CN206138775U - Ladder facies change model energy storage vapor recovery system equipment - Google Patents
Ladder facies change model energy storage vapor recovery system equipment Download PDFInfo
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- CN206138775U CN206138775U CN201621189754.7U CN201621189754U CN206138775U CN 206138775 U CN206138775 U CN 206138775U CN 201621189754 U CN201621189754 U CN 201621189754U CN 206138775 U CN206138775 U CN 206138775U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model discloses a ladder facies change model energy storage vapor recovery system equipment, including vapor recovery system device and refrigeration and cold -storage device, the vapor recovery system device is including the one -level oil and gas condenser, second grade oil and gas condenser and the tertiary oil and gas condenser that connect gradually for make oil gas from one -level oil and gas condenser one side import input, and after looping through one -level oil and gas condenser, second grade oil and gas condenser and tertiary oil and gas condenser precooling, return among the one -level oil and gas condenser and through one side export output of one -level oil and gas condenser, refrigeration and cold -storage device includes high temperature level compressor, air condenser and high temperature level throttling arrangement, and high temperature level compressor, air condenser, high temperature level throttling arrangement and second grade oil and gas condenser connect gradually and form a circulation circuit. The utility model discloses a two -stage energy storage, the cold -storage system that has increased second grade oil and gas condenser makes oil gas form cascaded condensation, reduces tertiary oil and gas condenser's load, and the whole power of equipment is littleer, more economizes than the scheme energy of single -stage cold -storage, and refrigerating system is littleer.
Description
Technical field
This utility model is related to oil-gas recovery device field, and more particularly to a kind of ladder phase-change type accumulation of energy petroleum vapor recovery sets
It is standby.
Background technology
At present gas station has all carried out compulsory petroleum vapor recovery transformation, and the gas station oil gas of state compulsion reclaim transformation to be included
Petroleum vapor recovery and secondary oil gas are reclaimed, and country temporarily does not force to carry out three petroleum vapor recoveries.
Petroleum vapor recovery refers to that the gas-liquid between oil tank tank car and gas station's buried tank (buried tank) is exchanged.
Groove tank car (is primarily referred to as the big gasoline of volatility) in the buried tank emptying to gas station, " empty " buried tank its
It is not in fact empty, oil gas has been expired in the inside storage, and the liquid oil in groove tank car flows into buried tank by action of gravity, in buried tank
The squeezed return-enclosure tank car of oil gas, completes once to reclaim, and makes oil gas be unlikely to be discharged toward air by breather valve.This is also people's custom
" the big breathing " for claiming.
The groove tank car of oil gas is filled when charge of oil is carried out next time to oil depot, the liquid oil of oil depot loads groove tank car, gas quilt
Introduce the collection of oil depot oil-gas recovery device and process to reach and discharge after environmental protection standard.
The oil-gas recovery device of wherein one time gas recovery system for oil and oil depot is all that state compulsion requirement is equipped with, but
According to during 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 can only to be recovered to the oil than theoretical value much less.
Trace it to its cause, there are following several possibility：
1. after emptying terminates, whether some gas station operator need hand inspection groove tank car to the groove tank car of gas station
Unsnatch, and open the top cover of groove tank car, cause groove tank in-car oil gas to be released into air；
2. the groove tank car for transporting oil to gas station may draw gasoline today, go tomorrow and be changed to draw diesel oil, and oil depot to oil depot
To the diesel oil trestle work of groove tank car charge of oil, oil-gas recovery device is not filled at all, and (petroleum vapor recovery to diesel oil, country does not also force
Require), so as to the petrol gas for causing groove tank in-car are run in vain into air；
3. groove tank car is not closed tight, and gas is more easy to because the change of temperature causes the drastically change of volume, groove tank than liquid
In-car oil gas can make the close of the positions such as the increase of groove tank car internal pressure, many groove tank car caping, detection mouth due to temperature change
Closing property is not tight, and groove tank car hauls the race of car load oil gas streetful, and when next time is to oil depot charge of oil, possible internal oil gas subtracts significantly
It is few.
