CN208829260U - Pressure swing adsorption hydrogen production system - Google Patents
Pressure swing adsorption hydrogen production system Download PDFInfo
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- CN208829260U CN208829260U CN201821518431.7U CN201821518431U CN208829260U CN 208829260 U CN208829260 U CN 208829260U CN 201821518431 U CN201821518431 U CN 201821518431U CN 208829260 U CN208829260 U CN 208829260U
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 148
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 239000001257 hydrogen Substances 0.000 title claims abstract description 66
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 66
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 131
- 238000000034 method Methods 0.000 claims abstract description 34
- 230000008569 process Effects 0.000 claims abstract description 30
- 239000003463 adsorbent Substances 0.000 claims abstract description 22
- 238000007664 blowing Methods 0.000 claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000000872 buffer Substances 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 5
- 230000007420 reactivation Effects 0.000 claims description 4
- 238000011069 regeneration method Methods 0.000 abstract description 19
- 230000008929 regeneration Effects 0.000 abstract description 18
- 238000011084 recovery Methods 0.000 abstract description 12
- 239000012535 impurity Substances 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000005086 pumping Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000007872 degassing Methods 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 14
- 239000012141 concentrate Substances 0.000 description 11
- 206010016766 flatulence Diseases 0.000 description 8
- 238000011068 loading method Methods 0.000 description 7
- 238000000746 purification Methods 0.000 description 7
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000000571 coke Substances 0.000 description 5
- 230000008439 repair process Effects 0.000 description 5
- 238000003795 desorption Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 102220573536 C-C motif chemokine 5_T31A_mutation Human genes 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000012163 sequencing technique Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000000274 adsorptive effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
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- Separation Of Gases By Adsorption (AREA)
- Hydrogen, Water And Hydrids (AREA)
Abstract
本实用新型公开了一种变压吸附制氢系统，包括吸附塔、顺放装置、逆放装置和抽真空装置，吸附塔为多台，每个吸附塔具有底部管线和顶部管线，底部管线用于导入原料气，顶部管线用于输出产品气；顺放装置与顶部管线连通，以收集顺放过程中的顺放气；逆放装置与底部管线连通，以将吸附塔吸附的杂质气体解吸形成逆放气；抽真空装置与底部管线连通，以将吸附塔内抽真空。此技术主要通过改变吸附剂再生工艺，采用真空再生法，从而使吸附剂在负压下将吸附的杂质气体完全解吸，提高吸附剂的吸附能力，进而使吸附剂的再生效率和氢气回收率均有效提高。解决了现有技术中的变压吸附制氢系统氢气回收率较低的问题。
The utility model discloses a pressure swing adsorption hydrogen production system, which comprises an adsorption tower, a smooth discharge device, a reverse discharge device and a vacuum pumping device. There are multiple adsorption towers, and each adsorption tower has a bottom pipeline and a top pipeline. For the introduction of raw material gas, the top pipeline is used to output product gas; the smooth discharge device is connected with the top pipeline to collect the smooth discharge during the smooth discharge process; the reverse discharge device is connected with the bottom pipeline to desorb the impurity gas adsorbed by the adsorption tower to form Reverse degassing; the vacuuming device is connected with the bottom pipeline to vacuumize the adsorption tower. This technology mainly changes the adsorbent regeneration process and adopts the vacuum regeneration method, so that the adsorbent can completely desorb the adsorbed impurity gas under negative pressure, improve the adsorption capacity of the adsorbent, and then make the regeneration efficiency and hydrogen recovery rate of the adsorbent equal. effectively improve. The problem of low hydrogen recovery rate in the pressure swing adsorption hydrogen production system in the prior art is solved.
Description
Technical field
The present invention relates to coal chemical technologies, in particular to a kind of pressure swing adsorption hydrogen production system.
Background technique
Currently, raw coke oven gas removes the impurity absorption other than hydrogen by pressure-variable adsorption and removes to obtain in coal chemical technology
Obtain the higher hydrogen of purity.
