CN106315499A - Device and method for phase change energy storage type oil gas recycling - Google Patents
Device and method for phase change energy storage type oil gas recycling Download PDFInfo
- Publication number
- CN106315499A CN106315499A CN201610965792.5A CN201610965792A CN106315499A CN 106315499 A CN106315499 A CN 106315499A CN 201610965792 A CN201610965792 A CN 201610965792A CN 106315499 A CN106315499 A CN 106315499A
- Authority
- CN
- China
- Prior art keywords
- oil
- low
- gas
- temperature level
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/42—Filling nozzles
- B67D7/54—Filling nozzles with means for preventing escape of liquid or vapour or for recovering escaped liquid or vapour
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/80—Arrangements of heating or cooling devices for liquids to be transferred
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G5/00—Recovery of liquid hydrocarbon mixtures from gases, e.g. natural gas
- C10G5/06—Recovery of liquid hydrocarbon mixtures from gases, e.g. natural gas by cooling or compressing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention discloses a device and method for phase change energy storage type oil gas recycling. The device comprises an oil gas recycling device and a refrigeration and cold accumulation device. The oil gas recycling device comprises a primary oil gas condenser and a secondary oil gas condenser which are connected in sequence. Oil gas is input through an inlet on one side of the primary oil gas condenser, is precooled through the primary oil gas condenser and the secondary oil gas condenser, returns into the primary oil gas condenser and is output through an outlet on one side of the primary oil gas condenser. The refrigeration and cold accumulation device comprises a high temperature grade compressor, an air condenser, a high temperature grade throttling device, an evaporative condenser and a low temperature grade throttling device. The high temperature grade compressor, the air condenser, the high temperature grade throttling device and the evaporative condenser are sequentially connected and form a first circulation loop, one end of the low temperature grade throttling device is connected with the evaporative condenser, and the other end of the low temperature grade throttling device is connected with the secondary oil gas condenser. According to the device, low temperature grade direct energy accumulation is adopted; compared with the prior art, the energy consumption is lower, and a refrigerating system is smaller.
Description
Technical field
The present invention relates to oil-gas recovery device field, particularly to a kind of phase-change energy storage type oil-gas recovery device and recovery side
Method.
Background technology
Gas station has all carried out the transformation of compulsory petroleum vapor recovery at present, and the gas station oil gas of state compulsion reclaims transformation and includes
Petroleum vapor recovery and secondary oil gas reclaim, and country does not forces to carry out three petroleum vapor recovery temporarily.
One time petroleum vapor recovery refers to the gas-liquid exchange between oil tank tank car and gas station's buried tank (buried tank).
Groove tank car when to the buried tank emptying of gas station (being primarily referred to as the gasoline that volatility is big), " empty " buried tank its
Not being empty in fact, the inside stores has expired oil gas, and the liquid oil in groove tank car flows into buried tank by action of gravity, in buried tank
Oil gas squeezed return-enclosure tank car, completes once to reclaim, and makes oil gas be unlikely to by breather valve and discharges in air.This is also people's customs
" the breathing greatly " claimed.
Filling the groove tank car of oil gas when carrying out charge of oil next time to oil depot, the liquid oil of oil depot loads groove tank car, gas quilt
Introduce after oil depot oil-gas recovery device collection process reaches environmental protection standard and discharge.
Wherein the oil-gas recovery device of a gas recovery system for oil and oil depot is all that state compulsion requires to be equipped with, but
During according to above flow process practical operation, the oil-gas recovery device of oil depot usually can not be recovered to oil from the oil gas of groove tank car, or
It is to be recovered to the oil than theoretical value much less.
Trace it to its cause, have following several possible:
1. the groove tank car of gas station is after emptying terminates, and whether some gas station operator need hand inspection groove tank car
Unsnatching, and open the top cover of groove tank car, in causing groove tank car, oil gas is released into air；
2. arrive gas station to transport the groove tank car of oil and may draw gasoline today, remove and change into drawing diesel oil tomorrow to oil depot, and oil depot
To the diesel oil trestle work of groove tank car charge of oil, (petroleum vapor recovery to diesel oil, country does not the most force the most not to fill oil-gas recovery device
Require), thus cause the petrol gas in groove tank car to run in vain into air；
3. groove tank car is not airtight tight, and gas is more easy to owing to the change of temperature causes the drastically change of volume, groove tank than liquid
Oil gas in car can make groove tank car internal pressure increase due to variations in temperature, a lot of groove tank car caping, detects the close of the positions such as mouth
Closing property is the most tight, and groove tank car hauls car load oil gas streetful and runs, and when next time to oil depot charge of oil, may the most significantly subtract by internal oil gas
Few.
4. a lot of groove tank cars also do not download the transformation of oil, and top charge of oil mouth is not of uniform size, and oil depot oil filling riser is not
Can groove tank car tank mouth be carried out the most airtight, cause the oil-gas recovery device of oil depot to be collected less than high-concentration oil vapor, affect oil depot
The yield of oil-gas recovery device.
For these reasons, if petroleum vapor recovery can directly be carried out when gas station's groove tank car emptying, high-concentration oil vapor is straight
Connect and become gasoline, on the one hand can increase gas station's benefit, be on the other hand conducive to environmental protection, change the oil gas in present groove tank car
At oil depot delay disposal far from the present situation reaching desired effect.
For this reason, it is necessary to first say down that secondary oil gas reclaims and three petroleum vapor recovery, secondary oil gas reclaims Ji Shi gas station and exists
When refueling a car, the oil gas in automotive oil tank and the oil gas volatilized that refuels, from the gas circuit pipe of petroleum vapor recovery nozzle, by vacuum
Pumping returns buried tank (buried tank).
The oil gas of fuel tank volatilization exists escapes, and must suck back some guarantee oil gas more and try one's best few when reclaiming oil gas
Escaping, thus have partial air and be drawn back into, its vapour-liquid ratio of national regulations is generally 1～1.2:1 (volume ratio).Owing to sucking back
Oil gas more than to automobile add oil volume, the pressure of buried tank can gradually rise, and height breather valve to a certain extent will be beaten
Using pungent drugs for dispersion and bitter drugs for purgation pressure, makes exhaust of oil in air, and when temperature step-down, in buried tank, gas volume reduces, pressure step-down, causes exhaling
Inhale valve and open suction air, balance the pressure of buried tank.This is also " the little breathing " being commonly called as.
So, buried tank, will be to environment when breathing out oil gas, now, is necessary for installing as oil depot oil gas
Reclaimer can make the equipment of oil gas qualified discharge like that rather than only carry out VLE.Such equipment and reclaiming
Journey is referred to as three petroleum vapor recovery of gas station.
Three petroleum vapor recovery of gas station are to solve buried tank owing to sucking gas when variations in temperature or secondary recovery
Emission problem when causing pressure to raise, general treating capacity is the least, between 1NM3/h～5NM3/h.
