CN205925325U - Oil gas recycling device - Google Patents
Oil gas recycling device Download PDFInfo
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- CN205925325U CN205925325U CN201620763040.6U CN201620763040U CN205925325U CN 205925325 U CN205925325 U CN 205925325U CN 201620763040 U CN201620763040 U CN 201620763040U CN 205925325 U CN205925325 U CN 205925325U
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- gas
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- carrier gas
- heat exchanger
- storage tank
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Abstract
The utility model belongs to the technical field of vapor recovery system, a oil gas recycling device is related to. The utility model provides an oil gas recycling device, including oil and gas gathering system, vapor recovery system system and carrier gas circulation system, wherein, the oil and gas gathering system includes that at least one oil tank, at least one one -level divide fluid reservoir and heat exchanger, and the vapor recovery system system includes that the second grade divides fluid reservoir, compressor and condenser, and carrier gas circulation system includes carrier gas tank, adsorption tower reconciliation cucurbitula. The utility model provides an oil gas recycling device adopts the closed recirculation design, and effluent gas cyclic utilization behind the vapor recovery system greatly reduces atmospheric pollutants's emission, and the oil rate of recovery can reach 100% basically, and the running cost is low, and investment recovery period is short, has apparent economic benefits and ecological benefits, is fit for popularizing and applying.
Description
Technical field
This utility model belongs to Investigation of Petroleum Vapor Recovery Technology field, is related to a kind of device for recovering oil and gas.
Background technology
The light-end products such as gasoline produce, storage, transportation and sale or use during, due to by temperature, air pressure, oil product
In storage tank, the impact of phase change in volume and other factors is understood some oil gas volatilization and is directly escaped into air and cause oil gas
Loss, not only results in environmental pollution, and brings economic loss, run into thundery sky and also can there is potential safety hazard.In recent years, with
Gradually enhancing, country and enterprise's environmental pollution pay attention to day by day of people's environmental consciousness, reduce oil product storage tank area gas
The discharge of pollutant, is environmental protection and a kind of important means improving Business Economic Benefit.
Existing Investigation of Petroleum Vapor Recovery Technology mainly includes absorption method, condensation method, membrane filter method, absorption method, and said method
Combination technique.It passes through to collect the oil gas that storage tank breather valve is discharged, through the methods such as absorption, condensation, membrane filtration or absorption, place
Tail gas after reason is discharged in air again.According to GB GB31570-2015《Petroleum refining industry pollutant emission standard》, stone
Oil refining enterprise atmosphere pollutants emission standardses are less than 120mg/m3 for NMHC, and organic efficiency is not less than 95%；Root
According to GB GB20950-2007《Storage tank farm atmosphere pollutants emission standardses》, storage tank farm atmosphere pollutants emission standardses are non-methane
Total hydrocarbon is less than 25g/m3, and organic efficiency is not less than 95%.And the tail gas after processing in existing Investigation of Petroleum Vapor Recovery Technology also contains
Micro organic pollution, it can reach the requirement of above-mentioned national regulations substantially, but the tail gas after processing is directly discharged to greatly
Still certain pollution can be caused to environment in gas, and invest big, high energy consumption, operating cost height, operating cost height and investment
Payoff period is long.
Utility model content
The purpose of this utility model aims to provide a kind of device for recovering oil and gas and its recovery method, and it is by after removing oil gas
Discharge gas recycles, exhaust of oil well below the discharge standard of national regulations, to solve to reclaim present in prior art
Rate is low, operating cost is high, the problem of investment payback time length.
For achieving the above object, the technical solution adopted in the utility model is：
A kind of device for recovering oil and gas, including：
Oil-gas recovery system, described oil-gas recovery system includes at least one oil product storage tank, at least one fraction flow container
And heat exchanger, it is provided with carrier gas inlet and breather valve at described oil product storage tank top, described breathing valve air gate passes through pipeline and institute
State a fraction flow container air inlet to be connected, the first entrance phase of pipeline and described heat exchanger is passed through in a described fraction flow container gas outlet
Even；
Gas recovery system for oil, described gas recovery system for oil includes two fraction flow containers, compressor and condenser, described two fraction
The air inlet of flow container is connected with the first outlet of described heat exchanger by pipeline, and pipeline is passed through in the gas outlet of described two fraction flow containers
It is connected with described condenser inlet, its connecting pipeline is provided with described compressor, the gas outlet of described condenser passes through pipe
Line is connected with the second entrance of heat exchanger, and the liquid outlet of described condenser is connected with the first outlet of heat exchanger by pipeline,
Or it is connected with the connecting pipeline of heat exchanger and two fraction flow containers；
Carrier gas blood circulation, described carrier gas blood circulation includes carrier gas tank, cucurbitula conciliate by adsorption tower, and described condenser is discharged
Gas and heat exchanger in oil gas heat exchange after discharge through the second outlet of heat exchanger, and the second outlet of described heat exchanger is led to
Cross pipeline to be connected with described carrier gas tank and described adsorption tower respectively, the second outlet connecting pipeline of described heat exchanger is provided with
Constituent content analyser and oxygen conten analyser, described carrier gas tank is connected with the carrier gas inlet of described oil product storage tank by pipeline,
Its connecting pipeline is provided with control valve, and described adsorption tower is passed through pipeline and is connected with described carrier gas tank reconciliation cucurbitula respectively.
