CN110173960A - A kind of recycle device and technique of hydrogen-rich gas - Google Patents
A kind of recycle device and technique of hydrogen-rich gas Download PDFInfo
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- CN110173960A CN110173960A CN201910576615.1A CN201910576615A CN110173960A CN 110173960 A CN110173960 A CN 110173960A CN 201910576615 A CN201910576615 A CN 201910576615A CN 110173960 A CN110173960 A CN 110173960A
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- gas
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- hydrogen
- propylene
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- 239000007789 gas Substances 0.000 title claims abstract description 357
- 239000001257 hydrogen Substances 0.000 title claims abstract description 86
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 86
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title abstract description 14
- 238000005057 refrigeration Methods 0.000 claims abstract description 91
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims abstract description 88
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 239000003507 refrigerant Substances 0.000 claims abstract description 32
- 238000000926 separation method Methods 0.000 claims abstract description 24
- 238000001035 drying Methods 0.000 claims abstract description 22
- 239000002737 fuel gas Substances 0.000 claims abstract description 22
- 238000007781 pre-processing Methods 0.000 claims abstract description 4
- 238000005984 hydrogenation reaction Methods 0.000 claims description 63
- 239000002283 diesel fuel Substances 0.000 claims description 62
- 239000003502 gasoline Substances 0.000 claims description 40
- 230000004048 modification Effects 0.000 claims description 21
- 238000012986 modification Methods 0.000 claims description 21
- 238000006477 desulfuration reaction Methods 0.000 claims description 19
- 230000023556 desulfurization Effects 0.000 claims description 19
- 238000005194 fractionation Methods 0.000 claims description 17
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 14
- 235000009508 confectionery Nutrition 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 230000003139 buffering effect Effects 0.000 claims description 7
- 230000003009 desulfurizing effect Effects 0.000 claims description 7
- 229940031098 ethanolamine Drugs 0.000 claims description 7
- 239000002808 molecular sieve Substances 0.000 claims description 6
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000000994 depressogenic effect Effects 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- -1 hydrogen hydrocarbon Chemical class 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000002407 reforming Methods 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 150000002431 hydrogen Chemical class 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 1
- 238000007630 basic procedure Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/0228—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream
- F25J3/0252—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream characterised by the separated product stream separation of hydrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention discloses a kind of recycle device of hydrogen-rich gas and technique, device includes gas sweetening tower, unstripped gas surge tank, drying and dehydrating tower, feed gas compressor, cryogenic separation ice chest, refrigeration cycle supply system and pipeline；The cryogenic separation ice chest includes heat exchanger, knockout tower, main heat exchanger and gas-liquid separator；The refrigeration cycle supply system includes propylene tank, propylene compensator, propylene compressor, the first water cooler, the second cryogen storage tank, the second cryogen compensator, the second refrigerant compressor and the second water cooler；Its technique includes feed gas preprocessing, dehydration and pressurization, cryogenic separation and refrigeration cycle supply step.Hydrogen-rich gas is produced hydrogen, liquefied gas and fuel gas with low cost by the present invention, and hydrogen recovery rate and purity are all very high, is successfully realized the dual utilization of hydrogen resources and energy, has significant economic benefit and good environmental benefit.
Description
Technical field
The present invention relates to petrochemical industries, and in particular to a kind of recycle device and technique of hydrogen-rich gas.
Background technique
Reformation hydrogen PSA resolution gas, diesel oil hydrogenation modification sweet dry gas, gasoline hydrogenation fractionation tower overhead gas and stable tower overhead gas,
Low point of gas of diesel oil hydrofining and sour gas and gas holder gas are the hydrogen-rich gases of oil refining apparatus, dense containing higher hydrogen
Degree.Currently, these gas treatment measures and in such a way that technique mostly uses following two, first is that hydrogen-rich gas enters high pressure gas
Pipe network burns as the supplement of fuel, second is that hydrogen-rich gas, which enters low pressure gas system, directly carries out high-altitude torch combustion
Burn outlet.Such processing mode not only results in the dual waste of hydrogen resources and energy, can also cause to environment greatly
Pollution.
Summary of the invention
To overcome the shortcomings of existing technologies, the present invention a kind of hydrogen resources and the dual utilization of energy are provided, will not be to environment
The recycle device and technique of the hydrogen-rich gas of pollution.
