CN105154013B - A kind of product recycling LNG/LPG/NGL using oil field gas prepares the system and method for two kinds of mix refrigerants - Google Patents
A kind of product recycling LNG/LPG/NGL using oil field gas prepares the system and method for two kinds of mix refrigerants Download PDFInfo
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Abstract
The invention belongs to oil field oil field gas secondary use technical fields, and in particular to a kind of product recycling LNG/LPG/NGL using oil field gas prepares the system and method for two kinds of mix refrigerants.The system comprises the raw material associated gas pressurizing being sequentially communicated by gas-liquid pipeline with associated gas discharger and purified treatment module, LPG ice chests module, LNG ice chests module and passes through gas-liquid pipeline connection heavy hydrocarbon with LPG ice chests module and LNG ice chests module and be fractionated module；The method includes shallow cold mixing cryogen preparation method and deep cooling azeotrope preparation methods.The present invention utilizes itself product in removal process（Dry gas, LPG and rich nitrogen tail gas）The LNG refrigeration process of 2 kinds of azeotrope cascade refrigerations of mixed configuration in specific proportions, to realize shallow cold, deep cooling purpose, flow is simple, and thinking is novel, and technologically advanced, energy consumption is relatively low, and investment is relatively low, stable, safeguards facility.
Description
Technical field
The invention belongs to oil field oil field gas secondary use technical fields, and in particular to a kind of to be returned using oil field gas
The product for receiving LNG/LPG/NGL prepares the system and method for two kinds of mix refrigerants.
Background technology
Associated gas is oil field oil field gas, is the volatile part of crude oil, belongs to malthenes imflammable gas, is high-quality combustion
Material and industrial chemicals are mainly derived from oil well casing, website gas-liquid separation, oil tank volatilization and crude oil stabilization etc..
In the past since associated gas disperses and measures little, complex treatment process, investment is higher, take mostly direct emission or
The modes such as burning are handled, this both polluted environment, waste resource, exist simultaneously security risk, with the whole world is energy saving, emission reduction,
Low-carbon economy is not consistent with the theory of Green Development.
Associated gas has higher economic value, and after processing is recycled, the economic product of production includes associated gas：LPG（Liquid
Liquefied oil gas）、NGL（Stable light hydrocarbon or mixed hydrocarbon）And dry gas（Natural gas after de- heavy hydrocarbon, based on methane content）, dry gas can give birth to
Produce CNG（Compressed natural gas）And LNG（Liquefied natural gas）, also can be used as the fuel of point on duty, heating furnace, conduction oil and generator
Gas can also build gas transmission line as international sale when tolerance is larger.
In terms of associated gas recovery technology, currently form to condense fractionation, cold oil absorbs, self-produced lime set is freezed and Supersonic
Speed is separated into the conventional typical process of representative, but these techniques all only produce LPG, NGL and dry gas, extra other than personal to do
Gas largely all uses the pattern of burning and exhausting；For currently used mini gas LNG production technologies, often due to gently
The few feature of hydrocarbon content, mostly using mixed in specific proportions by several pure materials and the LNG of the azeotrope that is formed production works
Skill, or use the LNG production technologies of the swell refrigeration of high energy consumption simple for process.
（1）Condensation fractionation
It uses propane or ammonia for cryogen, unstripped gas is cooled down, the mixed hydrocarbon of condensation is detached under low-temperature condition,
Heating fractionating technology is recycled to carry out the technique of lighter hydrocarbons recovery, dry gas is generally as fuel or power generation.
（2）Cold oil absorbs
Absorption oil is made using self-produced stable light hydrocarbon, cooling lighter hydrocarbons recovery skill is carried out to absorbing oil using propane refrigeration
Art.
（3）Self-produced lime set
Associated gas is set to return using the liquid hydrocarbon that associated gas condensation goes out after supercharging as refrigerant for one kind of condensation fractionation
Skill of knocking off is simpler.
（4）Supersonic speed detaches
Using high pressure associated gas after supercharging, under shallow cold operating mode, generates supersonic condition using supersonic speed pipe and freeze
Separation, keeps associated gas recovery process very simple, and investment is lower.
（5）Mini gas LNG productions
Using swell refrigerations such as nitrogen, nitrogen methane mixed gas, natural gases, or using the azeotrope system of pure material preparation
It is cold, cooling production LNG mainly is carried out to the natural gas of gas field edge gas well, frequently with skid-mounted unit.
The technologies such as the above condensation fractionation, cold oil absorption, self-produced lime set refrigeration and supersonic speed separation mainly recycle associated gas
In LPG, NGL, and there is no further working process to dry gas.And mini gas LNG techniques are mainly used in gas field side
The natural gas of edge gas well recycles.
Currently, the dry gas after being recycled using associated gas is made, fuel, pipe be defeated or production CNG, technical maturity and simple, but utilizes
Dry gas produces LNG because technology is complicated, immature, investment is higher, energy consumption is excessively high and applies at present less.Need for
A set of new technique of upper problem exploitation, achievees the purpose that simplified technique, reduces investment.
The specific proportioning of the azeotrope of Large LNG factory is the patented technology of international vendor at present, and only purchase is external
Patent just needs that millions of dollar, the domestic design unit of middle-size and small-size LNG factories is spent generally also to have oneself azeotrope
Patent matches.Azeotrope proportioning it is advanced whether can determine the production advanced and backward of LNG techniques, operation stability and
The height of reliability, the height of investment, energy consumption, simplification of flowsheet that also can be larger.
Refrigeration process has the following disadvantages in associated gas removal process at present：The small-sized sledge dress LNG dresses of conventional edge gas well
Set, frequently with nitrogen, nitrogen methane gas, natural gas swell refrigeration technique there are high energy consumption, investment is high, operating cost is high lacks
Point and pure material methane, ethylene（Ethane）, propane, the outsourcing of azeotrope complexity of isopentane and nitrogen configuration, transport,
The shortcomings that storage, configuration, detection architecture.
