A method for producing hydrogen from biomass. For this purpose, the biomass is fed into a fluidized bed reactor, in which the biomass is converted into a flow of products. Solid particles are separated in at least one cyclone. Further solid particles and hydrocarbons are separated in a venturi scrubber. A flow of products is generated in the biodiesel scrubbing, which is fed into a water scrubbing and then to a cooling unit for separation. A flow of products is generated in the high-purification of gas, which is fed into a water gas conversion and CO.sub.2 removal. A flow of products is generated in the gas separation.

The present invention discloses oxygen enriched air blown pressurized fluidized bed pilot scale refractory lined gasifier of 1.5 TPD feed capacity to gasify coal, biomass, washery rejects, and their blends in any proportion in the actual atmosphere of commercial gasifier. The system is equipped in such a way that it can be operated in air/oxygen/oxygen enriched air/steam as well as their mixture in any proportion as per process requirement. The present invention discloses gasifier having feed rate carrying capacity up to 60 kg/hour, maximum operating temperature up to 1050 C. and pressure up to 10 kg/cm2. The facility consists different sections for gaseous and solid feeding, gasification, ash withdrawal, and gas Cooling & Cleaning. Besides gasification performance analysis, present invention is also discloses the study of agglomeration characteristics, entrainment and other fluidized bed gasification related parameters.

The disclosure relates to the technical field of gas mixing, and particularly relates to a quench device and a mixing method for improving mixing effect of quench gas and synthesis gas. The quench device includes a plurality of quench gas ports installed on a dry pulverized coal gasifier body and a guide wheel installed in the quench gas ports. A cross section of the dry pulverized coal gasifier body is a first imaginary circle, and the plurality of quench air ports are arranged along a circumference of the first imaginary circle. A number of the quench air ports is positive even number, and every two quench air ports form a rotary hedging group. Two quench air ports of a same rotating hedging group are arranged on a circumference of a same first imaginary circle and symmetrically arranged around a center of the first imaginary circle.