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

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.