CN108386242A - A kind of oil field high-temperature produced liquid waste heat recovery and electricity generation system - Google Patents
A kind of oil field high-temperature produced liquid waste heat recovery and electricity generation system Download PDFInfo
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- CN108386242A CN108386242A CN201810220730.0A CN201810220730A CN108386242A CN 108386242 A CN108386242 A CN 108386242A CN 201810220730 A CN201810220730 A CN 201810220730A CN 108386242 A CN108386242 A CN 108386242A
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- 230000005611 electricity Effects 0.000 title claims abstract description 27
- 238000011084 recovery Methods 0.000 title claims abstract description 15
- 239000010808 liquid waste Substances 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 165
- 239000007789 gas Substances 0.000 claims abstract description 97
- 239000007921 spray Substances 0.000 claims abstract description 97
- 239000007788 liquid Substances 0.000 claims abstract description 81
- 239000002699 waste material Substances 0.000 claims abstract description 58
- 238000004064 recycling Methods 0.000 claims abstract description 9
- 239000003129 oil well Substances 0.000 claims description 10
- 238000009833 condensation Methods 0.000 claims description 9
- 230000005494 condensation Effects 0.000 claims description 9
- 230000000740 bleeding effect Effects 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 20
- 239000003208 petroleum Substances 0.000 abstract description 5
- 238000000605 extraction Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 118
- 230000000694 effects Effects 0.000 description 17
- 238000010438 heat treatment Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention belongs to technical field of petroleum extraction more particularly to a kind of oil field high-temperature produced liquid waste heat recovery and electricity generation system, high-temperature produced liquid is separated into low temperature Produced Liquid and oil-containing waste vapour by the system by normal pressure separator；Oil-containing waste vapour is generated into high temperature condensate liquid by spray column and detaches low temperature on-condensible gas；High temperature condensate liquid is separated into oily part and water section by oil water separator, water section is delivered to heat exchanger and the organic working medium of ORC electricity generation systems exchanges heat, water section is delivered to spray column after heat exchanger cools down and recycles again；Through exchanging heat, obtained high temperature and pressure organic working medium gas does work in expanding machine, then drives electrical power generators by expanding machine；The low-temp low-pressure organic working medium liquid ultimately generated by high temperature and pressure organic working medium gas is recycling to heat exchanger.Through the above technical solutions, solving the problems, such as oil field high-temperature produced liquid caused pollution and heat waste in decrease temperature and pressure processing procedure in the prior art.
Description
Technical field
The invention belongs to technical field of petroleum extraction more particularly to a kind of oil field high-temperature produced liquid waste heat recovery and power generation systems
System.
Background technology
Viscous crude resource is extremely abundant in the world, and oil in place is far more than the reserves of conventional crude, and the viscous crude in China stores up
Amount has the 7th in the world.
Thermal recovery mode is generally used to thickened oil recovery at present, utilizes heavy oil heating viscosity-reducing mechanism, oil reservoir thermoelasticity energy
Release mechanism of oil displacement and steam to the distillation of viscous crude, cracking, emulsification and the dilution and mixed phase drive that generate act on, by stratum original
Oil injects a large amount of steam, to improve the percolation ability of viscous crude, realizes the industrialization exploitation of viscous crude.
But inventor has found in daily work, and following deficiency exists in the prior art：
During heavy crude heat extraction, oil well produced liquid temperature is higher, pressure is larger.After being delivered to ground, need to it
Decrease temperature and pressure processing is first carried out, due to pressure reduction, it will there is a large amount of flash-off steam to generate, and pass through vapour phase surge tank respectively
It is discharged into air with liquid phase buffer tank upper outlet, due to containing pettiness oil droplet and a small amount of fixed gas in waste vapour, causes ring
Border pollution, waste thermal energy, waste petroleum resources.
Invention content
A kind of oil field high-temperature produced liquid waste heat recovery of the embodiment of the present application offer and electricity generation system, solve in the prior art
For oil field high-temperature produced liquid in decrease temperature and pressure processing procedure, the oil-containing waste vapour direct emission of generation enters pollution caused by atmosphere
And the technical issues of heat waste, reach purification oil field oil-containing waste vapour, improves the technique effect of its heat utilization rate.