Invention content
The purpose of the present invention is for the refrigeration process during associated gas remanufacture LPG, NGL and LNG product,
Have the shortcomings that high energy consumption, investment is high, operating cost is high and pure material methane, ethylene（Ethane）, propane, isopentane and nitrogen
The technical issues of outsourcing of azeotrope complexity of gas configuration, transport, storage, configuration, detection architecture, and make full use of associated gas
The complete feature of component and the more convenience of product category, provide it is a kind of for associated gas remanufacture LNG, LPG,
A kind of full utilization itself product in NGL（Dry gas, LPG and rich nitrogen tail gas）As raw material, mixed configuration goes out in specific proportions
Shallow cold, 2 kinds of azeotropes of deep cooling, to realize shallow cold, deep cooling purpose.
The second object of the present invention is to provide a kind of system, LPG ice chests are independently arranged with LNG ice chests, shallow cold mixing cryogen
Independent operating then produces LPG, and whens 2 kinds of azeotrope series operations can produce LPG and LNG simultaneously, and improve device operation can
By property.
The technical solution adopted by the present invention is：A kind of product preparation two for recycling LNG/LPG/NGL using oil field gas
The system of kind mix refrigerant, includes the raw material associated gas pressurizing being connected to associated gas discharger and purified treatment module, institute
It states raw material associated gas pressurizing and purified treatment module and passes through gas-liquid pipeline connection LPG ice chest modules；The LPG ice chests module passes through
Gas-liquid pipeline connection LNG ice chest modules, the LPG ice chests module and LNG ice chests module pass through gas-liquid pipeline connection heavy hydrocarbon point
Evaporate module.
The raw material associated gas pressurizing and purified treatment module include preliminary gas-liquid separator and with preliminary gas-liquid separator
Unstripped gas supercharging unit, desulfurization and decarburization device, desulfurization associated gas pressurizing unit and the room temperature gas-liquid separator being sequentially communicated；It is described
The gas circuit of room temperature gas-liquid separator is sequentially communicated first order molecular sieve and LPG ice chests, fluid path and heavy hydrocarbon scrubbing tower）Connection.
The LPG ice chests module includes first order molecular sieve and sieves the LPG ice chests being connected to by gas circuit with first order molecular, described
Have shallow cold cooling zone in LPG ice chests, the first order molecular sieve gas circuit behind the shallow cold cooling zone of LPG ice chests with heavy hydrocarbon scrubbing tower and
Cold catch pot is connected to, and the gas circuit outlet of the cold catch pot divides two-way, is connected to all the way with secondary molecules sieve through LPG ice chests,
Another way is connected to desulfurization and decarburization device, the LPG ice chests）Also it is connected to first circulation compressor.
The LNG ice chests module includes secondary molecules sieve, and the secondary molecules sieve is connected to by gas circuit with LNG ice chests, institute
It includes deep cooling cooling zone to state LNG ice chests, the secondary molecules sieve gas circuit behind LNG ice chest deep coolings cooling zone with denitrogenation stripper
Connection, the bottom of tower of the denitrogenation stripper is connected to through LNG ice chests with LNG storage elements, the LNG ice chests also with first circulation pressure
Contracting machine and second circulation compressor are respectively communicated with.
Heavy hydrocarbon fractionation module includes heavy hydrocarbon lotion tower and the de- second that is connected to by fluid path with the outlet of heavy hydrocarbon lotion tower
Alkane tower, the dethanizer bottom of tower are connected to mixed hydrocarbon debutanizing tower, and deethanizer overhead is through LPG ice chests as methane rich tower overhead gas
Outlet；The mixed hydrocarbon debutanizing tower bottom of tower is connected to NGL storage and transportation units, and mixed hydrocarbon debutanizing tower tower top is connected to LPG storage and transportation units.
A method of the product recycling LNG/LPG/NGL using oil field gas prepares two kinds of mix refrigerants, including
Shallow cold mixing cryogen preparation method and deep cooling azeotrope preparation method, wherein
Shallow cold mixing cryogen preparation method in turn includes the following steps：
Step 1-1）Outsourcing LPG is added LPG ice chest modules as shallow cryogen after vaporization, dehydration, it is cold to carry out shallow cold mixing
Agent recycles；
Step 1-2）Raw material associated gas passes sequentially through raw material associated gas pressurizing and purified treatment module, LPG ice chest modules, warp
Enter heavy hydrocarbon after shallow cooling zone cooling and be fractionated module, gained LPG products are after refrigerated separation, and Partial Liquid Phase product is as shallow cold mixed
One of cryogen raw material is closed, the part of gained is dry again by LPG ice chests module, after cold catch pot detaches for gained combination gas
Gas is as one of shallow cold mixing cryogen raw material, and the LPG products are with dry gas with volume ratio 1:12~16 are configured to shallow cold mixing
Cryogen carries out shallow cold mixing refrigerant cycle；
Deep cooling azeotrope preparation method in turn includes the following steps：
Step 2-1）LNG ice chest modules are added as low-pressure low-temperature cryogen in outsourcing liquid nitrogen, carry out deep cooling azeotrope cycle；
Step 2-2）Go out the part of the natural gas of LPG ice chest modules after secondary molecules sieve dehydration, a portion into
Enter LNG ice chest modules, enters denitrogenation stripper after deep cooling cooling zone cools down, tower top richness nitrogen tail gas is again by LNG ice chest moulds
Block re-heat, as one of deep cooling azeotrope raw material, with LPG products in part in step 1-2 and dry gas with volume ratio 1:4~5:
11~12 are configured to deep cooling azeotrope, carry out deep cooling azeotrope cycle.
Above-mentioned steps 1-2）It in turn includes the following steps：
（1）Raw material associated gas enters preliminary gas-liquid separator, and entering desulfurization and decarburization after unstripped gas supercharging unit supercharging fills
It sets, obtains desulfurization associated gas；
（2）Desulfurization associated gas enters room temperature gas-liquid separation after the supercharging of desulfurization associated gas pressurizing unit, and gas phase is through first order molecular
It is purified associated gas after sieve dehydration；
（3）Purification associated gas enters LPG ice chests, and heavy hydrocarbon scrubbing tower, heavy hydrocarbon washing are entered after the cooling of shallow cold mixing cryogen
Column overhead combination gas enters cold catch pot after LPG ice chests cool down again, and the gas phase of cold catch pot is through LPG ice chest re-heats
After obtain dry gas；
（4）Room temperature separation lime set, the low temperature lime set of heavy hydrocarbon lotion tower of desulfurization associated gas sequentially enter de- respectively after supercharging
Ethane tower and mixed hydrocarbon debutanizing tower mix hydrocarbon debutanizing tower top gaseous phase after refrigerated separation, are partly used as phegma blowback tower top,
Remainder is as LPG products, as shallow cold mixing cryogen and one of the raw material of deep cooling azeotrope.
