CN1088815C - Pentane pipeline liquefied gas device - Google Patents
Pentane pipeline liquefied gas device Download PDFInfo
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- CN1088815C CN1088815C CN97108842A CN97108842A CN1088815C CN 1088815 C CN1088815 C CN 1088815C CN 97108842 A CN97108842 A CN 97108842A CN 97108842 A CN97108842 A CN 97108842A CN 1088815 C CN1088815 C CN 1088815C
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- tank
- gas
- gaseous
- pressure
- pentane
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Abstract
The present invention relates to a pentane pipeline liquefied gas device which is composed of a heating and gasifying mixing loop and a circulating heating loop. Liquid pentane is filled in a fuel oil tank; an oil pump is replenished with fuel oil from an oil storing tank under the control of a liquid level control element; a heater, a boiler and a primary heat exchanger which is arranged in the fuel oil tank are arranged to control the gasifying quantity; a valve is controlled by a temperature control element to control the magnitude of firepower of the heater. Simultaneously, compressed air of a compressor is fed into a compressed air tank through a water distributing filter; then, the compressed air is fed into an atomizer in the fuel oil tank through an air flow meter and a valve; the liquid pentane which is accelerate to be evaporated is mixed with the compressed air according to specifications. The present invention in which the pentane is used as a raw material has the advantages of safety, high efficiency, stable performance and wide adaptability to the environmental temperature, the gas supplying distances and various users.
Description
The present invention relates to a kind of liquefied gas evaporator, particularly a kind of pentane pipeline liquefied gas device.
Pentane (C
5) gold-plating divides as the replenishing of natural gas liquefied petroleum gas (LPG) source of the gas, the source is than horn of plenty.And this fuel has higher calorific value (11000 kilocalories/kilogram) avirulent, and pollution-free, price is low, and normal temperature and pressure is down for liquid, and steam forces down (0 ℃ the time only be 25,38kpa), stores and transports advantages such as simple and easy.At present, national C
5About 2,800,000 tons of the gross production that gold-plating divides; Except that minute quantity as the chemical industry solvent, most of burnt by the oil refinery fire caused by lightning or other natural phenomena.If all as liquefied petroleum gas (LPG) for civilian, can solve the gas of use of 4,000 ten thousand populations, fuel year 300000000 yuans of taxes and profits, 1,000,000 tons of mark coal/years of energy saving, wooden 1,500 ten thousand mu/year of minimizing deforestation.Alleviate the disparities between supply and demand of urban and rural residents' usefulness gas greatly, help environmental protection and progress of social civilization.
Adopt pentane (C
5) manufacturing technology of liquid gas mixing air is simple, since implementing market economy, because of the oil sources supply more secure, it is non-explosive to add it, nontoxic, pollution-free, inexpensive, store and transport advantage easily, therefore, this artificial natural gas is just in the ascendant in the continent at present, from south to north, the special southeastern coastal areas more are subjected to the attention of local government, even it is no exception to connect the abundant Sichuan Province of southwestern natural gas resource, this strand artificial natural gas heat will occupy a tiny space on continent coal gas career development history, in addition, therefore and the supply system that forms need not be transformed, just can with existing rock gas, oil gas and gas pipe line integrate with, and use general petroleum gas tool.This also is one of welcome key factor of present artificial natural gas.
But in the prior art, this pentane (C
5) also there is the place that much makes enterprise ride for a fall in the liquid gas manufacturing technology.For example, how entrained air controls its explosion limit, and can factor of created gase satisfy peak usefulness gas requirement and make with low costly, how to grasp pressure, flow, these three parameters of temperature.Stop can or can not to liquefy again with time of gas and cold environment the user, how many oven former pressures should be advisable etc.
Purpose of the present invention provides a kind of safe and efficient in order to overcome deficiency of the prior art exactly, low cost, and control is convenient, and stable performance reaches the pentane pipeline liquefied gas device to all types of user wide adaptability to ambient temperature, the distance of supplying gas.