A kind of oil field high-temperature produced liquid waste heat recovery of the embodiment of the present application offer and electricity generation system, the system comprises：One
Normal pressure separator, the normal pressure separator are connect with oil well, and the normal pressure separator obtains the high-temperature produced from oil well
Liquid, and the high-temperature produced liquid is separated into low temperature Produced Liquid and oil-containing waste vapour；One spray column, the spray column and the normal pressure
Separator connects, and the spray column obtains the oil-containing exhaust gas from the normal pressure separator, carries out cold and hot exchange, is formed high
Warm condensate liquid, and detach low temperature on-condensible gas；One oil water separator, the oil water separator is connect with the spray column, described
Oil water separator obtains the high temperature condensate liquid from the spray column, and by the high temperature condensate liquid be separated into oily part and
Water section；One heat exchanger, the heat exchanger are connect with the oil water separator, the spray column respectively, and the heat exchanger obtains
The water section from the oil water separator, and the progress of the organic working medium of the water section and ORC electricity generation systems is cold and hot
It exchanges, forms high temperature and pressure organic working medium gas and water at low temperature, and the water at low temperature is delivered to the spray column；One expansion
Machine, the expanding machine are connect with the heat exchanger, and the expanding machine obtains the high temperature and pressure organic working medium from heat exchanger
Gas, and to the high temperature and pressure organic working medium air work, low-temp low-pressure organic working medium gas is formed, and the work(is conveyed
To generator；One generator, the generator are connect with the expanding machine, and the generator is obtained from the expanding machine
Work(, and the work(is converted to electricity；One cooler, the cooler are connect with the expanding machine, and the cooler is come from
The low-temp low-pressure organic working medium gas of the expanding machine, and by the low-temp low-pressure organic working medium gas cooling, it is low to form low temperature
It is pressed with machine worker quality liquid；One working medium pump, the working medium pump are connect with the cooler, the heat exchanger respectively, the working medium pump
The low-temp low-pressure organic working medium liquid from the cooler is obtained, and the low-temp low-pressure organic working medium liquid is delivered to institute
State heat exchanger.
Further, the system also includes：One booster pump, affiliated booster pump respectively with the spray column, the grease
Separator connects, and the booster pump obtains the high temperature condensate liquid from the spray column, and the high temperature condensate liquid is defeated
It send to the oil water separator.
Further, the system also includes：One water circulating pump, the water circulating pump respectively with the oil water separator,
The heat exchanger connection, the water circulating pump obtains the water section from the oil water separator, and the water section is conveyed
To the heat exchanger.
Further, the spray column further includes：Shower portion, the shower portion are located at the middle part of the spray column,
The oil-containing waste vapour from the normal pressure separator is sprayed；Waste vapour condensation portion, the waste vapour condensation portion are located at
The lower part of the spray column condenses the oil-containing waste vapour, forms high temperature condensate liquid, and detach low temperature on-condensible gas；No
Solidifying gas collecting portion, the on-condensible gas collect the top that part is located at the spray column, to the low temperature on-condensible gas into
Row is collected.
Further, the system also includes：Safety valve, the safety valve respectively with the spray column and/or the oil
Separator connects, and prevents the spray column and/or the oil water separator from having an accident.
Further, the system also includes：Air bleeding valve, the air bleeding valve respectively with the spray column and/or the oil
Separator connects, and decompression is exhausted to the spray column and/or the oil water separator.
Further, the system also includes：Aspiration pump, the aspiration pump are connect with the spray column, the aspiration pump
The low temperature on-condensible gas from the spray column is obtained, and the low temperature on-condensible gas is pumped to on-condensible gas processing and is filled
It sets.
Further, the system also includes：Oilfield transportation system, the oilfield transportation system and the oil water separator
Connection, the oily part of the recycling from the oil water separator.
Further, the system also includes：Sensing unit, the sensing unit respectively with the normal pressure separator, institute
State spray column, the booster pump, the oil water separator, the heat exchanger, the expanding machine, the generator, the cycle
Water pump, the cooler, the working medium pump, the aspiration pump, fixed gas processing unit connection, sense the normal pressure
Separator, the spray column, the booster pump, the oil water separator, the heat exchanger, the expanding machine, the generator,
The running parameter of the water circulating pump, the cooler, the working medium pump, the aspiration pump, the fixed gas processing unit, and
The running parameter is transferred to control unit.
Further, the system also includes：Control unit, described control unit respectively with the normal pressure separator, institute
State spray column, the booster pump, the oil water separator, the heat exchanger, the expanding machine, the generator, the cycle
Water pump, the cooler, the working medium pump, the aspiration pump, fixed gas processing unit control connection, control the normal pressure
Separator, the spray column, the booster pump, the oil water separator, the heat exchanger, the expanding machine, the generator,
The start and stop and work of the water circulating pump, the cooler, the working medium pump, the aspiration pump, the fixed gas processing unit.
