Abstract:
본 발명에 따른 고체 이산화탄소 흡수제의 제조 방법은 1) a) 세라믹 섬유 10 ~ 80 중량%, b) 다공성 무기 물질 10 ~ 80 중량% 및 c) 유기 바인더, 무기 바인더 또는 그 혼합물 5 ~ 20 중량%를 혼합하여 종이를 제조하는 단계: 2) 상기 종이를 편파성형체로 성형한 후 감아서 원통형 허니컴 성형체를 제조하는 단계; 3) 상기 허니컴 성형체를 이산화탄소 흡수 물질이 용해된 용액에 침적한 후 건조하는 단계; 및 4) 상기 이산화탄소 흡수 물질이 담지된 허니컴 성형체를 소성한 후 냉각하는 단계를 포함하며, 이에 따라 제조된 고체 이산화탄소 흡수제를 이용하면 배기가스 중 이산화탄소를 제거할 때 공기의 흐름에 따른 흡수제의 깨짐 현상이나 공정 압력의 강하가 발생하지 않으며, 농축 이산화탄소의 필터링이나 주기적 보충이 불필요하고, 공정 단순화를 통해 장치비용과 운전비용이 절감된 안정적인 건식 이산화탄소 흡수 및 분리 농축 공정을 실현할 수 있다.
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
Abstract:
The present invention relates to a manufacturing method for carbon paper by the wet sedimentation of ozone-treated carbon fibers with hydrophilic functional groups, carbon paper manufacture thereby and a fuel cell comprising the carbon paper and, more specifically, to a manufacturing method for carbon paper by a wet process which is characterized by using a carbon fiber dispersion containing carbon fibers in which surface is oxidized by ozone treatment, carbon paper manufactured thereby and a fuel cell comprising the same. The present invention is able to provide carbon paper with excellent conductivity and gas transmittance since carbon fibers have aeolotropy arrangement and are evenly dispersed. [Reference numerals] (AA) Carbon fibers; (BB) Ozonation reaction of carbon fibers; (CC) Oxidized carbon fibers
Abstract:
PURPOSE: A manufacturing method of carbon paper provides carbon paper with excellent electric conductivity and air permeability by uniformly dispersing carbon fibers in an anisotropic arrangement. CONSTITUTION: A manufacturing method of carbon paper by a wet process includes a step of controlling the charge density of a dispersion solution in which carbon fiber is dispersed to 2-50 meq/L and the viscosity of the dispersion to 110-507 cP. The charge density and the viscosity of the dispersion liquid are controlled by adding a thickening agent and the anionic material into the dispersion. The thickening agent is selected from carboxymethyl cellulose, polyethylene oxide, polyethylene glycol, hydroxyethyl, cellulose, acrylic tackier and a mixture thereof.