Purpose of the present invention can reach by following measure: the present invention includes heating and gasifying mixed circuit and circulation heating circuit, tank for gaseous or liquid substances in the heating and gasifying mixed circuit is airtight normal pressure canister, pass through oil pipe, oil pump connects with oil tank, be provided with heat exchanger in the tank for gaseous or liquid substances No. one time, air compressor connects with compressed air cylinder by water knockout drum, establish secondary heat exchanger in the compressed air cylinder, pass through gas flowmeter, atomizer in valve and the tank for gaseous or liquid substances links, tank for gaseous or liquid substances by high-pressure air pipe through flowmeter, pressure regulation is bored, middle air pipe, pressure-regulating box, the low pressure tracheae is delivered to user's kitchen range, heater and boiler connect with a heat exchanger in the tank for gaseous or liquid substances by pipeline, secondary heat exchanger in valve and compressed air cylinder and No. three heat exchangers being placed on the station connect again, get back in the water tank then, return boiler, in parallel by pipeline in low pressure line, vacuum pump, No. three heat exchangers, pipeline, temperature control component, pressure control valve, the circulation heating circuit that valve is formed.
Purpose of the present invention can also reach by following measure: the outlet at tank for gaseous or liquid substances and compressed air cylinder is provided with gas flowmeter respectively, and is provided with pressure control valve, temperature control component respectively; Also be provided with and observe stove, warning device, Automatic Fire Extinguisher.
The present invention compared with prior art has many advantages:
1, superior performance to environment, temperature, pipe network size wide adaptability, adapts to the area of severe cold (+15 ℃～-17 ℃) especially.
2, rational in infrastructure, to regulate sensitively, volume is little, and building closed gas station that an one thousand families resident uses only needs 100～200 square metres and gets final product.
3, technology is simple, is convenient to carry out semi-automatic and full-automatic monitoring, and it is also need not 24 hours on duty that 1 people management is only established at every station, and running cost is low.
4, little investment, the economic benefit height.All adopt home equipment, build one, invest about 20～300,000 yuan, every M with gas one thousand families station
33 yuan in gas, normal month consumption 10～15M of the family of a 3-5 mouth
3, than the rock gas in a lot of areas, liquefied petroleum gas (LPG) reduces expense 20-30%.Gross profit is about 30～40% through ying-qi station enterprise.
5, social benefit is good, and the heating value of natural gas height that native system produces is nontoxic, and is smokeless, tasteless, pollution-free, do not explode, and energy saving, the protection environment reduces the transport pressure of transporting coal and cinder.
6, it is wide to be suitable for kitchen range, to the liquid gas burner of existing all gases and model, specification, need only simple adjustment, and can use, its firing effect is better than using rock gas and liquefied petroleum gas (LPG), is easy to accept into the masses.
7, this device is fit to sub-district, big and medium-sized cities gas supply conduit, and gas pipelineization is realized in Podunk in also being fit to, and has practicability and bigger social economic benefit.
8, its boiling point of liquid pentane is 36.2 ℃, can not rely on ambient temperature to make its gasification.Prior art is to adopt direct electrically heated form to make its boiling, gasification, but this mode liquefies very easily again, and the cost height, and is dangerous.The present invention adopts the medium mode of heating and at pentane (C
5) mix with the hot air that has been heated when producing gasification, make the air-flow of gasification reach concentration and pressure, by the voltage regulating station input pipeline, flow to user's use again.At circulating heater in parallel to the suitable branch of user's low pressure line, when gas-use low peak and severe cold environment, guarantee not stopped to add gentle flowing under the immovable condition of mixed gas concentration, overcome the so-called secondary liquefaction of pentane gas.
Fig. 1 is a structural principle connection diagram of the present invention.