However in the actual production process, the pretreatment process that existing raw coke oven gas is used without transformation pressure swing adsorption hydrogen production
(TSA)-Vacuum Pressure Swing Adsorption process (VPSA)-pressure-variable adsorption process (PSA) process flow, this technique in actual production, in advance
Treatment process processing capacity is insufficient, and purification workshop section is using regeneration process is rinsed, and actual motion regeneration effect is poor, adsorbent reactivation
It is not thorough, hydrogen recovery rate is lower.
Summary of the invention
The main purpose of the present invention is to provide a kind of raw coke oven gas without under the operating condition of transformation, using pressure swing adsorption hydrogen production work
Skill, at least to solve the problems, such as that hydrogen generating system hydrogen recovery rate in the prior art is lower, regeneration effect is poor.
To achieve the goals above, the present invention provides a kind of pressure swing adsorption hydrogen production systems, comprising: adsorption tower, adsorption tower
Be more, each adsorption tower have bottom line and overhead line, bottom line be connected to by the bottom of adsorption tower with adsorption tower with
Import unstripped gas, adsorption tower is used to adsorb foreign gas in unstripped gas to generate product gas, overhead line by adsorption tower top
Portion is connected to output products gas with adsorption tower；It along device is put, is connected to overhead line, to collect along the suitable deflation during putting；
Inverse put device, is connected to bottom line, and the foreign gas that adsorption tower is adsorbed, which desorbs, to form reverse gas；Vacuum evacuation device, with
Bottom line connection, will vacuumize in adsorption tower.
Further, multiple adsorption towers are divided into two groups；Wherein, it is connected to the overhead line of two groups of adsorption towers along putting device,
To collect along the suitable deflation during putting.
Further, inverse put device includes: the first surge tank, and the arrival end of the first surge tank is connected to bottom line, with
It receives and buffers reverse gas.
Further, inverse put device further include: cold blowing gas generating device is connected to will be inverse with the outlet end of the first surge tank
Deflation is converted into cold blowing gas.
Further, inverse put device further include: the first pretreater, the first pretreater and cold blowing gas generating device and
Cold blowing gas use device is connected to, and cold blowing pneumatic transmission is entered pretreatment process and carries out adsorbent reactivation cold blowing use.
Further, vacuum evacuation device includes: water ring vacuum pump, the arrival end of water ring vacuum pump be connected to bottom line with
Vacuum solutions air-breathing is generated to vacuumizing in adsorption tower.
Further, multiple adsorption towers are divided into two groups；Wherein, water ring vacuum pump is two, two water ring vacuum pumps and two
The bottom line of group adsorption tower is connected to.
Further, vacuum evacuation device further include: the second surge tank, the arrival end of the second surge tank and water ring vacuum pump
Outlet end connection, to receive simultaneously buffer vacuum stripping gas.
Further, vacuum evacuation device further include: hot blow gas generating device is connected to the outlet end of the second surge tank, with
By vacuum desorption gas shift at hot blow gas.
Further, vacuum evacuation device further include: the second pretreater, the second pretreater and hot blow gas generating device connect
It is logical, to be used for the second pretreater adsorbent reactivation hot blow.
Using the pressure swing adsorption hydrogen production system of technical solution of the present invention, including adsorption tower, along putting device, inverse put device and pumping
Vacuum plant, adsorption tower be more, each adsorption tower have bottom line and overhead line, bottom line by adsorption tower bottom
It is connected to adsorption tower to import unstripped gas, adsorption tower is used to adsorb the foreign gas in unstripped gas to generate product gas, head tube
Line is connected to by the top of adsorption tower with adsorption tower with output products gas；It is connected to along device is put with overhead line, to collect suitable let off
Suitable deflation in journey is used for concentrate process (VPSA) pre-loading；Inverse put device, is connected to bottom line, and adsorption tower is adsorbed
Foreign gas desorb to form reverse gas；Vacuum evacuation device is connected to bottom line, will be vacuumized in adsorption tower.By adopting
The adsorption capacity of adsorbent is improved so that adsorbent be made under negative pressure to desorb foreign gas completely with vacuum regeneration process, into
And effectively improve the regeneration effect of adsorbent and hydrogen recovery rate.Solves pressure swing adsorption hydrogen production system in the prior art
The lower problem of hydrogen recovery rate.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is optional a kind of structural schematic diagram of pressure swing adsorption hydrogen production system according to embodiments of the present invention；And
Fig. 2 is optional a kind of pressure swing adsorption hydrogen production working-flow schematic diagram according to embodiments of the present invention.
