CN104096379B - A kind of harbour sour crude oil gas recovery processing system - Google Patents
A kind of harbour sour crude oil gas recovery processing system Download PDFInfo
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- CN104096379B CN104096379B CN201410329298.0A CN201410329298A CN104096379B CN 104096379 B CN104096379 B CN 104096379B CN 201410329298 A CN201410329298 A CN 201410329298A CN 104096379 B CN104096379 B CN 104096379B
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Abstract
The object that the present invention relates to a kind of harbour sour crude oil gas recovery processing system is the crude oil vapor in Liang Ge shipping dock berth remanufacture.Oil gas is collected by oil-gas pipeline special on the bank, and completes recovery by the charcoal absorption oil gas recovery unit that two-stage is special.The heavy hydrocarbon that first stage reclaims becomes liquid through overcompression and cooling.The light fraction of reclaiming in second stage is also concentrated as boiler oil.After gas recovery system for oil process; the oil product reclaimed can become fuel after being converted back to liquid state; heat energy is provided; the fuel consumption of reservoir area can be made significantly to decline and reduce operation cost, also can provide secure interface, ensure not produce potential safety hazard in shipment process; and can environment protection; reduce haze pollution sources, also can be the system that large-scale Wharf Base provides reliable and stable, it is that concentration is high, large-minded, the actual condition of pressure transient that solution harbour turnover oil product discharges instantaneously.
Description
Technical field
The present invention relates to organic gas recovery and utilization technology field, be specifically related to a kind of harbour sour crude oil gas recovery processing system.
Background technology
Volatile matter mainly hydrocarbon and the sulfide of crude oil, the main component of hydrocarbon is CH
4, C
2h
6, C
3h
8deng, be all inflammable gas, discharge can bring environmental pollution arbitrarily simultaneously; The main component of sulfide is H
2s and mercaptan.
The public utility environment of harbour is fewer, and other technology mode does not meet strict technical property requirements.Direct burning is the technique the most simply controlling exhaust of oil, particularly complicated for component and have the crude oil of a lot of Light ends oil gas.But organic components concentration is lower in crude oil terminal oil gas, in order to ensure safety and burn heat completely, under the condition supplied without natural gas, need supplementary propane fuel, fuel cost will be very high.Therefore, be necessary to design a kind of harbour sour crude oil gas recovery processing system.
Summary of the invention
The object of the invention is, for prior art Problems existing, there is provided a kind of after gas recovery system for oil process, the oil product reclaimed can become fuel after being converted back to liquid state, heat energy is provided, the fuel consumption of reservoir area can be made significantly to decline and reduce operation cost, also secure interface can be provided, ensure not produce potential safety hazard in shipment process, and can environment protection, reduce the pollution sources of haze pm2.5, also can be the system that large-scale Wharf Base provides reliable and stable, it is that concentration is high that solution harbour turnover oil product discharges instantaneously, large-minded, the harbour sour crude oil gas recovery processing system of the actual condition of pressure transient.
For achieving the above object, the technical solution used in the present invention is: provide a kind of harbour sour crude oil gas recovery processing system, it is characterized in that, described system comprises oil gas collection pipeline, oil gas collection pipeline is disposed with the coagulating liq collecting tank be connected in parallel on oil gas collection pipeline, be connected on the blower fan on oil gas collection pipeline, the oil gas that blower fan is discharged is connected with First Heat Exchanger by oil gas collection pipeline, the oil gas that First Heat Exchanger exports is connected with the second heat exchanger by desulfurizing tower again, the oil gas that second heat exchanger is discharged is connected with primary activity charcoal adsorption tanks with the first air intake valve by oil gas collection pipeline, first row air valve on primary activity charcoal adsorption tanks is connected with the air inlet of first group of vavuum pump by oil gas collection pipeline, the gas outlet of first group of vavuum pump is connected with the air inlet of the first oil gas absorbent storage tank by oil gas collection pipeline, the circulation fluid outlet of the first oil gas absorbent storage tank consists of pipeloop and the 3rd heat exchanger and first group of vavuum pump and circulates, the exhaust outlet of the first oil gas absorbent storage tank is connected with suction port of compressor by oil gas collection pipeline, the outlet of compressor is connected with the entrance of hydrocarbon separator with the 4th heat exchanger by oil gas collection pipeline, the outlet of hydrocarbon separator is connected with liquid hydrocarbon storage tank by oil gas collection pipeline, the first row gas port not absorbing gas is provided with at the top of primary activity charcoal adsorption tanks, first row gas port is connected to the second order activity charcoal adsorption tanks identical with primary activity charcoal adsorption tanks structure by the first tail gas air bleeding valve and oil gas collection pipeline and the second air intake valve, the top of second order activity charcoal adsorption tanks is provided with the second exhaust port not absorbing gas, second exhaust port by the second tail gas air bleeding valve and evacuated tube directly emptying, be arranged on the second row air valve of second order activity charcoal adsorption tanks lower end by oil gas collection pipeline, second group of vavuum pump, second oil gas absorbent storage tank is also connected with liquid hydrocarbon storage tank with separation liquid pump.
