CN101474520A - Device for adsorptive separation and purification of industrial gas - Google Patents
Device for adsorptive separation and purification of industrial gas Download PDFInfo
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- CN101474520A CN101474520A CNA2008100322635A CN200810032263A CN101474520A CN 101474520 A CN101474520 A CN 101474520A CN A2008100322635 A CNA2008100322635 A CN A2008100322635A CN 200810032263 A CN200810032263 A CN 200810032263A CN 101474520 A CN101474520 A CN 101474520A
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Abstract
The invention relates to a device for separating and purifying industrial gasses by adsorption. The device comprises an upper multichannel rotary valve, a lower multichannel rotary valve, a plurality of adsorption towers. The outlet pipelines and the inlet pipelines of the adsorption towers are respectively connected with the corresponding the upper ports of upper valve bodies and lower ports of the lower valve bodies. A motor drives an upper valve plug and a lower valve plug to rotate. The upper port of the upper valve plug which is communicated with a product gas outlet of the upper valve body and the lower port of the lower valve plug which is communicated with a feed gas inlet are of corresponding relation and simultaneously communicated with the outlet pipeline and the inlet pipeline of the same adsorption tower. The blind hole of the upper valve plug and the lower port of the lower valve plug which is communicated with the stripping gas outlet of the lower valve body are of corresponding relation and simultaneously communicated with the outlet pipeline and the inlet pipeline of the same adsorption tower. The device has the advantages that the device has simplified and complex structure; the adsorption towers can be drastically reduced; one motor coaxially drives two multichannel rotational sequencing valves so as to realize the adsorption and desorption switching control of a plurality of adsorption towers, thus greatly increasing the speed; the device is suitable for separating and purifying feed gases with different components.
Description
[technical field]
The present invention relates to a kind of device of efficient, compact, transformation adsorptive separation and purification of industrial gas at a high speed.
[background technology]
At present, in disclosed at home and abroad patent documentation or the report data, the absorption switch speed of the technology of related traditional transformation adsorptive separation and purification of industrial gas is slow (switching cycle is generally 600～3600 seconds) all, and all need many sequencing valves (more than 6, even up to a hundred) to carry out the switching of adsorption process.Traditional transformation adsorbed gas purifying plant like this is because the absorption switch speed is slow, and the absorption and the regeneration times of adsorbent is few in the unit interval, makes that the utilization ratio of adsorbent is low, thereby causes that the adsorbent consumption is big, the adsorption tower volume is big, and investment is high; The tradition pressure swing adsorption is because many sequencing valves of needs could be realized its technical process, so control system is also complicated, the fault rate height.
For this reason, just need miniaturization and the reduction plant investment of new efficient separation purification of industrial gas technology to realize pressure-swing absorption apparatus.
[summary of the invention]
Purpose of the present invention just provides a kind of efficient, compact, transformation adsorptive separation and purification of industrial gas technology at a high speed, can realize that transformation absorption carries out fast, reduces plant investment and occupation of land.
The present invention adopts following technical proposal to be:
A kind of device of adsorptive separation and purification of industrial gas comprises:
(1) last multichannel rotary valve of forming by upper valve body and upper valve core, upper valve body has n to go up interface, upper valve core have at least two internal channels and n with upper valve body n on the corresponding last docking port of interface, wherein the individual docking port of going up of n-2 has the internal channel intercommunication, going up docking port for one has internal channel to be communicated with a product gas outlet of upper valve body, also having a last docking port is blind mouthful, and the product gas outlet of upper valve body connects the product feed channel;
(2) following multichannel rotary valves of forming by following valve body and bottom spool, following valve body has n lower interface, bottom spool have at least two internal channels and n with the corresponding following docking port of a following valve body n lower interface, wherein the individual docking port down of n-2 has the internal channel intercommunication, a following docking port has internal channel to be communicated with a raw material gas inlet of valve body down, also have a following docking port to have internal channel to be communicated with a stripping gas outlet of valve body down, the raw material gas inlet of following valve body connects the unstripped gas pipeline, and the stripping gas outlet of following valve body connects the stripping gas pipeline;
It is characterized in that: also comprise
(3) n adsorption tower, the outlet conduit of each adsorption tower and inlet duct are connected the last interface of upper valve body of a pair of correspondence and the lower interface of following valve body respectively;
(4) motors, coaxial drive upper valve core and bottom spool rotate, and the following docking port of valve body raw material gas inlet is outlet conduit and the inlet duct that corresponding relation is also connected same adsorption tower simultaneously under the last docking port of the connection upper valve body product gas outlet of described upper valve core and the connection of described bottom spool; The following docking port for valve body stripping gas outlet under the connection of blind mouthful last docking port and described bottom spool of described upper valve core is outlet conduit and the inlet duct that corresponding relation is also connected same adsorption tower simultaneously;
Said n is to be equal to or greater than 2 natural number.