And during gas station's emptying, a general groove tank car volume is 30～60 cubic metres, whole emptying process is typically one
Completing about hour, the oil and gas content i.e. produced is about 30～60Nm3/h, if therefore oil gas returns as three times to gas station's emptying fashionable dress
Receive such equipment, need 30 to amplify about 30 times in other words and could meet the requirement that petroleum vapor recovery processes, it is clear that this is not
Economical, therefore, except every day can reach the gas station of more than 3 cars by emptying, some gas station owners, for economic benefit, install
Cross outside the oil-gas recovery processing device as the petroleum vapor recovery of three petroleum vapor recovery or oil depot, there is presently no people the most right
Petroleum vapor recovery during gas station's emptying is optimized design.
For the gas station in the whole nation more than 90%, its every day, or every couple of days only one of which groove tank car emptying, often
Secondary emptying about one hour, like this, as a example by the petroleum vapor recovery processing equipment filling a set for the treatment of capacity 50Nm3/h, market
Valency is about 30～600,000, even if emptying can reclaim the oil of about 200 yuan every time, the cycle of its cost recovery is also very
Long.The interval time every time used due to former oil-gas recovery device is the longest, and capacity utilization is low, and every 24～72 hours only
Within one hour, using, other times are the most idle, to this end, the method for my invention's this set energy-storage type petroleum vapor recovery process, can
To carry out slowly energy storage with 10～48 hours, little breathing can also be processed during accumulation of energy simultaneously and discharge, and discharge when groove tank car emptying
A large amount of energy process oil gas, to greatly reduce one-time investment cost, thus promote pushing away of gas station's emptying oil-gas recovery device
Extensively.
It is illustrated in figure 1 one time, gas station of the prior art petroleum vapor recovery (before loading onto energy-storage type petroleum vapor recovery) to connect
Schematic diagram, an existing petroleum vapor recovery main emptying process: during RTC unloading, close stop valve V1, open stop valve V3 and
Stop valve V5, liquid oil flows into buried oil storage tank through stop valve V5, and the oil gas in buried oil storage tank passes through stop valve
V3 returns oil truck.
The solution of the present invention is the improvement carried out existing oil-gas recovery device for the problems referred to above.
Summary of the invention
In order to overcome deficiency of the prior art, the present invention provides a kind of phase-change energy storage type oil-gas recovery device and recovery side
Method, have employed phase-changing energy-storing, i.e. uses high-temperature level accumulation of energy at evaporative condenser, or uses low temperature at two grades of oil-gas condensers
Level directly accumulation of energy, hinge structure, it is lower to invest less energy consumption, and refrigeration system is less, and floor space is less.
In order to reach foregoing invention purpose, solve the technical scheme that its technical problem used as follows:
The invention discloses a kind of phase-change energy storage type oil-gas recovery device, fill including device for recovering oil and gas and refrigeration and cold accumulation
Put, wherein:
Described device for recovering oil and gas includes the primary oil gas condenser that is sequentially connected with and two grades of oil-gas condensers, be used for so that
The oil gas import input from described primary oil gas condenser side, so cold by described primary oil gas condenser and two grades of oil gas
After condenser pre-cooling, return in described primary oil gas condenser and exported by the outlet of described primary oil gas condenser side；
Described cooling & cool-storing apparatus include high-temperature level compressor, air-cooled condenser, high-temperature level throttling arrangement, evaporative condenser and
Low-temperature level throttling arrangement, described high-temperature level compressor, air-cooled condenser, high-temperature level throttling arrangement, evaporative condenser are sequentially connected with also
Forming the first closed circuit, described low-temperature level throttling arrangement one end is connected with described evaporative condenser, the other end and described two grades
Oil-gas condenser connects.
In one embodiment, described cooling & cool-storing apparatus also includes that agent for storage of coldness, described agent for storage of coldness are positioned over described two grades of oil gas
In condenser, described agent for storage of coldness is that carbon dioxide, ammonia, the ammonia of mass percent concentration 25%～35%, mass percent are dense
The calcium chloride water of degree 29%～30% or the glycol water of mass percent concentration 57%～68%, with so that storing
The liquid-solid two-phase conversion temperature of cryogen is between-45～-85 DEG C.
Further, the most separate inside described two grades of oil-gas condensers it is provided with for the low-temperature level system that circulates
First low-temperature level tube side of cryogen, for being coated with the first shell side of described agent for storage of coldness and for the first outer shell side of the oil gas that circulates,
Described first low-temperature level tube side is coated with by described first shell side, and described first shell side is coated with by described first outer shell side.
Further, also include low-temperature level compressor, expansion vessel, expansion vessel throttling arrangement and one-way load releasing valve,
Wherein:
Described low-temperature level compressor, expansion vessel, expansion vessel throttling arrangement and one-way load releasing valve are sequentially connected formation
Second closed circuit；
Described low-temperature level compressor one end is connected with described one-way load releasing valve and evaporative condenser simultaneously, the while of the other end with
The first low-temperature level tube side in described expansion vessel throttling arrangement and two grades of oil-gas condensers is connected；
In described low-temperature level compressor, evaporative condenser, low-temperature level throttling arrangement and two grades of oil-gas condensers first is low
Temperature level tube side is sequentially connected formation the 3rd closed circuit.
Further, also include that defroster, described defroster are laid in outside the first of described two grades of oil-gas condensers
On shell side.
Preferably, described defroster is anti-explosion electric heater.
In another embodiment, described cooling & cool-storing apparatus also includes agent for storage of coldness, and it is cold that described agent for storage of coldness is positioned over described evaporation
In condenser, described agent for storage of coldness is carbon dioxide, ammonia, the ammonia of mass percent concentration 10%～20%, mass percent concentration
The calcium chloride water of 18%～27.5% or the glycol water of mass percent concentration 32%～52%, with so that storing
The liquid-solid two-phase conversion temperature of cryogen is between-15～-38 DEG C.
Further, be provided with from inside to outside inside described evaporative condenser separate for the high-temperature level refrigeration that circulates
First high-temperature level tube side of agent, for the second low-temperature level tube side of the low-temperature level cold-producing medium that circulates with for being coated with described agent for storage of coldness
Second shell side, described first high-temperature level tube side and the second low-temperature level tube side are coated with by described second shell side；
It is provided with separate for the low-temperature level cold-producing medium that circulates inside described two grades of oil-gas condensers from inside to outside
Three low-temperature level tube sides and the second housing journey for the oil gas that circulates, described 3rd low-temperature level tube side is wrapped by described second housing journey
Cover.