Said one in the embodiment of the present application or multiple technical solutions, at least have the following technical effect that：
1, a kind of oil field high-temperature produced liquid waste heat recovery provided by the embodiments of the present application and electricity generation system, the system pass through
High-temperature produced liquid decrease temperature and pressure is separated into low temperature Produced Liquid and oil-containing waste vapour by normal pressure separator；Using spray column by oil-containing waste vapour
Cold and hot exchange is carried out, high temperature condensate liquid is generated and isolates low temperature on-condensible gas, then utilizes booster pump that high temperature condensate liquid is defeated
It send to oil water separator, high temperature condensate liquid is separated by oily part and water section by oil water separator, it will by water circulating pump
Water section is delivered to heat exchanger and the organic working medium of ORC electricity generation systems exchanges heat, while oily part being recycled；Water section
After cryogenic heat exchanger heat exchange cooling, it is delivered to spray column and recycles；The high temperature and pressure organic working medium obtained by heat exchange
Gas does work in expanding machine, then drives electrical power generators by expanding machine；The organic working medium of high temperature and pressure is done by expanding machine
Decrease temperature and pressure after work(becomes low temperature low pressure gas, and it is low that low-temp low-pressure organic working medium gas becomes low temperature after subcooler cools down
It is pressed with machine worker quality liquid, is pressurized using working medium pump, using to cryogenic heat exchanger.Solves oil field high-temperature produced liquid in the prior art
The caused pollution and the technical issues of heat waste in decrease temperature and pressure processing procedure, it is defeated to reach oil field enclosed collection, recycling height
Warm produced fluid residual heat improves the utilization efficiency of heat energy of oil field high-temperature produced liquid, reduces waste vapour to the pollution of environment and realizes oil field
The technique effect of the cascade utilization of outer waste discharge vapour waste heat.
2, the water section of the oil water separator is delivered to the heat exchange by the embodiment of the present application by using water circulating pump
Device realizes the recycling of the water section, has reached the technique effect for avoiding waste.
3, the embodiment of the present application carries out cold and hot exchange by using the spray column to the oil-containing waste vapour, and it is cold to form high temperature
Lime set, and low temperature on-condensible gas is detached, harmless treatment is carried out to the on-condensible gas by on-condensible gas processing unit, is reached
Reduce the technique effect of waste vapour pollution.
4, the embodiment of the present application recycles the oily part from oil water separator by using oilfield transportation system, has reached and has kept away
Exempt from the oily partial contamination environment, and reduces the technique effect of waste petroleum resources.
5, the embodiment of the present application by the major part in the water section after heat exchanger cools down be delivered to spray column be used as it is cold
But water uses, the fraction in water section after heat exchanger is cooled down for it is outer it is defeated mix heat and heating, reached saving water resource,
Improve the technique effect of heat utilization rate.
Description of the drawings
Fig. 1 is a kind of oil field high-temperature produced fluid residual heat single-stage recycling and the signal of electricity generation system provided by the embodiments of the present application
Figure；
In figure：1- normal pressures separator, 2- spray columns, 3- booster pumps, 4 oil water separators, 5- circulating pumps, 6- heat exchangers, 8-
Expanding machine, 9- generators, 10- coolers, 11- working medium pumps, 12- fixed gases processing unit, 15- oilfield transportation systems, 16- pumpings
Pump.
Specific implementation mode
A kind of oil field high-temperature produced liquid waste heat recovery of offer of the embodiment of the present invention and electricity generation system, solve in the prior art
For oil field high-temperature produced liquid in decrease temperature and pressure processing procedure, the oil-containing waste vapour direct emission of generation enters pollution caused by atmosphere
And the technical issues of heat waste, reach purification oil field oil-containing waste vapour, improves the technique effect of its heat utilization rate.