Operation principle of the present invention is: the spool of two multichannel rotary valves is by a driven by motor driven in synchronism, the station of top multichannel rotary valve and bottom multichannel rotary valve is corresponding one by one, switch fast synchronously the inner passage of realizing two multichannel rotary valves, whenever (360 °) each adsorption tower that rotates a circle takes turns to operate, process all is identical, just the process of adsorption and desorption two stations of being separated by.In each station position, rotary valve all can stop 1～60 second, during this, the raw material admission line can be connected by passage in the multichannel rotary valve of bottom and specific adsorption tower (adsorption tower that is adsorbing), and the stripping gas pipeline can with certain the specific adsorption tower in addition adsorption tower of desorb (just) connection; Simultaneously, the product feed channel also can be connected by passage in the multichannel rotary valve of top and the adsorption tower that is advancing unstripped gas, be in adsorbed state; And the adsorption tower of not connecting with any raw material admission line, product feed channel, stripping gas pipeline is then connected the equilibrium of carrying out pressure mutually by the passage in the multichannel rotary valve of top.When the spool of multichannel rotary valve rotates to next station, originally connecting the above-mentioned adsorption tower that is in adsorption process with unstripped gas pipeline and product feed channel respectively by bottom multichannel rotary valve and top multichannel rotary valve will disconnect with unstripped gas pipeline and product feed channel, change into by other passages in the multichannel rotary valve and the connection of other adsorption towers and carry out isostasy, when treating that the multichannel rotary valve rotates to the station of this adsorption tower and the connection of stripping gas pipeline, this adsorption tower just carries out the desorb operation.When the multichannel rotary valve rotates a circle (360 °) when getting back to initial station again, this adsorption tower is connected with unstripped gas pipeline (by bottom multichannel rotary valve) and product feed channel (by top multichannel rotary valve) once more.This adsorption tower has just begun next " absorption-desorb " circulation again.
When this adsorption tower has been finished from advancing unstripped gas when getting rid of " absorption-desorb " cyclic process of stripping gas, other adsorption tower has also been finished same " absorption-desorb " cyclic process just, and corresponding rotary valve has also rotated a week (360 °) just.
In theory, as long as the multichannel rotary valve has enough interfaces, adsorption tower that the present invention joins can be unrestricted, but limited by present adaptable multichannel rotary valve, and the quantity of adsorption tower generally is no more than 12.
The device major advantage of this adsorptive separation and purification of industrial gas has:
1) has only two multichannel rotation sequencing valves,, greatly simplify device reliability height, compact conformation than the tens of of traditional pressure-swing absorption apparatus even up to a hundred sequencing valves.
2) speed of absorption and desorb improves greatly, so adsorption tower can dwindle significantly.
3) can realize the absorption and the desorb switching controls of many adsorption towers (2～12) with a motor, control system is simple, reliable, reduced investment.
4) can load one or more adsorbents in activated alumina, silica gel, molecular sieve, the activated carbon in the adsorption tower among the present invention, different component mixed material gas are carried out Separation ﹠ Purification.When unstripped gas is when containing hydrogen mixed gas, product gas is exactly high-purity hydrogen, and hydrogen purity can reach 99～99.999%, and stripping gas is exactly other components beyond the dehydrogenation; When unstripped gas was air, product gas was exactly oxygen, and stripping gas is exactly rich nitrogen; When unstripped gas was biogas, product gas was exactly high concentration CH
4(concentration 80～99%), stripping gas are exactly rich CO
2Gas; When unstripped gas was coal bed gas, product gas was exactly to contain methane low heat value air seldom, and stripping gas is exactly high concentration CH
4(concentration 30～99%); When unstripped gas is to be rich in CO
2Gaseous mixture the time, product gas is exactly decarbonization gas, and stripping gas is exactly rich CO
2Gas (CO
2Concentration 30～99%).For different unstripped gas, device itself all is identical, just the adsorbent kind difference of filling in the adsorption tower.
