CN101139535B - Environment-protection energy-saving gas for welding and cutting - Google Patents
Environment-protection energy-saving gas for welding and cutting Download PDFInfo
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- CN101139535B CN101139535B CN2007101656516A CN200710165651A CN101139535B CN 101139535 B CN101139535 B CN 101139535B CN 2007101656516 A CN2007101656516 A CN 2007101656516A CN 200710165651 A CN200710165651 A CN 200710165651A CN 101139535 B CN101139535 B CN 101139535B
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Abstract
The invention relates to a fuel gas for welding cut that is environmental friendly and energy saving, in particular to a fuel gas that can substitute acetylene gas. The fuel gas comprises a propane gas, which is characterized in that synergist is added in certain proportion in the propane gas; the content of the propane gas is 97-99%; the content of the synergist is 5 per mill-1%, the content of the liquefiable foreign matter of gas is less than 2.5% by weight; the synergist is a mixed solution comprising combustion catalyst, smoke-removing agent, polymer degrading agent, solvent, solution assistant, and combustion assistant, etc.; the fuel gas is used as combustion gas in place of acetylene gas to weld and cut metals. The flame of the fuel gas is of high temperature, is free from reverse (return) combustion; the fuel gas is of very low explosion limit and low toxicity, free from harm to human bodies, of low comprehensive cost, high efficiency, is safe, environmental friendly and energy saving.
Description
Technical field
The present invention relates to a kind of gas for welding and cutting of environmental protection and energy saving, especially for the combustion gas of alternative acetylene gas in metal solder and the cutting process.
Background technology
In machinery manufacturing industry, the technology that adopts oxy-acetylene flame that metal is welded and cuts, existing very long history; This oxy-acetylene welding and cutting technique exist some shortcomings, also are that people want to solve for a long time; , such as: use acetylene to do combustion gas, inflammable, explosive, contaminate environment, and also cost height, energy consumption are big, simultaneously, contain toxic gases such as phosphuret-(t)ed hydrogen and hydrogen arsenide in acetylene gas, can bring injury to the people.Along with the progress of development of productivity and society, people more and more pay attention to environmental protection, energy-conservation, safety, efficient, and acetylene gas has exposed all drawbacks: power consumption is high, it is big to pollute, explosive, price are expensive.
Acetylene gas has another name called acetylene, and complex manufacturing at first will the melting in the electric furnace about 2200 ℃ with coke and calcium oxide, generates carbide of calcium (calcium carbide); 1 ton of calcium carbide of every production can produce waste residue more than 3 tons, discharges a large amount of obnoxious flavoures and waste water simultaneously.Carbide of calcium and water reaction make acetylene gas.Pressure exceeds standard and can set off an explosion in this process, and its limits of explosion wide ranges reaches 2.4-80% (V/V).Produce one ton of acetylene gas and need power consumption 3600 degree and coke more than a ton, the priming cost of every bottle of acetylene gas is more than 50 yuan.With infant industry combustion gas replaced acetylene welding is trend of the times, also is the energy-conservation and determined general orientation of environmental protection state basic policy of China.
The whole nation also has 85% cutting-welding gas still to continue to use acetylene at least at present.Subject matter is: the flame temperature of propane is lower than acetylene, can only reach 2600 ℃, can not implement to connect weldering to carbon steel, and cutting is long warm up time.Have the people to add additive based on inorganic materials the nineties in 20th century in propane, flame temperature brought up to 2800-2950 ℃, but fail to solve the fusion welding problem to carbon steel; And the source of the gas areal distribution is limited.Domestic have several families to add additive in the liquefied petroleum gas (LPG), but because temperature is compared with the acetylene temperature and do not had clear superiority, all fail to reach the performance level of comprehensive replaced acetylene.
