Chloroform tail gas recovery treatment system

Abstract

The invention discloses a chloroform tail gas recovery treatment system which comprises a gas-liquid separation device, a first condensing device, a membrane separation device, a second condensing device and an adsorption device, the gas-liquid separation device is provided with a tail gas inlet, a liquid outlet and a mixed gas outlet; the first condensing device is provided with a first condensing inlet which is connected with the liquid outlet; the membrane separation device is provided with a mixed gas inlet, a first gas outlet and a second gas outlet, and the mixed gas inlet is connected with the mixed gas outlet; the second condensation device is provided with a second condensation inlet and a second condensation outlet, the second condensation inlet is connected with the first gas outlet, and the second condensation outlet is connected with the gas-liquid separation device; the adsorption device is provided with an adsorption inlet and a discharge outlet, and the adsorption inlet is connected with the second gas outlet. The chloroform tail gas recovery treatment system provided by the embodiment of the invention has higher treatment efficiency on the chloroform tail gas, and can realize zero pollution discharge of chloroform tail gas treatment, thereby forming a harmless treatment system on the chloroform tail gas.

Description

Technical Field

[0001] The invention relates to the technical field of tail gas treatment systems, and in particular to a chloroform tail gas recovery and treatment system. Background Art

[0002] Chloroform is a key raw material in refrigerant production. Due to its high volatility, chloroform offgas is easily generated during storage, which can cause air pollution. Therefore, it needs to be treated. Related technologies use activated carbon to adsorb chloroform. However, in chloroform offgas with high humidity, water molecules preferentially occupy the activated carbon pores, resulting in a decrease in chloroform adsorption capacity and low off-gas treatment efficiency. Summary of the Invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention proposes a chloroform tail gas recovery and treatment system, which uses a "membrane separation + adsorption" method to treat the chloroform tail gas, with higher treatment efficiency. At the same time, zero pollution discharge of chloroform tail gas treatment can be achieved, thereby forming a harmless disposal system for chloroform tail gas.

[0005] The chloroform tail gas recovery and treatment system of an embodiment of the present invention includes a gas-liquid separation device, a first condensing device, a membrane separation device, a second condensing device and an adsorption device; the gas-liquid separation device has a tail gas inlet, a liquid outlet and a mixed gas outlet, and the tail gas inlet is for chloroform tail gas to enter; the first condensing device has a first condensation inlet, and the first condensation inlet is connected to the liquid outlet; the membrane separation device has a mixed gas inlet, a first gas outlet for chloroform gas to be discharged and a second gas outlet for air to be discharged, and the mixed gas inlet is connected to the mixed gas outlet; the second condensing device has a second condensation inlet and a second condensation outlet, the second condensation inlet is connected to the first gas outlet, and the second condensation outlet is connected to the gas-liquid separation device; the adsorption device has an adsorption inlet and a discharge port, and the adsorption inlet is connected to the second gas outlet.

[0006] In some embodiments, the chloroform tail gas recovery and treatment system further includes a first recovery tank, the first condensing device further has a first condensation outlet, and the first recovery tank is connected to the first condensation outlet.

[0007] In some embodiments, the chloroform tail gas recovery and treatment system further includes a first recovery pump, the first condensation outlet is connected to the first recovery tank through the first recovery pump, and a filter is provided between the first recovery pump and the first condensation outlet.

[0008] In some embodiments, the adsorption device is a resin adsorption device.

[0009] In some embodiments, the chloroform tail gas recovery and treatment system also includes a third condensing device, the third condensing device having a third condensation inlet, a gas phase outlet and a liquid phase outlet, the adsorption device having a desorption inlet and a desorption outlet for steam to enter, and the desorption outlet is connected to the third condensation inlet.

[0010] In some embodiments, the chloroform tail gas recovery and treatment system also includes a fourth condensing device and a wastewater tank, the fourth condensing device has a fourth condensing inlet and a fourth condensing outlet, the fourth condensing inlet is connected to the gas phase outlet, and the wastewater tank is connected to the fourth condensing outlet.

[0011] In some embodiments, the wastewater tank has a chloroform recovery port, and the chloroform tail gas recovery and treatment system further includes a second recovery tank connected to the chloroform recovery port.

