CN206721128U - A kind of oil gas recovery processing system based on emission reduction control - Google Patents
A kind of oil gas recovery processing system based on emission reduction control Download PDFInfo
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- CN206721128U CN206721128U CN201720345021.6U CN201720345021U CN206721128U CN 206721128 U CN206721128 U CN 206721128U CN 201720345021 U CN201720345021 U CN 201720345021U CN 206721128 U CN206721128 U CN 206721128U
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Abstract
The utility model discloses a kind of oil gas recovery processing system based on emission reduction control, is made up of oil tank oil gas control system, handling oil-gas recovery system and oil vapor treatment system.Oil vapor treatment system obtains enrichment oil gas with pressure and the waste gas less than lower explosive limit concentration, waste gas directly enters combustion chamber and burns qualified discharge, and enrichment oil gas stores to be controlled for oil gas emission reduction using compression+condensation+membrane separating method combination.Oil tank oil gas control system uses self-adaptation control method, utilizes enrichment oil controlled atmosphere fuel-economizing tank gaseous pressure, during regulation, gas concentration in the single-phase circulation continuous lifting oil tank of oil tank oil gas.Handling oil-gas recovery system is that the oil-air pressure replaced when gas and stabilization are loaded and unloaded in oil truck is swept using enrichment oil air-blowing, possesses the function of emptying oil gas in oil truck, the oil truck discharge direct oil-feed gas processing system of gas.The utility model reduces oil tank " big breathing " Loss of Oil Evaporation caused by " small breathing ", reduces the energy consumption of oil vapor treatment system.
Description
Technical field
It the utility model is related to during a kind of oil storage and transportation caused oil vapor treatment and using system, more particularly to
A kind of oil gas recovery processing system based on emission reduction control.
Background technology
It is revised《The Law of the People's Republic of China on the Prevention and Control of Atmospheric Pollution》Implement from 1 day January in 2016, every profession and trade and place
Standard has been promulgated new therewith《Discharge standard of air pollutants》, the NMHC air discharged in a organized way is arranged more
Put limit value requirement and be less than 120mg/m3, as little as 4mg/m3 is required to the NMHC air emission limit of uncontrollable discharge, compared with
Before the harsh many of atmosphere pollutants emission standardses.Combustion method can reach current mandatory emission limit requirement
One of oil vapor treatment technology, the hydro carbons in oil gas is when satisfaction supplies oxygen sufficient, 650~1000 DEG C of temperature and 0.5~2.0 second resident
Between under the conditions of, be fully converted to carbon dioxide and water directly discharge, thoroughly eliminate hydrocarbons including methane to environment
Caused by harm.Shortcoming is can not to reclaim useful hydrocarbons, and because of the requirement of oil gas combustion completion, it is necessary to be mixed in oil gas
With air, the problems such as caused safety control system is complicated, fuel consumption is more, carbon dioxide increment discharges, to resource and environment
Produce added burden.
Oil gas control system includes oil-gas recovery system and oil vapor treatment system, and oil-gas recovery system uses most at present
It is " totally-enclosed balanced oil and gas system ", it is by the oil-gas closed collection of the discharges such as oil tank, loading-unloading vehicle, fuel charger, is dumped to
The gas-phase space of oil tank, oil gas is sealed up for safekeeping using the pressure/vacuum of oil tank, pass through oil gas gas phase pipeline balance tank and loading-unloading vehicle
Oil-air pressure, the part oil gas in oil tank is dumped to again in the loading-unloading vehicle of sky, unnecessary exhaust of oil in oil tank to oil gas
Processing system.
The technical method that oil vapor treatment system uses has condensation method, absorption process, absorption method, embrane method, combustion method and a variety of
The combination of method, OPW companies of the U.S. are used for " vaporsaver " of underground oil tank of gasoline station oil vapor treatment, by compressing
Machine, condenser, membrane module, vavuum pump and connecting line composition, are entered by pressure switch and gas concentration sensor to system
Row control.When the oil-air pressure in buried tank reaches+25Pa, system starts to start, and oil gas is compressed, after condensation, obtains
In the condensate liquid injection buried tank arrived, non-congealable oil pneumatic transmission enters membrane module and is separated hydro carbons with air, and it is useless to ooze residual air
Gas is discharged into air, and infiltration gas is that high-concentration oil vapor sends buried tank back to through vavuum pump, when the oil gas in buried tank
When pressure is down to -130Pa, system is out of service and recovers to static monitor state, substantially in negative pressure between the system work area, has
It is not leak into beneficial to the oil gas in petroleum system in air." vaporsaver " has installation in Duo Di gas stations of China
Use, domestic and international multinomial examining report shows：Using the petroleum system seal qualification rate less than 50%." oil gas seals condensation up for safekeeping
System " negative pressure state can cause oil tank oil gas volatilization, can also cause air to enter petroleum system, aggravation oil tank oil by leakage point
The volatilization of gas, and there is be not easy to find situation about leaking in working condition for the system so that oil vapor treatment system long period
Overtime work.
