CN205065273U - Scattered gas of multi -functional natural gas intelligence recovery unit - Google Patents
Scattered gas of multi -functional natural gas intelligence recovery unit Download PDFInfo
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- CN205065273U CN205065273U CN201520659768.XU CN201520659768U CN205065273U CN 205065273 U CN205065273 U CN 205065273U CN 201520659768 U CN201520659768 U CN 201520659768U CN 205065273 U CN205065273 U CN 205065273U
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Abstract
The utility model discloses a scattered gas of multi -functional natural gas intelligence recovery unit. The device includes detecting system, recovery system, driving system and temperature control system, all equipment sled dressizationes of the device are diffused gas, scattered gas field gas, when gas is diffused in the oil field, are utilized the reservation valve on the former exhaust stack line of retrieving on the car of generic interface butt joint at the recovery pipe network on retrieving the car, carry out the recovery of the natural gas. Retrieve the automatic switch -over of flow under recovering process utilization measuring and the different makings component conditions of autonomous system realization. The utility model discloses a natural gas of device and the multiple scattered air supply of process ability effective recycling has fully reduced the influence that the natural gas diffused the produced green house effect of gas, and effectual energy saving possesses good economic benefits. Process flow safety is simple, automatic control degree height, easy operation, open and stop promptly, can remove in a flexible way in the local natural gas recovery point of difference promptly, has comparatively wide application prospect and development potentiality.
Description
Technical field
The utility model belongs to the scattered gas of rock gas and reclaims field, is specifically related to a kind of multifunctional natural gas scattered gas intelligence recovering device.
Background technique
Rock gas, as the clean energy resource in fossil fuel, plays more and more important role in the adjustment process of the energy resource structure of China, and China's gas has entered the period of growing continuously and fast.China's natural gas rich reserves, the exploitation of domestic large-scale source of the gas and utilize technology quite ripe, but a large amount of scattered sources of the gas, as small-sized gas well, biomass pool etc. lack available exploitation and recovery technology.In addition, along with greatly developing of urban duct rock gas, in the process of gas ductwork construction, operation and maintenance, the problem of the natural gas diffusion produced is also quite concerned, especially the natural gas diffusion problem of gas ductwork in repairing, maintenance process.At present, the mode that conventional pipeline network of fuel gas in city maintenance and repairing operation of speedily carrying out rescue work substantially all adopt rock gas directly to diffuse, not only causes energy waste and environmental pollution, and there is great potential safety hazard, the security incidents such as pole fire hazardous, blast.
Mouth or pressure regulation Men Zhanzhong is touched at high-pressure natural gas long distance pipeline, underground gas pipeline, pipeline, need repeatedly to stop the supple of gas or steam maintenance to burning line according to plan every year, inevitably a large amount of rock gases residual in pipeline, valve and filter are directly diffused, each natural gas diffusion amount can reach more than mark sides up to a hundred gas, even in some emergent repairing situations, about thousands of mark sides gas can be reached.At present, all parts of the country are dispersed with numerous gas ductworks, and the number of times that need overhaul repairing every year can reach more than up to ten thousand times, even can reach more than tens0000 times, well imagine the huge of the economic loss scale of gas distributing system maintenance repairing.
In sum, develop a kind of natural gas recycling device, scattered source of the gas is recycled, effectively can reduce CO
2discharge, reduce greenhouse effect, protection of the environment, can also reduce rock gas station run danger, produce good economic benefit, reduce the loss.
Chinese patent application CN101509605A discloses the recovering device diffusing combustion gas in a kind of gas ductwork upkeep operation process.The combustion gas in Awaiting Overhaul pipe network region is pressurized to the operating pressure of the contiguous pipe network run by this model utility by a pressurization device, then directly squeeze in this pipe network.This technique has reclaimed the rock gas originally directly diffused, save natural gas resource, but this technique need run the different pressure of pipe network for contiguous when reclaiming dispersing gas, compressor back pressure is adjusted, add burden and the loss of equipment, operating cost and investment cost is caused greatly to improve, less economical.In addition, for the recovery of the rock gas of a certain pipeline section, the gas belonging to constant volume vacuumizes, and Compressor Inlet Pressure can reduce gradually, adds the change of said outlet pressure, and operation easier is increased greatly.
Chinese patent application CN104235604A discloses a kind of device utilizing ANG technology to reclaim pipe network dispersing gas.The all devices skid of this invention is on ANG recovery vehicle, utilize the diffusion valve on the universal coupling docking Awaiting Overhaul pipeline section on ANG recovery vehicle, carry out the recovery of dispersing gas, this technique reclaimed pipe network maintenance process neutralize other predictable diffuse situation under directly emptying rock gas, reduce the impact of the greenhouse effect that natural gas diffusion gas produces.But this technique only reclaims for pipe network dispersing gas, for other scattered sources of the gas, cannot adapt to the change of makings composition, application area is limited to, and it is lower to eliminate efficiency to the thermal effect of adsorptive process.
