A fast-cycle temperature swing adsorption device and a temperature swing adsorption method

Abstract

The present invention provides a fast-cycle temperature swing adsorption device and a temperature swing adsorption method, which relate to the field of industrial gas purification. The fast-cycle temperature swing adsorption device includes a plurality of adsorption towers. Each adsorption tower sequentially experiences an adsorption state, a heating regeneration state, an initial cold blow state, and a final cold blow state within one working cycle. A raw material gas feed pipeline and a product gas output pipeline corresponding to the raw material gas feed pipeline are provided on each adsorption tower; a heating gas input pipeline and a heating gas output pipeline corresponding to the heating gas input pipeline are provided on each adsorption tower; a cold blow gas feed pipeline and a cold blow gas communication pipeline communicating with other adsorption towers are provided on each adsorption tower, so as to transport the cold blow gas output from the adsorption tower in the final cold blow state to the adsorption tower in the initial cold blow state. The same adsorption tower experiences the cold blow state twice in one cycle, which prolongs the cold blow time, achieves the purpose of shortening the cycle and reducing energy consumption, and can reduce the adsorbent filling amount and device investment.

Description

Technical Field

[0001] The present invention relates to the field of industrial gas purification, and more particularly, to a fast-cycle temperature swing adsorption device and a temperature swing adsorption method. Background Art

[0002] Temperature swing adsorption utilizes the characteristic that the equilibrium adsorption capacity of the adsorbent decreases with the increase of temperature, and adopts the operation methods of adsorption at normal temperature and desorption by heating. In addition to adsorption and desorption, the entire temperature swing adsorption operation also includes auxiliary links such as cooling the desorbed adsorbent.

[0003] The current temperature swing adsorption process generally adopts a long-cycle operation mode, with a large loading amount, insufficient utilization of thermal energy, and the general limiting factor for the operation cycle is insufficient cooling during cold blow.

[0004] In view of this, the present application is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a fast-cycle temperature swing adsorption device and a temperature swing adsorption method, aiming to shorten the process cycle, reduce the investment cost of the device, and improve the heat utilization rate.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] In a first aspect, the present invention provides a fast-cycle temperature swing adsorption device, including a plurality of adsorption towers. Each adsorption tower sequentially experiences an adsorption state, a heating regeneration state, an initial cold blow state, and a final cold blow state within one working cycle;

[0008] A raw material gas feed pipeline and a product gas output pipeline corresponding to the raw material gas feed pipeline are provided on each adsorption tower to purify the raw material gas when the adsorption tower is in the adsorption state;

[0009] A heating gas input pipeline and a heating gas output pipeline corresponding to the heating gas input pipeline are provided on each adsorption tower to heat and regenerate the adsorbent in the adsorption tower through the heating gas;

[0010] A cold blow gas feed pipeline is provided on each adsorption tower to perform a final cold blow on the adsorption tower using the cold blow gas; A cold blow gas communication pipeline communicating with other adsorption towers is also provided on each adsorption tower to transport the cold blow gas output from the adsorption tower in the final cold blow state to the adsorption tower in the initial cold blow state.

[0011] In an optional embodiment, a regenerated gas cooler and a regenerated gas separator are further included. The feed port of the regenerated gas cooler is communicated with the heating gas output pipeline on each adsorption tower, and the discharge port of the regenerated gas cooler is communicated with the feed port of the regenerated gas separator.

[0012] In an alternative embodiment, it further includes a main raw material gas pipeline. The inlets of the raw material gas feed pipelines on each adsorption tower are all connected to the main raw material gas pipeline, and the top gas outlet of the regeneration gas separator is connected to the main raw material gas pipeline.

[0013] In an alternative embodiment, the inlets of the cold purge gas feed pipelines on each adsorption tower are all connected to the main raw material gas pipeline.