Further, also include low-temperature level compressor, expansion vessel, expansion vessel throttling arrangement and one-way load releasing valve,
Wherein:
Described low-temperature level compressor, expansion vessel, expansion vessel throttling arrangement and one-way load releasing valve are sequentially connected formation
Second closed circuit；
With the second low-temperature level pipe in described one-way load releasing valve and evaporative condenser while of described low-temperature level compressor one end
Cheng Xianglian, with the 3rd low-temperature level tube side phase in described expansion vessel throttling arrangement and two grades of oil-gas condensers while of the other end
Even；
In described low-temperature level compressor, evaporative condenser, low-temperature level throttling arrangement and two grades of oil-gas condensers the 3rd is low
Temperature level tube side is sequentially connected formation the 3rd closed circuit.
Further, also including a low-temperature level back-steam electromagnetic valve, described low-temperature level back-steam electromagnetic valve one end is simultaneously with described
Low-temperature level compressor is connected with expansion vessel throttling arrangement, and the other end is the lowest with the 3rd in described two grades of oil-gas condensers
Temperature level tube side is connected with expansion vessel.
Further, also including a defrosting electromagnetic valve, described defrosting electromagnetic valve one end fills with the throttling of described low-temperature level simultaneously
Put and be connected with the 3rd low-temperature level tube side in two grades of oil-gas condensers, the other end simultaneously with described low-temperature level compressor, unidirectional unload
Lotus valve is connected with evaporative condenser.
The present invention additionally discloses a kind of phase-change energy storage type oil-gas recovery method, comprises the following steps:
Step A1: the oil gas produced when oil truck is unloaded carries out pre-cooling by primary oil gas condenser so that temperature reduces
Extremely between-10～+10 °, and remove the most of moisture in oil gas simultaneously；
Step A2: the oil gas through the preliminary pre-cooling of primary oil gas condenser enters in two grades of oil-gas condensers, makes further
Temperature is reduced between-40～-80 °, the most of hydrocarbons in oil gas is condensed recoverys, the return of remaining cryogenic gas
Primary oil gas condenser, and carry out heat exchange with the high-temperature oil gas entered in primary oil gas condenser, return again to oil truck；
Step A3: the high-temperature high-pressure refrigerant that high-temperature level compressor is discharged is phase transformation condensation in air-cooled condenser, and by height
Temperature nuclear one-stage throttling device makes high-temperature high-pressure refrigerant become Low temperature low pressure liquid, and absorption low-temperature level refrigeration system in evaporative condenser
The condensation heat of system, makes low-temperature level cold-producing medium become the subcooled liquid of high pressure low temperature；
Step A4: the low-temperature level cold-producing medium of high pressure low temperature becomes Low temperature low pressure liquid through low-temperature level throttling arrangement again, and
In two grades of oil-gas condensers, absorb the heat of agent for storage of coldness, make agent for storage of coldness be maintained at the ultralow temperature of-45～-85 DEG C；
Step A5: the high-temperature high-pressure refrigerant of low-temperature level compressor discharge becomes high pressure low temperature in evaporative condenser mutually
Liquid, subsequently into low-temperature level throttling arrangement, the liquid of high pressure low temperature is throttled into the liquid of low pressure and lower temperature, then enters
Enter two grades of oil-gas condensers and absorb the heat of agent for storage of coldness, make agent for storage of coldness cooling phase transformation.
Preferably, the agent for storage of coldness in step A4 be carbon dioxide, ammonia, the ammonia of mass percent concentration 25%～35%,
The calcium chloride water of mass percent concentration 29%～30% or the ethylene glycol of mass percent concentration 57%～68% are water-soluble
Liquid so that the liquid-solid two-phase conversion temperature of agent for storage of coldness is between-45～-85 DEG C.
Further, further comprising the steps of:
Step A6: when two grades of oil-gas condensers need defrosting, high/low temperature level refrigeration system shuts down, and defroster opens
Dynamic, two grades of oil-gas condensers are carried out overall defrosting.
The invention also discloses a kind of phase-change energy storage type oil-gas recovery method, comprise the following steps:
Step B1: the oil gas produced when oil truck is unloaded carries out pre-cooling by primary oil gas condenser so that temperature reduces
Extremely between-10～+10 °, and remove the most of moisture in oil gas simultaneously；
Step B2: the oil gas through the preliminary pre-cooling of primary oil gas condenser enters in two grades of oil-gas condensers so that temperature
Being reduced between-40～-80 °, the most of hydrocarbons in oil gas is condensed recovery, and the gas of residue low temperature returns primary oil
Gas condenser, and carry out heat exchange with the high-temperature oil gas entered in primary oil gas condenser, return again to oil truck；
Step B3: the high-temperature high-pressure refrigerant that high-temperature level compressor is discharged is phase transformation condensation in air-cooled condenser, and by height
Temperature nuclear one-stage throttling device makes cold-producing medium become the liquid of low-temp low-pressure, and absorbs the heat of agent for storage of coldness in evaporative condenser, and by
Agent for storage of coldness is gradually made to undergo phase transition；
Step B4: the high-temperature high-pressure refrigerant that low-temperature level compressor is discharged, absorbs the cold of agent for storage of coldness in evaporative condenser
Amount phase transformation, becomes the liquid of high pressure low temperature, then through low-temperature level throttling arrangement, makes low-temperature level cold-producing medium become the liquid of low-temp low-pressure
Body, enters two grades of oil-gas condensers, and low-temperature level cold-producing medium absorbs the heat of oil gas release in two grades of oil-gas condensers and evaporates,
The steam becoming low-temp low-pressure returns to low-temperature level compressor.
Preferably, the agent for storage of coldness in step B3 be carbon dioxide, ammonia, the ammonia of mass percent concentration 10%～20%,
The calcium chloride water of mass percent concentration 18%～27.5% or the ethylene glycol water of mass percent concentration 32%～52%
Solution so that the liquid-solid two-phase conversion temperature of agent for storage of coldness is between-15～-38 DEG C.
Further, further comprising the steps of:
Step B5: when two grades of oil-gas condensers need defrosting, low-temperature level refrigeration machine starts, and defrosting electromagnetic valve is opened, with
Time low-temperature level throttling arrangement close or non-return, low-temperature level back-steam closed electromagnetic valve, hot fluorine enter two grades of oil-gas condensers, make two grades
Oil-gas condenser heats up, and the gas returned from two grades of oil-gas condensers or liquid enter back into expansion vessel, and passes through expansion vessel
Low-temperature level compressor is returned with throttling arrangement.