The embodiment of the present application is in order to solve the above technical problems, general thought is as follows：
A kind of oil field high-temperature produced liquid waste heat recovery of the embodiment of the present application offer and electricity generation system, pass through normal pressure separator pair
High-temperature produced liquid from oil well is detached, and low temperature Produced Liquid and oil-containing waste vapour is separated into, by spray column to coming from normal pressure
The oil-containing waste vapour of separator carries out cold and hot exchange, generates high temperature condensate liquid and isolates incoagulable gas, further by not
Solidifying property gas treatment equipment carries out harmless treatment to incoagulable gas, reaches the technique effect of purification waste vapour.Meanwhile in grease
The high temperature condensate liquid from spray column is subjected to water-oil separating in separator, further recycles oil therein, while will separation
The organic working medium of the Btu utilization heat exchanger heating ORC electricity generation systems of a part of high-temperature water gone out, does work into expanding machine and drives
Electrical power generators realize that thermal energy is converted into the technique effect of electric energy；Some high-temperature water for realizing heating recycle or
The outer defeated technique effect for mixing heat；Water at low temperature after heat exchanger cools down is transferred back to spray column and is used as cooling water, to real
Thermal energy recycling and the enclosed workshop completely for having showed oil field high-temperature produced liquid, are conducive to environmental protection, while improving heat energy utilization
Rate.
To enable those skilled in the art to understand the present invention in more detail, the present invention is retouched in detail below in conjunction with attached drawing
It states.
Fig. 1 is a kind of oil field high-temperature produced liquid waste heat recovery provided by the embodiments of the present application and electricity generation system, the system
Including：Normal pressure separator 1, spray column 2, booster pump 3, oil water separator 4, water circulating pump 5, heat exchanger 6, expanding machine 8, generator
9, cooler 10, working medium pump 11, safety valve (not shown), air bleeding valve (not shown), sensing unit (do not show in figure
Go out), control unit (not shown).
Introduce each element of the system one by one below：
Normal pressure separator 1, the normal pressure separator 1 are connect with oil well, and the normal pressure separator 1 obtains the institute from oil well
High-temperature produced liquid is stated, and the high-temperature produced liquid is separated into low temperature Produced Liquid and oil-containing waste vapour；
Specifically, the entrance of the normal pressure separator 1 is connect with the outlet of the oil well, when the high temperature of the oil well is adopted
When going out liquid and being delivered to the normal pressure separator 1, the high-temperature produced liquid is carried out decrease temperature and pressure, separation by the normal pressure separator 1
At low temperature Produced Liquid and oil-containing exhaust gas.
Spray column 2, the spray column 2 are connect with the normal pressure separator 1, and the spray column 2, which obtains, comes from the normal pressure
The oil-containing waste vapour of separator 1 carries out cold and hot exchange, forms high temperature condensate liquid, and detach low temperature on-condensible gas；
Specifically, the oil-containing waste vapour entrance of the spray column 2 and the oily waste water vapor outlet of the normal pressure separator 1 connect
It connects, the oil-containing waste vapour is delivered to the spray column 2 from the normal pressure separator 1.
Further, the spray column 2 includes：
Shower portion (not shown), the shower portion are located at the middle part of the spray column 2, when the oil-containing waste vapour is from institute
When stating normal pressure separator 1 and being delivered to the spray column 2, the shower portion sprays the oil-containing waste vapour；
Waste vapour condensation portion (not shown), the waste vapour condensation portion is located at the lower part of the spray column, to the oil-containing
Waste vapour is condensed, and is formed high temperature condensate liquid, is then isolated low temperature on-condensible gas；
On-condensible gas collects part (not shown), and the on-condensible gas collects the top that part is located at the spray column, right
The low temperature on-condensible gas is collected；
Wherein, the oil-containing waste vapour entrance of the spray column 2 is between the waste vapour condensation portion and the shower portion,
And the oil-containing waste vapour enters after spray column 2 after shower portion spray, a part of oil-containing waste vapour enters the waste vapour
Condensation portion, another part are converted to the low temperature on-condensible gas and further pass through into on-condensible gas collection part
Aspiration pump 16 pumps the low temperature on-condensible gas to on-condensible gas processing unit 12, carries out harmless treatment.
Booster pump 3, affiliated booster pump 3 are connect with the spray column 2, the oil water separator 4 respectively, the booster pump 3
The high temperature condensate liquid from the spray column 2 is obtained, and the high temperature condensate liquid is delivered to the oil water separator 4；
Specifically, the entrance of the booster pump 3 is connect with the outlet of the waste vapour condensation portion of the spray column 2, described
The outlet of booster pump 3 is connect with the entrance of the oil water separator 4, to be condensed from the high temperature of the spray column 2
Liquid is delivered to the oil water separator 4.