Saturation oil-gas Layer, oil-gas Layer are formed during oil product storage on liquid level, when saturation oil-gas Layer reaches gas-liquid two-phase balance
Oil product no longer produces oil gas evaporation, and pressure, temperature, the Volume Changes of oil storage tank gas-phase space can all cause oil product gas-liquid two-phase to turn
Change.Obviously, prevent ambient atmos from entering oil storage tank, improve oil storage tank gaseous pressure, reduce oil product storage temperature, reduce oil product and steam
Exhaust of oil amount can be reduced by delivering area.At oil gas emission reduction control technology, oil-gas closed collection technique, low energy consumption oil gas
Reason technology is considered, and forms the oil gas control system of integration, ensures storage oil quality sum amount, meets environmental protection row
Standard is put, environmental benefit and the economic benefit for being only oil gas control system are basic.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of oil gas based on emission reduction control returns
Receive processing system, it is ensured that emission matching standard.
The utility model is achieved through the following technical solutions, and the utility model includes balance liquid seal, oil gas compression
Machine, heat exchanger, condensing plant, membrane separator and combustion chamber；There is hydraulic layer, the balance liquid seal in the balance liquid seal
Bottom there is lower cavity, the oil gas of the oil tank is connected to the top of balance liquid seal, and bottom is entered after hydraulic layer
Cavity, the oil gas of the oil truck is connected to the lower cavity of the balance liquid seal, under the oil gas compressor connection is described
Portion's cavity, the outlet connection heat exchanger of the oil gas compressor, the heat exchanger are connected to condensing plant, the condensing plant
Condensate outlet is connected to the oil gas reuse cabin in oil tank, the non-congealable oil gas outlet of the condensing plant be connected to heat exchanger and with
The outlet oil gas heat exchange of oil gas compressor is connected to membrane separator, the film point after being warming up to more than non-congealable oil gas dew-point temperature
The gas concentration for oozing vent outlet from device enters combustion chamber less than the waste gas of LEL, and the infiltration gas of the membrane separator goes out
The gas concentration of mouth enters oil gas compressor higher than the waste gas of UEL, and the residual air of oozing of the membrane separator is connected to oil gas
Tank.
The balance liquid seal is provided with first pressure transmitter, and the first pressure transmitter connects the balance fluid-tight
The lower cavity of part, the output signal connection oil gas compressor of the first pressure transmitter.
The condensing plant includes condenser and condensation liquid separation tank, and the condenser is arranged in condensation liquid separation tank, described
Condensation liquid separation tank is provided with the first fluid level transmitter, and the condensate outlet of the condensation liquid separation tank is provided with the 5th regulating valve.
The membrane separator is porous membrane separator, and the membrane separator oozes setting gas concentration instrument on vent outlet,
The signal of the gas concentration instrument is divided into two-way, and signal to the first regulating valve, another way signal are described to the second regulating valve all the way
The import for being connected to oil gas compressor of first regulating valve, second regulating valve are connected to combustion chamber.
The oil gas reuse cabin is floated in oil tank, and the oil gas reuse cabin passes through condensate liquid flexible duct and enrichment oil gas
Flexible duct is connected to outside oil tank, and multiple scattered oilholes and air dispelling hole are set on the oil gas reuse cabin.
Being connected between the oil gas tank and oil tank by being enriched with oil-gas pipeline, the oil tank is provided with the first control assembly,
First control assembly includes gaseous pressure transmitter, the second fluid level transmitter, temperature transmitter, the 3rd regulating valve and control
Device, the gaseous pressure transmitter, the second fluid level transmitter, temperature transmitter, the signal of the 3rd regulating valve connect control respectively
Device, the 3rd regulating valve are arranged between enrichment oil-gas pipeline and oil gas reuse cabin.