And liquefied petroleum gas (LPG) gasification property in winter is poor, and raffinate is many, thereby promotes difficulty.More seriously because liquefied petroleum gas (LPG) component complexity, purity are different, danger lies dormant.Contain the strong oxidizer hydrogen peroxide in considerable a part of additive, and salt, bases component, steel cylinder there is the heavy corrosion effect; Some additive contains benzene, toluene and dimethylbenzene, and poisonous and harmful component such as naphthalene, sulphur.
In the last few years, people were making great efforts the gas that combustion gas can replaced acetylene be done in research always, improved workman's work situation, reduced cost, reduce energy consumption.
Summary of the invention
Purpose of the present invention just provides a kind of gas for welding and cutting of environmental protection and energy saving, uses the propane flammable gas combustion gas, and in machinery manufacturing industry, replaced acetylene is done combustion gas, comes metal is welded and cuts; The flame temperature height, adopt this combustion gas, do not have reverse burning (tempering) phenomenon; Limits of explosion is low, and low toxicity does not have harm to human body, and comprehensive cost is low, efficient, safety, energy-conserving and environment-protective; Can obtain the effect of efficient, safety, environmental protection and energy saving.
Technical scheme of the present invention is: a kind of gas for welding and cutting of environmental protection and energy saving comprises: propane flammable gas, it is characterized in that, and in propane flammable gas, add synergistic agent according to a certain percentage.
Described propane flammable gas content: 97%-99%,, synergistic agent content is: 5 ‰-1%, the gaseous impurities content that can liquefy is less than 2.5%, more than refers to combustion gas body total weight percent, and is as follows.
The mixing solutions that described synergistic agent is made of in proportion combustioncatalysts, smoke suppressor, polymer-degrading agents, solvent, solubility promoter, ignition dope; Wherein,
Combustioncatalysts, smoke suppressor, polymer-degrading agents, selection high carbon chain ferrocene deriv octyl ferrocene, methyl cyclopentadienyl ferrocene;
Solvent, alcoholic solvent is: the trimethyl carbinol, Virahol; The cyclic hydrocar-bons solvent is: hexanaphthene, tetrahydrobenzene; Ketones solvent is: acetone, pimelinketone, butanone; The oils solvent is: the 200# solvent oil;
Solubility promoter is selected nontoxic propylene glycol butyl ether, the normal paraffin mixture of C16～C30; 9,11,13-punicic acid glyceryl ester, terpenes, turps;
Ignition dope is selected magnesium naphthenate;
One of concrete prescription of described synergistic agent is: 200# solvent oil, the normal paraffin mixture of 30%:C16～C30,8%; Hexanaphthene, 6%; The propylene glycol butyl ether, 15%; Turps, 16%; Terpenes, 4%; Octyl ferrocene, 12%; , stopper, 0.5%; 9,11,13-punicic acid glyceryl ester, 3.5%; The methyl cyclopentadienyl ferrocene, 5%.
Three of the concrete prescription of described synergistic agent is: 200# solvent oil, the normal paraffin mixture of 30%:C16～C30,7%; Hexanaphthene, 8%; The propylene glycol butyl ether, 15%; Turps, 16%; Terpenes, 4%; Octyl ferrocene, 6%; Stopper, 0.5%; Magnesium naphthenate, 3%; 9,11,13-punicic acid glyceryl ester, 3.5%; The methyl cyclopentadienyl ferrocene, 7%.
Four of the concrete prescription of described synergistic agent is: 200# solvent oil, the normal paraffin mixture of 35%:C16～C30,5%; Hexanaphthene, 11%; The propylene glycol butyl ether, 10%; Turps, 19%; Terpenes, 4%; Octyl ferrocene, 11%; Stopper, 0.5%; 9,11,13-punicic acid glyceryl ester, 1%; The methyl cyclopentadienyl ferrocene, 3.5%.
