CN1250078A

CN1250078A - Model HGL5 metal welding and cutting gas

Info

Publication number: CN1250078A
Application number: CN 98121620
Authority: CN
Inventors: 丁猛野
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-10-05
Filing date: 1998-10-05
Publication date: 2000-04-12

Abstract

The present invention discloses one liquefied petroleum gas for welding and cutting metal. It consists of two parts: mother liquor and additive. The mother liquor consists of C3+C4 60-95% and C1+C2+C5 1-10% and the additive consists of diferromolybdenum, pentylene isomer, pentane isomer, hexane isomer, aldehyde, etc. The gas can result in high welding and cutting quality.

Description

HGL5 type metal welding and cutting gas

The invention discloses a component of metal welding and cutting gas, in particular to a component of liquefied petroleum cutting gas.

As we know, 90% of industrial fuel gas consumption in China is acetylene, which basically belongs to a single energy structure, a large amount of calcium carbide must be consumed every year by the single energy structure, and a large amount of electric energy and coke are consumed in the production process of the calcium carbide, so the acetylene gas is converted from high-grade energy (power supply + coke), the calcium carbide is a high-energy-consumption product, and therefore, the acetylene is also a high-energy-consumption product.

The industrial method for preparing calcium carbide is

Acetylene gas now used in large quantities is And the gas generating amount of the calcium carbide is 250-300 liters per kg.

From CaO → C₂H₂In the process of (2), the energy conversion utilization rate is about 35%. Therefore, the acetylene gas is expensive and high in energy consumption, and in addition, the acetylene is one of important chemical raw materials, and is unreasonable from the perspective of comprehensive utilization of resources and energy conservation when used as fuel gas.

The acetylene gas is accompanied with waste residue to pollute the environment in the production process, and the industrial acetylene gas also contains 0.15 percent (volume ratio) of H₂S and 0.08% (by volume) PH₂The impurities have special odor and toxicity, and the operator can have symptoms such as dizziness and the like if inhaling a certain amount of acetylene gas.

When acetylene is used as fuel gas, backfire accidents often occur, so that the loss is caused to enterprises, and scientific workers seek new fuel gas with low price, high quality, cleanness and safety to replace acetylene in a hundreds of ways, so as to achieve the purposes of reducing energy consumption and reasonably utilizing resources.

The present invention aims at providing the components of liquefied petroleum metal welding and cutting gas.

In order to achieve the above purpose, the invention adopts the following scheme: a liquefied petroleum gas for welding and cutting is composed of mother liquid and additive, and the mother liquid is C₂+C₄60～95％，C₁+C₂+C₅1-10%; the additive comprises the following components: 0.3-0.8 g/kg of iron dimolybdenum, 0.1-0.6 g/kg of benonil, 0.5-5% of pentadiene isomer, 0.2-4% of pentane isomer and hexane0.2-4% of isomer and 0.1-3% of aldehyde.

The invention has the advantages that:

1. it is a by-product in the process of cracking petroleum in oil refinery, and its energy consumption is low in preparation process, so that it can attain the goal of saving energy for utilizing resources.

2. Its cost is low, and its cost is only about 50% of that of acetylene.

3. The combustion product of which is CO₂And H₂O， It does not pollute the environment during the production process, and does not have PH₂And H₂S, harmful gases.

4. It has the advantages of inactive chemical property, small explosion limit range, slow combustion speed, uneasy generation of backfire, higher ignition temperature and safe and reliable use compared with acetylene.

5. Practice proves that the cutting quality is better than that of acetylene.

6. At present, liquefied petroleum gas resources are rich in China, supply and marketing networks are perfect, and a gas source is sufficient to create conditions for popularization and application of the liquefied petroleum gas.

The following examples are given for illustrative purposes.

The components of the liquefied petroleum welding and cutting gas are characterized in that the additive dimolybdenum iron is 0.4-0.6 g/kg, the additive binoni is 0.15-0.25 g/kg, the pentadiene isomer is 1-2%, the pentane isomer is 0.8-1.5%, the hexane isomer is 0.8-1.5%, and the aldehyde group is 0.4-0.8%. The pentadiene isomers are: cyclopentadiene isomers, isoprene isomers, n-pentadiene isomers, neopentadiene isomers, and alkapentadiene isomers; the pentane isomers are: cyclopentane isomers, isopentane isomers, n-pentane isomers, neopentane isomers, and cyclopentane isomers; the hexane isomers are: cyclohexane isomers, isohexane isomers, n-hexane isomers, neohexane isomers, and cyclohexane isomers; the aldehydes are formaldehyde, acetaldehyde, and propionaldehyde.

Example (b):

the mother liquor is C₂+C₄90％，C₁+C₂+C₅10 percent; the additive is as follows: 3g/kg of iron dimolybdenum, 0.5g/kg of Guineani, 1.5% of cyclopentadiene, 1% of neopentane, 1.5% of cyclohexane and 0.7% of acetaldehyde.

Claims

1. The components of HGL5 type metal welding and cutting gas are characterized by that it is formed from two portions of additive of mother liquor, its mother liquor is C_a+C₄60～95％，C₁+C₂+C₅1-10%; the additive comprises the following components: 0.3-0.8 g/kg of iron dimolybdenum, 0.1-0.6 g/kg of benonil, 0.5-5% of pentadiene isomer, 0.2-4% of pentane isomer, 0.2-4% of hexane isomer and 0.1-3% of aldehyde.

2. The component of HGL5 type metal cutting gas as claimed in claim 1, wherein the additive is dimolybdenum iron 0.4-0.6 g/kg, guineanib 0.15-0.25 g/kg, pentadiene isomer 1-2%, pentane isomer 0.8-1.5%, hexane isomer 0.8-1.5%, aldehyde 0.4-0.8%.

3. The composition of a metal welding and cutting gas of the HGL5 type according to claim 1, wherein the pentadiene isomer is: cyclopentadiene isomers, isoprene isomers, n-pentadiene isomers, neopentadiene isomers, and alkapentadiene isomers; the pentane isomer is: cyclopentane isomers, isopentane isomers, n-pentane isomers, neopentane isomers, and cyclopentane isomers; the hexane isomer is as follows: cyclohexane isomer, isohexane isomer, neohexane isomer and chain hexane isomer, wherein the aldehyde is formaldehyde, acetaldehyde or propionaldehyde.