CN209005511U - A kind of five tower pressure swing adsorption hydrogen production devices - Google Patents

A kind of five tower pressure swing adsorption hydrogen production devices Download PDF

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Publication number
CN209005511U
CN209005511U CN201821779089.6U CN201821779089U CN209005511U CN 209005511 U CN209005511 U CN 209005511U CN 201821779089 U CN201821779089 U CN 201821779089U CN 209005511 U CN209005511 U CN 209005511U
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tower
adsorption tower
adsorption
surge tank
pressure
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徐占杰
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Shandong Jinzhi Environmental Protection Technology Co., Ltd
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Shandong Huatian Environmental Protection Technology Co Ltd
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Abstract

The utility model relates to pressure swing adsorption hydrogen production fields, specifically a kind of five towers pressure swing adsorption hydrogen production device, including unstripped gas surge tank, adsorption tower A, adsorption tower B, adsorption tower C, adsorption tower D, adsorption tower E, product gas surge tank and stripping gas surge tank, five adsorption towers are connected with 6 sequencing valves respectively, 2 sequencing valves are connected at every adsorption column inlet, every adsorption column outlet connects 4 sequencing valves, each absorption column overhead is connect with product gas surge tank, and each adsorption tower tower bottom is connect with stripping gas surge tank.The utility model is different from traditional 6 towers or 8 tower process, is reached higher hydrogen purity using less adsorption tower, reduce equipment investment and technique occupied area based on 5 tower process.