Model utility content
The purpose of this utility model is for the low situation of above-mentioned scattered gas utilization ratio, and the deficiency of scattered gas recovery technology, provides the scattered gas intelligence recovering device of a kind of multifunctional natural gas and method, effectively reclaims the rock gas of scattered source of the gas.
The utility model utilizes a set of multi-functional rock gas scattered gas intelligence recovering device to reclaim retail natural gas, its principle is: by all devices skid of this device on recovery vehicle, when reclaiming pipe network dispersing gas, scattered reservoir gas, oil field dispersing gas, utilize the universal coupling on recovery vehicle to dock the former reserved valve diffused on pipeline, carry out the recovery of rock gas.Pressure recovery scheme and absorption recovery scheme is provided with in recovery process, utilize and to detect and robot control system(RCS) realizes the automatic switchover of recovery process under different makings composition condition, technological process is safe and simple, automatic control level is high, simple to operate, namely open that namely stop also can movement flexibly.
The technological scheme that the utility model realizes above-mentioned purpose is:
A kind of multifunctional natural gas scattered gas intelligence recovering device, comprises detection system, reclaiming system, power system and temperature control system;
Described detection system comprises universal coupling, total valve and chromatogram detector; Described reclaiming system comprises pressure recovery system and adsorption recovery system, and described reclaiming system comprises compressor, pressurized reservoir, pre-adsorption tanks, absorption storage tank and valve; Described valve comprises pressure regulator valve, the first electric control valve, the second electric control valve, the 3rd electric control valve, the 4th electric control valve, the 5th electric control valve, the 6th electric control valve, the 7th electric control valve, the first stop valve and the second stop valve; Described temperature control system comprises heat exchanger, pump, decompressor, coolant storage tank, plate type heat exchanger and the 3rd stop valve, the 4th stop valve and the 5th stop valve; Described power system comprise LNG fuel tank, plate type heat exchanger, heater, motor, the 9th electric control valve and, the ANG helping air supply branch road be made up of the second pressure regulator valve and the 8th electric control valve;
Described universal coupling one end is connected air inlet with the reserved valve of the scattered gas of rock gas to be recycled, and the other end is connected with total valve, and described total valve rear end bypass is connected with chromatographic detector;
Described total valve rear end is divided into two tunnels, and the 4th electric control valve forms a road, is supply branch road; Another road is for reclaiming branch road, and described recovery branch road comprises a road and b road: pressure regulator valve and the first electric control valve are composed in series a road; Compressor and the second electric control valve are composed in series b road, electric control valve of connecting after a road and the parallel connection of b road; Air feed branch road is connected with recovery branch circuit parallel connection, connects the first stop valve, pre-adsorption tanks and the second stop valve after parallel connection successively; Described second stop valve rear end is divided into c road, d road and e road, c road connects the 6th electric control valve and pressurized reservoir successively, d road connects the 7th electric control valve and absorption storage tank, and e road connects the second pressure regulator valve and the 8th electric control valve in turn and is connected to described power system; Wherein, described absorption tank inside is provided with heat exchanger and phase-change material storage unit, and described heat exchanger connects outside temperature control system, and phase-change material storage unit is evenly distributed on tank inside;
Described delivery side of pump is connected with the 3rd stop valve, 3rd stop valve is connected with the import of heat exchanger, heat exchanger exit is connected with expander inlet, expander outlet is connected with the 5th stop valve, 5th stop valve is connected with the hot logistics import of plate type heat exchanger, and the hot stream outlet of plate type heat exchanger is connected with the 4th stop valve, and the 4th stop valve is connected with coolant storage tank import, described coolant storage tank is connected with pump, forms loop; Wherein, the cold logistics interface of plate type heat exchanger connects power system;
The outlet of described LNG fuel tank is connected with the 9th electric control valve, and the 9th electric control valve is connected with the cold logistics import of plate type heat exchanger, forms f road; In described reclaiming system, pressure regulator valve and electric control valve connect and compose g road, and described f road is in parallel with g road, connect heater inlet, the import of the outlet connecting engine of heater, and the outlet of motor connects outlet pipe; The connecting shaft drive electrical generators generating of motor.
In said apparatus, described reclaiming system is also provided with flowmeter, and described flowmeter is positioned on the branch road at the second stop valve place, i.e. the rear end of the second stop valve, for being stored in the metering of the rock gas volume in two storage tanks.
In said apparatus, the sorbent of filling in described pre-adsorption tanks comprise in molecular sieve, active carbon or silica gel more than one.
