Abstract:
As a method for treating volatile organic compounds in the atmosphere, a method for removing volatile organic compounds which includes a step of generating ozone and a step of generating reaction active species, whereby the volatile organic compounds are decomposed. [Reference numerals] (1) Ozone generator;(2) Air blower;(3) Catalyst layer;(AA) Polluted gas to be treated;(BB) Purified gas
Abstract:
본 발명은 오존과 촉매 하이브리드 시스템을 이용한 질소산화물의 처리방법 및 처리장치에 관한 것으로, 구체적으로 1) 처리하고자 하는 질소산화물 오염공기의 수분을 제거하는 단계; 2) 수분이 제거된 질소산화물 오염공기를 오존과 접촉시켜 오염공기 내 일산화질소(NO)를 이산화질소(NO 2 )로 산화시키는 단계; 3) 잔여 오존을 촉매와 반응시켜 산소라디칼을 발생시킨 후 단계 2)를 거친 질소산화물 오염공기를 산소라디칼과 반응시켜 오염공기 내 이산화질소(NO 2 )를 질산기(NO 3 - )로 산화시키는 단계를 포함하는, 오존과 촉매 하이브리드 시스템을 이용한 질소산화물의 처리방법 및 처리장치에 관한 것이다. 본 발명에 따른 질소산화물의 처리방법 및 처리장치는 고온의 반응이나 환원제로 암모니아 가스의 사용 없이 상온에서 오존과 촉매 하이브리드 시스템을 이용하여 인체에 유해한 일산화질소, 이산화질소 등의 질소산화물을 효율적으로 제거함과 동시에 오존의 사용으로 인한 2차 대기오염을 예방할 수 있어 다양한 분야에서 질소산화물의 제거에 유용하게 적용될 수 있다. 질소산화물, 일산화질소, 이산화질소, 오존, 촉매, 하이브리드
Abstract:
PURPOSE: An apparatus for preparing nanocatalyst is provided to obtain uniform catalytic particles on the surface of a three-dimensional base material by allowing the catalytic particles to be fluidized. CONSTITUTION: A precursor supplying part(110) supplies precursors. A catalytic particle synthesizing part(120) synthesizes catalytic particles(123) based on the chemical reaction of the precursors. A fluidizing and coating part(130) fluidizes a three-dimensional base material and coating the catalytic particles on the surface of the base material in order to form nanocatalyst. A catalytic particles inlet(133) is installed at one side of the fluidizing and coating part. An inert gas inlet(134) is installed at another side of the fluidizing and coating part. The base material is fluidized by the inert gas.
Abstract:
A method for manufacturing a vanadia-titania catalyst is provided to degrade chlorinated organic compounds at a relatively low temperature by using a solvothermal synthesis process. A method for manufacturing a vanadia-titania catalyst comprises the following steps. A mixture of a titania precursor and a vanadia precursor is manufactured. The mixture is transferred to a high temperature portion of an electric furnace by using a transferring gas and protection air. The mixture is processed by a solvothermal synthesis process in the electric furnace. A vanadia particle is coated on a surface of a titanium dioxide carrier. A vanadia-titania catalyst is manufactured to form a core-shell shaped particle.
Abstract:
본 발명은 연소 설비 배출 가스 중의 수은의 저감 방법에 관한 것이며, 보다 상세하게는 할로겐 화합물을 첨착한 활성탄을 분말상으로 연소 설비 배출 가스 중에 직접 혼합하여 투입하거나, 입상으로 고정상 흡착탑으로서 설치하여 배출 가스 중의 수은을 저감시키는 방법에 관한 것이다. 본 발명에 따라 연소 설비에 할로겐 화합물을 첨착한 활성탄을 사용하면 기존의 방법과 비교하여 연소 설비 배출 가스 중의 수은을 현저히 저감시켜, 연소 설비를 친환경적으로 운영할 수 있다. 연소 설비, 배출 가스, 수은, 요오드, 염소, 할로겐 화합물, 첨착 활성탄
Abstract:
본 발명은 질소산화물 제거용 촉매를 담지하기 위한 티타니아 담체, 이를 포함하는 망간산화물-티타니아 촉매, 그 제조장치 및 제조방법, 그리고 질소산화물의 제거방법에 관한 것이다. 본 발명은, 비표면적이 100㎡/g 내지 150㎡/g이고, 평균기공부피가 0.1㎤/g 내지 0.2㎤/g이며, 평균입자크기가 5㎚ 내지 20㎚인 것을 특징으로 하는 티타니아 담체, 이의 제조장치 및 제조방법을 제공한다. 또한, 본 발명은 상기 티타니아 담체에 망간산화물이 담지된 망간산화물-티타니아 촉매 및 그 제조방법, 그리고 상기 촉매를 이용한 질소산화물의 제거방법을 제공한다. 본 발명에 따르면, 촉매의 활성 및 분산도 등이 높아, 특히 200℃ 내외의 저온 영역대에서도 우수한 탈질 효율을 갖는다.
