Medium-low temperature linear solar hydrogen production electric heating simulation experiment platform and experiment method

Abstract

The invention discloses a medium-low temperature linear solar hydrogen production electric heating simulation experiment platform which comprises a reactant feeding system, an electric heating evaporation system, a catalytic reduction system, a non-uniform heat source simulation heating system, a product cooling and separation system, a product detection and analysis system and a data acquisition and control system; the output end of the reactant feeding system is connected with the input end of the electric heating evaporation system through a pipeline, the output end of the electric heating evaporation system is respectively connected with the catalytic reduction system and the bypass pipeline through a first three-way valve, and the bypass pipeline is connected with the product cooling and separating system and an exhaust port through a second three-way valve; the product cooling and separating system is connected with a product detecting and analyzing system; the coupling mechanism of the heat transfer characteristic and the thermochemical reaction performance of the solar methanol reforming hydrogen production process under various non-uniform heat flow conditions can be researched indoors.

Description

technical field [0001] The invention belongs to the technical field of solar thermochemical utilization, and specifically relates to a medium-low temperature linear solar hydrogen production electrothermal simulation experiment platform and an experiment method. Background technique [0002] After the concept of hydrogen economy was put forward, many technical routes for hydrogen production have been developed, such as solar pyrolysis of water, solar thermochemical cycle, and solar reforming, cracking and gasification of fossil fuels. Among them, the combination of solar concentrating heat collection system and fuel reforming hydrogen production is an effective way to solve the current problem of clean fuel supply. At present, fuels that can be used for large-scale reforming to produce hydrogen include methane, methanol, petroleum, and biomass. Theoretical and experimental studies on the fuel reforming process based on the trough linear solar concentrating heat collection s...

AI Technical Summary

Problems solved by technology

For the linear trough solar thermal absorber system, in addition to the fluctuation of solar illumination and meteorological environmental conditions, most of the incident solar radiation in the system is focused to the lower part of the thermal absorber through the trough parabolic reflector, only A small part of solar radiation is projected directly to the upper part of the heat absorber, which makes the heat flow distribution of solar radiation in the circumferential direction of the heat absorber extremely uneven, which in turn leads to extremely uneven temperature distribution on the heat absorber tube wall , the temperature may be too high in some places, which may cause over-temperature sintering of the catalyst and performance degradation, which in turn will further deteriorate the thermal energy utilization process and aggravate the influence of temperature distribution inhomogeneity, which will bring great challenges to the long-term stable operation of the equipment

[0004] Although there are some experimental platforms for linear concentrating solar thermochemical hydrogen production, the systems are relatively simple, highly dependent on the environment and difficult to implement.

At present, there are few experimental studies on the indoor simulation of the non-uniform energy flow characteristics of solar radiation concentrating and heat collection, and combining it with the hydrogen production process of methanol reforming under different working conditions

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