Adsorption device

Abstract

The utility model discloses an adsorption device which comprises a shell, a first sealing cover, a second sealing cover and a cooling pipe, and the shell is provided with a containing space used for containing an adsorbent; the first sealing cover and the second sealing cover are arranged in a spaced mode in the first direction, the first sealing cover is used for blocking one end of the shell, the second sealing cover is used for blocking the other end of the shell, and the first sealing cover is provided with a raw material gas inlet pipe, a cold air outlet pipe and an adsorbent filler opening pipe which are communicated with the containing space; a feed gas outlet pipe and a cold gas inlet pipe which are communicated with the accommodating space are arranged on the second sealing cover; the cooling pipe is located in the containing space and used for making contact with the adsorbent, and the cooling pipe communicates with the cold air outlet pipe and the cold air inlet pipe and extends in the first direction. In this way, the impurity removal efficiency of the adsorbent can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pressure vessels, in particular to an adsorption device. BACKGROUND

[0002] In many industrial production processes, the purity of the raw gas has a crucial influence on the quality of the final product. In the process of purifying the gas by the adsorption device, the temperature of the adsorbent has an important influence on its adsorption capacity. The applicant of the present application found in the long-term research and development process that when the temperature of the adsorbent is too high, the adsorption capacity of the adsorbent will decrease, and the impurities in the raw gas cannot be effectively removed, which not only affects the purification effect of the gas, but also may have an adverse effect on the subsequent production process. CONTENT OF THE UTILITY MODEL

[0003] The technical problem solved by the present application is to provide an adsorption device that can improve the efficiency of the adsorbent in removing impurities.

[0004] To solve the above technical problem, one technical solution adopted by the present application is to provide an adsorption device, comprising: a shell provided with a containing space for containing an adsorbent; a first cover and a second cover, which are arranged at intervals in a first direction, the first cover is used to block one end of the shell, and the second cover is used to block the other end of the shell, the first cover is provided with a raw gas inlet pipe, a cold gas outlet pipe and an adsorbent filling pipe which communicate with the containing space, and the second cover is provided with a raw gas outlet pipe and a cold gas inlet pipe which communicate with the containing space; a cooling pipe located in the containing space for contacting the adsorbent, wherein the cooling pipe communicates the cold gas outlet pipe with the cold gas inlet pipe and extends along the first direction.

[0005] The adsorption device further comprises: two end covers arranged in the containing space, the two end covers are arranged at intervals in the first direction to divide the containing space into a first sub-space, a second sub-space and a third sub-space arranged at intervals in the first direction, and the adsorbent is arranged in the second sub-space; wherein the raw gas inlet pipe and the adsorbent filling pipe both pass through the first sub-space to communicate with the second sub-space, the raw gas outlet pipe passes through the third sub-space to communicate with the second sub-space, the cold gas outlet pipe communicates with the first sub-space, the cold gas inlet pipe communicates with the third sub-space, and the cooling pipe passes through the two end covers to communicate the first sub-space with the third sub-space.

[0006] The raw gas inlet pipe, the adsorbent filling pipe and the raw gas outlet pipe are all welded to the respective adjacent end covers, and the cooling pipe is welded to both end covers.

[0007] The adsorption device further comprises two filter assemblies arranged in the second sub-space, and the two filter assemblies are arranged at intervals in the first direction to position the adsorbent between the two filter assemblies.

[0008] The filter assembly comprises two support rings arranged in layers in the first direction and connected with the shell, two hole plates arranged in layers in the first direction and clamped between the two support rings, and a wool felt clamped between the two hole plates.

[0009] The end cover is fixedly connected with the support ring.

[0010] The cooling pipe comprises a seamless steel pipe.

[0011] The number of the cooling pipes is multiple, and the multiple cooling pipes are arranged in parallel and communicate with the first sub-space and the third sub-space.

[0012] The material of the shell comprises at least one of stainless steel, chromium alloy and titanium alloy.

[0013] The adsorbent is activated carbon.