Abstract:
The present invention relates to a vanadia-titania catalyst for removing nitrogen oxides and a manufacturing method thereof. The present invention provides a manufacturing method for the vanadia-titania catalyst for removing nitrogen oxides comprising: an evaporation step of vaporizing titanium precursors; a reactant transport step of transferring the vaporized titanium precursor with an oxygen source to a reaction part; a reaction step of making the vaporized titanium precursor transferred to the reaction part react with the oxygen source and synthesizing titania particles; a collection step of collecting the titania particles by condensing the titania particles; a mixture step of mixing the collected titania particles and a vanadium precursor solution; a dry step of drying the mixture of the titania particles and vanadium precursor solution; and a firing step of firing the dried mixture under oxygen or air, and vanadia-titania catalyst manufactured thereby. The present invention manufactures the vanadia-titania catalyst by being impregnated with vanadia through impregnation and burning on the titania particles (carriers), thereby having high specific surface area and uniform nanoparticle size, exhibiting the excellent dispersion of vanadia and showing excellent nitrogen oxide removal efficiency at low temperatures of 200-250°C. [Reference numerals] (AA) Dip vanadia; (BB) Titanium particles manufactured by a chemical vapor condensation method; (CC) Vanadia-titania catalyst (Example 1)
Abstract:
PURPOSE: A recycle facility for waste material containing polychlorinated biphenyl is provided, which prevents explosion by blocking contact of powder metallic sodium and air. CONSTITUTION: A recycle facility for waste material comprises a device(220) for eliminating waste oil containing polychlorinated biphenyl; a waste oil storage tank(240); a device(250) for eliminating moisture and foreign material contained in the waste oil flowing in from the waste oil storage tank; and an apparatus for reducing concentration of polychlorinated biphenyl(270) which makes chlorine isolated from the polychlorinated biphenyl contained in the waste oil by reacting the waste with the powder metallic sodium.
Abstract:
PURPOSE: An apparatus is provided to achieve improved efficiency of refrigerating machine by measuring, through the use of electric conductivity, refrigerant contamination index and LiBr(Lithium Bromide) solution concentration in an accurate and easy manner. CONSTITUTION: An apparatus comprises a high temperature regenerator(9) having a heating source; a low temperature regenerator(13) having, as a heating source, refrigerant vapor generated from the high temperature regenerator; a condenser(11) for cooling the refrigerant vapor generated from the low temperature regenerator; an evaporator(2) for generating cool water by the refrigerant solution generated from the condenser; an absorber(4) for absorbing the refrigerant vapor evaporated by the evaporator; an absorption solution pump(6) for feeding the dilute solution contained in the absorber to the high temperature regenerator through low temperature and high temperature heat exchangers(7,8); an absorption solution concentration detecting conductivity meter(21) arranged at the outlet pipe of the high temperature regenerator, which senses concentration of lithium bromide solution in a real time basis; a refrigerant circulation pump(17) for circulating refrigerant solution to the evaporator and to the high temperature regenerator when the refrigerant is polluted; a refrigerant contamination index detecting conductivity meter(22) arranged at the outlet pipe of the refrigerant circulation pump; absorption solution cutoff valves(26,27) for cutting off fuel and absorption solution flowing in the high temperature regenerator when the absorption solution has a concentration higher than a predetermined level; refrigerant cutoff valves(24,25) for cutting off refrigerant circulating to the evaporator and guiding the refrigerant toward the high temperature regenerator when the refrigerant contamination index is higher than a predetermined level; and a control unit(23) for receiving signals from the absorption solution concentration detecting conductivity meter and the refrigerant contamination index detecting conductivity meter and transmitting signals to valves.
Abstract:
The present invention relates to a manufacturing apparatus of a silica-titania catalyst and to a manufacturing method thereof. The present invention provides a manufacturing apparatus of a silica-titania catalyst and a manufacturing method of a silica-titania catalyst using the apparatus, the apparatus comprising: a precursor supplying part for vaporizing a silica precursor and a titania precursor and supplying the silica precursor and the titania precursor which have been vaporized to a reaction part; an oxygen supplying line for supplying an oxygen source to the reaction part; the reaction part for synthesizing vaporized products of the silica precursor and the titania precursor supplied from the precursor supplying part in order to generate the silica-titania catalyst; and a recovery part for cooling and condensing the silica-titania catalyst generated in the reaction part in order to recover the silica-titania catalyst. The recovery part includes a cooler for cooling the silica-titania catalyst flowing in from the reaction part, wherein the cooler has a swirl formation portion formed in a flow passage through which the silica-titania catalyst passes. According to the present invention, the silica-titania catalyst which has a high specific surface area, a uniform nanoparticle size and excellent thermal stability can be easily manufactured through a simple process using a chemical vapor condensation method.