High-temperature gas-cooled reactor helium and indirect cyclic hydrogen production coupled power generation system and method

Abstract

The invention discloses a high-temperature gas-cooled reactor helium and indirect cyclic hydrogen production coupled power generation system and method. The system comprises a nuclear power generation system, a hydrogen production system, a high-pressure helium reheater, a methane delivery pipeline, a water supply pipeline, a water vapor pipeline and a hydrogen delivery pipeline. A secondary-side helium outlet of a helium-helium heat exchanger of the nuclear power generation system is connected with a helium inlet of a conversion reactor of the hydrogen production system. A helium outlet of the conversion reactor is connected with a helium inlet of the helium reheater. A helium outlet of the helium reheater is connected with an inlet of a helium turbine of the nuclear power generation system. A converted gas outlet of the conversion reactor is connected with a converted gas inlet of the helium reheater. A converted gas outlet of the helium reheater is connected with a converted gas inlet of a low-pressure water vapor generator of the hydrogen production system. The high-temperature gas-cooled reactor helium and indirect cyclic hydrogen production coupled power generation system can couple the nuclear power generation process and the hydrogen production process, and the hydrogen-power coproduction manner that hydrogen is produced first and power is generated second by the same helium flow is realized. The high-temperature gas-cooled reactor helium and indirect cyclic hydrogen production coupled power generation system and method have the characteristics of gradient utilization of energy, high thermal efficiency and the like and have good economic benefits and application prospects.

Description

technical field [0001] The invention belongs to the technical field of nuclear energy applications, and in particular relates to a high-temperature gas-cooled reactor helium indirect cycle hydrogen production coupling power generation system and a method thereof. Background technique [0002] As an important industrial raw material and the cleanest energy, hydrogen is widely used in various fields of national economy. Today's industrial hydrogen production method in my country is mainly fossil fuel hydrogen production. Among them, the application of natural gas steam conversion hydrogen production is the most common, and the cost is the lowest. However, the hydrogen production process still has the problem of high energy consumption. At present, the temperature of the reformed gas from the reformer in the hydrogen production process is generally between 750 and 800°C. The reformed gas enters the low-pressure steam generator to heat the feed water to generate saturated steam ...

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Problems solved by technology

At present, the relatively mature and reliable thermodynamic cycle of high temperature gas-cooled reactor is the indirect cycle of helium gas turbine. After the process heat is provided for the hydrogen production process, the temperature of the helium gas coming out of the reformer is already at a relatively low temperature level, about 350-400°C, which can no longer meet the requirements of the intake parameters of the helium turbine, so high-temperature air cooling The same high-temperature helium in the stack can only be used for hydrogen production alone or for helium cycle power generation alone. In this regard, the complete coupling of the nuclear power plant and the hydrogen production process has not really been realized.

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