Abstract:
본 발명은 폐플라스틱의 열분해 왁스를 이용한 고형연료 및 그의 제조방법에 관한 것으로, 열분해 반응기(2)에 질소가스(N 2 )로 퍼지시킨 다음 폐플라스틱과 제올라이트(zeolyte Y)촉매를 투입한 후 교반시키면서 200℃ ~ 300℃ 로 가열하여 열분해(thermal cracking)시켜 평균분자량이 약 1500 ~ 2000인 왁스(wax)를 성형시키는 1공정(10)과; 상기 1공정에서 얻어진 왁스에 가연성 배합제를 10wt% ~ 70 wt%로 혼합시킨 후 성형 건조시켜 고형연료를 제조하는 2공정(20);으로 이루어짐으로써 처리 곤란한 폐비닐과 같은 폐플라스틱을 촉매와 함께 비교적 낮은 온도에서 열분해하여 왁스를 제조하고, 제조된 왁스를 결합제(binder)로 하여 오니, 석탄, 톱밥 등의 가연성 배합제와 혼합하여 열량이 높은 고형연료를 저렴한 비용으로 제조할 수 있어 폐자원을 재활용할 수 있고, 환경오염을 줄일 수 있으며, 수거된 장소에서 곧바로 연료화할 수 있어 폐자원의 재활용효율을 극대화시킬 수 있다.
Abstract:
PURPOSE: An electrolytic cell for electrochemical treatment of nitrate-nitrogen containing brine waste is provided to regenerate ion exchange resin of ion exchange tower for removing nitrate-nitrogen, and an apparatus for applying the electrolytic cell is provided. CONSTITUTION: The electrolytic cell is characterized in that an electrode rod(3) on which iridium is coated on titanium is installed in the electrolytic cell, a cylindrical nickel electrode(2) is surrounded on an outer part of the electrolytic cell, suction supporting member(1) and drain supporting member(1') are installed at both sides of the nickel electrode and the electrode rod respectively, a suction port(4) for sucking a regenerated solution from a regenerated solution tank is formed on the suction supporting member, a solution discharge port(6) is formed on the drain supporting member, an anode direct current contact point(5) is installed at one side end of the electrode rod, and a cathode direct current contact point(7) is installed at the nickel electrode.
Abstract:
PURPOSE: Provided are a solid fuel by using wax made by thermal-cracking plastics and a method for preparing thereof, which provide the solid fuel providing high calorie without generating contaminates with moderate cost. CONSTITUTION: The method comprises steps of (a) a first process of after purging N2 gas in a thermal-cracking reactor and putting waste plastics and zeolite Y catalyst therein, thermally cracking it at a temperature of 200-300 °C with stirring to prepare a wax having an average molecular weight of about 1,500-2,000; and (b) a second process after mixing the wax of the step (a) with 10-70 wt.% of a flammable mixing agent, molding and drying the mixture to prepare a solid fuel.
Abstract:
PURPOSE: Provided is a method for fabricating an ion exchange filter being capable of treating VOCs as well as ionized hazardous gases with high efficiency, not causing secondary pollution such as a large amount of wastewater, being regenerable, and being easily produced by a simple process. CONSTITUTION: The method comprises the steps of preparing non woven fabric by mixing carbon fiber and ion exchange fiber, attaching the non woven fabric on the surface of a plastic panel, and assembling an ion exchange filter(7) by stacking a plurality of the non woven fabric panels(3) with supporting bars(4) and inner packings(5) every between the panels(3) and securing the panels(3) together by an external packing(6).
Abstract:
본 발명은 PET(폴리에스터) 올리고머를 메탄올리시스하여, 분리 정제하여 폴리에스터 제조원료인 순수한 디메틸테레프탈레이트(DMT)를 얻는 새로운 방법에 관한 것이다. 본 발명에서는 메탄올리시스 반응기와 증류탑을 일체화시키고 공정의 압력을 전공정에서 DMT의 응고점 이상으로 유지시켜서 공정의 단순화와 DMT의 막힘문제로 인한 조업상의 문제점을 해결한다. 본 발명에 의한 복합장치에 의하면, 증류 작업 중 DMT가 석출되지 않아 조업의 안정성을 높이고, 반응 전환율을 최대화할 수 있기 때문에 반응 수율 및 분리 효율을 높이고 에너지 절약이 가능하게 된다.
