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Metal welding and cutting gas and its preparation method

A technology for welding and cutting gas and metal, which is applied in the fields of gas fuel, petroleum industry, fuel, etc., can solve the problems of large oxygen consumption and low activity coefficient of welding and cutting gas, and achieves low oxygen consumption, wide selection range and pollution. small effect

Inactive Publication Date: 2004-07-21
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the activity coefficient of the above-mentioned welding and cutting gas is low, the oxygen consumption is large, and it cannot be used for welding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Open the angle valve of a steel cylinder with a volume of 5 kg and a volume of 12 liters, and put 0.05 grams of the catalyst manganese-neodymium-iron alloy into the steel cylinder with tweezers; mix toluene, xylene, and petroleum ether in equal amounts and take 40 ml of them with a syringe or a pressure filling device. Inject into the steel cylinder; then use a syringe to take 50ml of hydrogen peroxide and inject it into the steel cylinder. If the weather is below 0°C, add 5ml of antifreeze ethanol to the hydrogen peroxide, and close the angle valve; transport it to the gas filling station and add 3 kg of mother liquor (the mother liquor can be Liquefied petroleum gas (propane, propylene gas) can also be used), which can be shaken evenly during transportation to obtain the required metal welding and cutting gas.

Embodiment 2

[0023] First open the angle valve of a 5 kg liquid phase steel cylinder with a volume of 12 liters equipped with a metal cannula, take 4.1 g of catalyst lead antimony manganese alloy (such as lead wire) into the steel cylinder with tweezers; put toluene, xylene, petroleum ether in equal amounts Mix 60ml and inject them into the cylinder with a syringe; then inject 60ml of hydrogen peroxide into the cylinder with a syringe. If the weather is below 0°C, add 8ml of ethanol antifreeze to the hydrogen peroxide and close the angle valve; send it to the gas station for refueling. Note 5 kg of mother liquor (the mother liquor can be liquefied petroleum gas, or propane, propylene, pentane or butane, or a mixture of any two or more substances), shake well during transportation; finally compress it with air in the cylinder Add 0.2Mpa compressed air to the machine, and close the angle valve. After the preparation is completed, no compressed air is needed when the mother liquor is pure prop...

Embodiment 3

[0025] First open the angle valve of a 5 kg liquid cylinder with a volume of 12 liters equipped with a metal intubation, take 0.4 g of catalyst copper oxide and put it into the steel cylinder with tweezers; mix toluene, xylene, petroleum Mix with ether, take 30ml of the mixed solution, inject them into the cylinder with a syringe; then inject 40ml of hydrogen peroxide into the cylinder with a syringe, if the weather is below 0°C, add 10ml of ethanol antifreeze to the hydrogen peroxide, and close the angle valve; send to Add 4 kg of mother liquor to the gas filling station (the mother liquor can be liquefied petroleum gas, propane, propylene, pentane or butane, or a mixture of any two or more substances), and shake well during transportation; Metal welding and cutting gas is required.

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PUM

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Abstract

A metal welding-cutting gas is prepared from catalyst (Pb-Sb-Sn alloy, Mn-Nd-Fe alloy, or copper oxide), toluene, xylene, petroleum ether, H2O2, and mother liquid through proportionally and sequentially mixing. Its advantages are high temp (3100-3400 deg.C), low residual liquid, and no environmental pollution.

Description

technical field [0001] The invention relates to a high-efficiency, energy-saving and environment-friendly metal welding and cutting gas and a preparation method thereof, belonging to the technical field of petrochemical industry. Background technique [0002] The second-generation welding and cutting gas formula CHEMTANE2, which is researched by the American "Kaiteng" company to replace acetylene gas, has independent intellectual property rights and is recognized as a new type of welding and cutting gas in the world. With a history of 20-30 years, developed countries have paid special attention to environmental protection, energy conservation, and improvement of labor efficiency. However, the activity coefficient of the above-mentioned welding and cutting gas is low, the oxygen consumption is large, and it cannot be used for welding. In recent years, the Chinese government has paid great attention to acetylene's outdated production technology, high pollution, high energy co...

Claims

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Application Information

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IPC IPC(8): C10L3/00
Inventor 刘钢铸
Owner WUHAN UNIV
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