[0014] The raw material gas inlet pipe and the cold gas inlet pipe respectively introduce raw material gas and cooling medium into the accommodation space, the adsorbent in the accommodation space adsorbs impurities in the raw material gas, the cooling medium flows into the cooling pipe to cool the adsorbent, the adsorption capacity of the adsorbent is improved, and the adsorption of impurities is more favorable. The raw material gas inlet pipe and the cold gas inlet pipe are located at two ends of the shell, the heat exchange time is prolonged, and the waste of cold energy is reduced. The cooling pipe is a straight pipe extending in the first direction. On the one hand, the straight pipe can reduce errors and quality problems caused by bending or connection process, and ensure the consistency and precision of the cooling pipe. On the other hand, the straight pipe is easy to manufacture, which can reduce the manufacturing difficulty of the cooling pipe and reduce the production cost. On the other hand, the straight pipe can reduce the difficulty caused by the tortuous pipe in the installation and assembly process, and facilitate the assembly of the adsorption device. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0016] Figure 1is a structural schematic view of an embodiment of the adsorption device of the present application;

[0017] Figure 2 is a sectional structural schematic view of an embodiment of the adsorption device along the direction AA' in Figure 1

[0018] Figure 3 is a sectional structural schematic view of another embodiment of the adsorption device along the direction AA' in Figure 1

[0019] Figure 4 is an enlarged view of a part P in Figure 2 DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0021] Referring to Figures 1 to 3 , the adsorption device 1 comprises a shell 10, a first cover 20, a second cover 30 and a cooling pipe 40.

[0022] The shell 10 is provided with a containing space 11 for containing an adsorbent 70, the first cover 20 and the second cover 30 are arranged at intervals in a first direction X, the first cover 20 is used for plugging one end of the shell 10, the second cover 30 is used for plugging the other end of the shell 10, the first cover 20 is provided with a raw material gas inlet pipe 210, a cold gas outlet pipe 220 and an adsorbent filling pipe 230 which are in communication with the containing space 11, and the second cover 30 is provided with a raw material gas outlet pipe 310 and a cold gas inlet pipe 320 which are in communication with the containing space 11.

[0023] ​​​Specifically, the raw material gas inlet pipe 210 is used to transport the raw material gas into the accommodation space 11, the raw material gas can be helium containing hydrogen impurities, or other mixed gas, the cold gas inlet pipe 320 is used to transport the cooling medium into the accommodation space 11, the cooling medium can be gas or liquid, for example, the cooling medium is low-temperature helium, or other low-temperature gas, the adsorbent filling pipe 230 is used to fill and replace the adsorbent 70 in the accommodation space 11, and the cooling medium provides cold energy for the adsorbent 70, so that the adsorbent 70 in the accommodation space 11 is cooled by the cold energy to reduce the molecular kinetic energy of the raw material gas, so that the impurity gas molecules are more easily bound by the adsorbent 70 surface, the first cover 20 and the second cover 30 are located at both ends of the adsorption device 1, and the raw material gas inlet pipe 210 and the cold gas inlet pipe 320 are located at both ends of the shell 10, which prolongs the heat exchange time and reduces the waste of cold energy.

[0024] The cooling pipe 40 is located in the accommodation space 11 for contacting with the adsorbent 70, wherein the cooling pipe 40 communicates the cold gas outlet pipe 220 and the cold gas inlet pipe 320 and extends along the first direction X.

[0025] Specifically, the cooling pipe 40 extends along the first direction X, that is, the cooling pipe 40 is a straight pipe and the axis of the cooling pipe 40 extends along the first direction X, the straight pipe can reduce the error and quality problem caused by bending or connection process, ensure the consistency and precision of the cooling pipe 40, and the straight pipe is easy to prepare, which can reduce the preparation difficulty of the cooling pipe 40 and reduce the production cost, and the straight pipe can reduce the difficulty caused by pipe bending in the installation and assembly process, and facilitate the assembly of the adsorption device 1.

[0026] Continuing to refer to Figure 2 The adsorption device 1 further comprises two heads 50, the two heads 50 are arranged in the accommodation space 11, and the two heads 50 are arranged at intervals in the first direction X to divide the accommodation space 11 into a first sub-space 111, a second sub-space 112 and a third sub-space 113 arranged at intervals in the first direction X, and the adsorbent 70 is arranged in the second sub-space 112, wherein the raw material gas inlet pipe 210 and the adsorbent filling pipe 230 both pass through the first sub-space 111 to communicate with the second sub-space 112, the raw material gas outlet pipe 310 passes through the third sub-space 113 to communicate with the second sub-space 112, the cold gas outlet pipe 220 communicates with the first sub-space 111, the cold gas inlet pipe 320 communicates with the third sub-space 113, and the cooling pipe 40 passes through the two heads 50 to communicate the first sub-space 111 and the third sub-space 113.