Its technical solution is: a kind of recycle device of hydrogen-rich gas, including gas sweetening tower, unstripped gas surge tank,
Drying and dehydrating tower, feed gas compressor, cryogenic separation ice chest, refrigeration cycle supply system and pipeline；The cryogenic separation ice chest
Including heat exchanger, knockout tower, main heat exchanger and gas-liquid separator；The refrigeration cycle supply system includes the first refrigeration cycle
Mechanism and the second refrigeration cycle mechanism, the first refrigeration cycle mechanism include propylene tank, propylene compensator, propylene compressor and
One water cooler, the second refrigeration cycle mechanism include the second cryogen storage tank, the second cryogen compensator, the second refrigerant compressor and the
Two water coolers；The pipeline includes reforming hydrogen PSA to parse gas pipeline, diesel oil hydrogenation modification sweet dry gas pipeline, gasoline hydrogenation
It is fractionated tower overhead gas pipeline, gasoline hydrogenation stablizes tower overhead gas pipeline, the low gas-distributing pipe line of diesel oil hydrofining, diesel oil hydrofining acidity
Gas pipeline, gas holder gas pipeline, gas sweetening tower inlet manifold line, gas sweetening tower outlet line, unstripped gas buffering canister incoming gas are total
Feed-line, liquefied gas gathering line, Hydrogen collection pipeline, fuel gas gathering line, the first refrigeration cycle among pipeline, gas
Pipeline and the second refrigeration cycle pipeline；Gas sweetening tower inlet manifold's line is separately connected gasoline hydrogenation fractionation tower overhead gas pipe
Line, gasoline hydrogenation stablize tower overhead gas pipeline, the low gas-distributing pipe line of diesel oil hydrofining, diesel oil hydrofining acidity gas pipeline and gas holder
Gas pipeline；Unstripped gas surge tank inlet manifold's line, which is separately connected, reforms hydrogen PSA parsing gas pipeline, diesel oil hydrogenation modification desulfurization
Dry gas pipeline and gas sweetening tower outlet line；One end of feed-line connects unstripped gas surge tank outlet among the gas
End, the other end connect gas-liquid separator inlet end, and drying and dehydrating tower is sequentially connected in series on pipeline, feed gas compressor, heat exchanger, is divided
From tower and main heat exchanger；The first refrigeration cycle pipeline is by propylene tank, propylene compensator, propylene compressor and the first water cooling
But device is sequentially connected in series, while heat exchanger being connected in parallel between propylene compensator and the first water cooler again；Second refrigeration is followed
Second cryogen storage tank, the second cryogen compensator, the second refrigerant compressor and the second water cooler are sequentially connected in series by endless tube line, simultaneously
Main heat exchanger is connected in parallel between the second cryogen compensator and the second water cooler again；The bottom of the knockout tower connects liquefied gas
Gathering line；The top of the gas-liquid separator connects Hydrogen collection pipeline, and bottom connects fuel gas gathering line.
Above-mentioned technical proposal can advanced optimize are as follows:
The gas sweetening tower is using ethanol amine as desulfurizing agent.
The drying and dehydrating tower uses molecular sieve adsorbing and dewatering agent.
The propylene compressor and the second refrigerant compressor are all made of screw machine.
The propylene compensator and the second cryogen compensator are vertical tank.
The material of the propylene compensator and the second cryogen compensator uses stainless steel.
The pipeline uses steel pipeline.
Recycle device based on above-mentioned hydrogen-rich gas carries out the technique of hydrogen-rich gas recycling, including walks as follows
It is rapid:
(1) feed gas preprocessing: gasoline hydrogenation is fractionated tower overhead gas, gasoline hydrogenation stablizes tower overhead gas, low point of diesel oil hydrofining
Gas, diesel oil hydrofining sour gas and gas holder gas enter gas sweetening tower desulfurization, then by the gas and reformation hydrogen PSA after desulfurization
Resolution gas, diesel oil hydrogenation modification sweet dry gas converge to be buffered into unstripped gas surge tank；
(2) be dehydrated and be pressurized: the unstripped gas after buffering enters drying and dehydrating tower removing moisture, is then increased by feed gas compressor
It is depressed into 2.5MPa；
(3) cryogenic separation: enter knockout tower, the liquefaction of knockout tower tower bottom output after pressurized unstripped gas is exchanged heat by heat exchanger
Gas；Column overhead output is separated with hydrogen hydrocarbon-containing mixture as main component, using main heat exchanger be cooled to -160 DEG C it is laggard
Enter gas-liquid separator；The top output high-purity hydrogen of gas-liquid separator, the bottom output fuel gas of gas-liquid separator；
(4) refrigeration cycle is supplied: carrying out segmentation refrigeration cycle using propylene refrigerant and the second cryogen；Propylene refrigerant is balanced by propylene
Enter propylene compressor after tank buffering to be pressurized, it is cooling by the first water cooler, it is flat that propylene is returned again to after exchanging heat into heat exchanger
Weigh tank；Second cryogen enters the second refrigerant compressor after being buffered by the second cryogen compensator and is pressurized to 1.8MPa, by the second water
Cooler is cooled to 40 DEG C, returns again to the second cryogen compensator after exchanging heat into main heat exchanger.
Compared with prior art, the present invention mainly has following advantageous effects:
1. being recycled hydrogen-rich gas in such a way that desulfurization, drying and cryogenic separation handle hydrogen-rich gas, produce
Three kinds of hydrogen, liquefied gas and fuel gas products out, are successfully realized the dual utilization of hydrogen resources and energy.
2. it is free from environmental pollution, there is good environmental benefit.
3. with lesser energy and material consumption and lower cost of investment, accomplished hydrogen recovery rate >=99%, hydrogen purity >=
95%, the high standard of hydrogen recycling is realized, can be applied to oil hydrogenation to improve quality；Meanwhile it is higher also to produce added value
Liquefied gas, have significant economic benefit.
4. structure is simple, rational technology, easy to operate, it is easy maintenance.