In said apparatus, the sorbent of filling in described absorption storage tank is that specific surface area is at 2000m
2the active carbon of/more than g; The phase-change material of filling in phase-change material storage element set in described absorption storage tank is dodecane, tridecane and the tetradecane three kinds of phase-change materials.
In said apparatus, the sorbent of filling in described pressurized reservoir is that specific surface area is at 800 ~ 1200m
2the active carbon of/g.
In said apparatus, the heat exchanger in described absorption storage tank is tubular heat exchanger; Described pump is explosion-proof pump; Described decompressor is explosion-proof decompressor; Described compressor is adjustablely determine back pressure type natural gas compressor.
In said apparatus, the refrigerant that described cold temperature control system uses, selects R404, R404a, R600a or R290 low temperature refrigerant.
In said apparatus, described device skid is also arranged on LNG truck, or be installed on other carrier loaders, and when being installed on LNG truck, this device is in parallel with LNG fuel system.
In said apparatus, the scattered gas bag of described rock gas to be recycled draws together to be repaired, the residual rock gas built in pipeline section, retail natural gas gas well, associated gas or biogas source.
A method for multifunctional natural gas scattered gas intelligence recovering device, comprises the following steps:
(1) universal coupling is utilized to be connected with the valve reserved on pipeline that diffuses of the scattered gas of rock gas to be recycled;
(2) open total valve, chromatogram detector is started working simultaneously, analyzes air inlet composition; When harmful constituent content in rock gas exceedes the security elements requirement of sorbent in absorption storage tank, when namely for methane volume concentration is less than 90%, then robot control system(RCS) switches reclaiming system to pressure recovery branch road, close the 7th electric control valve, open the 6th electric control valve, by rock gas first after pre-adsorption tanks pretreatment, be stored into pressurized reservoir; When constituent content meets the requirement of sorbent security elements, namely for methane volume concentration is greater than 90%, and when water vapour volume concentration is less than 5%, close the 6th electric control valve, open the 7th electric control valve, by rock gas first after pre-adsorption tanks pretreatment, be stored into absorption storage tank;
(3) in callback course, when suction pressure is higher than the minimum gas storage pressure of designed system, when namely bleed pressure is higher than 2.0MPa, robot control system(RCS) close compressor, rock gas directly enters storage tank without compressor; When suction pressure is lower than the minimum gas storage pressure of system, namely source of the gas force down in 2.0MPa or lower than storage tank current pressure time, control system open compressor, natural gas via compressor boost to design gas storage pressure after enter storage tank; Described storage tank comprise pressurized reservoir and absorption storage tank in more than one;
(4) rock gas is in reclaiming system, first passes through pre-adsorption tanks, fully contacts remove heavy hydrocarbon and water impurity component with the sorbent in tank, and the rock gas after purification enters in storage tank and completes absorption gas storage process;
(5) adsorb in the gas storage process of storage tank, because heat of adsorption effect causes temperature in tank to raise, the solid phase change material in absorption storage tank undergoes phase transition heat absorption, slows down or eliminate the intensification of storage tank;
(6) carrier loader of recovering device is LNG truck, and in the synergy of LNG fuel system; In the process of moving, LNG exports LNG truck from LNG fuel tank, through plate type heat exchanger and circulating refrigerant heat exchange vaporization, then after heater is heated to vaporize completely and reaches Engine Inlet Temperature requirement, enters motor; Refrigerant aspect, gas phase refrigerant is through plate type heat exchanger and LNG heat exchange condensation, after pump boosting, enter the heat exchanger evaporation endothermic that absorption storage tank is built-in, cooling tank temperature, and making phase-change material in tank solidify cold-storage, the gas phase refrigerant after evaporation, after expander step-down cooling, enters plate type heat exchanger and completes circulation; Wherein, when expander is done manual work, connecting shaft drives compressor operation, and excess power can drive small generator generate electricity and be stored into storage battery; In carrier loader running process, when storing gas in storage tank, it is in parallel with LNG loop to motor air feed that robot control system(RCS) opens recovery air circuit, reduces LNG consumption;
(7), in air feed process, robot control system(RCS) opens corresponding circuit, when tank inner pressure is higher, is adjusted to relevant pressure enters downstream through pressure-control circuit; When tank inner pressure is lower than downstream pressure, after compressor boosting, enter downstream, when utilizing compressor to be evacuated to storage tank for vacuum state, air feed terminates; When the situation larger for gas consumptions such as emergency peak regulations, use multiple stage recovering device air feed in parallel.
The utility model and prior art are compared with present situation has following beneficial effect:
1, economize on resources, protection of the environment.The utility model changes existing scattered source of the gas and comprises the low present situation of the rock gas recovery utilization rates such as pipe network dispersing gas, scattered gas well, and not only having reclaimed natural gas resource can effectively be used, and decreases the discharge of greenhouse gases, alleviates environmental pollution.