Five of the concrete prescription of described synergistic agent is: 200# solvent oil, the normal paraffin mixture of 33%:C16～C30,7%; Hexanaphthene, 7%; The propylene glycol butyl ether, 13%; Turps, 6%; Terpenes, 5%; Octyl ferrocene, 8%; Stopper, 1%; Magnesium naphthenate, 10%; 9,11,13-punicic acid glyceryl ester, 1%; The methyl cyclopentadienyl ferrocene, 9%.
Six of the concrete prescription of described synergistic agent is: 200# solvent oil, the normal paraffin mixture of 20%:C16～C30,15%; Hexanaphthene, 10%; The propylene glycol butyl ether, 10%; Turps, 15%; Terpenes, 10%; Octyl ferrocene, 5%; Stopper, 1%; Magnesium naphthenate, 4%; 9,11,13-punicic acid glyceryl ester, 1%; The methyl cyclopentadienyl ferrocene, 5%.
Weldering of the present invention, the beneficial effect that cuts with combustion gas are: propane is base-material (more than 97%), adds synergistic agent (5 ‰～1%).Activate the main body medium, accelerate combustionvelocity, produce bigger heat energy, improved the flame burning temperature greatly, temperature of combustion can reach about 3400 ℃.Propane is that main combustion gas can be used for cutting under water.Synergistic agent and propane can be free, not stratified under mixing mutually, can be under the thorough mixing along with the prolongation of storage period decomposition and separation, remain stable status, diffusion evenly, vaporization is even.Make its efficiency of combustion keep permanent as one, performance is greatly brought into play, and every index has substantially exceeded acetylene gas, and effect is remarkable.
Compare with acetylene, gas safe of the present invention aspect shows very outstandingly:
(1) there is not reverse burning (tempering) phenomenon;
(2) limits of explosion is very low, is 1/13rd of acetylene, is convenient to transportation, stores and uses;
(3) low toxicity.Human body there is not harm.
(4) can cut under water.
Comprehensive cost reduces about 50% than acetylene, and use cost reduces about 20% than pure propane, finishes the processing operation of equivalent.Air consumption is lower by nearly 70% than acetylene.One bottle of combustion gas is equivalent to acetylene 6-7 bottle.
Fuel gases calorific value is 1.8 times of acetylene, and perforation is faster 55% than acetylene warm up time, and cutting speed in feet per minute is faster 20% than acetylene, and orthopedic speed is higher by 30% than acetylene.The processing operating speed is faster 1/3 than acetylene, and cuts and meet narrowly, saves starting material, and cutting section is bright and clean, and the surface does not produce carbon distribution and hardening phenomenon.
The flame temperature of combustion gas can reach about 3400 ℃, and flame temperature is higher than acetylene (about 3100 ℃).
Weldering of the present invention, the beneficial effect that cuts with combustion gas are: this combustion gas is in weldering, when cutting metal, and flame temperature can reach more than 3420 ℃; Welding tensile strength surpasses 490MPa; The clod wash angle can reach 180 °; Its unit length vertical closed the consumption pneumatolytic, and this is lower than acetylene; In the use, shorten 50% than acetylene the warm up time of boring a hole; Cutting speed in feet per minute is than acetylene fast 30%; Fast 1.75 times of the normalizing speed of 50mm girder steel than acetylene;
The cutting property and the quality of this combustion gas are better than acetylene, and cut surface is bright and clean, weldpool good fluidity, slag inclusion not, pore-free, the orthopedic not oxidation of heat;
The safety performance of this combustion gas is good, and the limits of explosion scope only is 1/3 of an acetylene; Burning-point is higher than 210 ℃ of acetylene; Container pressure only is 1/4 of an acetylene; Not tempering; Pollution-free in the use, harmless.
Description of drawings
Fig. 1 is the Production Flow Chart block diagram of the gas for welding and cutting of a kind of environmental protection and energy saving of the present invention.
Fig. 2 is the Additive Production process flow sheet of the gas for welding and cutting of a kind of environmental protection and energy saving of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail.The present invention adopts propane acetylene cutting gas as an alternative.