Due to the fact that the above technical scheme of employing, be allowed to compared with prior art, have the following advantages that and actively imitate
Really:
1, the phase-change energy storage type petroleum vapor recovery processing method in the present invention, can carry out slowly energy storage with 10～48 hours, stored
Little breathing can also be processed during energy discharge simultaneously, and discharge a large amount of energy process oil gas when groove tank car emptying, to greatly reduce
The one-time investment cost of oil-gas recovery device, thus promote the popularization of gas station's emptying oil-gas recovery device；
2, when tradition condensing of the prior art uses binary folding type cooling system, the instantaneous maximum unloaded need to be met
Value, its occupation area of equipment is big, generally 2～8 square metres；Can according to the system footprint area after this process flow scheme design
Control within 1.5 square metres, save this with regard to compact gas station's land used；Owing to have employed this accumulation of energy technique, refrigeration system
Can be designed to fairly small, so dramatically saves on manufacturing cost, create for this energy-saving environmental protection device of gas station's popularization and application
Advantage；
3, legacy equipment of the prior art is big due to power, is required for using the high voltage of 380V, according to 220V's
Mains voltage, electric current can be very big, but according to the system of this process flow scheme design, due to total power consumption typically 1～3KW with
In, be equivalent to the power of domestic air conditioning, therefore the civilian power supply of 220V can be used completely, simplify mounting condition；
4, the present invention is because have employed phase-changing energy-storing, and energy consumption is lower, and refrigeration system is less, and installed power is less, greatly
Save one-time investment cost.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, required use in embodiment being described below
Accompanying drawing be briefly described.It is clear that the accompanying drawing in describing below is only some embodiments of the present invention, for ability
From the point of view of field technique personnel, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.Attached
In figure:
Fig. 1 is one time, gas station of the prior art oil-gas recovery device connection diagram；
Fig. 2 is the emptying connection diagram after loading onto energy-storage type oil-gas recovery device in the present invention；
Fig. 3 is the structural representation of one one kinds of phase-change energy storage type oil-gas recovery devices of embodiment in the present invention；
Fig. 4 is the structural representation of 21 kinds of phase-change energy storage type oil-gas recovery devices of embodiment in the present invention；
Fig. 5 is the schematic flow sheet of 31 kinds of phase-change energy storage type oil-gas recovery methods of embodiment in the present invention；
Fig. 6 is the schematic flow sheet of 41 kinds of phase-change energy storage type oil-gas recovery methods of embodiment in the present invention.
[primary symbols explanation]
1-high-temperature level compressor；
The air-cooled condenser of 2-；
3-high-temperature level throttling arrangement；
4-evaporative condenser；
5-low-temperature level compressor；
6-defrosting electromagnetic valve；
7-low-temperature level throttling arrangement；
Bis-grades of oil-gas condensers of 8-；
9-low-temperature level back-steam electromagnetic valve；
10-expansion vessel；
11-expansion vessel throttling arrangement；
12-primary oil gas condenser；
13-agent for storage of coldness；
14-one-way load releasing valve；
15-defroster.
Detailed description of the invention
Below with reference to the accompanying drawing of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete description
And discussion, it is clear that a part of example of the only present invention as described herein, is not whole examples, based on the present invention
In embodiment, the every other enforcement that those of ordinary skill in the art are obtained on the premise of not making creative work
Example, broadly falls into protection scope of the present invention.
As in figure 2 it is shown, load onto the main emptying process after energy-storage type energy-storage type gas recovery system for oil: during RTC unloading,
Closing stop valve V1, open stop valve V3 and stop valve V5, liquid oil flows into buried oil storage tank through stop valve V5, buried
After oil gas in formula oil storage tank first passes through stop valve V2 entrance energy-storage type device for recovering oil and gas, the tail gas after process passes through stop valve
V3 returns oil truck.The liquid reclaimed periodically puts into buried oil storage tank by stop valve V4.
Embodiment one
As it is shown on figure 3, the invention discloses a kind of phase-change energy storage type oil-gas recovery device, including device for recovering oil and gas and system
Cold cold-storage device, wherein:
Described device for recovering oil and gas includes the primary oil gas condenser 12 that is sequentially connected with and two grades of oil-gas condensers 8, is used for
Make the oil gas import input from described primary oil gas condenser 12 side, and then by described primary oil gas condenser 12 and two
After level oil-gas condenser 8 pre-cooling, return in described primary oil gas condenser 12 and by described primary oil gas condenser 12 side
Outlet output；
Described cooling & cool-storing apparatus includes high-temperature level compressor 1, air-cooled condenser 2, high-temperature level throttling arrangement 3, evaporative condenser
Device 4 and low-temperature level throttling arrangement 7, described high-temperature level compressor 1, air-cooled condenser 2, high-temperature level throttling arrangement 3, evaporative condenser 4
Being sequentially connected with and formed the first closed circuit, described low-temperature level throttling arrangement 7 one end is connected with described evaporative condenser 4, another
End is connected with described two grades of oil-gas condensers 8.
In the present embodiment, described cooling & cool-storing apparatus also includes the agent for storage of coldness 13 of liquid-solid two-phase transformant, described agent for storage of coldness
13 are positioned in described two grades of oil-gas condensers 8.Preferably, described agent for storage of coldness 13 is carbon dioxide, ammonia, mass percent concentration
Ammonia, the calcium chloride water of mass percent concentration 29%～30% or the mass percent concentration 57% of 25%～35%～
The glycol water of 68%.
Generally agent for storage of coldness 13 selects to be that the material of liquid is even more ideal under room temperature, as calcium chloride water, ammonia,
Ethylene glycol solutions etc., the liquid-solid two-phase conversion temperature point of agent for storage of coldness 13 is between-45～-85 DEG C.But when liquid-solid two-phase converts temperature
It is not recommended that use calcium chloride water when degree is less than-55 DEG C, it is not recommended that use glycol water during less than-70 DEG C.
Further, described two grades of oil-gas condensers 8 inside is the most separate is provided with for the low-temperature level that circulates
First low-temperature level tube side (not shown) of cold-producing medium, for being coated with first shell side (not shown) of described agent for storage of coldness 13 and being used for flowing
First outer shell side (not shown) of logical oil gas, described first low-temperature level tube side is coated with by described first shell side, described first shell
Journey is coated with by described first outer shell side.
With further reference to Fig. 3, described phase-change energy storage type oil-gas recovery device also includes low-temperature level compressor 5, expansion vessel
10, expansion vessel throttling arrangement 11 and one-way load releasing valve 14, wherein:
Described low-temperature level compressor 5, expansion vessel 10, expansion vessel throttling arrangement 11 and one-way load releasing valve 14 phase successively
Even form the second closed circuit；
Described low-temperature level compressor 5 one end is connected with described one-way load releasing valve 14 and evaporative condenser 4 simultaneously, and the other end is same
Time be connected with the first low-temperature level tube side in described expansion vessel throttling arrangement 11 and two grades of oil-gas condensers 8；
In described low-temperature level compressor 5, evaporative condenser 4, low-temperature level throttling arrangement 7 and two grades of oil-gas condensers 8
One low-temperature level tube side is sequentially connected formation the 3rd closed circuit.
With continued reference to Fig. 3, described phase-change energy storage type oil-gas recovery device also includes defroster 15, described defroster 15
It is laid on the first outer shell side of described two grades of oil-gas condensers 8.In the present embodiment, described defroster 15 is preferably anti-explosion electric
Heater, uses the mode of electric heater defrosting to defrost.
