CN1868989A - Variable-pressure adsorption decarburization technology of produing monoalcohol and its device - Google Patents
Variable-pressure adsorption decarburization technology of produing monoalcohol and its device Download PDFInfo
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- CN1868989A CN1868989A CN 200610026229 CN200610026229A CN1868989A CN 1868989 A CN1868989 A CN 1868989A CN 200610026229 CN200610026229 CN 200610026229 CN 200610026229 A CN200610026229 A CN 200610026229A CN 1868989 A CN1868989 A CN 1868989A
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Abstract
A variable-pressure adsorption decarbonizing process for preparing monoalcohol features that the raw gas flows through the parallel adsorption towers and the CO2 gas in said raw gas is adsorbed by the adsorbent in said adsorption towers to obtain gas product. Its each cycle includes such steps as adsorption, lowering pressure, gas relieving, using the relieved gas to flush adsorption tower, vacuumizing, boosting and pressurizing.
Description
Technical field
The present invention relates to a kind of gas separating technology and device, particularly a kind of special pressure varying adsorption decarburization process and device at manufacture order alcohol.
Background technology
The desorption mode of the sorbent material of the pressure swing adsorption decarbonization device of manufacture order alcohol mainly contains at present: wash and vacuumize.The shortcoming of flushing flow process is that product gas is used for the bed flushing, and the available gas loss of system is very big.The shortcoming that vacuumizes flow process is: the power consumption height.
Now that two kinds of technical process brief introductions of transformation absorption are as follows:
One, developing technique flow process is referring to Fig. 1
The explanation of valve numbering: 1# is raw material gas inlet valve (A1, B1, C1......)
2# is product gas outlet valve (A2, B2, C2......)
3# is purge gas outlet valve (A3, B3, C3......)
4# is for all compressing into outlet valve (A4, B4, C4......)
5# is whole inflation valve (A5, B5, C5......)
6# is the outlet valve of dropping a hint (A6, B6, C6......)
7# is purge gas inlet valve (A7, B7, C7......)
Circulation of this technical process comprises: absorption, step-down, emptying, wash, boost, process such as last pressurising.1. unstripped gas enters adsorption tower by the 1# valve, and the product gas that foreign gas is adsorbed after the agent absorption flows out adsorption tower by 2 valves, enters next workshop section; 2. when index in the product gas surpassed productive capacity, adsorption process finished, and by the 4# valve high pressure gas in the tower adsorption tower is transferred to other adsorption tower that need boost (this process claims step-down); 3. after the step-down process is finished, also be higher than normal pressure in the adsorption tower, by the 6# valve with the gaseous emission in the adsorption tower adsorption tower in atmosphere; 4. emptying finishes, and opens the 7# valve, and other tower inner high voltage gas is introduced in the adsorption tower, and purge gas enters atmosphere by the 3# valve; 5. after the foreign gas desorb in the absorption sorbent material finishes, the high pressure gas in other adsorption tower are transferred to (this process claims to boost) in the adsorption tower by the 4# valve; 6. only the pressure in the adsorption tower can not be brought up to adsorptive pressure by the pressure transfer in the adsorption tower, by the 5# valve product cyclostrophic is moved on in the adsorption tower, allow the interior pressure of adsorption tower reach adsorptive pressure (this process claims last pressurising), after last pressurising finished, this adsorption tower entered next sorption cycle.
This flow process also has clean gas flushing bed because portion gas emptying is arranged, and causes the available gas loss of device.
Two, evacuation process flow process is referring to Fig. 2
Valve numbering explanation among the figure: 1# is raw material gas inlet valve (A1, B1, C1......)
2# is product gas outlet valve (A2, B2, C2......)
3# is for vacuumizing inlet valve (A3, B3, C3......)
4# is for all compressing into outlet valve (A4, B4, C4......)
5# is whole inflation valve (A5, B5, C5......)
6# is the outlet valve of dropping a hint (A6, B6, C6......)