[0014] In an alternative embodiment, it further includes a heater. On each adsorption tower, there is also a cold purge gas output pipeline corresponding to the cold purge gas connection pipeline. The outlet of the cold purge gas output pipeline is connected to the inlet of the heater, and the outlet of the heater is connected to the heating gas input pipeline on each adsorption tower.

[0015] In an alternative embodiment, control valves with regulating switches are provided on the raw material gas feed pipeline, product gas output pipeline, heating gas input pipeline, heating gas output pipeline, cold purge gas feed pipeline, cold purge gas connection pipeline, and cold purge gas output pipeline on each adsorption tower.

[0016] In an alternative embodiment, there are 4 adsorption towers.

[0017] In an alternative embodiment, it further includes a product cooler. The product gas output pipelines on each adsorption tower are all connected to the inlet of the cooler.

[0018] In a second aspect, the present invention provides a temperature swing adsorption method, which utilizes the fast cycle temperature swing adsorption device in any one of the foregoing embodiments, and includes the following steps: Each adsorption tower sequentially experiences an adsorption state, a heating regeneration state, an initial cold purge state, and a final cold purge state in one cycle;

[0019] When the adsorption tower is in the adsorption state, raw material gas is introduced into the adsorption tower through the raw material gas feed pipeline for adsorption, and product gas is output through the product gas output pipeline;

[0020] When the adsorption tower is in the heating regeneration state, heating gas is input into the adsorption tower through the heating gas input pipeline to regenerate the adsorbent in the adsorption tower;

[0021] When the adsorption tower is in the initial cold purge state, the gas output from the adsorption tower in the final cold purge state is introduced through the cold purge gas connection pipeline. When the adsorption tower is in the final cold purge state, cold purge gas is input through the cold purge gas feed pipeline to cool down the adsorbent in the adsorption tower.

[0022] In an alternative embodiment, the final temperature at the outlet of the adsorption tower in the heating regeneration state is 90 - 120 °C; preferably, the final temperature at the outlet of the adsorption tower in the initial cooling purge state is 80 - 100 °C; preferably, the final temperature at the outlet of the adsorption tower in the final cooling purge state is 10 - 20 °C higher than the raw gas temperature; preferably, the operating temperature of the regeneration gas heater is 250 - 300 °C.

[0023] Advantages of the embodiments of the present invention: By improving the temperature swing adsorption device and method, the adsorption tower sequentially experiences an adsorption state, a heating regeneration state, an initial cooling purge state, and a final cooling purge state in one cycle. The initial cooling purge state uses the cooling gas output from the adsorption tower in the final cooling purge state for cooling. Some of the adsorbents at the outlet of the initial cooling purge tower are still in a heated state, making full use of the heat accumulated in the adsorption tower. The same adsorption tower experiences two cooling purge states in one cycle, extending the cooling purge time, achieving the purpose of shortening the cycle and reducing energy consumption. In addition, shortening the cycle also means reducing the adsorbent filling amount and reducing the device investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a structural diagram of a fast-cycle temperature swing adsorption device provided by an embodiment of the present invention.

[0026] Reference numerals: 100 - fast-cycle temperature swing adsorption device; 110 - adsorption tower; 001 - raw gas feed pipeline; 002 - product gas output pipeline; 003 - heating gas input pipeline; 004 - heating gas output pipeline; 005 - cold purge gas feed pipeline; 006 - cold purge gas connection pipeline; 007 - raw gas transport main pipe; 008 - cold purge gas output pipeline; 120 - regeneration gas cooler; 130 - regeneration gas separator; 140 - heater; 150 - product cooler. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0028] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0029] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of the invention is usually placed during use. This is 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 construed as a limitation of the present invention.

[0031] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0032] Please refer to Figure 1 , the embodiment of the present invention provides a fast-cycle temperature swing adsorption device 100, which includes a plurality of adsorption towers 110. Each adsorption tower 110 sequentially experiences an adsorption state, a heating regeneration state, an initial cold blow state, and a final cold blow state within one working cycle, a total of 4 stages.