Wherein preferred technical scheme is, the front-end and back-end of coagulating liq collecting tank in parallel on described oil gas collection pipeline are in series with the first detonation seal and the second detonation seal respectively, oil gas collection pipeline between the outlet and the entrance of First Heat Exchanger of blower fan is in series with the 3rd detonation seal, oil gas collection pipeline between the outlet and the first air intake valve of the second heat exchanger is in series with the 4th detonation seal, the oil gas collection pipeline between the first tail gas air bleeding valve and the second air intake valve is in series with the 5th detonation seal.
Preferred technical scheme is further, described oil gas collection pipeline comprises setting oil gas collection pipeline aboard ship, be arranged on oil gas collection pipeline on the bank and be connected the oil gas collection pipeline arranged aboard ship and the flexible pipe being arranged on oil gas collection pipeline on the bank, be respectively equipped with temperature sensor and pressure sensor at flexible pipe with being arranged on the junction of oil gas collection pipeline on the bank and the first detonation seal, the second detonation seal, the 3rd detonation seal and the 4th detonation seal, temperature sensor is connected with Programmable Logic Controller respectively with pressure sensor.
Further preferred technical scheme also has, and described Programmable Logic Controller is connected with alarm, and Programmable Logic Controller is also connected with the valve on the oil gas collection pipeline arranged on ship and the oil gas collection pipeline being arranged on the bank.
Further preferred technical scheme also has, described in be arranged on oil gas collection pipeline on the bank and sloped down to by flexible pipe link and be parallel with coagulating liq collecting tank and be then inclined upwardly again.
Further preferred technical scheme also has, and has liquid-level switch at described coagulating liq collecting tank, is in series with the first control valve being parallel with the oil gas collection pipeline between coagulating liq collecting tank place and the second detonation seal.
Preferred technical scheme also has further, described first detonation seal has two, one end of two the first detonation seals is connected with the oil gas collection pipeline on two oil carriers respectively, and the other end of two the first detonation seals is connected in series by the first control valve and the second detonation seal; Two Fans are parallel with between the second detonation seal and the 3rd detonation seal; Between First Heat Exchanger and the second heat exchanger, be at least parallel with two cover desulfurizing towers, primary activity charcoal adsorption tanks and second order activity charcoal adsorption tanks are at least connected in parallel by two absorbent charcoal adsorption tanks and form; First group of vavuum pump and second group of vavuum pump are at least connected in parallel by three vavuum pumps respectively.
Further preferred technical scheme also has, described in the first air intake valve, the second air intake valve and first row air valve on the primary activity charcoal adsorption tanks that are arranged in parallel and second order activity charcoal adsorption tanks, second row air valve and the first tail gas air bleeding valve, the second tail gas air bleeding valve alternately open or close.
Preferred technical scheme also has, described hydrocarbon separator is provided with light gas floss hole, light gas floss hole connects and composes closed circuit by the entrance of light gas carrier pipe and light gas valve and compressor, and on closed circuit, be provided with light gas tap line, one end of light gas tap line is connected on the oil gas collection pipeline between the second heat exchanger and the 4th detonation seal, be provided with sewage discharge port in the lower end of hydrocarbon separator, sewage discharge port is connected with sewage discharge pump by effluent outfall.
Preferred technical scheme also has, and described first oil gas absorbent storage tank is provided with the first Balance Air exhaust port, and the first Balance Air exhaust port is connected with the entrance of first group of vavuum pump by the first Balance Air carrier pipe, second oil gas absorbent storage tank is provided with the 3rd exhaust outlet, 3rd exhaust outlet is by the 3rd tail gas air bleeding valve, 4th tail gas air bleeding valve and blast pipe directly lead to burning boiler, blast pipe between the 3rd tail gas air bleeding valve and the 4th tail gas air bleeding valve is parallel with the second Balance Air carrier pipe, second Balance Air carrier pipe is connected by the entrance of valve with second group of vavuum pump, blast pipe between the 3rd tail gas air bleeding valve and the 4th tail gas air bleeding valve is parallel with the second light gas carrier pipe and the second light gas valve, one end of second light gas carrier pipe is connected to the arrival end of the second air intake valve.