[0027] Specifically, the cooling medium enters the third sub-space 113 from the cold gas inlet pipe 320, then passes through the cooling pipe 40 located in the second sub-space 112, and then enters the first sub-space 111, and is discharged from the cold gas outlet pipe 220. The cooling medium is first buffered in the third sub-space 113 to make the temperature of the cooling medium uniform, and then enters the second sub-space 112, so that the cooling capacity can be uniformly transmitted to the adsorbent 70. The raw material gas enters the second sub-space 112 through the raw material gas inlet pipe 210, and contacts the adsorbent 70 located in the second sub-space 112 to remove impurities in the raw material gas, and is discharged from the raw material gas outlet pipe 310. The raw material gas does not contact the cooling medium located in the first sub-space 111 and the second sub-space 112, thereby avoiding the increase of impurities.

[0028] With reference to Figure 2 , the raw material gas inlet pipe 210, the adsorbent filling pipe 230, and the raw material gas outlet pipe 310 are all welded to the respective adjacent end covers 50, and the cooling pipe 40 is welded to the two end covers 50.

[0029] Specifically, the raw material gas inlet pipe 210 and the adsorbent filling pipe 230 are respectively welded to one end cover 50, the raw material gas outlet pipe 310 is welded to the other end cover 50, and the cooling pipe 40 is welded to the two end covers 50. On the one hand, welding can produce very tight connections, so that the device meets the requirements of anti-gas leakage, anti-water leakage, anti-corrosion of chemicals, etc., and can withstand a large load. On the other hand, welding the raw material gas inlet pipe 210 and the adsorbent filling pipe 230 to the end cover 50 can allow the raw material gas inlet pipe 210 and the adsorbent filling pipe 230 to bear the weight of the end cover 50, preventing the end cover 50 from shaking.

[0030] Further, the welding method can be at least one of electric arc welding, laser welding, ultrasonic welding, and resistance welding. The welding method can be one or a combination of electric arc welding, laser welding, ultrasonic welding, and resistance welding. For example, the raw material gas inlet pipe 210 and the end cover 50 are connected by laser welding, and the adsorbent filling pipe 230 is connected by electric arc welding.

[0031] In combination with Figure 2 and Figure 4 , the adsorption device 1 further comprises two filter assemblies 60, which are arranged in the second sub-space 112 and are spaced apart in the first direction X to position the adsorbent 70 between the two filter assemblies 60. Further, the adsorbent filling pipe 230 further passes through the adjacent filter assemblies 60.

[0032] Specifically, the adsorbent filling port pipe 230 penetrates the head 50 and further penetrates the filter assembly 60, the adsorbent 70 enters between the two filter assemblies 60 along the adsorbent filling port pipe 230, and the two filter assemblies 60 position the adsorbent 70 between the two filter assemblies 60 to avoid displacement or leakage of the adsorbent 70 during the adsorption process.

[0033] With reference to the drawings still Figure 4 , the filter assembly 60 includes two support rings 610, two hole plates 620, and a wool felt 630.

[0034] The two support rings 610 are arranged in a stacked manner in the first direction X and are connected to the shell 10, the two hole plates 620 are arranged in a stacked manner in the first direction X and are clamped between the two support rings 610, and the wool felt 630 is clamped between the two hole plates 620.

[0035] Specifically, the wool felt 630 is used to filter the adsorbent 70 to prevent the adsorbent 70 from flowing into the first sub-space 111 and the third sub-space 113, the hole plate 620 is used to support the wool felt 630 and position the wool felt 630 between the two hole plates 620, the application does not limit the number of openings of the hole plate 620 as long as it does not affect the flow rate of the raw material gas, the support ring 610 plays a supporting role and is used to support the hole plate 620 and the adsorbent 70, and at the same time position the hole plate 620 between the two support rings 610, when the filling amount of the adsorbent 70 is large, the support ring 610 can prevent the hole plate 620 and the wool felt 630 from being deformed due to the excessive weight of the adsorbent 70, and in this embodiment, the filter assembly 60 composed of the support ring 610, the hole plate 620, and the wool felt 630 positions the adsorbent 70 between the two filter assemblies 60, which can reduce production cost and improve production efficiency.