The respiratory carrier with carrier gas as oil product storage tank for this utility model, reclaims oil gas, oil using condensation-adsorption combined technology
The respiratory system of product storage tank and gas recovery system for oil sealing and circulating, the tail gas after process enters carrier gas reservoir and follows as respiratory carrier
Ring utilizes.The device for recovering oil and gas that this utility model provides, using sealing and circulating design, will not suck the external world in oil product storage tank
Air, security risk is low, and the response rate can reach 100%, substantially achieves tail gas zero-emission, greatly meets national regulations
Require；Meanwhile, reduce material loss, isolation outside air avoids the pollution of material, and the production significantly reducing enterprise becomes
This.
Further, the second outlet of described heat exchanger and the connecting pipeline of described carrier gas tank are provided with carrier gas regulation valve,
Absorption regulating valve is provided with the connecting pipeline of the second outlet of described heat exchanger and described adsorption tower, described carrier gas regulation valve and
Described absorption regulating valve is all connected with the first Staged cotrol device, described first Staged cotrol device and described constituent content analyser phase
Even；
It is provided with circulating air regulating valve and discharge branch road, described row in described adsorption tower and the connecting pipeline of described carrier gas tank
Put branch road connection air or torch assembly, and discharge discharge gas regulating valve, described circulating air regulating valve are provided with branch road
All it is connected with the second Staged cotrol device with described discharge gas regulating valve, described second Staged cotrol device and described oxygen conten analyser
It is connected.
This utility model controls the non-congealable oil gas discharged from heat exchanger second outlet by way of point journey logic control, that is,
In the non-congealable oil gas of circulating carried, the volume content of organic hydrocarbon is less than 0.5%, when organic hydrocarbon in the non-congealable oil gas of circulating carried
Volume content be more than or equal to 0.5% when, open absorption regulating valve, the adsorption tower coming into operation equipped with activated carbon, through adsorption tower activity
Gas phase after charcoal removes non-congealable oil gas enters carrier gas tank, recycles；If the volume of organic hydrocarbon in the non-congealable oil gas of circulating carried
Content is less than 0.5%, then open carrier gas regulation valve, be directly entered carrier gas tank, recycles.Meanwhile, carrier gas is the inertia such as nitrogen
During gas, this utility model controls oxygen volume content in circulating carried to be less than also by a point mode for journey logic control
0.5%, when oxygen volume content is more than or equal to 0.5% in circulating carried, turn down circulating air regulating valve, open discharge controlled atmosphere section
Valve, under the conditions of carrier gas meets the discharge standard of national regulation, is vented in air or torch assembly, replacement cycles carrier gas
Middle oxygen content, until oxygen content is less than 0.5%, closes discharge gas regulating valve.The control mode that this utility model adopts can
Effectively guarantee organic hydrocarbon content of carrier gas and oxygen content in whole blood circulation, set content value is refined well below oil
Industrial air pollution thing discharge standard processed, reduces environmental pollution, and guarantees that the security and stability of process system runs, operation side
Just, safe and reliable.
Further, described control valve is direct-operated regulator, above described oil product storage tank；Described carrier gas tank passes through pipe
Line is connected with carrier gas supplementary device or carrier gas pipe network, and is provided with relief valve on described carrier gas tank.
For the oil product storage tank using nitrogen envelope design, suck nitrogen by direct-operated regulator control, design is sealed for nitrogen-free
Oil product storage tank, suck nitrogen by breather valve control；When in oil product storage tank, pressure is less than setting value, direct-operated regulator or exhale
Suction valve is opened and is filled into circulating carried from pressure, and when in oil product storage tank, pressure is higher than setting value, direct-operated regulator or breather valve close
Close, stop filling into circulating carried.This utility model passes through to set the pressure control range of direct-operated regulator, realizes losing in pressure
After control, direct-operated regulator can voluntarily adjust the pressure of storage tank according to the control pressure setting, and effectively prevents because of instrument or employee behaviour
Make the huge potential safety hazard that error brings.
Further, in the connecting pipeline of described adsorption tower and described carrier gas tank, or the second outlet of described heat exchanger with
It is provided with supercharger in the connecting pipeline of described carrier gas tank.
