Low-temperature liquid synthetic welding gas

A low-temperature liquid, welding and cutting gas technology, used in gas fuel, welding equipment, gas flame welding equipment, etc., can solve the problems of solidification of combustion-supporting additives, equipment damage, blockage, etc., to achieve safe ignition, reduce emissions, and light gas effects.

Active Publication Date: 2012-10-17
张科发
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for low-temperature liquefied natural gas, the above-mentioned combustion-supporting additives cannot be used directly because the temperature of liquefied natural gas is lower than -160°C. If the above-mentioned combustion-supporting additives are added to the LNG cylinder, the combustion-supporting additives will solidify and form blockages, causing equipment damage to

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The first step: the synthesis of high-energy fuel, take 7L of n-butyltrimethylmethane, 8L of ethylbenzene, 22L of absolute ethanol, 18L of ethylene glycol methyl ether, 15L of butanone, 14L of isopentane, and ethylcyclohexane 14L, borane 2L and mix well.

[0021] Step 2: Mix 2L of the above raw materials with 50kg of propane gas.

[0022] Step 3: Add 1.5L of synthesized high-energy fuel into a 100kg liquefied natural gas cylinder, then fill it with liquefied natural gas, and synthesize low-temperature welding and cutting gas after filling.

Embodiment 2

[0024] The first step: the synthesis of high-energy fuel, take 5L of n-butyltrimethylmethane, 10L of ethylbenzene, 25L of absolute ethanol, 16L of ethylene glycol methyl ether, 13L of butanone, 13L of isopentane, and ethylcyclohexane 15L, borane 3L and mix well.

[0025] Step 2: Mix 1.5L of the above raw materials with 30kg of propane gas.

[0026] Step 3: Add 0.9L of the synthesized high-energy fuel into a 60kg liquefied natural gas cylinder, then fill it with liquefied natural gas, and synthesize low-temperature welding and cutting gas after filling.

Embodiment 3

[0028] The first step: the synthesis of high-energy fuel, take 9L of n-butyltrimethylmethane, 8.5L of ethylbenzene, 23L of absolute ethanol, 19L of ethylene glycol methyl ether, 16L of butanone, 13L of isopentane, and ethylcyclohexane Alane 9L, borane 2.5L and mix well.

[0029] Step 2: Mix 0.45L of the above raw materials with 15kg of propane gas.

[0030] Step 3: Add 1.8L of synthesized high-energy fuel into a 120kg liquefied natural gas cylinder, then fill it with liquefied natural gas, and synthesize low-temperature welding and cutting gas after filling.

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PUM

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Abstract

The invention discloses a low-temperature liquid synthetic welding gas, which is prepared by the following steps of: using liquefied natural gas as a main fuel; adding a high energy fuel with low melting point into the liquefied natural gas, wherein the high energy fuel with low melting point is prepared from ingredients according to the following volume ratio: 5-10% of nbutyl trimethyl methane, 6-12% of ethylbenzene, 18-25% of anhydrous ethanol, 13-21% of ethylene glycol monobutyl ether, 11-18% of butanone, 10-17% of isopentane, 7-15% of ethyl cyclohexane and 2-3.5% of borane; mixing a synthetic mixed liquid with propane C3H8 or tetrahydrothiophene C4H8S according to the proportion of 3-5%; and adding the mixed high energy fuel with low melting point into the liquefied natural gas according to the proportion of 1.5%. Dispersiveness of various fuels is raised, and the fuels can be more uniformly mixed with the liquefied natural gas. The gasification rate of the liquefied natural gas is enhanced by the adoption of high proportion of propane or tetrahydrothiophene, the quality of the fuels is raised, and the effect is obvious.

Description

technical field [0001] The invention relates to a high-performance metal welding and cutting gas, in particular to a low-temperature liquid synthetic welding and cutting gas. Background technique [0002] At present, in the field of metal welding and cutting, acetylene gas is mainly used as the main raw material gas for metal welding and cutting. Due to the high temperature of the acetylene flame, it is generally used in the field of metal processing. Therefore, most of the industrial welding and cutting gas consumption in my country still uses acetylene gas. . [0003] With the development of productivity and the progress of society, people have a clearer understanding of the disadvantages and defects exposed by acetylene gas. In the 1970s, developed countries in Europe, America, and Japan began to phase out acetylene gas and replaced it with industrial gases such as propane, propylene, and natural gas. [0004] According to statistics, in 2006, the calcium carbide industr...

Claims

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Application Information

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IPC IPC(8): C10L3/00C10L3/06B23K5/00B23K7/00
Inventor 张科发
Owner 张科发
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