Compared with prior art, the invention has the beneficial effects as follows:
1), after gas recovery system for oil being installed on boats and ships or vehicle, there is larger energy-conservation and economic benefit;
2) discharging waste gas medium sulphide content content can meet Standard;
3) in discharging waste gas, gas concentration can meet Standard;
4) oil gas recovery rate can meet Standard;
5) requirement that oil gas should meet boiler safety burning is reclaimed.
Accompanying drawing explanation
Fig. 1 is harbour sour crude oil gas recovery processing system figure of the present invention.
In figure: 1-oil gas collection pipeline, 2-coagulating liq collecting tank, 3-blower fan, 4-First Heat Exchanger, 5-desulfurizing tower, 6-second heat exchanger, 7-first air intake valve, 8-primary activity charcoal adsorption tanks, 9-first row air valve, 10-first group of vavuum pump, 11-first oil gas absorbent storage tank, 12-pipeloop, 13-the 3rd heat exchanger, 14-compressor, 15-the 4th heat exchange, 16-hydrocarbon separator, 17-liquid hydrocarbon storage tank, 18-first tail gas air bleeding valve, 19-second air intake valve, 20-second order activity charcoal adsorption tanks, 21-second tail gas air bleeding valve, 22-evacuated tube, 23-second row air valve, 24-second group of vavuum pump, 25-second oil gas absorbent storage tank, 26-is separated liquid pump, 27-first detonation seal, 28-second detonation seal, 29-the 3rd detonation seal, 30-the 4th detonation seal, 31-the 5th detonation seal, 32-flexible pipe, 33-liquid-level switch, 34-first control valve, 35-light gas carrier pipe, 36-light gas valve, 37-light gas tap line, 38-sewage discharge pump, 39-first Balance Air carrier pipe, 40-the 3rd tail gas air bleeding valve, 41-the 4th tail gas air bleeding valve, 42-second Balance Air carrier pipe, 43-second light gas carrier pipe, 44-second light gas valve.
Detailed description of the invention
As shown in Figure 1, the present invention is a kind of harbour sour crude oil gas recovery processing system, this system comprises oil gas collection pipeline 1, oil gas collection pipeline 1 is disposed with the coagulating liq collecting tank 2 be connected in parallel on oil gas collection pipeline 1, be connected on the blower fan 3 on oil gas collection pipeline 1, the oil gas that blower fan 3 is discharged is connected with First Heat Exchanger 4 by oil gas collection pipeline 1, the oil gas that First Heat Exchanger 4 exports is connected with the second heat exchanger 6 by desulfurizing tower 5 again, the oil gas that second heat exchanger 6 is discharged is connected with primary activity charcoal adsorption tanks 8 with the first air intake valve 7 by oil gas collection pipeline 1, first row air valve 9 on primary activity charcoal adsorption tanks 8 is connected with the air inlet of first group of vavuum pump 10 by oil gas collection pipeline 1, the gas outlet of first group of vavuum pump 10 is connected with the air inlet of the first oil gas absorbent storage tank 11 by oil gas collection pipeline 1, the circulation fluid outlet of the first oil gas absorbent storage tank 11 consists of pipeloop 12 and the 3rd heat exchanger 13 and first group of vavuum pump 10 and circulates, the exhaust outlet of the first oil gas absorbent storage tank 11 is connected with compressor 14 entrance by oil gas collection pipeline 1, the outlet of compressor 14 is connected with the entrance of hydrocarbon separator 16 with the 4th heat exchanger 15 by oil gas collection pipeline 1, the outlet of hydrocarbon separator 16 is connected with liquid hydrocarbon storage tank 17 by oil gas collection pipeline 1, the first row gas port not absorbing gas is provided with at the top of primary activity charcoal adsorption tanks 8, first row gas port is connected to the second order activity charcoal adsorption tanks 20 identical with primary activity charcoal adsorption tanks structure by the first tail gas air bleeding valve 18 and oil gas collection pipeline 1 and the second air intake valve 19, the top of second order activity charcoal adsorption tanks 20 is provided with the second exhaust port not absorbing gas, second exhaust port by the second tail gas air bleeding valve 21 and evacuated tube 22 directly emptying, be arranged on the second row air valve 23 of second order activity charcoal adsorption tanks 20 lower end by oil gas collection pipeline 1, second group of vavuum pump 24, second oil gas absorbent storage tank 25 is also connected with liquid hydrocarbon storage tank 17 with separation liquid pump 26.
