Common application, separation methods and principles of acetylene gas supplier in China

Author : rticlesca rticlesca | Published On : 26 May 2026

Generally, acetylene gas suppliers in China do not have strict requirements for the purity of the products. The production volume of special gases is very small. However, depending on different uses, there are extremely strict requirements for the purity and composition of different special gases, the allowable content of harmful impurities, and the packaging, storage, and transportation of the products. These are high-tech and high-value-added products. Usually, special gases are classified into three categories: high-purity or ultra-pure gases, standard calibration gases, and mixed gases with specific compositions.

Acetylene gas suppliers in China can be divided into general acetylene gas suppliers in China and special acetylene gas suppliers in China. The manufacturers of acetylene gas suppliers in China will mainly tell you the applications and separation methods of common acetylene gas suppliers in China, as well as the separation principles. It is a comprehensive summary.

Generally, acetylene gas suppliers in China do not have strict requirements for the purity of their products. The production volume of special gases is very small. However, depending on different applications, there are extremely strict requirements for the purity and composition of different special gases, the allowable content of harmful impurities, and the packaging, storage, and transportation of the products. These are high-tech and high-value-added products. Special gases are usually classified into three categories: high-purity or ultra-pure gases, standard calibration gases, and mixed gases with specific compositions.

The industries that are experiencing rapid growth in China include: fire suppression in coal mines, oil extraction, coal gasification and coal liquefaction, glass melting furnaces, cement production kilns, refractory material production kilns, industrial furnaces such as brick kilns, food quick freezing, food controlled atmosphere packaging, beer preservation, optics, fuel in defense industries, production of superconducting materials, electronics, semiconductors, optical fibers production, agriculture, animal husbandry, fishery, wastewater treatment, bleaching pulp, garbage incineration, crushing of used tires, etc. These include environmental protection industries such as waste treatment, meteorology, culture, cultural relics protection, sports, criminal investigation, medical care and cold knives in medical treatment, oxygen inhalation for critically ill patients, hyperbaric oxygen therapy, cryogenic preservation of human organs and tissues, anesthesia technology and oxygen therapy centers.

The industries currently undergoing experimentation in China include: solid nitrogen production, fuel cell production, magnetic material production, ultra-fine processing, natural gas power generation, compressed natural gas vehicles, hydrogen fuel vehicle production, etc.

Acetylene gas suppliers in China are manufacturers of industries that consume large amounts of gas, such as the steel, fertilizer, chemical, glass and fiber industries. These industries all build their own gas production equipment and adopt the business strategy of self-production and self-sale. For some industries that consume less acetylene gas, they mainly rely on purchasing from the market.

Common gas separation methods and principles used in industry

The common acetylene gas suppliers in China include oxygen, nitrogen, argon, carbon dioxide, liquid ammonia, liquid chlorine, acetylene gas, hydrogen, etc. There are many production methods for acetylene gas suppliers in China. The manufacturer of acetylene gas suppliers in Luoyang now briefly introduces some common production methods.

One, Oxygen

The main methods for producing industrial oxygen include air liquefaction and separation distillation (referred to as the air separation method), electrolysis using water, and pressure swing adsorption. The general process for producing oxygen through the air separation method is as follows: absorb air → carbon dioxide absorption tower → compressor → cooler → dryer → refrigeration machine → liquidation separator → oil separator → gas storage tank → oxygen compressor → gas filling. The basic principle is to liquefy the air and then use the different boiling points of various components in the liquidation separator to perform separation and distillation to produce oxygen. The research and development of large-scale oxygen production units have led to continuous reduction in oxygen production energy consumption and the ability to simultaneously produce various air separation products (such as nitrogen, argon, and other inert gases). To facilitate storage and transportation, the liquid oxygen separated by the liquidation separator is pumped into a low-temperature liquid storage tank and then transported by tanker to various cryogenic liquefied gas filling stations. Liquid nitrogen and liquid argon are also stored and transported in this way.

II. Nitrogen

The main production methods of industrial nitrogen include air separation method, pressure swing adsorption method, membrane separation method and combustion method, etc.

The nitrogen produced by the air separation process has high purity and low energy consumption. The nitrogen production technology using pressure swing adsorption is to selectively adsorb the components in the air with 5A carbon molecular sieve, separating oxygen and nitrogen to produce nitrogen. The nitrogen product has a high pressure and low energy consumption, and the product purity can reach the national standard requirements: industrial nitrogen ≥ 98.5%, pure nitrogen ≥ 99.95%.

III. Argon Gas

Argon is the most abundant inert gas in the atmosphere, and its production method mainly involves the air separation process. In the oxygen production process, the fraction with a boiling point of approximately -185.9℃ is separated from the liquefaction separator to obtain liquid argon.

IV. Carbon Dioxide

The main methods for generating carbon dioxide include: by-products from the production of lime, carbon dioxide generated during the fermentation process of brewing, carbon dioxide produced by the combustion of heavy oil, coke, etc., and carbon dioxide as a by-product from the ammonia synthesis industry, etc. Currently, the raw materials for the ammonia synthesis industry are mostly gas, refinery gas, coke oven gas and coal, and their main components are composed of different hydrocarbon ratios and elemental carbon. Under high temperatures, they react with water vapor to form synthetic gas mainly consisting of hydrogen and carbon monoxide, and carbon monoxide is converted into carbon dioxide through a shift reaction. The purification methods for carbon dioxide include: absorption method, pressure swing adsorption method, adsorption distillation method and membrane separation method.

V. Ammonia

The main method for producing ammonia is the direct synthesis method. The ammonia production process flow is as follows: Air and water vapor are blown into the red-hot coke in the water gas generator. This results in a mixture of nitrogen and hydrogen. Then, through processes such as washing, heat exchange, condensation of carbon dioxide, and absorption of carbon dioxide, the raw gas is prepared. The refined mixture gas is sent through a filter, cooler, ammonia separator, and heater to the synthesis reactor, where liquid ammonia is separated out by the separator.

VI. Chlorine Gas

The main method for obtaining chlorine gas in industry is through electrolysis of saturated brine. Chlorine gas with higher purity is obtained when electrolyzing molten chlorides to prepare active metals. Using air or oxygen can catalyze the conversion of the by-product hydrogen chloride in the organic synthesis industry into chlorine gas through oxidation.

VII. Acetylene Gas

The main methods for producing acetylene include the calcium carbide hydrolysis method, the high-temperature combustion cracking of methane or hydrocarbons, and the plasma cracking method. The calcium carbide hydrolysis method has a shorter process flow, high product purity, but higher energy consumption. Most dissolved acetylene production adopts this method. According to the solubility characteristics of acetylene, the acetylene gas is compressed and filled into the solvent, and stored in steel cylinders filled with porous fillers. Acetone, as an excellent solvent, is adsorbed by the fillers in the steel cylinders for dissolving and releasing acetylene. Its function is to increase the effective volume of the steel cylinders and reduce the explosive performance of acetylene gas. The widespread use of dissolved acetylene cylinders is convenient for use and improves work efficiency, improves the environment, saves calcium carbide consumption, but it is necessary to ensure that the porous fillers in the steel cylinders are not damaged or contaminated, and the filling amount of acetone solvent should meet the requirements for filling acetylene gas, so as to ensure safety and reliability. The filling process of dissolved acetylene production is: After the crude acetylene gas is generated, it undergoes chemical purification to remove impurities such as sulfur and phosphorus, and then is compressed and dried, and filled into the dissolved acetylene cylinders.

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