[0012] In some embodiments, the wastewater tank further has a wastewater outlet, and the chloroform tail gas recovery and treatment system further includes a high-temperature cracking device, which is connected to the wastewater outlet.

[0013] In some embodiments, the chloroform tail gas recovery and treatment system also includes a circulating cooling device, which includes a circulating pump and a cooling water tank. The cooling water tank is connected to the liquid phase outlet of the third condensing device, the inlet of the circulating pump is connected to the cooling water tank, and the outlet of the circulating pump is connected to the desorption inlet of the adsorption device.

[0014] In some embodiments, the cooling water tank has a drain outlet, which is connected to the waste water tank.

[0015] In the chloroform tail gas recovery and treatment system of the embodiment of the present invention, the chloroform tail gas enters the gas-liquid separation device through the tail gas inlet, the liquid chloroform in the chloroform tail gas is separated from the gas by the gas-liquid separation device, the liquid chloroform is discharged from the liquid outlet and enters the first condensing device for condensation, the condensed liquid chloroform is discharged from the first condensing device and recycled as a refrigerant raw material; the gas is a mixed gas composed of air and gaseous chloroform, the mixed gas is discharged from the mixed gas outlet and enters the membrane separation device to separate the mixed gas; after passing through the membrane separation device, about 95% of the gaseous chloroform is discharged from the first gas outlet and enters the second condensing device for condensation, the gaseous chloroform is condensed into liquid, the liquid chloroform (carrying a small amount of gaseous chloroform) is discharged from the second condensing device and re-enters the gas-liquid separation tank, and after separation in the gas-liquid separation tank, is discharged from the liquid outlet and condensed by the first condensing device and recycled. Another 5% or so of gaseous chloroform is discharged from the second gas outlet along with the air and enters the adsorption device, which can adsorb the gaseous chloroform in the air, thereby completing the treatment of the chloroform tail gas. The qualified tail gas is discharged into the external environment through the discharge port.

[0016] The chloroform tail gas recovery and treatment system of the embodiment of the present invention adopts the "membrane separation + adsorption" method to treat the chloroform tail gas, which has higher treatment efficiency. At the same time, about 95% of the gaseous chloroform separated by the membrane separation device is condensed and recovered by the second condensing device, and the remaining about 5% of the gaseous chloroform is adsorbed by the adsorption device and then discharged into the outside air. In this way, zero pollution discharge of chloroform tail gas treatment can be achieved, so as to form a harmless disposal system for chloroform tail gas and reduce the safety and environmental risks of the treatment system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a schematic structural diagram of a chloroform tail gas recovery and treatment system according to an embodiment of the present invention.

[0018] Reference numerals:

[0019] 100. Chloroform tail gas recovery and treatment system;

[0020] 1. Gas-liquid separation device; 11. Tail gas inlet; 12. Mixed gas outlet; 13. Liquid outlet; 14. First condensing device; 141. First condensing inlet; 142. First condensing outlet; 15. First recovery pump; 16. First recovery tank;

[0021] 2. Membrane separation device; 21. Mixed gas inlet; 22. First gas outlet; 221. Vacuum pump; 23. Second gas outlet; 231. Exhaust gas fan;

[0022] 3. Second condensing device; 31. Second condensing inlet; 32. Second condensing outlet;

[0023] 4. Adsorption device; 41. Adsorption inlet; 42. Discharge port; 43. Desorption inlet; 44. Desorption outlet;

[0024] 5. Third condensing device; 51. Third condensing inlet; 52. Gas phase outlet; 53. Liquid phase outlet;

[0025] 6. Fourth condensing device; 61. Fourth condensing inlet; 62. Fourth condensing outlet;

[0026] 7. Wastewater tank; 71. Chloroform recovery port; 711. Second recovery pump; 712. Second recovery tank; 72. Wastewater outlet; 721. Wastewater pump; 722. High-temperature cracking unit;