In this utility model, in order to reduce carrier gas discharge capacity, set in carrier gas connecting pipeline in gas recovery system for oil circulation
Put supercharger, increase buffer tank pressure, and then improve carrier gas buffer capacity.When carrier gas buffer tank pressure is less than determinated low limit value
When, supplemented by full factory carrier gas pipe network or carrier gas preparation facilitiess；If buffer tank pressure is higher than to set ceiling value, pass through programme-control
Open adsorption tower emptying regulating valve pressure release.
Further, described compressor is inverter compressor, the frequency conversion in described two fraction flow containers and inverter compressor
Device cascade arrangement.
In this utility model, the pressure of oil-gas recovery system is controlled by two fraction flow containers, and the pressure of two fraction flow containers with
Converter cascade arrangement, controls oil-gas recovery system pressure to be less than the breath pressure that breather valve sets.When oil product storage tank exhalation
Oil and gas content increases, the pressure rise of two fraction flow containers, can increase the operating load of compressor by improving frequency conversion electric current, maintain two
The pressure of fraction flow container is constant.
Further, the liquid outlet of a described fraction flow container is connected with described oil product storage tank bottom liquid inlet mouth by pipeline, its
First delivery pump and the first regulating valve are provided with connecting pipeline；
The liquid outlet of described two fraction flow containers is connected with recovered liquid storage tank by pipeline, and its connecting pipeline is provided with
Two delivery pumps and the second regulating valve.
In this utility model, liquid that a fraction flow container and two fraction flow containers condense out by delivery pump pass through pipeline and
Regulating valve is delivered to corresponding oil product storage tank and recovered liquid storage tank, and its delivery pump is chain with liquidometer in point flow container, by tank
Limit Liquid level delivery pump automatic start-stop, easy and simple to handle, high degree of automation, and improve work efficiency.
Further, described oil product storage tank includes least one set oil product storage tank, and every group of oil product storage tank includes at least one oil product
Storage tank, and oil types stored by every group of oil product storage tank are different, a described fraction flow container and number and oil product storage tank group
Number corresponding, the connection corresponding with each group oil product storage tank of each fraction flow container, and the connection of the gas outlet of each fraction flow container
Pipeline is connected with the first entrance of heat exchanger after collecting.
In this utility model, according to the distribution of tank group and storage material kind, identical with material kind set according to tank group is close
Put independent oil-gas recovery system.That is, how many group of oil product storage tank just arranges how many fraction flow containers, each group oil product
The oil gas of storage tank release is pooled to each fraction flow container, and the condensed fluid in a fraction flow container returns again in corresponding oil product storage tank；
And oil-containing gases that each fraction flow container is discharged are common after converging enters heat exchange in heat exchanger, such that it is able to save energy,
Reduce operating cost, energy-saving.
Further, described carrier gas is nitrogen or air.
For different types of oil product, different carrier gas may be selected as the respiratory carrier of oil product storage tank, for safety
Can have high demands, it is carrier gas that easily oxidized oil product may be selected inert nitrogen；And it is less demanding for oxygen content in system
Oil product, optional air, as the respiratory carrier of storage tank, reduces operating cost, and the condition design of whole device relaxes, small investment.
As the further preferred technical scheme of this utility model, described condenser is connected with refrigerator, and described cold
Condenser is all connected with serials control equipment with refrigerator.Refrigerant flow is adjusted according to design temperature, and then controls condenser
Temperature, and the temperature of condenser, according to the content of organic hydrocarbon in oil-containing gases and composition, controls in condensed oil-containing gases
C5 +The organic hydrocarbon response rate >=95%.
As the further preferred technical scheme of this utility model, described adsorption tower is the first absorption in parallel of structure identical
Tower and the second adsorption tower, described first adsorption tower and the second adsorption tower stagger and realize the friendship in turn of absorption phase and regeneration stage
Replace.When the first adsorption tower runs, oil gas is reclaimed in the second adsorption tower evacuation regeneration, and pressurising after regeneration enters working condition of awaiting orders
Standby；After the first adsorption tower adsorption saturation, switching second adsorption tower runs, such alternate run.
As the further preferred technical scheme of this utility model, the second outlet connecting pipeline of described heat exchanger is provided with props up
Road, described branch road is connected with torch assembly；Described solution cucurbitula is connected with described torch assembly or fuel pipe network by pipeline, its
Connecting pipeline is provided with vacuum pump.
As the further preferred technical scheme of this utility model, described heat exchanger adopts a heat exchanger or multiple structure
The heat exchanger of identical series connection.According to the demand of various heat exchange amount, and in condenser temperature setting, optionally set
The number of heat exchanger, to meet heat exchange demand in system, and adopt multiple stage heat exchanger series connection when, oil gas enter heat exchanger entrance and
The mode of outlet also can make corresponding adjustment, depending on practical situation, just repeat no more herein.