Circulation of this technical process comprises: absorption, step-down, emptying, vacuumize, boost, processes such as forward pressurising, last pressurising.1. unstripped gas enters adsorption tower by the 1# valve, and the product gas that foreign gas is adsorbed after the agent absorption flows out adsorption tower by 2 valves, enters next workshop section (this process claims absorption); 2. when index in the product gas surpassed productive capacity, adsorption process finished, and by the 4# valve high pressure gas in the tower adsorption tower is transferred to other adsorption tower that need boost (this process claims step-down); 3. after the step-down process is finished, also be higher than normal pressure in the adsorption tower, with compressor the gas in the adsorption tower entered atmosphere (this process claims emptying) by the 6# valve; 4. emptying finishes, and adsorption tower is vacuumized with vacuum pump by the 3# valve, allows be adsorbed in foreign gas desorb (this process claims to vacuumize) in the sorbent material; 5. after the foreign gas desorb in the absorption sorbent material finishes, the high pressure gas in other adsorption tower are transferred to (this process claims to boost) in the adsorption tower by the 4# valve; 6. only by boosting, system does not also reach adsorptive pressure, by the 5# valve product cyclostrophic is moved on to the pressure that allows in the adsorption tower in the adsorption tower again and reaches adsorptive pressure (this process claims last pressurising), and after last pressurising finished, this adsorption tower entered next sorption cycle.
This flow process is because the impurity component in the sorbent material all is by the vacuum pump desorb, so energy consumption is higher.
Summary of the invention
The object of the present invention is to provide a kind of improved pressure swing adsorption technique and device, overcome the problem that exists in the prior art, effectively reduce power consumption.
To achieve the above object of the invention, design of the present invention is: in the technical process of the present invention, in vacuum, hydrogen production device is carried in supporting transformation absorption during earlier with manufacture order alcohol drop a hint (partly or entirely) is incorporated in the adsorption tower of this technology, allow dropping a hint of pressure-swing absorption apparatus wash this technology adsorption tower, impurity composition in it is partly desorbed, vacuumize by vacuum pump again, allow the complete desorb of sorbent material.Thereby reduction power consumption.
According to the foregoing invention design, the present invention adopts following technical proposals:
A kind of special pressure varying adsorption decarburization process at manufacture order alcohol, adopt adsorption tower arranged side by side, the adsorbents adsorb of foreign gas in the unstripped gas in adsorption tower removed, thereby obtain product gas, each circulation of its technical process comprises absorption, step-down, emptying, vacuumize, boost and last pressurising process, supporting transformation absorption is carried in the adsorption tower that dropping a hint of hydrogen production device be incorporated into this technology when it is characterized in that in the described vacuum earlier with manufacture order alcohol, allow dropping a hint of pressure-swing absorption apparatus wash this technology adsorption tower, impurity composition in it is partly desorbed, vacuumize by vacuum pump again, allow the complete desorb of sorbent material.
In above-mentioned pressure swing adsorption technique, described adsorption process is: unstripped gas is introduced adsorption tower from the adsorption tower bottom, and the product gas that foreign gas is adsorbed after the agent absorption is drawn from the adsorption tower top; Described step-down process is: when index in the product gas surpasses productive capacity, the high pressure gas in the adsorption tower are transferred to the adsorption tower that need boost by all compressing into outlet valve (A4, B4, C4......); Described emptying process is: after the step-down process was finished, the adsorption tower internal gas pressure also was higher than normal pressure, by the outlet valve of dropping a hint (A6, B6, C6......), from adsorption tower bottom emission gases; The described process of boosting is: after vacuum, will need the gas of the adsorption tower of step-down to transfer to this adsorption tower by all compressing into outlet valve (A4, B4, C4......); Described last pressurising process is: behind the lifting process, (A5, B5, C5......) moves on to the product cyclostrophic in this adsorption tower by whole inflation valve, makes its internal pressure reach adsorptive pressure.
The device that a kind of above-mentioned pressure swing adsorption technique is used, comprise adsorption tower arranged side by side, the unstripped gas pipeline is by raw material gas inlet valve (A1, B1, C1......) be communicated with the adsorption tower bottom, the product air pipe is by product gas outlet valve (A2, B2, C2......) be communicated with the adsorption tower top, there is vacuum pump to pass through vacuum pump inlet valve (A3, B3, C3......) bottom of connection adsorption tower, pressure-equalizing passageway is arranged by all compressing into outlet valve (A4, B4, C4......) top of connection adsorption tower, blowdown piping is arranged through the outlet valve (A6 that drops a hint, B6, C6......) bottom of connection adsorption tower, the product air pipe is arranged by whole inflation valve (A5, B5, C5......) top of connection adsorption tower,, have a company to carry hydrogen and drop a hint pipeline by carrying hydrogen emptying gas port valve (A7, B7, C7......) enter in the adsorption tower.