Oil water separator 4, the oil water separator 4 are connect with the spray column 2, and the oil water separator 4 is come from
The high temperature condensate liquid of the spray column 2, and the high temperature condensate liquid is separated into oily part and water section；
Specifically, the high temperature condensate liquid from the spray column 2 is delivered to by the grease point by booster pump 3
From device 4, the high temperature condensate liquid is separated into oily part and water section by the oil water separator 4, realizes water-oil separating, the oil
Part is recycled by oilfield transportation system 15, avoids pollution environment, the water section is then delivered to by the water circulating pump 5
Heat exchanger 6 makes the water section be recycled in heat exchanger 6.
Water circulating pump 5, the water circulating pump 5 are connect with the oil water separator 4, the heat exchanger 6 respectively, the cycle
Water pump 5 obtains the water section from the oil water separator 4, and the water section is delivered to the heat exchanger 6.
Specifically, the entrance of the water circulating pump 5 is connect with the condensation-water drain of the oil water separator 4, described to follow
The outlet of ring water pump 5 is connect with the high-temperature water side entrance of the heat exchanger 6, and the grease will be come from by the water circulating pump 5
The water section of separator 4 is delivered to the heat exchanger 6.
Heat exchanger 6, the heat exchanger 6 are connect with the oil water separator 4, the spray column 2 respectively, the heat exchanger 6
The water section from the oil water separator 4 is obtained, and the organic working medium of the water section and ORC electricity generation systems is carried out
Cold and hot exchange forms high temperature and pressure organic working medium gas and water at low temperature, and the water at low temperature is delivered to the spray column 2；
Specifically, the high-temperature water side entrance of the heat exchanger 6 is connect with the outlet of the water circulating pump 5, the heat exchange
The high-temperature water side outlet of device 6 is connect with the circulating cooling water inlet of the spray column 2.Institute will be come from by the water circulating pump 5
The water section for stating oil water separator 4 is delivered to the heat exchanger 6, and the heat exchanger 6 is by the water section and ORC electricity generation systems
Organic working medium carries out cold and hot exchange, forms high temperature and pressure organic working medium gas and water at low temperature, and by the major part of the water at low temperature
It is delivered to the spray column 2 and is used as spray cooling water, the sub-fraction of the water at low temperature defeated mixes heat and heating for outer.
Expanding machine 8, the expanding machine 8 are connect with the heat exchanger 6, and the expanding machine 8 is obtained from described in heat exchanger 6
High temperature and pressure organic working medium gas, and to the high temperature and pressure organic working medium air work, form low-temp low-pressure organic working medium gas
Body, and the work(is conveyed to generator 9；
Specifically, 8 entrance of the expanding machine is connect with the organic working medium side outlet of the heat exchanger 6, the expanding machine 8
After obtaining the high temperature and pressure organic working medium gas from heat exchanger 6, to the high temperature and pressure organic working medium air work, shape
Generator 9 is conveyed to for generating electricity at low-temp low-pressure organic working medium gas, and by the work(.
Generator 9, the generator 9 are connect with the expanding machine 8, and the generator 9 is obtained from the expanding machine 8
Work(, and the work(is converted to electricity；
Specifically, 8 work done of the expanding machine is output to the generator 9, and the generator 9 converts the work(
It is exported for electric energy.
Cooler 10, the cooler 10 are connect with the expanding machine 8, and the cooler 10, which obtains, comes from the expanding machine
8 low-temp low-pressure organic working medium gas, and by the low-temp low-pressure organic working medium gas cooling, form low-temp low-pressure organic working medium
Liquid；
Specifically, the entrance of the cooler 10 is connect with the outlet of the expanding machine 8, and the cooler 10 is come
From the low-temp low-pressure organic working medium gas of the expanding machine 8, and by the low-temp low-pressure organic working medium gas cooling, form low temperature
Low pressure organic working medium liquid.
Working medium pump 11, the working medium pump are connect with the cooler 10, the heat exchanger 6 respectively, and the working medium pump 11 obtains
The low-temp low-pressure organic working medium liquid from the cooler 10 is obtained, and the low-temp low-pressure organic working medium liquid is delivered to institute
State heat exchanger 6.
Specifically, the entrance of the working medium pump 11 is connected with the outlet of the cooler 10, the working medium pump 11
Outlet is connected with the organic working medium side entrance of the heat exchanger 6, and the working medium pump 11 is obtained from the low of the cooler 10
Warm low pressure organic working medium liquid, and the low-temp low-pressure organic working medium liquid is delivered to the heat exchanger 6 and is recycled.
Further, the system also includes：
Safety valve, the safety valve are connect with the spray column and/or the oil water separator respectively, prevent the spray
Tower and/or the oil water separator have an accident.
