CN1560205A - Gas fuel - Google Patents
Gas fuel Download PDFInfo
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- CN1560205A CN1560205A CNA2004100187029A CN200410018702A CN1560205A CN 1560205 A CN1560205 A CN 1560205A CN A2004100187029 A CNA2004100187029 A CN A2004100187029A CN 200410018702 A CN200410018702 A CN 200410018702A CN 1560205 A CN1560205 A CN 1560205A
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Abstract
The invention relates to a gas fuel, mixed of two or more combustible gases, mixing hydrogen gas with natural gas to compose a gas fuel-1, and mixing water gas with natural gas to compose a gas fuel-2, and the best molar content of hydrogen gas of the gas fuel-1 in the mixed gas is 30%-45% and that of water gas of the gas fuel-2 in the mixed gas is 30%-50%. Its beneficial effects: because the above gas fuels both contains hydrogen gas and natural gas, as compared with single natural gas fuel, the flame spreading speed is high, thus increasing the heat-power conversion and beneficial to reduce the discharge of unburned hydrocarbons. As compared with single-hydrogen gas or water gas fuel, the quench-extinguishing layer has a proper thickness and can avoid the flareback phenomenon, and simultaneously it has lower cost, completely suitable to act as a clean substitutive fuel for internal-combustion engines.
Description
Technical field
The invention belongs to the substitute Fuel of Internal Combustion Engine technology, be specifically related to a kind of new gas fuel.
Background technology
Along with the worsening shortages of petroleum resources, and people seek the substitute Fuel of Internal Combustion Engine that cleans and have become one of important topic in the internal-combustion engine technology research the reinforcement of atmospheric environment protection consciousness.Sweet natural gas is a kind of very rising substitute Fuel of Internal Combustion Engine, and its major ingredient is a methane, and storage capacity is very abundant.Methane can be used as the oil engine (petrol motor) that single fuel mode is applied to the plug ignition formula, also can adopt diesel oil ignited double fuel mode to be applied to diesel engine.Utilize Sweet natural gas to be: to compare with gasoline or diesel oil fuel as the existing problem of automotive fuel, the flame propagation velocity of Sweet natural gas gas mixture is low, the extinguishing layer thickness is thick, extinguishing length disconnected, and these shortcomings make Sweet natural gas make the hydrocarbon emission height of engine, and specific fuel consumption is also bigger.Hydrogen is another kind of oil engine gas fuel substitute, it is thin to have flame propagation speed, extinguishing layer thickness, the advantage that extinguishing length is big, but there are two problems in pure hydrogen as automotive fuel: at first because hydrogen extinguishing layer is too thin, the inlet pipe tempering phenomenon occurs through regular meeting in the use, cause inlet pipe to blow out; Next is that the hydrogen cost is very high, uses uneconomical as automotive fuel separately.Contain a large amount of hydrogen and CO in the water-gas, belong to domestic fuel, because the low and easy tempering of inlet pipe of its calorific value is blown out, so water-gas does not generally use as vehicle fuel separately as vehicle fuel.
Up to the present, employed Sweet natural gas of Vehicular internal combustion engine or hydrogen fuel substitute all are with the one-component form, so can not avoid above-mentioned shortcoming.
Summary of the invention
The objective of the invention is to change at present Sweet natural gas or hydrogen as the shortcoming that one-component fuel uses in oil engine, utilize the chemical property of Sweet natural gas, hydrogen and water-gas fuel to form a kind of novel geseous fuel.
Geseous fuel proposed by the invention is to be mixed by two or more inflammable gas, wherein contains methane (CH at least
4) and hydrogen (H
2) composition.Form geseous fuel-1 by hydrogen and Sweet natural gas (major ingredient is a methane) mixing, mix by water-gas (major ingredient is hydrogen and carbon monoxide) and Sweet natural gas and form geseous fuel-2.The molar content of its hydrogen in gas mixture (mixture of hydrogen and Sweet natural gas) is 25%-50% in the geseous fuel-1; The molar content of its water-gas of fuel-2 in gas mixture is 20%-55%, can reach the ideal net effect.The molar content of its hydrogen of geseous fuel-1 in gas mixture is preferably 30%-45%, and the molar content of its water-gas of fuel-2 in gas mixture is preferably 30%-50%, can reach better net effect.For geseous fuel-2, be in order to reduce the cost of fuel, the hydrogen in the geseous fuel-1 to be replaced with the water-gas that contains hydrogen.The major ingredient of Sweet natural gas is methane (CH
4) account for about 95%.The major ingredient of water-gas is hydrogen and carbon monoxide and with a spot of carbonic acid gas.Carbon monoxide also is a kind of geseous fuel, and carbonic acid gas is a products of combustion, CO and a small amount of C0
2Existence, can not disturb the combustion processes of engine.