Above-mentioned pressure-swing absorption apparatus, the adsorption tower of installing has 4～20 side by side.(referring to Fig. 3)
The present invention compared with prior art, have following conspicuous outstanding substantive distinguishing features and remarkable advantage: introduce in the technology of the present invention and carry hydrogen and drop a hint, impel the foreign gas part desorb of its absorption, alleviated the load of vacuum pump, also avoided losing available gas with the product gas flushing in the prior art, reduce power consumption, reduced product cost.
Valve numbering explanation among Fig. 3:
1
#Be raw material gas inlet valve (being A1, B2, C3, the D4 among Fig. 3)
2
#Be product gas outlet valve (being A2, B2, C2, the D2 among Fig. 3)
3
#Be vacuum pump inlet valve (being A3, B3, C3, the D3 among Fig. 3)
4
#For all compressing into outlet valve (being A4, B4, C4, the D4 of Fig. 3)
5
#Be whole inflation valve (being A5, B5, C5, the D5 among Fig. 3)
6
#Be the outlet valve of dropping a hint (being A6, B6, C6, the D6 among Fig. 3)
7
#For carrying the hydrogen inlet valve (being A7, B7, C7, the D7 among Fig. 3) of dropping a hint
Description of drawings
Fig. 1 is the pressure-swing absorption apparatus structural representation of the employing developing technique of prior art.
Fig. 2 is the pressure-swing absorption apparatus structural representation of the employing evacuation process of prior art.
Fig. 3 is a pressure-swing absorption apparatus structural representation of the present invention.
Embodiment
A preferred embodiment of the present invention is described below: referring to Fig. 3.
Each circulation of the pressure swing adsorption technique of present embodiment is as follows: 1. adsorption process: unstripped gas enters adsorption tower by raw material gas inlet valve A1, B1, C1......, and the product gas that foreign gas is adsorbed after the agent absorption flows out adsorption tower by product gas outlet valve A2, B2, C2......; 2. step-down process: when index in the product gas surpassed productive capacity, adsorption process finished, and the high pressure gas of adsorption tower is transferred to the adsorption tower that need boost by all compressing into outlet valve A4, B4, C4......; 3. emptying process: after the step-down process was finished, the adsorption tower internal gas pressure also was higher than normal pressure, was pumped in the atmosphere by drop a hint outlet valve A6, B6, C6......; 4. vacuum: the emptying process finishes, by vacuumize inlet valve A3, B3, C3...... vacuumizes adsorption tower with vacuum pump, allow be adsorbed in foreign gas desorb in the sorbent material, will carry drop a hint inlet valve A7, B7, C7..... of hydrogen simultaneously and open, allow and carry hydrogen and drop a hint and enter in the absorption; 5. the process of boosting: after the foreign gas desorb in the sorbent material finishes, by all compress into outlet valve A4, B4, C4...... will need the gas of the adsorption tower of step-down to transfer to this adsorption tower; 6. last pressurising process: after the process of boosting, the product cyclostrophic is moved on in this adsorption tower, make its internal pressure reach adsorptive pressure by whole inflation valve A5, B5, C5.......
The pressure-swing absorption apparatus of present embodiment, referring to Fig. 3, comprise 4～20 adsorption towers arranged side by side, the unstripped gas pipeline is by raw material gas inlet valve A1, B1, C1...... be communicated with the adsorption tower bottom, the product air pipe is by product gas outlet valve A2, B2, C2...... be communicated with the adsorption tower top, there is vacuum pump to pass through vacuum pump inlet valve A3, B3, C3...... the bottom that is communicated with adsorption tower, pressure-equalizing passageway is arranged by all compressing into outlet valve A4, B4, C4...... the top that is communicated with adsorption tower, blowdown piping is arranged through the outlet valve A6 that drops a hint, B6, C6...... the bottom that is communicated with adsorption tower, the product air pipe is arranged by whole inflation valve A5, B5, C5...... the top that is communicated with adsorption tower has a connection to carry pipeline that hydrogen drops a hint by carrying the hydrogen inlet valve A7 that drops a hint, B7, C7.......
