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Decarbonizing solution comprising borate

A technology of borate and carbon water solution, which is applied to the separation of dispersed particles, chemical instruments and methods, separation methods, etc., can solve the problems of inapplicability of oxygen-containing degradation, high price, groundwater pollution, etc., and achieve the effect of superior decarbonization performance

Inactive Publication Date: 2011-04-20
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Since the 1960s, although various organic activators can increase the absorption rate of carbon dioxide by hot potassium carbonate, they cannot be applied due to their oxygen-containing degradation.
But this activator contains V 2 o 5 , in addition to being expensive, it is a highly toxic chemical, a heavy metal compound, and will pollute groundwater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation:

[0034] Mix 2 moles of KOH with 1 mole of H 3 BO 3 react, then add water to prepare K 2 HBO 3 A decarburization solution with a weight content of 22%.

[0035] Using the above-mentioned decarburization solution for a decarburization device in an ethylene oxide production ethylene oxide device;

[0036] The pressure is 2.34MPa, and the device originally used K with a weight concentration of 18%. 2 CO 3 decarb solution, now use K 2 HBO 3 The decarburization solution with a weight content of 22% can increase the production capacity of the decarburization device by 40% under the condition that other conditions remain unchanged.

Embodiment 2

[0038] Preparation:

[0039] For containing CO 2 Decarburization of a certain blast furnace gas, the original use of K with a weight concentration of 25% 2 CO 3 solution, now add K at a concentration of 5% by weight 2 HBO 3 Yes, when other production conditions remain unchanged, the capacity of the device increases by 50%.

Embodiment 3

[0041] In an ethylene oxide production unit, the original use of K with a weight content of 32% 2 CO 3 The solution removes the carbon dioxide therein, and now changes to:

[0042] K 2 CO 3 The weight content is 25%, K 2 HBO 3 The solution with a weight content of 7% can increase the device capacity by 55% when other production conditions remain unchanged.

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Abstract

The present invention discloses one kind of decarbonizing solution comprising borate, and features that the decarbonizing solution is water solution of K2HBO3 in the concentration of 18-35 wt%. The decarbonizing solution comprising borate has excellent decarbonizing performance, no oxidation, no contained virulent chemical and no contamination on underground water.

Description

technical field [0001] The present invention relates to solutions for removing carbon dioxide from gas mixtures. technical background [0002] The removal of carbon dioxide from the oxygen-containing mixed gas is often encountered in industry. For example, the carbon dioxide generated by the side reaction of the ethylene oxide production unit must be removed so that the reaction gas can be recycled; industrial boilers The flue gas generated after combustion contains both high carbon dioxide and excess oxygen. In order to recover the carbon dioxide in the flue gas or to reduce the emission of carbon dioxide, it is also necessary to remove carbon dioxide. [0003] There are physical solvent method and chemical reaction solvent method for industrial solution circulation method to remove carbon dioxide. However, regardless of physical solvent and chemical reaction solvent, with the development of technology and the requirement of reducing energy consumption, the general trend of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14B01D53/62B01D53/79
Inventor 张成芳陈玲君奚安
Owner EAST CHINA UNIV OF SCI & TECH
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