The shallow cold mixing refrigerant cycle system includes the following steps：The shallow cold mixing cryogen is through first circulation compressor
After supercharging, divide two-way, enter LPG ice chests all the way, reducing pressure by regulating flow forms the shallow cryogen of low-temp low-pressure after precooling, this is shallow cold
Cryogen returns to LPG ice chests and provides cold, is again introduced into first circulation compressor cycle；Another way enters LNG ice chests, by precooling
But reducing pressure by regulating flow forms the shallow cryogen of low-temp low-pressure after, which returns to LNG ice chests and provide shallow cold part cold, again into
First circulation compressor cycle.
Above-mentioned steps 2-2）It in turn includes the following steps：
（1）Go out LPG ice chests dry gas enter secondary molecules sieve deep dehydration after be divided into two-way, all the way be used as two-stage molecular sieve
Regeneration gas, after finally being mixed with raw material associated gas enter desulfurization and decarburization device, another way enter LNG ice chests through deep cooling mix it is cold
Agent cooling after enter denitrogenation stripper, raw material one of of the tower top richness nitrogen tail gas after LNG ice chest re-heats as deep cooling azeotrope,
Tower bottom liquid is used as LNG product after the supercooling of LNG ice chests；
（2）Step 1-2）In LPG products, small part is pumped into configuration system by its storage tank, through overflash, dehydration conduct
One of deep cooling azeotrope raw material, goes out the dry gas of LPG ice chests, as one of deep cooling azeotrope raw material.
The deep cooling azeotrope circulatory system includes the following steps：Deep cooling azeotrope is through second circulation compressor boost
Afterwards, into LNG ice chests, reducing pressure by regulating flow forms low-temp low-pressure deep cooling cryogen after precooling, which returns to LNG ice chests
Deep cooling part cold is provided, again into second circulation compressor cycle.
The technique effect and advantage of the present invention is as follows：The a kind of of the present invention recycles LNG/LPG/NGL using oil field gas
Product prepare the system and methods of two kinds of mix refrigerants, provide and a kind of being directed to associated gas remanufacture LNG, LPG, NGL
Product, i.e., it is a kind of to utilize itself product in removal process（Dry gas, LPG and rich nitrogen tail gas）The 2 of mixed configuration in specific proportions
The LNG refrigeration process of kind azeotrope cascade refrigeration, to realize shallow cold, deep cooling purpose.Wherein shallow cold mixing cryogen meets
LPG production requirements, temperature are generally not less than -40 DEG C, and the present invention can meet -26 DEG C of refrigeration demand；Deep cooling azeotrope meets
LNG production requirements, for temperature generally at -160 DEG C or so, the present invention meets -154 DEG C of refrigeration demand.
2 kinds of azeotrope cascade refrigerations using the present invention produce LPG and LNG, advanced main performance assessment criteria energy
The level close to pure material azeotrope is consumed, buying, transport, storage, configuration, the inspection of azeotrope complexity are configured without pure material
Examining system simplifies operation and maintenance, and operating cost is greatly saved.
Meanwhile the present invention invents and uses shallow cold, 2 kinds of azeotropes of deep cooling, meets different cryogenic temperature demands, you can string
Connection refrigeration, shallow cold mixing cryogen also can independent operating, produce LNG using 2 kinds of azeotrope cascade refrigerations of shallow cold, deep cooling, can be big
Amplitude reduction deep cooling azeotrope energy consumption.Energy consumption is 0.3kWh/m3（Natural gas）；
What a kind of product recycling LNG/LPG/NGL using oil field gas of the present invention prepared two kinds of mix refrigerants is
In system, LPG ice chests are independently arranged with LNG ice chests, and shallow cold mixing cryogen independent operating then produces LPG, 2 kinds of azeotrope series connection fortune
LPG and LNG can be produced when row simultaneously, improves device reliability of operation.
A kind of product recycling LNG/LPG/NGL using oil field gas of the present invention prepares the side of two kinds of mix refrigerants
Method can be adjusted according to the variation of feed gas composition, tolerance with the proportioning of 2 kinds of azeotropes of real-time online pair, to meet system
The variation of cold and cryogenic temperature.
What a kind of product recycling LNG/LPG/NGL using oil field gas of the present invention prepared two kinds of mix refrigerants is
System and method, flow is simple, and thinking is novel, and technologically advanced, energy consumption is relatively low, and investment is relatively low, stable, safeguards facility.
Below in conjunction with attached drawing, invention is further explained, but they are not construed as limiting the invention.
Description of the drawings
Fig. 1 is the total technological process schematic diagram of the present invention.
In figure：1, preliminary gas-liquid separator；2, unstripped gas is pressurized unit；3, desulfurization and decarburization device；4, desulfurization associated gas increases
Press group；5, room temperature gas-liquid separator；6, first circulation compressor；7, first order molecular sieves；8, LPG ice chests；9, cold catch pot；
10, heavy hydrocarbon lotion tower；11, dethanizer；12, hydrocarbon debutanizing tower is mixed；13, secondary molecules sieve；14, second circulation compressor；15、
LNG ice chests；16, denitrogenation stripper；17, LNG storage tank；18, Loading Pump.
Specific implementation mode
For the refrigeration process during associated gas remanufacture LPG, NGL and LNG product, there are high energy consumption, throw
The disadvantage and pure material methane, ethylene that money is high, operating cost is high（Ethane）, propane, isopentane and nitrogen configuration mixing it is cold
The technical issues of outsourcing of agent complexity, transport, storage, configuration, detection architecture, the present embodiment makes full use of associated gas component complete
The characteristics of and the more convenience of product category, provide it is a kind of in associated gas remanufacture LNG, LPG, NGL one
Itself product is fully utilized in kind（Dry gas, LPG and rich nitrogen tail gas）As raw material, the shallow cold, depth that mixed configuration goes out in specific proportions
Cold 2 kinds of azeotropes, to realize the device and method of shallow cold, deep cooling purpose.
