Abstract
Aiming at the problems such as low CBM utilization rate caused by low concentration CBM with methane content less than 8% extracted from a small coal mine in Hancheng mining area, Shaanxi Province, and serious environmental pollution caused by coal-fired hot blast stove for heating, the heat storage and oxidation heating technology of ultra-low concentration gas in small coal mine was studied by combining field investigation and heat balance calculation, and ultra-low concentration gas regenerative oxidation was obtained through thermal oxidation technology scheme. This technology replaces the coal-fired hot blast stove, realizes “coal and CBM mining and sharing” in the coal mine, and constructs a virtuous cycle development of “promoting drainage by using and promoting safety by drainage”. The research shows that: the scheme improves the utilization rate of CBM in the mining area, cancels the consumption of coal combustion, and can use 2.59 million Nm3 of pure CBM every year, generating 1.95 million yuan of economic benefits. And the emissions reduction of CO2 equivalent is 36000 tons. The benefits of safety, economy and environmental protection are remarkable. This technology is especially suitable for the utilization of ultra-low concentration CBM whose concentration is less than 8%, which has practical significance to improve the CBM utilization rate and promote the realization of the goal of “zero emission”.
Highlights
Using low concentration gas thermal storage oxidation technology to replace coal-fired hot blast stove for shaft heating and office building heating can effectively solve the problem of air pollutants exceeding the standard of current coal-fired hot blast stove, reduce the emission of air pollutants, avoid the discharge of waste water and solid waste[1,2,3], with good energy saving and environmental protection benefits, and make full use of the discharged low concentration gas and save coal
For the utilization of coalbed methane, we should select the corresponding utilization technology according to local conditions, pay attention to the connection and complementarity of various utilization technologies, and carry out the optimization research of relevant key technologies, so as to realize the comprehensive effect of cascade utilization of low concentration drainage gas
It is suggested that the scheme of low concentration gas thermal storage and oxidation thermal energy utilization system should be adopted to replace the original coal-fired hot blast stove
Summary
Using low concentration gas thermal storage oxidation technology to replace coal-fired hot blast stove for shaft heating and office building heating can effectively solve the problem of air pollutants exceeding the standard of current coal-fired hot blast stove, reduce the emission of air pollutants, avoid the discharge of waste water and solid waste[1,2,3], with good energy saving and environmental protection benefits, and make full use of the discharged low concentration gas and save coal. It can obtain the subsidy for the use of gas, which can bring economic benefits to the mine[4,5]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
