The catalyst for catalytic combustion is a Pt, Pd, Rh or Ru noble metal catalyst or a metal oxide catalyst containing Ce, Mn, Cu or Co, and the CO2 adsorbent is a magnesium-based adsorbent or a hydrotalcite adsorbent.

6. The method for synergistic removal of volatile organic compounds and carbon dioxide according to claim 1, characterized in that, In the catalytic combustion-CO2 capture device, the catalyst for catalytic combustion and the carbonated CO2 adsorbent are separated after heat exchange and cooling, and the catalyst for catalytic combustion is reused. In the catalytic combustion-regeneration device, the catalyst for catalytic combustion is reused after heat exchange and cooling.

7. An apparatus for synergistic removal of volatile organic compounds and carbon dioxide, characterized in that, The device includes a catalytic combustion-CO2 capture device and a catalytic combustion-regeneration device. The catalytic combustion-CO2 capture device is used for the catalytic combustion of a first portion of volatile organic compounds (VOCs) and the simultaneous absorption of CO2 generated from the catalytic combustion of the first portion of VOCs and the introduced tail gas by a CO2 adsorbent for a carbonation reaction. The catalytic combustion-regeneration device is used for the catalytic combustion of a second portion of VOCs and the calcination of the carbonated CO2 adsorbent. The tail gas includes CO2 generated from the catalytic combustion of the second portion of VOCs. The combustion heat energy of the first portion of VOCs provides energy for the carbonation reaction of the CO2 adsorbent. The solid emission port of the catalytic combustion-CO2 capture device is connected to the calcination chamber of the catalytic combustion-regeneration device. The catalytic combustion-regeneration device is equipped with a catalytic combustion chamber, and the tail gas emission port of the catalytic combustion chamber is connected to the catalytic combustion-CO2 capture device. The solid emission port of the calcination chamber of the catalytic combustion-regeneration device is connected to the catalytic combustion-CO2 capture device.

8. The apparatus for synergistic removal of volatile organic compounds and carbon dioxide according to claim 7, characterized in that, The device includes heat exchangers A, B, C, D, E, and F, and a separation device. The exhaust port of the catalytic combustion-CO2 capture device is connected to heat exchanger A. The solid emission port of the catalytic combustion-CO2 capture device is connected to the separation device via heat exchanger B. The first separation port of the separation device is connected to the catalytic combustion-CO2 capture device, and the second separation port of the separation device is connected to the calcination chamber of the catalytic combustion-regeneration device. The exhaust port of the calcination chamber of the catalytic combustion-regeneration device is connected to heat exchanger C. The exhaust port of the catalytic combustion chamber of the catalytic combustion-regeneration device is connected to the catalytic combustion-CO2 capture device via heat exchanger D. The solid emission port of the calcination chamber of the catalytic combustion-regeneration device is connected to the catalytic combustion-CO2 capture device via heat exchanger E. The solid emission port of the catalytic combustion chamber of the catalytic combustion-regeneration device is connected to the catalytic combustion chamber of the catalytic combustion-regeneration device via heat exchanger F.

Images