[0033] In some embodiments, there may be 4 adsorption towers 110, and at a certain time point, 4 different adsorption towers just cover 4 working states. In other embodiments, there may also be more adsorption towers.

[0034] Furthermore, a raw material gas feed pipeline 001 and a product gas output pipeline 002 corresponding to the raw material gas feed pipeline 001 are provided on each adsorption tower 110 to purify the raw material gas when the adsorption tower 110 is in the adsorption state; a heating gas input pipeline 003 and a heating gas output pipeline 004 corresponding to the heating gas input pipeline 003 are provided on each adsorption tower 110 to heat and regenerate the adsorbent in the adsorption tower 110 through the heating gas; a cold blow gas feed pipeline 005 is provided on each adsorption tower 110 to perform a final cold blow on the adsorption tower 110 by using the cold blow gas; a cold blow gas communication pipeline 006 communicating with other adsorption towers 110 is further provided on each adsorption tower 110 to convey the cold blow gas output from the adsorption tower 110 in the final cold blow state to the adsorption tower 110 in the initial cold blow state.

[0035] It should be noted that in the embodiments of the present invention, the cooling gas output in the final cold blow state is input into the adsorption tower 110 in the initial cold blow state. The same adsorption tower experiences two cold blow states in one cycle, which extends the cold blow time, achieves the purpose of shortening the cycle and reducing energy consumption, and can also reduce the filling amount of the adsorbent.

[0036] Specifically, each adsorption tower 110 is filled with an adsorbent, which can be used to remove hydrocarbons, water, etc. from the raw material gas. When it has the function of dehydrating, it can also be called a drying tower, and desiccants are filled in the straight cylinder section inside the tower.

[0037] Furthermore, control valves with regulating switches are provided on the raw material gas feed pipeline 001, product gas output pipeline 002, heating gas input pipeline 003, heating gas output pipeline 004, cold blow gas feed pipeline 005, cold blow gas connection pipeline 006, and cold blow gas output pipeline 008 of each adsorption tower 110 to switch the adsorption tower 110 to different working states, as follows:

[0038] Adsorption state: When the adsorption tower 110 is in the adsorption state, the control valves on the raw material gas feed pipeline 001 and product gas output pipeline 002 are opened, and the control valves on other pipelines are in the closed state. The raw material gas is introduced into the adsorption tower 110 for adsorption to remove components such as water.

[0039] Heating regeneration state: When the adsorption tower 110 is in the heating regeneration state, the control valves on the heating gas input pipeline 003 and heating gas output pipeline 004 are opened, and the control valves on other pipelines are closed to heat and regenerate the adsorbent in the adsorption tower 110 to restore its adsorption activity.

[0040] Initial cold blow state: When the adsorption tower 110 is in the initial cold blow state, the control valves on the cold blow gas connection pipeline 006 and cold blow gas output pipeline 008 are opened, and the control valves on other pipelines are closed. The cooling gas output from other adsorption towers 110 in the final cold blow state is transported to this tower for preliminary cooling.

[0041] Final cold blow state: When the adsorption tower 110 is in the final cold blow state, the control valves on the cold blow gas feed pipeline 005 and cold blow gas connection pipeline 006 are opened, and the control valves on other pipelines are closed to cool the adsorption tower 110 with a gas at a lower temperature.

[0042] In some embodiments, the cold blow gas connection pipeline 006 is a two-way pipeline, so that the cold blow gas can be output through the cold blow gas connection pipeline 006 when the adsorption tower 110 is in the final cold blow state and input when the adsorption tower 110 is in the initial cold blow state, which can further simplify the pipeline.

[0043] In some embodiments, a product cooler 150 is further included. The product gas output pipeline 002 on each adsorption tower 110 is communicated with the inlet of the cooler. The product cooler 150 can be installed as needed. For the situation where the temperature in the application area is high and there may be insufficient cold blow, the temperature of the product gas will also be relatively high, and the product can be cooled by the product cooler 150; for the situation where the local temperature is relatively low, the product cooler 150 may not be installed.