2, equipment investment and operating cost low.The utility model equipment is conventional rock gas special equipment, and the quantity of equipment is few, cost is low, and the construction investment of device is little; Lower owing to adsorbing the pressure store of accumulating, the operation back pressure of compressor can be fixed on a lower value, and compare original recovery process and compress according to downstream gas pipe network pressure, operating conditions is stablized, and compresses smaller, therefore compressor power consumption declines.
3, device moves flexibly, applied range.The utility model by equipment skid involved by technique, and is integrated on a transport vehicle, and the miniaturization of implement device, skid and mobile, realize set of device and use in multiple place, plug and play.In addition, the design of two kinds of recovery schemes, is applicable to the pipe network maintenance of various different geographical environment.
4, intelligence degree is high, and process safety is reliable.The utility model technological process is simple, and by detect and robot control system(RCS) just can realize switching and the application of carrying out specific flow process according to different makings, and involved be common equipment, application technology maturation, type selecting facilitates.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of multi-functional rock gas scattered gas intelligence recovering device.
Shown in figure: V1 is the first pressure regulator valve, V14 is the second pressure regulator valve, V2 is the first electric control valve, V3 is the second electric control valve, V4 is the 3rd electric control valve, V5 is the 4th electric control valve, V6 is the 5th electric control valve, V9 is the 6th electric control valve, V10 is the 7th electric control valve, V15 is the 8th electric control valve, V16 is the 9th electric control valve, V7 is the first stop valve, V8 is the second stop valve, V11 is the 3rd stop valve, V12 is the 4th stop valve, V13 is the 5th stop valve, E1 is compressor, E2 is pre-adsorption tanks, E3 pressurized reservoir, E4 is absorption storage tank, E5 is heat exchanger, E6 is decompressor, E7 is pump, E8 is coolant storage tank, E9 is LNG fuel tank, E10 is plate type heat exchanger, E11 is heater, E12 is motor.Also may there is other consideration valves for actual motion problems such as safety in flow process.
Fig. 2 is absorption tank structure schematic diagram.
Shown in figure: 1 is tank body (stainless steel), and 2 is into and out of tracheae, 3 is phase-change material storage unit (filling phase-change material), and 4 is refrigerant heat exchanging tube, and 5 is storage tank cavity (filling sorbent).
Specific embodiment
Below in conjunction with embodiment and accompanying drawing, model utility is described in further detail, but mode of execution of the present utility model is not limited thereto.
See Fig. 1 and Fig. 2, a kind of multifunctional natural gas scattered gas intelligence recovering device, comprises detection system, reclaiming system, power system and temperature control system;
Described detection system comprises universal coupling, total valve and chromatogram detector; Described reclaiming system comprises pressure recovery system and adsorption recovery system, and described reclaiming system comprises compressor E1, pressurized reservoir E3, pre-adsorption tanks E2, absorption storage tank E4 and valve; Described valve comprises pressure regulator valve V1, the first electric control valve V2, the second electric control valve V3, the 3rd electric control valve V4, the 4th electric control valve V5, the 5th electric control valve V6, the 6th electric control valve V9, the 7th electric control valve V10, the first stop valve V7 and the second stop valve V8; Described temperature control system comprises heat exchanger E5, pump E7, decompressor E6, coolant storage tank E8, plate type heat exchanger E10 and the 3rd stop valve V11, the 4th stop valve V12 and the 5th stop valve V13; Described power system comprise LNG fuel tank E9, plate type heat exchanger E10, heater E11, motor E12, the 9th electric control valve V16 and, the ANG helping air supply branch road be made up of the second pressure regulator valve V14 and the 8th electric control valve V15;
Described universal coupling one end is connected air inlet with the reserved valve of the scattered gas of rock gas to be recycled, and the other end is connected with total valve, and described total valve rear end bypass is connected with chromatographic detector;
Described total valve rear end is divided into two tunnels, and the 4th electric control valve V5 forms a road, is supply branch road; Another road, for reclaiming branch road, comprises a road and b road: pressure regulator valve V1 and the first electric control valve V2 is composed in series a road; Compressor E1 and the second electric control valve V3 is composed in series b road, and connect after a road and the parallel connection of b road electric control valve V4; Air feed branch road is connected with recovery branch circuit parallel connection, connects the first stop valve V7, pre-adsorption tanks E2 and the second stop valve V8 after parallel connection successively; Described second stop valve V8 rear end is divided into c road, d road and e road, c road connects the 6th electric control valve V9 and pressurized reservoir (E3) successively, d road connects the 7th electric control valve V10 and absorption storage tank E4, and e road connects the second pressure regulator valve V14 and the 8th electric control valve V15 in turn and is connected to described power system (this road belongs to power system); Wherein, described absorption storage tank E4 inside is provided with heat exchanger E5 and phase-change material storage unit, and described heat exchanger E5 connects outside temperature control system, and phase-change material storage unit is evenly distributed on tank inside;
The outlet of described pump E7 is connected with the 3rd stop valve V11,3rd stop valve V11 is connected with the import of heat exchanger E5, heat exchanger E5 outlet is connected with decompressor E6 import, decompressor E6 outlet is connected with the 5th stop valve V13,5th stop valve V13 is connected with the hot logistics import of plate type heat exchanger E10, and the hot stream outlet of plate type heat exchanger E10 is connected with the 4th stop valve V12, and the 4th stop valve V12 is connected with coolant storage tank E8 import, described coolant storage tank E8 is connected with pump E7, forms loop; Wherein, the cold logistics interface of plate type heat exchanger connects power system;
The outlet of described LNG fuel tank E9 is connected with the 9th electric control valve V16, and the 9th electric control valve V16 is connected with the cold logistics import of plate type heat exchanger E10, forms f road; In described reclaiming system, pressure regulator valve V14 and electric control valve V15 connects and composes g road, and described f road is in parallel with g road, connects heater E11 import, the import of the outlet connecting engine E12 of heater E11, and the outlet of motor E12 connects outlet pipe; The connecting shaft drive electrical generators generating of motor E12, institute's generated energy is for vehicle operating.
