Solid carbon dioxide absorbent and method for removing and concentrating carbon dioxide using the same

A technology for solid carbon dioxide and carbon dioxide, applied in chemical instruments and methods, separation methods, reagents, etc., can solve the problems of by-products, corrosion of process materials, and breakage, and achieve the effect of stable removal.

Active Publication Date: 2016-02-24
KOREA INST OF ENERGY RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are various problems as follows: high-pressure air supply is required; crushing phenomenon (powdering) may occur with the flow of the absorbent; the absorbent needs to be replenished every cycle; since the concentrated carbon dioxide (production gas) contains fine powder absorbent, Filtration required; pressure drop in reaction tower due to particulate absorbent may occur
[0004] In addition, a process of absorbing and removing carbon dioxide by using a carbon dioxide absorber containing liquid amine (amines) is also known, but there are disadvantages in that liquid amine is expensive and processing costs are high, by-products are produced, and corrosion of process materials may occur.
[0005] In addition, there is a carbon dioxide adsorption and removal process using zeolite, but the cost of carbon dioxide removal is high and the economy is low.

Method used

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  • Solid carbon dioxide absorbent and method for removing and concentrating carbon dioxide using the same
  • Solid carbon dioxide absorbent and method for removing and concentrating carbon dioxide using the same
  • Solid carbon dioxide absorbent and method for removing and concentrating carbon dioxide using the same

Examples

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Embodiment 1

[0044] Embodiment 1: take X-type zeolite as the K-containing 2 CO 3 manufacture of absorbent

[0045] Manufactured containing 50% ceramic fiber, 35% X-type zeolite, 3% PVA as an organic binder, 5% cellulose, 5% sepiolite as an inorganic binder, 2% silica powder and a thickness of 0.21 mm of ceramic paper that can be used at high temperatures above 100°C. Using two sheets of ceramic paper, one of them was molded into a wave shape with a pitch of 3.8 mm and a height of 1.8 mm to produce a single-sided corrugated molded product in the form of corrugated paper. This single-face corrugated molded body was wound to form a cylindrical honeycomb with a diameter of 6 cm and a length of 40 cm, and then dried at 110° C. for 5 hours. Immerse the dried honeycomb in 30% K 2 CO 3 After remaining in the solution for 10 minutes, it was taken out, dehydrated at room temperature, and then dried at 150° C. for 24 hours. will load K 2 CO 3 The post-dried honeycombs were kept at 400°C for 2...

Embodiment 2

[0046] Embodiment 2: with gamma alumina as the K-containing 2 CO 3 manufacture of absorbent

[0047] Manufactured containing 50% ceramic fiber, 35% gamma alumina, 3% PVA as organic binder, 5% cellulose, 5% sepiolite as inorganic binder, 2% silica powder and a thickness of 0.21mm ceramic paper that can be used at high temperatures above 100°C. Subsequent steps were carried out in the same manner as in Example 1.

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Abstract

A method for manufacturing a solid carbon dioxide absorbent comprises the steps of: manufacturing papers by mixing 10-80 wt% of a fiber material capable of enduring at over 100°C, 10-80 wt% of a porous inorganic material, and 5-20 wt% of inorganic / organic binder; manufacturing a cylindrical honeycomb molded body by molding the papers in a polarization molded body then winding it; dipping the honeycomb molded body in a solution in which a carbon dioxide absorbing material is dissolved, then drying it; and hardening the honeycomb molded body dipped with the carbon dioxide absorbing material and cooling it. The solid carbon dioxide absorbent manufactured by the method does not generate a breaking phenomenon of the absorbent or a process pressure descent due to the air flow during the removal of carbon dioxide from exhaust gas, does not require a regular filling or filtering of concentrated carbon dioxide, and can realize a stable dry process of absorbing, separating and concentrating carbon dioxide with reduced operating cost and facility cost through process simplification. [Reference numerals] (AA) ceramic paper(comprising ceramic fiber, porous inorganic, binder);(BB) molding in cylindrical honeycomb having cross section with holes by molding a side in wave shape and winding;(CC) dipping absorbent in solution(K2CO3 or Na2CO3 or CaCO3, Amine);(DD) drying, 100-120°C;(EE) plasticizing, 450-600°C

Description

technical field [0001] The present invention relates to a carbon dioxide absorbent and a method for removing and concentrating carbon dioxide using the absorbent, and more particularly to a solid absorbent with a carbon dioxide absorbing substance loaded on a formed honeycomb body and a method for absorbing, separating and concentrating carbon dioxide using the absorbent method. Background technique [0002] Currently, research is actively being carried out to recover carbon dioxide, which is the main cause of global warming. As one of these methods, a carbon dioxide absorption and removal process using a dry absorbent containing an alkali metal salt has conventionally been used. This method involves making a paste of an alkali metal salt in a porous substance such as zeolite and alumina, and then making a paste with a binder (cordierite, etc.), and producing spherical carbon dioxide by spray drying (spray dryer) After absorbing the absorbent, it is used to absorb and remo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/14B01D53/02C01B31/20C01B32/50
CPCY02C20/40Y02P20/151B01D53/02B01D53/62B01J20/28C01B32/50
Inventor 刘允锺金鸿守李东哲
Owner KOREA INST OF ENERGY RES
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