Embodiment two
As shown in Figure 4, the present invention additionally discloses a kind of phase-change energy storage type oil-gas recovery device, including device for recovering oil and gas
And cooling & cool-storing apparatus, wherein:
Described device for recovering oil and gas includes the primary oil gas condenser 12 that is sequentially connected with and two grades of oil-gas condensers 8, is used for
Make the oil gas import input from described primary oil gas condenser 12 side, and then by described primary oil gas condenser 12 and two
After level oil-gas condenser 8 pre-cooling, return in described primary oil gas condenser 12 and by described primary oil gas condenser 12 side
Outlet output；
Described cooling & cool-storing apparatus includes high-temperature level compressor 1, air-cooled condenser 2, high-temperature level throttling arrangement 3, evaporative condenser
Device 4 and low-temperature level throttling arrangement 7, described high-temperature level compressor 1, air-cooled condenser 2, high-temperature level throttling arrangement 3, evaporative condenser 4
Being sequentially connected with and formed the first closed circuit, described low-temperature level throttling arrangement 7 one end is connected with described evaporative condenser 4, another
End is connected with described two grades of oil-gas condensers 8.
In the present embodiment, described cooling & cool-storing apparatus also includes the agent for storage of coldness 13 of liquid-solid two-phase transformant, described agent for storage of coldness
13 are positioned in described evaporative condenser 4.Preferably, described agent for storage of coldness 13 is carbon dioxide, ammonia, mass percent concentration 10%
～the ammonia of 20%, the calcium chloride water of mass percent concentration 18%～27.5% or mass percent concentration 32%～
The glycol water of 52%；Generally agent for storage of coldness 13 selects to be that the material of liquid is even more ideal, such as calcium chloride under room temperature
Aqueous solution, ammonia, ethylene glycol solution etc., the liquid-solid two-phase conversion temperature point of agent for storage of coldness 13 is between-15～-38 DEG C.But work as liquid
It is not recommended that use calcium chloride water when Gu two phase transition temperatures are less than-55 DEG C, it is not recommended that make spent glycol water during less than-70 DEG C
Solution.
Further, described evaporative condenser 4 inside is the most separate is provided with for the high-temperature level refrigeration that circulates
First high-temperature level tube side (not shown) of agent, for the second low-temperature level tube side (not shown) of the low-temperature level cold-producing medium that circulates be used for
It is coated with second shell side (not shown) of described agent for storage of coldness 13, described first high-temperature level tube side and the second low-temperature level tube side by described
One shell side is coated with.Described two grades of oil-gas condensers 8 are internal be provided with from inside to outside separate for the low-temperature level system that circulates
Cryogen the 3rd low-temperature level tube side and the second housing journey for the oil gas that circulates, described 3rd low-temperature level tube side is by described second housing
Journey is coated with.
With further reference to Fig. 4, described phase-change energy storage type oil-gas recovery device also includes low-temperature level compressor 5, expansion vessel
10, expansion vessel throttling arrangement 11 and one-way load releasing valve 14, wherein:
Described low-temperature level compressor 5, expansion vessel 10, expansion vessel throttling arrangement 11 and one-way load releasing valve 14 phase successively
Even form the second closed circuit；
Described low-temperature level compressor 5 one end is connected with described one-way load releasing valve 14 and evaporative condenser 4 simultaneously, and the other end is same
Time be connected with the 3rd low-temperature level tube side in described expansion vessel throttling arrangement 11 and two grades of oil-gas condensers 8；
In described low-temperature level compressor 5, evaporative condenser 4, low-temperature level throttling arrangement 7 and two grades of oil-gas condensers 8
Three low-temperature level tube sides are sequentially connected formation the 3rd closed circuit.
With continued reference to Fig. 4, described phase-change energy storage type oil-gas recovery device also includes a low-temperature level back-steam electromagnetic valve 9, described
Low-temperature level back-steam electromagnetic valve 9 one end is connected with described low-temperature level compressor 5 and expansion vessel throttling arrangement 11 simultaneously, the other end
It is connected with the 3rd low-temperature level tube side and the expansion vessel 10 of described two grades of oil-gas condensers 8 simultaneously.
Further, also including a defrosting electromagnetic valve 6, described defrosting electromagnetic valve 6 one end throttles with described low-temperature level simultaneously
Device 7 is connected with the 3rd low-temperature level tube side of two grades of oil-gas condensers 8, the other end simultaneously with described low-temperature level compressor 5, unidirectional
Unloader 14 is connected with evaporative condenser 4.
Embodiment three
As it is shown in figure 5, the present invention additionally discloses a kind of phase-change energy storage type oil-gas recovery method, comprise the following steps:
Step A1: the oil gas produced when oil truck is unloaded carries out pre-cooling by primary oil gas condenser 12 so that temperature drops
Between as little as-10～+10 °, and remove the most of moisture in oil gas simultaneously；
Step A2: the oil gas through the preliminary pre-cooling of primary oil gas condenser 12 enters in two grades of oil-gas condensers 8, further
Temperature is reduced between-40～-80 °, and the most of hydrocarbons in oil gas is condensed recovery, and remaining cryogenic gas returns
Return primary oil gas condenser 12, and carry out heat exchange with the high-temperature oil gas entered in primary oil gas condenser 12, return again to oil tank
Car；
Step A3: the high-temperature high-pressure refrigerant that high-temperature level compressor 1 is discharged is phase transformation condensation in air-cooled condenser 2, and passes through
High-temperature level throttling arrangement 3 makes high-temperature high-pressure refrigerant become Low temperature low pressure liquid, and absorbs low-temperature level system in evaporative condenser 4
The condensation heat of cooling system, makes low-temperature level cold-producing medium become the subcooled liquid of high pressure low temperature；
Step A4: the low-temperature level cold-producing medium of high pressure low temperature becomes Low temperature low pressure liquid through low-temperature level throttling arrangement 7 again, and
In two grades of oil-gas condensers 8, absorb the heat of agent for storage of coldness 13, make agent for storage of coldness 13 be maintained at the ultralow temperature of-45～-85 DEG C；Preferably
, the agent for storage of coldness 13 in step A4 can be carbon dioxide, ammonia, the ammonia of mass percent concentration 25%～35%, percent mass
The calcium chloride water of specific concentration 29%～30% or the glycol water etc. of mass percent concentration 57%～68%, its choosing
Select principle and be to ensure that its liquid-solid two-phase conversion temperature is between-45～-85 DEG C；
Step A5: the high-temperature high-pressure refrigerant of low-temperature level compressor 5 discharge becomes high pressure low temperature in evaporative condenser 4 mutually
Liquid, subsequently into low-temperature level throttling arrangement 7, the liquid of high pressure low temperature is throttled into the liquid of low pressure and lower temperature, so
Two grades of oil-gas condensers 8 of rear entrance absorb the heat of agent for storage of coldness 13, make agent for storage of coldness 13 lower the temperature phase transformation.
