CN109178697A - A kind of multi-purpose station oil tank top gas and harbour gas recovery system for oil - Google Patents
A kind of multi-purpose station oil tank top gas and harbour gas recovery system for oil Download PDFInfo
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- CN109178697A CN109178697A CN201810958410.5A CN201810958410A CN109178697A CN 109178697 A CN109178697 A CN 109178697A CN 201810958410 A CN201810958410 A CN 201810958410A CN 109178697 A CN109178697 A CN 109178697A
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- Prior art keywords
- oil
- gas
- tank
- harbour
- making machine
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
- B65D90/30—Recovery of escaped vapours
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention discloses a kind of multi-purpose station oil tank top gas and harbour gas recovery system for oil, the present invention is by introducing storage tank tank field, water seal arrangement, in the state of keeping each oil storage tank pressure balance, by being recycled to oil storage tank tank deck and harbour oil carrier Volatile Gas, after Volatile Gas filters out air and inert gas by absorption type device for recovering oil and gas, lime set in outlet pipe is separated by separator, it is pressurized into fuel gas compressor, it then cools down by natural gas dryer, finally burns for heating furnace.Harbour is equipped with nitrogen making machine group, inerting oil carrier cargo tank and system pressure balance, it can be achieved that energy conservation, emission reduction, the purpose to reduce environmental pollution, are effectively saved needed for heating equipment fuel of using by oneself in the present invention.
Description
Technical field
The present invention relates to be related to oil-gas field surface engineering field, and in particular to a kind of multi-purpose station oil tank top gas and harbour
Gas recovery system for oil.
Background technique
To handle oil mass more due to entering the station for some oil-gas field surface engineerings, and is closed process with pressure, has in oil a certain amount of
Solution gas, live crude is stored in closed oil storage tank, after the operation such as heated, continuous oil inlet, roof volatilize compared with
More head space gas, causes emission to be unsatisfactory for environmental protection code requirement, and emission severely exceeds, exists and seriously pollute big compression ring
The phenomenon that border, and waste of resource.
Summary of the invention
Oil storage tank tank deck Volatile Gas can be recycled the purpose of the present invention is to provide one kind and loading dock oil carrier volatilizees
The gas recovery system for oil of gas recycling avoids exhaust of oil, pollution environment, achievees the effect that higher energy-saving and emission-reduction.
The technical scheme is that a kind of multi-purpose station oil tank top gas and harbour gas recovery system for oil, including successively
Nitrogen making machine group outside the station of connection, absorption type device for recovering oil and gas, separator, stand in fuel gas compressor, drier, oil expeller,
Storage tank tank field is in parallel with outer nitrogen making machine group of standing, and is equipped with water seal arrangement in parallel, oil removing between storage tank tank field and outer nitrogen making machine group of standing
Device is connected to heating furnace,
(1) it stands outer nitrogen making machine group: by the nitrogen making machine tonifying Qi in Inert Tanks pipe-line system；
When crude oil is loaded onto ship, nitrogen is added in charge of oil ship, makes the oxygen-containing gas concentration of oil carrier Volatile Gas collected below 8%；
When crude oil is not loaded onto ship, Volatile Gas supplement or setting downstream pressure 100Pa, with nitrogen making machine tonifying Qi；
(2) absorption type device for recovering oil and gas: mixed oil and gas enters adsorption system and is adsorbed, and air and inert gas are up to standard
After discharge；
Wherein, adsorption system includes the structure of two adsorption tanks of A/B composition, and alternately absorption --- parsing --- cleans
Process, under normal pressure the oil-gas component in A tank absorption gaseous mixture, after adsorption saturation, system cuts B tank automatically and carries out at absorption
Reason, while A tank carries out vacuum analysis, regenerates adsorbent；Oil gas, which is adsorbed, to be left, and is compressed, is dried, cooling down, point
Separate out most of water and light oil, light oil.