Connected between the oil gas tank, oil truck and balance liquid seal by being enriched with oil-gas pipeline, the enrichment Oil/Gas Pipe
Road is provided with the second control assembly, and second control assembly includes the first valve, the second valve, the 3rd valve, the 4th valve；
First valve is connected between enrichment oil-gas pipeline and the bottom of oil truck, and second valve and the 4th valve connect successively
It is connected between oil truck and balance liquid seal, one end of the 3rd valve is connected to the import of the first valve, other end connection
Between the second valve and the 4th valve.
The top of the oil gas tank is provided with second pressure transmitter and the 4th regulating valve, the second pressure transmitter it is defeated
Go out signal and connect the 4th regulating valve, the oil gas tank is connected to combustion chamber by the 4th regulating valve.
The utility model has advantages below compared with prior art：
1st, the utility model is made up of oil tank oil gas control system, handling oil-gas recovery system and oil vapor treatment system.Oil
Oil gas is with pressure is stored in oil gas tank for enrichment caused by gas processing system, for oil tank oil gas control system and handling oil gas collection
System.Oil tank oil gas control system mainly includes：Instrumentation, controller, regulating valve, oil gas reuse cabin on oil tank.Oil tank
Oil gas control system is adjusted according to the change of oil tank level, storage temperature and environmental condition, auto-- tuning controller parameter, control
The operation of valve is saved, using oil gas reuse cabin by low temperature cold lime set, enrichment oil gas re-injection caused by oil vapor treatment system in oil tank
Liquid surface, liquid level saturation oil-gas Layer concentration is improved, reduce liquid level saturation oil-gas Layer temperature, formed over-saturation oil-gas Layer and be allowed to profit
In liquefaction.Oil tank oil gas control system efficiently make use of isolate and cold caused by oil vapor treatment system, stable to maintain oil tank
Gaseous pressure effectively prevents extraneous gas to enter oil tank in barotropic state, also causes oil tank during recycling, oil
Gas concentration in tank is constantly lifted, and is eliminated oil tank " big breathing " Loss of Oil Evaporation caused by " small breathing " to greatest extent, is subtracted
Lack exhaust of oil amount, reduce the live load of oil vapor treatment system.
2nd, handling oil-gas recovery system is to sweep gas in displacement oil truck using enrichment oil air-blowing caused by oil vapor treatment system
Body, oil truck gas concentration in oil truck in cargo handling process is improved, stabilize oil truck in cargo handling process in oil truck
Gaseous pressure is in barotropic state, and the gas of oil truck discharge enters to balance hydraulic layer lower cavity in fluid-tight, by oil vapor treatment system
In compressor directly extract.Relative to " the totally-enclosed balanced oil and gas system " used between current oil tank and oil truck, this reality
With it is new greatly reduce oil truck in cargo handling process caused by Loss of Oil Evaporation, add after the completion of oil truck unloads,
The function of oil gas in oil truck is emptied, solves in oil truck discharge gas the problem of air content is high, influences whole petroleum system.
3rd, using the pressure/vacuum of improved balance fluid-tight substitution oil tank, oil tank oil gas enters to be balanced the utility model
The gas-phase space on hydraulic layer top in fluid-tight, oil tank oil gas only in superpressure state, can just overflow hydraulic layer, be discharged under hydraulic layer
Portion's cavity；The gas of oil truck discharge directly enters to balance hydraulic layer lower cavity in fluid-tight.Improved balance fluid-tight ensure that
Oil tank safe operation, and oil tank petroleum system and handling petroleum system are separated, avoid compressor and excessively extract oil tank oil
The phenomenon of gas so that oil vapor treatment system need to only discharge a small amount of mixed air, and whole oil gas control system can prove effective, greatly
Reduce oil vapor treatment system operation energy consumption greatly.Balance fluid-tight also ensure that whole petroleum system maintains barotropic state, once
There occurs oil and gas leakage, can be found by peripheral hardware instrumentation and taken measures in time, system reliability greatly improves.
4th, the utility model oil vapor treatment system is combined and formed by compression+condensation+UF membrane+combustion method, passes through routine
Compression ratio and either shallow condensation oil gas is pre-processed, avoid infringement of the free fluid to film；Selection air preferentially passes through type
Perforated membrane carries out UF membrane to fixed gas, obtains enrichment oil gas with pressure and the waste gas less than lower explosive limit concentration, enrichment
Oil gas is stored in oil gas tank, is controlled for above-mentioned oil gas decrement discharge；Waste gas when eliminating burning caused by backflash explode
Potential safety hazard, without mixture air and complicated combustion completion control system, it can directly enter ordinary combustion stove and carry out heating power oxygen
Change and decompose, meet environmental emission standard.The utility model be particularly suitable for use in refinery's storage and handling facility petroleum vapor recovery processing, utilize refining
More, near apart from the storage and handling facility advantage of factory's Furnace, the combustion chamber that waste gas is introduced directly into heating furnace are burned, thoroughly eliminated
Hydrocarbons including methane endanger to caused by environment.