In the present embodiment, cool-storage time determines according to gas station's situation of unloading, it is necessary to control between the time unloaded for twice
Every interior, and leave certain surplus, typically can select between 6～30 hours.During cold-storage, low-temperature level refrigeration system does not start,
When only producing oil gas when unloading, low-temperature level refrigeration system just starts.
With further reference to Fig. 5, further comprising the steps of:
Step A6: when two grades of oil-gas condensers 8 need defrosting, high/low temperature level refrigeration system shuts down, defroster
15 start, and two grades of oil-gas condensers 8 carry out overall defrosting.
Embodiment four
As shown in Figure 6, the invention also discloses a kind of phase-change energy storage type oil-gas recovery method, comprise the following steps:
Step B1: the oil gas produced when oil truck is unloaded carries out pre-cooling by primary oil gas condenser 12 so that temperature drops
Between as little as-10～+10 °, and remove the most of moisture in oil gas simultaneously；
Step B2: the oil gas through the preliminary pre-cooling of primary oil gas condenser 12 enters in two grades of oil-gas condensers 8 so that temperature
Degree is reduced between-40～-80 °, and the most of hydrocarbons in oil gas is condensed recoverys, the gas return one-level of residue low temperature
Oil-gas condenser 12, and carry out heat exchange with the high-temperature oil gas entered in primary oil gas condenser 12, return again to oil truck；
Step B3: the high-temperature high-pressure refrigerant that high-temperature level compressor 1 is discharged is phase transformation condensation in air-cooled condenser 2, and passes through
High-temperature level throttling arrangement 3 makes cold-producing medium become the liquid of low-temp low-pressure, and absorbs the heat of agent for storage of coldness 13 in evaporative condenser 4
Amount, and gradually make agent for storage of coldness 13 undergo phase transition；Preferably, the agent for storage of coldness 13 in step B3 is carbon dioxide, ammonia, mass percent
The ammonia of concentration 10%～20%, the calcium chloride water of mass percent concentration 18%～27.5% or mass percent concentration
The glycol water of 32%～52%, its selection principle is to ensure that its liquid-solid two-phase conversion temperature is between-15～-38 DEG C；
Step B4: the high-temperature high-pressure refrigerant that low-temperature level compressor 5 is discharged, absorbs agent for storage of coldness 13 in evaporative condenser 4
Cold phase transformation, become the liquid of high pressure low temperature, then through low-temperature level throttling arrangement 7, make low-temperature level cold-producing medium become low temperature low
The liquid of pressure, enters two grades of oil-gas condensers 8, and low-temperature level cold-producing medium absorbs the heat of oil gas release in two grades of oil-gas condensers 8
Measuring and evaporate, the steam becoming low-temp low-pressure returns to low-temperature level compressor 5.
In the present embodiment, cool-storage time determines according to gas station's situation of unloading, it is necessary to control between the time unloaded for twice
Every interior, and leave certain surplus, typically can select between 6～30 hours.During cold-storage, low-temperature level refrigeration system does not start,
When only producing oil gas when unloading, low-temperature level refrigeration system just starts.
With further reference to Fig. 6, further comprising the steps of:
Step B5: when two grades of oil-gas condensers 8 need defrosting, low-temperature level refrigeration machine starts, and defrosting electromagnetic valve 6 is opened,
Low-temperature level throttling arrangement 7 cuts out or non-return simultaneously, and low-temperature level back-steam electromagnetic valve 9 cuts out, and hot fluorine enters two grades of oil-gas condensers 8,
Making two grades of oil-gas condensers 8 heat up, the gas returned from two grades of oil-gas condensers 8 or liquid enter back into expansion vessel 10, and lead to
Cross expansion vessel throttling arrangement 11 and return low-temperature level compressor 5.
The present embodiment is owing to have employed this accumulation of energy technique, and high-temperature level refrigeration system can be designed to fairly small, very the biggest
Save manufacturing cost, create advantage for gas station's this energy-saving environmental protection device of popularization and application.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, the change that can readily occur in or replacement,
All should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is as the criterion.
Claims (17)
1. a phase-change energy storage type oil-gas recovery device, it is characterised in that include device for recovering oil and gas and cooling & cool-storing apparatus, its
In:
Described device for recovering oil and gas includes the primary oil gas condenser that is sequentially connected with and two grades of oil-gas condensers, is used for so that oil gas
Import input from described primary oil gas condenser side, and then by described primary oil gas condenser and two grades of oil-gas condensers
After pre-cooling, return in described primary oil gas condenser and exported by the outlet of described primary oil gas condenser side；
Described cooling & cool-storing apparatus includes high-temperature level compressor, air-cooled condenser, high-temperature level throttling arrangement, evaporative condenser and low temperature
Nuclear one-stage throttling device, described high-temperature level compressor, air-cooled condenser, high-temperature level throttling arrangement, evaporative condenser are sequentially connected with and are formed
First closed circuit, described low-temperature level throttling arrangement one end is connected with described evaporative condenser, the other end and described two grades of oil gas
Condenser connects.
A kind of phase-change energy storage type oil-gas recovery device the most according to claim 1, it is characterised in that described refrigeration and cold accumulation fills
Putting and also include agent for storage of coldness, described agent for storage of coldness is positioned in described two grades of oil-gas condensers, described agent for storage of coldness be carbon dioxide, ammonia,
The ammonia of mass percent concentration 25%～35%, the calcium chloride water of mass percent concentration 29%～30% or quality hundred
The glycol water of proportion by subtraction concentration 57%～68%, with so that the liquid-solid two-phase conversion temperature of agent for storage of coldness is-45～-85 DEG C
Between.
A kind of phase-change energy storage type oil-gas recovery device the most according to claim 2, it is characterised in that described two grades of oil gas are cold
Inside condenser the most separate be provided with for the low-temperature level cold-producing medium that circulates the first low-temperature level tube side, for being coated with
Stating the first shell side of agent for storage of coldness and for the first outer shell side of the oil gas that circulates, described first low-temperature level tube side is by described first shell side
Being coated with, described first shell side is coated with by described first outer shell side.
A kind of phase-change energy storage type oil-gas recovery device the most according to claim 3, it is characterised in that also include low-temperature level pressure
Contracting machine, expansion vessel, expansion vessel throttling arrangement and one-way load releasing valve, wherein:
Described low-temperature level compressor, expansion vessel, expansion vessel throttling arrangement and one-way load releasing valve are sequentially connected formation second
Closed circuit；
Described low-temperature level compressor one end is connected with described one-way load releasing valve and evaporative condenser simultaneously, and the other end is simultaneously with described
The first low-temperature level tube side in expansion vessel throttling arrangement and two grades of oil-gas condensers is connected；
The first low-temperature level in described low-temperature level compressor, evaporative condenser, low-temperature level throttling arrangement and two grades of oil-gas condensers
Tube side is sequentially connected formation the 3rd closed circuit.
