CN203820447U - Device for regenerating binary carrier used for pretreatment in coke oven gas PSA (pressure swing adsorption) hydrogen production - Google Patents
Device for regenerating binary carrier used for pretreatment in coke oven gas PSA (pressure swing adsorption) hydrogen production Download PDFInfo
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- CN203820447U CN203820447U CN201420069738.9U CN201420069738U CN203820447U CN 203820447 U CN203820447 U CN 203820447U CN 201420069738 U CN201420069738 U CN 201420069738U CN 203820447 U CN203820447 U CN 203820447U
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Abstract
The utility model provides a device for regenerating a binary carrier used for pretreatment in coke oven gas PSA (pressure swing adsorption) hydrogen production, belongs to coke oven gas refining and coke oven gas PSA hydrogen production and in particular relates to a coke oven gas PSA hydrogen production device. The device for regenerating the binary carrier used for the pretreatment in the coke oven gas PSA hydrogen production is characterized in that a three-way joint is arranged on a pipeline between a pressure regulating valve as well as a hot blowing control valve F3 and a cold blowing control valve F4 which are connected in parallel, one end of a nitrogen regenerating branch circuit provided with a check valve is connected with the three-way joint, the other end of the nitrogen regenerating branch circuit is connected with a nitrogen source; a three-way joint is arranged on a desorbed gas output pipe b of a pretreatment unit and is respectively connected with an isolating valve F5 and a new independent air outlet pipe as well as an isolating valve F6 and a discharge pipe, so that a double discharging and recycling channel for the desorbed gas of the pretreatment unit is formed. The device for regenerating the binary carrier used for the pre-treatment in the coke oven gas PSA hydrogen production has the advantages that back flushing regeneration can be effectively carried out on a regeneration tower by adopting nitrogen with high cleanliness, adsorption capacity of the pre-treatment unit is improved, content of impurities in coke oven gas entering a hydrogen extraction unit is reduced, and permanent damage of an adsorbent of the hydrogen extraction unit is avoided; a pretreatment regenerating device double carrier channel can be conveniently switched according to the actual production, and non-interference during production is realized.
Description
Technical field
The utility model belongs to that coke-oven gas is refining, coke-oven gas PSA hydrogen manufacturing, relates in particular to coke-oven gas PSA device for producing hydrogen.
Background technology
Current, coke-oven gas (Coke-Oven Gas is called for short COG) its pretreatment unit regenerating unit of PSA device for producing hydrogen connects to form by putting forward hydrogen unit stripping gas branch road, pretreatment unit and pre-treatment regeneration branch.Carry hydrogen unit stripping gas output tube a is connected to pretreatment unit ingress by stripping gas surge tank, pressure regulator valve F2, pipe connecting, hot blow control valve F3, cold blowing control valve F4, well heater, will carry hydrogen unit stripping gas input pretreatment unit and make regeneration source of the gas; Carry hydrogen unit stripping gas output tube a respectively with carry hydrogen unit, stripping gas surge tank, pressure regulator valve F1 and vent pipe and be connected, while being pretreatment unit regeneration gap (rise, decompression), carry hydrogen unit stripping gas and arrange recovery approach outward.Pretreatment unit is established stripping gas output tube b and is connected with vent pipe.Take from the stripping gas of carrying hydrogen unit, through pre-treatment regeneration branch, pretreatment unit regenerator column is carried out to blowback, removing is attached to the impurity composition on pretreatment unit regenerator column sorbent material, then is discharged out-of-bounds and reclaimed by stripping gas output tube b, the vent pipe of pretreatment unit.When hot blow, stripping gas is drawn by carrying hydrogen unit, enter stripping gas surge tank, pressure regulator valve F2, pipe connecting, hot blow control valve F3 and well heater, carry out blowback from top to pretreatment unit regenerator column, and then discharge out-of-bounds and reclaim by stripping gas output tube b, vent pipe.When cold blowing, stripping gas is drawn by carrying hydrogen unit, enters stripping gas surge tank, pressure regulator valve F2, pipe connecting and cold blowing control valve F4, carries out blowback from top to pretreatment unit regenerator column, reduce regenerator column adsorbent temperature, and then discharge out-of-bounds and reclaim by stripping gas output tube b, vent pipe.The defect existing is in PSA device for producing hydrogen production process, because the COG impurity composition from out-of-bounds exceeds standard, cause pretreatment unit bed to penetrate that (sorbent material absorption is saturated, defective COG is through adsorption bed), after the compressed unit II of COG, the III section that impurity exceeds standard compressed, the foreign matter content rising several times of unit volume, saturated separating out, easily cause cooling core, blow-off pipe, the safety valve root pipe of compressed element II, III section, and propose inlet filter, pipeline, the obstruction of pressure unit conduit of hydrogen unit, entering the COG impurity of carrying hydrogen unit exceeds standard, its stripping gas is also also enrichment impurity of pretreatment unit regeneration source of the gas, make the regeneration of pretreatment unit regenerator column simultaneously also at absorption impurity, reduce this tower and proceeded to the loading capacity after absorption, receive the ability of COG impurity more weak, so enter vicious cycle, until pretreatment unit does not have cleaning action, more seriously permanent damage is put forward hydrogen unit costliness, design and the sorbent material (15 year) of device with the life-span, shorten its work-ing life, increase replacement charge or reduce raw hydrogen purity, production capacity, affect continuous production, threaten safety in production.
