CO2 absorption separation device and CO2 absorption separation method by hot potash process

A separation device, potash technology, applied in separation methods, through chemical separation, dispersed particle separation, etc., can solve problems such as complex process operation, environmental pollution, high energy consumption, etc., to overcome high cost and large loss , the effect of a wide range of sources

Inactive Publication Date: 2012-11-07
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a word, in the current patents of the hot potash alkali method, although the improved method adopted can improve CO2 absorption to a certain extent, the overall effect is not satisfactory, and there are problems such as unstable production process, high energy consumption, or Different degrees of defects such as complicated process operation, high cost, or pollution to the environment

Method used

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  • CO2 absorption separation device and CO2 absorption separation method by hot potash process
  • CO2 absorption separation device and CO2 absorption separation method by hot potash process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 (comparative example)

[0024] Take by weighing 2.5g salt of wormwood, 0g sodium metaborate, 0g sodium metavanadate, be made into 50g absorption solution, wherein potassium carbonate concentration is 5 wt%, join in the absorption bottle, add the rotor of constant temperature magnetic stirrer in the absorption bottle, Seal the absorption bottle, store gas in the gas storage tank to 150KPa, set the temperature of the water bath to 293K, and start the absorption experiment, in which CO 2 The absorption rate and absorption capacity are shown in Table 1.

Embodiment 2

[0026] Take by weighing 5g salt of wormwood, 0.5g sodium metaborate, 0.25g sodium metavanadate, be made into 50g absorption liquid, wherein the concentration of sodium carbonate is 10 wt%, join in the absorption bottle, add the temperature of constant temperature magnetic stirrer in the absorption bottle Rotor, seal the absorption bottle, store gas in the gas storage tank to 100KPa, set the temperature of the water bath to 303K, and start the absorption experiment, in which CO 2 The absorption rate and absorption capacity are shown in Table 1.

Embodiment 3

[0028] Take by weighing 7.5g sodium carbonate, 1g sodium metavanadate, 0.3g sodium metavanadate, make 50g absorption liquid, wherein the concentration of sodium carbonate is 15 wt%, join in the absorption bottle, add constant temperature magnetic stirrer in the absorption bottle rotor, seal the absorption bottle, store gas in the gas storage tank to 130KPa, set the temperature of the water bath to 365K, and start the absorption experiment, in which CO 2 The absorption rate and absorption capacity are shown in Table 1.

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PUM

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Abstract

The invention discloses a CO2 absorption separation device and a CO2 absorption separation method by a hot potash process, belonging to the technical field of marsh gas separation and purification. In the invention, the absorption liquid is prepared by using carbonate as an absorbent, metaborate as an activating agent and metavanadate as a corrosion inhibitor, and the CO2 absorption separation device is used for carrying out absorption separation on the CO2. The carbonate absorbent selected in the invention has the advantages of wide raw material sources and low cost, and is environment-friendly; and the addition of the metaborate enhances the absorption rate so as to obviously increase the CO2 absorption capacity, lowers the corrosion degree of equipment, and increases the absorption rate. The invention has an important promotion action on energy and chemical engineering, particularly development of marsh gas purification and separation technology.

Description

technical field [0001] The invention belongs to the technical field of biogas separation and purification, and specifically relates to a CO 2 Absorption and separation device and its hot potash method for absorption and separation of CO 2 Methods. Background technique [0002] Energy is an important strategic resource for the sustainable development of all countries in the world and a source of power for social productivity. With the increasing consumption of non-renewable energy such as petroleum and coal, it is particularly important to seek green and environmentally friendly renewable new energy. As a new type of renewable clean energy, biogas has abundant and cheap raw materials and high combustion calorific value. Low emission, high anti-knock safety performance and so on. [0003] The composition of biogas is relatively complex, and its most important component is methane (CH 4 ) content is usually about 60%-70%, carbon dioxide (CO 2 ) 30%-40%, in addition to a sm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/62
CPCY02C10/04Y02A50/20Y02C20/40
Inventor 李十中陈郴蒲薇华
Owner TSINGHUA UNIV
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