[0036] In another embodiment, the wool felt 630 is replaced by rock wool, that is, the rock wool is clamped between the two hole plates 620, and the rock wool is used to filter the adsorbent 70 to prevent the adsorbent 70 from flowing into the first sub-space 111 and the third sub-space 113.

[0037] In an embodiment, with reference to Figure 4 , the head 50 is fixedly connected with the support ring 610. Specifically, the head 50 is fixedly connected with the support ring 610, the support ring 610 is connected to the shell 10, and the head 50 is fixed to the inner surface of the shell 10, which strengthens the connection strength of the head 50 and the support ring 610 and avoids shaking of the head 50.

[0038] Further, the support ring 610 is fixedly connected with the shell 10, and the head 50 is fixedly connected with the support ring 610, which can be achieved by welding or the like, thereby improving the reliability and durability of the adsorption device 1.

[0039] In an embodiment, the cooling pipe 40 comprises a seamless steel pipe. Specifically, the seamless steel pipe is a kind of steel pipe without joints, which is usually produced by ingot or billet through processes such as piercing, rolling, drawing, etc. Different from the traditional jointed steel pipe, the seamless steel pipe has a continuous pipe wall without any joints, thus having high strength, pressure resistance and corrosion resistance, and is widely used in fields requiring high pressure resistance. In the present application, the seamless steel pipe is used for the cooling pipe 40, which can avoid the cooling medium from overflowing into the adsorbent 70, and further avoid interfering with the removal of impurities by the adsorbent 70.

[0040] In another embodiment, the cooling pipe 40 comprises a seamless copper pipe, which is a kind of pipe made of copper material and has good mechanical properties and excellent corrosion resistance. Due to its natural antioxidant properties, the copper pipe is widely used in occasions requiring high corrosion resistance, thermal conductivity and strength. The seamless copper pipe is not formed by welding, but by processes such as extrusion and drawing, so that it forms a continuous jointless pipe structure. Therefore, the use of the seamless copper pipe for the cooling pipe 40 can also prevent the cooling medium from overflowing, while improving the heat conduction efficiency of the cooling medium.

[0041] Continuing to refer to Figure 2 , the number of the cooling pipes 40 is multiple, and the multiple cooling pipes 40 are arranged side by side and are in communication with the first sub-space 111 and the third sub-space 113.

[0042] Specifically, the multiple cooling pipes 40 are arranged in the second sub-space 112 and are in communication with the first sub-space 111 and the third sub-space 113 through the two end covers 50. After the cooling medium enters the third sub-space 113, it enters the multiple cooling pipes 40, and the cooling capacity of the cooling medium is conducted to the adsorbent 70 through the multiple cooling pipes 40, preventing the adsorbent 70 from being locally supercooled or overheated, so that the adsorbent 70 is uniformly cooled, improving the cooling efficiency and further improving the adsorption efficiency of the adsorbent 70.

[0043] Further, the multiple cooling pipes 40 are uniformly distributed in the housing 10, and the cooling medium is uniformly distributed into the multiple cooling pipes 40 after entering the second sub-space 112, further improving the cooling efficiency.

[0044] In an embodiment, the multiple cooling pipes 40 are all seamless steel pipes, in another embodiment, the multiple cooling pipes 40 are all seamless copper pipes, and in yet another embodiment, a part of the cooling pipes 40 are seamless steel pipes and the other part of the cooling pipes 40 are seamless copper pipes.

[0045] In an embodiment, the material of the shell 10 comprises at least one of stainless steel, chromium alloy, titanium alloy, and specifically, the material of the shell 10 comprises one or more of stainless steel, chromium alloy, and titanium alloy, for example, the material of the shell 10 can be only stainless steel, or only chromium alloy, or a mixture of stainless steel and chromium alloy, or a combination of stainless steel, chromium alloy, and titanium alloy, the stainless steel has excellent corrosion resistance, high temperature resistance, and strength, the material of the shell 10 is stainless steel, which can improve the strength of the shell 10, and the stainless steel has good weldability, which can adapt to various welding methods such as arc welding, gas welding, laser welding, etc., facilitating the welding of the shell 10 and the pipeline structure such as the cold gas outlet pipe 220.