Utility model content
The defect existing in order to overcome prior art, the purpose of this utility model is to provide the two carrier regenerating units of a kind of coke-oven gas PSA hydrogen manufacturing pre-treatment, optimize hydrogen production process control, improve the adsorptive power of pretreatment unit, reduce and enter the COG foreign matter content of carrying hydrogen unit, improve pretreatment unit regeneration effect, avoiding carrying hydrogen unit sorbent material permanent damage even scraps, stable productivity and raw hydrogen purity, reduce production costs, and ensures to produce to carry out smoothly.
Coke-oven gas PSA device for producing hydrogen, comprises compressed element I section, pretreatment unit, compressed element II, III section, carries hydrogen unit and deoxidation drying unit, and compressed element I section connects supply station by COG input tube, carries hydrogen unit and connects deoxidation drying unit by output tube.Carry between hydrogen unit and pretreatment unit arranging and form pretreatment unit utilization by stripping gas output tube a, stripping gas surge tank, pressure regulator valve F2 the hot blow control valve F3 connecing and cold blowing control valve F4, well heater and pipe connecting and put forward hydrogen unit stripping gas regeneration branch; Stripping gas output tube a with carry hydrogen unit and be connected, be connected with pressure regulator valve F1, vent pipe, passage is arranged in composition pretreatment unit regeneration gap Shi Tiqing unit desorb outward; Pretreatment unit is established stripping gas output tube b and is connected with vent pipe, be characterized in pressure regulator valve F2 and and the hot blow control valve F3, the cold blowing control valve F4 that connect between pipeline on establish threeway, the nitrogen regeneration branch road one end that is provided with vacuum breaker is connected with threeway, the other end is connected with source nitrogen, nitrogen is introduced to pretreatment unit regenerator column is carried out to blowback, realize pretreatment unit utilization and put forward hydrogen unit stripping gas and the two carrier manipulation of regeneration of nitrogen; The stripping gas output tube b of described pretreatment unit establishes threeway, is connected respectively with shutdown valve F5 and newly-built independent escape pipe, is connected with shutdown valve F6 and vent pipe, forms the two outer row's recovery approaches of pretreatment unit stripping gas.
The utility model further improves, the inlet pipe of described nitrogen regeneration branch road establish successively reducing valve group, flow control valve group, under meter and vacuum breaker be connected to stripping gas branch road pressure regulator valve F2 and and the hot blow control valve F3, the cold blowing control valve F4 that connect between threeway on, by reducing valve, the pressure of supplying nitrogen is controlled, flow control valve group and under meter are controlled the input of nitrogen, and vacuum breaker effectively prevents that stripping gas from refunding nitrogen pipeline.
The utility model further improves, and on described independent escape pipe, establishes shutdown valve F5, and escape pipe one end connects the threeway of stripping gas output tube b, the other end with out-of-bounds communicate, the tail gas during by nitrogen regeneration is discharged out-of-bounds and is reclaimed, the impurity in removing regenerator column.
When work, first open shutdown valve F5, close shutdown valve F6, pressure regulator valve F2 changes manual control, complete shut-down, after adjustment pressure regulator valve F1 control pressure, drops into automatically; The stripping gas of carrying hydrogen unit enters through B point after being drawn by A point and puies forward the air-breathing surge tank buffering of hydrogenolysis, stores, then adjusts balanced being sent to outside battery limit (BL) and reclaiming through I point by pressure regulator valve F1; Setting nitrogen flow variable valve group flow drops into automatically, slowly open reducing valve group, adjust secondary pressure, nitrogen is through reducing valve group, flow control valve group, under meter, vacuum breaker, C, D, F3(F4), E, F be for the regenerator column hot blow (cold blowing) of pretreatment unit, nitrogen regeneration tail gas is discharged out-of-bounds and is reclaimed through G, H, F5, independent escape pipe; If COG quality takes a turn for the better, pretreatment unit is used instead and is proposed the stripping gas regeneration of hydrogen unit, only need reset F1, F2 control pressure, drops into automatically, then closes nitrogen reducing valve group and can get back to former flow process.
