CN205874316U - Condensate desulfurization stabilising arrangement - Google Patents

Condensate desulfurization stabilising arrangement Download PDF

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Publication number
CN205874316U
CN205874316U CN201620846091.5U CN201620846091U CN205874316U CN 205874316 U CN205874316 U CN 205874316U CN 201620846091 U CN201620846091 U CN 201620846091U CN 205874316 U CN205874316 U CN 205874316U
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condensate
desulfurization
phase
stabilizer
stabilized
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刘慧敏
刘改焕
诸林
李璐伶
蒲远洋
程林
陈韶华
周明宇
田静
郭庆生
汤智昀
马先
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China National Petroleum Corp
China Petroleum Engineering and Construction Corp
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China National Petroleum Corp Engineering Design Co Ltd
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Abstract

The utility model discloses a condensate desulfurization stabilising arrangement, including the not steady state condensate flash tank that connects gradually, not steady state condensate filter, one -level heat exchanger, three -phase separator, second grade heat exchanger, condensate desulfurization stabilization tower, bottom reboiler and steady state condensate delivery pump. The utility model has the advantages that: let in condensate stabilization desulfurizing tower bottom as air stripping gas with fuel gas, will stablely contain in the sulphur condensate with partial organic sulfur desorption, adopt simultaneously to carry and heat up in a steamer the light component desorption of technology in with the condensate, make hydrogen sulfide content and saturated steam in the product condensate press requirements such as satisfying the national standard. Simultaneously the utility model discloses still divide into direct current method and reposition of redundant personnel method according to desulfurization stabilization tower's feeding method difference, the condensate processing apparatus of processing scale >= 100 ton / day adopts the reposition of redundant personnel method more economical, and the direct current method more is applicable to the device of handling the small scale.