Detailed description of the invention
Fig. 1 is structure of the invention layout and basic procedure schematic diagram；
In figure: 1- gasoline hydrogenation fractionation tower overhead gas pipeline, the stable tower overhead gas pipeline of 2- gasoline hydrogenation, low point of 3- diesel oil hydrofining
Gas pipeline, 4- diesel oil hydrofining acidity gas pipeline, 5- gas holder gas pipeline, 6- gas sweetening tower inlet manifold's line, 7- gas are de-
Sulphur tower, 8- gas sweetening tower outlet line, 9- diesel oil hydrogenation modification sweet dry gas pipeline, 10- reform hydrogen PSA and parse gas pipeline,
11- unstripped gas surge tank inlet manifold's line, 12- unstripped gas surge tank, 13- gas centre feed-line, 14- drying and dehydrating tower,
15- feed gas compressor, 16- cryogenic separation ice chest, 17- Hydrogen collection pipeline, 18- heat exchanger, 19- knockout tower, 20- main heat exchange
Device, 21- gas-liquid separator, 22- the first refrigeration cycle pipeline, 23- liquefied gas gathering line, 24- fuel gas gathering line, 25-
Second refrigeration cycle pipeline, 26- propylene tank, 27- propylene compensator, 28- propylene compressor, the first water cooler of 29-, 30-
Second cryogen storage tank, 31- the second cryogen compensator, the second refrigerant compressor of 32-, the second water cooler of 33-.
Specific embodiment
Below with reference to examples and drawings, the present invention will be described in detail.
Embodiment 1
Referring to Fig. 1.A kind of recycle device of hydrogen-rich gas, including it is gas sweetening tower 7, unstripped gas surge tank 12, dry de-
Water tower 14, feed gas compressor 15, cryogenic separation ice chest 16, refrigeration cycle supply system and pipeline.Cryogenic separation ice chest packet 16
Include heat exchanger 18, knockout tower 19, main heat exchanger 20 and gas-liquid separator 21.Refrigeration cycle supply system includes that the first refrigeration is followed
Ring mechanism and the second refrigeration cycle mechanism, the first refrigeration cycle mechanism include propylene tank 26, propylene compensator 27, propylene compression
Machine 28 and the first water cooler 29, the second refrigeration cycle mechanism include the second cryogen storage tank 30, the second cryogen compensator 31, second
Refrigerant compressor 32 and the second water cooler 33.Pipeline includes that reformation hydrogen PSA parses gas pipeline 10, diesel oil hydrogenation modification desulfurization is done
Gas pipeline 9, gasoline hydrogenation fractionation tower overhead gas pipeline 1, gasoline hydrogenation stablize tower overhead gas pipeline 2, the low gas-distributing pipe of diesel oil hydrofining
Line 3, diesel oil hydrofining acidity gas pipeline 4, gas holder gas pipeline 5, gas sweetening tower inlet manifold line 6, gas sweetening tower outlet
Pipeline 8, unstripped gas surge tank inlet manifold line 11, gas centre feed-line 13, liquefied gas gathering line 23, Hydrogen collection pipe
Line 17, fuel gas gathering line 24, the first refrigeration cycle pipeline 22 and the second refrigeration cycle pipeline 25.Gas sweetening tower air inlet is total
Pipeline 6 is separately connected gasoline hydrogenation fractionation tower overhead gas pipeline 1, gasoline hydrogenation stablizes tower overhead gas pipeline 2, low point of diesel oil hydrofining
Gas pipeline 3, diesel oil hydrofining acidity gas pipeline 4 and gas holder gas pipeline 5.Unstripped gas surge tank inlet manifold line 11 is separately connected
Reform hydrogen PSA parsing gas pipeline 10, diesel oil hydrogenation modification sweet dry gas pipeline 9 and gas sweetening tower outlet line 8.Among gas
One end of feed-line 13 connects 12 outlet side of unstripped gas surge tank, and the other end connects 21 inlet end of gas-liquid separator, on pipeline
It is sequentially connected in series drying and dehydrating tower 14, feed gas compressor 15, heat exchanger 18, knockout tower 19 and main heat exchanger 20.First refrigeration is followed
Propylene tank 26, propylene compensator 27, propylene compressor 28 and the first water cooler 29 are sequentially connected in series by endless tube line 22, while again
Heat exchanger 18 is connected in parallel between propylene compensator 27 and the first water cooler 29.Second refrigeration cycle pipeline 25 is by the second cryogen
Storage tank 30, the second cryogen compensator 31, the second refrigerant compressor 32 and the second water cooler 33 are sequentially connected in series, while again changing master
Hot device 20 is connected in parallel between the second cryogen compensator 31 and the second water cooler 33.The bottom connection liquefied gas of knockout tower 19 is collected
Pipeline 23.The top of gas-liquid separator 21 connects Hydrogen collection pipeline 17, and bottom connects fuel gas gathering line 24.