The characteristic parameter of Sweet natural gas and hydrogen is as shown in the table:
The characteristic contrast of Sweet natural gas, hydrogen
| Characteristic parameter | Hydrogen | Sweet natural gas |
| Kindling temperature (℃) | 571 | ?537 |
| Maximum flame propagation velocity (cm/s) | 291 | ?33.8 |
| | 35 | ?130 |
| Knock limit in the air (%) | 4.1～75 | ?5～15 |
| Chemically correct fuel (kg/kg) | 34.38 | ?17.25 |
| Low heat value (kJ/kg) | 120.1 | ?50.05 |
| High heating value (kJ/kg) | 141.8 | ?55.54 |
Beneficial effect of the present invention is: owing to all contain Sweet natural gas and hydrogen in the above-mentioned gas fuel, compare with single gas fuel, its flame propagation velocity is improved, and helps improving combustion velocity, thereby improved the hot merit efficiency of conversion, reduced specific fuel consumption; Because extinguishing length extends, the attenuation of extinguishing layer helps reducing the discharging of unburned hydrocarbon polymer simultaneously.Compare with hydrogen or water-gas single-fuel, the extinguishing layer of above-mentioned gas fuel has suitably thickness, can avoid the generation of tempering phenomenon, and the cost of this fuel is lower simultaneously, is very suitable for the substitute Fuel of Internal Combustion Engine as cleaning.
Description of drawings
Fig. 1 is engine 2000r/min, the experimental result of the total hydrocarbon discharging (THC) of geseous fuel-1 during 100% load.
Fig. 2 is the experimental result of the total specific fuel consumption (all fuel all being converted into the consumption of diesel oil according to calorific value) of geseous fuel-1.
Fig. 3 is engine 2000r/min, the experimental result of the total hydrocarbon discharging (THC) of geseous fuel-2 during 100% load.
Fig. 4 is the experimental result of the total specific fuel consumption (all fuel all being converted into the consumption of diesel oil according to calorific value) of geseous fuel-2.
Embodiment
By following specific embodiment and test-results the present invention is described in further details.
Geseous fuel-1: geseous fuel is mixed by Sweet natural gas and hydrogen, and the composition of used Sweet natural gas (molar content) is: CH
4Content 95%, other inflammable gas accounts for 1%～4%, O
2Account for 0.1%～3.0%, used hydrogen is the pure hydrogen of technical grade, and purity is greater than 98%.Test in the mixture of the two components of used hydrogen and gas, the hydrogen molar content is respectively: 0%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, testing used engine is the ZH1115 diesel engine, combustion system is supplied with for the geseous fuel intake port injection, a small amount of diesel oil ignited double fuel mode of cylinder injection.The diesel injection amount is 0.019 milliliter of every circulation, and the injection advance angle of diesel pilot is before top dead center 15 degree, and Fig. 1 is engine 2000r/min, the experimental result of the total hydrocarbon discharging (THC) during 100% load.Fig. 2 is the experimental result of total specific fuel consumption (all fuel all being converted into the consumption of diesel oil according to calorific value).Can obviously find out from figure: in practical range, along with the raising of hydrogen ratio, hydrocarbon polymer (THC) quantity discharged reduces.From Fig. 2, can also obviously find out: along with the increase of hydrogen and Sweet natural gas blending ratio, total specific fuel consumption reduces gradually, when the hydrogen molar content reaches 35%-40%, fuel consumption reaches Schwellenwert, increase the ratio of hydrogen again, total fuel consumption rises to some extent, but all is lower than the total fuel consumption of pure natural gas.Take all factors into consideration the cost of total hydrocarbon discharging and total fuel consumption and fuel, the molar content scope of hydrogen in gas mixture can reach the ideal net effect during for 25%-50%, and better content range is 30%-45%.