[0027] 81. Circulation pump; 82. Cooling water tank; 821. Drain outlet. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0029] like Figure 1 As shown, the chloroform tail gas recovery and treatment system 100 of the embodiment of the present invention includes a gas-liquid separation device 1, a first condensing device 14, a membrane separation device 2, a second condensing device 3 and an adsorption device 4; the gas-liquid separation device 1 has a tail gas inlet 11, a liquid outlet 13 and a mixed gas outlet 12, and the tail gas inlet 11 is for chloroform tail gas to enter; the first condensing device 14 has a first condensation inlet 141 and a first condensation outlet 142, and the first condensation inlet 141 is connected to the liquid outlet 13 of the gas-liquid separation device 1; the membrane separation device 2 has a mixed gas inlet 21, a first gas outlet 22 for chloroform gas to be discharged and a second gas outlet 23 for air to be discharged, and the mixed gas inlet 21 is connected to the mixed gas outlet 12; the second condensing device 3 has a second condensation inlet 31 and a second condensation outlet 32, the second condensation inlet 31 is connected to the first gas outlet 22, and the second condensation outlet 32 ​​is connected to the tail gas inlet 11 of the gas-liquid separation device 1; the adsorption device 4 has an adsorption inlet 41 and a discharge port 42, and the adsorption inlet 41 is connected to the second gas outlet 23.

[0030] In the chloroform tail gas recovery and treatment system 100 according to the embodiment of the present invention, the chloroform tail gas enters the gas-liquid separator 1 through the tail gas inlet 11, and the liquid chloroform in the chloroform tail gas is separated from the gas by the gas-liquid separator 1. The liquid chloroform is discharged from the liquid outlet 13 and enters the first condensing device 14 for condensation. The condensed liquid chloroform is discharged from the first condensing device 14 and recycled as a refrigerant raw material. The gas is a mixed gas composed of air and gaseous chloroform. The mixed gas is discharged from the mixed gas outlet 12 and enters the membrane separation device 2 to separate the mixed gas. After passing through the membrane separation device 2, about 95% of the gaseous chloroform is discharged from the first gas outlet 22 and enters the second condensing device 3 for condensation, condensing the gaseous chloroform into a liquid state. The liquid chloroform (carrying a small amount of gaseous chloroform) is discharged from the second condensing device 3 and then re-enters the gas-liquid separator. After separation in the gas-liquid separator, it is discharged from the liquid outlet 13 and condensed by the first condensing device 14 for recycling. Another 5% or so of gaseous chloroform is discharged from the second gas outlet 23 along with the air and enters the adsorption device 4. The adsorption device 4 can adsorb the gaseous chloroform in the air, thereby completing the treatment of the chloroform tail gas. The treated tail gas is discharged into the external environment through the discharge port 42.

[0031] The chloroform tail gas recovery and treatment system 100 of the embodiment of the present invention adopts the "membrane separation + adsorption" method to treat the chloroform tail gas, which has higher treatment efficiency. At the same time, about 95% of the gaseous chloroform separated by the membrane separation device 2 is condensed and recovered by the second condensing device 3, and the remaining 5% of the gaseous chloroform is adsorbed by the adsorption device 4 and then discharged into the outside air. In this way, zero pollution discharge of chloroform tail gas treatment can be achieved, so as to form a harmless disposal system for chloroform tail gas and reduce the safety and environmental risks of the treatment system.

[0032] Optionally, the gas-liquid separation device 1 is a gas-liquid separator, such as a wire mesh gas-liquid separator, a packing gas-liquid separator, etc.

[0033] Thus, the separation of liquid and gaseous states in the chloroform tail gas can be achieved, so that the chloroform tail gas can be further processed.

[0034] Optionally, the membrane separation device 2 separates gaseous chloroform and air by utilizing a separation membrane having different permeation rates for different gases.

[0035] Optionally, the condensation temperature of the first condensing device 14 is 3°C to 5°C.

[0036] Optionally, the condensation temperature of the second condensing device 3 is 3°C to 5°C.

[0037] Thus, the gaseous chloroform can be condensed so as to recover and reuse the liquid chloroform.

[0038] Alternatively, as Figure 1 As shown, the chloroform tail gas recovery and treatment system 100 further includes a vacuum pump 221 , the inlet of the vacuum pump 221 is connected to the first gas outlet 22 of the membrane separation device 2 via a pipeline, and the outlet of the vacuum pump 221 is connected to the second condensation inlet 31 of the second condensation device 3 via a pipeline.