A kind of phase-change energy storage type oil-gas recovery device the most according to claim 3, it is characterised in that also include defrosting dress
Putting, described defroster is laid on the first outer shell side of described two grades of oil-gas condensers.
A kind of phase-change energy storage type oil-gas recovery device the most according to claim 5, it is characterised in that described defroster is
Anti-explosion electric heater.
A kind of phase-change energy storage type oil-gas recovery device the most according to claim 1, it is characterised in that described refrigeration and cold accumulation fills
Putting and also include agent for storage of coldness, described agent for storage of coldness is positioned in described evaporative condenser, and described agent for storage of coldness is carbon dioxide, ammonia, quality
The ammonia of percent concentration 10%～20%, the calcium chloride water of mass percent concentration 18%～27.5% or percent mass
The glycol water of specific concentration 32%～52%, with so that agent for storage of coldness liquid-solid two-phase conversion temperature-15～-38 DEG C it
Between.
A kind of phase-change energy storage type oil-gas recovery device the most according to claim 7, it is characterised in that described evaporative condenser
Internal it is provided with separate the first high-temperature level tube side for high-temperature level refrigeration agent of circulating from inside to outside, for the low temperature that circulates
Second low-temperature level tube side of level cold-producing medium and for being coated with the second shell side of described agent for storage of coldness, described first high-temperature level tube side and the
Two low-temperature level tube sides are coated with by described second shell side；
It is provided with separate low for the low-temperature level cold-producing medium the 3rd that circulates inside described two grades of oil-gas condensers from inside to outside
Temperature level tube side and the second housing journey for the oil gas that circulates, described 3rd low-temperature level tube side is coated with by described second housing journey.
A kind of phase-change energy storage type oil-gas recovery device the most according to claim 8, it is characterised in that also include low-temperature level pressure
Contracting machine, expansion vessel, expansion vessel throttling arrangement and one-way load releasing valve, wherein:
Described low-temperature level compressor, expansion vessel, expansion vessel throttling arrangement and one-way load releasing valve are sequentially connected formation second
Closed circuit；
With the second low-temperature level tube side phase in described one-way load releasing valve and evaporative condenser while of described low-temperature level compressor one end
Even, the other end is connected with the 3rd low-temperature level tube side in described expansion vessel throttling arrangement and two grades of oil-gas condensers simultaneously；
The 3rd low-temperature level in described low-temperature level compressor, evaporative condenser, low-temperature level throttling arrangement and two grades of oil-gas condensers
Tube side is sequentially connected formation the 3rd closed circuit.
A kind of phase-change energy storage type oil-gas recovery device the most according to claim 9, it is characterised in that also include a low temperature
Level back-steam electromagnetic valve, described low-temperature level back-steam electromagnetic valve one end throttles with described low-temperature level compressor and expansion vessel simultaneously and fills
Putting connected, the other end is connected with the 3rd low-temperature level tube side in described two grades of oil-gas condensers and expansion vessel simultaneously.
11. a kind of phase-change energy storage type oil-gas recovery devices according to claim 9, it is characterised in that also include a defrosting
Electromagnetic valve, with the 3rd low temperature in described low-temperature level throttling arrangement and two grades of oil-gas condensers while of described defrosting electromagnetic valve one end
Level tube side is connected, and the other end is connected with described low-temperature level compressor, one-way load releasing valve and evaporative condenser simultaneously.
12. 1 kinds of phase-change energy storage type oil-gas recovery methods, it is characterised in that comprise the following steps:
Step A1: the oil gas produced when oil truck is unloaded carries out pre-cooling by primary oil gas condenser so that temperature is reduced to-10
～between+10 °, and remove the most of moisture in oil gas simultaneously；
Step A2: the oil gas through the preliminary pre-cooling of primary oil gas condenser enters in two grades of oil-gas condensers, further such that warm
Degree is reduced between-40～-80 °, and the most of hydrocarbons in oil gas is condensed recoverys, remaining cryogenic gas return one-level
Oil-gas condenser, and carry out heat exchange with the high-temperature oil gas entered in primary oil gas condenser, return again to oil truck；
Step A3: the high-temperature high-pressure refrigerant that high-temperature level compressor is discharged is phase transformation condensation in air-cooled condenser, and passes through high-temperature level
Throttling arrangement makes high-temperature high-pressure refrigerant become Low temperature low pressure liquid, and absorbs low-temperature level refrigeration system in evaporative condenser
Condensation heat, makes low-temperature level cold-producing medium become the subcooled liquid of high pressure low temperature；
Step A4: the low-temperature level cold-producing medium of high pressure low temperature becomes Low temperature low pressure liquid through low-temperature level throttling arrangement again, and two
Level oil-gas condenser absorbs the heat of agent for storage of coldness, makes agent for storage of coldness be maintained at the ultralow temperature of-45～-85 DEG C；
Step A5: the high-temperature high-pressure refrigerant of low-temperature level compressor discharge becomes the liquid of high pressure low temperature in evaporative condenser mutually
Body, subsequently into low-temperature level throttling arrangement, the liquid of high pressure low temperature is throttled into the liquid of low pressure and lower temperature, subsequently into
Two grades of oil-gas condensers absorb the heat of agent for storage of coldness, make agent for storage of coldness cooling phase transformation.
13. a kind of phase-change energy storage type oil-gas recovery methods according to claim 12, it is characterised in that the storage in step A4
Cryogen is carbon dioxide, ammonia, the ammonia of mass percent concentration 25%～35%, the chlorine of mass percent concentration 29%～30%
Change calcium aqueous solution or the glycol water of mass percent concentration 57%～68% so that the liquid-solid two-phase of agent for storage of coldness converts temperature
Degree is between-45～-85 DEG C.
14. a kind of phase-change energy storage type oil-gas recovery methods according to claim 12, it is characterised in that also include following step
Rapid:
Step A6: when two grades of oil-gas condensers need defrosting, high/low temperature level refrigeration system shuts down, and defroster starts,
Two grades of oil-gas condensers are carried out overall defrosting.
15. 1 kinds of phase-change energy storage type oil-gas recovery methods, it is characterised in that comprise the following steps:
Step B1: the oil gas produced when oil truck is unloaded carries out pre-cooling by primary oil gas condenser so that temperature is reduced to-10
～between+10 °, and remove the most of moisture in oil gas simultaneously；
Step B2: the oil gas through the preliminary pre-cooling of primary oil gas condenser enters in two grades of oil-gas condensers so that temperature reduces
To between-40～-80 °, the most of hydrocarbons in oil gas is condensed recoverys, the gas return primary oil air cooling of residue low temperature
Condenser, and carry out heat exchange with the high-temperature oil gas entered in primary oil gas condenser, return again to oil truck；
Step B3: the high-temperature high-pressure refrigerant that high-temperature level compressor is discharged is phase transformation condensation in air-cooled condenser, and passes through high-temperature level
Throttling arrangement makes cold-producing medium become the liquid of low-temp low-pressure, and absorbs the heat of agent for storage of coldness in evaporative condenser, and gradually makes
Agent for storage of coldness undergoes phase transition；
Step B4: the high-temperature high-pressure refrigerant that low-temperature level compressor is discharged, absorbs the cold phase of agent for storage of coldness in evaporative condenser
Become, become the liquid of high pressure low temperature, then through low-temperature level throttling arrangement, make low-temperature level cold-producing medium become the liquid of low-temp low-pressure,
Entering two grades of oil-gas condensers, low-temperature level cold-producing medium absorbs the heat of oil gas release in two grades of oil-gas condensers and evaporates, and becomes
The steam becoming low-temp low-pressure returns to low-temperature level compressor.
