Waste gas treatment device

Abstract

The utility model discloses a waste gas treatment device. The waste gas treatment device comprises a pressurized precipitation section, a cryogenic precipitation section, a filler pressurized adsorption section and the like, the pressurized precipitation section is used for pressurizing the waste gas; the cryogenic precipitation section is communicated with the pressurized precipitation section, and the cryogenic precipitation section is used for cooling the waste gas; the filler pressurized adsorption section is used for carrying out pressurized adsorption treatment on the waste gas; and the turbocharging device section is used for reducing the pressure of the gas and recovering energy at the same time so as to pre-compress the waste gas. According to the utility model, a waste gas pressurized precipitation process, a waste gas cryogenic precipitation process, a waste gas filler pressurized adsorption process and a decompressed emission energy recovery process are simultaneously adopted, so that the treatment working condition of extremely high-concentration organic waste gas can be met and is not limited to the treatment working condition of medium-low-concentration organic waste gas; the waste gas treatment efficiency, the organic matter precipitation efficiency and the filler utilization rate are greatly improved, and the use amount of the filler and the investment operation cost of the whole device are reduced.

Description

[0001] The present application claims priority to the Chinese patent application No. 2024233215215, filed on December 31, 2024, and entitled "Waste gas treatment device", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The utility model relates to waste gas treatment process technical field, especially, it relates to a waste gas treatment device. BACKGROUND

[0003] The traditional waste gas treatment process is generally realized by adsorption and desorption to purify the waste gas. However, the adsorption process is often limited by the adsorption capacity of the filler (resin, activated carbon, etc.) and the filling capacity of the adsorption tower. Due to the limited filling capacity or volume of the filler, the adsorption capacity for organic gases in the waste gas is greatly limited. SUMMARY

[0004] The main purpose of the utility model is to provide a waste gas treatment device, which aims to improve the waste gas treatment capacity and meet the treatment working conditions of low and high concentration organic waste gas.

[0005] To achieve the above-mentioned purpose, the utility model provides a waste gas treatment device, which comprises at least one of a pressurized precipitation section, a deep cooling precipitation section, a filler pressurized adsorption section, and a turbocharger section.

[0006] The pressurized precipitation section is adapted to introduce waste gas into the inlet end, and the pressurized precipitation section is used for pressurized treatment of the waste gas to convert part of the waste gas into liquid precipitation.

[0007] The deep cooling precipitation section is in communication with the outlet end of the pressurized precipitation section, and the deep cooling precipitation section is used for cooling treatment of the waste gas to convert part of the waste gas into liquid precipitation.

[0008] The filler pressurized adsorption section is in communication with the outlet end of the deep cooling precipitation section, and the filler pressurized adsorption section is used for adsorption treatment of the waste gas.

[0009] The turbocharger section comprises a decompression discharge mechanism and a pre-compression mechanism connected with the decompression discharge mechanism. The inlet end of the decompression discharge mechanism is in communication with the outlet end of the filler pressurized adsorption section, and the exhaust end of the decompression discharge mechanism discharges qualified gas. The inlet end of the pre-compression mechanism is in communication with the inlet end of the pressurized precipitation section to introduce waste gas, and the outlet end of the pre-compression mechanism is in communication with the inlet end of the filler pressurized adsorption section. The decompression discharge mechanism is used for decompression of the gas, and at the same time, energy is recovered in the decompression process to pre-compress the waste gas by the pre-compression mechanism.

[0010] Optionally, the pressurized separation section comprises a first gas path and a compressor arranged on the first gas path, the compressor being configured to compress the exhaust gas to separate part of the liquid.

[0011] Optionally, the pressurized separation section further comprises:

[0012] a buffer arranged on the first gas path and configured to buffer the exhaust gas; and / or

[0013] a filter arranged on the first gas path and configured to filter the exhaust gas.

[0014] Optionally, the pressurized separation section further comprises:

[0015] a gas-liquid separator, an input end of the gas-liquid separator being in communication with an output end of the compressor and configured to separate the gas from the liquid.