As seen from the above, the utility model carries out oil gas emission reduction control, oil-gas closed collection, low energy consumption oil vapor treatment
Global optimization combination, the oil gas control technology of integration is formed, relative to existing petroleum vapor recovery treatment technology, is either existed
Economic benefit still has significant progress in terms of environmental benefit.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Embodiment of the present utility model is elaborated below, the present embodiment using technical solutions of the utility model before
Put and implemented, give detailed embodiment and specific operating process, but the scope of protection of the utility model is unlimited
In following embodiments.
Existing oil product storage mostly uses normal pressure (micro- internal pressure) fixed roof tank, and storage tank is provided with breather valve, hydraulic safe
The safety attachment of valve or blow vent etc. and atmosphere, it is oil gas uncontrollable discharge source.The present embodiment is made using balance liquid seal 3
For fixed roof tank safety attachment, and according to《Petroleum storage tank annex》The regulation of E levels breather valve in SY/T0511 standards：Suction is opened
Pressure -295Pa, exhalation Opening pressure+1765Pa are opened, balancing in liquid seal 3 has logical air hydraulic layer 3b and hydraulic layer 3a, and
Hydraulic layer height value is set；Hydraulic layer 3a height values are set as+1665Pa, and its back pressure value is set as+100Pa, lead to big
Gas-liquid sealing 3b height values are set as+295Pa；Balance liquid seal 3 and control the gaseous pressure in storage tank in -295~+1665Pa models
In enclosing, i.e., will not suck air will not also breathe out oil gas.
As shown in figure 1, in figure：Arrow represents medium flow direction；Heavy line represents equipment and pipeline；Dotted line represents instrument signal
Line.The present embodiment is set including oil truck 1, oil tank 2, oil gas tank 9, balance liquid seal 3, oil gas compressor 4, heat exchanger 5, condensation
Standby, membrane separator 8, combustion chamber 11；The oil gas of the oil tank 2 is connected to the upper space of balance liquid seal 3, the production of oil truck 1
The lower cavity of raw oil gas connection balance liquid seal 3, the bottom of the import connection balance liquid seal 3 of the oil gas compressor 4
Cavity, the import of the outlet connection heat exchanger 5 of the oil gas compressor 4, the non-congealable oil gas outlet of the condensing plant is connected to
Heat exchanger 5 is simultaneously connected to film point after being warming up to more than non-congealable oil gas dew-point temperature with the outlet oil gas heat exchange of oil gas compressor 4
From device 8, the gas concentration for oozing vent outlet of the membrane separator 8 enters combustion chamber 11 less than the waste gas of LEL, described
The gas concentration for oozing vent outlet of membrane separator 8 enters the entrance of oil gas compressor 4, the film higher than the waste gas of UEL
The residual air of oozing of separator 8 is connected to oil gas tank 9.
Balance liquid seal 3 is provided with first pressure transmitter 20, the output signal connection of the first pressure transmitter 20
Oil gas compressor 4.
Condensing plant includes condenser 7 and condensation liquid separation tank 6, and the condenser 7 is arranged in condensation liquid separation tank 6, described
Condensation liquid separation tank 6 is provided with the first fluid level transmitter 21, and the condensate outlet of the condensation liquid separation tank 6 is provided with the 5th regulating valve
30。
Membrane separator 8 is porous membrane separator, and oozing for the membrane separator 8 sets gas concentration instrument 22 on vent outlet,
The signal of the gas concentration instrument 22 is divided into two-way, and signal connects the first regulating valve 31 all the way, and another way signal connection second is adjusted
Valve 32, the import for being connected to oil gas compressor 4 of first regulating valve 31 are saved, second regulating valve 32 is connected to burning
Room 11.
Connected between oil gas tank 9 and oil tank 2 by being enriched with oil-gas pipeline, the oil tank 2 is provided with the first control assembly, institute
Stating the first control assembly includes gaseous pressure transmitter 23, the second fluid level transmitter 24, temperature transmitter 25, the 3rd regulating valve 33
With controller 26, the gaseous pressure transmitter 23, second fluid level transmitter 24, temperature transmitter 25, the 3rd regulating valve 33
Signal connects controller 26 respectively, and the 3rd regulating valve 33 is arranged between enrichment oil-gas pipeline and oil gas reuse cabin 10.
