Coal quality, clean and efficient transformation, innovation chain takes shape

Sinochem News.

The review expert group headed by Professor Li Wenhong of the School of Chemical Engineering of Northwestern University also believes that Dongxinyuan uses the full-size low-rank coal pyrolysis technology as the leader, and uses the product hydrogen and coal tar to produce clean fuel oil technology, which has high energy efficiency and carbon dioxide.

Song Ruchang, Secretary of the Party Committee and Chairman of Dongxinyuan Company, introduced that the company relies on independent technical strength, focusing on the clean and efficient use of coal, using coal pyrolysis-comprehensive utilization of raw gas-coal tar deep processing-waste gas, solid waste power generation circular economy industrial chain For the idea, after more than 5 years of research and development, more than 3,000 technological transformations have been implemented, and through the practical application and optimization of integration in the annual production of 1.

The main innovations of the project include: optimizing the structure of the traditional pyrolysis furnace, innovating mass and heat transfer technology, expanding the scope of application of raw coal, and increasing the production capacity of a single furnace by about 30%; the developed furnace top discharge valve sealing technology has achieved The positive pressure operation, anaerobic gas and automatic control have effectively solved safety and environmental protection issues; the developed closed drying-flue gas recovery combined process realizes the effective recovery and comprehensive utilization of exhaust gas, and improves the quality of blue charcoal; tar residue clarification Equipment and gas purification technology improve the tar yield

In addition, Dongxinyuan also realized the industrial application of hydrogen production without conversion from raw gas for the first time in China.