This utility model also provides a kind of oil-gas recovery method, using the petroleum vapor recovery dress described in above-mentioned utility model content
Put and carry out petroleum vapor recovery, using sealing and circulating carrier gas as storage tank respiratory carrier, comprise the following steps：
(1) when the pressure in oil product storage tank reaches breather valve arranges value, breather valve is opened, and oil-containing gases go out through breather valve
QI KOU is pooled to a fraction flow container, and the condensed lime set of low-volatile oil-containing gases is back to oil product storage tank, and fixed gas enters and changes
Hot device；
(2) fixed gas entering heat exchanger enters two fraction flow containers after heat exchanger heat exchange, and two fraction flow containers are discharged
Oil-containing gases enter condenser after compressor boost, and condensed lime set is back to heat exchanger, is mixed into fixed gas
Two fraction flow containers, condenser expellant gas through with fixed gas heat exchange in heat exchanger after entered by the second outlet of heat exchanger
Enter carrier gas blood circulation；
(3) detected through not coagulating organic hydrocarbon body in the second outlet expellant gas of heat exchanger according to constituent content analyser
When long-pending content is less than or equal to 0.5%, gas enters carrier gas tank, and the gas in carrier gas tank enters oil product storage tank circulation through carrier gas inlet
Use；When its volume content is more than 0.5%, gas enters adsorption tower, and removing enters back into carrier gas tank after not coagulating organic hydrocarbon, circulation
Use.
Further, further comprising the steps of in above-mentioned oil-gas recovery method, carrier gas is nitrogen, is examined according to oxygen conten analyser
Measure enter carrier gas tank before carrier gas in oxygen volume content be more than 0.5% when, the second outlet expellant gas through heat exchanger
Enter adsorption tower, and open discharge gas regulating valve, turn down absorption regulating valve, the gas after adsorption cleaning is emitted into torch
In device or air, oxygen in replacement cycles carrier gas system, until oxygen volume content is less than or equal to 0.5%, close discharge
Gas regulating valve.
Compared with prior art, the beneficial effects of the utility model are：
1st, this utility model adopts sealing and circulating to design, and the respiratory carrier with nitrogen or air as oil product storage tank, using cold
Solidifying-adsorption combined technology reclaims oil gas, and the nitrogen after removing oil gas or air containment recycle, and saves nitrogen or air is used
Amount, greatly reduces the discharge of atmosphere pollution, well below the discharge standard of national regulations, Oil Recovery rate can reach
100%, greatly reduce operating cost, be that enterprise brings huge economic benefit.
2nd, in blood circulation of the present utility model, organic hydrocarbon content and oxygen content in effective control circulating carried, institute
The content value setting is lower 43 times than storage tank farm atmosphere pollutants emission standardses, ratio petroleum refining industry atmosphere pollutants emission standardses
Low more than 8000 times.The design condition of whole retracting device relaxes, and equipment investment is few, and operating cost is low, and the investment payback time is short.
3rd, this utility model provides device for recovering oil and gas and recovery method, can completely cut off outside air and enter storage tank, realize
The essential safety of running gear, it is to avoid in storage tank, material is contaminated, security risk is low, reduces material loss, energy-conserving and environment-protective are again
Safe and reliable, there are significant economic benefit and ecological benefits, suitable popularization and application.
Brief description
In order to be illustrated more clearly that this utility model specific embodiment or technical scheme of the prior art, below will be right
In specific embodiment or description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, below describe
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
The petroleum vapor recovery process flow diagram that Fig. 1 provides for this utility model.
Reference：
1- oil product storage tank；2- mono- fraction flow container；3- heat exchanger；
4- bis- fraction flow container；5- compressor；6- condenser；
7- carrier gas tank；8- adsorption tower；9- solves cucurbitula；
10- breather valve；11- control valve；12- liquidometer；
13- first regulating valve；14- first delivery pump；15- second regulating valve；
16- second delivery pump；17- converter；18- refrigerator；
19- constituent content analyser；20- carrier gas regulation valve；21- adsorbs regulating valve；
22- oxygen conten analyser；23- circulating air regulating valve；24- discharges gas regulating valve；
25- supercharger；26- relief valve；27- vacuum pump；
28- recovered liquid storage tank；29- first torch assembly；30- fuel pipe network or the second torch assembly；
31- the 3rd torch assembly；32- carrier gas supplementary device or carrier gas pipe network.