Connected between the oil gas tank 9, oil truck 1 and balance liquid seal 3 by being enriched with oil-gas pipeline, the oil gas tank 9,
Enrichment oil-gas pipeline between oil truck 1 and balance liquid seal 3 is provided with the second control assembly, and second control assembly includes
First valve 34, the second valve 35, the 3rd valve 36, the 4th valve 37；First valve 34 is connected to enrichment oil-gas pipeline
Between the bottom of oil truck 1, the valve 37 of the second valve 35 and the 4th is connected to oil truck 1 and balance liquid seal 3 in turn
Between, one end of the 3rd valve 36 is connected to the import of the first valve 34, and the other end is connected to the second valve 35 and the 4th
Between valve 37.
The top of the oil gas tank 9 is provided with the regulating valve 38 of second pressure transmitter 27 and the 4th, the second pressure pick-up
The signal of device 27 connects the 4th regulating valve 38, and the oil gas tank 9 is connected to combustion chamber 11 by the 4th regulating valve 38.
Wherein oil gas compressor 4, heat exchanger 5, condensing plant, membrane separator 8, combustion chamber 11 and its corresponding controllers part structure
Into oil vapor treatment system, and oil tank 2, balance liquid seal 3, oil gas tank 9, oil gas reuse cabin 10 and its relevant control device are formed
Oil tank oil gas control system, handling oil-gas recovery system are made up of oil truck 1, oil gas tank 9 and its relevant control device.
The specific work process of the present embodiment is as follows：
When the oil-air pressure in oil tank 2 exceeds+1665Pa, oil gas enters balance by balancing the hydraulic layer 3a of liquid seal 3
The lower cavity of liquid seal 3；When the gaseous pressure of the lower cavity of balance liquid seal 3 reaches+100Pa, first pressure thereon
The oil gas supercharging of the drainage balance liquid seal 3 of signal enabling oil gas compressor 4 bottom of transmitter 20, the compression of oil gas compressor 4
Than for 3~4, when the gaseous pressure for balancing the bottom of liquid seal 3 reaches 0Pa, the signal of its first pressure transmitter 20 stops oil
Air compressor 4 is run.
Supercharging oil gas is cooled to 3 DEG C or so laggard condensation liquid separation tanks 6 through heat exchanger 5, by the moisture and C in oil gas6More than
Hydrocarbon component condenses out, and avoids the frosting of condenser 7；Rise the condensed device 7 of oil gas in condensation liquid separation tank 6 and be cooled to -40 DEG C, oil
Most C in gas3Above hydrocarbon component condensation liquefaction.Condense the signal of the first fluid level transmitter 21 control on liquid separation tank 6 the
Five regulating valves 30, the oil gas reuse cabin 10 that condensate liquid is injected in oil tank 2.
The top exit non-congealable oil gas of condensation liquid separation tank 6 is transmitted to heat exchanger 5, and exporting oil gas heat exchange with oil gas compressor 4 rises
Temperature avoids infringement of the free fluid to film, also improved simultaneously to the laggard membrane separator 8 of 30 DEG C of fixed gas dew-point temperature is higher than
The small molecule infiltration rate such as oxygen, nitrogen.The membrane material of membrane separator 8 is preferentially passed through from air by the perforated membrane of type, fixed gas
Two streams are produced after membrane separator 8：One oozes residual air for enrichment oil gas with pressure to oil gas tank 9；Another burst infiltration gas be containing
The waste gas of a small amount of hydro carbons, gas concentration instrument 22 is provided with the waste gas outlet pipeline of membrane separator 8, when detecting that exhaust gas concentration is higher than
During its lower explosive limit concentration, open, the second regulating valve 32 is closed by the first regulating valve 31 for the control of gas concentration instrument 22, and waste gas is extremely
The entrance of oil gas compressor 4 circulation reprocessing；When detecting that exhaust gas concentration is less than its lower explosive limit concentration, gas concentration instrument
First regulating valve 31 is closed, the second regulating valve 32 is opened for 22 controls, introduces exhaust gas into qualified discharge after the burning disposal of combustion chamber 11.