Description

A kind of five tower pressure swing adsorption hydrogen production devices
Technical field
The utility model relates to a kind of five tower pressure swing adsorption hydrogen production devices, belong to pressure swing adsorption hydrogen production field.
Background technique
With the development of petrochemical industry and its downstream industry, hydrogen obtains more and more extensive as a kind of important raw material Application, and the source of hydrogen is mainly petroleum and coal.China is the country used coal as its main energy source, the energy knot of few more coals of oil Structure restricts our development, so produce methanol, then dissociated methanol hydrogen manufacturing by coal, be a sustainable development it is permanent it Road.
Contain H in traditional methanol decomposition hydrogen manufacturing product gas2About 73-74%, remaining is CO2, CO, a small amount of moisture, unreacted is complete Methanol etc..Usual means are all using pressure swing adsorption method refined product hydrogen, and purified rear product hydrogen purity is up to 99% More than.Methanol decomposition hydrogen manufacturing is used widely in recent years, and wherein the control of the yield and production cost of hydrogen directly affects The economic benefit of manufacturing enterprise, so research pressure-variable adsorption mention hydrogen necessity it is outstanding day by day.
Utility model content
The utility model aims at the problems existing in the prior art, and provides a kind of five tower pressure swing adsorption hydrogen production devices, equipment Quantity is few, and the cycle of operation is fast, hydrogen making purity is high.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is as follows: a kind of five tower pressure-variable adsorption systems Hydrogen production device, including unstripped gas surge tank, adsorption tower A, adsorption tower B, adsorption tower C, adsorption tower D, adsorption tower E, product gas surge tank With stripping gas surge tank, every adsorption tower is connected with 6 sequencing valves respectively, and each adsorption column inlet is all connected with 2 sequencing valves, respectively A adsorption column outlet is all connected with 4 sequencing valves;Absorption column overhead connect with product gas surge tank, adsorption tower tower bottom with desorption The connection of gas surge tank.
The adsorption tower A, adsorption tower B, adsorption tower C, adsorption tower D and adsorption tower E pass through sequencing valve between any two and mutually interconnect It connects, particularly adsorption tower A is connect by sequencing valve with adsorption tower B, adsorption tower C, adsorption tower D and adsorption tower E;Adsorption tower B is logical Sequencing valve is crossed to connect with adsorption tower A, adsorption tower C, adsorption tower D and adsorption tower E;Adsorption tower C passes through sequencing valve and adsorption tower A, suction Attached tower B, adsorption tower D are connected with adsorption tower E;Adsorption tower D passes through sequencing valve and adsorption tower A, adsorption tower B, adsorption tower C and adsorption tower E connection;Adsorption tower E is connect by sequencing valve with adsorption tower A, adsorption tower B, adsorption tower C and adsorption tower D, realizes gas in difference Material transferring between adsorption tower.
The adsorption tower A, attached tower B, adsorption tower C, adsorption tower D and adsorption tower E connect product gas by tower top sequencing valve and delay Tank is rushed, gas directly can enter product gas surge tank from each absorption column overhead by sequencing valve.
The adsorption tower A, attached tower B, adsorption tower C, adsorption tower D connect stripping gas by tower bottom sequencing valve with adsorption tower E Surge tank, gas directly can enter stripping gas surge tank from each adsorption tower tower bottom by sequencing valve.
According to these devices, the utility model pressure-variable adsorption process uses 5-1-3/P technique, i.e. pressure swing adsorption system has 5 Platform adsorption tower is carved with 1 adsorption tower and is adsorbed when each, each adsorption tower is completed 3 times in a cycle and pressed, and works as absorption Agent absorption regenerates adsorbent in such a way that (P) is rinsed in decompression close to when being saturated.Each adsorption tower recycles each time It is experience absorption (A), the first stage pressure equilibrium drop (E1D), the second stage pressure equilibrium drop (E2D), equal along (PP), third stage pressure is put Weighing apparatus drop (E3D), inversely bleed off pressure (D), flushing (P), third stage pressure equilibrium liter (E3R), the second stage pressure equilibrium liter (E2R), every From (IS), the first stage pressure equilibrium liter (E1R), final boosting (FR) 12 steps, 5 adsorption towers are mutually wrong in proceedings It opens, to guarantee that unstripped gas continuously inputs, product gas is continuously exported.Reasonable time can be selected in operation according to actual needs.
The bottom the adsorption tower A connects sequencing valve charging, and top connects sequencing valve and exports hydrogen, is equipped with induction in adsorbent Device, when adsorption capacity realizes absorption step close to charging and product sequencing valve, pressure 1.6MPa when being saturated, is automatically closed Suddenly.
Gas in the adsorption tower A flows into adsorption tower C by tower top sequencing valve and carries out pressure equilibrium, when two adsorption tower pressures When power is of substantially equal, which terminates, and closes tower top sequencing valve.Pressure process drops to 0.8MPa by 1.6MPa, realizes that one is equal Step drops.
Gas in the adsorption tower A flows into adsorption tower D by tower top sequencing valve and carries out pressure equilibrium, when two adsorption tower pressures When power is of substantially equal, which terminates, and pressure process drops to 0.4MPa by 0.8MPa, realizes two down (E2D) step.
Gas is entered at the top of adsorption tower E by tower top sequencing valve in the adsorption tower A, is rinsed to adsorption tower E, is rushed Gas washing is delivered to out-of-bounds through bottom sequencing valve, and when the adsorbent reactivation in adsorption tower E is complete, which terminates, pressure process 0.3MPa is dropped to by 0.4MPa, realization is suitable to put (PP) step.
Gas in the adsorption tower A flows into adsorption tower E by tower top sequencing valve and carries out pressure equilibrium, when two adsorption tower pressures When power is of substantially equal, which terminates, and pressure process drops to 0.15MPa by 0.3MPa, realizes that three drop (E3D) step.
Remaining gas in the adsorption tower A, is inversely bled off pressure by bottom sequencing valve and is discharged into stripping gas surge tank, and guaranteed Stripping gas surge tank can constantly out-of-bounds, when adsorption tower A pressure is close to normal pressure, which terminates, pressure process for stable output 0.01MPa is dropped to by 0.15MPa, realizes inverse put (D) step.
Gas in the adsorption tower B is released by the way that top sequencing valve is suitable into adsorption tower A, to the adsorbent in adsorption tower A It is rinsed regeneration, gas is rinsed and is delivered to out-of-bounds through bottom sequencing valve, when the adsorbent reactivation in adsorption tower A is complete, the step Suddenly terminate.Pressure process is 0.01MPa, realizes and rinses (P) step.
Gas in the adsorption tower B flows into adsorption tower A by tower top sequencing valve and carries out pressure equilibrium, when two adsorption tower pressures When power is of substantially equal, which terminates.Pressure process rises to 0.15MPa by 0.01MPa, realizes that three rise (E3R) step.
Gas enters adsorption tower A by tower top sequencing valve in the adsorption tower C, pressure equilibrium is carried out, when adsorption tower A and suction When attached tower C pressure is of substantially equal, which terminates, and closes tower top sequencing valve.Pressure process rises to 0.4MPa by 0.15Mpa, Realize that two rise (E2R) step.
Gas flows into adsorption tower A by tower top sequencing valve in the adsorption tower D, pressure equilibrium is carried out, when two pressure tower bases When this is equal, which terminates.Pressure process rises to 0.8MPa by 0.4Mpa, realizes that one rises (E1R) step.
The adsorption tower A is temporarily isolating with other equipment, is turned off with the adsorption tower A program-controlled valve being connected, absorber A pressure Power remains unchanged;Pressure process is 0.8MPa, realizes isolation (IS) step.
