CN107739635A - A kind of purifying device for natural gas - Google Patents

A kind of purifying device for natural gas Download PDF

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Publication number
CN107739635A
CN107739635A CN201710767560.3A CN201710767560A CN107739635A CN 107739635 A CN107739635 A CN 107739635A CN 201710767560 A CN201710767560 A CN 201710767560A CN 107739635 A CN107739635 A CN 107739635A
Authority
CN
China
Prior art keywords
lean
outlet
absorption tower
rich liquid
entrance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710767560.3A
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Chinese (zh)
Inventor
高志强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KUNSHAN HENGAN INDUSTRY GAS CO LTD
Original Assignee
KUNSHAN HENGAN INDUSTRY GAS CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KUNSHAN HENGAN INDUSTRY GAS CO LTD filed Critical KUNSHAN HENGAN INDUSTRY GAS CO LTD
Priority to CN201710767560.3A priority Critical patent/CN107739635A/en
Publication of CN107739635A publication Critical patent/CN107739635A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • C10L3/101—Removal of contaminants
    • C10L3/102—Removal of contaminants of acid contaminants
    • C10L3/103—Sulfur containing contaminants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1406—Multiple stage absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1425—Regeneration of liquid absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1462—Removing mixtures of hydrogen sulfide and carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1468—Removing hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/18—Absorbing units; Liquid distributors therefor
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • C10L3/101—Removal of contaminants
    • C10L3/106—Removal of contaminants of water

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

The invention discloses a kind of purifying device for natural gas, including a desulfurization unit and a dewatering unit；The desulfurization unit includes entrance separator, the first absorption tower, the first flash tank, the first lean/rich liquid heat exchanger, regenerator, first circulation pump, the first cooler；The dewatering unit includes second absorption tower, the second flash tank, the second lean/rich liquid heat exchanger, regenerator, second circulation pump, the second cooler；The purifying device for natural gas of the present invention, purified treatment is carried out to natural gas, energy expenditure and running cost are low.