Further, the system also includes：
Air bleeding valve, the air bleeding valve are connect with the spray column and/or the oil water separator respectively, to the spray column
And/or decompression is exhausted in the oil water separator.
Further, the system also includes：
Sensing unit, the sensing unit respectively with the normal pressure separator 1, the spray column 2, the booster pump 3, institute
State oil water separator 4, the heat exchanger 6, the expanding machine 8, the generator 9, the water circulating pump 5, the cooler 10,
The working medium pump 11, the aspiration pump 16, fixed gas processing unit connection, sense the normal pressure separator 1, described respectively
It is spray column 2, the booster pump 3, the oil water separator 4, the heat exchanger 6, the expanding machine 8, the generator 9, described
The work ginseng of water circulating pump 5, the cooler 10, the working medium pump 11, the aspiration pump 16, the fixed gas processing unit 12
Number, and the running parameter is transferred to control unit.
Specifically, the normal pressure separator 1, spray column 2, the booster pump 3, the oil water separator 4, described
It is heat exchanger 6, the expanding machine 8, the generator 9, the water circulating pump 5, the cooler 10, the working medium pump 11, described
At work, described control unit is according to its work shape of its operating parameter control for aspiration pump 16, the fixed gas processing unit 12
State, the sensing unit is then used to sense the running parameter, and the running parameter is transferred to described control unit.
Further, the system also includes：
Control unit, described control unit respectively with normal pressure separator 1, the spray column 2, the booster pump 3, the oil
It is separator 4, the heat exchanger 6, the expanding machine 8, the generator 9, the water circulating pump 5, the cooler 10, described
Working medium pump 11, the aspiration pump 16, the fixed gas processing unit 12 control connection, control the normal pressure separator 1, institute respectively
State spray column 2, the booster pump 3, the oil water separator 4, the heat exchanger 6, the expanding machine 8, the generator 9, institute
State the start and stop of water circulating pump 5, the cooler 10, the working medium pump 11, the aspiration pump 16, the fixed gas processing unit 12
And work.
Further, described control unit further includes：
Oil water separator tank level control system (not shown), the oil water separator tank level control system is for controlling institute
The liquid level for stating oil water separator 4, within the scope of realizing that the liquid level of the oil water separator 4 is maintained at rational.The oil
Separator tank level control system controls output pump frequency by liquid level gauge and is delivered on 15 pipeline of the oilfield transportation system
Motor-driven valve opening angle, by 15 water delivery of oilfield transportation system；When the liquid level of liquid level gauge reaches lower limit, then electricity is closed
Dynamic valve, to realize the control to 4 liquid level of the oil water separator.
On-condensible gas emission control systems (not shown), the fixed gas emission control systems are for controlling on-condensible gas
Discharge to the on-condensible gas processing unit 12.Pass through the pressure control of the incoagulable gas collection device of the spray column 2
Motor-driven valve is opened and closed and the start and stop of aspiration pump 16, to realize the control discharged to fixed gas.
On-condensible gas handles control system (not shown), and fixed gas processing control system described is not coagulated for controlling
The start and stop of Flash Gas Compression Skid System 12.It is sent into the fixed gas processing unit 12, the fixed gas processing control system when there is on-condensible gas
System will start the fixed gas processing unit 12, and harmless treatment is carried out to fixed gas.
ORC power-generating control system (not shown), the ORC control systems are for 11 output organic working medium of controlled medium pump
Pressure, and then control the vapourizing temperature and the degree of superheat of organic working medium, the final generated energy for controlling ORC electricity generation systems.
Cooler control system (not shown), 10 control system of cooler are used to control the water of the cooler 11
The frequency of pump or fan and start and stop, realize the cooler 10 export organic working medium fluid temperature be maintained at rational range it
It is interior.
