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Carbon dioxide sequestration involving two-salt-based thermolytic processes

A carbon dioxide, second technology, applied in the field of carbon dioxide sequestration involving di-salt-based pyrolysis process, able to solve the problem that the method is not yet fully satisfactory, compromising efficiency, etc.

Inactive Publication Date: 2015-01-14
SKYONIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The deficiencies mentioned are not intended to be exhaustive, but tend to impair the efficiency of previously known technologies for removing carbon dioxide from waste streams; however, those deficiencies mentioned herein are sufficient to show that Approaches emerging in the art have not been entirely satisfactory and there is a significant need for the technology described and claimed in this disclosure

Method used

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  • Carbon dioxide sequestration involving two-salt-based thermolytic processes
  • Carbon dioxide sequestration involving two-salt-based thermolytic processes
  • Carbon dioxide sequestration involving two-salt-based thermolytic processes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0329] Example 1 - Using CaCl 2 CO capture from flue gas 2 to form CaCO 3 process simulation

[0330] Using Aspen Plus version 7.1 software and using known reaction enthalpy, reaction free energy and defined parameters to simulate an embodiment of the present invention to determine the 2 and thermal capture of CO from the flue gas stream 2 to form CaCO 3 Product mass and energy balance and suitable conditions. These results suggest that the use of cheap raw materials, CaCl 2 and water capture CO from flue gas 2 , to form CaCO 3 .

[0331] The defined parameters section contains Figure 5 The flowchart shown in . Simulation results show that MgCl can be efficiently recycled 2 flow with H 2 O reacts with heat to form Mg(OH) 2 . This Mg(OH) 2 followed by saturated CaCl 2 / H 2 O solution and CO from flue gas 2 react to form CaCO 3 , which is filtered from the stream. will eventually form MgCl 2 Recycle to the first reactor to start the process again. This pro...

Embodiment 2

[0363] Example 2 (Example 1) - Magnesium ion catalyzed use of CaCl 2 CO capture from flue gas 2 to form CaCO 3 process simulation.

[0364] Simulation results show that MgCl can be efficiently heated in three separate dehydration reactions, each in its own chamber 2 ·6H 2 O flow, followed by a decomposition reaction (also in its separate chamber) to form Mg(OH)Cl and HCl, i.e. 4 chambers in total. Make Mg(OH)Cl and H 2 O reacts to form MgCl 2 and Mg(OH) 2 , Mg(OH) 2 followed by saturated CaCl 2 / H 2 O solution and CO from flue gas 2 react to form CaCO 3 , which is filtered from the stream. will eventually form MgCl 2 ·6H 2 O and early products are recycled to the first reactor to start the process again.

[0365] This process is not limited to use with CaCl 2 any particular source. For example, it can be obtained by reacting calcium silicate with HCl to obtain CaCl 2 to get.

[0366] Limits and parameters specified for this simulation include:

[0367] • Re...

Embodiment 3

[0389] Example 3 - Magnesium ion catalyzed use of CaCl 2 CO capture from flue gas 2 to form CaCO 3 process simulation.

[0390] The defined parameters section includes Figure 7 The flowchart shown. Simulation results show that it is possible to efficiently heat MgCl in two separate dehydration reactions, each in its own chamber 2 ·6H 2 O flows to form Mg(OH)Cl, followed by a decomposition reaction (also in its separate chamber) to form Mg(OH)Cl and HCl, i.e. three chambers in total. Make Mg(OH)Cl and H 2 O reacts to form MgCl 2 and Mg(OH) 2 , Mg(OH) 2 followed by saturated CaCl 2 / H 2 O solution and CO from flue gas 2 react to form CaCO 3 , which is filtered from the stream. will eventually form MgCl 2 ·6H 2 O is recycled to the first reactor to start the process again. This process is not limited to use with CaCl 2 any particular source. For example, it can be obtained by reacting calcium silicate with HCl to obtain CaCl 2 to get.

[0391] Limits and par...

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Abstract

The present invention relates to an energy efficient carbon dioxide sequestration processes whereby calcium silicate minerals and CO2 are converted into limestone and sand using a two-salt thermolytic process that allows for the cycling of heat and chemicals from one step to another.

Description

Background of the invention [0001] This application claims priority to US Provisional Patent Application Serial No. 61 / 585,597, filed January 11, 2012, which is hereby incorporated by reference in its entirety. [0002] I. Field of Invention [0003] The present invention is generally in the field of removal of carbon dioxide from sources such as power plant waste streams (e.g. flue gas) to convert Group 2 silicate minerals to Group 2 chloride salts and SiO 2 , and converting the Group 2 chloride salt to a Group 2 hydroxide and / or Group 2 hydroxychloride salt. These can then be reacted with carbon dioxide, optionally in the presence of a catalyst, to form Group 2 carbonates. These steps can be combined to form a cycle in which carbon dioxide is sequestered in the form of carbonate and by-products from one or more steps, such as heat and chemicals, are reused or recycled in one or more other steps. [0004] II. Description of related technologies [0005] A lot of domestic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/62C01B31/24C01F11/18C01B32/50C01B32/60
CPCB01D53/62B01D2257/504B01D2251/402C01F5/24Y02C10/04C01F11/18B01D2251/404B01D2251/60B01D2251/604Y02C20/40Y02P20/151C01B32/60
Inventor 乔·大卫·琼斯艾·亚布隆斯基
Owner SKYONIC