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NCCU(Non-Capture CO2 Utilization) 기술의 CO2 감축 잠재량 산정
이지현 ( Ji Hyun Lee ),이동욱 ( Dong Woog Lee ),장세규 ( Jang Se Gyu ),곽노상 ( No-sang Kwak ),이인영 ( In Young Lee ),장경룡 ( Kyung Ryoung Jang ),최종신 ( Jong-shin Choi ),심재구 ( Jae-goo Shim ) 한국화학공학회 2015 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.53 No.5
Estimating potential of CO2 emission reduction of non-capture CO2 utilization (NCCU) technology was evaluated. NCCU is sodium bicarbonate production technology through the carbonation reaction of CO2 contained in the flue gas. For the estimating the CO2 emission reduction, process simulation using process simulator (PRO/II) based on achemical plant which could handle CO2 of 100 tons per day was performed, Also for the estimation of the indirect CO2 reduction, the solvay process which is a conventional technology for the production of sodium carbonate/sodium bicarbonate, was studied. The results of the analysis showed that in case of the solvay process, overall CO2 emission was estimated as 48,862 ton per year based on the energy consumption for the production of NaHCO3 (7.4 GJ/tNaHCO3). While for the NCCU technology, the direct CO2 reduction through the CO2 carbonation was estimated as 36,500 ton per year and the indirect CO2 reduction through the lower energy consumption was 46,885 ton per year which lead to 83,385 ton per year in total. From these results, it could be concluded that sodium bicarbonate production technology through the carbonation reaction of CO2 contained in the flue was energy efficient and could be one of the promising technology for the low CO emission technology.
이산화탄소를 활용한 고부가화합물 제조기술의 경제성 평가연구
이지현 ( Ji Hyun Lee ),이동욱 ( Dong Woog Lee ),장세규 ( Jang Se Gyu ),곽노상 ( No Sang Kwak ),이인영 ( In Young Lee ),장경룡 ( Kyung Ryoung Jang ),최종신 ( Jong Shin Choi ),심재구 ( Jae Goo Shim ) 한국화학공학회 2014 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.52 No.3
Economic evaluation of the manufacturing technology of high-value chemicals through the carbonationreaction of carbon dioxide contained in the flue gas was performed, and analysis of the IRR (Internal Rate of Return)and whole profit along the production plan of the final product was conducted. Through a carbonation reaction withsodium hydroxide that is generated from electrolysis and by using carbon dioxide in the combustion gas that is generatedin the power plant, it is possible to get a high value products such as sodium bicarbonate compound and also toreduce the carbon dioxide emission simultaneously. The IRR (Internal Rate of Return) and NPV (Net Present Value)methods were used for the economic evaluation of the process which could handle carbon dioxide of 100 tons per day inthe period of the 20 years of plant operation. The results of economic evaluation showed that the IRR of baseline case oftechnology was 67.2% and the profit that obtained during the whole operation period (20 years) was 346,922 millionwon based on NPV value. When considering ETS due to the emissions trading enforcement that will be activated in2015, the NPV was improved to a 6,000 million won. Based on this results, it could be concluded that this CO2 carbonationtechnology is an cost-effective technology option for the reduction of greenhouse gas.