[0016] Optionally, the cryogenic separation section comprises a second gas path and a cryogenic cooler arranged on the second gas path, an input end of the second gas path being in communication with an output end of the pressurized separation section, the cryogenic cooler being configured to cool the exhaust gas to separate part of the liquid.

[0017] Optionally, the cryogenic separation section further comprises a regenerator, an input end of the regenerator being in communication with an output end of the cryogenic cooler and configured to heat the exhaust gas.

[0018] Optionally, the cryogenic separation section further comprises a pre-cooler arranged on the second gas path and in communication with an input end of the cryogenic cooler, the pre-cooler being configured to pre-cool the exhaust gas.

[0019] Optionally, the packed pressurized adsorption section comprises a third gas path and an adsorption device arranged on the third gas path, the adsorption device comprising one or more packed adsorption devices, an input end of the third gas path being in communication with an output end of the cryogenic separation section, an output end of the third gas path being in communication with an input end of the decompression discharge mechanism of the turbocharging device section, the adsorption device being configured to pressurize and adsorb the exhaust gas.

[0020] Optionally, the packed pressurized adsorption section further comprises a regeneration desorption pipeline, the regeneration desorption pipeline being in communication with the adsorption device and configured to introduce a desorption agent into the adsorption device to regenerate and desorb the packed adsorption device.

[0021] Optionally, the turbocharging device section further comprises a transmission mechanism, the decompression discharge mechanism and the pre-compression mechanism being connected through the transmission mechanism, the decompression discharge mechanism being configured to drive the pre-compression mechanism to rotate under the action of the recovered gas to pre-compress the introduced exhaust gas.

[0022] In the technical scheme of the utility model, the waste gas treatment device includes at least one of pressurized precipitation section, deep cooling precipitation section, filler pressurized adsorption section and turbocharging device section;The pressurized precipitation section is used for pressurizing treatment of waste gas, so that part of waste gas is converted into liquid and precipitated;The gas inlet end of the deep cooling precipitation section is communicated with the gas outlet end of the pressurized precipitation section, and the deep cooling precipitation section is used for cooling treatment of waste gas, so that part of waste gas is converted into liquid and precipitated;The gas inlet end of the filler pressurized adsorption section is communicated with the gas outlet end of the deep cooling precipitation section, and the filler pressurized adsorption section is used for pressurized adsorption treatment of waste gas;The turbocharging device section includes a pressure relief discharge mechanism and a precompression mechanism connected with the pressure relief discharge mechanism, the gas inlet end of the pressure relief discharge mechanism is communicated with the gas outlet end of the filler pressurized adsorption section, the exhaust end of the pressure relief discharge mechanism discharges qualified gas, the gas inlet end of the precompression mechanism is communicated with the gas inlet end of the pressurized precipitation section to pass in waste gas, and the gas outlet end of the precompression mechanism is communicated with the gas inlet end of the turbocharging device section;The pressure relief discharge mechanism is used for pressure relief of gas, and energy is recovered in the pressure relief process, so that the precompression mechanism precompresses waste gas.It can be understood that the utility model simultaneously adopts waste gas pressurized precipitation process, waste gas deep cooling precipitation process, waste gas filler adsorption process and turbocharging device section, improves waste gas treatment capacity, and is not limited to the treatment working condition of low concentration organic waste gas, and can meet the treatment working condition of high concentration organic waste gas.In addition, the waste gas treatment efficiency, organic matter precipitation efficiency and waste gas utilization rate of the waste gas treatment device are high, and the use amount and cost of the filler are greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structure shown in the drawings without creative labor for those skilled in the art.

[0024] Figure 1 It is the structural diagram of the embodiment of the waste gas treatment device of the utility model;

[0025] Figure 2 It is the structural diagram of the embodiment of the waste gas treatment device of the utility model.