Waste gas less than lower explosive limit concentration is not in backflash and explosion phenomenon, can directly enter ordinary combustion stove, in waste gas
Hydro carbons under the conditions of oxygen supply sufficient, more than 760 DEG C of temperature and 1 second or so residence time is met, be fully converted to titanium dioxide
Carbon and water directly discharge, and refinery's process units Furnace fully meets above-mentioned condition, therefore can will be less than explosion limit
The waste gas of least concentration mixes with Furnace combustion air, is burnt using burner with flame, can also will be less than pole of exploding
The waste gas for limiting least concentration introduces Furnace combustion chamber 11 from flame burning, and part heat can be provided for Furnace
Amount, also can thoroughly eliminate the hydro carbons including methane and be endangered to caused by environment.
The utility model uses Aspen process simulation and calculation softwares, and simulation is calculated at the oil gas under above-mentioned various working
Reason, obtained result of calculation are shown：NMHC removal efficiency >=97% in oil gas, the oil gas volumetric concentration for being enriched with oil gas are equal
The oil gas volumetric concentration formed higher than oil product natural evaporation, the oil gas volumetric concentration containing methane waste product are below the mixed of theoretical calculation
Close gas explosion limit lower limit volumetric concentration.The compression ratio and condensation temperature used according to different conditions, oil vapor treatment also has very
Big optimization space.
The enrichment oil gas that oil gas tank 9 stores is preferentially used for controlling the gaseous pressure in oil tank 2.Oil tank 2 is provided with gas phase pressure
Power transmitter 23, the second fluid level transmitter 24 and temperature transmitter 25, for monitoring the running status of oil tank 2, and signal are collected
To controller 26, controller 26 passes through the adjustment control of auto-adaptive parameter according to the operating process characteristic of oil tank 2, variation of ambient temperature
Make the 3rd regulating valve 33 to run, the gaseous pressure of enrichment oil gas control liquefaction tank 2 stored using oil gas tank 9.Such as：When oil tank 2 reaches
During to oil product storage setting high point liquid level, setting high point storage temperature (considering the change of environment temperature factor), controller 26 controls
3rd regulating valve 33 opens injection enrichment oil gas, and the gaseous pressure of oil tank 2 is adjusted to the highest point value (such as+1665Pa) of setting
Afterwards, controller 26 controls the 3rd regulating valve 33 to close；When the decline of the liquid level of oil tank 2 or temperature decline, the gaseous pressure of oil tank 2 is caused
The minimum point value (such as+25Pa) of setting is dropped to, controller 26 controls the 3rd regulating valve 33 to open regulation injection enrichment gas stream
Amount, maintain pressure range of the gaseous pressure of oil tank 2 more than the+25Pa of setting.Controller 26 can be by being controlled parameter value
Adjustment, enrichment oil sealing gland is stored in oil tank 2, maintains the gaseous pressure of oil tank 2 to avoid ambient atmos from entering oil tank in barotropic state
2, oil tank 2 " big breathing " Loss of Oil Evaporation caused by " small breathing " is eliminated to greatest extent.
Purging replaces gas in oil truck 1 before enrichment oil gas in oil gas tank 9 can be used for the charge of oil of oil truck 1, improves oil tank
The gas concentration of car 1, amount of evaporation of oil gas when reducing oil article vehicle.The first valve 34, the second valve 35, the 4th valve 37 are opened, is closed
The 3rd valve 36 is closed, is reached using being enriched with oil gas and purging gas in oil truck 1 to the balance lower cavity of liquid seal 3, gas pressure
During to+100Pa, the signal enabling oil gas compressor 4 of first pressure transmitter 20, above-mentioned oil vapor treatment system is fed gas into.
During 1 charge of oil of oil truck, the second valve 35, the 4th valve 37 are opened, the first valve 34, the 3rd valve 36 are closed, by oil truck 1
The oil gas of discharge is sent into the balance lower cavity of liquid seal 3.
Enrichment oil gas in oil gas tank 9 can be used for maintaining the gaseous pressure of oil truck 1 during 1 emptying of oil truck, avoid extraneous sky
Gas enters in oil truck 1, reduces amount of evaporation of oil gas when oil product is unloaded.As shown in figure 1, the second valve 35, the 3rd valve 36 are opened,
The first valve 34, the 4th valve 37 are closed, is malleation using being enriched with oil gas to maintain the gaseous pressure of oil truck 1；The emptying of oil truck 1 is complete
Bi Hou, the second valve 35, the 4th valve 37 are opened, close the first valve 34, the 3rd valve 36, start oil gas compressor 4 by oil
When oil gas in tank car 1 is evacuated to 0Pa, the signal of its first pressure transmitter 20 stops oil gas compressor 4 and run.