Embodiment 2
Referring to Fig. 1.A kind of recycle device of hydrogen-rich gas, including it is gas sweetening tower 7, unstripped gas surge tank 12, dry de-
Water tower 14, feed gas compressor 15, cryogenic separation ice chest 16, refrigeration cycle supply system and pipeline.Cryogenic separation ice chest packet 16
Include heat exchanger 18, knockout tower 19, main heat exchanger 20 and gas-liquid separator 21.Refrigeration cycle supply system includes that the first refrigeration is followed
Ring mechanism and the second refrigeration cycle mechanism, the first refrigeration cycle mechanism include propylene tank 26, propylene compensator 27, propylene compression
Machine 28 and the first water cooler 29, the second refrigeration cycle mechanism include the second cryogen storage tank 30, the second cryogen compensator 31, second
Refrigerant compressor 32 and the second water cooler 33.Pipeline includes that reformation hydrogen PSA parses gas pipeline 10, diesel oil hydrogenation modification desulfurization is done
Gas pipeline 9, gasoline hydrogenation fractionation tower overhead gas pipeline 1, gasoline hydrogenation stablize tower overhead gas pipeline 2, the low gas-distributing pipe of diesel oil hydrofining
Line 3, diesel oil hydrofining acidity gas pipeline 4, gas holder gas pipeline 5, gas sweetening tower inlet manifold line 6, gas sweetening tower outlet
Pipeline 8, unstripped gas surge tank inlet manifold line 11, gas centre feed-line 13, liquefied gas gathering line 23, Hydrogen collection pipe
Line 17, fuel gas gathering line 24, the first refrigeration cycle pipeline 22 and the second refrigeration cycle pipeline 25.Gas sweetening tower air inlet is total
Pipeline 6 is separately connected gasoline hydrogenation fractionation tower overhead gas pipeline 1, gasoline hydrogenation stablizes tower overhead gas pipeline 2, low point of diesel oil hydrofining
Gas pipeline 3, diesel oil hydrofining acidity gas pipeline 4 and gas holder gas pipeline 5.Unstripped gas surge tank inlet manifold line 11 is separately connected
Reform hydrogen PSA parsing gas pipeline 10, diesel oil hydrogenation modification sweet dry gas pipeline 9 and gas sweetening tower outlet line 8.Among gas
One end of feed-line 13 connects 12 outlet side of unstripped gas surge tank, and the other end connects 21 inlet end of gas-liquid separator, on pipeline
It is sequentially connected in series drying and dehydrating tower 14, feed gas compressor 15, heat exchanger 18, knockout tower 19 and main heat exchanger 20.First refrigeration is followed
Propylene tank 26, propylene compensator 27, propylene compressor 28 and the first water cooler 29 are sequentially connected in series by endless tube line 22, while again
Heat exchanger 18 is connected in parallel between propylene compensator 27 and the first water cooler 29.Second refrigeration cycle pipeline 25 is by the second cryogen
Storage tank 30, the second cryogen compensator 31, the second refrigerant compressor 32 and the second water cooler 33 are sequentially connected in series, while again changing master
Hot device 20 is connected in parallel between the second cryogen compensator 31 and the second water cooler 33.The bottom connection liquefied gas of knockout tower 19 is collected
Pipeline 23.The top of gas-liquid separator 21 connects Hydrogen collection pipeline 17, and bottom connects fuel gas gathering line 24.Gas sweetening
Tower 7 uses ethanol amine as desulfurizing agent, to realize high-efficiency desulfurization.
Embodiment 3
Referring to Fig. 1.A kind of recycle device of hydrogen-rich gas, including it is gas sweetening tower 7, unstripped gas surge tank 12, dry de-
Water tower 14, feed gas compressor 15, cryogenic separation ice chest 16, refrigeration cycle supply system and pipeline.Cryogenic separation ice chest packet 16
Include heat exchanger 18, knockout tower 19, main heat exchanger 20 and gas-liquid separator 21.Refrigeration cycle supply system includes that the first refrigeration is followed
Ring mechanism and the second refrigeration cycle mechanism, the first refrigeration cycle mechanism include propylene tank 26, propylene compensator 27, propylene compression
Machine 28 and the first water cooler 29, the second refrigeration cycle mechanism include the second cryogen storage tank 30, the second cryogen compensator 31, second
Refrigerant compressor 32 and the second water cooler 33.Pipeline includes that reformation hydrogen PSA parses gas pipeline 10, diesel oil hydrogenation modification desulfurization is done
Gas pipeline 9, gasoline hydrogenation fractionation tower overhead gas pipeline 1, gasoline hydrogenation stablize tower overhead gas pipeline 2, the low gas-distributing pipe of diesel oil hydrofining
Line 3, diesel oil hydrofining acidity gas pipeline 4, gas holder gas pipeline 5, gas sweetening tower inlet manifold line 6, gas sweetening tower outlet
Pipeline 8, unstripped gas surge tank inlet manifold line 11, gas centre feed-line 13, liquefied gas gathering line 23, Hydrogen collection pipe
Line 17, fuel gas gathering line 24, the first refrigeration cycle pipeline 22 and the second refrigeration cycle pipeline 25.Gas sweetening tower air inlet is total
Pipeline 6 is separately connected gasoline hydrogenation fractionation tower overhead gas pipeline 1, gasoline hydrogenation stablizes tower overhead gas pipeline 2, low point of diesel oil hydrofining
Gas pipeline 3, diesel oil hydrofining acidity gas pipeline 4 and gas holder gas pipeline 5.Unstripped gas surge tank inlet manifold line 11 is separately connected
Reform hydrogen PSA parsing gas pipeline 10, diesel oil hydrogenation modification sweet dry gas pipeline 9 and gas sweetening tower outlet line 8.Among gas
One end of feed-line 13 connects 12 outlet side of unstripped gas surge tank, and the other end connects 21 inlet end of gas-liquid separator, on pipeline
It is sequentially connected in series drying and dehydrating tower 14, feed gas compressor 15, heat exchanger 18, knockout tower 19 and main heat exchanger 20.First refrigeration is followed
Propylene tank 26, propylene compensator 27, propylene compressor 28 and the first water cooler 29 are sequentially connected in series by endless tube line 22, while again
Heat exchanger 18 is connected in parallel between propylene compensator 27 and the first water cooler 29.Second refrigeration cycle pipeline 25 is by the second cryogen
Storage tank 30, the second cryogen compensator 31, the second refrigerant compressor 32 and the second water cooler 33 are sequentially connected in series, while again changing master
Hot device 20 is connected in parallel between the second cryogen compensator 31 and the second water cooler 33.The bottom connection liquefied gas of knockout tower 19 is collected
Pipeline 23.The top of gas-liquid separator 21 connects Hydrogen collection pipeline 17, and bottom connects fuel gas gathering line 24.Gas sweetening
Tower 7 uses ethanol amine as desulfurizing agent, to realize high-efficiency desulfurization.Drying and dehydrating tower 14 uses molecular sieve adsorbing and dewatering agent, utilizes
Characteristic of its difference of adsorption capacity and selection absorption under different pressure and temperature conditions, the moisture in removing process gas.