The present invention is described in further detail below in conjunction with accompanying drawing (embodiment):
With reference to Fig. 1, the present invention mainly comprises oil tank 1, oil pump 2, tank for gaseous or liquid substances 4, liquid level control unit 5, temperature control component 7,23,35, connects tracheae 9,12,14, press 16, water knockout drum 17, valve 20, atomizer 21, heater 25, boiler 26, heat exchanger 27,29,30 and vacuum pump 33, connects tracheae 32,34, control cabinet 39 is formed.Wherein tank for gaseous or liquid substances 4 is airtight normal pressure canister, connects with oil tank 1 by oil pipe 3, oil pump 2.In order to control the amount of vaporization of pentane, also be provided with heater 25, boiler 26, hot water (steam) that it produced enters a heat exchanger 27 in the tank for gaseous or liquid substances 4, flow to through valve 28 again and be located at the secondary heat exchanger 29 compressed air cylinder 18 in and be placed on No. three heat exchangers 30 on the field, station, get back to then in the water tank 31, supply water to boiler 26 again.The capacity of tank for gaseous or liquid substances 4 is less, by liquid level control unit 5 control oil pumps 2, constantly replenishes liquid pentane to tank for gaseous or liquid substances 4 from oil tank 1 through transport pipe 3.Can make the thermal power that is located at a heat exchanger 27 in the tank for gaseous or liquid substances 4 less like this, and reach temperature rise purpose faster.The capacity of compressed air cylinder 18 is bigger, and air pressure is also high, therefore can reduce the installed power and the number of starts of air compressor 16, stable air source is provided and has reduced cost.Also be provided with secondary heat exchanger 29 in the compressed air cylinder 18, the air of air compressor 16 enters compressed air cylinder 18 after water knockout drum 17 separates moisture content, by the secondary heat exchanger preheating, hot air enters primary atomization device in the fuel pot 4 again through flowmeter 19 and valve 20, become many tiny, uniform bubbles, join from bottom to top in the liquid in the tank for gaseous or liquid substances, the area of contact of liquid pentane and hot air is increased, strengthened the conversion of liquid → gas.And the gas of less pentane component is evenly disperseed by the bigger air component of quantity and energy at once, is full of the upper space of tank for gaseous or liquid substances 4, enters voltage regulating station 11 through high-pressure air pipe 9, gas meter 10.Temperature in tank for gaseous or liquid substances 4 and the compressed air cylinder 18 is not unalterable, and it will formulate gas quantity Q and the relation curve of using the gas time T and the relation curve of combustion gas production Q and heating-up temperature C according to user's gas consumption statistics.Heating-up temperature C and above-mentioned relation curve with the gas time T are rationally regulated and control, in general, using gas rush hour, 50-80 ℃ of the heat transfer medium temperature of a heat exchanger 27, and in the gas-use low peak time, 20-40 ℃ of heat exchanger 27 heat transfer medium temperature are got big value winter, and get the small value summer.Be provided with the time relay in the electric control cubicle 39, it can regularly send signal, and regulating valve 37 apertures change the size of heater 25 firepower and achieve the above object.
Under the uniform temperature condition, combination gas pressure size in the tank for gaseous or liquid substances mainly determines according to the concentration of combination gas, deduct the flow of air mass flow 19 by gas meter 10, be the gas flow of pentane component, the ratio of itself and air mass flow generally is controlled between the 3.5-7.Change the aperture of valve 20, i.e. the ratio of the air that can regulate is suitable and pentane component.
