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推荐煤气化发电与电解水制氢联产干冰的工艺路线。该工艺以煤炭、空气和水为原料,干粉煤纯氧高温(1700℃)气化全部转化成合成气(CO+H_2),用脱硫后的纯合成气CO含63%以上的部分合成气作电解水制氢的循环介质,可使制氢的电耗由4.76k W·h/m~3 H_2(标准状态)降到1.67k W·h/m3 H_2(标准状态)。同时CO在水电解阳极同水中的氧变换成CO_2(或CO_2+O_2)。阳极排出的CO_2浓度可调节成79%CO_2+21%O_2,用于燃气轮机发电助燃剂,排出的烟气为高温纯CO_2,进入废锅产高压蒸汽用于发电后经冷却节流膨胀成雪花状固体CO_2干冰,可用作植物肥料。水电解阴极取得纯H_2产品,可用于合成气中配H_2,用于合成甲醇。于是电解水槽成为用电能分解水和合成气用于发电和生产化工产品原料气的转化调节核心装置,其调整负荷控制在40%以内,成为调节电力与化工产品生产的经济可行的创新技术。
Recommended gasification power generation and electrolysis of water to produce dry ice process route. The process uses coal, air and water as raw materials to convert all the pure pulverized coal into high temperature (1700 ℃) and synthesis gas (CO + H_2). The pure syngas after desulfurization contains more than 63% of the syngas The cycle medium for hydrogen production from electrolysis of water reduces the electricity consumption for hydrogen production from 4.76 kWh / m to 3 H 2 (standard state) to 1.67 kWh / m 3 H 2 (standard state). At the same time CO in water electrolysis anode water oxygen into CO_2 (or CO_2 + O_2). The concentration of CO_2 discharged from the anode can be adjusted to 79% CO_2 + 21% O_2, which is used for combustion power generation of gas turbines. The discharged flue gas is high-temperature pure CO_2 and enters the waste boiler to produce high-pressure steam for throttling and expanding into snowflakes Solid CO_2 dry ice, can be used as plant fertilizer. Water electrolysis cathode to obtain pure H 2 products, can be used for syngas with H_2, for the synthesis of methanol. As a result, the electrolysis tank has become the core unit of electricity conversion and regulation for electricity generation and production of raw material gas for chemical products by decomposing water and syngas with electricity, and the adjustment load is controlled within 40%, becoming an economically feasible and innovative technology for regulating the production of electric power and chemical products.