[0044] Furthermore, a regeneration gas cooler 120 and a regeneration gas separator 130 are further included. The feed inlet of the regeneration gas cooler 120 is communicated with the heating gas output pipeline 004 on each adsorption tower 110, and the discharge outlet of the regeneration gas cooler 120 is communicated with the feed inlet of the regeneration gas separator 130. The regeneration gas output from the heating gas output pipeline 004 passes through the regeneration gas cooler 120 and then through the regeneration gas separator 130 for gas-liquid separation. Sewage is obtained at the bottom of the regeneration gas separator 130, and regeneration gas is obtained at the top of the regeneration gas separator 130.

[0045] In some embodiments, a raw material gas delivery main pipe 007 is further included. The inlet of the raw material gas feed pipeline 001 on each adsorption tower 110 is communicated with the raw material gas delivery main pipe 007, and the top gas outlet of the regeneration gas separator 130 is communicated with the raw material gas delivery main pipe 007. By recycling the regeneration gas output from the regeneration gas separator 130, the raw material utilization rate is improved.

[0046] Furthermore, the inlet of the cold blow gas feed pipeline 005 on each adsorption tower 110 is communicated with the raw material gas delivery main pipe 007. When the adsorption tower 110 is in the final cold blow state, a part of the raw material gas is input through the cold blow gas feed pipeline 005 and used as cooling gas to avoid introducing impurities into the product.

[0047] Furthermore, a heater 140 is further included. Each adsorption tower 110 is further provided with a cold blow gas output pipeline 008 corresponding to the cold blow gas communication pipeline 006. The outlet of the cold blow gas output pipeline 008 is communicated with the inlet of the heater 140, and the outlet of the heater 140 is communicated with the heating gas input pipeline 003 on each adsorption tower 110. The regeneration gas output from the cold blow gas communication pipeline 006 is heated by the heater 140 and then transported to the adsorption tower 110 in the heating regeneration stage through the heating gas input pipeline 003.

[0048] In some embodiments, detectors for detecting parameters such as pressure and temperature are further provided on each pipeline for detecting the operating temperature and pressure.

[0049] It should be noted that the equipment and adsorbent at the inlet part of the adsorption tower in the initial cooling and purging state are in the state of being cooled by the regeneration gas, but the equipment and adsorbent at the outlet part will be continuously heated by the heat accumulated by the equipment and adsorbent at the inlet part. The adsorption tower after the initial cooling and purging is not fully cooled and still stores some heat, and the heat is taken out through the final cooling and purging. Therefore, the heat flow direction in the embodiment of the present invention is as follows: the regeneration gas is taken out from the final cooling and purging adsorption tower and enters the initial cooling and purging adsorption tower, and then enters the regeneration gas heater. After the regeneration gas heater replenishes heat, the regeneration gas enters the heating adsorption tower through the regeneration gas. The heating adsorption tower always maintains a relatively low outlet temperature to reduce the cooling capacity, and the heat storage capacity of the adsorbent and equipment is fully utilized throughout the process to make the heat be fully utilized as much as possible, achieving the purpose of reducing energy consumption.

[0050] The embodiment of the present invention also provides a temperature swing adsorption method, which uses the above-mentioned fast-cycle temperature swing adsorption device 100, and includes the following steps: each adsorption tower 110 sequentially experiences an adsorption state, a heating regeneration state, an initial cooling and purging state, and a final cooling and purging state in one cycle, specifically as follows:

[0051] When the adsorption tower 110 is in the adsorption state, the raw material gas is introduced into the adsorption tower 110 through the raw material gas feed pipeline 001 for adsorption, and the product gas is output through the product gas output pipeline 002;

[0052] When the adsorption tower 110 is in the heating regeneration state, the heating gas is input into the adsorption tower 110 through the heating gas input pipeline 003 to regenerate the adsorbent in the adsorption tower 110;

[0053] When the adsorption tower 110 is in the initial cooling and purging state, the gas output from the adsorption tower 110 in the final cooling and purging state is introduced through the cold purge gas connection pipeline 006. When the adsorption tower 110 is in the final cooling and purging state, the cold purge gas is input through the cold purge gas feed pipeline 005 to cool down the adsorbent in the adsorption tower 110.