Preferred embodiment is in the present invention, the front-end and back-end of coagulating liq collecting tank 2 in parallel on described oil gas collection pipeline 1 are in series with the first detonation seal 27 and the second detonation seal 28 respectively, at wind, oil gas collection pipeline 1 between the outlet of 3 and the entrance of First Heat Exchanger 4 is in series with the 3rd detonation seal 29, oil gas collection pipeline 1 between the outlet and the first air intake valve 7 of the second heat exchanger 6 is in series with the 4th detonation seal 30, the oil gas collection pipeline 1 between the first tail gas air bleeding valve 18 and the second air intake valve 19 is in series with the 5th detonation seal 31.
Further preferred embodiment is in the present invention, described oil gas collection pipeline 1 comprises setting oil gas collection pipeline aboard ship, be arranged on oil gas collection pipeline on the bank and be connected the oil gas collection pipeline arranged aboard ship and the flexible pipe 32 being arranged on oil gas collection pipeline on the bank, at flexible pipe 32 and the junction and the first detonation seal 27 that are arranged on oil gas collection pipeline on the bank, second detonation seal 28, 3rd detonation seal 29 and the 4th detonation seal 30 are respectively equipped with temperature sensor and pressure sensor, temperature sensor is connected with Programmable Logic Controller respectively with pressure sensor.
Further preferred embodiment also has in the present invention, and described Programmable Logic Controller is connected with alarm, and Programmable Logic Controller is also connected with the valve on the oil gas collection pipeline arranged on ship and the oil gas collection pipeline being arranged on the bank.
Further preferred embodiment also has in the present invention, described in be arranged on oil gas collection pipeline 1 on the bank and sloped down to by flexible pipe link and be parallel with coagulating liq collecting tank 2 and be then inclined upwardly again.
Further preferred embodiment also has in the present invention, has liquid-level switch 33 at described coagulating liq collecting tank 2, is in series with the first control valve 34 being parallel with the oil gas collection pipeline between coagulating liq collecting tank 2 place and the second detonation seal 28.
Further preferred embodiment also has in the present invention, described first detonation seal 27 has two, one end of two the first detonation seals 27 is connected with the oil gas collection pipeline 1 on two oil carriers respectively, and the other end of two the first detonation seals 27 is connected in series by the first control valve 34 and the second detonation seal 28; Two Fans 3 are parallel with between the second detonation seal 28 and the 3rd detonation seal 29; Between First Heat Exchanger 4 and the second heat exchanger 6, be at least parallel with two cover desulfurizing towers 5, primary activity charcoal adsorption tanks 8 and second order activity charcoal adsorption tanks 20 are at least connected in parallel by two absorbent charcoal adsorption tanks and form; First group of vavuum pump 10 and second group of vavuum pump 24 are at least connected in parallel by three vavuum pumps respectively.
Further preferred embodiment also has in the present invention, described in the primary activity charcoal adsorption tanks 8 that are arranged in parallel alternately open with the first air intake valve 7, second air intake valve 19 on second order activity charcoal adsorption tanks 20 with first row air valve 9, second row air valve 23 and the first tail gas air bleeding valve 18, second tail gas air bleeding valve 21 or close.
Preferred embodiment also has in the present invention, described hydrocarbon separator 16 is provided with light gas floss hole, light gas floss hole connects and composes closed circuit by light gas carrier pipe 35 and light gas valve 36 with the entrance of compressor 14, and on closed circuit, be provided with light gas tap line 37, one end of light gas tap line 37 is connected on the oil gas collection pipeline 1 between the second heat exchanger 6 and the 4th detonation seal 30, sewage discharge port is provided with in the lower end of hydrocarbon separator 16, sewage discharge port is connected with sewage discharge pump 38 by effluent outfall.
Preferred embodiment also has in the present invention, and described first oil gas absorbent storage tank 11 is provided with the first Balance Air exhaust port, and the first Balance Air exhaust port is connected with the entrance of first group of vavuum pump 10 by the first Balance Air carrier pipe 39, second oil gas absorbent storage tank 25 is provided with the 3rd exhaust outlet, 3rd exhaust outlet is by the 3rd tail gas air bleeding valve 40, 4th tail gas air bleeding valve 41 and blast pipe directly lead to burning boiler, blast pipe between the 3rd tail gas air bleeding valve 40 and the 4th tail gas air bleeding valve 41 is parallel with the second Balance Air carrier pipe 42, second Balance Air carrier pipe 42 is connected by the entrance of valve with second group of vavuum pump 24, blast pipe between the 3rd tail gas air bleeding valve 40 and the 4th tail gas air bleeding valve 41 is parallel with the second light gas carrier pipe 43 and the second light gas valve 44, one end of second light gas carrier pipe 43 is connected to the arrival end of the second air intake valve 19.