[description of drawings]
Fig. 1 is the schematic diagram that the present invention uses 2 adsorption towers.
Fig. 2 is the schematic diagram that the present invention uses 3 adsorption towers.
Fig. 3 is the schematic diagram that the present invention uses 4 adsorption towers.
Fig. 4 is the schematic diagram that the present invention uses 12 adsorption towers.
[specific embodiment]
Elaborate below in conjunction with embodiments of the invention and accompanying drawing.
See that n gets 2 in the technical solution of the present invention shown in Figure 1, the embodiment one of two adsorption towers 1 and 2 is promptly arranged.A last multichannel rotary valve 02 of forming by upper valve body and upper valve core, upper valve body has 2 to go up interface, upper valve core has 2 to go up the corresponding last docking ports of interface with 2 of upper valve bodies, an internal channel of upper valve core is the intercommunication internal channel, an internal channel is communicated with 1 product gas outlet that goes up docking port and upper valve body, also having a last docking port is blind mouthful, and the product gas outlet of upper valve body connects product feed channel 04.
A following multichannel rotary valve 01 of forming by following valve body and bottom spool, following valve body has 2 lower interfaces; Bottom spool have 2 with the corresponding following docking port of 2 lower interfaces of following valve body, internal channel of bottom spool is the intercommunication internal channel, an internal channel is communicated with a raw material gas inlet of 1 following docking port and following valve body, a stripping gas of 1 following docking port and following valve body exports to also have an internal channel to be communicated with in addition, the raw material gas inlet of following valve body connects unstripped gas pipeline 05, and the stripping gas outlet of following valve body connects stripping gas pipeline 06.
Outlet conduit U1, the U2 of 2 adsorption towers 1,2 is connected the last interface of corresponding upper valve body and the lower interface of following valve body respectively with inlet duct D1, D2.
A motor 03, coaxial drive upper valve core and bottom spool rotate, and the following docking port of valve body raw material gas inlet is outlet conduit U1 or U2 and inlet duct D1 or the D2 that corresponding relation is also connected same adsorption tower simultaneously under the last docking port of the connection upper valve body product gas outlet of described upper valve core and the connection of described bottom spool; The following docking port for valve body stripping gas outlet under the connection of blind mouthful last docking port and described bottom spool of described upper valve core is corresponding relation and also connects same adsorption tower outlet conduit U2 or U1 and inlet duct D2 or D1 simultaneously.
Many way rotary valves that the present invention adopts are ball valves of the prior art, are not character of innovation of the present invention.The internal channel of upper valve core, bottom spool can be provided with 4 to 6 as required, the spool internal channel be provided with because of connectivity capabilities different different, those skilled in the art can determine or select for use suitable spool internal channel scheme according to functional requirement, do not illustrate so do not enumerate one by one.
In present embodiment one, to set 03 in motor and be in original position, upper valve core is communicated with the outlet conduit U1 of upper valve body product gas outlet and adsorption tower 1, the blind mouthful of outlet conduit U2 facing to adsorption tower 2 of upper valve core; Bottom spool is communicated with the inlet duct D1 and the unstripped gas pipeline 05 of adsorption tower 1, and the inlet duct D2 that bottom spool is communicated with adsorption tower 2 simultaneously conciliates aspirating air pipe 06, and at this moment, adsorption tower 1 is in adsorption process, and adsorption tower 2 is in desorption process.0.01 the unstripped gas of～10.0MPa.G relatively high pressure is after unstripped gas pipeline 05 enters down multichannel rotary valve 01, an internal channel of connecting from the inlet duct D1 of bottom spool and adsorption tower 1 enters adsorption tower 1, under relatively high pressure, adsorbent in the adsorption tower 1 is that stripping gas absorbs with specific component, remaining gas composition is that product gas then enters multichannel rotary valve 02 from the outlet conduit U1 of adsorption tower 1, an internal channel by upper valve core enters product feed channel 04, through sending behind control valve 07 steady pressure.At this moment, outlet conduit U2 is subjected to the sealing of blind mouthful of upper valve core, passed through the component that is adsorbed agent absorption of balanced step-down in the adsorption tower 2, under-0.09MPa.G～0.5MPa.G relatively low pressure, desorb, the formation stripping gas withdraws from from the inlet duct D2 of adsorption tower 2, discharges from stripping gas pipeline 06 through another internal channel of bottom spool.
03 in motor rotates an angle, and the intercommunication internal channel of upper valve core is communicated with the outlet conduit U1 of adsorption tower 1 and the outlet conduit U2 of adsorption tower 2, and two towers enter balanced step-down process.
03 in motor rotates an angle again, and upper valve core is communicated with the outlet conduit U2 of upper valve body product gas outlet and adsorption tower 2, the blind mouthful of outlet conduit U1 facing to adsorption tower 1 of upper valve core; Bottom spool is communicated with the inlet duct D2 and the unstripped gas pipeline 05 of adsorption tower 2, and the inlet duct D1 that bottom spool is communicated with adsorption tower 1 simultaneously conciliates aspirating air pipe 06, and at this moment, adsorption tower 2 is in adsorption process, and adsorption tower 1 is in desorption process.This moment, the adsorption and desorption process was identical with the last time, and just the course of work of adsorption tower 1 and adsorption tower 2 has been done by turns.
03 in motor rotates an angle again, the internal channel of upper valve core is communicated with the outlet conduit U2 of adsorption tower 2 and the outlet conduit U1 of adsorption tower 1, two towers enter balanced step-down process again, and just the last docking port of upper valve core connection adsorption tower 1 outlet conduit U1 and adsorption tower 2 outlet conduit U2 has been done by turns.
As mentioned above, constantly rotate many way rotary valves 01 and 02 by the control motor, adsorption tower 1 and adsorption tower 2 are alternately realized absorption-desorption process, and the course of work is identical, thereby realizes the continuous Separation ﹠ Purification of unstripped gas.Whenever rotate a circle, two adsorption towers are just all finished same absorption-desorption process one time.
See that n gets 3 in the technical solution of the present invention shown in Figure 2, the embodiment two of three adsorption towers 1,2 and 3 is promptly arranged.Increase an adsorption tower 3, the lower interface of the last interface of corresponding increase upper valve body, the last docking port of upper valve core and following valve body, the following docking port of bottom spool; The outlet conduit U3 of adsorption tower 3, inlet duct D3 are identical with adsorption tower 1,2 with the annexation of upper valve body, following valve body; The internal channel of different is upper valve core, bottom spool is different.
In present embodiment two, motor shaft whenever rotates a circle (360 °), and in balanced step-down process, the internal channel of upper valve core is communicated with two adsorption towers.With regard to each adsorption tower, the course of work is identical.(0.01～10.0MPa.G) unstripped gas is after unstripped gas pipeline 05 enters many way rotary valves 1 to relatively high pressure, position of rotation by the control motor can make unstripped gas and D1 connection enter adsorption tower 1, under relatively high pressure, the particular adsorbent of filling absorbs specific component in the adsorption tower 1, remaining gas composition (being called product gas) then enters multichannel rotary valve 02 from the outlet conduit U1 of adsorption tower 1, this moment, the position of rotation of motor made just that many way rotary valves 02 are connected with product feed channel 04 on the adsorption tower outlet conduit U1 process, therefore product gas just enters product feed channel 04, through sending behind control valve 07 steady pressure; At this moment, another adsorption tower (being set at adsorption tower 2) is in desorption process, also has an adsorption tower (being set at adsorption tower 3) bye.By being rotated further motor, change the operating position of many way rotary valves, just can change the connection relation of pipeline, the outlet conduit U1 that makes adsorption tower 1 closes and is in desorption process (logical with any pipeline), inlet duct D1 is then by multichannel rotary valve 01 and stripping gas pipeline 06 are connected down, gas in the adsorption tower 1 is discharged through stripping gas pipeline 06, the pressure of adsorption tower 1 descends, the component that is adsorbed agent absorption (desorbs under the 0.09MPa.G～0.5MPa.G), forms stripping gas at relatively low pressure; At this moment, another adsorption tower (being set at adsorption tower 3) is in adsorption process, also has an adsorption tower (being set at adsorption tower 2) bye.Transfer the intermediate stations of desorption process at adsorption tower 1 to by adsorption process, the internal channel of last multichannel rotary valve 02 upper valve core is communicated with two adsorption towers 1,3 and carries out balanced step-down.