Description

A kind of purifying device for natural gas
Technical field
The present invention relates to Compressed Natural Gas Technology field, relates in particular to a kind of purifying device for natural gas.
Background technology
Sulfur-containing gas proportion in China's natural gas yield increases year by year.Sulfur-containing gas have to pass through purification Hydrogen sulfide (H in device removing natural gas2) and excessive carbon dioxide (C0 S2) gas could use for downstream user, and contain Higher H in sulphur natural gas2S contents can increase purifying device for natural gas solution internal circulating load, technological process is more complicated, the energy Consumption increase, cost of winning increase.Therefore, energy expenditure and the behaviour of natural gas processing process how are reduced by purifier Make cost, improve the economic benefit and the market competitiveness of oil play, turn into the problem of current enterprise is in the urgent need to address.
The content of the invention
The defects of for above-mentioned prior art, the present invention provide a kind of purifying device for natural gas, natural gas are purified Processing, energy expenditure and running cost are low.
To achieve the above object, the technical solution used in the present invention is：
A kind of purifying device for natural gas, including a desulfurization unit and a dewatering unit；
The desulfurization unit includes entrance separator, the first absorption tower, the first flash tank, the first lean/rich liquid heat exchanger, regeneration Tower, first circulation pump, the first cooler；The dewatering unit includes second absorption tower, the second flash tank, the second lean/rich liquid and changed Hot device, regenerator, second circulation pump, the second cooler；
The external unstripped gas air inlet pipe of entrance separator, the first entrance on the first absorption tower of its discharge end connection, described first The external first valve steaming pot feed end of first outlet on absorption tower, the external first lean/rich liquid of discharge end heat exchange of first flash tank The first entrance end of device, the first exit end connection regenerator of the first lean/rich liquid heat exchanger, the first lean/rich liquid heat exchange The second entrance of device connects the lean solution outlet of regenerator, and the second outlet of the first lean/rich liquid heat exchanger connects the first cooler, and this The outlet of one cooler connects the second entrance on the first absorption tower, the second outlet end on first absorption tower by first circulation pump External separator；
The outlet of the external separator in first entrance end of the second absorption tower, the first outlet external second of the second absorption tower Flash tank, the first entrance end of the external second lean/rich liquid heat exchanger of discharge end of second flash tank, the second lean/rich liquid change The external regenerator of first exit end of hot device, the lean solution outlet of the regenerator connect the second entrance of the second lean/rich liquid heat exchanger, should External second cooler in second outlet end of second lean/rich liquid heat exchanger, the outlet of second cooler passes through second circulation pump The second entrance of second absorption tower is connected, finished product natural gas dry gas exports from the second outlet end of second absorption tower.
As the improvement to above-mentioned technical proposal, first absorption tower is desulfuration absorbing tower；Second absorption tower is dehydration Tower.
As the improvement to above-mentioned technical proposal, the acid gas of the regenerator exports external cooler, and the cooler goes out Mouth connects cooling flash tank, and the liquid outlet of the cooling flash tank connects the refluxing opening of regenerator.
The present invention principle be：
Acid natural gas _ raw material gas enters the first absorption tower of desulfurization after entrance separator, carries out research desulfurization process, goes out The rich solution on absorption tower, which enters in the first flash tank, to be flashed, then carries out the first lean/rich liquid heat exchanger, from the first lean/rich liquid heat exchanger Desulphurised natural gas out cools down into the first cooler, then level first circulation pump enters desulfurization again in the first absorption tower, and The wet net natural gas come out from the first absorption tower enters in separator to be separated again, and the moisture come out from separator enters second and inhaled Receive and be dehydrated in tower, the liquid containing natural gas enters in the second valve steaming pot and enters the second lean/rich liquid heat exchanger after flash distillation, from second The lean solution that lean/rich liquid heat exchanger comes out enters regenerator, is back to the second lean/rich liquid heat exchanger again, enters together with rich solution Second cooler, then form natural gas dry gas after entering second absorption tower dehydration by second circulation pump.
Compared with prior art, the beneficial effect acquired by the present invention is：
The purifying device for natural gas of the present invention, purified treatment is carried out to natural gas, energy expenditure and running cost are low.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection.
As shown in figure 1, the purifying device for natural gas of the present invention, including a desulfurization unit and a dewatering unit；
The desulfurization unit includes entrance separator 1, the first absorption tower 2, the first flash tank 3, the first lean/rich liquid heat exchanger 4, again Raw tower 5, first circulation pump 6, the first cooler 7；The dewatering unit include second absorption tower 8, the second flash tank it is 9, second poor/ Rich solution heat exchanger 10, regenerator 11, the pump of second circulation 12, the second cooler 13；
The external unstripped gas air inlet pipe of entrance separator 1, its discharge end connect the first entrance on the first absorption tower 2, and described the The external feed end of first valve steaming pot 3 of first outlet on one absorption tower 2, the external first lean/rich liquid of discharge end of first flash tank 3 The first entrance end of heat exchanger 4, the first exit end connection regenerator 5 of the first lean/rich liquid heat exchanger 4, described first is lean/rich The second entrance of liquid heat exchanger 4 connects the lean solution outlet of regenerator 5, and it is cold that the second outlet of the first lean/rich liquid heat exchanger 4 connects first But device 7, the outlet of first cooler 7 connect the second entrance on the first absorption tower 2 by first circulation pump 6, and described first absorbs The external separator 14 in second outlet end of tower 2；
The outlet of the external separator 14 in first entrance end of the second absorption tower 8, the first outlet of the second absorption tower 8 are external Second flash tank 9, the first entrance end of the external second lean/rich liquid heat exchanger 10 of discharge end of second flash tank 9, this second The external regenerator 11 of first exit end of lean/rich liquid heat exchanger 10, the lean solution outlet of the regenerator 11 connect the second lean/rich liquid heat exchange The second entrance of device 10, external second cooler 13 in second outlet end of the second lean/rich liquid heat exchanger 10, second cooler 13 outlet connects the second entrance of second absorption tower 8 by second circulation pump 12, and finished product natural gas dry gas is from second absorption tower 8 Second outlet end output.
As the improvement to above-mentioned technical proposal, first absorption tower 2 is desulfuration absorbing tower；Second absorption tower 8 is de- Water tower.
As the improvement to above-mentioned technical proposal, the acid gas of the regenerator 5 exports external cooler 15, the cooler 15 Outlet connect cooling flash tank 16, the liquid outlet of the cooling flash tank 16 connects the refluxing opening of regenerator 5.
The present invention principle be：
Acid natural gas _ raw material gas enters the first absorption tower of desulfurization after entrance separator, carries out research desulfurization process, goes out The rich solution on absorption tower, which enters in the first flash tank, to be flashed, then carries out the first lean/rich liquid heat exchanger, from the first lean/rich liquid heat exchanger Desulphurised natural gas out cools down into the first cooler, then level first circulation pump enters desulfurization again in the first absorption tower, and The wet net natural gas come out from the first absorption tower enters in separator to be separated again, and the moisture come out from separator enters second and inhaled Receive and be dehydrated in tower, the liquid containing natural gas enters in the second valve steaming pot and enters the second lean/rich liquid heat exchanger after flash distillation, from second The lean solution that lean/rich liquid heat exchanger comes out enters regenerator, is back to the second lean/rich liquid heat exchanger again, enters together with rich solution Second cooler, then form natural gas dry gas after entering second absorption tower dehydration by second circulation pump.
Compared with prior art, the beneficial effect acquired by the present invention is：
The purifying device for natural gas of the present invention, purified treatment is carried out to natural gas, energy expenditure and running cost are low.