Wherein, the above drawings include the following reference numerals:
10, adsorption tower；20, suitable to put device；30, inverse put device；31, the first surge tank；32, cold blowing gas generating device；
321, first filter；322, cold blowing tympanites blower；323, cooler；33, the first pretreater；40, vacuum evacuation device；41,
Water ring vacuum pump；42, the second surge tank；43, hot blow gas generating device；431, the second filter；432, hot blow tympanites blower；
433, stripping gas surge tank；434, heater；44, the second pretreater.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
Pressure swing adsorption hydrogen production system according to embodiments of the present invention, as shown in Figure 1, including adsorption tower 10, along putting device 20, inverse
Device 30 and vacuum evacuation device 40 are put, adsorption tower 10 is more, and each adsorption tower 10 has bottom line and overhead line, bottom
Pipeline is connected to import unstripped gas with adsorption tower 10 by the bottom of adsorption tower 10, and adsorption tower 10 is used to adsorb the impurity in unstripped gas
To generate product gas, overhead line is connected to by the top of adsorption tower 10 with adsorption tower 10 with output products gas gas；It is suitable to put device
20 are connected to overhead line, to collect along the suitable deflation during putting, are used for concentrate process (VPSA) pre-loading；Inverse put device
30, it is connected to bottom line, desorbs the foreign gas that adsorption tower 10 adsorbs to form reverse gas；Vacuum evacuation device 40 and bottom
Pipeline connection, in adsorption tower 10 are vacuumized.
Using the pressure swing adsorption hydrogen production system of technical solution of the present invention, including adsorption tower 10, along putting device 20, inverse put device
30 and vacuum evacuation device 40, adsorption tower 10 is more, and each adsorption tower 10 has bottom line and an overhead line, bottom line by
The bottom of adsorption tower 10 is connected to import unstripped gas with adsorption tower 10, adsorption tower 10 be used to adsorb the foreign gas in unstripped gas with
Product gas is generated, overhead line is connected to by the top of adsorption tower 10 with adsorption tower 10 with output products gas；It is suitable to put device 20 and top
Pipeline connection in portion's is used for concentrate process (VPSA) pre-loading to collect along the suitable deflation during putting；Inverse put device 30 and bottom
Pipeline connection, the foreign gas that adsorption tower 10 adsorbs is desorbed to form reverse gas, and a part goes out hydrogen generating system, and a part is used for
Pretreatment process regenerates cold blowing gas；Vacuum evacuation device 40 is connected to bottom line, and in adsorption tower 10 are vacuumized, so that absorption
Agent regeneration, Vacuum solutions air-breathing a part go out hydrogen generating system, and a part is blown for pretreatment process regenerated heat.To make adsorption tower
Adsorbent under negative pressure desorbs foreign gas completely in 10, improves the adsorption capacity of adsorbent, and then makes the regeneration of adsorbent
Effect and hydrogen recovery rate effectively improve.It is lower to solve pressure swing adsorption hydrogen production system hydrogen recovery rate in the prior art
Problem.
When it is implemented, adsorption tower 10 is 12,12 adsorption towers 10 are run simultaneously, have 4 adsorption towers 10 to be in always
Adsorbed state, adsorption process are 3 pressure-variable adsorptions pressed, vacuumized.It is two groups that 12 adsorption towers 10, which are divided to,；Wherein, suitable to put dress
It sets 20 to be connected to the overhead line of two groups of adsorption towers 10 to collect along the suitable deflation during putting, is along the stripping gas during putting
Along deflating, for hydrogen content 70% or more, which is used for concentrate process pre-loading, and the rate of recovery of hydrogen can be improved.
