Why must waste gas be purified?
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Why must waste gas be purified? The gas produced during coal coking in the carbonization chamber (raw gas) contains a large amount of various chemical substances; among them, tar and naphthalene tend to condense and form frost, which can block the pipes and interfere with the transportation of the gas. 2. In addition, waste gas also contains toxic substances such as sulfides and cyanides, and it is corrosive to gas equipment. Therefore, this type of gas cannot be used as a gaseous fuel without being processed, or in other words, without being refined. The purpose of gas purification is to remove tar mist, ammonia, benzene compounds, light oils, sulfides, cyanides, naphthalene, and liquids present in the raw gas (i.e., condensed ammonia water), thereby obtaining refined coke oven gas that consists mainly of non-condensable gases such as hydrogen and methane.
We possess patented equipment for the purification of coke oven gas to remove tar mist/tar dust – the demisting dust collector. This device uses a special array of plates together with a fiber bed to remove dust droplets of various particle sizes; it enables the outlet concentration of tar and dust to remain below 5 mg/m3. It operates with no need for maintenance, which significantly reduces the costs associated with the adsorption and replacement of traditional carbon/coke towers. It also extends the continuous operation time of downstream devices such as compressors. This technology has been successfully applied in dozens of cases across the industry. If you need any improvements, please contact me, Mr. Chen at 13228233516
The purification of raw gas enables the reduction of dust, nitrogen oxides, sulfur dioxide, and total non-methane hydrocarbons resulting from the combustion of gas sent back to the furnace; furthermore, it provides clean gas for subsequent processing of the raw gas