Because the present embodiment user disperses and is concentrated widely different, and the gas transmission distance reaches several kilometers.Therefore in the field, station, be provided with voltage regulating station 11, also outside the station, be provided with pressure-regulating box 13.Voltage regulating station is located in the field, station, gas station, it with higher outlet pressure (8-100kPa) through in air pipe 12 be transported to pressure-regulating box 13 near the user, reduce to the preceding required pressure (4-6kPa) of kitchen range again, also because the residing area of present embodiment is big with summer in the winter temperature difference round the clock, for guaranteeing that night, gas consumption reduced and the unlikely generation liquefaction of severe cold time combustion gas, in parallel by tracheae 32 in low pressure tracheae 14, vacuum decompression, circulation, heating circuit that vacuum pump 33, heat exchanger 30 and tracheae 34 are formed.When the temperature in the low pressure tracheae 14 dropped to 5-10 ℃ of combustion gas, temperature control component 35 started vacuum pumps 33 by control cabinet 39 and extracts combustion gas in the pipelines 14 and get back to the tracheae 12 from tracheae 34 after through No. three heat exchangers 30 heating again.Like this, the combustion gas in the low pressure line 14 has prevented the liquefaction of combustion gas owing to not arrheaing moving and being heated repeatedly.When special low temperature, can also improve the combustion gas intensification ability of heat exchanger 30 by the aperture of intensifying valve 37 and 28.Adopt present embodiment successfully to stop+liquefaction of 5 ℃ to-17 ℃ environment pentane gas.
The multiple time relay is housed in the electric control cubicle 39, and the operation of whole gas station can realize semi-automatic and Automatic Control and employing computerized management.In order to prevent to have a power failure, the field of standing is provided with standby power supply 38.
The present invention also is provided with and observes stove 41, can viewing system very directly perceived in the burning quality of combustion gas.And be provided with warning device 42 and automatic control fire extinguisher 43.
The present invention also is provided with valve 40, the fuel oil of heavy component is introduced burning boiler 26 in the heater 25 by tank for gaseous or liquid substances 4 bottoms, thereby saved the high-quality combustion gas.
Being embedded in underground oil tank 1 is an airtight normal temperature and pressure canister, and gasoline pump 2 passes through to connect oil pipe 3 regularly quantitatively liquid pentane (C according to the electrical signal of liquid level control unit 5
5) be input in the tank for gaseous or liquid substances 4, be provided with heat exchanger 27 in the tank for gaseous or liquid substances 4 No. one time, pressurized air by air compressor 16 enters compressed air cylinder 18 through water knockout drum 17, compressed air cylinder 18 is a metal pressure container, in establish secondary heat exchanger 29, air enters in the atomizer 21 that is located in the tank for gaseous or liquid substances 4 by valve 20 in jar after the preheating, become many uniform, tiny bubbles, quicken the liquid C of tank for gaseous or liquid substances 4
5Boiling and evaporation.Less and the molecule homodisperse pentane gas of number be several times as much as having of oneself powerful in can air molecule be carried in the gas pipeline and move, just as sand grains floats in river.Being not easy between them runs foul of each other becomes bigger micel and liquefies; Even there are indivedual pentane molecules to condense, also because the impetus of heated air stream makes its rapid evaporation owing to the attached wall effect of molecule produces.By the monitoring of temperature control component 7 and 23, control valve 37 is regulated heater 25 firepower sizes, makes boiler 26 that appropriate hot water or steam is provided, and regulates the heat of heat exchange 27,29 simultaneously by valve 28, and sendout reaches the optimized parameter proportioning.Because the boiling point of liquid also depends on the pressure of liquid superjacent air space, pressure reduces, and boiling point decreases, and pressure raises, and boiling point increases.The present invention also is provided with pressure control valve 8,24 and monitors pressure in tank for gaseous or liquid substances 4 and the compressed air cylinder 18 respectively, carries out the control of tank for gaseous or liquid substances 4 pressure by valve 20.
The pressurized air pressure tank can be at 0.2～0.7MPa, and the pressure of tank for gaseous or liquid substances is then between 0.005-0.2MPa.Get the small value when hanging down Gentle gas peak; Get big value when high temperature and gas-use low peak.
