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Method and device for preparing and purifying carbon dioxide adsorbent

A technology of carbon dioxide and adsorbent, which is applied in the fields of air pollution control and related environmental protection, and can solve the problems of not being able to be popularized on a large scale, easy to deteriorate, and high cost of use

Pending Publication Date: 2019-09-13
黄华丽
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The adsorbents mainly include alkaline-like oxides (CaO, etc.), lithium-based materials (lithium silicate), molecular sieves, and metal-organic framework materials (MOF), etc. Most of these solid adsorbent chemical adsorbents are medium-high temperature Adsorbent, generally at high temperature with CO 2 Physical or chemical adsorption occurs, and the material is easy to deteriorate after repeated use, and the cost of use is high, so it cannot be promoted on a large scale

Method used

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  • Method and device for preparing and purifying carbon dioxide adsorbent
  • Method and device for preparing and purifying carbon dioxide adsorbent
  • Method and device for preparing and purifying carbon dioxide adsorbent

Examples

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Embodiment 1

[0039] Embodiment 1: a kind of preparation method of described sorbent: ferrous sulfate, sodium hydroxide and water are added mixed reactor and mixed in the ratio of about 1: 0.1: 2 (molar ratio, the same below), after the completion of the reaction ( About 10-30 minutes, the same below, different materials), dry and activate in the air, the drying temperature is about 40-60 ° C, the time is about 3 hours, remove the moisture in the material, and then activate, activate The temperature is about 120°C. When the gas components in the gas flow no longer change, the activation is completed, and the obtained solid product is an adsorbent according to the present invention.

Embodiment 2

[0040] Embodiment 2: a kind of preparation method of described adsorbent: add cobalt sulfate heptahydrate and sodium hydroxide into mixing reactor and mix by about 1: 1 ratio, after the completion of the reaction, carry out drying and activation in air, drying temperature The temperature is 60-95°C, the time is about 2 hours, the moisture in the material is removed, and then activated, the activation temperature is about 150°C, when the gas composition in the gas flow no longer changes, the activation is completed, and the obtained solid product is An adsorbent according to the present invention.

Embodiment 3

[0041] Embodiment 3: a kind of preparation method of described sorbent: add ferrous sulfate heptahydrate and sodium hydroxide into mixing reactor and mix in about 1: 2 ratio, after the completion of the reaction, dry and activate in nitrogen, dry The temperature is the same as in Example 2, the activation temperature is about 250° C., and the time is about 2 hours. The obtained solid product is an adsorbent according to the present invention.

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Abstract

The invention discloses a method and device for preparing and purifying a carbon dioxide adsorbent used for removing carbon dioxide from airflow and belongs to the technical fields of air pollution control and environmental protection. The method is characterized by comprising the following steps: mixing salts of iron or manganese or cobalt or copper and related derivative materials, alkali or alkaline substances and related derivative materials, water and a forming agent according to a certain ratio and procedure, drying and activating the obtained solid compound or mixture so as to obtain asolid product, namely the adsorbent. The adsorbent is introduced into a gas-solid reactor, the carbon dioxide in the airflow carries out a gas-solid reaction with the adsorbent at a certain temperature so as to be removed, and then the adsorbent is regenerated and recycled. The invention furthermore discloses a related purification device.

Description

technical field [0001] The invention relates to a preparation method and device for a carbon dioxide adsorbent, and belongs to the technical field of air pollution control and related environmental protection. Background technique [0002] Carbon dioxide produced by fossil fuel combustion is the main source of greenhouse gases emitted by human activities. In addition to thermal power plants that use coal as the main fuel, industrial processes such as cement, glass building materials, and iron and steel metallurgy also emit a considerable amount of carbon dioxide gas. Carbon dioxide emissions have had an important impact on the global atmospheric environment. To this end, international conventions and governments of various countries have formulated specific action plans and emission reduction measures for controlling and reducing carbon dioxide emissions. [0003] Generally, the solid adsorption method is one of the main capture methods for carbon dioxide in the flue gas pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/02B01J20/28B01J20/30B01D53/12
CPCB01J20/02B01J20/28045B01D53/12B01D2257/504Y02C20/40
Inventor 黄立维黄华丽
Owner 黄华丽
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