Thermal power plant peak regulating system based on water-electrolysis hydrogen production

Abstract

The invention discloses a thermal power plant peak regulating system based on water-electrolysis hydrogen production. The system comprises a coal-fired boiler, a hydrogen production unit arranged in the upstream position of the process of the coal-fired boiler and a flue gas recovery unit arranged in the downstream position of the process of the coal-fired boiler; the hydrogen production unit comprises multiple hydrogen storage tanks; the multiple hydrogen storage tanks are connected in parallel and communicate with water-electrolysis hydrogen production equipment through pipelines to receiveand store hydrogen; the hydrogen production unit communicates with a buffer tank through a pipeline; the buffer tank is located in the downstream position of the process of the hydrogen storage tanks;a valve group is mounted on the hydrogen production unit; and the communication states of the hydrogen storage tanks are switched by the aid of the valve group. According to the system, the multiplehydrogen storage tanks and the buffer tank communicating with the multiple hydrogen storage tanks through series connection are arranged, the multiple hydrogen storage tanks can realize the effect that multiple hydrogen storage tanks are opened while multiple hydrogen storage tanks are standby, and thus later overhauling is facilitated; and stabilized-pressure delivery of hydrogen output by the opened hydrogen storage tanks can be further performed by the buffer tank, so that the safety is improved.

Description

technical field [0001] The invention relates to the technical field of thermal power generation peak regulation systems, in particular to a thermal power plant peak regulation system based on electrolysis of water to produce hydrogen. Background technique [0002] In thermal power generation, the electricity load is uneven. During peak electricity consumption, the grid is often overloaded. At this time, generator sets outside normal operation need to be put into use to meet the demand. These generating units are called peak shaving units. Because it is used to adjust the peak of electricity consumption, it is called a peak-shaving unit. The requirements of the peak shaving unit are that it is convenient and quick to start and stop, and the synchronization adjustment when connecting to the grid is easy. Generally, peak shaving units include gas turbine units and pumped storage units. [0003] The traditional peak shaving method requires more peak shaving units, which is ...

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Problems solved by technology

[0003] The traditional peak-shaving method needs to be equipped with more peak-shaving units, which is inconvenient to use and adjust, and consumes a certain amount of energy, resulting in low peak-shaving revenue, and the supply mode of the traditional power station with a single energy carrier is relatively low in competitiveness and economic benefits , and the boiler needs to be fed with oil to stabilize the combustion during combustion, and the pollutant discharge is serious, which cannot meet the needs of use well

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