Embodiment 1
As shown in Figure 1, the object of this harbour sour crude oil gas recovery processing system is the crude oil vapor in Liang Ge shipping dock berth remanufacture.Oil gas is collected by oil-gas pipeline special on the bank, and completes recovery by the charcoal absorption oil gas recovery unit that two-stage is special.The heavy hydrocarbon that first stage reclaims becomes liquid through overcompression and cooling.The light fraction of reclaiming in second stage is also concentrated as boiler oil.
The hydrocarbon that first group of level vavuum pump produces is delivered to compressor, then enters cooler, to convert thereof into liquid form storage, described liquid can use as boiler oil at any time.The oil gas of second group of vavuum pump desorb can be directly used in boiler combustion.The conversion time being adsorbed onto regeneration cycle is 15 minutes.
A whole set of gas recovery system for oil comprises: two cover bank ship secure interface systems, hydrocarbon transfer system, a set of desulphurization system, and two-stage charcoal adsorbs gas recovery system for oil and is equipped with special detonation seal and Row control conversion valve.
A whole set of harbour device for recovering oil and gas adopts PLC (programmable logic controller) to control, and is positioned on the bank near power distribution station.PLC receive all boats and ships (if any) and on the bank instrument signal be used for system cloud gray model and control and safety guarantee.Any alarm or shutdown all can show at fault origination point on the spot, and are showing fault origination point on the spot with on remote human-machine interface.
Gas recovery system for oil process is from the mixed oil and gas of each harbour, and maximum crude oil shipment load is 4000m
3/ h, the oil gas flow amounted in petroleum vapor recovery pipeline is 5000m
3/ h.Oil gas extracts air-blower control harbour oil gas collection pressure to protect safety of ship, oil gas is detached boats and ships, promotes oil gas by desulphurization system, oil gas cooling system, and two-stage gas recovery system for oil.Heavier hydrocarbon steam is with storage in liquid, and lighter hydrocarbon is transported directly to the recovery of boiler as fuel gas.
Flow process is described in detail:
The crude oil vapor that gas recovery system for oil produces when collecting crude oil shipment, be transported to petroleum vapor recovery unit, part oil gas condenses into product liquid.Remaining Oil And Gas is condensed into high heating value component and is directly used as boiler oil.The final emission gases concentration of oil vapor treatment system keeps below the level of 10mg/L.System components arranges detection and control parts, also arranges security setting reply risky operation.
System describes:
The first step of oil gas control system collects crude oil to load the oil gas of generation onto ship when liquid crude (or other hydrocarbon) loads cabin, and crude oil vapor/air/inert gas is extruded from liquid cabin, and is collected by the oil universal air pipe of boats and ships.Owing to having certain pressure in cabin when crude oil is loaded onto ship and oil gas pipeline, this pressure promotes oil gas by pipeline, the cabin of boats and ships, enters recovery system.
Oil gas flexible pipe road is connected with the oil gas collector of boats and ships, collects oil gas and carry to cast off wharf on the bank.This part in the security system of drawing bank ship interface, the function of this part for the protection of boats and ships, the infringement caused with the high pressure avoiding downstream oil and gas pipes to produce, negative pressure and tempering.
The pipeline pressure of pressure sensor measurement mechanism junction.These sensors provide oil-air pressure signal in pipeline to PLC.PLC sets high pressure and low pressure alarming, and Gao Gao and low low-pressure are shut down with answering pressure change operating mode.
Be full of the cabin of inert gas, when the pressure at " connection of device oil gas " (the oil gas tie point between boats and ships and harbour) place exceedes 80% of boats and ships maximum allowble pressure, can sound and light alarm be caused.When reaching 100% of boats and ships maximum allowble pressure, crude oil ship-loading system is shut down.If the oil and gas pipes pressure of device oil gas junction is low to moderate 0.2psig (6 " water column), low pressure alarming starts.If when pressure is low to moderate-0.5psig (-14 " water column), crude oil shipment is shut down, (need adjust according to specific ship).
In order to the measure of the Secure isolation between gas recovery system for oil and boats and ships can be provided, a detonation seal is set, is arranged on the oil and gas pipes of harbour, be positioned at " bank ship interface security system ".When there is tempering, the temperature sensor on assembly detects and inputs detonation seal temperature and pressure (design temperature 200 degrees Fahrenheit) to PLC.Once generation tempering, crude oil ship-loading system and oil-gas recovery system dead halt at once.(after tempering display/shutdown, must detect detonation seal).
The oil gas collected from harbour is sent to one 12 " or 16 " vapor line and flows to bank.12 "/16 " vapor line is downward-sloping, and to dock safety coil pipe, place touches the bottom, and is then inclined upwardly.This (with all) low spot is for collecting the liquid of condensation.The low spot of 12 "/16 " vapor line is installed liquid trap and is arranged condensate drain point.