[0026] EXPLANATION OF DRAWINGS:

[0027] 10, pressurized precipitation section; 20, cryogenic precipitation section; 30, filler pressurized adsorption section; 40, turbocharger device section; 11, first gas path; 12, compressor; 13, gas-liquid separator; 21, second gas path; 22, cryogenic device; 23, regenerator; 24, pre-cooler; 411, pressure reduction discharge mechanism; 412, pre-compression mechanism; 31, third gas path; 32, adsorption device.

[0028] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0031] In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features or implying the number of the technical features indicated. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B schemes that meet at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0033] The utility model provides a kind of waste gas treatment device, especially suitable for different concentration and gas component complex and the project working condition of expected power consumption greater, can carry out high-efficiency precipitation and separation to various concentration waste gas, and can greatly reduce power consumption.

[0034] Refer to Figure 1 And Figure 2 In an embodiment of the present application, the waste gas treatment device comprises a pressurized precipitation section 10, a deep cooling precipitation section 20, a filler pressurized adsorption section 30 and a turbocharging device section 40; the pressurized precipitation section 10 is used for pressurizing treatment of waste gas to convert part of the waste gas into liquid for precipitation; the gas inlet end of the deep cooling precipitation section 20 is communicated with the gas outlet end of the pressurized precipitation section 10, and the deep cooling precipitation section 20 is used for cooling treatment of waste gas to convert part of the waste gas into liquid for precipitation; the gas inlet end of the filler pressurized adsorption section 30 is communicated with the gas outlet end of the deep cooling precipitation section 20, and the filler pressurized adsorption section 30 is used for adsorption treatment of waste gas; the turbocharging device section 40 comprises a decompression discharge mechanism 411 and a pre-compression mechanism 412 connected with the decompression discharge mechanism 411, the gas inlet end of the decompression discharge mechanism 411 is communicated with the gas outlet end of the filler pressurized adsorption section 30, the exhaust end of the decompression discharge mechanism 411 discharges qualified gas, the gas inlet end of the pre-compression mechanism 412 is communicated with the gas inlet end of the pressurized precipitation section 10 to introduce waste gas, and the gas outlet end of the pre-compression mechanism 412 is communicated with the gas inlet end of the filler pressurized adsorption section 30; the decompression discharge mechanism 411 is used for decompression of gas, and energy is recovered in the decompression process to pre-compress the waste gas by the pre-compression mechanism 412.

[0035] In the embodiment, the pressurized precipitation section 10 can be provided with a plurality of pressurizing devices, which are devices that can pressurize and precipitate liquid from waste gas.

[0036] In the embodiment, the deep cooling precipitation section 20 can be provided with a plurality of refrigeration devices, which are devices that can cool and precipitate liquid from waste gas.

[0037] As Figure 1 and Figure 2 The filler pressurized adsorption section 30 of the embodiment can be provided with a plurality of adsorption devices 32, which are devices provided with fillers that can adsorb and treat waste gas.

[0038] It can be understood that the utility model simultaneously adopts waste gas pressurized separation process, waste gas cryogenic separation process, waste gas filler adsorption process and decompression discharge energy recovery process, improves waste gas treatment capacity, and is not limited to the treatment working condition of low-concentration organic waste gas, and can meet the treatment working condition of high-concentration organic waste gas.In addition, the waste gas treatment efficiency, organic matter separation efficiency and waste gas utilization rate of the waste gas treatment device are high, and the use amount and cost of the filler are greatly reduced.

[0039] To further improve the waste gas treatment effect and efficiency, refer to Figure 2 In an embodiment, the pressurized separation section 10 can include a first gas path 11 and a compressor 12 arranged on the first gas path 11, and the compressor 12 is used to compress the waste gas to separate part of the liquid.In addition, the first gas path 11 can also pass through the supplementary liquid to meet the heat dissipation or other needs of the compressor 12 and other devices.

