CN112961719A - Metal welding and cutting gas and preparation method thereof - Google Patents
Metal welding and cutting gas and preparation method thereof Download PDFInfo
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- CN112961719A CN112961719A CN202110142458.0A CN202110142458A CN112961719A CN 112961719 A CN112961719 A CN 112961719A CN 202110142458 A CN202110142458 A CN 202110142458A CN 112961719 A CN112961719 A CN 112961719A
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- strontium nitrate
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/003—Additives for gaseous fuels
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/12—Liquefied petroleum gas
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- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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- Pressure Welding/Diffusion-Bonding (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention is suitable for the technical field of welding and cutting gas, and provides a metal welding and cutting gas and a preparation method thereof, wherein the metal welding and cutting gas comprises fuel gas, an additive and an auxiliary agent, and the weight ratio of the fuel gas to the additive to the auxiliary agent is 1000: (8-20): (5-7); the additive comprises the following raw materials: 2-methyl phenol, m-hydroxy benzamide, ferrocene, nanocarbon, sulfurized fatty acid ester and fusel oil; the auxiliary agent comprises the following raw materials in parts by weight: modified strontium nitrate, ethanol, acetone, toluene, methyl tert-butyl ether and cyclohexane; the metal welding and cutting gas provided by the embodiment of the invention has the synergistic effect in a gas system by adding the additive and the auxiliary agent, has the advantages of low energy consumption of products, no environmental pollution, good cutting quality, flat surface of a welding line, less welding slag, higher cutting speed than acetylene, safe use, no tempering, no detonating, safe storage, stable chemical properties, no deterioration after long-term storage, light container and convenient transportation.
Description
Technical Field
The invention belongs to the technical field of welding and cutting gas, and particularly relates to metal welding and cutting gas and a preparation method thereof.
Background
Acetylene has been used as welding and cutting gas for hundreds of years, but easily forms carbon deposit after welding and cutting, is not smooth and is easily solidified near a cutting opening, so the carbon deposit needs to be ground again, and secondary cost is formed. Moreover, acetylene is easy to explode and low in safety factor, energy and power are consumed in the production process, and the environment is polluted, so that acetylene has a plurality of defects and hidden dangers in the aspects of production, storage, transportation, use, environmental protection and price.
With the development of productivity and social progress, people pay more and more attention to environmental protection, energy conservation, safety and efficiency, and try to solve the use safety problem of fuel gas to a certain extent by using an additive method, but the purpose is not achieved, and the following problems still exist:
firstly, the liquefied petroleum gas can not be completely gasified when the temperature is lower in winter, and can be completely gasified only by heating; welding and cutting quality does not reach the acetylene level, and complete replacement cannot be realized; the used persulfate, hydrogen peroxide and potassium permanganate are quickly decomposed in an alkaline aqueous solution, and the decomposition is finished within hours or days, so that the long-acting effect is not achieved; thirdly, the oxygen generated by the decomposition of the strong oxidant is mixed with the liquefied petroleum gas, and the liquefied petroleum gas is easy to explode, so that potential safety hazards exist.
Disclosure of Invention
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a metal welding and cutting gas, aiming at solving the problem of common performance of the existing metal welding and cutting gas.
The embodiment of the invention is realized in such a way that the metal welding and cutting gas comprises fuel gas, additives and auxiliaries, wherein the weight ratio of the fuel gas to the additives to the auxiliaries is 1000: (8-20): (5-7);
the additive comprises the following raw materials in parts by weight: 10-20 parts of 2-methylphenol, 8-16 parts of m-hydroxy benzamide, 5-13 parts of ferrocene, 0.2-1 part of nano carbon, 8-22 parts of sulfurized fatty acid ester and 7-15 parts of fusel oil;
the auxiliary agent comprises the following raw materials in parts by weight: 2-8 parts of modified strontium nitrate, 20-30 parts of ethanol, 12-24 parts of acetone, 10-22 parts of toluene, 8-16 parts of methyl tert-butyl ether and 5-13 parts of cyclohexane.
As a further scheme of the invention: the fuel gas is liquefied propylene, liquefied propane, a mixture of liquefied propylene and liquefied propane or a mixture of liquefied propylene and natural gas.