Compare with acetylene, the security of propane is apparent.The aerial blast of acetylene is limited to 2.55～80%, and propane has only 2.1～9.5%.The combustionvelocity of acetylene is 7.5 meter per seconds, and propane has only 0.51 meter per second, therefore can reversely not burn (tempering).Produce obnoxious flavoures such as sulfide and phosphide during industry acetylene (acetylene) burning, and the purified propylene oxide height, burning only produces carbonic acid gas and water.
Compare with liquefied petroleum gas (LPG) (main component is propane, Trimethylmethane, normal butane), characteristics are as follows: (seeing Table 1)
Table 1
| Propane | Liquefied petroleum gas (LPG) | |
| Purity (industrial goods) | 97～99％ | Propane, Trimethylmethane, normal butane mixture |
| Relative density (air=1) | 1.56 | 1.5～2 |
| Boiling point ℃ | -42.1 | -44～0.57 |
| Flash-point ℃ | -104 | -104～-67 |
| Limits of explosion | 2.1～9.5 | 2～10 |
| Minimum operating temperature ℃ | -42℃ | About 0 ℃ |
| Ignition temperature ℃ | 450 | 445～497 |
Liquefied petroleum gas (LPG) is used for domestic fuel at present more, complicated component, and many indexs are uncontrollable.Produce 250 times explosion gas during gasifying liquefied petroleum gas, brisance is 4～10 times of TNT.As industrial goods, be lower than very difficulty of 0 ℃ of use in the north.So the present invention does not adopt liquefied petroleum gas (LPG) as basic gas.
Therefore, select propane as an alternative the acetylene cutting gas be correct useful selection.
About synergistic agent, (or being called additive): the someone uses organic superoxide (as diacetyl peroxide) and methyl cyclopentyl-dialkyl-tricarbon manganium (MMT) etc. to be the fuel gas additives component.But, it is reported that strong blast may take place to store 24 hours after diacetyl peroxide is made, storing temp must not surpass 25 ℃, and its 25% solution is strong oxidizer, and is inflammable, to the shock impacts sensitivity, very easily blast.Methyl cyclopentyl-dialkyl-tricarbon manganium (MMT) is a burningrate catalyst, stops using in 1978 in the U.S., and reason is that the manganese content in the environment is increased.Also having report to select tertiary butyl base ferrocene is main component, because volatility is stronger, influence is used.
The gas for welding and cutting that the present invention uses comprises: propane flammable gas, add synergistic agent in propane flammable gas.Described propane flammable gas content is: 97%-99%,, synergistic agent content is: 5 ‰-1%, and the gaseous impurities content that can liquefy is less than 2.5%, more than refers to combustion gas body total weight percent.
The mixing solutions that described synergistic agent is made of in proportion combustioncatalysts, smoke suppressor, polymer-degrading agents, solvent, solubility promoter, ignition dope; Wherein,
Combustioncatalysts, smoke suppressor, polymer-degrading agents, selection high carbon chain ferrocene deriv are as octyl ferrocene, methyl cyclopentadienyl ferrocene;
Solvent, alcoholic solvent is: the trimethyl carbinol, Virahol; The cyclic hydrocar-bons solvent is: hexanaphthene, tetrahydrobenzene;
Ketones solvent is: acetone, pimelinketone, butanone; The oils solvent is: the 200# solvent oil;
Solubility promoter is selected nontoxic propylene glycol butyl ether, the normal paraffin mixture of C16～C30; 9,11,13-punicic acid glyceryl ester, terpenes, turps;
Ignition dope is selected magnesium naphthenate.