Specifically, bottom line includes 1# line, 6# line, 7# line and 8# line, wherein 1# line is feeding line, and 6# line is inverse
Unwrapping wire, 7# line and 8# line are to vacuumize line；Overhead line includes 2# line, 3# line, 4# line and 5# line, wherein 2# line is to produce
Product line, 3# line are one and eventually to fill line, and 4# line is two equal lines, and 5# line is three equal and along unwrapping wire.Along put the arrival end of device 20 with
The 4# line connection of two groups of adsorption towers 10, removes concentrate workshop section pre-loading along the outlet end for putting device 20.
Further, inverse put device 30 desorbs the foreign gas that adsorption tower 10 adsorbs to form reverse gas, and a part goes out to make
Hydrogen system, a part regenerate cold blowing gas for pretreatment process, and inverse put device 30 is set including the first surge tank 31, the generation of cold blowing gas
Standby 32 and first pretreater 33, the arrival end of the first surge tank 31 is connected to the 6# line of bottom line, inverse to receive and buffer
It deflates；Cold blowing gas generating device 32 is connected to the outlet end of the first surge tank 31 reverse gas is converted into cold blowing gas；First is pre-
Treating column 33 is connected to cold blowing gas generating device 32 and cold blowing gas use device, by cold blowing gas carry out pretreatment and will be pre-
Treated, and cold blowing gas is delivered to cold blowing gas use device.Wherein, cold blowing gas generating device 32 includes first filter 321, cold
Air blowing air blower 322 and cooler 323, the arrival end of first filter 321 is connected to the outlet end of the first surge tank 31, with right
Reverse gas is filtered；The arrival end of cold blowing tympanites blower 322 is connected to by filtering with the outlet end of first filter 321
Reverse gas afterwards pressurizes；The arrival end of cooler 323 is connected to the outlet end of cold blowing tympanites blower 322, to by adding
Reverse gas after pressure is cooled down to form cold blowing gas.
Vacuum evacuation device 40 includes that water ring vacuum pump 41, the second surge tank 42, hot blow gas generating device 43 and second are pre-
Treating column 44, water ring vacuum pump 41 are two, the arrival end of two water ring vacuum pumps 41 and the bottom line of two groups of adsorption towers 10
7# line be connected to 8# line with to vacuumized in adsorption tower 10 generate Vacuum solutions air-breathing；The arrival end and water ring of second surge tank 42
The outlet end of vacuum pump 41 is connected to, to receive simultaneously buffer vacuum stripping gas；Hot blow gas generating device 43 and the second surge tank 42
Outlet end connection, by vacuum desorption gas shift at hot blow gas；Second pretreater 44 and hot blow gas generating device 43 and heat
Air blowing use device is connected to, and carries out pretreatment by hot blow gas and pretreated hot blow gas is delivered to hot blow gas to use dress
It sets.
Specifically, hot blow gas generating device 43 includes the second filter 431, hot blow tympanites blower 432, stripping gas surge tank
433 and heater 434.The arrival end of second filter 431 is connected to the outlet end of the second surge tank 42 to vacuum desorption
Gas is filtered；Hot blow tympanites blower 432 is used to pressurize to by filtered Vacuum solutions air-breathing；Stripping gas surge tank
433 for buffering the stripping gas after pressurization；Heater 434 generates the conveying of hot blow gas for being heated to stripping gas
To the second pretreater 44.
The flushing regeneration flow process for purifying workshop section (PSA) is changed to vacuum by pressure swing adsorption hydrogen production of embodiment of the present invention system
Process is regenerated, hydrogen recovery rate is improved, improves the regeneration effect of adsorbent；Workshop section is purified simultaneously increases by 2 adsorption towers 10
Also hydrogen generating system hydrogen output is suitably increased.