16. a kind of phase-change energy storage type oil-gas recovery methods according to claim 15, it is characterised in that the storage in step B3
Cryogen is carbon dioxide, ammonia, the ammonia of mass percent concentration 10%～20%, mass percent concentration 18%～27.5%
Calcium chloride water or the glycol water of mass percent concentration 32%～52% so that the liquid-solid two-phase of agent for storage of coldness converts
Temperature is between-15～-38 DEG C.
17. a kind of phase-change energy storage type oil-gas recovery methods according to claim 15, it is characterised in that also include following step
Rapid:
Step B5: when two grades of oil-gas condensers need defrosting, low-temperature level refrigeration machine starts, and defrosting electromagnetic valve is opened, the lowest
Temperature nuclear one-stage throttling device is closed or non-return, low-temperature level back-steam closed electromagnetic valve, and hot fluorine enters two grades of oil-gas condensers, makes two grades of oil gas
Condenser heats up, and the gas returned from two grades of oil-gas condensers or liquid enter back into expansion vessel, and are saved by expansion vessel
Stream device returns low-temperature level compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610965792.5A CN106315499B (en) | 2016-10-28 | 2016-10-28 | A kind of phase-change energy storage type oil-gas recovery device and recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610965792.5A CN106315499B (en) | 2016-10-28 | 2016-10-28 | A kind of phase-change energy storage type oil-gas recovery device and recovery method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106315499A true CN106315499A (en) | 2017-01-11 |
| CN106315499B CN106315499B (en) | 2017-09-19 |
Family
ID=57816036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610965792.5A Active CN106315499B (en) | 2016-10-28 | 2016-10-28 | A kind of phase-change energy storage type oil-gas recovery device and recovery method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106315499B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6041620A (en) * | 1998-12-30 | 2000-03-28 | Praxair Technology, Inc. | Cryogenic industrial gas liquefaction with hybrid refrigeration generation |
| CN101240183A (en) * | 2007-02-09 | 2008-08-13 | 中国石油化工股份有限公司 | Oil gas reclaiming method and device |
| CN101852504A (en) * | 2010-05-14 | 2010-10-06 | 东南大学 | Double-stage cascade refrigeration method used for oil-gas recovery |
| CN102706024A (en) * | 2012-06-04 | 2012-10-03 | 上海森鑫新能源科技有限公司 | Stepped refrigerating system and method for recovering oil gas and defrosting method |
| KR101473214B1 (en) * | 2014-06-10 | 2014-12-16 | (주)21하이테크 | Oil gas recovery apparatus |
| CN204219994U (en) * | 2014-11-04 | 2015-03-25 | 中国石油化工股份有限公司 | The cold storage absorption process oil-gas recovery processing device of absorption-low temperature |
-
2016
- 2016-10-28 CN CN201610965792.5A patent/CN106315499B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6041620A (en) * | 1998-12-30 | 2000-03-28 | Praxair Technology, Inc. | Cryogenic industrial gas liquefaction with hybrid refrigeration generation |
| CN101240183A (en) * | 2007-02-09 | 2008-08-13 | 中国石油化工股份有限公司 | Oil gas reclaiming method and device |
| CN101852504A (en) * | 2010-05-14 | 2010-10-06 | 东南大学 | Double-stage cascade refrigeration method used for oil-gas recovery |
| CN102706024A (en) * | 2012-06-04 | 2012-10-03 | 上海森鑫新能源科技有限公司 | Stepped refrigerating system and method for recovering oil gas and defrosting method |
| KR101473214B1 (en) * | 2014-06-10 | 2014-12-16 | (주)21하이테크 | Oil gas recovery apparatus |
| CN204219994U (en) * | 2014-11-04 | 2015-03-25 | 中国石油化工股份有限公司 | The cold storage absorption process oil-gas recovery processing device of absorption-low temperature |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106315499B (en) | 2017-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104961109B (en) | A kind of cryonetic wind tunnel nitrogen gas recovering apparatus and recovery method | |
| CN201646314U (en) | Liquefied natural gas automobile air conditioning system | |
| CN102706024B (en) | Stepped refrigerating system and method for recovering oil gas and defrosting method | |
| CN106621439B (en) | A kind of two-stage phase-changing energy-storing gas recovery system for oil and method | |
| CN206142230U (en) | Filling station is with phase transition energy storage vapor recovery system equipment | |
| CN206138775U (en) | Ladder facies change model energy storage vapor recovery system equipment | |
| CN106310699B (en) | A kind of gas recovery system for oil and method of asymmetric double tank adsorption desorptions | |
| CN104110574B (en) | A kind of cryogenic gas condensate recovery system and method thereof | |
| CN205316815U (en) | High -efficient liquefaction recovery unit of natural gas | |
| CN1837671A (en) | An unloading method for liquid ammonia-transporting tank lorry | |
| CN110171796A (en) | A kind of gas recovery system for oil three times | |
| CN102423997A (en) | Automobile air conditioning system realizing supercooling through latent heat of vaporization of liquefied natural gas (LNG) vaporization | |
| CN106315499B (en) | A kind of phase-change energy storage type oil-gas recovery device and recovery method | |
| CN108955014A (en) | A kind of closed vacuum refrigeration and cold accumulation device and method | |
| CN202756905U (en) | Evaporated-gas recovery device for carbon dioxide storage tank | |
| CN104132239B (en) | A kind of cryogenic gas condensation cycle system and method | |
| CN106195617A (en) | A kind of BOG retracting device | |
| CN207687667U (en) | A kind of differential LNG loading systems | |
| CN210952001U (en) | Refrigerating system for oil gas liquefaction treatment | |
| CN206492360U (en) | A kind of petroleum vapor recovery adsorption condensing device | |
| CN208927629U (en) | A kind of condensation adsorption formula oil-gas recovery processing device | |
| CN214597312U (en) | Oil gas recovery processing system | |
| CN205842203U (en) | Liquid nitrogen automatic recycling device in a kind of neon helium separation process | |
| CN205825584U (en) | A kind of intelligentized petroleum benzin conversion equipment | |
| CN108043062A (en) | A kind of processing system of storage tank breathing discharge escaping gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |