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A carbon dioxide capture solution enhanced regeneration system and method

A carbon dioxide and regeneration system technology, applied in chemical instruments and methods, separation methods, inorganic chemistry, etc., can solve problems such as increasing technology application costs, and achieve the effects of reducing degradation loss, consumption, and energy consumption

Active Publication Date: 2015-08-05
HUANENG CLEAN ENERGY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The cost caused by the degradation of the absorbent in the conventional monoethanolamine-based capture system accounts for more than 5% of the total system cost and more than 10% of the system's operating cost. The disposal of by-products related to safety and environmental protection It will also increase the cost of technology application

Method used

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  • A carbon dioxide capture solution enhanced regeneration system and method
  • A carbon dioxide capture solution enhanced regeneration system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] as attached figure 1 , the regeneration tower 1 is connected with the absorption tower, and the absorption solution reacts with carbon dioxide in the absorption tower to form a rich liquid and leaves the absorption tower, enters the regeneration tower 1 from the top of the regeneration tower 1 and flows to the bottom, and the solution enters the vertical tower connected to the lower part of the regeneration tower 1 side Type or horizontal thermosyphon reboiler 2, reboiler 2 provides heat source from external steam, absorbs solution and returns to regeneration tower 1 after absorbing heat, and maintains temperature and pressure in regeneration tower 1.

[0026] Two sonotrode panels 3 are parallel and equal in height and stand on both sides of the bottom side wall of the regeneration tower 1, such as figure 2 As shown, the ultrasonic generator panel 3 is composed of multiple sets of ultrasonic vibrators located at different heights. The vibrators output continuous or pul...

Embodiment 2

[0028] The structure of regeneration tower 1 and reboiler 2 is consistent with that of example 1. Ultrasonic generator panel 3 is placed flatly at the bottom of regeneration tower 1, and ultrasonic waves are output from the bottom to the solution, and the solution flowing into regeneration tower 1 from reboiler 2 is completely immersed in ultrasonic generator The ultrasonic generator panel 3, according to the liquid level information at the bottom of the regeneration tower fed back by the liquid level sensor 6, after the liquid level reaches a certain value, the vibrator of the ultrasonic generator panel 3 starts to work, and the number of working vibrators is adjusted according to the change of the liquid level. The ultrasonic controller 4 modulates the output frequency and power of the vibrator on the ultrasonic generator panel 3 according to the feedback values ​​of the pressure sensor 5 and the temperature sensor 7. When the modulation frequency and power range are lower tha...

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Abstract

A strengthening and regenerating system for a carbon dioxide capturing solution comprises a regeneration tower, a reboiler, a supersonic generator panel, a supersonic controller, a pressure sensor, a liquid position sensor, and a temperature sensor; rich liquor from an absorption tower enters the regeneration tower from the top part of the regeneration tower, then flows to the bottom part of the regeneration tower, enters the reboiler, absorbs the thermal energy there, and then is returned to the regeneration tower; when the solution submerges the supersonic generator panel, according to the liquid position information obtained by the liquid position sensor, a vibrator in the supersonic generator panel under the liquid position is started to work, then the carbon dioxide in the liquid phase is promoted to evaporate from the liquid phase through a supersonic cavitation effect, then the carbon dioxide rises to the top part of the regeneration tower and forms a pressure; and according to the pressure value measured by the pressure sensor and the temperature value measured by the temperature sensor, the supersonic controller adjusts the output frequency and power of the vibrator in the supersonic generator panel. The system can accelerate the evaporation speed of the carbon dioxide in the solution, reduces the desorption temperature, reduces the external steam consumption, improves the absorption rate of carbon dioxide and the regeneration degree of the solution, and reduces the energy consumption of each unit of carbon dioxide.

Description

technical field [0001] The invention belongs to the technical field of flue gas carbon dioxide capture, in particular to a carbon dioxide capture solution enhanced regeneration system and method. Background technique [0002] The large-scale emission of greenhouse gases caused by industrial production is an important reason for the frequent occurrence of extreme weather. Therefore, the reduction of greenhouse gas emissions represented by carbon dioxide has increasingly attracted the attention of the international community. The combustion of fossil fuels in power plants is the main source of industrial carbon dioxide emissions. In my country, carbon dioxide emissions from power plants account for about half of the total emissions. Relevant studies have shown that in various emission reduction technology combinations to deal with climate change, based on power plant smoke Gas carbon dioxide capture technology is an essential component. [0003] Existing carbon dioxide capture...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/18C01B31/20C01B32/50
CPCY02A50/20Y02P20/151
Inventor 王金意许世森郜时旺郭东方刘练波牛红伟王晓龙
Owner HUANENG CLEAN ENERGY RES INST
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