As the global oil resources, the relative shortage of coal will replace oil as a major chemical raw materials, China must vigorously develop new coal chemical industry. Plasma pyrolysis of coal can be obtained step acetylene, then the downstream production of chemical products, efficient and clean conversion of coal to achieve a new way. This article first coal volatile balance system and the plasma conditions of the reaction of carbon and hydrogen thermodynamic results showed that: coal at temperatures less than 4000K in hydrogen plasma pyrolysis, mainly from acetylene addition to CO outside the volatile acetylene on the utilization of low carbon coal, energy consumption per unit mass higher than acetylene. In order to improve the carbon efficiency of acetylene, must raise the temperature of reaction system to more than 4000K. Thermodynamic equilibrium through the whole system of coal, this paper explores the increased utilization of coal acetylene carbon way to determine the plasma Acetylene Production Optimization of reaction conditions: the initial reaction temperature in the sublimation point of graphite carbon
thomas sabo onlineshop(4000K or so) or more, cooling system before the start of H / C ratio of 6, of the total system pressure of 0.5MPa, and the necessary temperature in the 3460K take appropriate measures on the system to quench quench. This article explores further reduce energy consumption per unit mass of acetylene than the way - into the reaction system for reducing the initial energy and then use high-temperature gas quenching process of the energy system is proposed to CBM for the coolant system of the plasma pyrolysis of coal Acetylene new program: first to the initial H / C ratio (by Baldor coal, for example, net CO consumption of carbon) is 2.25 more than the system temperature to 4000K, and then joined the H_2 cooling and conditioning system in the 3460K when the H / C ratio 6, the total pressure of 0.5MPa, and the system just does not contain solid carbon; then joined the CBM methane as a quenching agent to make rapid cooling system, hybrid system temperature reaches about 2000K; finally with water or liquid hydrocarbon quench temperature of the mixed system to 500K less.
schmuck The program of carbon from acetylene on the utilization of coal up to 94.9%, the ratio of energy consumption per unit mass of acetylene as 6.38kWh/kg-C_2H_2, in the economic and environmental benefits relative to other options for acetylene has obvious advantage.
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