Indomethacin 이 Sunbutn 에 미치는 영향에 관한 연구
최종성,이유신,김원석 대한피부과학회 1978 大韓皮膚科學會誌 Vol.16 No.3
It is generally recognized that several chemical mediators are involved in tbe pathogenesis of sunbum; however, the exact mechanism is still to he resolved. Recently, prostaglandin has been found to be one of the inflammatory mediators in sunbum, particularly in the delayed erythema response and several investigators have shown that the nonsteroidal antiinflammatory drugs inhibit the in vivo synthesis of prostaglandin. On the assumption that the nonsteroidal antiinflammatory drugs might exert a beneficial effect on the sunbum through the antiprostaglandin effect, several authors have reported the effect of indomethacin on sunbum. This study was undertaken to evaluate the effect of topical indomethacin on the delayed erythema response induced by artificial sunlamp and sunlight by clinical and histopathological examination. Indomethacin(2. 5% ointment, 2. 5% solution, 5% solution) was applied immediately after 3 MED irradiation of artificial sunlamp to the shaved back skin of 6 healthy albino guinea pigs weighing 550-850gm and 9 human volunteers and the delayed erythema response was observed at 2, 4, 6, 12, 24 and 48 hours after irradiation respectively. Punch biopsies of the skin were performed on 6 guinea pigs at 6, 12, 24 a.nd 48 hours after irradiation and the histologic changes were observed. Four human volunters were exposed t,o 3 MED of sunlight and indomethacin preparations were applied immediately after irradiation. The delayed erythema response was observed at 2, 4, 6, 12, 24 and 48 hours postirradiation and in one volunteer, the skin was biopsied at 24 hour for histologi.c evaluation. The results were as follows: 1. Topical indomethacin in ointment or solution forms delayed and decreased the appearance and degree of erythema induced by sunlight and artificial sunlamp in both human and animal subjects. 2. Histologically, the number of sunbum cells at 24 hour in the epidermis of one human volunteer was decreased on indomethacin applied sites. The dermis showe6 no difference in histologic changes between control and indomethacin sitea. In animal study, however, no detectable difference in epidermal or dermal changes was observed between control and indomethacin applied sites. The autors confirmed that topical indometha,cin was effective in delaying and blanching of the delayed erythema of sunbum in guinea pigs as well as in human volunteers, though there was no difference in histologic changes between indomethacin and control sites in guinea pigs. The mechanism involvel on this aspect is remained to be resolved.
수종 피부질환자에서 Clocortolone ( Purantix , Sandoz ) 의 치료효과에 대한 임상적 관찰
최종성,김광중,이유신,김원석,박장규 대한피부과학회 1977 大韓皮膚科學會誌 Vol.15 No.4
Cloeortolone (9-a-chloro-6-a fluoro-11-B 21 digydroxy-16 methyl preganl,4-diene) is a newly synthesized corticonsteroid which has been found to have potent antinflammatory action and good tolerance through animal experiment. Several investigators reported its therapeutic affect in various dermatoses by topical application. The present was undertaken to evaluate the therapeutic effect of 0.1% clocortolone cream (Purantix-Sandoz) in patients with eczematous dermatoses and with psoriasis and to compare its effect with that of I% hydrocortisone. Eleven patients with contact dermatitis, 10 with psoriasis entered this study durtin the period of 6 months from January to june, 1977 at the Department of Dermatology, Seoul National University Hospital. All patients were instructed to apply 0.1% Clocortolone cream on one side of their lesion and 1%hydrocortisone cream on the opposite site for two weeks. After wo weeks' period of observation the status of the lesion was evaluated clinically and the tesults were as follows. 1. Ninety one percent of patiens with contact dermatitis, 70% of atopic dermatitis, 60% of nenrodermatitis, 67% of nummular eczema and 60% of psoriasis responded very effectively or moderately effectively. The therapeutic responses were generally similar to that of 1% hydrocortisone. 2. During the ovservation period, there was no systemic of local side effect of 0.1% Clocortolone cream.
Perifolliculitis Capitis Abscedens et Suffodiens 1 예
최종성,이유신,이철언 대한피부과학회 1976 大韓皮膚科學會誌 Vol.14 No.4
We presented a case of perifolliculitis capitis abscedens et suffodiens associated with acne conglobata in 40-year-old rnale. He had a sausage-shaped plaque containing many fistular tracts on right temnporal area and cicatrizing alopecia on occiput. On the middle portion of upper back he had a adult fist-sized plaque containing many fistular tracts. Histopathologically epidermis showed mild byperkeratosis and keratotic plugging and in the dermis most hair follicles were destroyed and replacel by fibrous tissue but there were moderxte cellular infiltration composed of neutrophils, lymphocytes a.nd hist.iocytes around the remained hair follicles. On serum electrophoresis alpha,-globulin was elevated and gamna globulin was the upper liviit of nornal variation. Skin tests with murnps vaccine, dinitrochloro benzene (DNCB) and old tuberculin disclosed the evidence of de reased c $quot;ll-mediated immunity(CMI). All th se findings suggest thzt immune rriechanisni r,-ay be concerned ivith the pathogenesis in this case. He was treated with th internal administration of antibiotic and corticosteroid and with surgical opening and curettage of fistular tracts.