Specific embodiment
Purpose, technical scheme and advantage for making this utility model embodiment are clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described it is clear that described to the technical scheme in this utility model embodiment
Embodiment be only a part of embodiment of this utility model, rather than whole embodiment.Generally described in accompanying drawing herein
Can be arranged with various different configurations with the assembly of this utility model embodiment illustrating and design.Therefore, below to
The detailed description of the embodiment of the present utility model providing in accompanying drawing is not intended to limit claimed model of the present utility model
Enclose, but be merely representative of selected embodiment of the present utility model.Based on embodiment of the present utility model, those skilled in the art exist
The every other embodiment being obtained on the premise of not making creative work, broadly falls into the scope of this utility model protection.
Using carrier gas as storage tank respiratory carrier in this utility model, utilize through petroleum vapor recovery Posterior circle, example below
Middle by nitrogen buffer gas, the utility model is described in more detail, but it is to carry that this utility model is equally applicable to air
The retracting device of gas.
Embodiment
The petroleum vapor recovery process flow diagram that Fig. 1 provides for this utility model, as shown in figure 1, what the present embodiment provided
Device for recovering oil and gas, including oil-gas recovery system, gas recovery system for oil and carrier gas blood circulation, wherein, oil-gas recovery system bag
Include oil product storage tank 1, a fraction flow container 2 and heat exchanger 3, gas recovery system for oil includes two fraction flow containers 4, compressor 5 and condenser
6, carrier gas blood circulation includes carrier gas tank 7, cucurbitula 9 conciliate by adsorption tower 8, and in the present embodiment, carrier gas tank 7 is nitrogen pot, each system
The annexation of middle device is as follows：
Breather valve 10 gas outlet of oil product storage tank 1 top setting is connected with a fraction flow container 2 air inlet, a fraction flow container 2
Gas outlet is connected with the first entrance of heat exchanger 3, and the liquid outlet of a fraction flow container 2 oil product storage tank 1 bottom corresponding thereto is entered
Liquid mouth is connected, and is provided with the first delivery pump 14 and the first regulating valve 13 in its connecting pipeline, and the first delivery pump 14 and
Liquidometer 12 in fraction flow container 2 is chain.
The first outlet of heat exchanger 3 is connected with the air inlet of two fraction flow containers 4, the gas outlet of two fraction flow containers 4 and condensation
Device 6 entrance is connected, and its connecting pipeline is provided with compressor 5, and compressor 5 is inverter compressor, and two fraction flow containers 4 with
Converter 17 cascade arrangement in inverter compressor；The liquid outlet of two fraction flow containers 4 is connected with recovered liquid storage tank 28, and it is even
Liquid in second delivery pump 16 and the second regulating valve 15, and the second delivery pump 16 and two fraction flow containers 4 is provided with adapter line
Position meter 12 is chain；The gas outlet of condenser 6 is connected with the second entrance of heat exchanger 3, the liquid outlet of condenser 6 and heat exchanger
3 first outlet is connected, or is connected with the connecting pipeline of heat exchanger 3 and two fraction flow containers 4.Condenser 6 and refrigerator 18 phase
Connect, and condenser 6 is all connected with serials control equipment with refrigerator 18.
The second outlet of heat exchanger 3 is connected with carrier gas tank 7 and adsorption tower 8 respectively by connecting pipeline, and in heat exchanger 3
Constituent content analyser 19 and oxygen conten analyser 22 are provided with second outlet connecting pipeline, carrier gas tank 7 is pushed up with oil product storage tank 1
The carrier gas inlet of portion's setting is connected, and its connecting pipeline is provided with control valve 11, and control valve 11 is direct-operated regulator, positioned at oil product
Above storage tank 1, adsorption tower 8 is conciliate cucurbitula 9 with carrier gas tank 7 respectively and is connected, in the connecting pipeline of adsorption tower 8 and carrier gas tank 7, or
It is provided with supercharger 25 in the second outlet of heat exchanger 3 and the connecting pipeline of carrier gas tank 7.Carrier gas tank 7 and carrier gas supplementary device or
Person's carrier gas pipe network 32 is connected, and is provided with relief valve 26 on carrier gas tank 7.
Carrier gas regulation valve 20 is provided with the connecting pipeline of the second outlet of heat exchanger 3 and carrier gas tank 7, the of heat exchanger 3
Absorption regulating valve 21 is provided with two outlets and the connecting pipeline of adsorption tower 8, carrier gas regulation valve 20 and absorption regulating valve 21 all with
First Staged cotrol device connects, and the first Staged cotrol device is connected with constituent content analyser 19.Adsorption tower 8 and the company of carrier gas tank 7
Circulating air regulating valve 23 and discharge branch road are provided with adapter line, discharge branch road connects the 3rd torch assembly 31 or directly puts
Sky, and discharge and be provided with discharge gas regulating valve 24 on branch road, circulating air regulating valve 23 and discharge gas regulating valve 24 are all with second
Staged cotrol device connects, and the second Staged cotrol device is connected with oxygen conten analyser 22.
