增压流化床生物质甲烷化反应器的设计与运行

Design and Operation of a Biomass Methanation Reactor using Pressurized Fluidized Bed Technology

生物质经气化得到的产品气中富含CO和H2,可用于甲烷化过程进而获得代用天然气(SNG)。流化床技术由于其在化学反应中特殊的优点而得到广泛应用,为此设计并建造了增压流化床反应器来研究生物质甲烷化过程的影响因素。整个增压流化床甲烷化反应器系统的设计包括主反应器和附属设备两大部分,流化床主要尺寸的确定以及附属设备(包括冷却系统、密封系统、进气和排气处理系统等)的用途都做了详细介绍。冷态试验的结果表明,反应器可在给定的条件下正常运转,从而为后续的试验研究奠定了基础。

The product gas obtained from biomass gasification is full of CO and H2, and can be used in the methanation processes to obtain the synthetic natural gas （SNG）. The fluidized bed technology is widely used in chemical reactions due to its special properties suitable for these reactions. A pressurized fluidized bed reactor was designed and constructed to investigate the influences on the biomass methanation process. The whole pressurized fluidized bed system consisted of the main reactor and the auxiliary devices. The main size of the bed and the uses of the auxiliary devices including the cooling system, sealing system, in-gas treatment and off-gas treatment systems were discussed. The cold mode experiments showed that the reactor could run normally at the desired conditions, which laid a good foundation for the future investigations.