Further technical solution, the oil storage tank in storage tank tank field are connected by breather valve with safety valve with atmosphere, setting
It breathes valve exhaust and superfeed pressure upper lower limit value is 2000Pa/-250Pa, exhaled when pressure inside the tank is greater than breathing valve opening pressure
It inhales valve to open, gas in blowdown vessel；Breather valve is automatically opened when gas pressure is less than breathing valve inlet pressure setting value in tank,
Cover gas into tank.
Beneficial effects of the present invention:
1, the present invention feeds them into absorption type device for recovering oil and gas by the recycling to head space gas and harbour oil gas, separates
Air and inert gas out enter heating furnace after entering back into fuel gas compressor pressurization, for its burning.Oil carrier when solving charge of oil
The recycling problem of gas, effective protection surrounding enviroment meet safety in production, construct harmonious relationship between industry and agriculture, realize energy conservation
The target that emission reduction, green low-carbon are developed production.
2, pass through " using harbour oil carrier gas as the supplement gas of shipment oil tank " and set " absorption type in recovery system of the present invention
Device for recovering oil and gas " separates the technologies such as air and inert gas, and wherein absorption type device for recovering oil and gas integrally uses skid-mounted type knot
Structure, each system are fully integrated into sledge block, and scene only needs to dock gas gathering manifold and unit, give equipment distribution.Sledge block is not by
It becomes rusty outer steel shell design, not only anti-corrosion but also beautiful.Present invention process is advanced, safe and reliable to operation, each equipment enclosed in this recovery system
Circular flow, energy saving are high；Process equipment auto-control degree is high.And use DCS Distributed Control System, overall monitoring
Operating parameter state, flow chart Dynamically Announce, fault alarm, trend record show etc. that functions protect production process effectively
Barrier.
Detailed description of the invention
Fig. 1 is flow diagram of the present invention.
Specific embodiment
Below by non-limiting embodiment, the present invention is further explained, understands the present invention.
The present invention reduces continent city joint using the oil gas in the loading dock oil carrier of continent city as the supplement gas of shipment oil tank
The investment for big tank tonifying Qi process of standing, while being not required to separately build harbour gas recovering device.
As shown in Figure 1, nitrogen making machine group outside the sequentially connected station of the present invention, absorption type device for recovering oil and gas, separator, stand in
Fuel gas compressor, drier, oil expeller, oil expeller are connected to heating furnace, and storage tank tank field is in parallel with outer nitrogen making machine group of standing, storage tank
Water seal arrangement in parallel is equipped between tank field and outer nitrogen making machine group of standing, water seal arrangement is a kind of setting for guarantee storage tank operational safety
It applies, when tank deck atmospheric pressure is more than this value, water seal arrangement pressure release, the safety of protective pot.Wherein, water seal arrangement sets vent pressure
1200~1400Pa；The nominal volume flow of natural gas compressor is 2Nm3/ min, pressure of inspiration(Pi) are 0.2~0.5KPa, exhaust
Pressure is 0.3Mpa.
Heating furnace connection to water seal arrangement, is equipped with direct-operated regulator on pipeline, the pressure after determining valve is by pipeline
100Pa。
When crude oil is loaded onto ship, nitrogen is added in charge of oil ship, makes the oxygen-containing gas concentration of oil carrier Volatile Gas collected below 8%；
When crude oil is not loaded onto ship, Volatile Gas supplement or setting downstream pressure 100Pa, with nitrogen making machine group tonifying Qi；Nitrogen making machine
Nitrogen output is >=280Nm3/ h, nitrogen purity >=99% processed,
For the lasting reliability service for ensuring gas recovery system for oil, absorption type device for recovering oil and gas uses two adsorption tanks of A/B
The structure of composition, alternately absorption --- parsing --- cleaning process, A tank adsorbs the oil gas group in gaseous mixture under normal pressure
Point, after adsorption saturation, system cut automatically B tank carry out adsorption treatment, while A tank carry out vacuum analysis, obtain adsorbent
Regeneration parses initial stage, and adsorbent lower part is original gas (oxygen-containing tolerance is more), initially enters surge tank, then Vacuum solutions
Analysis recycling adsorbed gas, portion supplements nitrogen on the sorbent, and adsorbed gas oxygen content is seldom, and after nitrogen supplement, oxygen concentration declines again,
Consideration sets oxygen detection instrument in surge tank and continuously detects, automatic again when oxygen concentration is below 1.8% in surge tank gas
Valve opening exhaust, into big tank air extractor system, recycles this Volatile Gas.Therefore, the collection of this Volatile Gas is discontinuous, when gap
Between it is shorter.