Heat exchanger 3 is a heat exchanger 3 or the heat exchanger 3 of multiple structure identical series connection.The second outlet of heat exchanger 3
Connecting pipeline is provided with branch road, and branch road is connected with the first torch assembly 29；Solution cucurbitula 9 passes through pipeline and fuel pipe network or the second fire
Torch device 30 connects, and its connecting pipeline is provided with vacuum pump 27.Adsorption tower 8 is the first in parallel adsorption tower of structure identical and the
Two adsorption towers, the first adsorption tower and the second adsorption tower stagger and realize the one after the other of absorption phase and regeneration stage.
The method that this utility model carries out petroleum vapor recovery using above-mentioned device for recovering oil and gas, comprises the following steps：
(1) raise with temperature or oil product storage tank 1 feeds, in oil product storage tank 1, mass expanded or liquid level rise, top gas phase
Space pressure increases.When the pressure in oil product storage tank 1 reaches breather valve 10 arranges value, breather valve 10 is opened, oil-containing gases warp
Breathing valve air gate is pooled to a fraction flow container 2, and low-volatile oil-containing gases condense out on a small quantity, and condensed lime set is by first
Delivery pump 14 returns to oil product storage tank 1, and fixed gas enters heat exchanger 3 after collecting.
(2) enter the cryogenic gas heat exchange recovery that fixed gas and the condenser in gas recovery system for oil 6 of heat exchanger 3 discharge cold
Amount, then mix with the condensed fluid of condenser 6 recovery, the cold of withdrawal liquid, then enter two fraction flow containers 4.Two fraction liquid
In oil-containing gases in tank 4, the higher organic hydrocarbon of condensation point condenses out, and condensed lime set returns to recovery by the second delivery pump 16
Liquid storage tank 28, the oil-containing gases that two fraction flow container 4 is discharged then enter condenser 6 after compressor 5 supercharging, by condenser
6 condensed lime sets are back to heat exchanger 3, are mixed into two fraction flow containers 4 with fixed gas, and condenser 6 expellant gas pass through
With after fixed gas heat exchange in heat exchanger 3, carrier gas blood circulation is entered by the second outlet of heat exchanger 3.
It should be noted that in the present embodiment, with industrial nitrogen as carrier, vapor content is relatively low, heat exchanger 3 can not consider
Design defrosting facility；Heat exchanger 3 is reclaimed on the basis of cold by maximum, need not control the heat-exchange temperature of cold and hot gas, as far as possible
Reduce operating cost.The pressure of oil-gas recovery system is controlled by two fraction flow containers 4, the pressure of two fraction flow containers 4 and converter 17
Tandem, controls oil-gas recovery system pressure to be less than the breath pressure that breather valve 10 sets.When the oil and gas content of oil product storage tank 1 exhalation increases
Plus, two fraction flow container 4 pressure rise, improves frequency conversion electric current and increases compressor 5 operating load, maintain two fraction flow container 4 pressure permanent
Fixed.
(3) according to the restriction safety requirements of fuel gas in petrochemical industry inert nitrogen, set organic hydrocarbon in circulating nitrogen gas
Volume content is less than 0.5%.If organic hydrocarbon content exceedes setting value in condensed oil-containing gases, come into operation adsorption tower 8
After-treatment.Adsorption tower 8 is different to the absorption affinity of activated carbon from nitrogen according to organic hydrocarbon, reclaims uncooled lightweight organic
Hydrocarbon, reduces the organic hydrocarbon content in circulating nitrogen gas, meets safety requirements.
Specifically, utilize with nitrogen circulation, in system, lightweight organic hydrocarbon gradually accumulates, according to constituent content analyser 19
When detecting through not coagulating organic hydrocarbon volume content less than or equal to 0.5% in the second outlet expellant gas of heat exchanger 3, divide program control
System opens carrier gas regulation valve 20, and gas enters carrier gas tank 7, and the gas in carrier gas tank 7 enters oil product storage tank 1 through nitrogen inlet and circulates
Use；When its volume content is more than 0.5%, Staged cotrol opens absorption regulating valve 21, turns down carrier gas regulation valve 20, gas enters
Enter adsorption tower 8, the organic hydrocarbon that do not coagulate in oil-containing gases adsorbs on acticarbon, and the purification gas of organic hydrocarbon are not coagulated in removing
Enter back into carrier gas tank 7, the safe handling meeting circulating nitrogen gas requires, and is circulated use.