The product gas sequencing valve is opened, and so that product hydrogen is entered adsorption tower A from tower top and is finally boosted, works as adsorption tower When A pressure is substantially near adsorptive pressure, which terminates, and closes corresponding sequencing valve.Pressure process is risen to by 0.8Mpa 1.6MPa realizes final boosting (FR) step.
So far, all steps of adsorption tower A in one cycle, which are performed both by, finishes, and initially enters and recycle next time, Step performed by its five adsorption tower is identical as adsorption tower A, only mutually staggers in time, to guarantee adsorption separation process It is carried out continuously.
The utility model the utility model has the advantages that this equipment based on 5 tower process, is different from traditional 6 towers or 8 tower process, with Less adsorption tower realizes 99.99% or more product hydrogen purity, since the cycle of operation accelerates, reduces one to three tower, if Standby investment tails off, and occupied area becomes smaller, with the obvious advantage, can be effectively reduced the investment and operating cost of enterprise.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of five tower pressure swing adsorption hydrogen production device of the utility model-one kind;
Wherein, 1, adsorption tower A, 2, adsorption tower B, 3, adsorption tower C, 4, adsorption tower D, 5, adsorption tower E, 6, unstripped gas buffering Tank, 7, stripping gas surge tank, 8, product gas surge tank.
Specific embodiment
As shown in Figure 1, a kind of five tower pressure swing adsorption hydrogen production devices, including adsorption tower A1, adsorption tower B2, adsorption tower C3, suction Attached tower D4, adsorption tower E5, unstripped gas surge tank 6, product gas surge tank 8, stripping gas surge tank 7, adsorption tower are program-controlled with 6 respectively Valve is connected, and adsorption column inlet connects 2, and adsorption column outlet connects 4, and adsorption tower mutually staggers in proceedings, each suction Attached column overhead is connect with product gas surge tank, and each adsorption tower tower bottom is connect with stripping gas surge tank.According to these devices, The utility model pressure-variable adsorption process uses 5-1-3/P technique, i.e. pressure swing adsorption system has 5 adsorption towers, 1 is carved with when each Adsorption tower is adsorbed, and each adsorption tower is completed 3 times in a cycle and pressed, and when adsorbent adsorbs close saturation, is passed through The mode that (P) is rinsed in decompression regenerates adsorbent.Each adsorption tower recycles experience absorption (A), first order pressure each time Power equilibrium drop (E1D), the second stage pressure equilibrium drop (E2D), along put (PP), third stage pressure equilibrium drop (E3D), inversely bleed off pressure (D), flushing (P), third stage pressure equilibrium liter (E3R), the second stage pressure equilibrium liter (E2R), isolation (IS), the first stage pressure are equal Weighing apparatus rises (E1R), final boosting (FR) 12 steps, and 5 adsorption towers mutually stagger in proceedings, to guarantee that unstripped gas is continuous It outputs and inputs.Reasonable time can be selected in operation according to actual needs.
Firstly, unstripped gas dissociated methanol gas, contains H2About 73-74%, remaining is CO2, CO, a small amount of moisture, the complete first of unreacted Alcohol etc. is passed through unstripped gas surge tank 6, enters adsorption tower A1 by bottom sequencing valve under 1.6MPa pressure, and easy adsorbent component is inhaled It is attached on the sorbent, product hydrogen is delivered to out-of-bounds through top sequencing valve.When the close saturation of the adsorption capacity of adsorbent, absorption Step terminates, and closes charging and product sequencing valve, pressure process 1.6MPa.
In next step, adsorption tower C3 is flowed by tower top sequencing valve into the gas in adsorption tower A1 and carries out pressure equilibrium, when When two adsorption column pressures are of substantially equal, one down step terminates, and closes tower top sequencing valve, and pressure process is dropped to by 1.6MPa 0.8MPa。
In next step, adsorption tower D4 is flowed by tower top sequencing valve into the gas in adsorption tower A1 and carries out pressure equilibrium, when When two adsorption column pressures are of substantially equal, two down (E2D) step terminates, and pressure process drops to 0.4MPa by 0.8MPa.
In next step, entered at the top of adsorption tower E5 into gas in adsorption tower A1 by tower top sequencing valve, to adsorption tower E5 It is rinsed, rinses gas and be delivered to out-of-bounds through bottom sequencing valve, it is suitable to put (PP) when the adsorbent reactivation in adsorption tower E5 is complete Step terminates in step, closes corresponding sequencing valve, and pressure process drops to 0.3MPa by 0.4MPa.
In next step, adsorption tower E5 is flowed by tower top sequencing valve into the gas in adsorption tower A1 and carries out pressure equilibrium, when When two adsorption column pressures are of substantially equal, three drop (E3D) steps terminate, and pressure process drops to 0.15MPa by 0.3MPa.
In next step, it into remaining gas in adsorption tower A1, is inversely bled off pressure by bottom sequencing valve and is discharged into stripping gas buffering Tank 7, and guarantee stripping gas surge tank 7 can constantly stable output out-of-bounds, when adsorption tower A1 pressure is close to normal pressure, inverse put (D) Step terminates, and pressure process drops to 0.01MPa by 0.15MPa.
In next step, adsorption tower A1 is flowed by top sequencing valve into the gas in adsorption tower B2, in adsorption tower A1 Adsorbent is rinsed regeneration, rinses gas and is delivered to out-of-bounds through bottom sequencing valve, when the adsorbent reactivation in adsorption tower A1 is complete When, which terminates, pressure process 0.01MPa, realizes and rinses (P) step.
In next step, adsorption tower A1 is flowed by tower top sequencing valve into the gas in adsorption tower B2 and carries out pressure equilibrium, when When two adsorption column pressures are of substantially equal, three, which rise (E3R) step, terminates, and pressure process rises to 0.15MPa by 0.01MPa.
In next step, adsorption tower A1 is entered by tower top sequencing valve into gas in adsorption tower C3, carries out pressure equilibrium, works as suction Attached tower A1 and when of substantially equal adsorption tower C3 pressure, two, which rise (E2R) steps, terminates, and closes tower top sequencing valve, pressure process by 0.15Mpa rises to 0.4MPa.In next step, adsorption tower A1 is flowed by tower top sequencing valve into gas in adsorption tower D4, carried out Pressure is balanced, and when two pressure towers are of substantially equal, one, which rises (E1R) step, terminates, and pressure process is risen to by 0.4Mpa 0.8MPa。
In next step, adsorption tower A1 is temporarily isolating with other equipment, is turned off with the adsorption tower A1 program-controlled valve being connected, absorption Device A1 pressure remains unchanged, and realizes isolated operation, pressure process 0.8MPa.
Product gas sequencing valve is finally opened, so that product hydrogen is entered adsorption tower A1 from tower top and is finally boosted, work as absorption When tower A1 pressure is substantially near adsorptive pressure, which terminates, and closes corresponding sequencing valve.Pressure process is risen to by 0.8Mpa 1.6MPa realizes final boosting (FR) step.
So far, all steps of adsorption tower A1 in one cycle, which are performed both by, finishes, and initially enters and recycle next time, Step performed by its five adsorption tower is identical as adsorption tower A1, only mutually staggers in time, to guarantee adsorbing separation mistake Journey is carried out continuously.
After unstripped gas enters pressure swing adsorption system, from bottom to top, the adsorption tower of adsorbed state is in by 1, by adsorbing Adsorbent in tower carries out selective absorption, strong adsorbent component CO therein to it2, CO, H2O etc. is adsorbed by adsorbent, weak suction Attached component H2It is flowed out as product gas from adsorption tower top, obtains H of the purity 99.99%2.This system operating pressure is 1.6MPa。
So far, it is completed from dissociated methanol gas purifying hydrogen of hydrogen.
1 pressure-variable adsorption program of table runs time-scale 5-1-3/P working sequence and operating condition