Described reclaiming system is also provided with flowmeter, and described flowmeter is positioned on the branch road at the second stop valve V8 place, i.e. the rear end of the second stop valve V8, for being stored in the metering of the rock gas volume in two storage tanks.
The sorbent of filling in described pre-adsorption tanks E2 comprise in molecular sieve, active carbon or silica gel more than one.
The sorbent of filling in described absorption storage tank E4 is that specific surface area is at 2000m
2the active carbon of/more than g; The phase-change material of filling in phase-change material storage element set in described absorption storage tank E4 is dodecane, tridecane and the tetradecane (volume ratio is 1:1:1, three kinds of all materials amass consumption by filling active carbon volume 5%) three kinds of phase-change materials.
The sorbent of filling in described pressurized reservoir E3 is specific surface area is 800m
2the active carbon of/g.
Heat exchanger in described absorption storage tank E4 is tubular heat exchanger; Described pump E7 is explosion-proof pump; Described decompressor E6 is explosion-proof decompressor; Described compressor E1 adjustablely determines back pressure type natural gas compressor.
The refrigerant that described cold temperature control system uses, selects R404a low temperature refrigerant.
Described device skid is also arranged on LNG truck, or be installed on other carrier loaders, and when being installed on LNG truck, this device is in parallel with LNG fuel system.
The scattered gas bag of described rock gas to be recycled draws together to be repaired, the residual rock gas built in pipeline section, retail natural gas gas well, associated gas or biogas source.
The recoverable method of multifunctional natural gas scattered gas intelligence of application said apparatus, comprises the following steps:
(1) universal coupling is utilized to be connected with the valve reserved on pipeline that diffuses of scattered source of the gas to be recycled;
(2) open total valve, chromatogram detector is started working simultaneously, analyzes air inlet composition; When the security elements that harmful constituent content in rock gas exceedes sorbent in absorption storage tank E4 requires, when namely for methane volume concentration is less than 90%, then robot control system(RCS) switches reclaiming system to pressure recovery branch road, close the 7th electric control valve, open the 6th electric control valve, by rock gas first after pre-adsorption tanks E2 pretreatment, be stored into pressurized reservoir E3; When constituent content meets the requirement of sorbent security elements, namely for methane volume concentration is greater than 90%, and when water vapour volume concentration is less than 5%, close the 6th electric control valve, open the 7th electric control valve, by rock gas first after pre-adsorption tanks E2 pretreatment, be stored into absorption storage tank E4;
(3) in callback course, when suction pressure is higher than the minimum gas storage pressure designed, when namely bleed pressure is higher than 2.0MPa, robot control system(RCS) close compressor E1, rock gas directly enters pressurized reservoir E3 and/or absorption storage tank E4 without compressor E1; When suction pressure is lower than the minimum gas storage pressure of design or lower than storage tank current pressure, namely source of the gas force down in 2.0MPa or lower than storage tank current pressure time, control system opens compressor E1, and natural gas via compressor E1 enters pressurized reservoir E3 and/or absorption storage tank E4 after boosting to design gas storage pressure;
(4) rock gas is in reclaiming system, first passes through pre-adsorption tanks E2, fully contacts remove the impurity component such as heavy hydrocarbon and water with the sorbent in tank, and the rock gas after purification enters in pressurized reservoir E3 and/or absorption storage tank E4 and completes gas storage process;
(5) adsorb storage tank E4 in gas storage process, because heat of adsorption effect causes temperature in tank to raise, the solid phase change material in absorption storage tank E4 undergoes phase transition heat absorption, slows down or eliminate the intensification of storage tank;