A kind of oil field high-temperature produced liquid waste heat recovery provided by the embodiments of the present application and electricity generation system at least have following skill
Art effect：
1, a kind of oil field high-temperature produced liquid waste heat recovery provided by the embodiments of the present application and electricity generation system, the system pass through
High-temperature produced liquid decrease temperature and pressure is separated into low temperature Produced Liquid and oil-containing waste vapour by normal pressure separator；Using spray column by oil-containing waste vapour
Cold and hot exchange is carried out, high temperature condensate liquid is generated and isolates low temperature on-condensible gas, then utilizes booster pump that high temperature condensate liquid is defeated
It send to oil water separator, high temperature condensate liquid is separated by oily part and water section by oil water separator, it will by water circulating pump
Water section is delivered to heat exchanger and the organic working medium of ORC electricity generation systems exchanges heat, while oily part being recycled；Water section
After cryogenic heat exchanger heat exchange cooling, it is delivered to spray column and recycles；The high temperature and pressure organic working medium obtained by heat exchange
Gas does work in expanding machine, then drives electrical power generators by expanding machine；The organic working medium of high temperature and pressure is done by expanding machine
Decrease temperature and pressure after work(becomes low temperature low pressure gas, and it is low that low-temp low-pressure organic working medium gas becomes low temperature after subcooler cools down
It is pressed with machine worker quality liquid, is pressurized using working medium pump, using to cryogenic heat exchanger.Solves oil field high-temperature produced liquid in the prior art
The caused pollution and the technical issues of heat waste in decrease temperature and pressure processing procedure, it is defeated to reach oil field enclosed collection, recycling height
Warm produced fluid residual heat improves the utilization efficiency of heat energy of oil field high-temperature produced liquid, reduces waste vapour to the pollution of environment and realizes oil field
The technique effect of the cascade utilization of outer waste discharge vapour waste heat.
2, the water section of the oil water separator is delivered to the heat exchange by the embodiment of the present application by using water circulating pump
Device realizes the recycling of the water section, has reached the technique effect for avoiding waste.
3, the embodiment of the present application carries out cold and hot exchange by using the spray column to the oil-containing waste vapour, and it is cold to form high temperature
Lime set, and low temperature on-condensible gas is detached, harmless treatment is carried out to the on-condensible gas by on-condensible gas processing unit, is reached
Reduce the technique effect of waste vapour pollution.
4, the embodiment of the present application recycles the oily part from oil water separator by using oilfield transportation system, has reached and has kept away
Exempt from the oily partial contamination environment, and reduces the technique effect of waste petroleum resources.
5, the embodiment of the present application by the major part in the water section after heat exchanger cools down be delivered to spray column be used as it is cold
But water uses, the fraction in water section after heat exchanger is cooled down for it is outer it is defeated mix heat and heating, reached saving water resource,
Improve the technique effect of heat utilization rate.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of oil field high-temperature produced liquid waste heat recovery and electricity generation system, which is characterized in that the system comprises：
One normal pressure separator, the normal pressure separator are connect with oil well, and the normal pressure separator obtains the height from oil well
Warm Produced Liquid, and the high-temperature produced liquid is separated into low temperature Produced Liquid and oil-containing waste vapour；
One spray column, the spray column are connect with the normal pressure separator, and the spray column, which obtains, comes from the normal pressure separator
The oil-containing exhaust gas, carry out cold and hot exchange, form high temperature condensate liquid, and detach low temperature on-condensible gas；
One oil water separator, the oil water separator are connect with the spray column, and the oil water separator, which obtains, comes from the spray
The high temperature condensate liquid of tower is drenched, and the high temperature condensate liquid is separated into oily part and water section；
One heat exchanger, the heat exchanger are connect with the oil water separator, the spray column respectively, and the heat exchanger is come from
The water section of the oil water separator, and by the organic working medium of the water section and ORC electricity generation systems carry out it is cold and hot exchange,
High temperature and pressure organic working medium gas and water at low temperature are formed, and the water at low temperature is delivered to the spray column；
One expanding machine, the expanding machine are connect with the heat exchanger, and it is high that the expanding machine obtains the high temperature from heat exchanger
It is pressed with machine Working medium gas, and to the high temperature and pressure organic working medium air work, forms low-temp low-pressure organic working medium gas, and will
The work(is conveyed to generator；
One generator, the generator are connect with the expanding machine, and the generator obtains the work(from the expanding machine, and will
The work(is converted to electricity；
One cooler, the cooler are connect with the expanding machine, and it is low that the cooler obtains the low temperature from the expanding machine
It is pressed with machine Working medium gas, and by the low-temp low-pressure organic working medium gas cooling, forms low-temp low-pressure organic working medium liquid；
One working medium pump, the working medium pump are connect with the cooler, the heat exchanger respectively, and the working medium pump is obtained from described
The low-temp low-pressure organic working medium liquid of cooler, and the low-temp low-pressure organic working medium liquid is delivered to the heat exchanger.
2. the system as claimed in claim 1, which is characterized in that the system also includes：
One booster pump, affiliated booster pump are connect with the spray column, the oil water separator respectively, and the booster pump is come from
The high temperature condensate liquid of the spray column, and the high temperature condensate liquid is delivered to the oil water separator.
