Combined heat, electricity and hydrogen production system with ultrahigh-temperature gas cooled reactor coupled with iodine-sulfur circulation

Abstract

The invention discloses an ultrahigh-temperature gas cooled reactor coupled iodine-sulfur circulation thermoelectric hydrogen cogeneration system which comprises an iodine-sulfur circulation hydrogen production module, a process heat extraction module, a power generation loop, an ultrahigh-temperature gas cooled reactor and an intermediate heat exchanger, the power generation loop comprises a steam generator, a high-pressure cylinder, an intermediate-pressure cylinder and a low-pressure cylinder, the high-pressure cylinder exhausts steam to supply heat to a hydroiodic acid decomposition preheater, and the intermediate-pressure cylinder exhausts steam to supply heat to a hydroiodic acid decomposition preheater; and steam extracted by the low-pressure cylinder supplies heat to the sulfuric acid purification tower, the sulfuric acid concentration tower, the hydriodic acid purification tower and the hydriodic acid rectification tower. High-temperature helium at an outlet of the ultrahigh-temperature gas cooled reactor transfers heat to secondary side helium through the intermediate heat exchanger, and the secondary side helium supplies heat to the sulfuric acid decomposer, the hydriodic acid decomposer and the steam generator. The ultrahigh-temperature gas cooled reactor and the iodine-sulfur cycle are coupled in the combined heat, power and hydrogen production system, heat, power and hydrogen can be produced at the same time, gradient utilization of energy of the ultrahigh-temperature gas cooled reactor is achieved, multi-level energy requirements are met, the overall energy utilization rate of the system is increased, and a basis is provided for design of a process heat utilization system of the ultrahigh-temperature gas cooled reactor.

Description

Technical field [0001] The present invention relates to nuclear reactor engineering and the field of process heat utilization technology, in particular to an ultra-high temperature gas-cooled reactor coupled with iodine-sulfur cycle of thermoelectric hydrogen cogeneration system. Background [0002] Hydrogen is a clean energy carrier with high calorific value and is expected to play an increasingly important role in future energy supply. The widespread application of hydrogen can not only help China achieve the goal of carbon peaking and carbon neutrality, but also help alleviate the global greenhouse effect and energy crisis. To achieve the widespread use of hydrogen, it is necessary to seek clean and efficient large-scale hydrogen production methods. Fossil fuel hydrogen production not only consumes fossil energy, but also emits a large number of greenhouse gases and pollutants, and electrolyzed water to produce hydrogen is less efficient and costly. In contrast, the use of nuc...

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Problems solved by technology

[0004] For the above-mentioned technologies, hydrogen production from fossil fuels will not only consume fossil energy, but also emit a large amount of greenhouse gases and pollutants. Hydrogen production from electrolyzed water is less efficient and costly High technical problems, the present invention proposes a cogeneration system of heat, electricity and hydrogen coupled with an iodine-sulfur cycle in an ultra-high temperature gas-cooled reactor

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