4. many 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
Groove tank car tank mouth can be carried out effectively closed, the oil-gas recovery device for causing oil depot is collected less than high-concentration oil vapor, affects oil depot
The yield of oil-gas recovery device.
For these reasons, it is if petroleum vapor recovery can directly be carried out in 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 in-car oil gas of present groove tank
In oil depot delay disposal far from the present situation for reaching desired effect.
For this reason, it is necessary to first say down that secondary oil gas are reclaimed and three petroleum vapor recoveries, it is that gas station exists that secondary oil gas are reclaimed
When refueling a car, the oil gas of oil gas and volatilization of refueling in automotive oil tank, 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 is present escapes, and must suck back that a little just to can guarantee that oil gas is tried one's best few when reclaiming oil gas more
Escape, thus have partial air and be drawn back into, national regulations its vapour-liquid ratios is generally 1～1.2:1 (volume ratio).Due to sucking back
Oil gas more than the oily volume that adds to automobile, the pressure of buried tank can gradually rise, and high 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, and gas volume reduces in buried tank, and pressure step-down causes to exhale
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 now, just will must be installed as oil depot oil gas when oil gas is breathed out to environment
The equipment that reclaimer can make like that oil gas qualified discharge, rather than only carry out VLE.Such equipment and reclaimed
Journey is referred to as three petroleum vapor recoveries of gas station.
Three petroleum vapor recoveries of gas station are to suck gas when solving buried tank due to temperature change or secondary recovery
Cause emission problem during pressure rise, general treating capacity is all very little, between 1NM3/h～5NM3/h.
And during gas station's emptying, a general groove tank vehicle volume is 30～60 cubic metres, whole emptying process is typically one
Hour or so is completed, that is, the oil and gas content for producing is about 30～60Nm3/h, if therefore to gas station's emptying fashionable dress as three oil gas time
Such equipment is received, needs 30 to amplify 30 times or so the requirements that could meet petroleum vapor recovery process in other words, it is clear that this is not
It is economical, therefore, except daily can emptying up to gas stations more than 3 cars, some gas station owners install for economic benefit
Outside the oil-gas recovery processing device crossed as the petroleum vapor recovery of three petroleum vapor recoveries or oil depot, people is there is presently no specially right
Petroleum vapor recovery during gas station's emptying is optimized design.
For the gas station in the whole nation more than 90%, it is daily, or per couple of days only one of which groove tank car emptying, often
About hour of secondary emptying, like this, by taking the petroleum vapor recovery processing equipment for filling a set for the treatment of capacity 50Nm3/h as an example, market
Valency is about 30～600,000, even if every time emptying can reclaim 200 yuan or so of oil, the cycle of its cost recovery is also very
Long.Because the interval time that gas station oil gas reclaimer is used every time is very long, capacity utilization was low, per 24～72 hours
Using within only one hour, other times are all idle, for this purpose, what my utility model this set energy-storage type petroleum vapor recovery was processed
Method, can with 10～48 hours come slowly energy storage, little breathing discharge can also be simultaneously processed during accumulation of energy, and in groove tank car emptying
When discharge a large amount of energy process oil gas, to greatly reduce one-time investment cost, so as to promote gas station's emptying petroleum vapor recovery to set
Standby popularization.
It is illustrated in figure 1 the petroleum vapor recovery of gas station of the prior art a time (loading onto before energy-storage type petroleum vapor recovery) connection
Schematic diagram, the main emptying process of an existing petroleum vapor recovery：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.
Scheme of the present utility model is the improvement carried out to existing gas recovery system for oil for the problems referred to above.
Utility model content
In order to overcome deficiency of the prior art, this utility model to provide a kind of ladder phase-change type accumulation of energy petroleum vapor recovery and set
It is standby, because employing two-stage accumulation of energy, that is, the cold accumulation system of two grades of oil-gas condensers is increased, oil-gas formation staged is condensed,
The load of three-level oil-gas condenser is reduced, equipment overall power is less, more saves than the scheme energy of single-stage cold-storage, and refrigeration system is more
It is little.