Geseous fuel-2: mixed by Sweet natural gas and water-gas, used water-gas composition (mol ratio) is: H
2Content 30%, CO content 50%, carbon dioxide content 18%, other foreign gas 2%, the same embodiment of used Sweet natural gas composition.Testing the molar content of used water-gas in two component gas mixtures is respectively: 0%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, and other condition same fuel-1 embodiment of experiment.Fig. 3 is engine 2000r/min, the experimental result of the total hydrocarbon discharging (THC) during 100% load, and Fig. 4 is the experimental result of total specific fuel consumption (all fuel all being converted into the consumption of diesel oil according to calorific value).Can obviously find out from figure: in practical range, along with the raising of water-gas ratio, hydrocarbon polymer (THC) quantity discharged reduces.From Fig. 4, can obviously find out: along with the increase of water-gas and Sweet natural gas blending ratio, total specific fuel consumption reduces gradually, when the water-gas molar content reaches 40%, fuel consumption reaches Schwellenwert, increase the ratio of water-gas again, total fuel consumption rises to some extent, but all is lower than the total fuel consumption of pure natural gas.Take all factors into consideration total hydrocarbon discharging and total fuel consumption, when the molar content scope of water-gas in this pair component gas mixture is 20%-55%, can reach the ideal net effect, better content range is 30%-50%.
Claims (3)
1. a geseous fuel is characterized in that being mixed by two or more inflammable gas, wherein contains methane (CH at least
4) and hydrogen (H
2) composition, form geseous fuel-1 by hydrogen and Sweet natural gas mixing, mix by water-gas and Sweet natural gas and form geseous fuel-2.
2. geseous fuel according to claim 1 is characterized in that the molar content of its hydrogen of described geseous fuel-1 in gas mixture is 25%-50%, and the molar content of its water-gas of described fuel-2 in gas mixture is 20%-55%.
3. geseous fuel according to claim 1 is characterized in that the molar content of its hydrogen of described geseous fuel-1 in gas mixture is preferably 30%-45%, and the molar content of its water-gas of described fuel-2 in gas mixture is preferably 30%-50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100187029A CN1560205A (en) | 2004-03-01 | 2004-03-01 | Gas fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100187029A CN1560205A (en) | 2004-03-01 | 2004-03-01 | Gas fuel |
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| Publication Number | Publication Date |
|---|---|
| CN1560205A true CN1560205A (en) | 2005-01-05 |
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| CNA2004100187029A Pending CN1560205A (en) | 2004-03-01 | 2004-03-01 | Gas fuel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935565A (en) * | 2009-06-29 | 2011-01-05 | 北京奥润泰克教育科技有限责任公司 | Low-carbon gas fuel and preparation method thereof |
| CN105038885A (en) * | 2015-07-13 | 2015-11-11 | 毛志明 | Low-carbon gas fuel preparation system and preparation method |
| CN108956693A (en) * | 2018-04-28 | 2018-12-07 | 中国科学院广州能源研究所 | A kind of hydrogen flame thermometry |
| CN110205172A (en) * | 2019-03-19 | 2019-09-06 | 武威福民汇科技开发有限公司 | A kind of mixed clean fuel of gas |
-
2004
- 2004-03-01 CN CNA2004100187029A patent/CN1560205A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935565A (en) * | 2009-06-29 | 2011-01-05 | 北京奥润泰克教育科技有限责任公司 | Low-carbon gas fuel and preparation method thereof |
| CN105038885A (en) * | 2015-07-13 | 2015-11-11 | 毛志明 | Low-carbon gas fuel preparation system and preparation method |
| CN105038885B (en) * | 2015-07-13 | 2017-11-17 | 毛志明 | A kind of preparation system of low-carbon gas fuel and preparation method thereof |
| CN108956693A (en) * | 2018-04-28 | 2018-12-07 | 中国科学院广州能源研究所 | A kind of hydrogen flame thermometry |
| CN108956693B (en) * | 2018-04-28 | 2020-11-27 | 中国科学院广州能源研究所 | Hydrogen flame temperature measuring method |
| CN110205172A (en) * | 2019-03-19 | 2019-09-06 | 武威福民汇科技开发有限公司 | A kind of mixed clean fuel of gas |
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