As shown in Fig. 2, this hydrogen generating system uses 12-4-3VPSA process flow (purification), it may be assumed that 12 adsorption towers 10 are simultaneously
Operation has 4 adsorption towers 10 to be in adsorbed state, 3 pressure-variable adsorptions pressed, vacuumized always.Each adsorption tower 10 adsorbs
With regenerative process by absorption, continuous 3 drop pressures, along put, inverse put, be isolated, vacuumize, continuous 3 boost pressures and product
Gas lift pressure and etc. composition.
Unstripped gas is concentrate gas of the raw coke oven gas from pretreatment workshop section after concentrate workshop section deoxidation treatment, and pressure is
0.5MPa (G), 40 DEG C of temperature or so the 1# lines for entering the bottom lines for purifying workshop section separate the drop that may be carried secretly, then certainly
10 bottom of adsorption tower enters the adsorption tower 10 (having four always) that absorption working condition is in four adsorption tower T31A~L, is adsorbing
Adsorbent successively selects under absorption in tower 10, and the disposable nearly all foreign gas removed other than hydrogen obtains H2 purity and is greater than
99.9% purification pneumatic transmission enters hydrogen gas compressor, is forced into 1.7-2.1MPA through compressor and hydrogenation plant is sent to use as raw material.
After adsorbent adsorption saturation in adsorption tower 10, other adsorption towers 10 are switched to by program-controlled valve, absorption is full
The adsorption tower 10 of sum is then transferred to regenerative process.In regenerative process, adsorption tower 10 first passes around continuous 3 drop pressure processes,
And carry out being used for concentrate workshop section pre-loading along the hydrogen for recycling dead space in adsorption tower 10 as far as possible by suitable device 20 of putting, from
And it can guarantee the abundant recycling of hydrogen.Then inverse put step is carried out for most of gaseous impurity solution of absorption by inverse put device 30
Inhale, after inverse put process whole, to regenerate adsorbent thoroughly, with by vacuum evacuation device 40 against absorption side
It is vacuumized to the adsorption bed in adsorption tower 10, further decreases the partial pressure of impurity composition, keep adsorbent thorough
Regeneration.Reverse gas is discharged into the first surge tank 31, is then located in advance after the pressurization of cold blowing tympanites blower 322 to temp.-changing adsorption (TSA)
Science and engineering sequence is used as cold blowing gas gas source when regeneration；It vacuumizes stripping gas to be discharged into the second surge tank 42, through hot blow tympanites blower 432
Hot blow gas gas source when TSA being sent to be used as regeneration after pressurization.
The hydrogen generating system brief description of the process of the application is as follows:
1), temp.-changing adsorption pretreatment process:
Through the compressed raw coke oven gas of helical-lobe compressor (claiming unstripped gas) with pressure~0.65MPa (g), temperature~40 DEG C (warp
After helical-lobe compressor cooler and gas-liquid separator separates water) enter ammonium salt scrubbing tower, after washed, 90% or more can be removed
Ammonia and ammonium salt.
It is then fed into pretreater, except tar removing and naphthalene (tar content≤3mg/Nm3, naphthalene content≤5mg/Nm3) etc. are changed
Object is closed, system is made of eight pretreaters, wherein six are in adsorbed state, and another two are in reproduced state.When pre- place
Tower tar adsorption is managed, the compounds such as naphthalene are transferred to regenerative process when approaching saturation.
2), Vacuum Pressure Swing Adsorption hydrogen upgrading and deoxidation step summary:
The purification semicoke coal gas of 0.62MPa (G) enters from tower bottom after pretreatment is in absorption working condition in adsorption tower
Adsorption tower, adsorbent select adsorb under conditions of remove hydrogen other than impurity, obtain hydrogen content be greater than 45% concentrate hydrogen
Gas enters deoxidation tower deoxidation after heated, Vacuum Pressure Swing Adsorption purification process is sent after the gas-liquid separation that cooled.
3), Vacuum Pressure Swing Adsorption hydrogen purification process is sketched:
The deoxidation concentrate hydrogen of 0.55MPa (G) enters in adsorption tower the adsorption tower for being in absorption working condition from tower bottom, is inhaling
Disposably remove impurity other than hydrogen under conditions of attached dose of selection absorption, obtain the product gas that hydrogen content is greater than 99.9%, send to
Hydrogenation plant is used as raw material.