Description

A kind of condensate desulfurization stabilising arrangement
Technical field
This utility model relates to a kind of method utilizing stripping and stripping to combine by light component contained in condensate, sulfuration Hydrogen and the device of part organic sulfur removal.
Background technology
Condensate refers to from gas condensate field or oil field associated natural gas condensation liquid phase component out, also known as natural vapour Oil.The hydro carbons that in natural gas, part is heavier under the high temperature, condition of high voltage of oil reservoir in gas phase state, due to pressure and temperature during gas production Degree reduce, these heavier hydro carbons from natural gas condensation and go out, become light oil (title condensate).Its main component is C5Extremely C8The mixture of hydro carbons, and containing a small amount of more than C8Hydro carbons and hydrogen sulfide, thiophene-based, thio-alcohol, thioether class and vulcanize more The impurity such as thing, its fraction is many at 20 DEG C~200 DEG C, and proportion is less than 0.78, and the content ratio of its heavy hydrocarbon and non-hydrocarbon component is former Oil is low, and volatility is good.Broadly, isolated condensate from gas well well site and natural gas processing plant's gas phase treatment facility Belonging to gas reducing liquid, condensate, not directly as product, needs to carry out stabilized treatment, and removing affects the saturated steaming of condensate The lighter hydrocarbons of vapour pressure are to control the saturated vapor pressure of condensate.For sulphur-containing condensate oil, due to H2The poisoning of S burn into and sour crude oil The problems such as storage tank spontaneous combustion occur, condensate is in addition to removing light component, in addition it is also necessary to it is carried out desulfurization process.
Conventional sulphur-containing condensate oil processes technique and is respectively process for stabilizing and sulfur removal technology, and process for stabilizing predominantly reduces Its saturated vapor pressure, common process is blood pressure lowering heating flash evaporation and stripping technique, for stabilized condensate and remove part H2S.To the greatest extent Pipe is stripped of the H of part2S, but the H in stabilized condensate2S content is still unsatisfactory for requirement, needs to carry out follow-up desulfurization work Skill.Conventional sulfur removal technology mainly has stripping, adsorbs, extracts, aoxidizes and aoxidize-extraction process.Stripping process refers to steaming Vapour is as compositions such as stripping gas, hydrogen sulfide contained in removing condensate;Absorbing process have 13X molecular sieve adsorption technique and IRVAD technique removing sulfur component;Extraction process has caustic extraction technology and N mono-N-formyl morpholine N (NFM) extraction technique;Oxidation has secondary Sodium chlorate oxidation technology and NO2Oxidation technology;Oxidation-extraction technique is exactly oxidation technology and extraction technique desulfurization altogether Technique, the most relatively common have liquid-liquid sulfur removal technology, conventional fixed bed deodorizing technology, low alkali number Minalk fixed bed desulfurization work Skill, the catalyst fixed bed doctor treatment of Merox-10 and without caustic alkali Merox sulfur removal technology.
Condensate after stably desulphurizing processes can be directly used as fuel, and is the quality raw materials of petroleum refining industry, Ke Yifen Separate out the petrochemicals such as ethane, propane, butane, light oil or gasoline.The Condensate Field that the whole world has been found that at present exceedes More than 12200, it is distributed mainly on the U.S., Russia, Australia, the Central Asia and the Middle East and the Asian-Pacific area.Current domestic condensate The place of production is mainly distributed on Tarim Oilfield, Zhongyuan Oil Field, oil field, the East Sea etc., and especially Tarim Oilfield, condensate in place accounts for entirely The 80% of state's gross reserves.Along with a large amount of exploitations of whole world natural gas resource, condensate desulfurization process for stabilizing has become natural gas and has added Work and an important component part of process.
Summary of the invention
This utility model overcomes shortcoming of the prior art, it is provided that a kind of condensate desulfurization stabilising arrangement, by condensation Oil is stable and desulfurization realizes in a condensate desulfurization stabilizer, and uses fuel gas (to be mainly composed of methane CH4) make For H contained in gas stripping gas removing condensate2S and part organic sulfur.Process technique of the present utility model is more energy efficient, more environmentally friendly, Reduce running cost and cost of investment.
The technical solution of the utility model is: a kind of condensate desulfurization stabilising arrangement, the most stably coagulates including be sequentially connected with Analysis oil flash tank, non-stabilized condensate filter, first-class heat exchanger, three phase separator, secondary heat exchanger, condensate desulfurization are stablized Tower and bottom reboiler;Stabilized condensate outlet at the bottom of described condensate desulfurization stabilizer tower, secondary heat exchanger, first-class heat exchanger It is sequentially connected with stabilized condensate delivery pump;The gaseous phase outlet pipeline of described non-stabilized condensate flash tank is arranged unstable Condensate flash tank gaseous pressure regulation valve;The gaseous phase outlet pipeline of three phase separator arranges three phase separator gaseous pressure Regulation valve;Condensate desulfurization stabilizer top gaseous phase outlet conduit arranges the regulation of condensate desulfurization stabilizer top gas phase pressure Valve;Condensate desulfurization stabilizer lower end gas stripping gas inlet duct arranges gas stripping gas flow control valve;In bottom reboiler heat Flow rate of heat medium regulation valve is set on matchmaker's outlet conduit.
Compared with prior art, the utility model has the advantages that: by the stripping process for stabilizing in condensate stabilization technique with Stripping process in sulfur removal technology combines and is optimized, and designs a kind of novel desulfurization stabilising arrangement, this device according to The difference of desulfurization stabilizer feeding manner is divided into shunting and direct current method.Condensate desulfurization stabilising arrangement by flash tank, filter, First-class heat exchanger, three phase separator, secondary heat exchanger, condensate desulfurization stabilizer, bottom reboiler and condensate delivery pump Composition.Technique initially with blood pressure lowering heating flash evaporation removes the light component of a part in condensate, steady subsequently into condensate desulfurization Determining tower, employing stripping technique is by the lights removal in condensate, simultaneously from the H being passed through at the bottom of tower gas stripping gas removing condensate2S With part organic sulfur, thus reach meet requirement stabilized condensate.This device can remove it while stabilized condensate H contained by2S and part organic sulfur, energy-saving and emission-reduction, reduce running cost, reduce one-time investment, concrete manifestation is as follows:
