An integrated device and method for carbon dioxide capture and regeneration

Abstract

The invention discloses a carbon dioxide capture and regeneration integrated device and method. The carbon dioxide capture and regeneration integrated device comprises a water vaporization device, a flue gas and water vapor mixing device, a gas ionizer, a carbon dioxide collecting and adsorbent regeneration device, and a gas-solid separation device. Carbon dioxide in flue gas can be captured and recovered by flue gas heating, carbon dioxide adsorption and adsorbent recycling, so that carbon dioxide emission can be reduced. Low-grade heat energy is recovered from the flue gas for heating waterand an adsorbent to form water vapor to promote carbon dioxide absorption and realize the recycling of the carbon dioxide adsorbent, and the energy efficiency of the entire adsorption process is improved. The gas ionizer is added to the flue gas and water vapor mixing device to ionize a gas and promote gas adsorption. The carbon dioxide capture and regeneration integrated device has the advantagesof simple equipment, small volume, compact structure, low investment and high adsorbent utilization efficiency, and is suitable for application in flue gas purification and carbon dioxide collectionof coal-fired power plants.

Description

technical field [0001] The invention relates to an integrated device and method for capturing and regenerating carbon dioxide, belonging to the field of recycling and utilizing carbon dioxide. Background technique [0002] Carbon dioxide from the burning of fossil fuels is considered one of the most important greenhouse gases. The increase in the concentration of greenhouse gases in the atmosphere has led to an increase in the greenhouse effect year by year, and has caused environmental problems such as global warming, rising sea levels, and melting glaciers. For CO in large flue gas sources such as coal-fired power plants and cement plants 2 Capture and storage will help reduce carbon dioxide emissions and mitigate the greenhouse effect. At the same time CO 2 It is also a potential carbon resource. At present, the resources on the earth are becoming increasingly tense, and many scholars have devoted themselves to CO 2 Capture and storage and utilization studies where C...

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Problems solved by technology

In terms of solid-state amine separation of carbon dioxide process equipment, Chinese patent CN104162341A relates to a device and method for collecting carbon dioxide from industrial flue gas. By using a heating machine and a cooling machine to perform cold and heat treatment on the adsorbent, the recycling of the adsorbent is realized. , but the energy consumption of the device increases, and a feeder and a riser are set up to complete the cycle process of the adsorbent, but the adsorption process is complicated and the device is scattered

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