(6) the preferred LNG truck of the carrier loader of recovering device, and in the synergy of LNG fuel system.In the process of moving, LNG exports LNG truck from LNG fuel tank E9, through plate type heat exchanger E10 and circulating refrigerant heat exchange vaporization, then after heater E11 is heated to vaporize completely and reaches the requirement of motor E12 intake temperature, enters motor E12; Refrigerant aspect, gas phase refrigerant is through plate type heat exchanger E10 and LNG heat exchange condensation, after pump E7 boosts, enter the heat exchanger E5 evaporation endothermic that absorption storage tank E4 is built-in, cooling tank temperature, and making phase-change material in tank solidify cold-storage, the gas phase refrigerant after evaporation, after decompressor E6 expansion step-down cooling, enters plate type heat exchanger E10 and completes circulation; Wherein, when decompressor E6 expands and does manual work, can drive compressor E7 running by connecting shaft, excess power can drive small generator generate electricity and be stored into storage battery; In carrier loader running process, when storing gas in pressurized reservoir E3 and/or absorption storage tank E4, it is in parallel with LNG loop to motor air feed that robot control system(RCS) opens recovery air circuit, reduces LNG consumption;
(7) in air feed process, robot control system(RCS) opens corresponding circuit, pressurized reservoir E3 and/or absorption storage tank E4 internal pressure higher time, desorption rock gas out oppositely passes through pre-adsorption tanks E2 successively, 4th electric control valve V5, first pressure regulator valve V1, the first electric control valve V2 and the 5th electric control valve V6, enter downstream; When tank inner pressure is lower than downstream pressure, robot control system(RCS) opens compressor E1, desorption rock gas out oppositely passes through pre-adsorption tanks E2 successively, 4th electric control valve V5, compressor E1, the second electric control valve V3 and the 5th electric control valve V6, enter downstream, and when utilizing compressor E1 that storage tank is evacuated to vacuum state, air feed terminates; When the situation larger for gas consumptions such as emergency peak regulations, multiple stage recovering device air feed in parallel can be used.
Said apparatus is used to complete following examples.
Embodiment 1
For the mini gas well of a methane content less than 80% (well head outlet pressure is 1.0MPa, temperature 20 DEG C).
During application, be connected being installed on universal coupling with the reserved valve that this gas well diffuses on pipeline section; Opening device, total valve is opened, and on-line chromatograph detector is analyzed air inlet composition, judges that makings does not meet absorption storage tank storage request, systematic evaluation compression gas storage scheme.
Because suction pressure is lower than minimum gas storage pressure 3.5MPa, robot control system(RCS) opens compressor E1, natural gas via compressor E1 boosts to 4.0MPa, first pass through pre-adsorption tanks E2 remove portion impurity component, as propane, butane, carbon dioxide, hydrogen sulfide and water etc., enter pressurized reservoir E3 and complete gas storage process.Because the sorbent specific surface of filling in pressurized reservoir E3 is less, can ensure that the heat that adsorptive process produces significantly can not change the temperature of storage tank and the gas storage performance of sorbent by the heat radiation of storage tank self.
Embodiment 2
For the High Pressure Gas Transmitting Pipeline of the methane content more than 90% of one section of Awaiting Overhaul (caliber is about 1000mm, pressure 1.6MPa, temperature 20 DEG C).
During application, be connected being installed on universal coupling with the reserved valve that this gas well diffuses on pipeline section; Opening device, total valve is opened, and on-line chromatograph detector is analyzed air inlet composition, judges that makings meets absorption storage tank storage request, systematic evaluation absorption gas storage scheme.
Because suction pressure is lower than minimum gas storage pressure 3.5MPa, robot control system(RCS) opens compressor E1, natural gas via compressor E1 boosts to 4.0MPa, first pass through pre-adsorption tanks E2 remove portion impurity component, as propane, butane, carbon dioxide, hydrogen sulfide and water etc., enter absorption storage tank E4 and complete gas storage process.In absorption gas storage process, due to heat of adsorption effect, tank temperature is rising trend, the cooled in advance phase-change material heat absorption of solidifying of filling in absorption storage tank E4 is melted, take away produced heat, under making gas cylinder maintain a lower temperature all the time, ensure that the gas storage performance of sorbent.
If after absorption storage tank E4 is full of completely, when still having residual rock gas in pipeline section, robot control system(RCS) will be switched to compression gas storage branch road, continue to reclaim dispersing gas, and till all storage tanks are full of completely, compression gas storage flow process is identical with embodiment 1.
Embodiment 3
See Fig. 1, the present embodiment is identical with the device of embodiment 1.The difference of the present embodiment and embodiment 1 is, the present embodiment is the example of device place transport vehicle in running.