In order to reach above-mentioned utility model purpose, the technical scheme that its technical problem adopted is solved as follows：
A kind of ladder phase-change type accumulation of energy oil-gas recovery device, including device for recovering oil and gas and cooling ＆ cool-storing apparatus, wherein：
The device for recovering oil and gas includes one-level oil-gas condenser, two grades of oil-gas condensers and the three-level oil gas being sequentially connected
Condenser, for causing oil gas to be input into from the import of the one-level oil-gas condenser side, and then passes sequentially through the primary oil
After gas condenser, two grades of oil-gas condensers and three-level oil-gas condenser pre-cooling, return in the one-level oil-gas condenser and pass through
The outlet output of the one-level oil-gas condenser side；
The cooling ＆ cool-storing apparatus include high-temperature level compressor, air-cooled condenser and high temperature nuclear one-stage throttling device, the high-temperature level
Compressor, air-cooled condenser, high temperature nuclear one-stage throttling device and two grades of oil-gas condensers are sequentially connected and are formed first circulation loop.
Further, the cooling ＆ cool-storing apparatus also include agent for storage of coldness, and the agent for storage of coldness is divided into two grades of agent for storage of coldness and three-level
Agent for storage of coldness, two grades of agent for storage of coldness are positioned in two grades of oil-gas condensers, and the three-level agent for storage of coldness is positioned over the three-level
In oil-gas condenser.
Further, it is separate from inside to outside inside two grades of oil-gas condensers to be provided with for the high-temperature level system that circulates
First high-temperature level tube side of cryogen, the first low-temperature level tube side for the low-temperature level cold-producing medium that circulates, for coat it is described two grades storage
First shell side of cryogen and the first outer shell side for the oil gas that circulates, the first high-temperature level tube side and the first low-temperature level tube side quilt
First shell side is coated, and first shell side is coated by the described first outer shell side；
It is separate from inside to outside inside the three-level oil-gas condenser to be provided with for the of the low-temperature level cold-producing medium that circulates
Two low-temperature level tube sides, the second shell side for coating the three-level agent for storage of coldness and the second housing journey for the oil gas that circulates, it is described
Second low-temperature level tube side is coated by second shell side, and second shell side is coated by the second housing journey.
Further, also including low-temperature level compressor, expansion vessel, expansion vessel throttling arrangement and one-way load releasing valve,
Wherein：
Described low-temperature level compressor one end simultaneously with the one-way load releasing valve and two grades of oil-gas condensers in the first low temperature
Level tube side is connected, the other end simultaneously with the expansion vessel throttling arrangement and three-level oil-gas condenser in the second low-temperature level pipe
Cheng Xianglian；
The low-temperature level compressor, expansion vessel, expansion vessel throttling arrangement and one-way load releasing valve are sequentially connected and shape
Into second circulation loop.
Further, also including a low temperature nuclear one-stage throttling device, described low temperature nuclear one-stage throttling device one end connects two grades of oil
The first low-temperature level tube side in gas condenser, the other end connects the second low-temperature level tube side in the three-level oil-gas condenser, institute
State the second low-temperature level tube side in low temperature nuclear one-stage throttling device and the three-level oil-gas condenser, low-temperature level compressor and two grades of oil gas
The first low-temperature level tube side in condenser is sequentially connected and is formed the 3rd closed circuit.
Further, also including two grades of defrosters and three-level defroster, two grades of defrosters are laid in described
On first outer shell side of two grades of oil-gas condensers, the three-level defroster is laid in outside the second of the three-level oil-gas condenser
On shell side.
Preferably, two grades of defrosters and/or three-level defroster are anti-explosion electric heater.
Preferably, two grades of agent for storage of coldness be the ammonia of mass percent concentration 12%～19.5%, mass percent it is dense
The calcium chloride water of degree 21%～27% or the glycol water of mass percent concentration 38%～50%, use so that institute
The liquid-solid two-phase conversion temperature of two grades of agent for storage of coldness is stated between -20～-35 DEG C.