Its explosion limit upper concentration that is far above of gas concentration is enriched with oil gas tank 9, calorific value content is high, can be used as combustion
Expect that gas uses.The top of oil gas tank 9 is provided with second pressure transmitter 27, exceeds setup pressure value when being enriched with oil gas in oil gas tank 9
When, the signal of second pressure transmitter 27 controls the 4th regulating valve 38 to run, can be by the enrichment oil pneumatic transmission of superpressure part in oil gas tank 9
Enter fuel gas pipe network, the fuel gas as combustion chamber 11 uses.
Floating type oil gas reuse cabin 10 is provided with oil tank 2, oil gas reuse cabin 10 can float on liquid table in oil tank 2
Face, and moved up and down with liquid surface lifting, oil gas reuse cabin 10 and the outside of oil tank 2 pass through condensate liquid flexible duct and enrichment oil
Gas flexible duct connects, multiple scattered oilholes and air dispelling hole on oil gas reuse cabin 10, and condensate liquid and enrichment oil gas pass through oil gas reuse
The liquid surface of oil tank 2 is injected in cabin 10 so that drop, gas concentration at a temperature of the saturation oil-gas Layer of the neighboring area of oil gas reuse cabin 10
Rise, form over-saturation oil-gas Layer, prevent new oil vapour from generating and be beneficial to the liquefaction of oil gas, while also reduce to greatest extent
Oil gas disturbs in oil tank 2.The setting in oil gas reuse cabin 10 had both reduced oil evaporation surface area, and effectively inhibited oil gas
Evaporation.
The exhaust of oil of oil truck 1 is extremely balanced in liquid seal 3 to the lower cavity of liquid seal 3, the exhaust of oil of oil tank 2 is balanced
The gas-phase space in portion, the liquid layer of the centre of balance liquid seal 3 separate the petroleum system of oil truck 1 and oil tank 2.The row of oil truck 1
Deflation inevitably carries air, is directly entered oil vapor treatment system.Oil tank 2 utilizes the gas phase pressure of enrichment oil controlled atmosphere fuel-economizing tank 2
Power avoids the oil gas system that outside air enters oil tank 2 by balancing the logical air hydraulic layer 3b in liquid seal 3 in barotropic state
System, under normal operating condition, the petroleum system of oil tank 2 is the circulatory system of an independent single-phase flow, can constantly improve oil tank
Gas concentration in 2, reduce the amount of evaporation of oil gas of oil tank 2；Also oil supply gas processing system brings the benefit of maximum simultaneously, reduces oil gas
The treating capacity of processing system, improves compression+condensation process efficiency, UF membrane need to only discharge a small amount of air may be such that it is whole
Individual system is proved effective.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (8)
1. a kind of oil gas recovery processing system based on emission reduction control, it is characterised in that including balance liquid seal, oil gas compression
Machine, heat exchanger, condensing plant, membrane separator and combustion chamber；There is hydraulic layer, the balance liquid seal in the balance liquid seal
Bottom there is lower cavity, the oil gas of oil tank is connected to the top of balance liquid seal, and lower cavity is entered after hydraulic layer,
The oil gas of oil truck is connected to the lower cavity of the balance liquid seal, and the oil gas compressor connects the lower cavity, institute
The outlet connection heat exchanger of oil gas compressor is stated, the heat exchanger is connected to condensing plant, and the condensate liquid of the condensing plant goes out
Mouth is connected to the oil gas reuse cabin in oil tank, and the non-congealable oil gas outlet of the condensing plant is connected to heat exchanger and compressed with oil gas
The outlet oil gas heat exchange of machine is connected to membrane separator after being warming up to more than non-congealable oil gas dew-point temperature, and the membrane separator oozes
The gas concentration of vent outlet enters combustion chamber, the oil gas for oozing vent outlet of the membrane separator less than the waste gas of LEL
Concentration enters oil gas compressor higher than the waste gas of UEL, and the residual air of oozing of the membrane separator is connected to oil gas tank.
2. a kind of oil gas recovery processing system based on emission reduction control according to claim 1, it is characterised in that described flat
Weighing apparatus liquid seal is provided with first pressure transmitter, and the first pressure transmitter connects the lower cavity of the balance liquid seal,
The output signal connection oil gas compressor of the first pressure transmitter.