Claims (3)

  1. A kind of 1. purifying device for natural gas, it is characterised in that：Including a desulfurization unit and a dewatering unit；
    The desulfurization unit includes entrance separator, the first absorption tower, the first flash tank, the first lean/rich liquid heat exchanger, regeneration Tower, first circulation pump, the first cooler；The dewatering unit includes second absorption tower, the second flash tank, the second lean/rich liquid and changed Hot device, regenerator, second circulation pump, the second cooler；
    The external unstripped gas air inlet pipe of entrance separator, the first entrance on the first absorption tower of its discharge end connection, described first The external first valve steaming pot feed end of first outlet on absorption tower, the external first lean/rich liquid of discharge end heat exchange of first flash tank The first entrance end of device, the first exit end connection regenerator of the first lean/rich liquid heat exchanger, the first lean/rich liquid heat exchange The second entrance of device connects the lean solution outlet of regenerator, and the second outlet of the first lean/rich liquid heat exchanger connects the first cooler, and this The outlet of one cooler connects the second entrance on the first absorption tower, the second outlet end on first absorption tower by first circulation pump External separator；
    The outlet of the external separator in first entrance end of the second absorption tower, the first outlet external second of the second absorption tower Flash tank, the first entrance end of the external second lean/rich liquid heat exchanger of discharge end of second flash tank, the second lean/rich liquid change The external regenerator of first exit end of hot device, the lean solution outlet of the regenerator connect the second entrance of the second lean/rich liquid heat exchanger, should External second cooler in second outlet end of second lean/rich liquid heat exchanger, the outlet of second cooler passes through second circulation pump The second entrance of second absorption tower is connected, finished product natural gas dry gas exports from the second outlet end of second absorption tower.
  2. 2. purifying device for natural gas according to claim 1, it is characterised in that：First absorption tower absorbs for desulfurization Tower；Second absorption tower is dehydrating tower.
  3. 3. purifying device for natural gas according to claim 1, it is characterised in that：The acid gas outlet of the regenerator is external cold But device, the outlet of the cooler connect cooling flash tank, and the liquid outlet of the cooling flash tank connects the refluxing opening of regenerator.
CN201710767560.3A 2017-08-31 2017-08-31 A kind of purifying device for natural gas Pending CN107739635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710767560.3A CN107739635A (en) 2017-08-31 2017-08-31 A kind of purifying device for natural gas

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Application Number Priority Date Filing Date Title
CN201710767560.3A CN107739635A (en) 2017-08-31 2017-08-31 A kind of purifying device for natural gas

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CN107739635A true CN107739635A (en) 2018-02-27

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109777544A (en) * 2019-03-19 2019-05-21 山东京博石油化工有限公司 A kind of processing system of torch gas
CN109943375A (en) * 2019-03-07 2019-06-28 四川迅升油气工程技术有限公司 A kind of device and its technique for sulfur-containing gas individual well desulfurization relieving haperacidity

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102453566A (en) * 2010-10-18 2012-05-16 袁俊海 Purified gas dehydration technology applied in natural gas with high sulfur content
CN202808741U (en) * 2012-10-10 2013-03-20 中国石油集团工程设计有限责任公司 Deep purification system for natural gas desulfuration and decarburization
CN103725341A (en) * 2012-10-11 2014-04-16 刘友利 Dehydration process for purifying natural gas
CN103725340A (en) * 2012-10-11 2014-04-16 刘友利 Process for desulfurizing and purifying petroleum and natural gas
US20150166915A1 (en) * 2013-12-12 2015-06-18 Fluor Technology Corporation Configurations and methods of flexible co2 removal
CN205258394U (en) * 2015-11-20 2016-05-25 江苏瑞城能源有限公司 Natural gas purifier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102453566A (en) * 2010-10-18 2012-05-16 袁俊海 Purified gas dehydration technology applied in natural gas with high sulfur content
CN202808741U (en) * 2012-10-10 2013-03-20 中国石油集团工程设计有限责任公司 Deep purification system for natural gas desulfuration and decarburization
CN103725341A (en) * 2012-10-11 2014-04-16 刘友利 Dehydration process for purifying natural gas
CN103725340A (en) * 2012-10-11 2014-04-16 刘友利 Process for desulfurizing and purifying petroleum and natural gas
US20150166915A1 (en) * 2013-12-12 2015-06-18 Fluor Technology Corporation Configurations and methods of flexible co2 removal
CN205258394U (en) * 2015-11-20 2016-05-25 江苏瑞城能源有限公司 Natural gas purifier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109943375A (en) * 2019-03-07 2019-06-28 四川迅升油气工程技术有限公司 A kind of device and its technique for sulfur-containing gas individual well desulfurization relieving haperacidity
CN109777544A (en) * 2019-03-19 2019-05-21 山东京博石油化工有限公司 A kind of processing system of torch gas

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Application publication date: 20180227