Compared with prior art, advantage is novel, simple and reasonable for structure; Adopt nitrogen as regeneration source of the gas, cost is low, security is good, and pretreatment unit sorbent material can not produce local spontaneous combustion by Yin Gaowen under hot blow state, and the nitrogen that cleanliness factor is high can carry out pulse cleaning to regenerator column effectively, improve the adsorptive power of pretreatment unit, reduce and enter the COG foreign matter content of carrying hydrogen unit, avoid carrying hydrogen unit sorbent material permanent damage and even scrap, stable productivity and raw hydrogen purity, reduce production costs, ensure to produce and carry out smoothly; The two carrier passages of pre-treatment regenerating unit can, according to producing actual convenient switching, not interfere with each other when production; The tail gas producing when pretreatment unit nitrogen regeneration all reclaims, environmentally safe.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the coke-oven gas PSA device for producing hydrogen general flow chart with nitrogen regeneration branch road.
In figure: 1-COG input tube, 2-compressed element I section, 3-pretreatment unit, 4-compressed element II, III section, 5-carries hydrogen unit, 6-output tube, 7-escape pipe, 8-shutdown valve F5, 9-stripping gas output tube b, 10-shutdown valve F6, 11-well heater, 12-hot blow control valve F3, 13-pipe connecting, 14-pressure regulator valve F2, 15-stripping gas surge tank, 16-stripping gas output tube a, 17-pressure regulator valve F1, 18-cold blowing control valve F4, 19-vacuum breaker, 20-under meter, 21-flow control valve group, 22-vent pipe, 23-reducing valve group, 24-inlet pipe.
Embodiment
Below in conjunction with embodiment, the utility model will be further described.
As seen from Figure 1, the two carrier regenerating units of coke-oven gas PSA hydrogen manufacturing pre-treatment, comprise compressed element I section 2, pretreatment unit 3, compressed element II, III section 4 and carry hydrogen unit 5.Compressed element I section connects supply station (not marking in figure) by COG input tube 1, carry hydrogen unit and connect deoxidation drying unit (not marking in figure) by output tube 6, carry between hydrogen unit 5 and pretreatment unit 3 arranging and form pretreatment unit 3 by stripping gas output tube a16, stripping gas surge tank 15, pressure regulator valve F214 the hot blow control valve F312 connecing and cold blowing control valve F4 18, well heater 11 and pipe connecting 13 and utilize and put forward hydrogen unit 5 stripping gas regeneration branch; Stripping gas output tube a with carry hydrogen unit 5 and be connected, be connected with pressure regulator valve F117, vent pipe 22, recovery approach is arranged in composition pretreatment unit regeneration gap Shi Tiqing unit desorb outward; Pretreatment unit 3 is established stripping gas output tube b9 and is connected with vent pipe 22.Between the pressure regulator valve F2 14 of stripping gas regeneration branch and hot blow control valve F3 12 the cold blowing control valve F4 18 that connects, on pipeline, establish threeway, the nitrogen regeneration branch road one end that is provided with vacuum breaker 19 is connected with threeway, the other end is connected with source nitrogen, nitrogen can be introduced to pretreatment unit 3 regenerator column is carried out to blowback, realize pretreatment unit 3 utilizations and propose hydrogen unit 5 stripping gass and the two carriers regeneration of nitrogen; The stripping gas output tube b of pretreatment unit 3 establishes threeway, is connected respectively with shutdown valve F58 and independent escape pipe 7, is connected with shutdown valve F6 10 and vent pipe 22, forms the two outer row's recovery approaches of stripping gas.
The inlet pipe 24 of nitrogen regeneration branch road establish successively reducing valve group 23, flow control valve group 21, under meter 20 and vacuum breaker 19 be connected to stripping gas branch road pressure regulator valve F214 and and the hot blow control valve F3 12, the cold blowing control valve F4 18 that connect between threeway on, by reducing valve 23, the pressure of supplying nitrogen is controlled, flow control valve group 21 and under meter 20 are controlled the input of nitrogen, and vacuum breaker effectively prevents that stripping gas from refunding nitrogen pipeline.
On independent escape pipe 7, establish shutdown valve F5 8, escape pipe one end connects the threeway of stripping gas output tube b9, the other end with out-of-bounds communicate, nitrogen regeneration tail gas is discharged out-of-bounds and is reclaimed, the impurity in removing regenerator column.