[0046] The material of the cold gas inlet pipe 320 comprises at least one of stainless steel, chromium alloy, and titanium alloy, that is, the material of the cold gas inlet pipe 320 comprises one or more of stainless steel, chromium alloy, and titanium alloy, for example, the material of the cold gas inlet pipe 320 can be only stainless steel, or only chromium alloy, which not only improves the strength of the cold gas inlet pipe 320, but also facilitates the welding of the shell 10 and the cold gas inlet pipe 320.

[0047] The material of the cold gas outlet pipe 220 comprises at least one of stainless steel, chromium alloy, and titanium alloy, that is, the material of the cold gas outlet pipe 220 comprises one or more of stainless steel, chromium alloy, and titanium alloy, which not only improves the strength of the cold gas outlet pipe 220, but also facilitates the welding of the shell 10 and the cold gas outlet pipe 220.

[0048] In an embodiment, the adsorbent 70 is activated carbon, and specifically, the raw gas comprises helium containing hydrogen impurities, the raw gas is introduced into the raw gas inlet pipe 210 of the adsorption device 1, and the activated carbon is filled into the adsorbent filling pipe 230 of the adsorption device 1, the activated carbon has different adsorption capacities for hydrogen and helium at a temperature condition of 14K to 20K, that is, in the working temperature range, the adsorption capacity for hydrogen is much greater than that for helium, by introducing the cooling medium into the adsorption device 1, the adsorption capacity of the activated carbon for hydrogen impurities reaches the maximum in the specific working temperature range, and the adsorption capacity for the obtained helium is weak.

[0049] Further, by introducing the cooling medium into the adsorption device 1, the temperature of the activated carbon is controlled at 15.15K to further improve the adsorption capacity of the activated carbon for hydrogen.

[0050] The above description is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An adsorption device, characterized by, The application relates to an adsorption device. The adsorption device comprises: a shell provided with a containing space for containing an adsorbent; a first cover and a second cover arranged in a first direction, the first cover being used for sealing one end of the shell, the second cover being used for sealing the other end of the shell, the first cover being provided with a raw material gas inlet pipe, a cold gas outlet pipe and an adsorbent filling pipe which are in communication with the containing space, and the second cover being provided with a raw material gas outlet pipe and a cold gas inlet pipe which are in communication with the containing space; 2. The adsorption device of claim 1, wherein a cooling pipe arranged in the containing space and used for contacting the adsorbent, wherein the cooling pipe is in communication with the cold gas outlet pipe and the cold gas inlet pipe and extends along the first direction. The adsorption device further comprises: two end covers arranged in the containing space, the two end covers being arranged in the first direction to divide the containing space into a first sub-space, a second sub-space and a third sub-space arranged in the first direction, and the adsorbent being arranged in the second sub-space; 3. The adsorption device of claim 2, wherein wherein the raw material gas inlet pipe and the adsorbent filling pipe are in communication with the second sub-space through the first sub-space, the raw material gas outlet pipe is in communication with the second sub-space through the third sub-space, the cold gas outlet pipe is in communication with the first sub-space, the cold gas inlet pipe is in communication with the third sub-space, and the cooling pipe is in communication with the first sub-space and the third sub-space through the two end covers.

4. The adsorption device of claim 2, wherein The raw material gas inlet pipe, the adsorbent filling pipe and the raw material gas outlet pipe are welded to the respective adjacent end covers, and the cooling pipe is welded to the two end covers. The adsorption device further comprises:

5. The adsorption device of claim 4, wherein two filter assemblies arranged in the second sub-space, the two filter assemblies being arranged in the first direction to position the adsorbent between the two filter assemblies, wherein the adsorbent filling pipe further passes through the adjacent filter assemblies. The filter assembly comprises: two support rings arranged in the first direction in a stacked mode and connected to the shell; two hole plates arranged in the first direction in a stacked mode and clamped between the two support rings; 6. The adsorption device of claim 5, wherein a wool felt clamped between the two hole plates.

7. The adsorption device of claim 2, wherein The end cover is fixedly connected to the support ring.

8. The adsorption device of claim 1, wherein, The number of the cooling pipes is plural, and the plural cooling pipes are arranged in parallel and in communication with the first sub-space and the third sub-space.

9. The adsorption device of claim 1, wherein, The cooling pipe comprises a seamless steel pipe.

10. The adsorption device of claim 1, wherein, The shell is made of at least one of stainless steel, chromium alloy and titanium alloy. The adsorbent is activated carbon.

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