Preferably, the three-level agent for storage of coldness is carbon dioxide, ammonia, the ammonia of mass percent concentration 25%～35%, matter
The calcium chloride water of amount percent concentration 29%～30% or the glycol water of mass percent concentration 57%～68%,
With so that the liquid-solid two-phase conversion temperature of the three-level agent for storage of coldness is between -45～-85 DEG C.
This utility model compared with prior art, has the following advantages that and accumulates due to using above technical scheme, being allowed to
Pole effect：
1st, when traditional condensing of the prior art adopts 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 saves originally compact gas station's land used within 1.5 square metres；As a result of this accumulation of energy technique, refrigeration system
Can be designed to fairly small, so dramatically saves on manufacturing cost, be that gas station's popularization and application this energy-saving environmental protection devices is created
Advantage；
2nd, legacy equipment of the prior art due to power it is big, be 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
It is interior, equivalent to the power of domestic air conditioning, therefore the civilian power supply of 220V can be adopted completely, simplify mounting condition；
3rd, a kind of ladder phase-change type accumulation of energy oil-gas recovery device of this utility model increased because employing two-stage accumulation of energy
The cold accumulation system of two grades of oil-gas condensers, condenses oil-gas formation staged, reduces the load of three-level oil-gas condenser, and equipment is whole
Body power is less, more saves than the scheme energy of single-stage cold-storage, and refrigeration system is less.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, below will be to wanting needed for embodiment description
The accompanying drawing for using is briefly described.It is clear that drawings in the following description are only some embodiments of the present utility model,
For those skilled in the art, on the premise of not paying creative work, can be obtaining other according to these accompanying drawings
Accompanying drawing.In accompanying drawing：
Fig. 1 is the oil-gas recovery device connection diagram of gas station of the prior art a time；
Fig. 2 is that the emptying connection diagram after energy-storage type oil-gas recovery device is loaded onto in this utility model；
Fig. 3 is a kind of structural representation of ladder phase-change type accumulation of energy oil-gas recovery device in this utility model.
【Primary symbols explanation】
1- one-level oil-gas condensers；
Bis- grades of oil-gas condensers of 2-；
3- three-level oil-gas condensers；
4- high-temperature level compressors；
The air-cooled condensers of 5-；
6- high temperature nuclear one-stage throttling devices；
7- low-temperature level compressors；
8- expansion vessels；
9- expansion vessel throttling arrangements；
10- one-way load releasing valves；
11- low temperature nuclear one-stage throttling devices；
Bis- grades of defrosters of 12-；
13- three-level defrosters；
Bis- grades of agent for storage of coldness of 14-；
15- three-level agent for storage of coldness.
Specific embodiment
Below with reference to accompanying drawing of the present utility model, the technical scheme in this utility model embodiment is carried out clear, complete
Whole description and discussion, it is clear that as described herein is only a part of example of the present utility model, is not whole realities
Example, based on the embodiment in this utility model, those of ordinary skill in the art institute on the premise of creative work is not made
The every other embodiment for obtaining, belongs to protection domain of the present utility model.
As shown in Fig. 2 loading onto the main emptying process after energy-storage type gas recovery system for oil：During RTC unloading, closing is cut
Disconnected valve V1, opens stop valve V3 and stop valve V5, and liquid oil flows into buried oil storage tank, buried oil storage through stop valve V5
Oil gas in tank first passes through stop valve V2 into after energy-storage type device for recovering oil and gas, and the tail gas after process is returned by stop valve V3
Oil truck.The liquid of recovery is periodically put into buried oil storage tank by stop valve V4.