Abstract:
본 발명은 유기휘발성분(VOC) 및 이온성 유해가스를 동시에 처리가 가능하도록 한 배기가스 처리 스크러버용 유·무기 복합필터의 제조에 관한 것으로, 그 목적은 종래의 산업 유해가스 처리에 있어 사용하는 습식 및 건식 스크러버 방법에 있어서, VOC 또는 이온성 유해가스등 한종류의 처리에 국한되는 단점이 있고, 습식의 경우 처리후 다량의 폐수가 발생하여 2차 오염이 야기되며, 활성탄과 같은 무기물 흡착제를 사용한 필터는 1회용이고 특히 공정상 압력강하의 단점이 있어, 이들의 단점인 압력강하가 적고 VOC 및 이온성 유해가스를 고효율로 동시에 제거하고, 특히 1회용이 아닌 재생이 가능한 장수명의 배가스 처리 스크러버용 유·무기 복합필터 제조방법을 제공하는데 있다. 본 발명의 구성은 무기흡착제로 활성탄소섬유(ACF) 부직포와 유기흡착제로 섬유상 이온교환체(IXF) 부직포를 일정비율로 혼합한 스크러버 장치에 탈·부착이 간편하도록 만든 신개념의 표준필터이다.
Abstract:
PURPOSE: An apparatus and an operation method thereof are provided to produce dimethyl terephthalate(DMT) and ethylene glycol(EG) as raw materials of a polyester from a polyester oligomer by a methanolysis using a circulation type bubble reactor. The apparatus increases a fractional conversion of the reaction remarkably. CONSTITUTION: The apparatus(9) contains an oligomer sludge supply device, a methanol supply device, and a stirring device(8), wherein a partition(7) is formed in the apparatus(9) on the same axis as the outer wall of the apparatus(9) and a methanol gas dispersing device(6) of the methanol supply device is mounted in the lower part of the partition(7). The stirring device(8) makes the oligomer sludge flow downward in the partition(7), therefore the oligomer sludge flows in the opposite direction to methanol bubbles in the partition(7). The oligomer sludge flows downward inside the partition(7) and flows upward outside the partition(7). And the partition(7) and the methanol gas dispersing device(6) can be mounted repeatedly in the vertical direction.
Abstract:
PURPOSE: A method for preparing a solid fuel by using waste plastic is provided, which is characterized in that waste plastic undergoes thermal cracking at about 250 deg.C after an appropriate amount of a catalyst is added to the waste plastic. CONSTITUTION: The method comprises steps of (a) after adding a catalyst to collected waste plastic, thermal cracking it within at 200 to 250 deg.C to obtain a liquid-phase substance having low molecular weight; and (b) after mixing the liquid substance with a flammable substance at certain mixing ratio, molding the mixture.
Abstract:
PURPOSE: A method for fabricating hybrid ion exchange fiber of adsorbent cake type which separates air pollutants, removes heavy metals from liquid phase waste and recovers valuable metal at high efficiency is provided. CONSTITUTION: The method comprises the processes of crushing ion exchange fiber to a size of 1 to 5 mm; crushing the swollen bead ion exchange body to a certain size by swelling a bead ion exchange body; dispersing the crushed bead ion exchange body into a water based binder added aqueous solution in a ratio of 0 to 30 vol.% for ion exchange fiber; putting the crushed bead ion exchange body dispersed solution into an acryl or glass tube having a certain diameter; removing water from the solution in the acryl or glass tube under the vacuum state of 750 mmHg or less; preparing adsorbent cake by pressing the water removed solution; separating the pressed adsorbent cake, and drying the separated pressed adsorbent cake in a vacuum oven of 60 deg.C for 24 hours, thereby completely removing water from the adsorbent cake.