It should be noted that in the present embodiment, because oil product storage tank 1 Big and Small Breath is unstable, frequency conversion control taken by compressor 5
System, converter 17 and two fraction flow container 4 pressure tandem, compressor 5 outlet pressure sets according to the pressure of circulating carried tank 7,
Under elevated pressures, be conducive to organic hydrocarbon condensation in oil-containing gases, energy consumption high with respect to the operation temperature of normal pressure condensation recycling method
Low.
(4) it is to reach essential safety, control oxygen volume content in circulating nitrogen gas to be less than 0.5%.Divided according to oxygen content
When analyzer 22 detects the Oxygen in Nitrogen volume content before entering carrier gas tank 7 more than 0.5%, the second outlet through heat exchanger 3
Expellant gas enter adsorption tower 8, and open discharge gas regulating valve 24, turn down absorption regulating valve 21, will be after adsorption cleaning
Gas, under conditions of meeting national air pollution emission thing discharge standard, be emitted into the 3rd torch assembly 31 or directly
Emptying, the oxygen in replacement cycles nitrogen system, until oxygen volume content is less than or equal to 0.5%, close discharge gas regulating valve
24.
It should be noted that in the present embodiment, the design volume of carrier gas tank 7 and pressure according to enterprise's device working ability,
The volume of gas recovery system for oil storage tank and the method for operation of logistics turnover, consider investment and are optimized design with cost.For
Minimizing carrier gas discharge capacity, arranges supercharger 25 on gas recovery system for oil circulating carried pipeline, increases carrier gas tank 7 pressure, carries
High carrier gas buffer capacity.When carrier gas tank 7 pressure is less than determinated low limit value (such as design 0.2MPa (g)), by carrier gas supplementary device
Or carrier gas pipe network 32 supplements.If carrier gas tank 7 pressure is higher than to set ceiling value, adsorption tower 8 emptying is opened by programme-control and adjusts
Section valve pressure release.
Finally it should be noted that：Embodiment described above, specific embodiment only of the present utility model, in order to illustrate this
The technical scheme of utility model, is not intended to limit, and protection domain of the present utility model is not limited thereto, although with reference to aforementioned
Embodiment has been described in detail to this utility model, it will be understood by those within the art that：Any it is familiar with this skill
, in the technical scope that this utility model discloses, it still can be to the skill described in previous embodiment for the technical staff in art field
Art scheme is modified or can be readily occurred in change, or carries out equivalent to wherein some technical characteristics；And these modifications,
Change or replacement, do not make the essence of appropriate technical solution depart from spirit and the model of this utility model embodiment technical scheme
Enclose.All should cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be wanted with described right
The protection domain asked is defined.
Claims (10)
1. a kind of device for recovering oil and gas is it is characterised in that include：
Oil-gas recovery system, described oil-gas recovery system includes at least one oil product storage tank, a fraction flow container and heat exchanger, in institute
State oil product storage tank top and be provided with carrier gas inlet and breather valve, described breathing valve air gate is entered with a described fraction flow container by pipeline
QI KOU is connected, and a described fraction flow container gas outlet is connected with the first entrance of described heat exchanger by pipeline；
Gas recovery system for oil, described gas recovery system for oil includes two fraction flow containers, compressor and condenser, described two fraction flow containers
Air inlet be connected with the first outlet of described heat exchanger by pipeline, pipeline and institute are passed through in the gas outlet of described two fraction flow containers
State condenser inlet to be connected, its connecting pipeline be provided with described compressor, the gas outlet of described condenser pass through pipeline with
The second entrance of heat exchanger is connected, and the liquid outlet of described condenser is connected with the first outlet of heat exchanger by pipeline, or
It is connected with the connecting pipeline of heat exchanger and two fraction flow containers；
Carrier gas blood circulation, described carrier gas blood circulation includes carrier gas tank, cucurbitula conciliate by adsorption tower, and the second of described heat exchanger goes out
Mouth is connected with described carrier gas tank and described adsorption tower respectively by pipeline, sets in the second outlet connecting pipeline of described heat exchanger
It is equipped with constituent content analyser and oxygen conten analyser, described carrier gas tank passes through the carrier gas inlet phase of pipeline and described oil product storage tank
Even, its connecting pipeline is provided with control valve, and described adsorption tower is passed through pipeline and is connected with described carrier gas tank reconciliation cucurbitula respectively.
2. device for recovering oil and gas according to claim 1 is it is characterised in that the second outlet of described heat exchanger and described load
Carrier gas regulation valve is provided with the connecting pipeline of gas tank, in the connecting pipeline of the second outlet of described heat exchanger and described adsorption tower
It is provided with absorption regulating valve, described carrier gas regulation valve and described absorption regulating valve are all connected with the first Staged cotrol device, described
One Staged cotrol device is connected with described constituent content analyser；
It is provided with circulating air regulating valve and discharge branch road, described discharge is propped up in described adsorption tower and the connecting pipeline of described carrier gas tank
Road connection air or torch assembly, and discharge discharge gas regulating valve, described circulating air regulating valve and institute are provided with branch road
State discharge gas regulating valve to be all connected with the second Staged cotrol device, described second Staged cotrol device and described oxygen conten analyser phase
Even.