[0039] Thus, the gaseous chloroform separated by the membrane separation device 2 enters the second condensing device 3 for condensation under the action of the vacuum pump 221; wherein, when the gaseous chloroform passes through the vacuum pump 221, it is liquefied under the action of negative pressure, and the chloroform is partially vaporized after being discharged from the vacuum pump 221, and then condensed again by the second condensing device 3 to realize the recovery of liquid chloroform.

[0040] Alternatively, as Figure 1 As shown, the chloroform tail gas recovery and treatment system 100 also includes a tail gas fan 231, the air inlet of the tail gas fan 231 is connected to the second gas outlet 23 of the membrane separation device 2 through a pipeline, and the air outlet of the tail gas fan 231 is connected to the adsorption inlet 41 of the adsorption device 4 through a pipeline.

[0041] Therefore, under the power of the exhaust fan 231, the mixture of air discharged from the second gas outlet 23 of the membrane separation device 2 and a small amount of gaseous chloroform enters the adsorption device 4 for adsorption treatment. After adsorption treatment, the chloroform exhaust meets the emission standards and is then discharged into the external environment through the discharge port 42.

[0042] In some embodiments, the chloroform tail gas recovery and treatment system 100 further includes a first recovery tank 16 , and the first condensing device 14 further includes a first condensation outlet 142 , and the first recovery tank 16 is connected to the first condensation outlet 142 .

[0043] The liquid chloroform condensed by the first condensing device 14 enters the first recovery tank 16 for temporary storage so that the recovered liquid chloroform can be recycled and reused as a raw material for refrigerant.

[0044] In some embodiments, the chloroform tail gas recovery and treatment system 100 further includes a first recovery pump 15 , the first condensation outlet 142 is connected to the first recovery tank 16 via the first recovery pump 15 , and a filter is provided between the first recovery pump 15 and the first condensation outlet 142 .

[0045] It is known that chloroform tail gas carries a small amount of impurities (e.g., mechanical impurities). These impurities are separated in the gas-liquid separator and discharged through the liquid outlet together with the liquid chloroform. The provision of a filter screen can filter these impurities to ensure the cleanliness of the liquid chloroform recovered in the first recovery tank 16 and prevent impurities from entering the first recovery pump 15 and causing wear on pump components.

[0046] Optionally, the filter screen is provided at the inlet of the first recovery pump 15 and is connected to the first recovery pump 15 .

[0047] In some embodiments, the adsorption device 4 is a resin adsorption device.

[0048] Optionally, the resin adsorption device includes a resin adsorption tank, in which a resin bed for chloroform adsorption is provided. The resin used in the resin bed is a macroporous resin with a specific surface area of ​​1200 m2 / g.

[0049] In this way, chloroform molecules can be efficiently captured, chloroform can be separated from air, and exhaust gas emissions can be guaranteed to meet standards.

[0050] In some embodiments, as Figure 1 As shown, the chloroform tail gas recovery and treatment system 100 also includes a third condensing device 5, which has a third condensing inlet 51, a gas phase outlet 52 and a liquid phase outlet 53, and the adsorption device 4 has a desorption inlet 43 and a desorption outlet 44 for steam to enter, and the desorption outlet 44 is connected to the third condensing inlet 51.

[0051] When the adsorption device 4 reaches saturation, saturated steam is introduced into the adsorption device 4 through the desorption inlet 43 to desorb and desorb the chloroform. The desorbed chloroform and steam mixture enters the third condensing device 5, thereby achieving resin regeneration and reuse, reducing the frequency of resin replacement; at the same time, the desorbed chloroform can be recovered again, thereby improving the chloroform recovery rate of the recovery and treatment system.

[0052] Optionally, the third condensing device 5 has two independent cooling medium channels, which are used to respectively introduce a primary cooling medium and a secondary cooling medium, wherein the primary cooling medium is 32°C water and the secondary cooling medium is 3°C ethanol.