As shown in figure 3, the utility model discloses a kind of ladder phase-change type accumulation of energy oil-gas recovery device, including petroleum vapor recovery
Device and cooling ＆ cool-storing apparatus, wherein：
The device for recovering oil and gas includes 1, the two grades of oil-gas condensers 2 of one-level oil-gas condenser being sequentially connected and three-level oil
Gas condenser 3, for causing oil gas to be input into from the import of the side of one-level oil-gas condenser 1, and then passes sequentially through described one
After level 1, two grades of oil-gas condensers 2 of oil-gas condenser and the pre-cooling of three-level oil-gas condenser 3, the one-level oil-gas condenser 1 is returned
In and by the outlet of the side of one-level oil-gas condenser 1 output；
The cooling ＆ cool-storing apparatus include high-temperature level compressor 4, air-cooled condenser 5 and high temperature nuclear one-stage throttling device 6, the high temperature
Level compressor 4, air-cooled condenser 5, high temperature nuclear one-stage throttling device 6 and two grades of oil-gas condensers 2 are sequentially connected and form first circulation and return
Road.
In the present embodiment, the cooling ＆ cool-storing apparatus are also including the agent for storage of coldness of liquid-solid two-phase transformant, the agent for storage of coldness point
For two grades of agent for storage of coldness 14 and three-level agent for storage of coldness 15, two grades of agent for storage of coldness 14 are positioned in two grades of oil-gas condensers 2, preferably
, two grades of agent for storage of coldness 14 are the ammonia of mass percent concentration 12%～19.5%, mass percent concentration 21%～
27% calcium chloride water or the glycol water of mass percent concentration 38%～50%.The three-level agent for storage of coldness 15 is put
In being placed in the three-level oil-gas condenser 3, it is preferred that the three-level agent for storage of coldness 15 is carbon dioxide, ammonia, mass percent concentration
25%～35% ammonia, the calcium chloride water of mass percent concentration 29%～30% or mass percent concentration 57%～
68% glycol water.
In the present embodiment, when liquid-solid two-phase conversion temperature is more than -55 DEG C, with above-mentioned several solns can, when liquid it is solid
When two phase transition temperatures are less than -70 DEG C, because calcium chloride water and glycol water are to not -85 DEG C of so low temperature
Degree, as ammonia can only be used if solution.Specifically, when liquid-solid two-phase conversion temperature is less than -55 DEG C it is not recommended that using
Calcium chloride water, when liquid-solid two-phase conversion temperature is less than -70 DEG C it is not recommended that using glycol water.
Generally two grades of agent for storage of coldness 14 and three-level agent for storage of coldness 15 select be under room temperature liquid material it is even more ideal, such as
Ammonia, calcium chloride water and glycol water etc..Wherein, the liquid-solid two-phase conversion temperature point of two grades of agent for storage of coldness 14 is -20
Between～-35 DEG C, the liquid-solid two-phase conversion temperature point of three-level agent for storage of coldness 15 is between -45～-85 DEG C.
Further, it is separate from inside to outside inside two grades of oil-gas condensers 2 to be provided with for the high-temperature level that circulates
First high-temperature level tube side (not shown) of cold-producing medium, the first low-temperature level tube side (not shown) for the low-temperature level cold-producing medium that circulates,
For coating first shell side (not shown) of two grades of agent for storage of coldness 14 and the first outer shell side (not shown) for the oil gas that circulates,
The first high-temperature level tube side and the first low-temperature level tube side are coated by first shell side, and first shell side is by described first
Outer shell side is coated；
It is separate from inside to outside inside the three-level oil-gas condenser 3 to be provided with for the of the low-temperature level cold-producing medium that circulates
Two low-temperature level tube sides (not shown), the second shell side (not shown) for coating the three-level agent for storage of coldness 15 and for the oil gas that circulates
Second housing journey (not shown), the second low-temperature level tube side coated by second shell side, and second shell side is by institute
State second housing journey to be coated.
With further reference to Fig. 3, the ladder phase-change type accumulation of energy oil-gas recovery device also includes low-temperature level compressor 7, expansion
Container 8, expansion vessel throttling arrangement 9 and one-way load releasing valve 10, wherein：
Described one end of low-temperature level compressor 7 simultaneously with the one-way load releasing valve 10 and two grades of oil-gas condensers 2 in first
Low-temperature level tube side is connected, and the other end is simultaneously low with second in throttling arrangement 9 and three-level oil-gas condenser 3 with the expansion vessel
Warm level tube side is connected；
The low-temperature level compressor 7, expansion vessel 8, expansion vessel throttling arrangement 9 and one-way load releasing valve 10 are sequentially connected
And form second circulation loop.