Claims (4)
1. the pressure varying adsorption decarburization process of a manufacture order alcohol adopts adsorption tower arranged side by side, with the CO in the unstripped gas
2The adsorbents adsorb of gas in adsorption tower removes, thereby obtain product gas, each circulation of its technical process comprises absorption, step-down, emptying, vacuumizes, boosts and last pressurising process, it is characterized in that in the described vacuum, hydrogen production device is carried in supporting transformation absorption during earlier with manufacture order alcohol drop a hint (partly or entirely) is incorporated in the adsorption tower of this technology, allow dropping a hint of pressure-swing absorption apparatus wash this technology adsorption tower, impurity composition in it is partly desorbed, vacuumize by vacuum pump again, allow the complete desorb of sorbent material.
2. the pressure swing adsorption technique of manufacture order alcohol according to claim 1 is characterized in that described adsorption process is: unstripped gas is introduced adsorption tower, CO from the adsorption tower bottom
2The product gas that gas is adsorbed after the agent absorption is drawn from the adsorption tower top; Described step-down process is: when index in the product gas surpasses productive capacity, with the high pressure gas in the adsorption tower by all compress into outlet valve (A4, B4, C4 ...) transfer to the adsorption tower that need boost; Described emptying process is: after the step-down process was finished, the air pressure of gas also was higher than normal pressure in the adsorption tower, by the outlet valve of dropping a hint (A6, B6, C6 ...), from adsorption tower bottom emission gases; The described process of boosting is: after vacuum, by structure compress into outlet valve (A4, B4, C4 ...) will need the gas in the adsorption tower of step-down to transfer to this adsorption tower; Described last pressurising process is: behind the lifting process, by whole inflation valve (A5, B5, C5 ...) the product cyclostrophic is moved on in this adsorption tower, make its internal pressure reach adsorptive pressure.
3. the device that the pressure varying adsorption decarburization process of manufacture order alcohol according to claim 1 is used, comprise adsorption tower arranged side by side, the unstripped gas pipeline is by raw material gas inlet valve (A1, B1, C1, ...) be communicated with bottom the adsorption tower, the product air pipe is by product gas outlet valve (A2, B2, C2, ...) connection adsorption tower top, there is vacuum pump to pass through vacuum pump inlet valve (A3, B3, C3, ...) be communicated with the bottom of adsorption tower, pressure-equalizing passageway is arranged by all compressing into outlet valve (A4, B4, C4, ...) be communicated with the top of adsorption tower, blowdown piping is arranged through the outlet valve (A6 that drops a hint, B6, C6, ...) be communicated with the bottom of adsorption tower, the product air pipe is arranged by whole inflation valve ((A5, B5, C5, ...) be communicated with the top of adsorption tower, the pipeline of hydrogen production device blowdown piping is carried in supporting transformation absorption when it is characterized in that having one to be communicated with manufacture order alcohol, by carrying the hydrogen production device inlet valve (A7 that drops a hint, B7, C7, ...) be communicated with the top of adsorption tower.
4. the pressure swing adsorption decarbonization device of manufacture order alcohol according to claim 3 is characterized in that having 4～20 described adsorption towers and installs side by side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610026229 CN1868989A (en) | 2006-04-28 | 2006-04-28 | Variable-pressure adsorption decarburization technology of produing monoalcohol and its device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610026229 CN1868989A (en) | 2006-04-28 | 2006-04-28 | Variable-pressure adsorption decarburization technology of produing monoalcohol and its device |
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| CN1868989A true CN1868989A (en) | 2006-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200610026229 Pending CN1868989A (en) | 2006-04-28 | 2006-04-28 | Variable-pressure adsorption decarburization technology of produing monoalcohol and its device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587061A (en) * | 2017-01-10 | 2017-04-26 | 宁夏坤辉气化有限公司 | System for purifying carbon dioxide by utilizing air discharged in decarbonization |
| CN114487172A (en) * | 2022-01-10 | 2022-05-13 | 四川亚联高科技股份有限公司 | Gas adsorbent dynamic testing device |
-
2006
- 2006-04-28 CN CN 200610026229 patent/CN1868989A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587061A (en) * | 2017-01-10 | 2017-04-26 | 宁夏坤辉气化有限公司 | System for purifying carbon dioxide by utilizing air discharged in decarbonization |
| CN114487172A (en) * | 2022-01-10 | 2022-05-13 | 四川亚联高科技股份有限公司 | Gas adsorbent dynamic testing device |
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