Embodiment 4
Referring to Fig. 1.A kind of recycle device of hydrogen-rich gas, including it is gas sweetening tower 7, unstripped gas surge tank 12, dry de-
Water tower 14, feed gas compressor 15, cryogenic separation ice chest 16, refrigeration cycle supply system and pipeline.Cryogenic separation ice chest packet 16
Include heat exchanger 18, knockout tower 19, main heat exchanger 20 and gas-liquid separator 21.Refrigeration cycle supply system includes that the first refrigeration is followed
Ring mechanism and the second refrigeration cycle mechanism, the first refrigeration cycle mechanism include propylene tank 26, propylene compensator 27, propylene compression
Machine 28 and the first water cooler 29, the second refrigeration cycle mechanism include the second cryogen storage tank 30, the second cryogen compensator 31, second
Refrigerant compressor 32 and the second water cooler 33.Pipeline includes that reformation hydrogen PSA parses gas pipeline 10, diesel oil hydrogenation modification desulfurization is done
Gas pipeline 9, gasoline hydrogenation fractionation tower overhead gas pipeline 1, gasoline hydrogenation stablize tower overhead gas pipeline 2, the low gas-distributing pipe of diesel oil hydrofining
Line 3, diesel oil hydrofining acidity gas pipeline 4, gas holder gas pipeline 5, gas sweetening tower inlet manifold line 6, gas sweetening tower outlet
Pipeline 8, unstripped gas surge tank inlet manifold line 11, gas centre feed-line 13, liquefied gas gathering line 23, Hydrogen collection pipe
Line 17, fuel gas gathering line 24, the first refrigeration cycle pipeline 22 and the second refrigeration cycle pipeline 25.Gas sweetening tower air inlet is total
Pipeline 6 is separately connected gasoline hydrogenation fractionation tower overhead gas pipeline 1, gasoline hydrogenation stablizes tower overhead gas pipeline 2, low point of diesel oil hydrofining
Gas pipeline 3, diesel oil hydrofining acidity gas pipeline 4 and gas holder gas pipeline 5.Unstripped gas surge tank inlet manifold line 11 is separately connected
Reform hydrogen PSA parsing gas pipeline 10, diesel oil hydrogenation modification sweet dry gas pipeline 9 and gas sweetening tower outlet line 8.Among gas
One end of feed-line 13 connects 12 outlet side of unstripped gas surge tank, and the other end connects 21 inlet end of gas-liquid separator, on pipeline
It is sequentially connected in series drying and dehydrating tower 14, feed gas compressor 15, heat exchanger 18, knockout tower 19 and main heat exchanger 20.First refrigeration is followed
Propylene tank 26, propylene compensator 27, propylene compressor 28 and the first water cooler 29 are sequentially connected in series by endless tube line 22, while again
Heat exchanger 18 is connected in parallel between propylene compensator 27 and the first water cooler 29.Second refrigeration cycle pipeline 25 is by the second cryogen
Storage tank 30, the second cryogen compensator 31, the second refrigerant compressor 32 and the second water cooler 33 are sequentially connected in series, while again changing master
Hot device 20 is connected in parallel between the second cryogen compensator 31 and the second water cooler 33.The bottom connection liquefied gas of knockout tower 19 is collected
Pipeline 23.The top of gas-liquid separator 21 connects Hydrogen collection pipeline 17, and bottom connects fuel gas gathering line 24.Gas sweetening
Tower 7 uses ethanol amine as desulfurizing agent, to realize high-efficiency desulfurization.Drying and dehydrating tower 14 uses molecular sieve adsorbing and dewatering agent, utilizes
Characteristic of its difference of adsorption capacity and selection absorption under different pressure and temperature conditions, the moisture in removing process gas.Propylene
Compressor 28 and the second refrigerant compressor 32 are all made of screw machine, to improve working efficiency.