Embodiment 1：
A kind of system that the product recycling LNG/LPG/NGL using oil field gas prepares two kinds of mix refrigerants, including
The raw material associated gas pressurizing and purified treatment module being connected to associated gas discharger, at the raw material associated gas pressurizing and purification
Reason module passes through gas-liquid pipeline connection LPG ice chest modules；The LPG ice chests module by gas-liquid pipeline connection LNG ice chest modules,
The LPG ice chests module and LNG ice chests module is fractionated module by gas-liquid pipeline connection heavy hydrocarbon.
Embodiment 2：
A kind of product two kinds of mix refrigerants of preparation recycling LNG/LPG/NGL using oil field gas of the present embodiment
System, on the basis of embodiment 1, the raw material associated gas pressurizing and purified treatment module include 1 He of preliminary gas-liquid separator
Unstripped gas supercharging unit 2, desulfurization and decarburization device 3, the desulfurization associated gas pressurizing unit 4 being sequentially communicated with preliminary gas-liquid separator 1
And room temperature gas-liquid separator 5；The gas circuit of the room temperature gas-liquid separator 5 is sequentially communicated first order molecular and sieves 7 and LPG ice chests 8, liquid
Road is connected to heavy hydrocarbon scrubbing tower 10.
In the present embodiment, the LPG ice chests module includes first order molecular sieve 7 and is connected to by gas circuit with first order molecular sieve 7
LPG ice chests 8, there is in the LPG ice chests 8 shallow cold cooling zone, the first order molecular to sieve 7 gas circuits and pass through the 8 shallow cooling of LPG ice chests
It is connected to heavy hydrocarbon scrubbing tower 10 and cold catch pot 9 behind area, the gas circuit outlet of the cold catch pot 9 divides two-way, all the way through LPG
Ice chest is connected to secondary molecules sieve 13, and another way is connected to desulfurization and decarburization device 3, and the LPG ice chests 8 are also compressed with first circulation
Machine is connected to.Desulfurization and decarburization device herein can be the desulfurization and decarburization tower used in NHD method desulfurization and decarburization technologies, can be natural gas
Equipment therefor in amine desulfurization decarburization technique can also be the device of other desulfurization and decarburization technologies, be known no matter which kind of
Existing apparatus technology, desulfurization and decarburization device is not illustrated herein.
In the present embodiment, the LNG ice chests module includes secondary molecules sieve 13, secondary molecules sieve 13 by gas circuit with
LNG ice chests 15 are connected to, and the LNG ice chests 15 include deep cooling cooling zone, and it is deep by LNG ice chests 15 that the secondary molecules sieve 13 gas circuits
It is connected to denitrogenation stripper 16 behind cold cooling zone, the tower of the denitrogenation stripper 16 is low through LNG ice chests 15 and LNG storage elements 17
Connection, the LNG ice chests are also respectively communicated with first circulation compressor 6 and second circulation compressor 14.
In the present embodiment, the heavy hydrocarbon fractionation module includes heavy hydrocarbon lotion tower 10 and passes through with the outlet of heavy hydrocarbon lotion tower 10
The dethanizer 11 of fluid path connection, 11 bottom of tower of the dethanizer are connected to mixed hydrocarbon debutanizing tower 12,11 tower top of dethanizer warp
LPG ice chests 8 are exported as methane rich tower overhead gas；Mixed 12 bottom of tower of hydrocarbon debutanizing tower is connected to NGL storage and transportation units, outer defeated conduct
Storage and transportation, mixed 12 tower top of hydrocarbon debutanizing tower are connected to LPG storage and transportation units, LPG storage and transportation units herein for LPG storage and transport and be
System, is made of storage tank and external transport pipeline, does not illustrate, only store and transport.
A kind of product two kinds of mix refrigerants of preparation recycling LNG/LPG/NGL using oil field gas of the present embodiment
System, connection and position relationship are as shown in Figure 1.
Embodiment 3：
Present embodiments provide it is a kind of utilize the utilization described in Examples 1 to 2 it is a kind of using oil field gas recycle LNG/
The product of LPG/NGL prepares a kind of production for recycling LNG/LPG/NGL using oil field gas of the system of two kinds of mix refrigerants
The method that object prepares two kinds of mix refrigerants, including shallow cold mixing cryogen preparation method and deep cooling azeotrope preparation method, it is shallow
Cold mixing cryogen preparation method in turn includes the following steps：
Step 1-1）LPG ice chest modules are added as shallow cryogen after vaporization, dehydration in outsourcing LPG, cold into shallow cold mixing
The agent circulatory system carries out shallow cold mixing refrigerant cycle, herein outsourcing LPG, be early period startup stage used in, when total system just
After often starting, when LPG, the dry gas of generation can meet shallow cold mixing cryogen usage amount, you can stop making for the LPG of outsourcing
With, therefore subject to operating condition of the outsourcing amount according to specific equipment.
Step 1-2）Raw material associated gas passes sequentially through raw material associated gas pressurizing and purified treatment module, LPG ice chest modules, warp
Enter heavy hydrocarbon after shallow cooling zone cooling and be fractionated module, gained LPG products are after refrigerated separation, and Partial Liquid Phase product is as shallow cold mixed
Close one of cryogen raw material, Specific amounts according to subject to needed for practical application, gained combination gas again by LPG ice chests module, through low
The part dry gas of gained is as one of shallow cold mixing cryogen raw material after warm separator 9 detaches, and the LPG products are with dry gas with body
Product ratio 1:12~16 are configured to shallow cold mixing cryogen, into shallow cold mixing refrigerant cycle system, carry out shallow cold mixing refrigerant cycle；
Deep cooling azeotrope preparation method in turn includes the following steps：
Step 2-1）LNG ice chest modules are added as low-pressure low-temperature cryogen in outsourcing liquid nitrogen, are recycled into deep cooling azeotrope
System carries out deep cooling azeotrope cycle, herein outsourcing liquid nitrogen, is used in the startup stage of early period, when total system normally opens
After dynamic, when LNG, LPG of generation, the azeotrope of dry gas formation can meet deep cooling azeotrope usage amount, you can stop
The only use of the liquid nitrogen of outsourcing, therefore subject to operating condition of the outsourcing amount according to specific equipment.