[0053] When the desorbed chloroform and steam mixture is condensed, the primary cooling medium and the secondary cooling medium are introduced successively to cool the steam mixture. Most of the water vapor is condensed into condensed water and discharged from the liquid phase outlet 53, and a small amount of water vapor and gaseous chloroform is discharged from the gas phase outlet 52, which can improve the utilization rate of the cooling medium and the condensation efficiency.

[0054] In some embodiments, as Figure 1 As shown, the chloroform tail gas recovery and treatment system 100 also includes a fourth condensing device 6 and a wastewater tank 7. The fourth condensing device 6 has a fourth condensation inlet 61 and a fourth condensation outlet 62. The fourth condensation inlet 61 is connected to the gas phase outlet 52, and the wastewater tank 7 is connected to the fourth condensation outlet 62.

[0055] A small amount of water vapor and gaseous chloroform mixture discharged from the gas phase outlet 52 of the third condensing device 5 enters the fourth condensing device 6 for further condensation. The water vapor and gaseous chloroform are condensed into liquid to form a mixture of water and liquid chloroform. The mixture then enters the wastewater tank 7, where the two are separated into layers to further separate the water and liquid chloroform.

[0056] Optionally, the condensation temperature of the fourth condensing device 6 is 3°C to 5°C.

[0057] The third condensing device 5 is mainly used to condense water vapor to separate water vapor from chloroform; the fourth condensing device 6 is used to condense chloroform so that chloroform and a small amount of water vapor are condensed into liquid.

[0058] In some embodiments, the wastewater tank 7 has a chloroform recovery port 71 , and the chloroform tail gas recovery and treatment system 100 further includes a second recovery tank 712 , which is connected to the chloroform recovery port 71 .

[0059] In some embodiments, the wastewater tank 7 further has a wastewater outlet 72 , and the chloroform tail gas recovery and treatment system 100 further includes a high-temperature cracking device 722 , which is connected to the wastewater outlet 72 .

[0060] Specifically, if Figure 1 As shown, the wastewater tank 7 is connected to the fourth condensation outlet 62 of the fourth condensing device 6. The mixture of wastewater and liquid chloroform condensed by the fourth condensing device 6 is temporarily stored and layered in the wastewater tank 7, wherein the liquid chloroform can be discharged from the chloroform recovery port 71 and the wastewater can be discharged from the wastewater outlet 72.

[0061] A wastewater pump 721 is provided between the wastewater outlet 72 and the pyrolysis device 722. The wastewater pump 721 is used to pump the wastewater in the wastewater tank 7 into the pyrolysis device 722 for pyrolysis, thereby achieving zero discharge of chloroform tail gas.

[0062] A second recovery pump 711 is provided between the chloroform outlet and the second recovery tank 712. The second recovery pump 711 is used to pump the liquid chloroform in the wastewater tank 7 into the second recovery tank 712 for recovery. This part of the liquid chloroform has a high water content and needs to be dehydrated before being used as a refrigerant raw material.

[0063] In some embodiments, the chloroform tail gas recovery and treatment system 100 also includes a circulating cooling device, which includes a circulating pump 81 and a cooling water tank 82. The cooling water tank 82 is connected to the liquid phase outlet 53 of the third condensing device 5, the inlet of the circulating pump 81 is connected to the cooling water tank 82, and the outlet of the circulating pump 81 is connected to the desorption inlet 43 of the adsorption device 4.

[0064] It is known that the temperature and humidity of the adsorption device 4 after desorption are relatively high, which is not conducive to the adsorption work.

[0065] like Figure 1 As shown, the condensed water discharged from the liquid phase outlet 53 of the third condensing device 5 is temporarily stored in the cooling water tank 82. After the desorption of the resin adsorption device 4 is completed, the circulating pump 81 pumps the condensed water in the cooling water tank 82 into the resin adsorption tank of the adsorption device 4, and uses a spraying method to cool the resin bed of the resin adsorption tank. The water after spraying re-enters the third condensing device 5 for condensation, and then enters the cooling water tank 82 for storage, thereby realizing cyclic cooling. After circulating for a period of time, the temperature of the resin bed can be reduced to below 40°C.