With continued reference to Fig. 3, the ladder phase-change type accumulation of energy oil-gas recovery device also includes a low temperature nuclear one-stage throttling device 11, institute
State the first low-temperature level tube side that the one end of low temperature nuclear one-stage throttling device 11 connects in two grades of oil-gas condensers 2, other end connection institute
State the second low-temperature level tube side in three-level oil-gas condenser 3, the low temperature nuclear one-stage throttling device 11 and the three-level oil-gas condenser 3
In the second low-temperature level tube side, the first low-temperature level tube side in low-temperature level compressor 7 and two grades of oil-gas condensers 2 is sequentially connected simultaneously
Form the 3rd closed circuit.
The ladder phase-change type accumulation of energy oil-gas recovery device further includes two grades of defrosters 12 and three-level defroster
13, two grades of defrosters 12 are laid on the first outer shell side of two grades of oil-gas condensers 2, the three-level defroster
13 are laid in the second housing journey of the three-level oil-gas condenser 3.In the present embodiment, two grades of defrosters 12 and/or
Three-level defroster 13 is preferably anti-explosion electric heater.
In the present embodiment, concrete oil-gas recovery method includes petroleum vapor recovery flow process and refrigeration and cold accumulation flow process, wherein：
Petroleum vapor recovery flow process specifically includes following steps：
The oil gas produced when oil truck is unloaded carries out pre-cooling by one-level oil-gas condenser 1 so that and temperature is reduced to -10～
Between+10 °, and while remove the most of moisture in oil gas；
Two grades of oil-gas condensers with two grades of agent for storage of coldness 14 are entered through the oil gas of the preliminary pre-cooling of one-level oil-gas condenser 1
In 2, the heat of two grades of agent for storage of coldness 14 of oil gas absorbing so that temperature is reduced between -15～-30 °, some hydrocarbon thing in oil gas
Matter is condensed recovery, and the remaining oil gas containing some hydrocarbon travels further into the three-level oil-gas condenser with three-level agent for storage of coldness 15
Continue to lower the temperature in 3 so that oil gas temperature is further reduced between -40～-80 °, the most hydrocarbons quilts in oil gas
Condensation is reclaimed, and remaining cryogenic gas returns again to one-level oil-gas condenser 1, and with into the high temperature in one-level oil-gas condenser 1
Oil gas carries out heat exchange, returns again to oil truck；
Refrigeration and cold accumulation flow process specifically includes following steps：
The high-temperature high-pressure refrigerant that high-temperature level compressor 4 is discharged phase transformation condensation in air-cooled condenser 5, and by high-temperature level section
Stream device 6 makes high-temperature high-pressure refrigerant become Low temperature low pressure liquid, and low-temperature level refrigeration system is absorbed in two grades of oil-gas condensers 2
The heat of transformation of the condensation heat of system and two grades of agent for storage of coldness 14, makes two grades of agent for storage of coldness 14 become solid-state from liquid, while as low temperature
The condenser and the condenser of two grades of oil gas of level refrigeration system, reduces the thermic load of three-level oil-gas condenser 3；Wherein, two grades of storages
Cryogen 14 can be ammonia, the calcium chloride water of mass percent concentration 21%～27% of mass percent concentration 12%～19.5%
The glycol water of solution or mass percent concentration 38%～50%, its selection principle is to ensure its liquid-solid two-phase conversion temperature
Degree is between -20～-35 DEG C.
The high temperature and high pressure gas that low-temperature level compressor 7 is discharged, condense in two grades of oil-gas condensers 2, and low-temperature refrigerant becomes
Into the subcooled liquid of high pressure low temperature, the low-temperature level cold-producing medium of high pressure low temperature becomes low-temp low-pressure through low temperature nuclear one-stage throttling device 11 again
Liquid, and the heat of three-level agent for storage of coldness 15 is absorbed in three-level oil-gas condenser 3, make three-level agent for storage of coldness 15 keep -40～-80
DEG C ultralow temperature.Wherein, three-level agent for storage of coldness 15 can be carbon dioxide, ammonia, the ammonia of mass percent concentration 25%～35%, matter
The calcium chloride water of amount percent concentration 29%～30% or the glycol water of mass percent concentration 57%～68%
It is to ensure its liquid-solid two-phase conversion temperature between -45～-85 DEG C Deng, its selection principle.
