Production process and system for preparing vaterite gelling building raw material by utilizing carbon capture technology

Abstract

The invention belongs to the technical field of flue gas treatment and building materials, and particularly relates to a production process and system for preparing vaterite gelling building raw materials by using a carbon capture technology. The production system comprises a pulping system, an absorption tower system and a solid-liquid separation system; the pulping system is connected with the upper part of the absorption tower system, an absorbent of the pulping system is fed into the absorption tower, the bottom of the absorption tower system is connected with the solid-liquid separation system, the solid-liquid separation system is connected with the pulping system, and a solution obtained through separation returns to the absorption tower system again through the pulping system. The invention has the beneficial effects that CO2 in the industrial flue gas can be captured and solidified through the alkaline solid waste, the CO2 is converted into an inorganic efficient cementing material, the inorganic efficient cementing material can be used for manufacturing building materials, retreatment and utilization of the carbon dioxide and the solid waste are achieved, the process and the reaction are simple and easy to achieve, and a higher economic value is achieved.

Description

technical field [0001] The invention belongs to the technical fields of flue gas treatment and building materials, and specifically relates to a production process and system for preparing vaterite gelled building raw materials by using carbon capture technology. Background technique [0002] Carbon capture (CCS) is a process in which carbon dioxide in industrial production is captured by various means and then stored or utilized. Current carbon capture technologies are difficult to recycle and are expensive. In the prior art, when carbon capture technology is used for CO2 treatment, the CO2 in the industrial flue gas is generally captured into the solution by an admixture, and the CO2 in the solution is released in the form of gas and concentrated and purified by means of high energy consumption. The purified CO2 is solidified and landfilled, or used as raw materials for other food and chemical industry supplies. Because the food and chemical industry has extremely high r...

AI Technical Summary

Problems solved by technology

[0005] At present, there is still no good method for recycling carbon dioxide and solid waste in flue gas, and this problem needs to be studied urgently

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