[0054] To more precisely control the adsorption effect of the temperature swing adsorption and shorten the cycle, the inventor optimized the operating parameters of each state: the final temperature at the outlet of the adsorption tower 110 in the heating regeneration state is 90 - 120 °C (such as 90 °C, 100 °C, 110 °C, 120 °C, etc.); the final temperature at the outlet of the adsorption tower 110 in the initial cooling and purging state is 80 - 100 °C (such as 80 °C, 90 °C, 100 °C, etc.); the final temperature at the outlet of the adsorption tower 110 in the final cooling and purging state is 10 - 20 °C higher than the raw material gas temperature (such as 10 °C, 15 °C, 20 °C, etc.); the operating temperature of the regeneration gas heater 140 is 250 - 300 °C (such as 250 °C, 260 °C, 270 °C, 280 °C, 290 °C, 300 °C, etc.).

[0055] Example 1

[0056] This embodiment provides a temperature swing adsorption method, which utilizes Figure 1 a device. There are a total of 4 adsorption towers 110. Each adsorption tower 110 sequentially experiences an adsorption state, a heating regeneration state, an initial cold blow state, and a final cold blow state in one cycle.

[0057] The processes experienced by each adsorption tower are as follows: The raw material gas is introduced into the adsorption tower 110 through the raw material gas feed pipeline 001 for adsorption, and the product gas is output through the product gas output pipeline 002; then heating gas is input into the adsorption tower 110 through the heating gas input pipeline 003 to regenerate the adsorbent in the adsorption tower 110; then the gas output from the adsorption tower 110 in the final cold blow state is introduced through the cold blow gas connection pipeline 006, and then the adsorption tower 110 enters the final cold blow state, and cold blow gas is input through the cold blow gas feed pipeline 005 to cool down the adsorbent in the adsorption tower 110.

[0058] The specific operating parameters are as follows: The temperature of the raw material gas is 25 °C, and the final temperature at the outlet of the adsorption tower in the heating regeneration state is about 100 °C; the final temperature at the outlet of the adsorption tower in the initial cold blow state is about 90 °C; the final temperature at the outlet of the adsorption tower in the final cold blow state is 10 - 20 °C higher than the temperature of the raw material gas; the operating temperature of the regeneration gas heater 140 is 250 - 300 °C, and the cooling temperature of the regeneration gas cooler 120 is 40 °C.

[0059] After testing, the cycle time of the temperature swing adsorption method provided by this embodiment is 6 hours (1.5 hours for each state), the filling amount of each adsorbent is 6 m 3 , and the total filling amount is 24 m 3 . The heat consumption is about 400 kw.

[0060] Comparative Example 1

[0061] This embodiment provides a temperature swing adsorption method, which adopts the existing process, and specific reference can be made to the prior art. Under the condition of the same treatment scale, there are 3 adsorption tower devices in the existing conventional technology, the cycle time is 12 hours (4 hours for each state), the filling amount of each adsorption tower is 14 m 3 , and the total filling amount is 42 m 3 . The heat consumption is about 500 kw.

[0062] In summary, the embodiments of the present invention provide a fast-cycle temperature swing adsorption device and a temperature swing adsorption method. By improving the device and method of temperature swing adsorption, the adsorption tower experiences an adsorption state, a heating regeneration state, an initial cold blow state, and a final cold blow state in sequence during one cycle. The initial cold blow state is cooled by using the cooling gas output from the adsorption tower in the final cold blow state. The same adsorption tower experiences two cold blow states in one cycle, extending the cold blow time, achieving the purpose of shortening the cycle and reducing energy consumption. In addition, shortening the cycle also means reducing the adsorbent loading amount and reducing the device investment.