Embodiment 5
Referring to Fig. 1.A kind of recycle device of hydrogen-rich gas, including it is gas sweetening tower 7, unstripped gas surge tank 12, dry de-
Water tower 14, feed gas compressor 15, cryogenic separation ice chest 16, refrigeration cycle supply system and pipeline.Cryogenic separation ice chest packet 16
Include heat exchanger 18, knockout tower 19, main heat exchanger 20 and gas-liquid separator 21.Refrigeration cycle supply system includes that the first refrigeration is followed
Ring mechanism and the second refrigeration cycle mechanism, the first refrigeration cycle mechanism include propylene tank 26, propylene compensator 27, propylene compression
Machine 28 and the first water cooler 29, the second refrigeration cycle mechanism include the second cryogen storage tank 30, the second cryogen compensator 31, second
Refrigerant compressor 32 and the second water cooler 33.Pipeline includes that reformation hydrogen PSA parses gas pipeline 10, diesel oil hydrogenation modification desulfurization is done
Gas pipeline 9, gasoline hydrogenation fractionation tower overhead gas pipeline 1, gasoline hydrogenation stablize tower overhead gas pipeline 2, the low gas-distributing pipe of diesel oil hydrofining
Line 3, diesel oil hydrofining acidity gas pipeline 4, gas holder gas pipeline 5, gas sweetening tower inlet manifold line 6, gas sweetening tower outlet
Pipeline 8, unstripped gas surge tank inlet manifold line 11, gas centre feed-line 13, liquefied gas gathering line 23, Hydrogen collection pipe
Line 17, fuel gas gathering line 24, the first refrigeration cycle pipeline 22 and the second refrigeration cycle pipeline 25.Gas sweetening tower air inlet is total
Pipeline 6 is separately connected gasoline hydrogenation fractionation tower overhead gas pipeline 1, gasoline hydrogenation stablizes tower overhead gas pipeline 2, low point of diesel oil hydrofining
Gas pipeline 3, diesel oil hydrofining acidity gas pipeline 4 and gas holder gas pipeline 5.Unstripped gas surge tank inlet manifold line 11 is separately connected
Reform hydrogen PSA parsing gas pipeline 10, diesel oil hydrogenation modification sweet dry gas pipeline 9 and gas sweetening tower outlet line 8.Among gas
One end of feed-line 13 connects 12 outlet side of unstripped gas surge tank, and the other end connects 21 inlet end of gas-liquid separator, on pipeline
It is sequentially connected in series drying and dehydrating tower 14, feed gas compressor 15, heat exchanger 18, knockout tower 19 and main heat exchanger 20.First refrigeration is followed
Propylene tank 26, propylene compensator 27, propylene compressor 28 and the first water cooler 29 are sequentially connected in series by endless tube line 22, while again
Heat exchanger 18 is connected in parallel between propylene compensator 27 and the first water cooler 29.Second refrigeration cycle pipeline 25 is by the second cryogen
Storage tank 30, the second cryogen compensator 31, the second refrigerant compressor 32 and the second water cooler 33 are sequentially connected in series, while again changing master
Hot device 20 is connected in parallel between the second cryogen compensator 31 and the second water cooler 33.The bottom connection liquefied gas of knockout tower 19 is collected
Pipeline 23.The top of gas-liquid separator 21 connects Hydrogen collection pipeline 17, and bottom connects fuel gas gathering line 24.Gas sweetening
Tower 7 uses ethanol amine as desulfurizing agent, to realize high-efficiency desulfurization.Drying and dehydrating tower 14 uses molecular sieve adsorbing and dewatering agent, utilizes
Characteristic of its difference of adsorption capacity and selection absorption under different pressure and temperature conditions, the moisture in removing process gas.Propylene
Compressor 28 and the second refrigerant compressor 32 are all made of screw machine, to improve working efficiency.Propylene compensator 27 and the second cryogen
Compensator 31 is vertical tank, with convenient to use；The preferred stainless steel of material uses the longevity to improve its service performance and extend it
Life.
Embodiment 6
Referring to Fig. 1.A kind of recycle device of hydrogen-rich gas, including it is gas sweetening tower 7, unstripped gas surge tank 12, dry de-
Water tower 14, feed gas compressor 15, cryogenic separation ice chest 16, refrigeration cycle supply system and pipeline.Cryogenic separation ice chest packet 16
Include heat exchanger 18, knockout tower 19, main heat exchanger 20 and gas-liquid separator 21.Refrigeration cycle supply system includes that the first refrigeration is followed
Ring mechanism and the second refrigeration cycle mechanism, the first refrigeration cycle mechanism include propylene tank 26, propylene compensator 27, propylene compression
Machine 28 and the first water cooler 29, the second refrigeration cycle mechanism include the second cryogen storage tank 30, the second cryogen compensator 31, second
Refrigerant compressor 32 and the second water cooler 33.Pipeline includes that reformation hydrogen PSA parses gas pipeline 10, diesel oil hydrogenation modification desulfurization is done