In the process of moving, LNG flows out transport vehicle from LNG fuel tank E9, vaporizes through plate type heat exchanger and refrigerant heat exchange, then after heater E11 is heated to vaporize completely and reaches the intake temperature requirement of motor E12, enters motor E12.When storing rock gas in pressurized reservoir E3 or absorption storage tank E4, in running process, system uses the rock gas in Partial shrinkage storage tank E3 or absorption storage tank E4 automatically, rock gas in storage tank is after the second pressure regulator valve V14 pressure regulation, mix with the LNG be vaporized, promote its mixing temperature, reduce the load of heater E11, again after heater E11 heats up, enter motor E12.
Transport vehicle in the process of moving, the refrigerant circulation of the automatic open temp control system of robot control system(RCS), system opens pump E7, refrigerant flows out from coolant storage tank E8, after pump E7 boosts, enter heat exchanger E5 to vaporize with absorption storage tank E4 heat exchange, absorption storage tank E4 temperature reduces, phase-change material absorbing and cooling temperature in the inner phase-change material unit arranged, to all solidifying, refrigerant after heat absorption vaporization enters decompressor E6 expansion decrease temperature and pressure, then after entering plate type heat exchanger E10 and LNG heat exchange condensation, gets back to coolant storage tank E8 and complete refrigerant circulation.After decompressor E6 operates, can drive pump E7 by connecting shaft, surplus power can be stored in storage battery in the generating of connecting shaft drive electrical generators.When adsorbing storage tank E4 temperature and dropping to design temperature, system stops refrigerant circulation; In running process, when adsorbing storage tank E4 temperature and being again elevated to the highest holding temperature, system opens refrigerant circulation again.
Embodiment 4
See Fig. 1, the present embodiment is identical with the device of embodiment 1.The difference of the present embodiment and embodiment 1 is, the present embodiment is for utilizing the example of the rock gas stored by multifunctional natural gas scattered gas intelligence recovering device.
For storage tank gas storage pressure for 4.0MPa, effective gas storage volume of absorption storage tank E4 and pressurized reservoir E3 is respectively 20m
3and 25m
3.
During application, be connected being installed on universal coupling with the suction port of downstream user; Open system, device start runs, and total valve is opened.
With in gas process, robot control system(RCS) opens the first electric control valve V2, the 4th electric control valve V5 and the 5th electric control valve V6, motor-operated control valve V9 or V10, rock gas in storage tank first passes through pre-adsorption tanks E2, flush out the rock gas of section store and impurity as propane, butane, carbon dioxide, hydrogen sulfide and water etc., after the first pressure regulator valve V1 is depressurized to downstream atmospheric pressure, enters downstream gas pipeline in the lump; When tank inner pressure is close to downstream atmospheric pressure, system closing first electric control valve V2, open the second electric control valve V3 and compressor E1, rock gas in storage tank first passes through pre-adsorption tanks E2, downstream gas pipeline is entered after being boosted by compressor E1, and after utilizing compressor E1 that pressure of storage tank is evacuated to vacuum state, air feed terminates.
Claims (6)
1. a multifunctional natural gas scattered gas intelligence recovering device, is characterized in that, comprise detection system, reclaiming system, power system and temperature control system;
Described detection system comprises universal coupling, total valve and chromatogram detector; Described reclaiming system comprises pressure recovery system and adsorption recovery system, and described reclaiming system comprises compressor (E1), pressurized reservoir (E3), pre-adsorption tanks (E2), absorption storage tank (E4) and valve; Described valve comprises pressure regulator valve (V1), the first electric control valve (V2), the second electric control valve (V3), the 3rd electric control valve (V4), the 4th electric control valve (V5), the 5th electric control valve (V6), the 6th electric control valve (V9), the 7th electric control valve (V10), the first stop valve (V7) and the second stop valve (V8); Described temperature control system comprises heat exchanger (E5), pump (E7), decompressor (E6), coolant storage tank (E8), plate type heat exchanger (E10), the 3rd stop valve (V11), the 4th stop valve (V12) and the 5th stop valve (V13); Described power system comprise LNG fuel tank (E9), plate type heat exchanger (E10), heater (E11), motor (E12), the 9th electric control valve (V16) and, the ANG helping air supply branch road be made up of the second pressure regulator valve (V14) and the 8th electric control valve (V15);
Described universal coupling one end is connected air inlet with the reserved valve of the scattered gas of rock gas to be recycled, and the other end is connected with total valve, and described total valve rear end bypass is connected with chromatographic detector;