(1) this device passes through air stripping and stripping technique, it is possible to the light component in removing condensate and H effectively2S, permissible The saturated vapor pressure of condensate is down to below 68kPa, H2S content is down to below 50ppm, thus obtains and meet stablizing of requirement Condensate.
(2) for the condensate processing means for the treatment of scale >=100 ton day, this device is by using shunting feeding manner Condensate desulfurization stabilizer is fed, improves the efficiency of heat and mass, improve condensate product volume, thus obtain more Economic benefit.For small-scale condensate processing means, the product yield that shunting is obtained with direct current method is almost identical.Therefore Shunting can be used for large-scale condensate processing means, direct current is then used for small-scale condensate processing means Method is the most economical reliable.
(3) sulfur removal technology of traditional process for stabilizing and improvement is combined, reduce the one of whole condensate processing means The investment of secondary property and operating cost.
Accompanying drawing explanation
This utility model will illustrate by example and with reference to the appended drawing, wherein:
Fig. 1 is the condensate desulfurization process for stabilizing flow chart of direct current method;
Fig. 2 is the condensate desulfurization process for stabilizing flow chart of shunting.
Detailed description of the invention
A kind of condensate desulfurization stabilising arrangement, as depicted in figs. 1 and 2, including: non-stabilized condensate flash tank 1, stable Condensate filter 2, first-class heat exchanger 3, three phase separator 4, secondary heat exchanger 5, condensate desulfurization stabilizer 6 are (to fill out in figure Material tower as a example by, plate column can be used), bottom reboiler 7, stabilized condensate delivery pump 8, non-stabilized condensate flash tank liquid phase Liquid level adjusting valve 9, non-stabilized condensate flash tank gaseous pressure regulation valve 10, three phase separator oil phase Liquid level adjusting valve 11, three Top gaseous phase pressure is stablized in phase separator aqueous phase Liquid level adjusting valve 12, three phase separator gaseous pressure regulation valve 13, condensate desulfurization Liquid phase Liquid level adjusting valve 15, gas stripping gas flow control valve 16, flow rate of heat medium regulation at the bottom of force regulating valve 14, condensate desulfurization stabilizer Valve 17 and condensate stabilization tower feed stream adjustable valve 18 (being only used for Fig. 2 shunting technique) etc., wherein:
Non-stabilized condensate flash tank 1, non-stabilized condensate filter 2, first-class heat exchanger 3, three phase separator 4, two grades Heat exchanger 5, condensate desulfurization stabilizer 6 and bottom reboiler 7 are sequentially connected with;Stablizing at the bottom of condensate desulfurization stabilizer 6 tower is solidifying Analysis oil export, secondary heat exchanger 5, first-class heat exchanger 3 and stabilized condensate delivery pump 8 are sequentially connected with;
The liquid-phase outlet pipeline of non-stabilized condensate flash tank 1 arranges non-stabilized condensate flash tank liquid phase liquid level adjust Joint valve 9;The gaseous phase outlet pipeline of non-stabilized condensate flash tank 1 arranges the regulation of non-stabilized condensate flash tank gaseous pressure Valve 10;The oil phase outlet pipe road of three phase separator 4 arranges three phase separator oil phase Liquid level adjusting valve 11;At three phase separator Three phase separator aqueous phase Liquid level adjusting valve 12 is set on the aqueous phase outlet conduit of 4;On the gaseous phase outlet pipeline of three phase separator 4 Three phase separator gaseous pressure regulation valve 13 is set;Condensate desulfurization stabilizer 6 top gaseous phase outlet conduit arranges condensation Oil desulfurization stabilizer top gas phase pressure regulation valve 14;It is stable that condensate desulfurization is set on stabilized condensate delivery pump 8 outlet conduit Tower bottom liquid phase Liquid level adjusting valve 15;Condensate desulfurization stabilizer 6 tower lower end gas stripping gas inlet duct arranges gas stripping gas flow Regulation valve 16;Bottom reboiler 7 heating agent outlet conduit arranges flow rate of heat medium regulation valve 17;
For the direct current method feeding manner shown in Fig. 1: the oil phase after three phase separator 4 separates is through secondary heat exchanger Feed from condensate desulfurization stabilizer 6 upper inlet after 5 heat exchange;
For the shunting feeding manner shown in Fig. 2: the oil phase part after three phase separator 4 separates is through two grades Feed from condensate desulfurization stabilizer 6 centre inlet (i.e. entrance 2) after heat exchanger 5 heat exchange;Another part directly takes off from condensate Sulfur stabilizer 6 upper inlet (i.e. entrance 1) feeds, and arranges condensate stabilization tower feed stream adjustable valve on this inlet duct 18。
The operation principle of this device is: this device mainly includes two parts, and the blood pressure lowering flash distillation that Part I is traditional divides From, Part II is that stripping is stablized and flashed vapour air stripping disengagement section.Non-stabilized condensate is first in non-stabilized condensate flash distillation Carrying out the blood pressure lowering flash separation of the first order in tank 1, isolated liquid phase enters in three phase separator 4 after filtering and heating blood pressure lowering Carry out second level heating blood pressure lowering flash separation.After double flash evaporation separates, most light component and part H2S is from condensate In separate and become flashed vapour and process to other treatment facility, this is traditional condensate stabilization technological principle of Part I.
From three phase separator, oil phase liquid storage section condensate out enters condensate desulfurization stabilizer, adds through reboiler Heat and mass in heat and condensate tower, according to the character that different component boiling point is different, by complete for the light component in condensate Removing;Be passed through gas stripping gas in tower bottom, fuel gas system the fuel gas provided is as gas stripping gas simultaneously.The principle of air stripping desulfurization As follows: air stripping desulfurization is a kind of physical process, mainly after methane enters condensate stabilization tower, it destroys in former stabilizer solidifying The gas-liquid two-phase balance of analysis oil, makes biphase dividing potential drop all reduce, then the gas-liquid in condensate all spreads in gas stripping gas, but Due to H2S and light phase organic sulfur with the composition in gas stripping gas more closely, so substantial amounts of H2S and light phase organic sulfur composition to Gas phase spreads, to set up a new vapor-liquid equilibrium relationship, thus reaches to separate H2S and the purpose of light phase organic sulfur.Therefore work as Gas stripping gas is from bottom to up by desulfurization stabilizer, almost all of H2S and most organic sulfur are stripped the band of gas and walk, thus reach To removing H2The requirement of S.
This device is to be combined with traditional sulfur removal technology by tradition process for stabilizing and improved, and is possible not only to reduce life Production capacity consumes, and increases product yield, it is also possible to reduce equipment one-time investment, reduces pollutant discharge amount, makes at condensate stabilization Science and engineering skill develops towards accurate, green direction.