Gas pipeline 9, gasoline hydrogenation fractionation tower overhead gas pipeline 1, gasoline hydrogenation stablize tower overhead gas pipeline 2, the low gas-distributing pipe of diesel oil hydrofining
Line 3, diesel oil hydrofining acidity gas pipeline 4, gas holder gas pipeline 5, gas sweetening tower inlet manifold line 6, gas sweetening tower outlet
Pipeline 8, unstripped gas surge tank inlet manifold line 11, gas centre feed-line 13, liquefied gas gathering line 23, Hydrogen collection pipe
Line 17, fuel gas gathering line 24, the first refrigeration cycle pipeline 22 and the second refrigeration cycle pipeline 25.Gas sweetening tower air inlet is total
Pipeline 6 is separately connected gasoline hydrogenation fractionation tower overhead gas pipeline 1, gasoline hydrogenation stablizes tower overhead gas pipeline 2, low point of diesel oil hydrofining
Gas pipeline 3, diesel oil hydrofining acidity gas pipeline 4 and gas holder gas pipeline 5.Unstripped gas surge tank inlet manifold line 11 is separately connected
Reform hydrogen PSA parsing gas pipeline 10, diesel oil hydrogenation modification sweet dry gas pipeline 9 and gas sweetening tower outlet line 8.Among gas
One end of feed-line 13 connects 12 outlet side of unstripped gas surge tank, and the other end connects 21 inlet end of gas-liquid separator, on pipeline
It is sequentially connected in series drying and dehydrating tower 14, feed gas compressor 15, heat exchanger 18, knockout tower 19 and main heat exchanger 20.First refrigeration is followed
Propylene tank 26, propylene compensator 27, propylene compressor 28 and the first water cooler 29 are sequentially connected in series by endless tube line 22, while again
Heat exchanger 18 is connected in parallel between propylene compensator 27 and the first water cooler 29.Second refrigeration cycle pipeline 25 is by the second cryogen
Storage tank 30, the second cryogen compensator 31, the second refrigerant compressor 32 and the second water cooler 33 are sequentially connected in series, while again changing master
Hot device 20 is connected in parallel between the second cryogen compensator 31 and the second water cooler 33.The bottom connection liquefied gas of knockout tower 19 is collected
Pipeline 23.The top of gas-liquid separator 21 connects Hydrogen collection pipeline 17, and bottom connects fuel gas gathering line 24.Gas sweetening
Tower 7 uses ethanol amine as desulfurizing agent, to realize high-efficiency desulfurization.Drying and dehydrating tower 14 uses molecular sieve adsorbing and dewatering agent, utilizes
Characteristic of its difference of adsorption capacity and selection absorption under different pressure and temperature conditions, the moisture in removing process gas.Propylene
Compressor 28 and the second refrigerant compressor 32 are all made of screw machine, to improve working efficiency.Propylene compensator 27 and the second cryogen
Compensator 31 is vertical tank, with convenient to use；The preferred stainless steel of material uses the longevity to improve its service performance and extend it
Life.Pipeline uses steel pipeline, to improve its use reliability.
Embodiment 7
Referring to Fig. 1.The recycle device of the hydrogen-rich gas carries out hydrogen-rich gas recycling based on the above embodiment
Technique includes the following steps:
(1) feed gas preprocessing: gasoline hydrogenation is fractionated tower overhead gas, gasoline hydrogenation stablizes tower overhead gas, low point of diesel oil hydrofining
Gas, diesel oil hydrofining sour gas and gas holder gas enter gas sweetening tower desulfurization, then by the gas and reformation hydrogen PSA after desulfurization
Resolution gas, diesel oil hydrogenation modification sweet dry gas converge to be buffered into unstripped gas surge tank；
(2) be dehydrated and be pressurized: the unstripped gas after buffering enters drying and dehydrating tower removing moisture, is then increased by feed gas compressor
It is depressed into 2.5MPa；
(3) cryogenic separation: enter knockout tower, the liquefaction of knockout tower tower bottom output after pressurized unstripped gas is exchanged heat by heat exchanger
Gas；Column overhead output is separated with hydrogen hydrocarbon-containing mixture as main component, using main heat exchanger be cooled to -160 DEG C it is laggard
Enter gas-liquid separator；The top output high-purity hydrogen of gas-liquid separator, the bottom output fuel gas of gas-liquid separator；
(4) refrigeration cycle is supplied: carrying out segmentation refrigeration cycle using propylene refrigerant and the second cryogen；Propylene refrigerant is balanced by propylene
Enter propylene compressor after tank buffering to be pressurized, it is cooling by the first water cooler, it is flat that propylene is returned again to after exchanging heat into heat exchanger
Weigh tank；Second cryogen enters the second refrigerant compressor after being buffered by the second cryogen compensator and is pressurized to 1.8MPa, by the second water
Cooler is cooled to 40 DEG C, returns again to the second cryogen compensator after exchanging heat into main heat exchanger.