Liquid is collected in harbour 12 "/16 " liquid trap, liquid level rising exciting liquid bit switch, the manual discharge opeing of alert.Coagulating liq in 12 "/16 " liquid trap is drained or manual emission by custom-designed drainage system.
The air-fuel mixture come from harbour enters 16, and " oil and gas pipes, after midway is converged, entering 18, " oil and gas pipes enters hydrocarbon transfer system.Because the oil gas of fans entrance is potential burning things which may cause a fire disaster, fans entrance must install detonation seal to ensure safety.
Oil gas is Cemented filling on the coast, first by air entry detonation seal, then enters blower fan.In order to extra safety.Temperature sensor, to PLC input signal, shows the generation of tempering.Occur that tempering must close whole system.(after there is tempering or tie-in outage, detonation seal must be detected.)
For extra security consideration, be arranged on, in blower fan 3 exit of steam pipe line, extra detonation seal be installed.Temperature monitor sends signal to the PLC that there occurs flash back.System is turned off in any flash back.(detonation seal must check after any flash back is shut down).
Oil gas transports by using blower fan (2) system.Each blower fan is by a Frequency-variable Modulation speed, runs in suitable level to keep the pressure of each harbour.Blower fan can make oil gas temperature raise to the conveying of oil gas, and the oil gas leaving blower fan system must cool before entering desulphurization system charcoal bed.Oil gas temperature is lower, and hydrocarbon adsorbance is larger, and oil gas is cooled by plate type heat exchanger, and refrigerant is 10 degrees Celsius of chilled waters.
Crude oil vapor contains sulfide, must go out before entering recovery system.If can not remove desulfuration, sulphur will concentrate in boiler oil, and boiler chimney is by the unacceptable poisonous sulfur dioxide of discharge.Sulphur removes in the active carbon desulfurization system of one of blower fan downstream special non-at-scene regeneration, and in desulphurization system, desulfurizing agent must be changed after losing efficacy.For ensureing that oil gas has suitable temperature before entering hydrocarbons adsorbent charcoal bed after desulphurization system, cooled equally by the oil gas after desulphurization system.Oil gas is cooled by plate type heat exchanger, and refrigerant is 10 degrees Celsius of chilled waters.
After oil gas leaves desulfurization and cooling system, enter the blower fan suction inlet of first order charcoal recovery system, a detonation seal is set herein and causes system damage to avoid any tempering.
Oil gas is entering between first order gas recovery system for oil, through this detonation seal, as shown in the figure.This detonation seal is arranged on oil and gas pipes close to petroleum vapor recovery (VRU) place.Signal is inputted PLC by temperature sensor, can show the generation of tempering, and tempering occurs must close whole system at once completely.
Oil gas enters a charcoal bed of first order adsorption system, and the selection of adsorbent bed adopts the switch of inlet valve and outlet valve to determine by PLC.The charcoal bed of vacuum regeneration needs to close inlet valve and outlet valve and opens vacuum valve.
The outlet of primary activity charcoal bed arranges and monitors temperature sensors and detonation seal.Under vacuum conditions active-carbon bed, the desorption effect improving active carbon opened by blow down valve.After regeneration completes, charcoal bed comes back to about one minute normal pressure time by slowly opening back pressure.
When charcoal bed tempertaure is higher than 200 ℉, system can automatic shutdown.The temperature of vacuum pump inlet is monitored by instrument, to determine that whether active-carbon bed temperature is too high.In vacuum regeneration process, vacuum can by pressure monitor sensor, to ensure desorption effect.
Vavuum pump (one for subsequent use as twin-stage) carries out recycling utilization to first order charcoal canister, vavuum pump takes away heat by ethylene glycol, ethylene glycol is recovered to a knockout drum, circulate with vavuum pump, vavuum pump is sent back to, this system composition closed circuit after being cooled by cooler.
The oil gas of vavuum pump solution sucking-off directly enters oil gas compressor, is compressed to about 120psig.The oil gas that compressor is discharged is lowered the temperature by condenser, and liquid cooling coalescence is collected in condensation separator.These condensed fluids must pressurized storage in pressure vessel (liquid hydrocarbon holding vessel) to keep liquid.These condensed fluids stored as the postcombustion of boiler-burner, to meet the demand of any postcombustion.
The circulation timei of the absorption of charcoal bed and regeneration is 15 minutes.No matter the load of hydro carbons on charcoal bed, charcoal bed all switches in the circulation of this time.The action of PLC controlled circulation valve, ensures the steady switching between each circulation, and when at utmost reducing to switch, back-pressure is on the impact of boats and ships.