Step 2-2）Go out a part for the natural gas of LPG ice chest modules after 13 dehydration of secondary molecules sieve, a portion
Into LNG ice chest modules, enter denitrogenation stripper 16 after deep cooling cooling zone cools down, tower top richness nitrogen tail gas is cold again by LNG
Tank module re-heat, as one of deep cooling azeotrope raw material, with LPG products in part in step 1-2 and dry gas with volume ratio 1:4
~5:11~12 are configured to deep cooling azeotrope, into the deep cooling azeotrope circulatory system, carry out deep cooling azeotrope cycle, respectively
Specific ratio shared by a part is according to subject to needed for practical application.
Release flare pipeline of this associated gas air source from former field joint stations, pressure is very low, only 13kPa, raw material
Hydrogen sulfide content is higher in associated gas, and contains a certain amount of mercaptan, containing carbon dioxide and saturated water, so first passing around original
Expect associated gas pressurizing and purification process.
In the present embodiment, shallow cold mixing cryogen meets LPG production requirements, and temperature is generally not less than -40 DEG C, and the present embodiment can
Meet -26 DEG C of refrigeration demand；Deep cooling azeotrope meets LNG production requirements, and temperature is generally at -160 DEG C or so, the present embodiment
Meet -154 DEG C of refrigeration demand.
LPG and LNG, advanced main performance assessment criteria are produced using 2 kinds of azeotrope cascade refrigerations of the present embodiment
Energy consumption close to pure material azeotrope level, without pure material configure the buying of azeotrope complexity, transport, storage, configuration,
Detecting system simplifies operation and maintenance, and operating cost is greatly saved.
Meanwhile the present embodiment uses shallow cold, 2 kinds of azeotropes of deep cooling, meets different cryogenic temperature demands, you can series connection
Refrigeration, shallow cold mixing cryogen also can independent operating, produce LNG using 2 kinds of azeotrope cascade refrigerations of shallow cold, deep cooling, can be substantially
Degree reduces deep cooling azeotrope energy consumption.Energy consumption is 0.3kWh/m3（Natural gas）；
A kind of product two kinds of mix refrigerants of preparation recycling LNG/LPG/NGL using oil field gas of the present embodiment
In system, LPG ice chests 8 and LNG ice chests 15 are independently arranged, and shallow cold mixing cryogen independent operating then produces LPG, 2 kinds of azeotropes
LPG and LNG can be produced when series operation simultaneously, improves device reliability of operation.
Meanwhile it can be adjusted with the proportioning of 2 kinds of azeotropes of real-time online pair according to the variation of feed gas composition, tolerance
It is whole, to meet the variation of refrigeration cold and cryogenic temperature.
Embodiment 4：
The present embodiment is on the basis of embodiment 3, a kind of product preparation for recycling LNG/LPG/NGL using oil field gas
In the method for two kinds of mix refrigerants, step 1-2）It in turn includes the following steps：
（1）Raw material associated gas enters preliminary gas-liquid separator 1, enters desulfurization and decarburization after unstripped gas supercharging unit 2 is pressurized
Device 3 obtains desulfurization associated gas；
（2）Desulfurization associated gas enters room temperature gas-liquid separation after desulfurization associated gas pressurizing unit 4 is pressurized, and gas phase is through first order molecular
It is purified associated gas after 7 dehydration of sieve；
（3）Purification associated gas enters LPG ice chests, enters heavy hydrocarbon scrubbing tower 10 after the cooling of shallow cold mixing cryogen, heavy hydrocarbon is washed
It washs 10 tower top combination gas of tower and enters cold catch pot 9, the gas phase natural gas of cold catch pot 9 after LPG ice chests 8 cool down again
Dry gas is obtained after 8 re-heat of LPG ice chests；
（4）Room temperature separation lime set, the low temperature lime set of heavy hydrocarbon lotion tower 10 of desulfurization associated gas sequentially enter respectively after supercharging
Dethanizer 11 and mixed hydrocarbon debutanizing tower 12 mix 12 top gaseous phase of hydrocarbon debutanizing tower after refrigerated separation, are partly used as phegma
Blowback tower top, remainder as LPG products as shallow cold mixing cryogen and one of the raw material of deep cooling azeotrope, Specific amounts according to
Subject to needed for practical application.
The step of the present embodiment（4）In, after supercharging desulfurization associated gas room temperature separation lime set, heavy hydrocarbon lotion tower 10 low temperature
Lime set respectively enters dethanizer 11, and the low mixed hydrocarbon for containing the first and second alkane in 11 bottom of tower of dethanizer enters liquefied gas tower（I.e. mixed hydrocarbon takes off fourth
Alkane tower 12）, for 11 tower top methane-rich gas of dethanizer after 8 re-heat of LPG ice chests, a part enters fuel gas system as fuel gas
System, remainder enter raw material associated gas pressurizing unit as circulating air and carry out circulation and stress, and Specific amounts is according to needed for practical application
Subject to.
Liquefied gas column overhead gas phase（LPG）It is allocated as phegma blowback tower top, remainder conduct through refrigerated separation rear portion
LPG product pumps are to storage and transportation unit.Liquefied gas tower bottom of tower liquid phase（NGL）NGL products enter storage and transportation unit the most after cooling.
In the present embodiment, the shallow cold mixing refrigerant cycle system includes the following steps：The shallow cold mixing of low pressure room temperature is cold
Agent divides two-way after the supercharging of first circulation compressor 6, enters LPG ice chests 8 all the way, reducing pressure by regulating flow forms low after precooling
The warm shallow cryogen of low pressure, the shallow cryogen return to LPG ice chests 8 and provide cold, are again introduced into the cycle of first circulation compressor 6；Separately
Enter LNG ice chests 15 all the way, reducing pressure by regulating flow forms the shallow cryogen of low-temp low-pressure after precooling, which returns to LNG
Ice chest 15 provides shallow cold part cold, is again introduced into the cycle of first circulation compressor 6.
