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Solar aided carbon dioxide trapping integrated system

A carbon dioxide, integrated system technology, applied in solar thermal power generation, solar thermal devices, inorganic chemistry, etc., can solve the problems of high energy consumption, reduce the efficiency of power plants, etc., to maintain stable operation, reduce adverse effects, and improve the overall efficiency of the system. Effect

Active Publication Date: 2014-04-30
TIANJIN UNIV
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Problems solved by technology

[0005] Aiming at the high energy consumption problem caused by the current capture system, the present invention proposes a solar-assisted carbon dioxide capture integrated system, which can make full use of medium and low temperature solar heat collection to compensate the energy consumption of the traditional capture system according to different integration connection relationships demand, while realizing cascade utilization of solar energy, it can effectively reduce the efficiency drop caused by steam extraction in power plants

Method used

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  • Solar aided carbon dioxide trapping integrated system
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Embodiment 1

[0024] When the heat collection temperature of the solar heat collection subsystem 3 is medium temperature, the connection relationship is: figure 1 As shown, the outlet end of the working fluid in the solar heat collection subsystem 3 is connected to the high temperature side inlet of the water supply heat exchanger 4 in the power generation subsystem 1, and medium and high temperature solar heat collection heating is used to replace the extraction water heating, The high-temperature side outlet of the feedwater heat exchanger 4 is then connected to the high-temperature side inlet of the reboiler 16 in the carbon dioxide capture system 2, and the high-temperature side outlet of the reboiler 16 is connected to the solar heat collection subsystem The inlet ends of the working fluid of 3 are connected to form a solar heat collection cycle. The connection mode of embodiment 1 can collect the heat of the solar heat collection subsystem to a medium-high temperature of about 200-350℃,...

Embodiment 2

[0026] The working fluid outlet end of the solar heat collection subsystem 3 is connected to the high temperature side inlet end of the reboiler 16 in the carbon dioxide capture subsystem 2, and the high temperature side outlet of the reboiler 16 is connected to the solar collector The inlet ends of the working fluid of the thermal subsystem 3 are connected to form a solar heat collection cycle. The connection method of embodiment 2 can directly use the solar collector subsystem to collect the working fluid in the solar collector series to the temperature range required by the reboiler and supply it to the reboiler, which simplifies the system and makes full use of it. The solar heat collection system has higher heat collection efficiency at low temperature, and reduces the heat dissipation loss of the working fluid at high temperature.

[0027] In summary, the heat output end of the solar heat collection subsystem adopts different connection methods to reasonably allocate the en...

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Abstract

The invention discloses a solar aided carbon dioxide trapping integrated system, which mainly comprises three parts, i.e. a power generation subsystem, a carbon dioxide trapping subsystem and a solar heat collection subsystem, wherein the subsystems are connected mainly through a boiler feed water heater, a reboiler and a flue gas pretreatment device to form the whole integrated system. According to the system, the high and low energy requirements of related parts among the solar heat collection subsystem, the power generation subsystem and the carbon dioxide trapping subsystem are reasonably allocated and integrated in different connecting ways at the heat output end of the solar heat collection subsystem to realize the gradient utilization of energy, so that the energy consumption of extraction of vapor from a steam turbine of a power plant can be greatly reduced, the stability of the power plant can be maintained, the dual effects of utilizing renewable energy resources and reducing the carbon dioxide emission of the power plant are achieved, and the large-scale application of solar energy and an integrated flue gas trapping technology in China are forcefully promoted.

Description

Technical field [0001] The invention relates to a medium and low temperature solar energy assisted carbon dioxide capture integration technology, in particular to the integration of a medium and low temperature solar heat collection system and a carbon dioxide capture system in flue gas. Solar energy is used to provide energy compensation for the carbon dioxide capture system, and is used in cascade utilization of solar energy. At the same time, it effectively reduces the efficiency drop of the power plant due to steam extraction. Background technique [0002] In the current chemical absorption capture system, a large amount of power plant steam is consumed when the solution is regenerated, which causes a drop in power plant efficiency, increases the capture cost, and becomes a constraint on CO 2 The main factor for large-scale application of capture technology. [0003] For CO in flue gas from existing power plants 2 The technical solution of carbon capture after combustion is wid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/18C01B31/20F24J2/04C01B32/50
CPCY02E10/44Y02P20/10Y02P20/133
Inventor 严晋跃王甫赵军李海龙赵力
Owner TIANJIN UNIV
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