[0040] In the embodiment, the pressurized separation section 10 can also include a buffer, a filter, a gas-liquid separator 13 and a condenser; the buffer is arranged on the first gas path 11 and is used to buffer the waste gas; the filter is arranged on the first gas path 11 and is used to filter the waste gas; the input end of the gas-liquid separator 13 is communicated with the output end of the compressor 12 and is used to separate the gas and the liquid; the input end of the condenser is communicated with the liquid outlet end of the gas-liquid separator 13, and the output end of the condenser is used to discharge the condensate.

[0041] The traditional waste gas treatment process often uses a fan as a power device to realize the purification of waste gas through adsorption and desorption, and the selected fan has a larger pressure drop than the sum of the pressure drops of the equipment and the pipeline, and the qualified gas outlet of the adsorbed qualified gas has a lot of kinetic energy, resulting in a large energy loss.

[0042] To this end, the utility model also makes related improvements to the problem of kinetic energy loss:

[0043] Refer to Figure 2 In an embodiment, the cryogenic separation section 20 can include a second gas path 21 and a cryogenic separator 22 arranged on the second gas path 21, and the input end of the second gas path 21 is communicated with the output end of the first gas path 11, and the cryogenic separator 22 is used to cool and treat the waste gas to separate part of the liquid.

[0044] In the embodiment, the cryogenic precipitation section 20 further comprises a regenerator 23; the input end of the regenerator 23 is communicated with the output end of the cryogenic refrigerator 22 and is used for regenerative treatment of the waste gas.

[0045] The regenerative temperature of the regenerator 23 can be set to 0-10℃, and the outlet pressure of the regenerator 23 can be set to 0.5-0.8Mpa, which is not limited here. The regenerative temperature of the regenerator 23 can be determined according to the best adsorption temperature of the filler, and the outlet pressure can be determined according to the different saturated concentrations of the pressurized gas of the system.

[0046] With reference to Figure 2 In an embodiment, the cryogenic precipitation section 20 can further comprise a pre-cooler 24, which is arranged on the second gas path 21 and communicated with the input end of the cryogenic refrigerator 22, and the pre-cooler 24 is used for pre-cooling the waste gas.

[0047] In the embodiment, the numbers of the pre-cooler 24 and the cryogenic refrigerator 22 are not limited, and the cryogenic refrigerator 22 can be connected with a refrigeration unit, which provides a heat exchange medium such as ethylene glycol or other refrigerants to the cryogenic refrigerator 22. The outlet temperature of the refrigeration unit can be set to-20℃ (according to the actual working condition), and the inlet temperature can be set to-15℃ (according to the actual working condition), so that the cryogenic refrigerator 22 can achieve better cooling effect.

[0048] With reference to Figure 2 In an embodiment, the filler pressurized adsorption section 30 comprises a third gas path 31 and an adsorption device 32 arranged on the third gas path 31. The input end of the third gas path 31 is communicated with the output end of the second gas path 21, the output end of the third gas path 31 is communicated with the input end of the turbocharging device section 40, and the adsorption device 32 is used for adsorption treatment of the waste gas.

[0049] In the embodiment, the turbocharging device section 40 comprises a pressure reduction and discharge mechanism 411, a transmission mechanism and a pre-compression mechanism 412. The pressure reduction and discharge mechanism 411 is connected with the pre-compression mechanism 412 through the transmission mechanism. The input end of the pressure reduction and discharge mechanism 411 is communicated with the gas outlet end of the filler pressurized adsorption section 30, the gas outlet end of the pressure reduction and discharge mechanism 411 directly discharges the qualified gas to the atmosphere or transports it to other devices for further treatment, and the output end of the pre-compression mechanism 412 is communicated with the gas inlet end of the filler pressurized adsorption section 30. The pressure reduction and discharge mechanism 411 is used for driving the pre-compression mechanism 412 to rotate through the transmission mechanism under the action of the recovered gas, so as to pre-compress the imported waste gas. In this way, not only the pressure reduction and discharge of the qualified gas are realized, but also the adsorption effect and efficiency of the adsorption device 32 are improved through the pressurized treatment of the waste gas.