Embodiment 5
The present embodiment is on the basis of embodiment 3~4, a kind of product recycling LNG/LPG/NGL using oil field gas
In the method for preparing two kinds of mix refrigerants, step 2-2）It in turn includes the following steps：
（1）Go out LPG ice chests dry gas enter secondary molecules sieve 13 deep dehydrations after be divided into two-way, all the way be used as two-stage molecule
The regeneration gas of sieve, enters desulfurization and decarburization device 3 after finally being mixed with raw material associated gas, another way enters LNG ice chests 15 through deep cooling
Enter denitrogenation stripper 16 after azeotrope cooling, tower top richness nitrogen tail gas is used as deep cooling azeotrope after 15 re-heat of LNG ice chests
One of raw material.
（2）Step 1-2）In LPG products, small part is pumped into configuration system by its storage tank, through overflash, dehydration conduct
One of deep cooling azeotrope raw material, goes out the dry gas of LPG ice chests 8, as one of deep cooling azeotrope raw material.
16 bottom of tower liquid phase LNG of denitrogenation stripper removes storage and transportation unit after LNG ice chests 15 cool down again as LNG product.Such as
Shown in Fig. 1, LNG product enters LNG storage tank 17, enters product supply unit through Loading Pump 18.
In the present embodiment, the deep cooling azeotrope circulatory system includes the following steps：The deep cooling mixing of low pressure room temperature is cold
Agent is after the supercharging of second circulation compressor 14, and into LNG ice chests 15, reducing pressure by regulating flow forms low-temp low-pressure deep cooling after precooling
Cryogen, the deep cooling cryogen return to LNG ice chests 15 and provide deep cooling part cold, recycled again into second circulation compressor 14.
A kind of product recycling LNG/LPG/NGL using oil field gas of embodiment 3~5 prepares two kinds of mix refrigerants
Method, total technological process schematic diagram is as shown in Figure 1.
A kind of product recycling LNG/LPG/NGL using oil field gas of Examples 1 to 5 prepares two kinds of mix refrigerants
System and method, be a kind of LNG production technologies packet, be utilize project itself product（Dry gas, LPG and rich nitrogen tail gas）By specific
The shallow cold and 2 kinds of azeotropes of deep cooling of ratio mixed configuration achieve the purpose that produce LNG by the cascade refrigeration of 2 kinds of azeotropes.
The recycling project of associated gas applied to certain Russian field joint stations burning and exhausting, the economic products such as production LNG, LPG, NGL,
With good environmental benefit and economic benefit.
In practical application, shallow cold mixing cryogen is configured to：At the initial stage of operation, outsourcing operation LPG, LPG pass through it
Storage tank is pumped into configuration system, enters shallow cold mixing refrigerant cycle system through overflash, dehydration.In normal course of operation, using return
Natural gas after itself product LPG and a certain amount of LPG ice chests 8 during receipts LNG/LPG/NGL（That is dry gas）By specific ratio
Example is configured.
Deep cooling azeotrope is configured to：At the initial stage of operation, outsourcing operation liquid nitrogen is pumped into configuration system by its storage tank,
Enter the deep cooling azeotrope circulatory system through overflash, in normal course of operation, utilizes the tower top richness nitrogen tail of denitrogenation stripper 16
Gas supplements nitrogen loss；Using product itself the product LPG of recycling LNG/LPG/NGL, it is pumped into configuration system by its storage tank, is passed through
Overflash, dehydration enter the deep cooling azeotrope circulatory system；Utilize natural gas after a certain amount of LPG ice chests（That is dry gas）By specific
The ratio deep cooling azeotrope circulatory system.Three of the above product configuration is at deep cooling azeotrope.
Wherein shallow cryogen passes through LPG ice chests 8 and its circularly-supercharged system（First circulation compressor 6）Independent operating, can
Meet the LPG recovery process being widely used at present；In LNG production technologies, the series operation of 2 kinds of azeotropes provides shallow cold
With the cold of deep cooling, achieve the purpose that refrigeration.
This item purpose scale is 5.7 × 104m3/d（20℃,101.325kPa）, the total 29t/d of LNG can be produced, LPG is total
The total 8.7t/d of 21.7t/d and NGL.
A kind of product recycling LNG/LPG/NGL using oil field gas of Examples 1 to 5 prepares two kinds of mix refrigerants
System and method, provide a kind of product for associated gas remanufacture LNG, LPG, NGL, i.e., it is a kind of utilize removal process
In itself product（Dry gas, LPG and rich nitrogen tail gas）The LNG systems of 2 kinds of azeotrope cascade refrigerations of mixed configuration in specific proportions
Cold technique, to realize shallow cold, deep cooling purpose.Flow is simple, and thinking is novel, and technologically advanced, energy consumption is relatively low, and investment is relatively low,
It is stable, safeguard facility.
The content that the present embodiment does not describe in detail belongs to the common knowledge or conventional means of the industry, does not chat one by one here
It states.
The above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to preferred embodiment to this hair
It is bright to be in addition described in detail, it will be understood by those of ordinary skill in the art that, technical scheme of the present invention can be repaiied
Change or equivalent replacement should all cover and be wanted in right of the invention without departing from the objective and range of technical solution of the present invention
It asks in range.
Claims (10)
1. a kind of method that the product recycling LNG/LPG/NGL using oil field gas prepares two kinds of mix refrigerants, including it is shallow
Cold mixing cryogen preparation method and deep cooling azeotrope preparation method, wherein：
The shallow cold mixing cryogen preparation method in turn includes the following steps：
Step 1-1）Outsourcing LPG is added LPG ice chest modules as shallow cryogen after vaporization, dehydration, carries out shallow cold mixing cryogen and follow
Ring；
Step 1-2）Raw material associated gas passes sequentially through raw material associated gas pressurizing and purified treatment module, LPG ice chest modules, through shallow cold
But enter heavy hydrocarbon after area's cooling and be fractionated module, for gained LPG products after refrigerated separation, Partial Liquid Phase product is cold as shallow cold mixing
One of agent raw material, gained combination gas again by LPG ice chests module, through cold catch pot（9）The part of gained is dry after separation
Gas is as one of shallow cold mixing cryogen raw material, and the LPG products are with dry gas with volume ratio 1:12~16 are configured to shallow cold mixing
Cryogen carries out shallow cold mixing refrigerant cycle；
The deep cooling azeotrope preparation method in turn includes the following steps：
Step 2-1）LNG ice chest modules are added as low-pressure low-temperature cryogen in outsourcing liquid nitrogen, carry out deep cooling azeotrope cycle；
Step 2-2）The part for going out the natural gas of LPG ice chest modules is sieved through secondary molecules（13）After dehydration, a portion into
Enter LNG ice chest modules, enters denitrogenation stripper after deep cooling cooling zone cools down（16）, tower top richness nitrogen tail gas is cold again by LNG
Tank module re-heat, as one of deep cooling azeotrope raw material, with LPG products in part in step 1-2 and dry gas with volume ratio 1:4
~5:11~12 are configured to deep cooling azeotrope, carry out deep cooling azeotrope cycle.