Six kinds of formulation of synergist tables 2 as shown in table 2 of the present invention
| 1 % fills a prescription | Prescription 3 | Prescription 4 | Prescription 5 | Prescription 6 | |
| The 200# solvent oil | ?30 | ?30 | ?35 | ?33 | ?20 |
| The normal paraffin mixture of C16～C30 | 8 | 7 | 5 | 7 | 15 |
| Hexanaphthene | 6 | 8 | 11 | 7 | 10 |
| The propylene glycol butyl ether | 15 | 15 | 10 | 13 | 10 |
| Turps | 16 | 16 | 19 | 6 | 15 |
| Terpenes | 4 | 4 | 4 | 5 | 10 |
| Octyl ferrocene | 12 | 6 | 11 | 8 | 5 |
| Stopper | 0.5 | 0.5 | 0.5 | 1 | 1 |
| Magnesium naphthenate | 3 | 10 | 4 | ||
| 9,11,13-punicic acid glyceryl ester | 3.5 | 3.5 | 1 | 1 | 5 |
| The methyl cyclopentadienyl ferrocene | 5 | 7 | 3.5 | 9 | 5 |
Annotate: notes are the per-cent of mixing solutions gross weight in the table 2;
One of concrete prescription of described synergistic agent is: 200# solvent oil, 30% (notes into the per-cent of mixing solutions gross weight, as follows): the normal paraffin mixture of C16～C30,8%; Hexanaphthene, 6%; The propylene glycol butyl ether, 15%; Turps, 16%; Terpenes, 4%; Octyl ferrocene, 12%; , stopper, 0.5%; 9,11,13-punicic acid glyceryl ester, 3.5%; The methyl cyclopentadienyl ferrocene, 5%.This prescription 1: octyl ferrocene is more, and flame temperature is higher, and the cigarette amount is less, can make polymer degradation.Can be used for the higher metal of thickness.
Three of the concrete prescription of described synergistic agent is: 200# solvent oil, the normal paraffin mixture of 30%:C16～C30,7%; Hexanaphthene, 8%; The propylene glycol butyl ether, 15%; Turps, 16%; Terpenes, 4%; Octyl ferrocene, 6%; Stopper, 0.5%; Magnesium naphthenate, 3%; 9,11,13-punicic acid glyceryl ester, 3.5%; The methyl cyclopentadienyl ferrocene, 7%.This prescription: adding magnesium naphthenate can be combustion-supporting.Four of the concrete prescription of described synergistic agent is: 200# solvent oil, the normal paraffin mixture of 35%:C16～C30,5%; Hexanaphthene, 11%; The propylene glycol butyl ether, 10%; Turps, 19%; Terpenes, 4%; Octyl ferrocene, 11%; Stopper, 0.5%; 9,11,13-punicic acid glyceryl ester, 1%; The methyl cyclopentadienyl ferrocene, 3.5%.This prescription: 200# solvent oil and terebinthine add-on are more, and ferrocene deriv is fully dissolved.
Five of the concrete prescription of described synergistic agent is: 200# solvent oil, the normal paraffin mixture of 33%:C16～C30,7%; Hexanaphthene, 7%; The propylene glycol butyl ether, 13%; Turps, 6%; Terpenes, 5%; Octyl ferrocene, 8%; Stopper, 1%; Magnesium naphthenate, 10%; 9,11,13-punicic acid glyceryl ester, 1%; The methyl cyclopentadienyl ferrocene, 9%.This prescription: stopper and magnesium naphthenate are more, prevent the unsaturated double-bond polymerization, can prolong the storage time.
Six of the concrete prescription of described synergistic agent is: 200# solvent oil, the normal paraffin mixture of 20%:C16～C30,15%; Hexanaphthene, 10%; The propylene glycol butyl ether, 10%; Turps, 15%; Terpenes, 10%; Octyl ferrocene, 5%; Stopper, 1%; Magnesium naphthenate, 4%; 9,11,13-punicic acid glyceryl ester, 1%; The methyl cyclopentadienyl ferrocene, 5%.This prescription: 9,11,13-18 carbon triolefin glyceride are more, increased natural product, improved temperature of combustion, help environmental protection.
Below introduce the Production Flow Chart of the gas for welding and cutting of a kind of environmental protection and energy saving of the present invention.