[0063] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A temperature swing adsorption method, characterized in that, Adsorption is carried out using a rapid cycle temperature swing adsorption device, and the rapid cycle temperature swing adsorption device includes a plurality of adsorption towers. Each adsorption tower sequentially experiences an adsorption state, a heating regeneration state, an initial cold purge state, and a final cold purge state within one working cycle; A raw material gas feed pipeline and a product gas output pipeline corresponding to the raw material gas feed pipeline are provided on each adsorption tower to purify the raw material gas when the adsorption tower is in the adsorption state; A heating gas input pipeline and a heating gas output pipeline corresponding to the heating gas input pipeline are provided on each adsorption tower to heat and regenerate the adsorbent in the adsorption tower through the heating gas; A cold purge gas feed pipeline is provided on each adsorption tower to perform a final cold purge on the adsorption tower using cold purge gas. A cold purge gas communication pipeline communicating with other adsorption towers is also provided on each adsorption tower to transport the cold purge gas output from the adsorption tower in the final cold purge state to the adsorption tower in the initial cold purge state; there are 4 adsorption towers; The method includes the following steps: Each adsorption tower sequentially experiences an adsorption state, a heating regeneration state, an initial cold purge state, and a final cold purge state within one cycle; When the adsorption tower is in the adsorption state, the raw material gas is introduced into the adsorption tower through the raw material gas feed pipeline for adsorption, and the product gas is output through the product gas output pipeline; When the adsorption tower is in the heating regeneration state, heating gas is input into the adsorption tower through the heating gas input pipeline to regenerate the adsorbent in the adsorption tower; When the adsorption tower is in the initial cold purge state, the gas output from the adsorption tower in the final cold purge state is introduced through the cold purge gas communication pipeline. When the adsorption tower is in the final cold purge state, cold purge gas is input through the cold purge gas feed pipeline to cool down the adsorbent in the adsorption tower; The final temperature at the outlet of the adsorption tower in the heating regeneration state is 90 - 120 °C; The final temperature at the outlet of the adsorption tower in the initial cold purge state is 80 - 100 °C; The final temperature at the outlet of the adsorption tower in the final cold purge state is 10 - 20 °C higher than the temperature of the raw material gas; The operating temperature of the regeneration gas heater is 250 - 300 °C.

2. The temperature swing adsorption method according to claim 1, wherein It further includes a regeneration gas cooler and a regeneration gas separator. The feed port of the regeneration gas cooler is communicated with the heating gas output pipeline on each adsorption tower, and the discharge port of the regeneration gas cooler is communicated with the feed port of the regeneration gas separator.

3. The temperature swing adsorption method according to claim 2, wherein It further includes a raw material gas transfer main pipe. The inlet of the raw material gas feed pipeline on each adsorption tower is communicated with the raw material gas transfer main pipe, and the top gas outlet of the regeneration gas separator is communicated with the raw material gas transfer main pipe.

4. The temperature swing adsorption method according to claim 3, wherein The inlet of the cold purge gas feed pipeline on each adsorption tower is communicated with the raw material gas transfer main pipe.

5. The temperature swing adsorption method according to claim 1 or 4, characterized in that, It further includes a heater. A cold purge gas output pipeline corresponding to the cold purge gas communication pipeline is also provided on each adsorption tower. The outlet of the cold purge gas output pipeline is communicated with the inlet of the heater, and the outlet of the heater is communicated with the heating gas input pipeline on each adsorption tower.

6. The temperature swing adsorption method according to claim 5, characterized in that, Control valves with regulating switches are provided on the feed gas pipeline, the product gas output pipeline, the heating gas input pipeline, the heating gas output pipeline, the cold purge gas feed pipeline, the cold purge gas communication pipeline, and the cold purge gas output pipeline of each adsorption tower.

7. The temperature swing adsorption method according to claim 1, wherein It further includes a product cooler, and the product gas output pipelines of each adsorption tower are communicated with the inlet of the cooler.

Images