In the present embodiment, cool-storage time can according to gas station unload situation determine, it is necessary to control in the time unloaded twice
In interval, and certain surplus is left, typically can be selected between 6～30 hours.During cold-storage, high-temperature level elder generation cold-storage is treated to reach substantially
Start high/low temperature level cold-storage simultaneously simultaneously again to after cold-storage temperature.
It is laid with corresponding two grades of defrosters 12 and three on two grades of oil-gas condensers 2 and three-level oil-gas condenser 3 respectively
Level defroster 13, after gas recovery system for oil runs 1～6 month, needs to two grades of oil-gas condensers 2 and/or three-level oil
The operation that gas condenser 3 is defrosted, specifically, high/low temperature level refrigeration system shuts down, two grades of defrosters 12 and/or three
Level defroster 13 starts, and carries out overall defrosting to two grades of oil-gas condensers 2 and/or three-level oil-gas condenser 3 respectively.
The above, only this utility model preferably specific embodiment, but protection domain of the present utility model is not
This is confined to, any those familiar with the art can readily occur in the technical scope that this utility model is disclosed
Change or replacement, all should cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should
It is defined by scope of the claims.
Claims (9)
1. a kind of ladder phase-change type accumulation of energy oil-gas recovery device, it is characterised in that including device for recovering oil and gas and refrigeration and cold accumulation dress
Put, wherein：
The device for recovering oil and gas includes one-level oil-gas condenser, two grades of oil-gas condensers and the three-level oil gas condensation being sequentially connected
Device, for causing oil gas to be input into from the import of the one-level oil-gas condenser side, and then passes sequentially through the primary oil air cooling
After condenser, two grades of oil-gas condensers and three-level oil-gas condenser pre-cooling, return in the one-level oil-gas condenser and by described
The outlet output of one-level oil-gas condenser side；
The cooling ＆ cool-storing apparatus include high-temperature level compressor, air-cooled condenser and high temperature nuclear one-stage throttling device, the high-temperature level compression
Machine, air-cooled condenser, high temperature nuclear one-stage throttling device and two grades of oil-gas condensers are sequentially connected and are formed first circulation loop.
2. a kind of ladder phase-change type accumulation of energy oil-gas recovery device according to claim 1, it is characterised in that the refrigeration stores
Device for cooling also includes agent for storage of coldness, and the agent for storage of coldness is divided into two grades of agent for storage of coldness and three-level agent for storage of coldness, and two grades of agent for storage of coldness are positioned over
In two grades of oil-gas condensers, the three-level agent for storage of coldness is positioned in the three-level oil-gas condenser.
3. a kind of ladder phase-change type accumulation of energy oil-gas recovery device according to claim 2, it is characterised in that
It is separate from inside to outside inside two grades of oil-gas condensers to be provided with for the first high of high-temperature level refrigeration agent of circulating
Warm level tube side, the first low-temperature level tube side for the low-temperature level cold-producing medium that circulates, the first shell for coating two grades of agent for storage of coldness
Journey and the first outer shell side for the oil gas that circulates, the first high-temperature level tube side and the first low-temperature level tube side are by first shell side
Coated, first shell side is coated by the described first outer shell side；
It is separate from inside to outside inside the three-level oil-gas condenser to be provided with for the second low of the low-temperature level cold-producing medium that circulates
Warm level tube side, the second shell side for coating the three-level agent for storage of coldness and the second housing journey for the oil gas that circulates, described second
Low-temperature level tube side is coated by second shell side, and second shell side is coated by the second housing journey.