This process rinses regeneration technology by intrinsic pressure-variable adsorption and is changed to pressure-variable adsorption vacuum regeneration technique, new process
Process is 12-4-3V-PSA, wherein 12 towers are run, 4 tower absorption, 3 times pressure vacuumizes pressure-variable adsorption.Its process cycle
Step sequence is 1. to adsorb, 2. one down, 3. two down, and 4. three drop, and 5. along putting, 6. inverse put, is 7. isolated, and is 8. vacuumized, and 9. three
It rises, 10. two rises,One rises,Final rise.
Each step sequence go on smoothly rely primarily on sequencing valve under program control quickly switching to realize, each step sequence
When adsorption tower operating state it is as follows:
1. absorption: unstrpped gas is by 1# line into product goes out through 2# line；
2. one down: carrying out two equal tower 3# valves and open, high-pressure tower gas enters lower pressure column through 3# line and pressed；
3. two down: the 4# valve for carrying out two two equal towers is opened, and high-pressure tower gas enters lower pressure column through 4# line and pressed；
4. three drop: carrying out three two equal tower 5# valves and open, high-pressure tower gas enters lower pressure column through 5# line and pressed；
5. along putting: gas enters in V32 through 5# line and stores in tower, eventually for concentrate pre-loading, improves hydrogen recovery rate；
6. inverse put: remaining low-pressure gas and the foreign gas desorbed are sent through 6# line to V33 in tower, are finally pressurizeed through blower
After gone TSA make regeneration cold blowing gas；
7. isolation: the vacant step sequence occurred in PSA programming process, all sequencing valves are in close state；
8. vacuumizing: remaining low-pressure gas and the foreign gas desorbed after vacuum pumping negative pressure by entering in adsorption tower
V34 send to TSA after the pressurization of hot blow gas fan and makees regenerated heat air blowing；
9. three rise: with above-mentioned 4. described；
10. two rise: with above-mentioned 3. described；
One rises: with above-mentioned 2. described；
Final rise: being opened by the regulating valve that 2# line is connected to 3# line, and the 3# valve of final rise tower is opened, and high-voltage product gas is adjusted through connection
Section valve enters 3# line and rises to adsorptive pressure into the adsorption tower, and adsorption tower completes entire regenerative process, carries out for absorption next time
Prepare.
The technique step sequence of adsorption tower T31A~L be all it is identical, it is only successively wrong in the runing time of each step sequence
Open 1/12 adsorption time, thereby realizing always has four towers to be in adsorbed state, other eight towers be respectively at it is different again
Raw state, ensure that the continuous separation and purification of unstripped gas.
Pressure swing adsorption hydrogen production system of the embodiment of the present invention has the advantages that
1) 15%-20% greatly improved in the hydrogen generating system hydrogen recovery rate of the present embodiment；The hydrogen manufacturing is more per hour at present
Hydrogen producing 4000Nm3, by the hydrogen consumption 580Nm for adding hydrogen actual production oil per ton3Calculate, one hour can fecund 6.9T it is oily, with oil per ton
2000 yuan of profit is calculated, and can generate profit 1.38 ten thousand yuan per hour more, then annual (calculating every year by 8000 hours) can realize benefit more
Moisten 110,400,000 yuan.
2) the pretreatment processing capacity of the hydrogen generating system of the present embodiment is substantially improved, system run all right, under system pressure drop
Drop is obvious；Single adsorption tower 10 crosses tolerance decline, and adsorption time is greatly reduced, and the regeneration effect of adsorbent is good, adsorbent
Service life is effectively extended, and the cycle of operation of whole system is elongated, realizes the serialization and long life of system production, drop
The low overall cost of operation of system.
The above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of pressure swing adsorption hydrogen production system characterized by comprising
Adsorption tower (10), the adsorption tower (10) are more, and each adsorption tower (10) has bottom line and overhead line,
The bottom line is connected to by the bottom of the adsorption tower (10) with the adsorption tower (10) to import unstripped gas, the adsorption tower
(10) for adsorbing foreign gas in unstripped gas to generate product gas, the overhead line by the adsorption tower (10) top
It is connected to the adsorption tower (10) with output products gas；
It along device (20) are put, is connected to the overhead line, to collect along the suitable deflation during putting；
Inverse put device (30), is connected to the bottom line, and the foreign gas that the adsorption tower (10) are adsorbed is desorbed to be formed
Reverse gas；
Vacuum evacuation device (40), is connected to the bottom line, will vacuumize in the adsorption tower (10).
2. pressure swing adsorption hydrogen production system according to claim 1, which is characterized in that multiple adsorption towers (10) are divided into two
Group；
Wherein, described be connected to the overhead line of adsorption tower (10) described in two groups along putting device (20), with receive it is suitable put suitable put
Gas.
3. pressure swing adsorption hydrogen production system according to claim 1, which is characterized in that the inverse put device (30) includes:
The arrival end of first surge tank (31), first surge tank (31) is connected to the bottom line, to receive and buffer
The reverse gas.
4. pressure swing adsorption hydrogen production system according to claim 3, which is characterized in that the inverse put device (30) further include:
Cold blowing gas generating device (32) is connected to cold the reverse gas to be converted into the outlet end of first surge tank (31)
It blows.
5. pressure swing adsorption hydrogen production system according to claim 4, which is characterized in that the inverse put device (30) further include:
First pretreater (33), first pretreater (33) make with the cold blowing gas generating device (32) and cold blowing gas
It is connected to device, the cold blowing gas pre-process and the pretreated cold blowing gas is delivered to the cold blowing gas
Use device.
6. pressure swing adsorption hydrogen production system according to claim 1, which is characterized in that the vacuum evacuation device (40) includes:
The arrival end of water ring vacuum pump (41), the water ring vacuum pump (41) is connected to the adsorption tower with the bottom line
(10) it is vacuumized in and generates Vacuum solutions air-breathing.
7. pressure swing adsorption hydrogen production system according to claim 6, which is characterized in that multiple adsorption towers (10) are divided into two
Group；
Wherein, the water ring vacuum pump (41) is two, two water ring vacuum pumps (41) and adsorption tower (10) described in two groups
The bottom line be connected to.
8. pressure swing adsorption hydrogen production system according to claim 6, which is characterized in that the vacuum evacuation device (40) is also wrapped
It includes:
Second surge tank (42), the arrival end of second surge tank (42) and the outlet end of the water ring vacuum pump (41) connect
It is logical, to receive and buffer the Vacuum solutions air-breathing.
9. pressure swing adsorption hydrogen production system according to claim 8, which is characterized in that the vacuum evacuation device (40) is also wrapped
It includes:
Hot blow gas generating device (43) is connected to the outlet end of second surge tank (42), and the Vacuum solutions air-breathing is turned
Change hot blow gas into.
10. pressure swing adsorption hydrogen production system according to claim 9, which is characterized in that the vacuum evacuation device (40) is also wrapped
It includes:
Second pretreater (44), second pretreater (44) is connected to the hot blow gas generating device (43), to be used for
The adsorbent reactivation hot blow of second pretreater (44).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108793077A (en) * | 2018-09-17 | 2018-11-13 | 陕西东鑫垣化工有限责任公司 | Pressure swing adsorption hydrogen production system |
| CN112744786A (en) * | 2019-10-31 | 2021-05-04 | 内蒙古伊泰煤制油有限责任公司 | Pressure swing adsorption hydrogen production process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108793077A (en) * | 2018-09-17 | 2018-11-13 | 陕西东鑫垣化工有限责任公司 | Pressure swing adsorption hydrogen production system |
| CN108793077B (en) * | 2018-09-17 | 2024-08-06 | 陕西东鑫垣化工有限责任公司 | Pressure swing adsorption hydrogen production system |
| CN112744786A (en) * | 2019-10-31 | 2021-05-04 | 内蒙古伊泰煤制油有限责任公司 | Pressure swing adsorption hydrogen production process |
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