Explosion limit concentration limit after pentane and the air mixing is 1.4%, on be limited to 8.3%, the concentration that gauge table and gas flow scale 15 by flowmeter 10,19 or gasoline pump 2 can calculate combustion gas, by the adjusting of valve 20, make from air tank 18 and enter the air quantity of tank for gaseous or liquid substances 4 away from the blast band.
The present invention makes gas concentration be in 1.5～3 times of scopes of its upper limit, i.e. every cubic metre of C
5The composition scrubbed gas adds the air of 3.5～7 times of its volumes.
Pentane component after the gasification mixes an amount of air not only can not make combustion gas explode in pipeline, also prevented the liquefaction (in the special remote conveyance conduit of high pressure before entering pressure regulation, case) that pentane is formed, reduce cost and play an important role, the mixture that domestic gas is made up of carbon, hydrogen compound, and the resultant after its burning mainly is carbon dioxide (CO
2) and water (H
2O), the many pentane (C of carbon atoms
5) combustion gas (C
5H
12), the rock gas (CH that the oxygen nature that needs when burning lacks than carbon content
4) and liquefied petroleum gas (LPG) (C
3H
6, C
4H
10) require more air, it is calculated that 1M
3Liquefied petroleum gas (LPG) (50%C
3And 50%C
4) perfect combustion need about 27M
3Air, and 1M
3The perfect combustion of pentane gas then needs about 38M
3Air, because rock gas and liquefied petroleum gas (LPG) kitchen range are when structural design, its suction pressure and first and second air supply have all been got well with gas kind (calorific value) decision, the air supply allowance is few, therefore the pentane pipeline liquefied gas air quantity that suitably proportioning is certain before entering kitchen range and improve its suction pressure, the air supply amount of improving aerodynamic characteristics and increase air door is very necessary.
Improve the temperature of combination gas and the discharge pressure of increase combination gas, can both make the explosion limit expanded range, meaning has improved Security.
The present invention is between the 4-6KPa its oven former pressure by pressure-regulating box 13, and this is to non-explosive, and is nontoxic, and free of contamination pentane pipeline gas is still fool proof, reliable.
The combustion gas of gasification, when certain pressure drops to a certain temperature, the mist formation that can condense, liquefaction.The dew point of combustion gas is relevant with the component of gas and pressure.36.2 ℃ of pressure of dew point of (101kPa) pentane raise under standard pressure, and then dew point also can raise.In order to prevent that the gas liquefaction in the pipeline is except adding air when the area of cold and the gas-use low peak, reduce outside the dew point of its combustion gas, the present invention also increases the heating in vacuum device of a parallel connection in system low-voltage gas transmission zone, this device is by pipeline 32, vacuum pump 33, No. three heat exchangers 30,27, pipeline 34 constitutes the loop, at pressure-regulating box 13 terminal low pressure pipelines 14 appropriate location connecting pipelines 32, according to temperature and pressure transducer 35,36 be controlled at it may produce dew point the time, automatically start vacuum pump 33 and valve 37, improve boiler 26 heat supply temperatures, near the combustion gas of liquid phase by the heating of vacuum pump to its negative booster and No. three heat exchangers 30, again in the return pipe road 34 and 12, the rising pressure and temperature is strengthened the fuel gas flow evaporation, and circulation does not change ducted concentration and condenses thus, overcome the liquefaction of ultralow temperature again, adopted present technique can make East China and northern extremely frigid zones realize the application of pentane pipeline liquefied gas.
Above-mentioned overall process is under the condition that investment allows, and the proportioning of various data can reach full-automatic and dynamical purpose by analysing and processing in the signal input microcomputer of sensor.