Claims (6)

1. a condensate desulfurization stabilising arrangement, it is characterised in that: the non-stabilized condensate flash tank that includes being sequentially connected with, the most steady Determine condensate filter, first-class heat exchanger, three phase separator, secondary heat exchanger, condensate desulfurization stabilizer and bottom reboiler; Stabilized condensate outlet, secondary heat exchanger, first-class heat exchanger and stabilized condensate at the bottom of described condensate desulfurization stabilizer tower are defeated Pump is sent to be sequentially connected with;
The gaseous phase outlet pipeline of described non-stabilized condensate flash tank arranges non-stabilized condensate flash tank gaseous pressure adjust Joint valve;The gaseous phase outlet pipeline of three phase separator arranges three phase separator gaseous pressure regulation valve;Steady in condensate desulfurization Determine on column overhead gaseous phase outlet pipeline, to arrange condensate desulfurization stabilizer top gas phase pressure regulation valve;At condensate desulfurization stabilizer On the gas stripping gas inlet duct of lower end, gas stripping gas flow control valve is set;Bottom reboiler heating agent outlet conduit arranges heating agent stream Adjustable valve.
A kind of condensate desulfurization stabilising arrangement the most according to claim 1, it is characterised in that: separate through three phase separator After oil phase after secondary heat exchanger heat exchange from condensate desulfurization stabilizer upper inlet feed.
A kind of condensate desulfurization stabilising arrangement the most according to claim 1, it is characterised in that: separate through three phase separator After oil phase a part after secondary heat exchanger heat exchange from condensate desulfurization stabilizer centre inlet feed;Another part is direct Feed from condensate desulfurization stabilizer upper inlet.
A kind of condensate desulfurization stabilising arrangement the most according to claim 3, it is characterised in that: at condensate desulfurization stabilizer Condensate stabilization tower feed stream adjustable valve is set on upper inlet pipeline.
A kind of condensate desulfurization stabilising arrangement the most according to claim 1, it is characterised in that: in non-stabilized condensate flash distillation Non-stabilized condensate flash tank liquid phase Liquid level adjusting valve is set on the liquid-phase outlet pipeline of tank;Oil phase at three phase separator exports Three phase separator oil phase Liquid level adjusting valve is set on pipeline;The aqueous phase outlet conduit of three phase separator arranges three phase separator Aqueous phase Liquid level adjusting valve;Liquid phase liquid level regulation at the bottom of condensate desulfurization stabilizer is set on stabilized condensate delivery pump outlet conduit Valve.
A kind of condensate desulfurization stabilising arrangement the most according to claim 1, it is characterised in that: described condensate desulfurization is stable Tower is packed tower or plate column.
CN201620846091.5U 2016-08-05 2016-08-05 Condensate desulfurization stabilising arrangement Active CN205874316U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106010637A (en) * 2016-08-05 2016-10-12 中国石油集团工程设计有限责任公司 Condensate oil desulphurization stabilizing apparatus and method thereof
CN109722267A (en) * 2017-10-31 2019-05-07 珠海市启夏能源科技有限公司 A kind of tower tank combined type condensate gasification system and its production technology

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106010637A (en) * 2016-08-05 2016-10-12 中国石油集团工程设计有限责任公司 Condensate oil desulphurization stabilizing apparatus and method thereof
CN106010637B (en) * 2016-08-05 2017-11-28 中国石油集团工程设计有限责任公司 A kind of condensate desulfurization stabilising arrangement and process
CN109722267A (en) * 2017-10-31 2019-05-07 珠海市启夏能源科技有限公司 A kind of tower tank combined type condensate gasification system and its production technology

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GR01 Patent grant
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Effective date of registration: 20180112

Address after: 610041 Chengdu high tech Zone, Sichuan province sublimation Road No. 6

Patentee after: China Petroleum Engineering Construction Co Ltd

Address before: 610041 Chengdu high tech Zone, Sichuan province sublimation Road No. 6

Patentee before: Engineering Design Co., Ltd., China Petroleum Group

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20210224

Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen

Patentee after: CHINA NATIONAL PETROLEUM Corp.

Patentee after: CHINA PETROLEUM ENGINEERING & CONSTRUCTION Corp.

Address before: No. 6, Sichuan hi tech Zone, sublime Road, Chengdu, Sichuan

Patentee before: CHINA PETROLEUM ENGINEERING & CONSTRUCTION Corp.