Study on hydrogen production by microwave-assisted steam gasification of Eupatorium adenophorum

Abstract

Biomass has become one of the important raw materials for hydrogen production technology, which is realized by gasification and pyrolysis. Eupatorium adenophorum has 78.69 % volatile and 6.51 % hydrogen, which is a good material for producing hydrogen-rich gas. In this paper, hydrogen-rich gas production by microwave gasification of Eupatorium adenophorum is investigated. Under the optimized conditions of gasification temperature of 800 °C, gasification time of 40 min, and steam flow rate of 0.5 g / min, a solid yield of 2.38%, a liquid yield of 41.77%, and a gas yield of 55.87% were obtained. The product yields and contents were compared between the different methods. The hydrogen content of the gas product from microwave pyrolysis gasification was 47.62%, which was more than four times higher than that of the conventional pyrolysis method for hydrogen production and 30% higher than that of the conventional gasification method for hydrogen production. The calorific value of the gas mixture obtained from microwave pyrolysis gasification reaches 11.31 MJ/Nm³, which is higher than the calorific value of industrially produced water gas, and can be used as a gas fuel.. The microwave-assisted gasification technology provides a new idea for the transformation and utilization of Eupatorium adenophorum.