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Solar gradient phase change heat storage indirect steam assisted carbon dioxide capture system

A phase change heat storage and carbon dioxide technology, which is applied in solar thermal power generation, solar thermal devices, and mechanical power generation with solar energy, etc. The effect of thermal efficiency

Inactive Publication Date: 2015-05-13
NINGBO RUIXIN ENERGY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] As a relatively mature carbon dioxide removal process, the amine chemical capture system has broad market prospects in capturing carbon dioxide from power plant flue gas, but the high energy consumption required for desorption and regeneration has become one of the main bottlenecks restricting its promotion

Method used

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  • Solar gradient phase change heat storage indirect steam assisted carbon dioxide capture system

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Embodiment Construction

[0015] Combine below figure 1 The technical solution of the system of the present invention is further described.

[0016] In the present invention, a solar cascade phase change heat storage indirectly generates steam to assist a carbon dioxide capture system in a power plant such as figure 1 System principle and structure

[0017] Including power generation subsystem, carbon dioxide capture subsystem, cascade phase change heat storage indirect steam generation subsystem and medium temperature solar heat collection subsystem.

[0018] The power generation sub-system (1) consists of steam boiler A1, steam turbine high pressure cylinder A2, steam turbine medium pressure cylinder A3, steam turbine low pressure cylinder A4, condenser A5, 3 high pressure feed water heaters A6-A8, 4 low pressure condensate water heaters A9-A12, deaerator A13, feed water pump A14, generator are connected through pipelines and various valves; four-stage air extraction control valve V1, five-stage ai...

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Abstract

The invention discloses a solar gradient phase change heat storage indirect steam assisted carbon dioxide capture system of a power plant. The system comprises a power generation sub-system, a carbon dioxide capture sub-system, a gradient phase change heat storage indirect steam generation sub-system and a solar heat collection sub-system, wherein carbon dioxide capture of the power plant and solar heat collection are connected through gradient phase change heat storage to form an integration system; a gas suction and delivery pipe of a steam turbine is connected with a steam pipe of the gradient phase change heat storage indirect steam generation sub-system and an inlet of a reboiler, the solar heat collection sub-system is connected with an inlet of a gradient phase change heat accumulator, and solar heat collection backflow is subjected to heat exchange with condensate through a condensate heating heat exchanger. By means of the gradient phase change heat storage, a heat exchange temperature difference can be kept, the heat exchange effect can be improved, and the solar assistance stability can be improved. Through the connection and reasonable flow distribution and control, efficiency reduction of the power plant due to steam suction is reduced and the whole efficiency of a power generation system is increased while solar assisted carbon dioxide capture of the power plan is realized.

Description

technical field [0001] The invention relates to a carbon dioxide capture technology for a solar-assisted power plant, in particular to a carbon dioxide capture system for a solar-assisted cascade phase change heat storage indirectly generating steam for an auxiliary power plant. Using medium-temperature solar collectors combined with cascade heat storage technology to realize the complementary matching of solar energy and power plant steam extraction energy for carbon dioxide capture, through cascade heat exchange to ensure heat exchange temperature difference and improve heat exchange efficiency, at the same time, realize stable capture of carbon dioxide in power plants and reduce steam turbines The amount of extracted steam can be increased to increase the feed water temperature of the steam boiler. It can also be used to use the steam turbine for heat storage when the power load is low, effectively reducing the efficiency and benefit of thermal power plants due to the additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14F03G6/06F01K17/06F22B1/00F24J2/34
CPCY02A50/20Y02C20/40Y02E10/46
Inventor 严晋跃赵军安青松刘良旭
Owner NINGBO RUIXIN ENERGY TECH
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