As a further scheme of the invention: the weight ratio of the fuel gas to the additive to the auxiliary agent is 1000:13: 6.
as a further scheme of the invention: the modified strontium nitrate is prepared by the following method:
adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; and then uniformly mixing fumed silica into the dried strontium nitrate to obtain the strontium nitrate.
As a further scheme of the invention: the dosage of the nitrobenzene sulfonic acid is 1 per mill of strontium nitrate solution, and the dosage of the gas phase method silicon dioxide is 5 per mill of the dried strontium nitrate.
As a further scheme of the invention: the additive comprises the following raw materials in parts by weight: 15 parts of 2-methyl phenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nano carbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil.
As a further scheme of the invention: the auxiliary agent comprises the following raw materials in parts by weight: 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane.
A preparation method of metal welding and cutting gas comprises the following steps:
the method comprises the following steps:
1) weighing 10-20 parts of 2-methylphenol, 8-16 parts of m-hydroxy benzamide, 5-13 parts of ferrocene, 0.2-1 part of nano carbon, 8-22 parts of sulfurized fatty acid ester and 7-15 parts of fusel oil according to parts by weight to prepare an additive for later use;
2) weighing 2-8 parts of modified strontium nitrate, 20-30 parts of ethanol, 12-24 parts of acetone, 10-22 parts of toluene, 8-16 parts of methyl tert-butyl ether and 5-13 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use;
3) taking a semi-finished product bottle, exhausting air, injecting an additive, and adding gasified fuel gas into the semi-finished product bottle to form a mixture;
4) when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
As a further scheme of the invention: the steel cylinder is exhausted with air, the additive is injected from the valve of the steel cylinder, the fuel gas is filled again to form mixed gas, and the auxiliary agent is filled into a pipeline for conveying the mixed gas to form welding and cutting gas.
As a further scheme of the invention: the fuel gas is formed by gasifying liquid fuel gas stored in a fuel gas storage tank through a vaporizer.
The metal welding and cutting gas provided by the embodiment of the invention has the synergistic effect in a gas system by adding the additive and the auxiliary agent, has the advantages of low energy consumption of products, no environmental pollution, good cutting quality, flat surface of a welding line, less welding slag, higher cutting speed than acetylene, safe use, no tempering, no detonating, safe storage, stable chemical performance, no deterioration after long-term storage, light container and convenient transportation;
meanwhile, the additive, the auxiliary agent and the fuel gas are fully mixed, so that the moisture in the fusel oil is uniformly distributed, the fusel oil can be placed for a long time without layering, the corrosion to a steel cylinder is avoided, and the hydrophilic-lipophilic balance value of water and the fuel gas can be adjusted in an auxiliary manner. A small amount of water contained in the fusel oil flows out along with the liquid fuel gas during welding and cutting, and is instantly gasified when meeting high temperature, so that the liquid fuel gas is knocked into particles, the fuel gas is fully combusted, the content of harmful substances in the waste gas is reduced, and the discharged waste gas is basically carbon dioxide and water, thereby realizing the effects of energy conservation and combustion supporting;
because the boiling points of the liquefied propylene and the liquefied propane are low, the liquefied propylene and the liquefied propane can be used in winter with lower temperature, the defect that the liquefied petroleum gas is not completely gasified in winter is overcome, and underwater cutting can be carried out;
the modified strontium nitrate is used as an auxiliary raw material and has combustion-supporting property, the used solvent can well dissolve catalytic combustion-supporting active ingredients to form a mutual soluble system, and when the fuel gas is mixed with the auxiliary, the fuel gas is favorably brought out, so that the catalytic combustion-supporting effect is realized on the fuel gas.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The metal welding and cutting gas provided by the embodiment of the invention has the synergistic effect in a gas system by adding the additive and the auxiliary agent, has the advantages of low energy consumption of products, no environmental pollution, good cutting quality, flat surface of a welding line, less welding slag, higher cutting speed than acetylene, safe use, no tempering, no detonating, safe storage, stable chemical properties, no deterioration after long-term storage, light container and convenient transportation.
The technical effects of the metal welding and cutting gas of the present invention will be further described with reference to the following embodiments, but the embodiments mentioned in the embodiments are only illustrative and explanatory of the technical solution of the present invention, and do not limit the scope of the present invention, and all modifications and substitutions based on the above principles should be within the scope of the present invention.