[0050] In the embodiment, the pre-compression mechanism 412 is used for pre-compression of the waste gas, and the pressure is 50-100 KPa (according to the actual working condition). The pre-compressed waste gas can be directly subjected to pressurized adsorption treatment. In this way, the energy utilization rate and the waste gas treatment capacity of the waste gas treatment system can be further improved.

[0051] In the embodiment, the filler pressurized adsorption section 30 can further include a regeneration desorption pipeline, a cooling pipeline and a separation device. The regeneration desorption pipeline is in communication with the adsorption device 32 and is used for introducing steam or other desorption agents into the adsorption device 32 to regenerate and desorb the filler. The cooling pipeline can include a circulating input pipeline and a circulating output pipeline. The circulating input pipeline is in communication with the liquid inlet of the adsorption device 32 and is used for inputting water or other cooling media into the adsorption device 32. The circulating output pipeline is in communication with the liquid outlet of the adsorption device 32 or the third gas pipeline 31 and is used for outputting the cooling media. The separation device is arranged on the pipeline between the adsorption device 32 and the circulating output pipeline and is used for separating the liquid into layers to form waste water and usable water. Preferably, three adsorption devices 32 can be arranged to perform the process of cyclic adsorption and desorption. The usable water outlet of the separation device can be in communication with the condensate recovery tank to improve the utilization rate of the circulating water.

[0052] In the conventional waste gas treatment technology, for high-concentration waste gas, if adsorption is to be performed, the volume of the filler needs to be increased, which means that the adsorption tower or the equipment volume needs to be increased, resulting in a large floor area of the whole system, heavy equipment and bulky overall design. However, in the utility model, since the waste gas pressurized separation process, the waste gas deep cooling separation process and the waste gas filler adsorption process are simultaneously used, the treatment working conditions of medium-low concentration and extremely high concentration organic waste gas can be met, the waste gas treatment capacity is greatly improved, the volume of the filler pressurized adsorption section 30 does not need to be increased, the equipment is lighter and the structure is more compact, which is helpful to save space cost.

[0053] Referring to Figure 2 In an embodiment, the filler pressurized adsorption section 30 can further include a pressure reducing valve. The pressure reducing valve is arranged on the third gas pipeline 31 and is in communication with the input end of the adsorption device 32. The pressure reducing valve is used for reducing the pressure of the waste gas. The outlet pressure of the pressure reducing valve is 0-15 KPa. In this way, the pressure of the waste gas entering the adsorption device 32 can be appropriately sized to ensure the adsorption effect and efficiency.

[0054] In the application of the waste gas treatment device of the utility model, the following steps can be performed for production:

[0055] In the waste gas pressurized separation stage, one or more waste gas is pressurized by a compressor, part of the organic waste gas is converted into liquid and separated by a gas-liquid separator, the separated liquid is discharged and recovered, and the waste gas enters the next section;

[0056] In the waste gas cryogenic separation stage, another part of the waste gas output from the gas-liquid separator enters the cryogenic separation section, and after cooling by the pre-cooler and the cryogenic cooler, part of the organic waste gas is converted into liquid and separated, and the remaining waste gas which is not separated is reheated by the regenerator and then enters the pre-compression mechanism of the turbocharging device section together with the pre-compressed waste gas discharged from the pre-compression mechanism.

[0057] In the waste gas cryogenic separation stage, another part of the waste gas output from the gas-liquid separator enters the cryogenic separation section, and after cooling by the pre-cooler and the cryogenic cooler, part of the organic waste gas is converted into liquid and separated, and the remaining waste gas which is not separated is reheated by the regenerator and then enters the pre-compression mechanism of the turbocharging device section together with the pre-compressed waste gas discharged from the pre-compression mechanism.

[0058] That is, in the waste gas treatment, in combination with Figure 1 and Figure 2 The waste gas treatment system of the utility model is roughly divided into the following three stages:

[0059] In the first stage, i.e. the waste gas compression separation stage, one or more waste gas is collected by the buffer tank and then enters the compressor 12 through the filter, and the waste gas is compressed by the compressor 12 to separate part of the organic waste gas into liquid, and the waste gas is separated by the gas-liquid separator and then enters the condensate recovery tank.

