Patent Details

Patent ID: CN201010201832.1

A method of preparing a modified calcium-based flue gas carbon dioxide absorbent for the removal of

Description: A method for removing CO2 from flue gas of a modified calcium-based sorbents preparation method, the natural calcium based sorbents calcined product of its mass from 0.25 to 0.75% lignin sulfonate and 0.1 to 10% by hydration of clay minerals used to get. The specific method is the natural calcium based sorbents limestone or dolomite, calcined for 0.5 to 2 hours under an air atmosphere, the calcined product is dissolved in water at ambient temperature and pressure, while adding a certain proportion of clay minerals and lignin sulphonate using 100 ~ 300r / min stirring speed of 0.5 to 2 hours after the mixture at 100 ~ 130 ℃ under drying, calcining after 850 ℃ obtained after the modified calcium-based sorbents, the absorbent can be big Removal of magnitude performance increase its atmospheric or pressurized CO2 in flue gas conditions. Modified calcium-based sorbents of the invention as compared to conventional absorbers, greatly improve the performance of its circulation carbonation and capture CO2 in the process of circulating anti-sintering capacity.

Patent Details:

DOI: B01D53 / 81 (2006.01) I; B01D53 / 62 (2006.01) I