Fig. 1 is the propane fuel gas flow path figure that contains synergistic agent.As can be seen from the figure:
Synergistic agent is injected steel cylinder with liquid-filling machine, and pressurization charges into propane, makes the synergy combustion gas.When the welding metal, combustion gas and oxygen mix, burning reach behind the preset temperature metal solder or cutting.
Fig. 2 is the process flow sheet of preparation gas synergist.(numeral is an equipment serial number in the figure centre circle .)
Fuel gas additives is made up of the raw material of solid and two kinds of forms of liquid.Solid material is transported in the solid distribution trough 4 by travelling belt 3 by being added to batching in the batch hopper 2 by active lifter 1 on guide rail 6, is added to then in the reactor 5 and mixes with liquid starting material.Liquid starting material divides two portions, and a part is joined in the tempering tank 11 by storage tank 10, is added to then in the liquid material mixing tank 7, mixes with another part liquid starting material from liquid feeder 8, is added to after the stirring that reactor 5 is interior to be mixed with solid material.Through stirring, the cooling blowing is to subsider 12 interior sedimentations after for some time of heating up.Clear liquid is injected in the whizzer 14 with impeller pump 13 and separates, and carries out secondary settlement in steel drum 18, and with duplex strainer 15 vacuum filtrations, vacuum is from vacuum tank 16; It is standby that the gas synergist the finished product enter finished product jar 17.
Total the above, the gas for welding and cutting of a kind of environmental protection and energy saving of the present invention uses propane flammable gas, and adds synergistic agent in proportion substitute the acetylene cutting gas in propane flammable gas, and metal is welded and cuts; Have the flame temperature height, do not have reverse burning (tempering) phenomenon; Limits of explosion is very low, and low toxicity does not have harm to human body, and comprehensive cost is low, and the characteristics of efficient, safety, environmental protection and energy saving have reached the object of the invention.
Allly conceive identical technical scheme all within claim protection domain of the present invention with the present invention.
Claims (5)
1. the gas for welding and cutting of environmental protection and energy saving comprises: propane flammable gas, in propane flammable gas, add synergistic agent according to a certain percentage, and it is characterized in that,
Described propane flammable gas content: 97%-99%, synergistic agent content is: 5 ‰-1%, the gaseous impurities content that can liquefy is less than 2.5%, more than refers to combustion gas body total weight percent;
One of concrete prescription of described synergistic agent is: press the synergistic agent total weight percent, 200# solvent oil, 30%; The normal paraffin mixture of C16～C30,8%; Hexanaphthene, 6%; The propylene glycol butyl ether, 15%; Turps, 16%; Terpenes, 4%; Octyl ferrocene, 12%; Stopper, 0.5%; 9,11,13-punicic acid glyceryl ester, 3.5%; The methyl cyclopentadienyl ferrocene, 5%.
2. according to the gas for welding and cutting of the described a kind of environmental protection and energy saving of claim 1, it is characterized in that three of the concrete prescription of described synergistic agent is: press the synergistic agent total weight percent, 200# solvent oil, the normal paraffin mixture of 30%:C16～C30,7%; Hexanaphthene, 8%; The propylene glycol butyl ether, 15%; Turps, 16%; Terpenes, 4%; Octyl ferrocene, 6%; Stopper, 0.5%; Magnesium naphthenate, 3%; 9,11,13-punicic acid glyceryl ester, 3.5%; The methyl cyclopentadienyl ferrocene, 7%.
3. according to the gas for welding and cutting of the described a kind of environmental protection and energy saving of claim 1, it is characterized in that four of the concrete prescription of described synergistic agent is: press the synergistic agent total weight percent, 200# solvent oil, the normal paraffin mixture of 35%:C16～C30,5%; Hexanaphthene, 11%; The propylene glycol butyl ether, 10%; Turps, 19%; Terpenes, 4%; Octyl ferrocene, 11%; Stopper, 0.5%; 9,11,13-punicic acid glyceryl ester, 1%; The methyl cyclopentadienyl ferrocene, 3.5%.
