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양상중질유를 원료로한 신제품 개발실용화를 위한 조사연구
김주항,허동섭,강호근 한국고무학회 1985 엘라스토머 및 콤포지트 Vol.20 No.2
Heavy residual fuel oils is a mixture of reduced crude from crude unit, bottom products from vacuum and/or catalytic cracking unit with distillate to meet the specification and generally used as heavy fuel oil for large combustion engines, boilers, etc…. But this study was made to investigate heavy residual fuel oils for using as industrial raw material and resulted the following possiblities as valuable raw material as well as heavy fuel oil. 1) Production of straight asphalt through vacuum distillation unit. 2) Using straight asphalt from vacuum distillation unit for manufacturing of blown asphalts, cut back asphalts, emulsified asphalts and asphalt compound, rubber/asphalt sheet, etc…. 3) Using waxy oil side streams for manufacturing of raw oil to be lube oil base stocks through solvent dewaxing. 4) Production of lube base oils and rubber process oils from dewaxed raw oil through chemical treatments, 5) Manufacturing of paraffine wax from slack wax to be produced as by product of dewaxing process.
김주항 한국기술사회 1985 技術士 Vol.18 No.2
A new process disregraded the H$_2$SO$_4$ treatment process heretofore in use, was developed and substituted for mineral base engine used oil of homemade SAE-30 grade H.V.I., which was used covering 4,500km, as samples, and the following results in research, was obtained. (1) A good quality of rerefinded base oil was obtained through roughly a course of developed processes of vacuum distillation process, solvent extraction process, neutralization treatment process and clay treatment process. (2) Through vacuum distillation process, the size of fine grains of insoluble colloid carbon that is, colloid carbon which was produced by burning of internal combustion engine oil and fuel, could be brought up and precipitated (3) The insoluble matters and admixtures could be easily dispersed and dissolved by mixing and extracting solvent disregarded the H$_2$SO$_4$ treatment process heretofore in use (4) waste matter heretofore called acid sludge in consequence of the process, did not appear at all. accordingly, the environmental pollution could be removed. (5) The troubles of corrosion to copper strip which was faults of the usual used oil refined products and peculiar offensive odor of the rerefined oil, could be solved through the neutralization process. (6) The yield of rerefined oil obtained through a course of processes was over 86 percent, and it is of practical use, not to speak of commercial value.
김주항,김현만,허갑범,이현철,김세광,황용,임승길,박용원 대한내과학회 1986 대한내과학회지 Vol.30 No.1
Two patients with metastatic choriocarcinoma had palpitation, dyspnea, and warm moist skin without goiter or exophthalmos. We performed thyroid function test which revealed markedly elevated levels of triiodothyronine, thyroxine and free thyroxine without the elevation of thyroid stimulating hormone. The improvement of hyperthyroidism closely paralleled the fall in human chorionic gonadotrophin (HCG) levels after anticancer chemotherapy. Recently evidence has been presented that HCG has intrinsic thyrotropic activity. It is considered that the development of biochemical and clinical hyperthyroidism in patients with choriocarcinoma depends upon the levels of HCG and the duration of the choriocareinoma.