Explosion Law of Purge Gas and Its Application in Coal Chemical Industry

ABSTRACT

Purge gas is a kind of industrial waste gas, 80% of which is H₂, CO, and CH₄. Generally, the common treatment method is to combust it and then empty, which not only pollutes the environment but also wastes massive resources. Therefore, this paper combines the coal chemical purge gas treatment and emission status quo, proposing a new approach of purge gas explosion utilization in coal chemical. The main objective of the study is to determine the ratio of purge gas at laboratory, based on on-site sampling of purge gas in coal chemical plants. And then use the 20 L spherical explosion vessel for explosion experiments. When P_Max>0.3MPa, the utilization effect is satisfactory and the impulse of explosion can reach a more useable value, which provides data support for enterprises to choose the best ratio of reuse of the gas. Finally, a concept of the application of purge gas in production is developed, which is of significance to improve the utilization rate of purge gas in coal chemical and reduce the energy consumption of enterprises.

KEYWORDS:

• Coal chemical industry
• purge gas utilization technology
• gas mixture explosion
• flammable gas power generation

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was financially supported by National Natural Science Foundation of China [51974322], the opening project of State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology) [<#AWARD-ID;>KFJJ21-05M</#AWARD-ID;>], the Open Fund of Key Laboratory of Mine Disaster Prevention and Control in Hebei Province, North China Institute of Science and Technology [KJZH2017K01], Leading Talents in Science and Technology Innovation under the Ten Thousands Program [W02020049], International Clean Energy Talent Program [201902720011], the Fundamental Research Funds for the Central Universities [2009KZ03], Natural Science Foundation of Xinjiang Uygur Autonomous Region [2019D01A33].