4. according to the gas for welding and cutting of the described a kind of environmental protection and energy saving of claim 1, it is characterized in that five of the concrete prescription of described synergistic agent is: synergistic agent total weight percent, 200# solvent oil, the normal paraffin mixture of 33%:C16～C30,7%; Hexanaphthene, 7%; The propylene glycol butyl ether, 13%; Turps, 6%; Terpenes, 5%; Octyl ferrocene, 8%; Stopper, 1%; Magnesium naphthenate, 10%; 9,11,13-punicic acid glyceryl ester, 1%; The methyl cyclopentadienyl ferrocene, 9%.
5. according to the gas for welding and cutting of the described a kind of environmental protection and energy saving of claim 1, it is characterized in that six of the concrete prescription of described synergistic agent is: synergistic agent total weight percent, 200# solvent oil, the normal paraffin mixture of 20%:C16～C30,15%; Hexanaphthene, 10%; The propylene glycol butyl ether, 10%; Turps, 15%; Terpenes, 10%; Octyl ferrocene, 5%; Stopper, 1%; Magnesium naphthenate, 4%; 9,11,13-punicic acid glyceryl ester, 5%; The methyl cyclopentadienyl ferrocene, 5%.
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| CN101474701B (en) * | 2008-10-09 | 2011-04-20 | 青岛上联机械设备有限公司 | High-efficient energy-saving environment friendly welding and cutting device |
| CN102041119A (en) * | 2010-12-10 | 2011-05-04 | 山东居世界实业有限公司 | Mixed welding and cutting gas |
| CN102618340B (en) * | 2012-04-11 | 2014-04-16 | 刘越 | Efficient cutting gas used for continuous casting and based on coke oven gas |
| CN103320190B (en) * | 2013-06-25 | 2015-01-21 | 苍溪县大通天然气投资有限公司 | Welding and cutting gas and preparation method thereof |
| DE102014018884A1 (en) * | 2014-12-17 | 2016-06-23 | Linde Aktiengesellschaft | Gas mixture and process for arc joining or material processing with reduced pollutant emissions |
| CN105754672A (en) * | 2016-02-25 | 2016-07-13 | 李春玉 | Energy-saving environment-friendly synergistic coal-based industrial fuel gas |
| CN105805772B (en) * | 2016-03-25 | 2019-02-22 | 胡少辉 | A kind of throttling tributary bubble techniques method using miniature blender |
| CN109609218B (en) * | 2019-01-10 | 2020-04-03 | 江苏信驰能源科技有限公司 | Natural gas combustion synergist |
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| EP1194513A1 (en) * | 1999-05-12 | 2002-04-10 | L'air Liquide, S.A. à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude | Combustible gas mixture and use thereof in gas cutting operations |
| CN1431282A (en) * | 2003-01-26 | 2003-07-23 | 徐连蕴 | Gas for soldering or cutting metals and its preparing method |
| CN1896200A (en) * | 2006-06-23 | 2007-01-17 | 北京奔放科技发展有限公司 | Industrial welding and cutting gas with environmental-protective and energy-saving functions |
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| EP1194513A1 (en) * | 1999-05-12 | 2002-04-10 | L'air Liquide, S.A. à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude | Combustible gas mixture and use thereof in gas cutting operations |
| WO2001092443A1 (en) * | 2000-05-29 | 2001-12-06 | Gases Medicos E Industriales Matheson Sociedad Anonima | Multi-reinforced hydrocarbon for melting and casting processes |
| CN1431282A (en) * | 2003-01-26 | 2003-07-23 | 徐连蕴 | Gas for soldering or cutting metals and its preparing method |
| CN1896200A (en) * | 2006-06-23 | 2007-01-17 | 北京奔放科技发展有限公司 | Industrial welding and cutting gas with environmental-protective and energy-saving functions |
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