Method for recovering carbon dioxide from tail gas of industrial kiln and producing lithium carbonate

A carbon dioxide and lithium carbonate technology, applied in chemical instruments and methods, lithium carbonate;/acid carbonate, products, etc., can solve the problems of less components, more impurities, affecting separation and purification, etc., to reduce carbon Emission reduction, high gas purity, and large processing capacity

Active Publication Date: 2022-08-02
JIANGSU RONGHUI GENERAL LITHIUM IND CO LTD +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows us to recycle waste gases containing harmful chemical compounds like CO2 into useful products while minimizing environmental pollution or improving energy efficiency. It also includes methods that use specific types of molecules called carbons during decompositon processes to produce Lithium Carbonate with improved properties such as higher capacities than current commercial LCOCs.

Problems solved by technology

This patented technical problem addressed in this patent relates to improving the removal or isolating of harmful gases like NO X during combustions processes without requiring expensive apparatuses or significant amounts of energy input. Current methods involve various techniques involving physical absorbing agents, liquid ammonia scrubbers, solid acid sorbons, and adhesives, among others. However these current solutions face limitations due to their complexity, require multiple steps, consume too much power, generate excess heat, cause damage to devices, and produce environment concerns over future generations.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for recovering carbon dioxide from tail gas of industrial kiln and producing lithium carbonate
  • Method for recovering carbon dioxide from tail gas of industrial kiln and producing lithium carbonate
  • Method for recovering carbon dioxide from tail gas of industrial kiln and producing lithium carbonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In this embodiment, the kiln tail gas used is the natural gas oxygen-enriched combustion kiln tail gas, and after analysis, its water vapor content is 4.70-6.78v%, O 2 Concentration is 13.90~15.10v%, CO 2 Concentration is 2.51~4.39v%, NOx concentration is 0.037~0.060v% (500~800ppm), SO 2 Concentration is 0.014v% (~400ppm), CO concentration is 0.02~0.6v%, H 2 The concentration is 0.01~0.06%, the rest is N 2 . The carbon dioxide in the exhaust gas of the industrial kiln is recovered, and the recovered carbon dioxide gas is used in the ore extraction enterprise to prepare high-purity battery-grade lithium carbonate, and the method is as follows:

[0032] like Figure 1-2 As shown, a method for recovering carbon dioxide and producing lithium carbonate from industrial kiln tail gas comprises the following steps:

[0033] (1) Preprocessing:

[0034] After the industrial kiln exhaust gas is removed by the cyclone dust collector, the denitration and desulfurization system is

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for recovering carbon dioxide from tail gas of an industrial furnace and producing lithium carbonate, which comprises the following steps of: removing particulate matters from the tail gas of the industrial furnace, performing denitration and desulfurization treatment, pressurizing the treated tail gas to 0.1-0.7 MPa, dehydrating, and removing NOx and SO2 by adopting a double-tower temperature swing adsorption device to obtain purified tail gas, introducing into a four-tower pressure swing adsorption device to separate carbon dioxide, and finally introducing the obtained carbon dioxide into a lithium hydroxide solution to prepare lithium carbonate. According to the invention, trace sulfides and nitrogen oxides in the tail gas are removed by using a temperature swing adsorption method, so that the total concentration of SO2 and NOx in the tail gas is 1t; according to the method, a pressure swing adsorption method is adopted to recover carbon dioxide, the obtained carbon dioxide gas is high in purity, high in recovery rate and large in treatment capacity, the separated and refined high-purity carbon dioxide can be used as a raw material in the carbonization process to produce battery-grade lithium carbonate, and resource utilization of the carbon dioxide in the tail gas of the industrial furnace is achieved.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Owner JIANGSU RONGHUI GENERAL LITHIUM IND CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap