Industrial fuel gas for metal welding and cutting in high efficiency and low consumption

An industrial gas and metal welding technology, which is applied in the petroleum industry, fuel, gas fuel, etc., can solve problems such as the gap between welding quality and cutting speed, the difficulty of fully replacing dissolved acetylene, and unsatisfactory welding performance, so as to reduce the amount of use , The quality of the weld is intact, the effect of less sulfide and phosphide

Inactive Publication Date: 2007-12-19
熊世平 +4
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, after use, dissolved acetylene gas has exposed more and more drawbacks and defects, such as high energy consumption, large resource consumption, and serious pollution.
For example, the production of 1 ton of acetylene gas requires 10,000-12,000 degrees of electricity, about 3 tons of limestone, about 1.6 tons of standard coke and carbon rods, etc., and a total of 3-5 tons of exhaust gas and waste residue; filling a bottle only 2 kg to dissolve Acetylene gas takes several hours, and the total gross weight of each ton of acetylene gas packaging cylinders reaches more than 24 tons, which is very inconvenient to transport and store
[0004] In the past ten years, liquefied petroleum gas (LPG) or modified liquefied petroleum gas has been introduced successively at home and abroad to replace dissolved acetylene gas for metal cutting and welding gas, but their welding performance is far fro

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] An energy-saving and efficiency-enhancing industrial gas for metal welding and cutting is characterized in that it is made by adding energy-saving and efficiency-enhancing additives to the basic gas with dimethyl ether as the main component, wherein,

[0036] The composition ratio and preparation method of the basic fuel gas are as follows: 90% of dimethyl ether and 10% of ethanol (including 0.1% of water) are mixed and stirred evenly according to the weight percentage, and the mixture is set aside.

[0037] The composition ratio and preparation method of the synergistic additive are: according to the weight percentage, first add 10% castor oil, 10% methanol, 10% octanol and 65% 150# solvent oil into the brewing kettle and stir evenly, then add the alkyl Sodium sulfonate 5%, continue to stir for 1 hour, then let it stand for 8 hours, filter out the clear liquid to obtain the synergistic additive.

[0038] Take 99.8kg of base gas by weight, then weigh 0.2kg of the above-...

Embodiment 2

[0040] An energy-saving and efficiency-enhancing industrial gas for metal welding and cutting is characterized in that it is made by adding energy-saving and efficiency-enhancing additives to the basic gas with dimethyl ether as the main component, wherein,

[0041] The composition ratio and preparation method of the basic fuel gas are as follows: 75.5% of dimethyl ether and 24.5% of methanol are mixed and stirred evenly according to the weight percentage, and then set aside.

[0042] The composition ratio and preparation method of the synergistic additive are: according to the weight percentage, first add 15% castor oil, 11% methanol, 10% octanol and 60% 150# solvent oil into the brewing kettle and stir evenly, then add the alkyl Sodium sulfonate 4%, continue to stir for 1 hour, then stand still for 8 hours, filter out the clear liquid to obtain the synergistic additive.

[0043] Take 98kg of basic gas by weight, and then weigh 2kg of the above-mentioned synergistic additives...

Embodiment 3

[0045] An energy-saving and efficiency-enhancing industrial gas for metal welding and cutting is characterized in that it is made by adding energy-saving and efficiency-enhancing additives to the basic gas with dimethyl ether as the main component, wherein,

[0046] The composition ratio and preparation method of the basic fuel gas are as follows: 99.6% of dimethyl ether and 0.4% of propane (including 0.1% of water) are mixed and stirred evenly according to the weight percentage, and the mixture is set aside.

[0047] The composition ratio and preparation method of the synergistic additive are: according to the percentage by weight, first add 12% castor oil, 10% methanol, 11% octanol and 62% 150# solvent oil into the brewing kettle and stir evenly, then add the alkyl Sodium sulfonate 5%, continue to stir for 1 hour, then let it stand for 8 hours, filter out the clear liquid to obtain the synergistic additive.

[0048] Take 99.99kg of basic gas by weight, then weigh 10g of the ...

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PUM

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Abstract

The industrial fuel gas for welding and cutting metal in high efficiency and low consumption consists of basic fuel gas with dimethyl ether as main component in 98-99.99 wt% and synergistic additive in 0.01-2 wt%. The synergistic additive is mixture of castor oil 10-15 wt%, methanol 10-20 wt%, octanol 10-20 wt%, sodium alkyl sulfonate 4-5 wt%, and 150# solvent oil 56-65 wt%. The industrial fuel gas is safe, clean and environment friendly, and has low consumption, raised flame temperature, high burning efficiency and other advantages.

Description

technical field [0001] The invention relates to a metal cutting and welding gas, in particular to an industrial gas for metal welding and cutting which is added with additives with energy-saving and synergistic effects in the base gas mainly composed of dimethyl ether. Background technique [0002] The processing of metal materials is an indispensable technical means for the development of modern society and economy and modern life. Acetylene is widely used as a gas for welding and cutting in metal processing because it has a higher combustion temperature, is more convenient to obtain, and has a better use effect. [0003] The production of acetylene from calcium carbide is a widely known technology in the early stage of coal chemical industry development nearly a hundred years ago. In 1903, the French scientist Pilcard first applied oxygen-acetylene gas to metal welding and cutting. It has a history of more than 100 years, and it has left indelible achievements in the hist...

Claims

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Application Information

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IPC IPC(8): C10L3/00
Inventor 熊世平蒋勇李跃红何生王小戬
Owner 熊世平
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