Major part heavy constituent hydrocarbon is separated in first order VRU, and pressurized storage is in basin.But the light component hydro carbons (mainly ethane and propane) still containing suitable content in first order VRU Exhaust Gas, need to carry out concentrating and separating as fuel, this part oil gas enters second level VRU.Second level VRU is designed to be separated light component hydrocarbon, and is condensed into the high concentration hydrocarbon gas, and the VOC discharging non-hydrocarbons leaves second level charcoal tank.The similar first order VRU of the second level VRU method of operation.Hydro carbons is in charcoal absorption, and non-hydrocarbon gas does not adsorb and flows out charcoal bed.Use high vacuum desorption and regeneration charcoal bed, and produce high-concentration oil vapor.Also containing a small amount of oxygen or nitrogen in the high-concentration oil vapor of vacuum regeneration.This part rich hydrocarbon gas directly can be used as the fuel of tank field boiler, does not need further process.But ensure that gas concentration is greater than 45% oxygen content and is less than 6.5% and is just sent to boiler as fuel.
For safety and cooling, the present invention adopts liquid-ring vacuum pump to provide vacuum regeneration energy.
The invention is not restricted to above-mentioned embodiment, those skilled in the art make to any apparent improvement of above-mentioned embodiment or change, all can not exceed the protection domain of design of the present invention and claims.
Claims (10)
1. a harbour sour crude oil gas recovery processing system, it is characterized in that, described system comprises oil gas collection pipeline, oil gas collection pipeline is disposed with the coagulating liq collecting tank be connected in parallel on oil gas collection pipeline, be connected on the blower fan on oil gas collection pipeline, the oil gas that blower fan is discharged is connected with First Heat Exchanger by oil gas collection pipeline, the oil gas that First Heat Exchanger exports is connected with the second heat exchanger by desulfurizing tower again, the oil gas that second heat exchanger is discharged is connected with primary activity charcoal adsorption tanks with the first air intake valve by oil gas collection pipeline, first row air valve on primary activity charcoal adsorption tanks is connected with the air inlet of first group of vavuum pump by oil gas collection pipeline, the gas outlet of first group of vavuum pump is connected with the air inlet of the first oil gas absorbent storage tank by oil gas collection pipeline, the circulation fluid outlet of the first oil gas absorbent storage tank consists of pipeloop and the 3rd heat exchanger and first group of vavuum pump and circulates, the exhaust outlet of the first oil gas absorbent storage tank is connected with suction port of compressor by oil gas collection pipeline, the outlet of compressor is connected with the entrance of hydrocarbon separator with the 4th heat exchanger by oil gas collection pipeline, the outlet of hydrocarbon separator is connected with liquid hydrocarbon storage tank by oil gas collection pipeline, the first row gas port not absorbing gas is provided with at the top of primary activity charcoal adsorption tanks, first row gas port is connected to the second order activity charcoal adsorption tanks identical with primary activity charcoal adsorption tanks structure by the first tail gas air bleeding valve and oil gas collection pipeline and the second air intake valve, the top of second order activity charcoal adsorption tanks is provided with the second exhaust port not absorbing gas, second exhaust port by the second tail gas air bleeding valve and evacuated tube directly emptying, be arranged on the second row air valve of second order activity charcoal adsorption tanks lower end by oil gas collection pipeline, second group of vavuum pump, second oil gas absorbent storage tank is also connected with liquid hydrocarbon storage tank with separation liquid pump.
2. harbour sour crude oil gas recovery processing system as claimed in claim 1, it is characterized in that, the front-end and back-end of coagulating liq collecting tank in parallel on described oil gas collection pipeline are in series with the first detonation seal and the second detonation seal respectively, oil gas collection pipeline between the outlet and the entrance of First Heat Exchanger of blower fan is in series with the 3rd detonation seal, oil gas collection pipeline between the outlet and the first air intake valve of the second heat exchanger is in series with the 4th detonation seal, oil gas collection pipeline between the first tail gas air bleeding valve and the second air intake valve is in series with the 5th detonation seal.
3. harbour sour crude oil gas recovery processing system as claimed in claim 2, it is characterized in that, described oil gas collection pipeline comprises setting oil gas collection pipeline aboard ship, be arranged on oil gas collection pipeline on the bank and be connected the oil gas collection pipeline arranged aboard ship and the flexible pipe being arranged on oil gas collection pipeline on the bank, at flexible pipe and the junction and the first detonation seal that are arranged on oil gas collection pipeline on the bank, second detonation seal, 3rd detonation seal and the 4th detonation seal are respectively equipped with temperature sensor and pressure sensor, temperature sensor is connected with Programmable Logic Controller respectively with pressure sensor.