2. preparing two kinds of mix refrigerants using the product of oil field gas recycling LNG/LPG/NGL as described in claim 1
Method, it is characterised in that：Step 1-2）It in turn includes the following steps：
（1）Raw material associated gas enters preliminary gas-liquid separator（1）, unit is pressurized through unstripped gas（2）Enter desulfurization and decarburization after supercharging
Device（3）, obtain desulfurization associated gas；
（2）Desulfurization associated gas enters desulfurization associated gas pressurizing unit（4）Room temperature gas-liquid separation after supercharging, gas phase are sieved through first order molecular
（7）Associated gas is purified after dehydration；
（3）Purification associated gas enters LPG ice chests, enters heavy hydrocarbon scrubbing tower after the cooling of shallow cold mixing cryogen（10）, heavy hydrocarbon washing
Tower（10）Tower top combination gas is through LPG ice chests（8）Enter cold catch pot after cooling down again（9）, cold catch pot（9）Gas phase
Dry gas is obtained after LPG ice chest re-heats；
（4）The room temperature separation lime set of desulfurization associated gas, heavy hydrocarbon lotion tower after supercharging（10）Low temperature lime set sequentially enter respectively it is de-
Ethane tower（11）And mixed hydrocarbon debutanizing tower（12）, mix hydrocarbon debutanizing tower（12）Top gaseous phase is partly used as back after refrigerated separation
Flow liquid blowback tower top, remainder is as LPG products, as shallow cold mixing cryogen and one of the raw material of deep cooling azeotrope.
3. preparing two kinds of mix refrigerants using the product of oil field gas recycling LNG/LPG/NGL as described in claim 1
Method, it is characterised in that：The shallow cold mixing refrigerant cycle system includes the following steps：The shallow cold mixing cryogen is through first
Recycle compressor（6）After supercharging, divide two-way, enters LPG ice chests all the way（8）, it is low to form low temperature for reducing pressure by regulating flow after precooling
Shallow cryogen is pressed, which returns to LPG ice chests（8）Cold is provided, first circulation compressor is again introduced into（6）Cycle；Separately
Enter LNG ice chests all the way（15）, reducing pressure by regulating flow forms the shallow cryogen of low-temp low-pressure after precooling, which returns
LNG ice chests（15）Shallow cold part cold is provided, again into first circulation compressor（6）Cycle.
4. preparing two kinds of mix refrigerants using the product of oil field gas recycling LNG/LPG/NGL as described in claim 1
Method, it is characterised in that：Step 2-2）It in turn includes the following steps：
（1）The dry gas for going out LPG ice chests enters secondary molecules sieve（13）It is divided into two-way after deep dehydration, is used as two-stage molecular sieve all the way
Regeneration gas, after finally being mixed with raw material associated gas enter desulfurization and decarburization device（3）, another way enters LNG ice chests（15）Through depth
Enter denitrogenation stripper after the cooling of cold mixing cryogen（16）, tower top richness nitrogen tail gas is through LNG ice chests（15）It is mixed as deep cooling after re-heat
One of the raw material of cryogen is closed, tower bottom liquid is through LNG ice chests（15）LNG product is used as after supercooling；
（2）Step 1-2）In LPG products, small part is pumped into configuration system by its storage tank, and deep cooling is used as through overflash, dehydration
One of azeotrope raw material goes out LPG ice chests（8）Dry gas, as one of deep cooling azeotrope raw material.
5. preparing two kinds of mix refrigerants using the product of oil field gas recycling LNG/LPG/NGL as described in claim 1
Method, it is characterised in that：The deep cooling azeotrope circulatory system includes the following steps：Deep cooling azeotrope is through second circulation
Compressor（14）After supercharging, into LNG ice chests（15）, reducing pressure by regulating flow forms low-temp low-pressure deep cooling cryogen after precooling, should
Deep cooling cryogen returns to LNG ice chests（15）Deep cooling part cold is provided, again into second circulation compressor（14）Cycle.
6. prepared by a kind of product as claimed in any one of claims 1 to 5, wherein being recycled LNG/LPG/NGL using oil field gas
The system of the method for two kinds of mix refrigerants includes the raw material associated gas pressurizing being connected to associated gas discharger and purified treatment
Module, it is characterised in that：The raw material associated gas pressurizing and purified treatment module pass through gas-liquid pipeline connection LPG ice chest modules；
The LPG ice chests module is passed through by gas-liquid pipeline connection LNG ice chest modules, the LPG ice chests module and LNG ice chest modules
Gas-liquid pipeline connection heavy hydrocarbon is fractionated module.
7. preparing two kinds of mix refrigerants using the product of oil field gas recycling LNG/LPG/NGL as claimed in claim 6
System, it is characterised in that：The raw material associated gas pressurizing and purified treatment module include preliminary gas-liquid separator（1）With with it is first
Walk gas-liquid separator（1）The unstripped gas supercharging unit being sequentially communicated（2）, desulfurization and decarburization device（3）, desulfurization associated gas pressurizing unit
（4）And room temperature gas-liquid separator（5）；The room temperature gas-liquid separator（5）Gas circuit be sequentially communicated first order molecular sieve（7）And LPG
Ice chest（8）, fluid path and heavy hydrocarbon scrubbing tower（10）Connection.