Constantly rotate multichannel rotary valve 01 and 02 by the control motor, just can make adsorption tower 1,2,3 alternately realize above absorption-desorption process, thereby realize the continuous Separation ﹠ Purification of unstripped gas.Whenever rotate a circle (360 °), all adsorption towers are just all finished same absorption-desorption process one time.
See that n in the technical solution of the present invention shown in Figure 3 gets 4, the embodiment three of four adsorption towers 1,2,3 and 4 is promptly arranged.Increase an adsorption tower 4, the lower interface of the last interface of corresponding increase upper valve body, the last docking port of upper valve core and following valve body, the following docking port of bottom spool, the outlet conduit of adsorption tower 4, inlet duct be with upper valve body, the annexation of valve body is identical with adsorption tower 1,2,3 down, and the internal channel of different is upper valve core, bottom spool is different.
In present embodiment three, motor shaft whenever rotates a circle (360 °), and just in each balanced step-down process, the internal channel of upper valve core and bottom spool still is communicated with two adsorption towers wherein.With regard to each adsorption tower, the course of work is identical.(0.01～10.0MPa.G) unstripped gas is after unstripped gas pipeline 05 enters many way rotary valves 1 to relatively high pressure, position of rotation by the control motor can make unstripped gas and D1 connection enter adsorption tower 1, under relatively high pressure, the particular adsorbent of filling absorbs specific component in the adsorption tower 1, remaining gas composition (being called product gas) then enters many way rotary valves 02 from the outlet conduit U1 of adsorption tower 1, this moment, the position of rotation of motor made just that many way rotary valves 02 are connected with product feed channel 04 on the adsorption tower outlet conduit U1 process, therefore product gas just enters product feed channel 04, through sending behind control valve 07 steady pressure, at this moment, an adsorption tower is in desorption process, and two are in balanced step-down process in addition.By being rotated further motor, change the operating position of many way rotary valves, just can change the connection direction of pipeline, the outlet conduit U1 of adsorption tower 1 is closed (illogical) with any pipeline, inlet duct D1 then connects by down many way rotary valves 01 and stripping gas pipeline 06, and the gas in the adsorption tower 1 is discharged through stripping gas pipeline 06, and the pressure of adsorption tower 1 descends, the component that is adsorbed agent absorption (desorbs under the 0.09MPa.G～0.5MPa.G), forms stripping gas at relatively low pressure.
The course of work of adsorption tower 2,3,4 and adsorption tower 1 is identical, constantly rotate many way rotary valves 1 and 2 by the control motor, just can make adsorption tower 1,2,3,4 alternately realize above absorption-desorption process, thereby realize the continuous Separation ﹠ Purification of unstripped gas.Whenever rotate a circle (360 °), all adsorption towers are just all finished same absorption-desorption process one time.
Way according to embodiment three, can be increased to 12 adsorption towers one by one, the lower interface of the last interface of corresponding increase upper valve body, the last docking port of upper valve core and following valve body, the following docking port of bottom spool, the outlet conduit U1-U12 of adsorption tower, inlet duct D1-D12 and upper valve body, the annexation of valve body is identical down, and the internal channel of different is upper valve core, bottom spool is different.Since four adsorption towers, adsorption tower of every increase, just in balanced step-down process, the internal channel of upper valve core is communicated with adsorption tower quantity increases by one.With regard to each adsorption tower, the course of work is identical.
Limited by present adaptable multichannel rotary valve, the quantity of adsorption tower generally is no more than 12.
See that n gets 12 in the technical solution of the present invention shown in Figure 4, the embodiment four of 12 adsorption towers is promptly arranged.(0.01～10.0MPa.G) unstripped gas is after unstripped gas pipeline 05 enters many way rotary valves 1 to relatively high pressure, position of rotation by the control motor can make unstripped gas and D1 connection enter adsorption tower 1, under relatively high pressure, the particular adsorbent of filling absorbs specific component in the adsorption tower 1, remaining gas composition (being called product gas) then enters multichannel rotary valve 02 from the outlet conduit U1 of adsorption tower 1, this moment, the position of rotation of motor made just that multichannel rotary valve 02 is connected with product feed channel 04 on the adsorption tower outlet conduit U1 process, therefore product gas just enters product feed channel 04, through sending behind control valve 07 steady pressure.By being rotated further motor, change the operating position of multichannel rotary valve, just can change the connection direction of pipeline, the outlet conduit U1 of adsorption tower 1 is closed (illogical) with any pipeline, inlet duct D1 then connects by down many way rotary valves 01 and stripping gas pipeline 06, and the gas in the adsorption tower 1 is discharged through stripping gas pipeline 06, and the pressure of adsorption tower 1 descends, the component that is adsorbed agent absorption (desorbs under the 0.09MPa.G～0.5MPa.G), forms stripping gas at relatively low pressure.