4. harbour sour crude oil gas recovery processing system as claimed in claim 3, it is characterized in that, described Programmable Logic Controller is connected with alarm, and Programmable Logic Controller is also connected with the valve on the oil gas collection pipeline arranged on ship and the oil gas collection pipeline being arranged on the bank.
5. harbour sour crude oil gas recovery processing system as claimed in claim 4, is characterized in that, described in be arranged on oil gas collection pipeline on the bank and sloped down to by flexible pipe link and be parallel with coagulating liq collecting tank and be then inclined upwardly again.
6. harbour sour crude oil gas recovery processing system as claimed in claim 5, it is characterized in that, have liquid-level switch at described coagulating liq collecting tank, be in series with the first control valve being parallel with the oil gas collection pipeline between coagulating liq collecting tank place and the second detonation seal.
7. harbour sour crude oil gas recovery processing system as claimed in claim 6, it is characterized in that, described first detonation seal has two, one end of two the first detonation seals is connected with the oil gas collection pipeline on two oil carriers respectively, and the other end of two the first detonation seals is connected in series by the first control valve and the second detonation seal; Two Fans are parallel with between the second detonation seal and the 3rd detonation seal; Between First Heat Exchanger and the second heat exchanger, be at least parallel with two cover desulfurizing towers, primary activity charcoal adsorption tanks and second order activity charcoal adsorption tanks are at least connected in parallel by two absorbent charcoal adsorption tanks and form; First group of vavuum pump and second group of vavuum pump are at least connected in parallel by three vavuum pumps respectively.
8. harbour sour crude oil gas recovery processing system as claimed in claim 7, it is characterized in that, described in the first air intake valve, the second air intake valve and first row air valve on the primary activity charcoal adsorption tanks that are arranged in parallel and second order activity charcoal adsorption tanks, second row air valve and the first tail gas air bleeding valve, the second tail gas air bleeding valve alternately open or close.
9. harbour sour crude oil gas recovery processing system as claimed in claim 1, it is characterized in that, described hydrocarbon separator is provided with light gas floss hole, light gas floss hole connects and composes closed circuit by the entrance of light gas carrier pipe and light gas valve and compressor, and on closed circuit, be provided with light gas tap line, one end of light gas tap line is connected on the oil gas collection pipeline between the second heat exchanger and the 4th detonation seal, sewage discharge port is provided with in the lower end of hydrocarbon separator, sewage discharge port is connected with sewage discharge pump by effluent outfall.
10. harbour sour crude oil gas recovery processing system as claimed in claim 1, it is characterized in that, described first oil gas absorbent storage tank is provided with the first Balance Air exhaust port, and the first Balance Air exhaust port is connected with the entrance of first group of vavuum pump by the first Balance Air carrier pipe, second oil gas absorbent storage tank is provided with the 3rd exhaust outlet, 3rd exhaust outlet is by the 3rd tail gas air bleeding valve, 4th tail gas air bleeding valve and blast pipe directly lead to burning boiler, blast pipe between the 3rd tail gas air bleeding valve and the 4th tail gas air bleeding valve is parallel with the second Balance Air carrier pipe, second Balance Air carrier pipe is connected by the entrance of valve with second group of vavuum pump, blast pipe between the 3rd tail gas air bleeding valve and the 4th tail gas air bleeding valve is parallel with the second light gas carrier pipe and the second light gas valve, one end of second light gas carrier pipe is connected to the arrival end of the second air intake valve.
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| CN104830365B (en) * | 2015-03-27 | 2017-02-01 | 上海森鑫新能源科技有限公司 | High sulfur crude oil oil-gas recovery technology and oil-gas recovery system |
| CN106512645B (en) * | 2016-12-30 | 2023-06-09 | 苏州苏净保护气氛有限公司 | Oil gas recovery system and oil gas recovery method |
| CN107725018B (en) * | 2017-09-20 | 2019-10-11 | 中国石油天然气股份有限公司 | Processing system for fireflood tail gas |
| CN107837642A (en) * | 2017-11-20 | 2018-03-27 | 浙江赛鹭鑫仪器有限公司 | A kind of petroleum vapor recovery and exhaust treatment system |
| CN109178697A (en) * | 2018-08-22 | 2019-01-11 | 中国石油化工股份有限公司华东油气分公司泰州采油厂 | A kind of multi-purpose station oil tank top gas and harbour gas recovery system for oil |
| CN108998070A (en) * | 2018-08-29 | 2018-12-14 | 镇海石化工程股份有限公司 | Crude oil loads oil-gas recovery method and recovery system onto ship |
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