8. preparing two kinds of mix refrigerants using the product of oil field gas recycling LNG/LPG/NGL as claimed in claim 6
System, it is characterised in that：The LPG ice chests module includes first order molecular sieve（7）And it is sieved with first order molecular（7）Connected by gas circuit
Logical LPG ice chests（8）, the LPG ice chests（8）Inside there are shallow cold cooling zone, the first order molecular sieve（7）Gas circuit passes through LPG ice chests
（8）Behind shallow cold cooling zone with heavy hydrocarbon scrubbing tower（10）And cold catch pot（9）Connection, the cold catch pot（9）Gas circuit go out
Mouth divides two-way, all the way through LPG ice chests（8）It is sieved with secondary molecules（13）Connection, another way and desulfurization and decarburization device（3）Connection, institute
State LPG ice chests（8）Also it is connected to first circulation compressor.
9. preparing two kinds of mix refrigerants using the product of oil field gas recycling LNG/LPG/NGL as claimed in claim 6
System, it is characterised in that：The LNG ice chests module includes secondary molecules sieve（13）, the secondary molecules sieve（13）Pass through gas
Road and LNG ice chests（15）Connection, the LNG ice chests（15）Including deep cooling cooling zone, the secondary molecules sieve（13）Gas circuit is passed through
LNG ice chests（15）Behind deep cooling cooling zone with denitrogenation stripper（16）Connection, the denitrogenation stripper（16）Bottom of tower through LNG ice chests
（15）With LNG storage elements（17）Connection, the LNG ice chests also with first circulation compressor（6）And second circulation compressor
（14）It is respectively communicated with.
10. preparing two kinds of mix refrigerants using the product of oil field gas recycling LNG/LPG/NGL as claimed in claim 6
System, it is characterised in that：The heavy hydrocarbon fractionation module includes heavy hydrocarbon lotion tower（10）And with heavy hydrocarbon lotion tower（10）Outlet
The dethanizer being connected to by fluid path（11）, the dethanizer（11）Bottom of tower and mixed hydrocarbon debutanizing tower（12）Connection, deethanization
Tower（11）Tower top is through LPG ice chests（8）It is exported as methane rich tower overhead gas；The mixed hydrocarbon debutanizing tower（12）Bottom of tower and NGL storage and transportations
Unit is connected to, and mixes hydrocarbon debutanizing tower（12）Tower top is connected to LPG storage and transportation units.
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| CN107228525A (en) * | 2016-03-25 | 2017-10-03 | 王建基 | Oilfield Natural Gas Plant azeotrope, which freezes, natural gas liquefaction process technology and stablizes hydrocarbon mixture recovery process technology |
| CN109233927B (en) * | 2018-09-10 | 2020-06-30 | 杭州勃扬能源设备有限公司 | Recovery process of petroleum associated gas |
| CN110563540B (en) * | 2019-10-06 | 2020-05-22 | 西南石油大学 | Ethane recovery method combining pre-pressurization and propane refrigeration |
| CN112980491A (en) * | 2019-12-16 | 2021-06-18 | 天津深蓝化工技术有限公司 | Oil field associated gas light hydrocarbon recovery system |
| CN117106499B (en) * | 2023-10-23 | 2024-02-23 | 陕西航天德林科技集团有限公司 | Oilfield associated gas comprehensive utilization system and process |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0281821A1 (en) * | 1987-02-27 | 1988-09-14 | Air Products And Chemicals, Inc. | Feed gas drier precooling in mixed refrigerant natural gas liquefaction processes |
| CN102093920A (en) * | 2009-12-14 | 2011-06-15 | 武侯区巅峰机电科技研发中心 | Petroleum associated gas recycling process |
| CN202705328U (en) * | 2012-08-31 | 2013-01-30 | 中国石油化工集团公司 | Skidded complete set of device for collecting and processing oil field gas |
| CN102994180A (en) * | 2011-09-14 | 2013-03-27 | 莫俊龙 | Recovery process for petroleum associated gas |
| CN204421483U (en) * | 2015-01-08 | 2015-06-24 | 西安长庆科技工程有限责任公司 | A kind of pressure charging system of ultralow pressure associated gas LNG, LPG and NGL production process |
| CN204569829U (en) * | 2015-03-31 | 2015-08-19 | 西安长庆科技工程有限责任公司 | A kind of essence for oil field gas recovery LNG/LPG/NGL takes off heavy hydrocarbon system |
| CN205011693U (en) * | 2015-08-28 | 2016-02-03 | 西安长庆科技工程有限责任公司 | System for utilize oil field gas to retrieve two kinds of mixed refrigerant of result preparation of LNGLPGNGL |
-
2015
- 2015-08-28 CN CN201510538190.7A patent/CN105154013B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0281821A1 (en) * | 1987-02-27 | 1988-09-14 | Air Products And Chemicals, Inc. | Feed gas drier precooling in mixed refrigerant natural gas liquefaction processes |
| CN102093920A (en) * | 2009-12-14 | 2011-06-15 | 武侯区巅峰机电科技研发中心 | Petroleum associated gas recycling process |
| CN102994180A (en) * | 2011-09-14 | 2013-03-27 | 莫俊龙 | Recovery process for petroleum associated gas |
| CN202705328U (en) * | 2012-08-31 | 2013-01-30 | 中国石油化工集团公司 | Skidded complete set of device for collecting and processing oil field gas |
| CN204421483U (en) * | 2015-01-08 | 2015-06-24 | 西安长庆科技工程有限责任公司 | A kind of pressure charging system of ultralow pressure associated gas LNG, LPG and NGL production process |
| CN204569829U (en) * | 2015-03-31 | 2015-08-19 | 西安长庆科技工程有限责任公司 | A kind of essence for oil field gas recovery LNG/LPG/NGL takes off heavy hydrocarbon system |
| CN205011693U (en) * | 2015-08-28 | 2016-02-03 | 西安长庆科技工程有限责任公司 | System for utilize oil field gas to retrieve two kinds of mixed refrigerant of result preparation of LNGLPGNGL |
Non-Patent Citations (1)
| Title |
|---|
| 《混合制冷剂制冷工艺在石油伴生气液化上的应用》;崔杰诗等;《节能技术》;20150331;第33卷(第190期);第121-124页 * |
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