Abstract:
PURPOSE: An oxygen selective absorbent with rapid absorbent rate and a method for manufacturing the same are provided to rapidly absorb oxygen from atmosphere. CONSTITUTION: A method for manufacturing an oxygen selective absorbent with rapid absorbent rate includes the following: BaMg(CO_3)_2 particles or BaMg(CO_3)_2 particles with MgCO_3 or Mg(OH)_2 attached on the external sides are prepared; and the particles are fired at high temperatures. In the BaMg(CO_3)_2 particles with MgCO_3 or Mg(OH)_2 attached on the external sides, the molar ratio of the MgCO_3 or Mg(OH)_2 to BaMg(CO_3)_2 is 1 : 10. The BaMg(CO_3)_2 particles are prepared by dispersing the mixture of barium containing compounds and carbonate in distilled water and adding a magnesium carbonate precursor in the dispersed solution. [Reference numerals] (AA) Absorbed amount/saturated absorbed amount; (BB) Time(minutes); (CC) Comparative example 1; (DD) Example 1; (EE) Example 2
Abstract:
PURPOSE: Continuous method and apparatus for preparing hydrocarbon using biological originated lipid and hydrotalcite are provided to produce the hydrocarbon without using hydrogen, and to reduce the operational costs. CONSTITUTION: A continuous method for preparing hydrocarbon using biological originated lipid and hydrotalcite comprises the following steps: supplying raw materials selected from triglyceride, fatty acid, or fatty acid derivative into a first reactor(2); contacting the raw material in the first reactor with a hydrotalcite catalyst to obtain the hydrocarbon; recycling the used hydrotalcite after the termination of the reaction inside the first reactor; supplying the raw materials into a second reactor(3) during the recycling process of the hydrotalcite; contacting the raw materials in the second reactor with the hydrotalcite catalyst to obtain the hydrocarbon; and recycling the used hydrotalcite after the termination of the reaction inside the second reactor, and repeating previous steps.
Abstract:
PURPOSE: Substitution-desorption process for light olefin separation is provide to collect olefin in gas exhausted from an olefin cleansing step by introducing a recovery step before or after an adsorption step, thereby securing olefin collecting ratio higher than existing processes. CONSTITUTION: Substitution-desorption process for light olefin separation from olefin-containing mixed gas comprises: a step of adsorption olefin by introducing olefin-containing mixed gas into an adsorption bed; a step of collecting olefin by introducing olefin-containing gas exhausted from an olefin cleansing step to the adsorption bed; a step of increasing the purity of olefin in the adsorption bed with cleansing paraffin and other gases by introducing olefin of high concentration into the adsorption bed; and a step of manufacturing olefin of high purity by desorbing olefin by introducing desorbing agent to the adsorption bed.
Abstract:
PURPOSE: A recovery system of carbon dioxide using a TSA process of the combustible waste gas for increasing the removal ratio of the carbon dioxide is provided to recollect the carbon dioxide by using the recovery system in the combustible waste gas. CONSTITUTION: A dried combustion flue gas puts into an adsorption tower. The exhaustion of the charged nitrogen contained gas is charged in the absorption of the carbon dioxide. A carbon dioxide selectivity absorbent is filled in the absorption tower. The gas is consecutively recollected within the adsorption tower. The heater attaches and detaches the carbon dioxide with the rising of the temperature of the gas. The carbon dioxide is removed by the discharged nitrogen contained gas.
Abstract:
본 발명은 수소 정제를 위한 압력변동흡착(PSA:Pressure Swing Adsorption) 장치 및 이를 이용한 수소 정제 방법에 관한 것이다. 본 발명의 압력변동흡착장치를 이용한 수소 정제 방법은, 원료 공급관과 연결된 다수개의 흡착탑과, 상기 흡착탑에서 정제된 수소가 포집되는 수소 저장조와, 상기 각 흡착탑에 연결된 다수의 관들을 개폐하는 밸브로 이루어진 압력변동흡착장치에 있어서, 상기 흡착탑은, 그 내부에 상기 원료 공급관을 통해 공급되는 수소 혼합기체에 포함되어 있는 이산화탄소와 메탄 및 일산화탄소의 제거가 가능한 활성탄과 제올라이트 13X, 제올라이트 5A 및 제올라이트 5A가 아닌 이산화탄소 선택성 흡착제의 흡착제가 다층 구조로 충진되고, 상기 흡착탑 내의 흡착제에 순차적으로 흡착되어 배출되는 수소 중에 일산화탄소 함유량을 최소로 하는 것을 기술적 특징으로 하며, 정제된 수소 제품 내의 일산화탄소 함유량을 10ppm 이하로 낮춰 고순도의 수소 제품을 생산에 용이한 이점이 있다. 수소 정제(hydrogen purification), 흡착제(adsorbent), 일산화탄소 선택성 흡착제(carbon monoxide selective adsorbent), 압력변동흡착(pressure swing adsorption)
Abstract:
A method of suppressing ammonia evaporation is provided to improve the efficiency of aqueous ammonia, to save energy and to improve the purity of the recovered carbon dioxide in a carbon dioxide recovery apparatus by lowering the partial pressure of ammonia by adding additive. A method of suppressing ammonia evaporation in a carbon dioxide recovery apparatus comprises a step of adding additive selected from AMP (2-amino-2-methyl-1-propanol), AMPD (2-amino-2-methyl-1,3-propandiol), AEPD (2-amino-2-ethyl-1,3-propandiol), THAM (trihydroxymethyl aminomethane) and mixtures thereof to aqueous ammonia. The aqueous ammonia is used at the temperature of 0-90°C in the apparatus, and the amount of the additive for the method is 0.1-10wt% with respect to that of aqueous ammonia. The method is optionally combined with at least one of the water washing method, the condensation method and the method of elevating pressure in order to lower the partial pressure of ammonia. An aqueous ammonia for the carbon dioxide recovery apparatus comprises an additive selected from AMP (2-amino-2-methyl-1-propanol), AMPD (2-amino-2-methyl-1,3-propandiol), AEPD (2-amino-2-ethyl-1,3-propandiol), THAM (trihydroxymethyl aminomethane) and mixtures thereof.
Abstract:
본 발명은 공기 중에서 질소를 선택적으로 흡착하는 제올라이트 분자체를 흡착제로 충진한 흡착탑을 압력변동흡착법으로 운전하여 공기로부터 질소를 농축하여 제조하는 방법에 있어서, 공기중의 CO 2 와 수분을 제거하는 전처리공정에 2개의 전처리탑을 사용하고 전처리공정에서 정제된 공기를 도입하여 질소를 농축, 분리하는 주분리공정에 제올라이트 분자체가 충진된 2개의 질소분리탑을 사용하여 전처리 공정의 한주기가 주분리공정의 두 주기가 되게 운전하면서 제품질소 순도가 낮은 경우에 생산성을 향상시킨 압력변동흡착식 질소제조장치에 관한 것으로서 전처리 공정은 순차적으로 승압스텝-흡착스텝-감압스텝-일차 세정스텝-휴지스텝-이차 세정스텝으로 이루어지고, 주분리공정은 순차적으로 승압스텝-흡착스텝-세정스텝-탈착스텝으로 구 성되어 있으며 주분리공정의 흡착스텝과 세정스텝의 배가스가 전처리탑의 세정에 사용된다.