Adsorbent meeting heat release during adsorbing oil gas, is equipped with temperature sensor, for monitoring activity on adsorption tanks
Charcoal adsorption tanks temperature, if any the situation that temperature is excessively high, system will be switched to another tank, while the tank introduces nitrogen and dropped
Temperature will start automatically shutdown procedure if necessary and alarm.Adsorbent need to select import brand Special adsorbent, it is ensured that adsorptivity
Can, can recovery section methane gas and discharge part carbon dioxide gas.
Absorption type device for recovering oil and gas uses skid-mounted type structure, and each system is fully integrated into sledge block, scene only need by
Gas gathering manifold and unit docking, give equipment distribution.Absorption type device for recovering oil and gas handles tolerance >=355Nm3/ h, non-methane total hydrocarbons
Removal efficiency reach 95% or more.
By being recycled to oil storage tank tank deck and harbour oil carrier Volatile Gas in the present invention, it is run through absorption type oil gas and returns
Receiving apparatus filters out air and inert gas, and Volatile Gas separates lime set in outlet pipe by separator, is pressurized into fuel gas compressor
To 0.2-0.3Mpa, then cool down by natural gas dryer to 10-40 DEG C, finally for heating furnace after oil expeller
Burning.
By taking the multi-purpose station project implementation of continent city as an example, continent city multi-purpose station reduces about 39.8~64 × 104Nm every year3Big tank volatilization
Gas discharge, loading dock reduce about 28.6~38.2 × 104Nm every year3The discharge of oil carrier Volatile Gas；Continent city multi-purpose station adsorbent equipment
Non-methane hydrocarbon emission amount is about 8~20g/m3, meet " storage tank farm atmosphere pollutants emission standards " (GB20950-2007) rule
Fixed: exhaust of oil mass concentration is less than or equal to 25g/m3Index request, practical exhaust of oil total amount is seldom, about 2.2~
5.5×104Nm3/ a is arranged " absorption type device for recovering oil and gas " to build 3.2%~5.4% before big tank air extractor, can
Concentration of the oxygen in natural gas is reduced, it is safe and reliable to operation.The nitrogen for reducing supplement enters air extractor system, wherein big tank
Nitrogen flow is 260Nm when tonifying Qi3/ h, duration about 8h, nitrogen flow is 40Nm after tonifying Qi3/ h, this two parts enter pot
Furnace combustion system, while reducing about 6~10Nm3/ h carbon dioxide gas enters boiler combustion system, reduces combustion heat loss about
1.2 ten thousand yuan/year are convenient for boiler combustion, and (nitrogen and carbon dioxide gas are nothing to the amount for reducing into natural gas compressor gas
With part), about 4.7 ten thousand yuan/year of power consumption of natural gas compressor motor is reduced, it is overall to reduce about 5.9 ten thousand yuan/year of running cost.
In conclusion harbour is equipped with nitrogen making machine group in the present invention, inerting oil carrier cargo tank and system pressure balance are, it can be achieved that section
Energy, emission reduction, the purpose to reduce environmental pollution are effectively saved needed for heating equipment fuel of using by oneself.