3. device for recovering oil and gas according to claim 1 it is characterised in that described control valve be direct-operated regulator, position
Above described oil product storage tank；Described carrier gas tank is connected with carrier gas supplementary device or carrier gas pipe network by pipeline, and described
Relief valve is provided with carrier gas tank.
4. device for recovering oil and gas according to claim 2 is it is characterised in that the connection of described adsorption tower and described carrier gas tank
On pipeline, or it is provided with supercharger in the connecting pipeline of the second outlet of described heat exchanger and described carrier gas tank.
5. device for recovering oil and gas according to claim 1 it is characterised in that described compressor be inverter compressor, institute
State the converter cascade arrangement in two fraction flow containers and inverter compressor.
6. device for recovering oil and gas according to claim 1 is it is characterised in that the liquid outlet of a described fraction flow container passes through pipe
Line is connected with described oil product storage tank bottom liquid inlet mouth, and its connecting pipeline is provided with the first delivery pump and the first regulating valve；
The liquid outlet of described two fraction flow containers is connected with recovered liquid storage tank by pipeline, its connecting pipeline is provided with second defeated
Send pump and the second regulating valve.
7. device for recovering oil and gas according to claim 1 is it is characterised in that described oil product storage tank includes least one set oil product
Storage tank, every group of oil product storage tank includes at least one oil product storage tank, and the oil types stored by every group of oil product storage tank are different, described
One fraction flow container with number corresponding with the group number of oil product storage tank, each fraction flow container company corresponding with each group oil product storage tank
Connect, and the connecting pipeline of the gas outlet of each fraction flow container collect after be connected with the first entrance of heat exchanger.
8. the device for recovering oil and gas according to any one of claim 1～7 is it is characterised in that described carrier gas is nitrogen or sky
Gas.
9. device for recovering oil and gas according to claim 1 is it is characterised in that described condenser is connected with refrigerator, and
And described condenser is all connected with serials control equipment with refrigerator.
10. device for recovering oil and gas according to claim 1 is it is characterised in that described adsorption tower is the parallel connection of structure identical
The first adsorption tower and the second adsorption tower, described first adsorption tower and the second adsorption tower stagger and realize absorption phase and regeneration stage
One after the other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620763040.6U CN205925325U (en) | 2016-07-20 | 2016-07-20 | Oil gas recycling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620763040.6U CN205925325U (en) | 2016-07-20 | 2016-07-20 | Oil gas recycling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205925325U true CN205925325U (en) | 2017-02-08 |
Family
ID=57926484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620763040.6U Withdrawn - After Issue CN205925325U (en) | 2016-07-20 | 2016-07-20 | Oil gas recycling device |
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| Country | Link |
|---|---|
| CN (1) | CN205925325U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106039915A (en) * | 2016-07-20 | 2016-10-26 | 谢玉勋 | Oil and gas recovery device and recovery method thereof |
| CN112429418A (en) * | 2020-11-04 | 2021-03-02 | 中国石油天然气集团有限公司 | Treatment system for volatile organic compounds in storage tank |
| CN114608266A (en) * | 2022-02-25 | 2022-06-10 | 南通亚泰工程技术有限公司 | Oil gas recovery device capable of rapidly refrigerating and defrosting |
-
2016
- 2016-07-20 CN CN201620763040.6U patent/CN205925325U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106039915A (en) * | 2016-07-20 | 2016-10-26 | 谢玉勋 | Oil and gas recovery device and recovery method thereof |
| CN106039915B (en) * | 2016-07-20 | 2018-12-11 | 谢玉勋 | Device for recovering oil and gas and its recovery method |
| CN112429418A (en) * | 2020-11-04 | 2021-03-02 | 中国石油天然气集团有限公司 | Treatment system for volatile organic compounds in storage tank |
| CN112429418B (en) * | 2020-11-04 | 2023-02-24 | 中国石油天然气集团有限公司 | Treatment system for volatile organic compounds in storage tank |
| CN114608266A (en) * | 2022-02-25 | 2022-06-10 | 南通亚泰工程技术有限公司 | Oil gas recovery device capable of rapidly refrigerating and defrosting |
| CN114608266B (en) * | 2022-02-25 | 2024-04-12 | 南通亚泰工程技术有限公司 | Oil gas recovery device capable of rapidly refrigerating and defrosting |
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