[0066] Afterwards, the resin bed of the resin adsorption tank is purged with air to reduce the humidity of the resin adsorption device 4 , and the purged water vapor enters the third condensing device 5 for condensation, and then enters the cooling water tank 82 for storage.

[0067] In some embodiments, the cooling water tank 82 has a drain outlet 821 , which is connected to the waste water tank 7 .

[0068] During the above-mentioned circulating cooling process, since there are chloroform organics remaining in the resin bed of the resin adsorption tank, the circulating condensed water stored in the cooling water tank 82 also contains chloroform. Therefore, it is necessary to discharge this part of the condensed water into wastewater regularly. The discharged wastewater enters the wastewater tank 7 for temporary storage, and then enters the high-temperature cracking device 722 for high-temperature cracking under the action of the wastewater pump 721, thereby achieving zero pollution discharge of chloroform tail gas treatment.

[0069] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0070] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0071] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0072] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0073] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0074] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A chloroform tail gas recovery and treatment system, characterized in that, include: A gas-liquid separation device, wherein the gas-liquid separation device has a tail gas inlet, a liquid outlet and a mixed gas outlet, and the tail gas inlet is for the chloroform tail gas to enter; a first condensing device, the first condensing device having a first condensing inlet connected to the liquid outlet; a membrane separation device, the membrane separation device comprising a mixed gas inlet, a first gas outlet for discharging chloroform gas, and a second gas outlet for discharging air, the mixed gas inlet being connected to the mixed gas outlet; a second condensing device, the second condensing device having a second condensing inlet and a second condensing outlet, the second condensing inlet being connected to the first gas outlet, and the second condensing outlet being connected to the gas-liquid separation device; The adsorption device comprises an adsorption inlet and a discharge port, wherein the adsorption inlet is connected to the second gas outlet.

2. The chloroform tail gas recovery and treatment system according to claim 1, wherein The chloroform tail gas recovery and treatment system further includes a first recovery tank, the first condensing device further includes a first condensation outlet, and the first recovery tank is connected to the first condensation outlet.

3. Chloroform tail gas recovery and treatment system according to claim 2, is characterized in that, The chloroform tail gas recovery and treatment system further includes a first recovery pump, the first condensation outlet is connected to the first recovery tank via the first recovery pump, and a filter is provided between the first recovery pump and the first condensation outlet.

4. The chloroform tail gas recovery and treatment system according to any one of claims 1 to 3, characterized in that: The adsorption device is a resin adsorption device.

5. The chloroform tail gas recovery and treatment system according to claim 4, wherein: The chloroform tail gas recovery and treatment system also includes a third condensing device, which has a third condensing inlet, a gas phase outlet and a liquid phase outlet. The adsorption device has a desorption inlet and a desorption outlet for steam to enter, and the desorption outlet is connected to the third condensing inlet.

6. The chloroform tail gas recovery and treatment system according to claim 5, wherein: The chloroform tail gas recovery and treatment system also includes a fourth condensing device and a wastewater tank. The fourth condensing device has a fourth condensation inlet and a fourth condensation outlet. The fourth condensation inlet is connected to the gas phase outlet, and the wastewater tank is connected to the fourth condensation outlet.

7. The chloroform tail gas recovery and treatment system according to claim 6, wherein: The wastewater tank has a chloroform recovery port, and the chloroform tail gas recovery and treatment system further includes a second recovery tank connected to the chloroform recovery port.

8. The chloroform tail gas recovery and treatment system according to claim 6, wherein: The wastewater tank also has a wastewater outlet, and the chloroform tail gas recovery and treatment system also includes a high-temperature cracking device, which is connected to the wastewater outlet.

9. The chloroform tail gas recovery and treatment system according to claim 6, wherein: The chloroform tail gas recovery and treatment system also includes a circulating cooling device, which includes a circulating pump and a cooling water tank. The cooling water tank is connected to the liquid phase outlet of the third condensing device, the inlet of the circulating pump is connected to the cooling water tank, and the outlet of the circulating pump is connected to the desorption inlet of the adsorption device.

10. The chloroform tail gas recovery and treatment system according to claim 9, characterized in that: The cooling water tank has a drain port, and the drain port is connected to the waste water tank.

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