Claims (2)
1. nitrogen making machine group, suction outside a kind of multi-purpose station oil tank top gas and harbour gas recovery system for oil, including sequentially connected station
Attached formula device for recovering oil and gas, separator, stand in fuel gas compressor, drier, oil expeller, which is characterized in that storage tank tank field with
Outer nitrogen making machine group of standing is in parallel, and water seal arrangement in parallel is equipped between storage tank tank field and outer nitrogen making machine group of standing, and oil expeller, which is connected to, to be added
Hot stove,
Wherein, it stands outer nitrogen making machine group: by the nitrogen making machine tonifying Qi in Inert Tanks pipe-line system；When crude oil is loaded onto ship, in charge of oil ship
Middle addition nitrogen makes the oxygen-containing gas concentration of oil carrier Volatile Gas collected below 8%；When crude oil is not loaded onto ship, Volatile Gas supplement or
Downstream pressure 100Pa is set, with nitrogen making machine tonifying Qi；
Absorption type device for recovering oil and gas: mixed oil and gas enters adsorption system and is adsorbed, air and inert gas rear discharge up to standard；
Wherein, adsorption system includes the structure of two adsorption tanks of A/B composition, alternately absorption --- parsing --- cleaning process,
Under normal pressure A tank absorption gaseous mixture in oil-gas component, after adsorption saturation, system cut automatically B tank carry out adsorption treatment, simultaneously
A tank carries out vacuum analysis, regenerates adsorbent；Oil gas, which is adsorbed, to be left, and is compressed, is dried, cooling down, and big portion is isolated
Divide water and light oil, light oil.
2. a kind of multi-purpose station oil tank top gas according to claim 1 and harbour gas recovery system for oil, which is characterized in that
Oil storage tank in storage tank tank field is connected by breather valve with safety valve with atmosphere, setting breathing valve exhaust and superfeed pressure bound
Value is 2000Pa/-250Pa, and when pressure inside the tank is greater than breathing valve opening pressure, breather valve is opened, gas in blowdown vessel；Work as tank
Interior gas pressure automatically opens breather valve when being less than breathing valve inlet pressure setting value, and cover gas into tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810958410.5A CN109178697A (en) | 2018-08-22 | 2018-08-22 | A kind of multi-purpose station oil tank top gas and harbour gas recovery system for oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810958410.5A CN109178697A (en) | 2018-08-22 | 2018-08-22 | A kind of multi-purpose station oil tank top gas and harbour gas recovery system for oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109178697A true CN109178697A (en) | 2019-01-11 |
Family
ID=64918896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810958410.5A Pending CN109178697A (en) | 2018-08-22 | 2018-08-22 | A kind of multi-purpose station oil tank top gas and harbour gas recovery system for oil |
Country Status (1)
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| CN (1) | CN109178697A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110893955A (en) * | 2019-11-18 | 2020-03-20 | 西安长庆科技工程有限责任公司 | Skid-mounted large tank air extraction device and method |
| CN111846675A (en) * | 2020-08-12 | 2020-10-30 | 眉山麦克在线设备股份有限公司 | Oil gas volatilization inhibition system and method with inert gas protection function |
| CN111907953A (en) * | 2020-08-12 | 2020-11-10 | 眉山麦克在线设备股份有限公司 | Oil gas volatilization inhibition system and method |
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| CN104096379A (en) * | 2014-07-11 | 2014-10-15 | 海湾环境科技（北京）股份有限公司 | High-sulfur crude oil gas recovery system for docks |
| CN105771538A (en) * | 2016-04-28 | 2016-07-20 | 张家港市华昌新材料科技有限公司 | Storage tank breathing air recycling method |
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2018
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Patent Citations (3)
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| US20040045625A1 (en) * | 2002-09-09 | 2004-03-11 | Gray John M. | Tank pressure management system |
| CN104096379A (en) * | 2014-07-11 | 2014-10-15 | 海湾环境科技（北京）股份有限公司 | High-sulfur crude oil gas recovery system for docks |
| CN105771538A (en) * | 2016-04-28 | 2016-07-20 | 张家港市华昌新材料科技有限公司 | Storage tank breathing air recycling method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110893955A (en) * | 2019-11-18 | 2020-03-20 | 西安长庆科技工程有限责任公司 | Skid-mounted large tank air extraction device and method |
| CN111846675A (en) * | 2020-08-12 | 2020-10-30 | 眉山麦克在线设备股份有限公司 | Oil gas volatilization inhibition system and method with inert gas protection function |
| CN111907953A (en) * | 2020-08-12 | 2020-11-10 | 眉山麦克在线设备股份有限公司 | Oil gas volatilization inhibition system and method |
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