4. a kind of ladder phase-change type accumulation of energy oil-gas recovery device according to claim 3, it is characterised in that also including low temperature
Level compressor, expansion vessel, expansion vessel throttling arrangement and one-way load releasing valve, wherein：
Described low-temperature level compressor one end simultaneously with the one-way load releasing valve and two grades of oil-gas condensers in the first low-temperature level pipe
Cheng Xianglian, the other end simultaneously with the expansion vessel throttling arrangement and three-level oil-gas condenser in the second low-temperature level tube side phase
Even；
The low-temperature level compressor, expansion vessel, expansion vessel throttling arrangement and one-way load releasing valve are sequentially connected and form
Two closed circuits.
5. a kind of ladder phase-change type accumulation of energy oil-gas recovery device according to claim 3, it is characterised in that also low including
Warm nuclear one-stage throttling device, described low temperature nuclear one-stage throttling device one end connects the first low-temperature level tube side in two grades of oil-gas condensers,
The other end connects the second low-temperature level tube side in the three-level oil-gas condenser, the low temperature nuclear one-stage throttling device and three-level oil
The first low-temperature level tube side in the second low-temperature level tube side, low-temperature level compressor and two grades of oil-gas condensers in gas condenser is successively
It is connected and is formed the 3rd closed circuit.
6. a kind of ladder phase-change type accumulation of energy oil-gas recovery device according to claim 3, it is characterised in that also including two grades
Defroster and three-level defroster, two grades of defrosters are laid in the first outer shell side of two grades of oil-gas condensers
On, the three-level defroster is laid in the second housing journey of the three-level oil-gas condenser.
7. a kind of ladder phase-change type accumulation of energy oil-gas recovery device according to claim 6, it is characterised in that described two grades are removed
White device and/or three-level defroster are anti-explosion electric heater.
8. a kind of ladder phase-change type accumulation of energy oil-gas recovery device according to claim 2, it is characterised in that two grades of storages
Cryogen is ammonia, the calcium chloride water of mass percent concentration 21%～27% of mass percent concentration 12%～19.5%
Or the glycol water of mass percent concentration 38%～50%, use the liquid-solid two-phase conversion so that two grades of agent for storage of coldness
Temperature is between -20～-35 DEG C.
9. a kind of ladder phase-change type accumulation of energy oil-gas recovery device according to claim 2, it is characterised in that the three-level stores
Cryogen is carbon dioxide, ammonia, the ammonia of mass percent concentration 25%～35%, the chlorine of mass percent concentration 29%～30%
Change the glycol water of calcium aqueous solution or mass percent concentration 57%～68%, use so that the liquid of the three-level agent for storage of coldness
Gu two phase transition temperatures are between -45～-85 DEG C.
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| CN201621189754.7U CN206138775U (en) | 2016-10-28 | 2016-10-28 | Ladder facies change model energy storage vapor recovery system equipment |
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| CN201621189754.7U CN206138775U (en) | 2016-10-28 | 2016-10-28 | Ladder facies change model energy storage vapor recovery system equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106621439A (en) * | 2016-10-28 | 2017-05-10 | 上海聚宸新能源科技有限公司 | Two-stage phase-change energy-storing oil gas recycling system and method |
| CN111575044A (en) * | 2020-06-11 | 2020-08-25 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Indirect oil gas condensation recovery device and recovery process thereof |
-
2016
- 2016-10-28 CN CN201621189754.7U patent/CN206138775U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106621439A (en) * | 2016-10-28 | 2017-05-10 | 上海聚宸新能源科技有限公司 | Two-stage phase-change energy-storing oil gas recycling system and method |
| CN106621439B (en) * | 2016-10-28 | 2019-09-27 | 上海聚宸新能源科技有限公司 | A kind of two-stage phase-changing energy-storing gas recovery system for oil and method |
| CN111575044A (en) * | 2020-06-11 | 2020-08-25 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Indirect oil gas condensation recovery device and recovery process thereof |
| CN111575044B (en) * | 2020-06-11 | 2021-10-22 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | Indirect oil gas condensation recovery device and recovery process thereof |
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