A kind of 3. oil gas recovery processing system based on emission reduction control according to claim 1, it is characterised in that the film
Separator is porous membrane separator, and the membrane separator oozes setting gas concentration instrument, the gas concentration instrument on vent outlet
Signal be divided into two-way, signal to the first regulating valve all the way, another way signal to the second regulating valve, the company of first regulating valve
The import of oil gas compressor is connected to, second regulating valve is connected to combustion chamber.
A kind of 4. oil gas recovery processing system based on emission reduction control according to claim 1, it is characterised in that the oil
Gas reuse cabin is floated in oil tank, and the oil gas reuse cabin is connected to by condensate liquid flexible duct and enrichment oil gas flexible duct
Outside oil tank, multiple scattered oilholes and air dispelling hole are set on the oil gas reuse cabin.
A kind of 5. oil gas recovery processing system based on emission reduction control according to claim 1, it is characterised in that the oil
Connected between gas tank and oil tank by being enriched with oil-gas pipeline, the oil tank is provided with the first control assembly, first control group
Part includes gaseous pressure transmitter, the second fluid level transmitter, temperature transmitter, the 3rd regulating valve and controller, the gas phase pressure
Power transmitter, the second fluid level transmitter, temperature transmitter, the signal of the 3rd regulating valve connect controller respectively, and the described 3rd adjusts
Section valve is arranged between enrichment oil-gas pipeline and oil gas reuse cabin.
A kind of 6. oil gas recovery processing system based on emission reduction control according to claim 1, it is characterised in that the oil
Connected between gas tank, oil truck and balance liquid seal by being enriched with oil-gas pipeline, the enrichment oil-gas pipeline is provided with the second control
Component processed, second control assembly include the first valve, the second valve, the 3rd valve, the 4th valve；First valve connects
It is connected between enrichment oil-gas pipeline and the bottom of oil truck, second valve and the 4th valve are connected to oil truck peace in turn
Between the liquid seal that weighs, one end of the 3rd valve is connected to the import of the first valve, and the other end is connected to the second valve and the
Between four valves.
A kind of 7. oil gas recovery processing system based on emission reduction control according to claim 1, it is characterised in that the oil
The top of gas tank is provided with second pressure transmitter and the 4th regulating valve, the output signal connection the 4th of the second pressure transmitter
Regulating valve, the oil gas tank are connected to combustion chamber by the 4th regulating valve.
8. a kind of oil gas recovery processing system based on emission reduction control according to claim 1, it is characterised in that described cold
Solidifying equipment includes condenser and condensation liquid separation tank, and the condenser is arranged in condensation liquid separation tank, is set on the condensation liquid separation tank
There is the first fluid level transmitter, the condensate outlet of the condensation liquid separation tank is provided with the 5th regulating valve.
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| CN201720345021.6U CN206721128U (en) | 2017-04-01 | 2017-04-01 | A kind of oil gas recovery processing system based on emission reduction control |
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| CN201720345021.6U CN206721128U (en) | 2017-04-01 | 2017-04-01 | A kind of oil gas recovery processing system based on emission reduction control |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106833742A (en) * | 2017-04-01 | 2017-06-13 | 安徽实华工程技术股份有限公司 | A kind of oil gas recovery processing system and method based on emission reduction control |
| CN113996154A (en) * | 2021-11-17 | 2022-02-01 | 烟台杰瑞石油装备技术有限公司 | Combustible gas circulation treatment equipment and combustible gas circulation treatment method |
| CN114345072A (en) * | 2021-12-03 | 2022-04-15 | 烟台杰瑞石油装备技术有限公司 | Vehicle-mounted combustible gas treatment equipment |
-
2017
- 2017-04-01 CN CN201720345021.6U patent/CN206721128U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106833742A (en) * | 2017-04-01 | 2017-06-13 | 安徽实华工程技术股份有限公司 | A kind of oil gas recovery processing system and method based on emission reduction control |
| CN106833742B (en) * | 2017-04-01 | 2019-03-19 | 安徽实华工程技术股份有限公司 | A kind of oil gas recovery processing system and method based on emission reduction control |
| CN113996154A (en) * | 2021-11-17 | 2022-02-01 | 烟台杰瑞石油装备技术有限公司 | Combustible gas circulation treatment equipment and combustible gas circulation treatment method |
| WO2023087506A1 (en) * | 2021-11-17 | 2023-05-25 | 烟台杰瑞石油装备技术有限公司 | Combustible gas recycling processing apparatus and combustible gas recycling processing method |
| CN114345072A (en) * | 2021-12-03 | 2022-04-15 | 烟台杰瑞石油装备技术有限公司 | Vehicle-mounted combustible gas treatment equipment |
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