The course of work of adsorption tower 2,3,4,5,6,7,8,9,10,11,12 and adsorption tower 1 is identical, constantly rotate multichannel rotary valve 01 and 02 by the control motor, just can make adsorption tower 1,2,3,4,5,6,7,8,9,10,11,12 alternately realize above absorption-desorption process, thereby realize the continuous Separation ﹠ Purification of unstripped gas.Motor shaft whenever rotates a circle (360 °), and all adsorption towers are just all finished same absorption-desorption process one time.
Claims (5)
1, a kind of device of adsorptive separation and purification of industrial gas comprises:
(1) last multichannel rotary valve of forming by upper valve body and upper valve core, upper valve body has n to go up interface, upper valve core have at least two internal channels and n with upper valve body n on the corresponding last docking port of interface, wherein the individual docking port of going up of n-2 has the internal channel intercommunication, going up docking port for one has internal channel to be communicated with a product gas outlet of upper valve body, also having a last docking port is blind mouthful, and the product gas outlet of upper valve body connects the product feed channel;
(2) following multichannel rotary valves of forming by following valve body and bottom spool, following valve body has n lower interface, bottom spool have at least two internal channels and n with the corresponding following docking port of a following valve body n lower interface, wherein the individual docking port down of n-2 has the internal channel intercommunication, a following docking port has internal channel to be communicated with a raw material gas inlet of valve body down, also have a following docking port to have internal channel to be communicated with a stripping gas outlet of valve body down, the raw material gas inlet of following valve body connects the unstripped gas pipeline, and the stripping gas outlet of following valve body connects the stripping gas pipeline;
It is characterized in that: also comprise
(3) n adsorption tower, the outlet conduit of each adsorption tower and inlet duct are connected the last interface of upper valve body of a pair of correspondence and the lower interface of following valve body respectively;
(4) motors, coaxial drive upper valve core and bottom spool rotate, and the following docking port of valve body raw material gas inlet is outlet conduit and the inlet duct that corresponding relation is also connected same adsorption tower simultaneously under the last docking port of the connection upper valve body product gas outlet of described upper valve core and the connection of described bottom spool; The following docking port for valve body stripping gas outlet under the connection of blind mouthful last docking port and described bottom spool of described upper valve core is outlet conduit and the inlet duct that corresponding relation is also connected same adsorption tower simultaneously;
Said n is to be equal to or greater than 2 natural number.
2, the device of adsorptive separation and purification of industrial gas according to claim 1 is characterized in that being filled with in the described adsorption tower one or more adsorbents in activated alumina, silica gel, molecular sieve, the activated carbon.
3, the device of adsorptive separation and purification of industrial gas according to claim 1 is characterized in that, described natural number n gets any one in 2 to 12.
4, the device of adsorptive separation and purification of industrial gas according to claim 1, described product feed channel is provided with control valve.
5, the device of adsorptive separation and purification of industrial gas according to claim 1 is characterized in that described raw gas pressure in 0.01MPa.G～10MPa.G scope, and stripping gas pressure is in-0.09MPa.G～0.5MPa.G scope.
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| CNA2008100322635A CN101474520A (en) | 2008-01-03 | 2008-01-03 | Device for adsorptive separation and purification of industrial gas |
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|---|---|---|---|
| CNA2008100322635A CN101474520A (en) | 2008-01-03 | 2008-01-03 | Device for adsorptive separation and purification of industrial gas |
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| CN112892153A (en) * | 2021-01-22 | 2021-06-04 | 山东津挚环保科技有限公司 | Pressure swing adsorption process based on multi-channel rotary valve |
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| CN114699880B (en) * | 2022-03-16 | 2023-12-19 | 浙江天采云集科技股份有限公司 | H is extracted from refinery dry gas separation 2 And C 2+ Full-temperature range simulated rotary moving bed pressure swing adsorption process |
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