Flame cutting gas taking natural gas as raw material

Abstract

The invention relates to the technical field of metal flame cutting, in particular to flame cutting gas taking natural gas as a raw material. According to the flame cutting gas taking natural gas as araw material, the flame cutting gas is composed of liquefied natural gas and an additive, and the additive is composed of the following components in parts by weight: 35-60 parts of ethyl acetate, 16-30 parts of pentene, 15-20 parts of n-pentane, 10-20 parts of cyclohexane and 2-6 parts of sorbitan oleate. According to the flame cutting gas, the additive is low in price and easy to purchase, enough intermediate chemicals can be provided for combustion of the natural gas, the combustion speed of the natural gas in oxygen is increased, and then the combustion temperature is increased; the flamecutting gas has the characteristics of simple production process, safety in use, no tempering during cutting and the like, the specific gravity of cutting gas is lower than that of air, and indoor operation can be performed.

Description

Technical field [0001] The invention relates to the technical field of metal flame cutting, in particular to a flame cutting gas using natural gas as a raw material. Background technique [0002] At present, industrial cutting is mainly based on acetylene gas and propane. However, the raw material of acetylene, calcium carbide, is obtained from six energy conversions. The average production of 1 ton of calcium carbide consumes 3300-3500 kWh and 1 ton of coke. Severe pollution caused by the environment has become a social problem of widespread concern. Acetylene gas has high energy consumption, high cost, flammability and explosiveness, which seriously damages resources and pollutes the environment; propane cutting because the cutting gas combustion temperature is not high, which affects the cutting speed and quality, it is heavier than air and tends to accumulate, and there is a high risk of accidents. The fatal risk of not being able to operate in a limited space has caused the...

AI Technical Summary

Problems solved by technology

[0002] At present, industrial cutting is still dominated by acetylene gas and propane. However, calcium carbide, the raw material for acetylene production, is obtained through six energy conversions. The average production of 1 ton of calcium carbide consumes 3300-3500 kWh of electricity and 1 ton of coke. Serious pollution caused by the environment has become a social problem of widespread concern

Acetylene gas has high energy consumption, high cost, is flammable and explosive, seriously damages resources, and pollutes the environment; for propane cutting, because the combustion temperature of the cutting gas is not high, it affects the cutting speed and quality. The fatal risk of not being able to work in a limited space has led to no widespread promotion in the country; natural gas flame cutting has been used in many areas, but it has not been widely promoted due to the disadvantages of high price, complicated production process and unstable product quality.

In 2015, Wang Dali invented "A Flame Cutting Gas Using Natural Gas as Raw Material" patent number: ZL.201510227209.6, which solved the key problem of the flame temperature of natural gas cutting, but there were problems such as high production cost and difficult procurement of additive raw materials

However, there are many types of existing combustion-supporting additives and their performance is unstable. Therefore, it is urgent to develop a new type of flame cutting gas that can be used for metal cutting and uses natural gas as raw material to meet people's needs.

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