Claims (3)
1, a kind of pentane pipeline liquefied gas device, it is characterized in that: comprise heating and gasifying mixed circuit and circulation heating circuit, tank for gaseous or liquid substances in the heating and gasifying mixed circuit (4) is airtight normal pressure canister, by oil pipe (3), oil pump (2) connects with oil tank (1), be provided with a heat exchanger (27) in the tank for gaseous or liquid substances (4), air compressor (16) connects with compressed air cylinder (18) by water knockout drum (17), establish secondary heat exchanger (29) in the compressed air cylinder (18), by gas flowmeter (19), atomizer (21) in valve (20) and the tank for gaseous or liquid substances (4) links, tank for gaseous or liquid substances (4) passes through high-pressure air pipe (9) through flowmeter (10), voltage regulating station (11), middle air pipe (12), pressure-regulating box (13), low pressure tracheae (14) is delivered to user's kitchen range, heater (25) and boiler (26) connect by the interior heat exchanger (27) of pipeline and tank for gaseous or liquid substances (4), secondary heat exchanger (29) in valve (28) and compressed air cylinder (18) and No. three heat exchangers (30) that are placed on the station connect again, get back to then in the water tank (31), return boiler (26), in parallel by pipeline (32) in low pressure line, vacuum pump (33), No. three heat exchangers (30), pipeline (34), temperature control component (35), pressure control valve (36), the circulation heating circuit that valve (37) is formed.
2, device according to claim 1, it is characterized in that: the outlet at tank for gaseous or liquid substances (4) and compressed air cylinder (18) is provided with gas flowmeter (10) and (19) respectively, and be provided with pressure control valve (8) and (24), temperature control component (7) and (23) respectively.
3, device according to claim 1 is characterized in that: also be provided with and observe stove (41), warning device (42), Automatic Fire Extinguisher (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97108842A CN1088815C (en) | 1996-04-23 | 1997-03-07 | Pentane pipeline liquefied gas device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96236840 | 1996-04-23 | ||
| CN96236840.7 | 1996-04-23 | ||
| CN97108842A CN1088815C (en) | 1996-04-23 | 1997-03-07 | Pentane pipeline liquefied gas device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1180150A CN1180150A (en) | 1998-04-29 |
| CN1088815C true CN1088815C (en) | 2002-08-07 |
Family
ID=25744199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97108842A Expired - Fee Related CN1088815C (en) | 1996-04-23 | 1997-03-07 | Pentane pipeline liquefied gas device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1088815C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705858A (en) * | 2012-02-03 | 2012-10-03 | 常熟市华技锅炉制造有限公司 | Gasifier |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957264A (en) * | 2010-05-26 | 2011-01-26 | 南车戚墅堰机车有限公司 | Special fuel system for diesel engine test stand |
| CN102705703B (en) * | 2012-02-03 | 2013-11-20 | 常熟市华技锅炉制造有限公司 | Gas generating device |
| CN102889471B (en) * | 2012-05-22 | 2015-03-18 | 鹤壁宝发能源科技股份有限公司 | Centralized gas supply station for pipeline special for civil dimethyl ether gas and gas supply method thereof |
| US9752727B2 (en) * | 2012-11-30 | 2017-09-05 | Chart Inc. | Heat management system and method for cryogenic liquid dispensing systems |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067447A (en) * | 1992-05-05 | 1992-12-30 | 顾建平 | A kind of method and equipment thereof that pentane is converted into universal gas |
| CN1071193A (en) * | 1991-09-24 | 1993-04-21 | 陈国祥 | A kind of method and device thereof that makes gasifying pentane |
-
1997
- 1997-03-07 CN CN97108842A patent/CN1088815C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071193A (en) * | 1991-09-24 | 1993-04-21 | 陈国祥 | A kind of method and device thereof that makes gasifying pentane |
| CN1067447A (en) * | 1992-05-05 | 1992-12-30 | 顾建平 | A kind of method and equipment thereof that pentane is converted into universal gas |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705858A (en) * | 2012-02-03 | 2012-10-03 | 常熟市华技锅炉制造有限公司 | Gasifier |
| CN102705858B (en) * | 2012-02-03 | 2014-05-14 | 常熟市华技锅炉制造有限公司 | Gasifier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1180150A (en) | 1998-04-29 |
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