Research And Design Of Reaction Kettle System For Aluminum-water Reaction Hydrogen Production Device

With the rapid development of new energy,Secondary energy hydrogen energy is increasingly attracting people’s attention.Compared with other traditional energy sources,hydrogen energy has the advantages of high density,cleanness and high efficiency.At present,the implementation strategy of hydrogen energy has become one of the important directions in China.At present,there are many methods for producing hydrogen energy in the market,and the aluminum-water reaction for hydrogen production is considered as one of the most potential methods.For the research of hydrogen production by aluminum-water reaction,on the one hand,it is the research of materials,on the other hand,it is the research of hydrogen production device by aluminum-water reaction.This study mainly focused on the design and research of the reactor system of aluminum-water reaction hydrogen production plant.Firstly,the feeding mechanism in the reaction kettle system was designed.Combined with the technological requirements of hydrogen production by aluminum-water reaction,that was,chemical reaction raw materials need to be stored in vacuum and can be automatically and continuously fed,the screw conveyor was selected as the feeding mechanism in the reaction kettle system,and the detailed parameters and structure design of the screw conveyor were carried out according to the actual working conditions.Secondly,according to the design of the main reactor for hydrogen production by aluminum-water reaction,the appropriate reactor type was selected by analyzing the process of hydrogen production by aluminum-water reaction,and the structural parts of the reactor were designed and calculated in detail in combination with the reactor design process.Then,the heat exchange demand and heat exchange environment in the reaction kettle were analyzed,and the heat exchange device in the reaction kettle-the snake-tube heat exchanger was selected.Based on the heat release power of aluminum-water chemical reaction,the required heat exchange area was calculated,and the snake-tube heat exchanger with doublelayer snake-tube structure was designed on the basis of considering the reaction kettle space and heat exchange efficiency.Thirdly,with the help of ANSYS,the finite element calculation and analysis of the reaction kettle and the snake tube heat exchanger were carried out.Under three different working conditions,the stress distribution of the structure was calculated,and the dangerous position of the structure was analyzed.According to the stress linearization method in JB/T4732-1995(2005)Steel Pressure Vessel-Analysis and Design Standard,the dangerous position of the structure was linearized to ensure the safety and rationality of the structure design.Finally,with the help of Fluent software,the heat exchange fluid of the snake-tube heat exchanger was analyzed.On the basis of simplifying the chemical reaction heat source,the temperature of the heat source fluid domain and the pressure,flow rate and temperature of the internal flow field of the snake-tube heat exchanger were explored under different inlet flow rates,and the heat exchange feasibility of the snake-tube heat exchanger was verified.