Described total valve rear end is divided into two tunnels, and the 4th electric control valve (V5) forms a road, is supply branch road; Another road is for reclaiming branch road, and described recovery branch road comprises a road and b road: pressure regulator valve (V1) and the first electric control valve (V2) are composed in series a road; Compressor (E1) and the second electric control valve (V3) are composed in series b road, electric control valve (V4) of connecting after a road and the parallel connection of b road; Air feed branch road is connected with recovery branch circuit parallel connection, connects the first stop valve (V7), pre-adsorption tanks (E2) and the second stop valve (V8) after parallel connection successively; Described second stop valve (V8) rear end is divided into c road, d road and e road, c road connects the 6th electric control valve (V9) and pressurized reservoir (E3) successively, d road connects the 7th electric control valve (V10) and adsorbs storage tank (E4), and e road connects the second pressure regulator valve (V14) and the 8th electric control valve (V15) in turn and is connected to described power system; Wherein, described absorption storage tank (E4) inside is provided with heat exchanger (E5) and phase-change material storage unit, and described heat exchanger (E5) connects outside temperature control system, and phase-change material storage unit is evenly distributed on tank inside;
The outlet of described pump (E7) is connected with the 3rd stop valve (V11), 3rd stop valve (V11) is connected with the import of heat exchanger (E5), heat exchanger (E5) outlet is connected with decompressor (E6) import, decompressor (E6) outlet is connected with the 5th stop valve (V13), 5th stop valve (V13) is connected with the hot logistics import of plate type heat exchanger (E10), the hot stream outlet of plate type heat exchanger (E10) is connected with the 4th stop valve (V12), 4th stop valve (V12) is connected with coolant storage tank (E8) import, described coolant storage tank (E8) is connected with pump (E7), form loop, wherein, the cold logistics interface of plate type heat exchanger connects power system,
The outlet of described LNG fuel tank (E9) is connected with the 9th electric control valve (V16), and the 9th electric control valve (V16) is connected with the cold logistics import of plate type heat exchanger (E10), forms f road; In described reclaiming system, pressure regulator valve (V14) and electric control valve (V15) connect and compose g road, described f road is in parallel with g road, connect heater (E11) import, the import of the outlet connecting engine (E12) of heater (E11), the outlet of motor (E12) connects outlet pipe; The connecting shaft drive electrical generators generating of motor (E12).
2. multifunctional natural gas according to claim 1 scattered gas intelligence recovering device, it is characterized in that, described reclaiming system is also provided with flowmeter, described flowmeter is positioned on the branch road at the second stop valve (V8) place, the i.e. rear end of the second stop valve (V8), for being stored in the metering of the rock gas volume in two storage tanks.
3. multifunctional natural gas according to claim 1 scattered gas intelligence recovering device, it is characterized in that, the sorbent of filling in described absorption storage tank (E4) is that specific surface area is at 2000m
2the active carbon of/more than g; The phase-change material of filling in phase-change material storage element set in described absorption storage tank (E4) is dodecane, tridecane and the tetradecane three kinds of phase-change materials.
4. multifunctional natural gas according to claim 1 scattered gas intelligence recovering device, it is characterized in that, the sorbent of filling in described pressurized reservoir (E3) is that specific surface area is at 800 ~ 1200m
2the active carbon of/g.
5. multifunctional natural gas according to claim 1 scattered gas intelligence recovering device, it is characterized in that, the heat exchanger in described absorption storage tank (E4) is tubular heat exchanger; Described pump (E7) is explosion-proof pump; Described decompressor (E6) is explosion-proof decompressor; Described compressor (E1) determines back pressure type natural gas compressor for adjustable.
6. multifunctional natural gas according to claim 1 scattered gas intelligence recovering device, is characterized in that the refrigerant that described cold temperature control system uses selects R404, R404a, R600a or R290 low temperature refrigerant.
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| CN201520659768.XU CN205065273U (en) | 2015-08-29 | 2015-08-29 | Scattered gas of multi -functional natural gas intelligence recovery unit |
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| CN201520659768.XU CN205065273U (en) | 2015-08-29 | 2015-08-29 | Scattered gas of multi -functional natural gas intelligence recovery unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090739A (en) * | 2015-08-29 | 2015-11-25 | 华南理工大学 | Multifunctional intelligent scattered natural gas recovery device and method thereof |
| CN110107802A (en) * | 2019-05-22 | 2019-08-09 | 浙江科茂环境科技有限公司 | A kind of hydraulic type fuel gas recyclable device |
-
2015
- 2015-08-29 CN CN201520659768.XU patent/CN205065273U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090739A (en) * | 2015-08-29 | 2015-11-25 | 华南理工大学 | Multifunctional intelligent scattered natural gas recovery device and method thereof |
| CN110107802A (en) * | 2019-05-22 | 2019-08-09 | 浙江科茂环境科技有限公司 | A kind of hydraulic type fuel gas recyclable device |
| CN110107802B (en) * | 2019-05-22 | 2024-04-19 | 浙江科茂环境科技有限公司 | Hydraulic type combustible gas recovery device |
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