Claims (8)
1. a kind of recycle device of hydrogen-rich gas, which is characterized in that including gas sweetening tower, unstripped gas surge tank, drying
Dehydrating tower, feed gas compressor, cryogenic separation ice chest, refrigeration cycle supply system and pipeline；The cryogenic separation ice chest includes
Heat exchanger, knockout tower, main heat exchanger and gas-liquid separator；The refrigeration cycle supply system includes the first refrigeration cycle mechanism
And the second refrigeration cycle mechanism, the first refrigeration cycle mechanism includes propylene tank, propylene compensator, propylene compressor and the first water
Cooler, the second refrigeration cycle mechanism include the second cryogen storage tank, the second cryogen compensator, the second refrigerant compressor and the second water
Cooler；The pipeline includes reforming hydrogen PSA parsing gas pipeline, diesel oil hydrogenation modification sweet dry gas pipeline, gasoline hydrogenation fractionation
Tower top gas pipeline, gasoline hydrogenation stablize tower overhead gas pipeline, the low gas-distributing pipe line of diesel oil hydrofining, diesel oil hydrofining acidity tracheae
Line, gas holder gas pipeline, gas sweetening tower inlet manifold line, gas sweetening tower outlet line, unstripped gas surge tank inlet manifold line,
Feed-line, liquefied gas gathering line, Hydrogen collection pipeline, fuel gas gathering line, the first refrigeration cycle pipeline among gas
And the second refrigeration cycle pipeline；Gas sweetening tower inlet manifold's line is separately connected gasoline hydrogenation fractionation tower overhead gas pipeline, vapour
Oily stabilized hydrogenation tower top gas pipeline, the low gas-distributing pipe line of diesel oil hydrofining, diesel oil hydrofining acidity gas pipeline and gas holder tracheae
Line；Unstripped gas surge tank inlet manifold's line, which is separately connected, reforms hydrogen PSA parsing gas pipeline, diesel oil hydrogenation modification sweet dry gas
Pipeline and gas sweetening tower outlet line；One end of feed-line connects unstripped gas surge tank outlet side among the gas, separately
One end connects gas-liquid separator inlet end, is sequentially connected in series drying and dehydrating tower, feed gas compressor, heat exchanger, knockout tower on pipeline
And main heat exchanger；The first refrigeration cycle pipeline is by propylene tank, propylene compensator, propylene compressor and the first water cooler
It is sequentially connected in series, while heat exchanger being connected in parallel between propylene compensator and the first water cooler again；The second refrigeration cycle pipe
Second cryogen storage tank, the second cryogen compensator, the second refrigerant compressor and the second water cooler are sequentially connected in series by line, while again will
Main heat exchanger is connected in parallel between the second cryogen compensator and the second water cooler；The bottom connection liquefied gas of the knockout tower is collected
Pipeline；The top of the gas-liquid separator connects Hydrogen collection pipeline, and bottom connects fuel gas gathering line.
2. a kind of recycle device of hydrogen-rich gas according to claim 1, which is characterized in that the gas sweetening tower
Using ethanol amine as desulfurizing agent.
3. a kind of recycle device of hydrogen-rich gas according to claim 2, which is characterized in that the drying and dehydrating tower
Using molecular sieve adsorbing and dewatering agent.
4. a kind of recycle device of hydrogen-rich gas according to claim 3, which is characterized in that the propylene compressor
And second refrigerant compressor be all made of screw machine.
5. a kind of recycle device of hydrogen-rich gas according to claim 4, which is characterized in that the propylene compensator
And second cryogen compensator be vertical tank.
6. a kind of recycle device of hydrogen-rich gas according to claim 5, which is characterized in that the propylene compensator
And second cryogen compensator material use stainless steel.
7. a kind of recycle device of hydrogen-rich gas according to claim 6, which is characterized in that the pipeline uses steel
Tubulation line.
8. the work that the recycle device based on hydrogen-rich gas as claimed in claim 1 to 7 carries out hydrogen-rich gas recycling
Skill, which comprises the steps of:
(1) feed gas preprocessing: gasoline hydrogenation is fractionated tower overhead gas, gasoline hydrogenation stablizes tower overhead gas, low point of diesel oil hydrofining
Gas, diesel oil hydrofining sour gas and gas holder gas enter gas sweetening tower desulfurization, then by the gas and reformation hydrogen PSA after desulfurization
Resolution gas, diesel oil hydrogenation modification sweet dry gas converge to be buffered into unstripped gas surge tank；
(2) be dehydrated and be pressurized: the unstripped gas after buffering enters drying and dehydrating tower removing moisture, is then increased by feed gas compressor
It is depressed into 2.5MPa；
(3) cryogenic separation: enter knockout tower, the liquefaction of knockout tower tower bottom output after pressurized unstripped gas is exchanged heat by heat exchanger
Gas；Column overhead output is separated with hydrogen hydrocarbon-containing mixture as main component, using main heat exchanger be cooled to -160 DEG C it is laggard
Enter gas-liquid separator；The top output high-purity hydrogen of gas-liquid separator, the bottom output fuel gas of gas-liquid separator；
(4) refrigeration cycle is supplied: carrying out segmentation refrigeration cycle using propylene refrigerant and the second cryogen；Propylene refrigerant is balanced by propylene
Enter propylene compressor after tank buffering to be pressurized, it is cooling by the first water cooler, it is flat that propylene is returned again to after exchanging heat into heat exchanger
Weigh tank；Second cryogen enters the second refrigerant compressor after being buffered by the second cryogen compensator and is pressurized to 1.8MPa, by the second water
Cooler is cooled to 40 DEG C, returns again to the second cryogen compensator after exchanging heat into main heat exchanger.
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| CN111467932A (en) * | 2020-06-05 | 2020-07-31 | 上海优华***集成技术股份有限公司 | System and method for recovering hydrogen and liquefied petroleum gas |
| CN112284037A (en) * | 2020-10-10 | 2021-01-29 | 杭州中泰深冷技术股份有限公司 | Cascade refrigeration type cold box separation device for alkane dehydrogenation and process method thereof |
| CN113945067A (en) * | 2021-11-09 | 2022-01-18 | 山东昌邑石化有限公司 | System and method for cryogenic separation and recovery of reformed hydrogen |
| CN114191930A (en) * | 2021-11-05 | 2022-03-18 | 北方华锦化学工业股份有限公司 | Method for recovering hydrogen from refinery low-pressure flare gas |
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