Biomass quick cracked oil water vapour catforming hydrogen production method

Abstract

The invention discloses a method by adopting biomass fast pyrolysis oil which carries out two sections of fixed bed reactors and water vapor catalytic reforming for producing hydrogen; the two sections of fixed bed reactors are connected in series, the natural dolomite which is relatively cheap and easily available is taken as catalyst in water vapor reforming reaction at the first section of fixed bed reactor, while the second fixed bed reactor adopts Ni / Mgo as catalyst to further improve the purity and yield of the target product gas. Comparatively high temperature and comparatively high S / C (more than 12) are extremely important for the effective transformation of the biomass pyrolysis oil in the first fixed bed reactor. However, for any temperature point, low mass space velocity can facilitate the increasing of the yield of any gas product and the total gas phase transformation ratio of the biomass oil is increased accordingly. The Ni / MgO catalyst is extremely effective in the purification stage, when S / CH4 is not less than 2 and the temperature is not lower than 800 DEG C, the transformation ratio of methane can reach 100 %. Low mass space velocity can facilitate effective transformation of methane; when mass space velocity is not higher than 3600h<-1>, the potential hydrogen yield can reach 81.1%.

Description

technical field [0001] The invention relates to a method for producing hydrogen from biomass rapid cracking oil, in particular to producing hydrogen-rich gas products by using biomass rapid cracking oil as a raw material and undergoing steam catalytic reforming in two-stage fixed-bed reactors. Background technique [0002] Biomass energy is a renewable clean energy and related chemical products produced by using organic waste such as agriculture and forestry and planting energy plants on marginal land as raw materials, and using crop starch and oil as adjustments. It is an environmentally friendly and renewable energy source, such as various fuel ethanol, biodiesel and biogas. [0003] Biomass hydrogen production is one of the current research hotspots in the field of hydrogen energy in the world, but most of the research is on biomass supercritical gasification hydrogen production. While CO is added to the gasification process 2 The research on hydrogen production from bi...

AI Technical Summary

Problems solved by technology

The use of biomass to produce hydrogen can achieve zero carbon dioxide emissions. Since biomass pyrolysis oil represents a single raw material with higher energy density, the use of biomass oil to produce hydrogen has attracted attention from various parties in recent years. Biomass oil can Hydrogen is obtained through partial oxidation and carbon dioxide reforming, but this process is still largely dependent on non-renewable fossil fuels, so it is not a long-term route to hydrogen energy