Example 1
Weighing 10 parts of 2-methylphenol, 8 parts of m-hydroxy benzamide, 5 parts of ferrocene, 0.2 part of nanocarbon, 8 parts of sulfurized fatty acid ester and 7 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 2 parts of modified strontium nitrate, 20 parts of ethanol, 12 parts of acetone, 10 parts of toluene, 8 parts of methyl tert-butyl ether and 5 parts of cyclohexane according to parts by weight to prepare an auxiliary agent for later use; according to the weight ratio of 1000: 8: 7 taking gas, additive and auxiliary agent, taking a semi-finished product bottle, discharging air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is liquefied propylene, liquefied propane, and a mixture of liquefied propylene and liquefied propane.
Example 2
Weighing 20 parts of 2-methylphenol, 16 parts of m-hydroxy benzamide, 13 parts of ferrocene, 1 part of nano carbon, 22 parts of sulfurized fatty acid ester and 15 parts of fusel oil according to parts by weight, and preparing the additives for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 2-8 parts of modified strontium nitrate, 20 parts of ethanol, 12 parts of acetone, 10 parts of toluene, 8 parts of methyl tert-butyl ether and 5 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 8: 7 taking gas, additive and auxiliary agent, taking a semi-finished product bottle, discharging air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is liquefied propylene, liquefied propane, and a mixture of liquefied propylene and liquefied propane.
Example 3
Weighing 10 parts of 2-methylphenol, 8 parts of m-hydroxy benzamide, 5 parts of ferrocene, 0.2 part of nanocarbon, 8 parts of sulfurized fatty acid ester and 7 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 8 parts of modified strontium nitrate, 30 parts of ethanol, 24 parts of acetone, 22 parts of toluene, 16 parts of methyl tert-butyl ether and 13 parts of cyclohexane according to parts by weight to prepare an auxiliary agent for later use; according to the weight ratio of 1000: 8: 7 taking gas, additive and auxiliary agent, taking a semi-finished product bottle, discharging air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is liquefied propylene, liquefied propane, and a mixture of liquefied propylene and liquefied propane.
Example 4
Weighing 20 parts of 2-methylphenol, 16 parts of m-hydroxy benzamide, 13 parts of ferrocene, 1 part of nano carbon, 22 parts of sulfurized fatty acid ester and 15 parts of fusel oil according to parts by weight, and preparing the additives for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 8 parts of modified strontium nitrate, 30 parts of ethanol, 24 parts of acetone, 22 parts of toluene, 16 parts of methyl tert-butyl ether and 13 parts of cyclohexane according to parts by weight to prepare an auxiliary agent for later use; according to the weight ratio of 1000: 8: 7 taking gas, additive and auxiliary agent, taking a semi-finished product bottle, discharging air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is liquefied propylene, liquefied propane, and a mixture of liquefied propylene and liquefied propane.
Example 5
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 8: 7 taking gas, additive and auxiliary agent, taking a semi-finished product bottle, discharging air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Example 6
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 12: 7 taking gas, additive and auxiliary agent, taking a semi-finished product bottle, discharging air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Example 7
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 16: 7 taking gas, additive and auxiliary agent, taking a semi-finished product bottle, discharging air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Example 8
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 20: 7 taking gas, additive and auxiliary agent, taking a semi-finished product bottle, discharging air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Example 9
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 8: taking gas, additive and auxiliary agent, taking a semi-finished product bottle, exhausting air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Example 10
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 12: taking gas, additive and auxiliary agent, taking a semi-finished product bottle, exhausting air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Example 11
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 16: taking gas, additive and auxiliary agent, taking a semi-finished product bottle, exhausting air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Example 12
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 20: taking gas, additive and auxiliary agent, taking a semi-finished product bottle, exhausting air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Example 13
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 8: 5 taking gas, additive and auxiliary agent, taking a semi-finished product bottle, exhausting air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Example 14
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 12: 5 taking gas, additive and auxiliary agent, taking a semi-finished product bottle, exhausting air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Example 15
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 16: 5 taking gas, additive and auxiliary agent, taking a semi-finished product bottle, exhausting air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Example 16
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 20: 5 taking gas, additive and auxiliary agent, taking a semi-finished product bottle, exhausting air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Comparative example 1
Adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: and 7, taking gas and an auxiliary agent, discharging air from the steel cylinder, filling the gas, and filling the auxiliary agent into a pipeline for conveying the gas to form welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Comparative example 2
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; according to the weight ratio of 1000: and 8, taking the fuel gas and the additive, exhausting air from the steel cylinder, injecting the additive from the valve of the steel cylinder, and recharging the fuel gas to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Comparative example 3
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; weighing 6 parts of strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 8: 7 taking gas, additive and auxiliary agent, taking a semi-finished product bottle, discharging air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas
Experimental example 1
The metal welding and cutting gases prepared in examples 1-16 and comparative examples 1-3 were used to perform performance tests on a specification of 45# delta-60 mm, the results of which are shown in table 1, wherein the control group was acetylene.
TABLE 1
The results show that compared with acetylene of a comparison group, the metal welding and cutting gas prepared by the embodiments 1 to 16 of the invention has the advantages of low energy consumption of products, no environmental pollution, good cutting quality, flat welding line surface, little welding slag, higher cutting speed than acetylene, safe use, no tempering, no detonating, safe storage, stable chemical performance, no deterioration after long-term storage, light container and convenient transportation;
compared with the comparative examples 1-2, the single loss of the additives and the auxiliary agents in the examples 1-16 also has influence on the overall performance of the metal welding and cutting gas, so that the additives and the auxiliary agents have synergistic effect in the system;
compared with the comparative example 3, the strontium nitrate in the auxiliary agent can enhance the overall performance of the welding and cutting gas through the modification treatment of the examples 1 to 16;
through comparison of data of examples 5-16, it can be found that different proportions of fuel gas, additives and additives also have great influence on the welding and cutting gas, and in examples 9-13, the ratio of fuel gas, additives and additives is 1000 (8-20) to 6, and the prepared welding and cutting gas has the best performance, especially the performance of the welding and cutting gas is increased and then decreased along with the increase of the additive components in comparative examples 9-13.
Experimental example 2
Comparative example 1
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 11: taking gas, additive and auxiliary agent, taking a semi-finished product bottle, exhausting air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Comparative example 2
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000:13: taking gas, additive and auxiliary agent, taking a semi-finished product bottle, exhausting air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
Comparative example 3
Weighing 15 parts of 2-methylphenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nanocarbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil according to the parts by weight, and preparing the additive for later use; adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; uniformly mixing fumed silica into the dried strontium nitrate to prepare modified strontium nitrate for later use; weighing 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use; according to the weight ratio of 1000: 14: taking gas, additive and auxiliary agent, taking a semi-finished product bottle, exhausting air, injecting the additive, and adding the gasified gas into the semi-finished product bottle to form a mixture; when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
The fuel gas is a mixture of liquefied propylene and natural gas.
The properties of the metal welding gases of comparative examples 1-3 were measured and compared with those of example 10, and the results are shown in Table 2.
TABLE 2
It can be seen by detection that the metal welding and cutting gas has the best performance when the ratio of fuel gas, additives and auxiliaries is 1000:13: 6.
In conclusion, the metal welding and cutting gas provided by the embodiment of the invention has the synergistic effect in a gas system by adding the additive and the auxiliary agent, has the advantages of low energy consumption of products, no environmental pollution, good cutting quality, flat surface of a welding line, less welding slag, higher cutting speed than acetylene, safe use, no tempering, no detonating, safe storage, stable chemical performance, no deterioration after long-term storage, light container and convenient carrying; meanwhile, the additive, the auxiliary agent and the fuel gas are fully mixed, so that the moisture in the fusel oil is uniformly distributed, the fusel oil can be placed for a long time without layering, the corrosion to a steel cylinder is avoided, and the hydrophilic-lipophilic balance value of water and the fuel gas can be adjusted in an auxiliary manner. A small amount of water contained in the fusel oil flows out along with the liquid fuel gas during welding and cutting, and is instantly gasified when meeting high temperature, so that the liquid fuel gas is knocked into particles, the fuel gas is fully combusted, the content of harmful substances in the waste gas is reduced, and the discharged waste gas is basically carbon dioxide and water, thereby realizing the effects of energy conservation and combustion supporting. Because the boiling points of the liquefied propylene and the liquefied propane are low, the liquefied propylene and the liquefied propane can be used in winter with lower temperature, the defect that the gasification of liquefied petroleum gas is incomplete in winter is overcome, and underwater cutting can be carried out.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The metal welding and cutting gas is characterized by comprising fuel gas, additives and auxiliaries, wherein the weight ratio of the fuel gas to the additives to the auxiliaries is 1000: (8-20): (5-7);
the additive comprises the following raw materials in parts by weight: 10-20 parts of 2-methylphenol, 8-16 parts of m-hydroxy benzamide, 5-13 parts of ferrocene, 0.2-1 part of nano carbon, 8-22 parts of sulfurized fatty acid ester and 7-15 parts of fusel oil;
the auxiliary agent comprises the following raw materials in parts by weight: 2-8 parts of modified strontium nitrate, 20-30 parts of ethanol, 12-24 parts of acetone, 10-22 parts of toluene, 8-16 parts of methyl tert-butyl ether and 5-13 parts of cyclohexane.
