High Pressure Entrained Flow Gasification for Second Generation Biofuel Process

The complete Bioliq Process (Biomass to Liquid Karlsruhe) comprises four stages. In Stage I, the dry residual biomass which occurs widespread regionally and possesses low energy content is converted

decentralized into a substance similar to crude oil of high energy density by fast pyrolysis. The so-called Bioliq Syncrude can be transported cost-effectively over long distances and is processed further centrally. In the second process stage, a high-pressure entrained flow gasifier converts the Bioliq Syncrude to a tar-free syngas at temperatures above 1,200 degrees centigrade and pressures of up to 80 bar. The synthesis gas is mainly composed of carbon monoxide and hydrogen.

In this Stage II, the high temperatures, high pressure and the reactive products make exacting demands on the process, the instrumentation and the safety technology of the plant. The downstream hot-gas cleaning unit – Stage III – has the function to separate impurities like particulate matter, chlorine and nitrogen compounds from the syngas. In the fourth and last process step, the gas molecules are selectively composed to obtain customized motor fuels.