Research and development and simulation analysis of hydrogen production reactor for methanol reforming
With the increasing consumption of fossil fuels such as oil and environmental pollution,hydro-gen energy as a clean energy with high caloric value has been widely concerned.At present,there are still problems in the storage and transportation of hydrogen,and methanol,which is convenient for trans-portation and preservation,can solve this problem.Methanol steam reforming has the advantages of high hydrogen production,less intermediate product and lower reaction temperature.In order to solve this problem,a methanol reforming hydrogen production reactor was designed and analyzed,and a series of studies were carried out on the internal heat and mass transfer problem,and a three-dimensional numeri-cal calculation model of the reactor was established.Through simulation,it is found that with the increase of distance,the flow rate in the reactor is getting faster and faster,the temperature is getting higher and higher,and the reaction rate is getting larger and larger.At the same time,because the tem-perature distribution is relatively uneven,the reaction rate in the center is smaller than that at the edge.Both experimental and simulation results show that under the same external heat source temperature,with the increase of inlet flow rate,outlet reforming gas also increases,and the conversion rate becomes lower and lower.Under the same inlet flow,as the temperature of the external heat source increases,the outlet reforming gas volume also increases,and the conversion rate is higher.In addition,under the con-ditions of an external temperature of 533 K,an inlet temperature of 293 K,and an inlet methanol aque-ous solution flow rate of 0.024 m/s,the hydrogen production rate is 108 mL/min,which can meet the hydrogen consumption of 22.65 W fuel cells.
methanol steam reformingheat and mass transfer modelinghydrogen productionreactor
万方数据