2. A metal welding and cutting gas as defined in claim 1, wherein said fuel gas is liquefied propylene, liquefied propane, a mixture of liquefied propylene and liquefied propane, or a mixture of liquefied propylene and liquefied natural gas.
3. A metal welding and cutting gas as defined in claim 1, wherein said fuel gas, additives and additives are present in a weight ratio of 1000:13: 6.
4. a metal welding and cutting gas as defined in claim 1, wherein said modified strontium nitrate is produced by the following process:
adding nitrobenzenesulfonic acid into a strontium nitrate solution, heating, concentrating and crystallizing the solution, and centrifugally dehydrating a crystal obtained by concentration; drying after dehydration to ensure that the moisture content of the strontium nitrate is less than 0.20 percent; and then uniformly mixing fumed silica into the dried strontium nitrate to obtain the strontium nitrate.
5. A metal welding and cutting gas as claimed in claim 4, characterized in that said nitrobenzene sulfonic acid is used in an amount of 1% o of the strontium nitrate solution and said fumed silica in an amount of 5% o of the dried strontium nitrate.
6. A metal welding and cutting gas as defined in claim 1, wherein said additives include the following raw materials in parts by weight: 15 parts of 2-methyl phenol, 12 parts of m-hydroxy benzamide, 8 parts of ferrocene, 0.5 part of nano carbon, 13 parts of sulfurized fatty acid ester and 10 parts of fusel oil.
7. The metal welding and cutting gas as defined in claim 1, wherein said assistant comprises the following raw materials in parts by weight: 6 parts of modified strontium nitrate, 23 parts of ethanol, 18 parts of acetone, 17 parts of toluene, 12 parts of methyl tert-butyl ether and 8 parts of cyclohexane.
8. A process for producing a metal welding and cutting gas as claimed in any one of claims 1 to 7, characterized by comprising the steps of:
1) weighing 10-20 parts of 2-methylphenol, 8-16 parts of m-hydroxy benzamide, 5-13 parts of ferrocene, 0.2-1 part of nano carbon, 8-22 parts of sulfurized fatty acid ester and 7-15 parts of fusel oil according to parts by weight to prepare an additive for later use;
2) weighing 2-8 parts of modified strontium nitrate, 20-30 parts of ethanol, 12-24 parts of acetone, 10-22 parts of toluene, 8-16 parts of methyl tert-butyl ether and 5-13 parts of cyclohexane according to parts by weight, and preparing into an auxiliary agent for later use;
3) taking a semi-finished product bottle, exhausting air, injecting an additive, and adding gasified fuel gas into the semi-finished product bottle to form a mixture;
4) when the welding and cutting gas is used, the auxiliary agent is filled into a pipeline for conveying the mixture to form the welding and cutting gas.
9. The process for producing a metal welding and cutting gas as defined in claim 8, wherein the semi-finished bottle is purged of air, the additive is injected from a valve of the semi-finished bottle, and then the gas is refilled to form a mixed gas, and the additive is injected into a pipe for transporting the mixed gas to form the welding and cutting gas.
10. A process for producing a metal welding and cutting gas as set forth in claim 8, wherein said fuel gas is vaporized from a liquid fuel gas stored in a fuel gas storage tank by a vaporizer.
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