3. the system as claimed in claim 1, which is characterized in that the system also includes：
One water circulating pump, the water circulating pump are connect with the oil water separator, the heat exchanger respectively, and the water circulating pump obtains
The water section from the oil water separator is obtained, and the water section is delivered to the heat exchanger.
4. the system as claimed in claim 1, which is characterized in that the spray column further includes：
Shower portion, the shower portion is located at the middle part of the spray column, to the oil-containing from the normal pressure separator
Waste vapour is sprayed；
Waste vapour condensation portion, the waste vapour condensation portion are located at the lower part of the spray column, are condensed to the oil-containing waste vapour,
High temperature condensate liquid is formed, and detaches low temperature on-condensible gas；
On-condensible gas collects part, and the on-condensible gas is collected the top that part is located at the spray column, do not coagulated to the low temperature
Gas is collected.
5. the system as claimed in claim 1, which is characterized in that the system also includes：
Safety valve, the safety valve are connect with the spray column and/or the oil water separator respectively, prevent the spray column
And/or the oil water separator has an accident.
6. the system as claimed in claim 1, which is characterized in that the system also includes：
Air bleeding valve, the air bleeding valve are connect with the spray column and/or the oil water separator respectively, to the spray column and/
Or decompression is exhausted in the oil water separator.
7. the system as claimed in claim 1, which is characterized in that the system also includes：
Aspiration pump, the aspiration pump are connect with the spray column, and the aspiration pump obtains the low temperature from the spray column
On-condensible gas, and the low temperature on-condensible gas is pumped to on-condensible gas processing unit.
8. the system as claimed in claim 1, which is characterized in that the system also includes：
Oilfield transportation system, the oilfield transportation system are connect with the oil water separator, and recycling comes from the oil water separator
The oily part.
9. the system as claimed in claim 1, which is characterized in that the system also includes：
Sensing unit, the sensing unit respectively with the normal pressure separator, the spray column, the booster pump, the grease
Separator, the heat exchanger, the expanding machine, the generator, the water circulating pump, the cooler, the working medium pump, institute
State aspiration pump, fixed gas processing unit connection, sense the normal pressure separator, the spray column, the booster pump,
It is the oil water separator, the heat exchanger, the expanding machine, the generator, the water circulating pump, the cooler, described
The running parameter of working medium pump, the aspiration pump, the fixed gas processing unit, and the running parameter is transferred to control list
Member.
10. system as claimed in claim 9, which is characterized in that the system also includes：
Control unit, described control unit respectively with the normal pressure separator, the spray column, the booster pump, the grease
Separator, the heat exchanger, the expanding machine, the generator, the water circulating pump, the cooler, the working medium pump, institute
State aspiration pump, the fixed gas processing unit control connection, control the normal pressure separator, the spray column, the booster pump,
It is the oil water separator, the heat exchanger, the expanding machine, the generator, the water circulating pump, the cooler, described
The start and stop and work of working medium pump, the aspiration pump, the fixed gas processing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810220730.0A CN108386242A (en) | 2018-03-16 | 2018-03-16 | A kind of oil field high-temperature produced liquid waste heat recovery and electricity generation system |
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|---|---|---|---|
| CN201810220730.0A CN108386242A (en) | 2018-03-16 | 2018-03-16 | A kind of oil field high-temperature produced liquid waste heat recovery and electricity generation system |
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| CN108386242A true CN108386242A (en) | 2018-08-10 |
Family
ID=63067664
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| CN201810220730.0A Pending CN108386242A (en) | 2018-03-16 | 2018-03-16 | A kind of oil field high-temperature produced liquid waste heat recovery and electricity generation system |
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| CN111577205A (en) * | 2020-06-05 | 2020-08-25 | 中国石油天然气集团有限公司 | Temperature reducing device for oil gas produced by three-high oil gas well |
| CN111765376A (en) * | 2020-06-12 | 2020-10-13 | 西安本清化学技术有限公司 | System and method for recycling waste steam containing non-condensed steam, viscous liquid drops and small solid particles |
| CN113209807A (en) * | 2021-05-14 | 2021-08-06 | 新疆敦华石油技术股份有限公司 | High-temperature oil-containing waste steam recycling method |
| CN114477338A (en) * | 2021-12-31 | 2022-05-13 | 西安本清化学技术有限公司 | System and method for treating sewage by using waste heat of oilfield produced liquid |
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