When work, first open shutdown valve F5, close shutdown valve F6, pressure regulator valve F2 changes manual control, complete shut-down, after adjustment pressure regulator valve F1 control pressure, drops into automatically; The stripping gas of carrying hydrogen unit enters through B point after being drawn by A point and puies forward the air-breathing surge tank buffering of hydrogenolysis, stores, then adjusts balanced being sent to outside battery limit (BL) and reclaiming through I point by pressure regulator valve F1; Setting flow control valve group flow drops into automatically, slowly open reducing valve group, adjust secondary pressure, nitrogen is through reducing valve group, flow control valve group, under meter, vacuum breaker, C, D, F3(F4), E, F be for the regenerator column hot blow (cold blowing) of pretreatment unit, nitrogen regeneration tail gas is discharged out-of-bounds and is reclaimed through G, H, F5, independent escape pipe; If COG quality takes a turn for the better, pretreatment unit is used instead and is proposed the stripping gas regeneration of hydrogen unit, only need reset F1, F2 control pressure, drops into automatically, then closes reducing valve group and can get back to former flow process.
Claims (3)
1. the two carrier regenerating units of coke-oven gas PSA hydrogen manufacturing pre-treatment, comprise compressed element I section (2), pretreatment unit (3), compressed element II, III section (4) and carry hydrogen unit (5); Compressed element I section connects supply station by COG input tube (1), carries hydrogen unit and connects deoxidation drying unit by output tube (6); Carry between hydrogen unit (5) and pretreatment unit (3) and to arrange by stripping gas output tube a(16), stripping gas surge tank (15), pressure regulator valve F2(14) and the hot blow control valve F3(12 that connects) and cold blowing control valve F4(18), well heater (11) and pipe connecting (13) form pretreatment unit (3) utilization and put forward hydrogen unit (5) stripping gas regeneration branch; Stripping gas output tube a(16) with carry hydrogen unit (5) and be connected, with pressure regulator valve F1(17), vent pipe (22) is connected, recovery approach is arranged in composition Shi Tiqing unit, pre-treatment (3) regeneration unit gap (5) desorb outward; Pretreatment unit is established stripping gas output tube b(9) be connected with vent pipe, it is characterized in that described stripping gas regeneration branch pressure regulator valve F2 and and the hot blow control valve F3, the cold blowing control valve F4 that connect between pipeline on establish threeway, the nitrogen regeneration branch road one end that is provided with vacuum breaker (19) is connected with threeway, and the other end is connected with source nitrogen; The stripping gas output tube b of described pretreatment unit (3) establishes threeway, respectively with shutdown valve F5(8) and independent escape pipe (7) be connected, with shutdown valve F6(10) and vent pipe be connected, form the two outer row of stripping gas recovery approaches.
2. the two carrier regenerating units of coke-oven gas PSA hydrogen manufacturing pre-treatment according to claim 1, the inlet pipe (24) that it is characterized in that described nitrogen regeneration branch road is established reducing valve group (23), flow control valve group (21), under meter (20) and vacuum breaker (19) and is connected to the pressure regulator valve F2(14 of stripping gas branch road successively) and and the hot blow control valve F3(12 that connects), cold blowing control valve F4(18) between threeway on.
3. the two carrier regenerating units of coke-oven gas PSA hydrogen manufacturing pre-treatment according to claim 1, it is characterized in that establishing shutdown valve F5(8 on described independent escape pipe (7)), escape pipe one end connects stripping gas output tube b(9) threeway, the other end with out-of-bounds communicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420069738.9U CN203820447U (en) | 2014-02-18 | 2014-02-18 | Device for regenerating binary carrier used for pretreatment in coke oven gas PSA (pressure swing adsorption) hydrogen production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420069738.9U CN203820447U (en) | 2014-02-18 | 2014-02-18 | Device for regenerating binary carrier used for pretreatment in coke oven gas PSA (pressure swing adsorption) hydrogen production |
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| Publication Number | Publication Date |
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| CN203820447U true CN203820447U (en) | 2014-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420069738.9U Expired - Fee Related CN203820447U (en) | 2014-02-18 | 2014-02-18 | Device for regenerating binary carrier used for pretreatment in coke oven gas PSA (pressure swing adsorption) hydrogen production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103754822B (en) * | 2014-02-18 | 2017-01-25 | 马钢(集团)控股有限公司 | Pretreatment double-carrier regeneration device for coke-oven gas PSA (Pressure Swing Adsorption) hydrogen generation |
-
2014
- 2014-02-18 CN CN201420069738.9U patent/CN203820447U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103754822B (en) * | 2014-02-18 | 2017-01-25 | 马钢(集团)控股有限公司 | Pretreatment double-carrier regeneration device for coke-oven gas PSA (Pressure Swing Adsorption) hydrogen generation |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20170218 |