Claims (4)

1. a kind of five tower pressure swing adsorption hydrogen production devices, characterized in that including unstripped gas surge tank, adsorption tower A, adsorption tower B, absorption Tower C, adsorption tower D, adsorption tower E, product gas surge tank and stripping gas surge tank, five adsorption towers are connected with 6 sequencing valves respectively It connects, every adsorption column inlet connects 2 sequencing valves, and every adsorption column outlet connects 4 sequencing valves;Each absorption column overhead with The connection of product gas surge tank, each adsorption tower tower bottom are connect with stripping gas surge tank.
2. a kind of five towers pressure swing adsorption hydrogen production device according to claim 1, characterized in that the adsorption tower A, adsorption tower B, adsorption tower C, adsorption tower D and adsorption tower E pass through sequencing valve between any two and connect.
3. a kind of five towers pressure swing adsorption hydrogen production device according to claim 1, characterized in that the adsorption tower A, attached tower B, Adsorption tower C, adsorption tower D and adsorption tower E connect product gas surge tank by tower top sequencing valve.
4. a kind of five towers pressure swing adsorption hydrogen production device according to claim 1, characterized in that the adsorption tower A, attached tower B, Adsorption tower C, adsorption tower D and adsorption tower E connect stripping gas surge tank by tower bottom sequencing valve.
CN201821779089.6U 2018-10-31 2018-10-31 A kind of five tower pressure swing adsorption hydrogen production devices Active CN209005511U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
CN112892153B (en) * 2021-01-22 2022-03-04 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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Address after: Room 2306-2307, block a, advanced ceramic Innovation Park, No. 125, Liuquan Road, high tech Zone, Zibo City, Shandong Province

Patentee after: Shandong Jinzhi Environmental Protection Technology Co., Ltd

Address before: 255086 Room 2306-2307, Block A, Advanced Ceramic Innovation Park, 125 Liuquan Road, Zhangdian District, Zibo City, Shandong Province

Patentee before: SHANDONG YETIAN ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd.

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