[0060] In the second stage, i.e. the waste gas cryogenic separation stage, another part of the waste gas output from the gas-liquid separator enters the cryogenic section, and after cooling by the pre-cooler 24 and the cryogenic cooler 22, part of the organic waste gas is converted into liquid and separated, and the remaining waste gas which is not separated is reheated by the regenerator 23 to 0-10 degrees Celsius, at this time, the outlet pressure of the regenerator 23 is 0.5-0.8 Mpa, and the waste gas after cryogenic cooling enters the packed pressure adsorption section 30.

[0061] In the third stage, i.e. the packed pressure adsorption stage, the waste gas after cryogenic cooling and pre-compression enters the adsorption device 32, and after adsorption, the gas is transported to the pressure reduction discharge mechanism 411 of the turbocharging device section 40, which drives the pre-compression mechanism 412 to rotate to pre-compress the inlet waste gas of the waste gas treatment device and transport it to the adsorption device 32, and the exhaust end of the pressure reduction discharge mechanism 411 directly discharges the qualified gas to the atmosphere or transports it to other devices for further treatment, and after adsorption, the steam or active agent regenerates and desorbs the packing, and after physical cooling or cooling medium cooling, it is ready for adsorption again.

[0062] It is worth mentioning that the combination of the waste gas deep cooling separation process and the waste gas packing adsorption process has been applied in two projects of the applicant, namely, an ethyl acetate waste gas treatment project and a waste gas containing chlorine treatment project of a company, and good use effect and social influence have been achieved. The combination of the waste gas pressurization separation process, the waste gas deep cooling separation process, the waste gas packing adsorption process and the turbocharging device section will be implemented in a dichloromethane waste gas treatment project of a company, and at present, it is in the construction stage.

[0063] The technical scheme of the utility model has at least the following beneficial effects:

[0064] (1) The utility model simultaneously adopts the waste gas pressurization separation process, the waste gas deep cooling separation process, the waste gas packing adsorption process and the turbocharging process, improves the effectiveness and adaptability of the treatment of waste gas with different concentrations, can satisfy the treatment working condition of organic waste gas with extremely high concentration, and is not limited to the treatment working condition of organic waste gas with medium and low concentration.

[0065] (2) The kinetic energy of the gas after adsorption is recovered through the turbocharging device section 40, and the inlet waste gas is pre-compressed, which reduces the power consumption of the compressor 12 on the one hand and compresses the waste gas, increases the concentration of the waste gas per unit volume and improves the waste gas treatment efficiency of the whole system, and the energy recovery can greatly reduce the system power consumption.

[0066] (3) Since the four waste gas treatment processes are adopted, the waste gas is pre-compressed and transported to the packing pressurization adsorption section 30 through energy recovery, which greatly reduces the use amount and cost of the packing, and also improves the adsorption efficiency of the packing per unit volume (this is because the concentration of the waste gas is increased after pre-compression; for example, the amount of organic matter contained in 2 cubic meters of original waste gas is the same as that in 1 cubic meter of compressed waste gas, so the same volume of packing originally needs 2 hours to complete adsorption, but using the waste gas treatment device, the adsorption can be completed in only 1 hour, and the desorption stage is entered, thereby improving the waste gas treatment efficiency).

[0067] (4) The utility model pre-compresses through the compressor 12, which helps to improve the separation efficiency of the waste gas pressurization separation section 10 and the deep cooling separation section 20 equipment, and more organic matter is separated per unit time.

[0068] In summary, the waste gas adsorption device 32 and the adsorption process thereof proposed by the utility model are suitable for waste gas working conditions with different concentrations, can effectively solve the adsorption problem of high-concentration waste gas, convert high-concentration waste gas into low-concentration waste gas, reduce the resin loading amount and the equipment volume, the kinetic energy of the qualified gas outlet can be recovered to reduce the energy loss, and through the energy recovery and utilization, the gas is pre-compressed, the concentration of the waste gas per unit volume is increased, and the first adsorption efficiency of the resin is greatly improved.

