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:
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