The difference between coal gas and gas

According to the gas composition, natural gas can be divided into lean gas (dry gas) and rich gas (wet gas). The lean gas mainly becomes methane (containing 90%-100%). Moisture often coexists with crude oil. In addition to being mainly methane, this natural gas also contains small amounts of ethane, propane, and butane. When pressure is increased, ethane, propane and butane can become liquid, also known as liquefied petroleum gas. Coal gas is a combustible gas obtained by dry distillation or gasification of solid fuels such as coal, coke, and semi-coke and liquid fuels such as fuel oil. Including coke oven gas and other gases. Catalytic dry gas refers to a collection of C1 and C2 produced during the catalytic cracking process, as well as CO, CO2 or residual air produced by burning, etc. Refinery gas is a gaseous hydrocarbon by-product of a petroleum refinery. It mainly comes from processes such as crude oil distillation, catalytic cracking, thermal cracking, petroleum coking, hydrocracking, catalytic reforming, and hydrorefining. The main components are alkanes, alkenes below carbon four (C4), hydrogen and a small amount of nitrogen, carbon dioxide and other gases. Gas: The main component is alkanes, of which methane accounts for the majority, and there are small amounts of ethane, propane and butane. In addition, it generally contains hydrogen sulfide, carbon dioxide, nitrogen and water, as well as trace amounts of inert gases such as helium and argon. This post was last edited by xssn2005 on 2009-2-7 10:13 ]

Tell me what you know. The calorific value and pressure of coal gas are relatively low, so it generally needs to be pressurized during use. The calorific value of gas gas and refinery gas is not high. At the same time, because it is gas produced by refining, there are many particulate impurities in the fuel. When using it, a filter must be added, otherwise the nozzle will be easily blocked.

Gas is methane (CH4), commonly known as non-toxic and relatively clean gas. Coal gas is also called water. Gas is a mixture of hydrogen and carbon monoxide. It is toxic and relatively clean gas. The common denominator is that it can burn.

Folks do not have a very clear definition of coal gas, and coal gas and natural gas are often confused. In fact, real coal gas refers to carbon monoxide (the extracted coal ore is sent to the coking plant, and the components in the coal mine are decomposed through chemical reactions by isolating oxygen and increasing heat (retorting). The products include coke (raw material for making plastics) and carbon monoxide (burning to provide internal energy)). In the coal chemical industry, coal gas refers to the product of coal gasification, including CO, CO2, H2 and other components. The component of natural gas is methane. There are natural gas fields in nature. The extracted natural gas can be directly burned for heating without further processing. In the past, China used more coal gas. However, because coal gas is highly toxic, has low calorific value (heat provided per unit volume (mass)), and produces large amounts of waste (carbon dioxide) when burned, it has gradually been replaced by natural gas, which is non-toxic, has high calorific value, and is relatively clean.