[0069] The above merely describes optional embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation, direct / indirect application in other related technical fields under the inventive concept of the present application, or the contents of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. An exhaust gas treatment device, characterized by, The waste gas treatment device comprises at least one of a pressurized precipitation section, a deep cooling precipitation section, a filler pressurized adsorption section, and a turbocharging device section; The pressurized precipitation section is adapted to be connected to the waste gas, and is used for pressurizing the waste gas to convert part of the waste gas into liquid precipitation; The deep cooling precipitation section is connected to the outlet of the pressurized precipitation section, and is used for cooling the waste gas to convert part of the waste gas into liquid precipitation; The filler pressurized adsorption section is connected to the outlet of the deep cooling precipitation section, and is used for adsorbing the waste gas; The turbocharging device section comprises a decompression discharge mechanism and a pre-compression mechanism connected to the decompression discharge mechanism, the inlet of the decompression discharge mechanism is connected to the outlet of the filler pressurized adsorption section, the outlet of the decompression discharge mechanism discharges qualified gas, the inlet of the pre-compression mechanism is connected to the inlet of the pressurized precipitation section to introduce waste gas, and the outlet of the pre-compression mechanism is connected to the inlet of the filler pressurized adsorption section; the decompression discharge mechanism is used for decompressing the gas and recovering energy in the decompression process to pre-compress the waste gas by the pre-compression mechanism.

2. The exhaust gas treatment device of claim 1, wherein, The pressurized precipitation section comprises a first gas path and a compressor arranged on the first gas path, and the compressor is used for compressing the waste gas to precipitate part of the liquid.

3. The exhaust gas treatment device of claim 2, wherein, The pressurized precipitation section further comprises: a buffer arranged on the first gas path and used for buffering the waste gas; and / or a filter arranged on the first gas path and used for filtering the waste gas.

4. The exhaust gas treatment device of claim 2, wherein, The pressurized precipitation section further comprises: a gas-liquid separator, the input end of which is connected to the output end of the compressor and used for separating the gas and the liquid.

5. The exhaust gas treatment device of claim 1 or 2, wherein The deep cooling precipitation section comprises a second gas path and a deep cooling device arranged on the second gas path, the input end of the second gas path is connected to the output end of the pressurized precipitation section, and the deep cooling device is used for cooling the waste gas to precipitate part of the liquid.

6. The exhaust gas treatment device of claim 5, wherein, The deep cooling precipitation section further comprises a regenerator, the input end of which is connected to the output end of the deep cooling device and used for regenerating the waste gas.

7. The exhaust gas treatment device of claim 6, wherein, The deep cooling precipitation section further comprises a pre-cooler arranged on the second gas path and connected to the input end of the deep cooling device, and the pre-cooler is used for pre-cooling the waste gas.

8. The exhaust treatment device of claim 1, wherein, The filler pressurized adsorption section comprises a third gas path and an adsorption device arranged on the third gas path, the adsorption device comprises one or more filler adsorption devices, the input end of the third gas path is connected to the output end of the deep cooling precipitation section, the output end of the third gas path is connected to the input end of the decompression discharge mechanism of the turbocharging device section, and the adsorption device is used for pressurized adsorbing the waste gas.

9. The exhaust gas treatment device of claim 8, wherein, The filler pressurized adsorption section further comprises a regeneration and desorption pipeline, which is connected to the adsorption device and used for introducing a desorption agent into the adsorption device to regenerate and desorb the filler.

10. The exhaust treatment device of claim 1, wherein, The turbocharger unit further comprises a transmission mechanism, the pressure relief discharge mechanism is connected with the pre-compression mechanism through the transmission mechanism, and the pressure relief discharge mechanism is used to drive the pre-compression mechanism to rotate under the action of the recovered gas, so as to pre-compress the imported exhaust gas.

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