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Fresh catalyst particles are added to a slurry hydrocarbon synthesis reactor and their activity increased by contact with hydrogen in-situ in the slurry in a catalyst activity increasing means, while the reactor is producing hydrocarbons. The means may be a simple, vertically oriented and hollow tub

Fresh catalyst particles are added to a slurry hydrocarbon synthesis reactor and their activity increased by contact with hydrogen in-situ in the slurry in a catalyst activity increasing means, while the reactor is producing hydrocarbons. The means may be a simple, vertically oriented and hollow tube, open at the top and bottom, into which slurry and a hydrogen treat gas are passed. The treat gas acts as a lift gas which provides slurry circulation into and out of the means and back into the slurry body, while increasing the activity of the catalyst particles. During the activity increase of the fresh catalyst, partially and reversibly activated catalyst particles are rejuvenated. The activity increasing means may be inside the reactor and at least partially immersed in the slurry or external of the reactor, or both.

대표청구항 ▼

Fresh catalyst particles are added to a slurry hydrocarbon synthesis reactor and their activity increased by contact with hydrogen in-situ in the slurry in a catalyst activity increasing means, while the reactor is producing hydrocarbons. The means may be a simple, vertically oriented and hollow tub

Fresh catalyst particles are added to a slurry hydrocarbon synthesis reactor and their activity increased by contact with hydrogen in-situ in the slurry in a catalyst activity increasing means, while the reactor is producing hydrocarbons. The means may be a simple, vertically oriented and hollow tube, open at the top and bottom, into which slurry and a hydrogen treat gas are passed. The treat gas acts as a lift gas which provides slurry circulation into and out of the means and back into the slurry body, while increasing the activity of the catalyst particles. During the activity increase of the fresh catalyst, partially and reversibly activated catalyst particles are rejuvenated. The activity increasing means may be inside the reactor and at least partially immersed in the slurry or external of the reactor, or both. n Prostaglandins, Leukotrienes and Cancer, vol. 4 ( Honn and Marnett eds) Martinus-Nijhoff Press, 1985. Narumiya et al. Site and mechanism of growth inhibition by prostaglandins. I. Active transport and intracellular accumulation of cyclopentenone prostaglandins, a reaction leading to growth inhibition. J Pharmacol Exp Ther. 1986 Nov;239(2):500-5. Narumiya and Fukushima, Cyclopetenone prostaglandin: anti-proliferative and anti-viral actions and their molecular mechanism. 1stInternational Conf. Detroit, Eicosanoids and Bioactive Lipids in Cancer & Radiation Injury 1989. Ohno et al. Metabolic dehydration of prostaglandin E2 and cellular uptake of the dehydration product: correlation with prostaglandin E2-induced growth inhibition. Biochem Biophys Res Commun. Sep. 14, 1986;139(2):808-15. Osato et al. Experimental chemotherapy of cancer in rat with citral-combinations. Gann, 1953; 44:348-53 (in Japanese with English abstract). Santoro et al. Inhibition of tumour growth in vivo and in vitro by prostaglandin E. Nature. Oct. 28, 1976;263(5580):777-9. Santoro et al. Prostaglandin A1 induces the synthesis of a new protein in cultured AGMK cells. Biochem Biophys Res Commun. Aug. 31, 1982;107(4):1179-84. Santoro et al. Inhibition of virus protein glycosylation as the mechanism of the antiviral action of prostaglandin A in Sendai virus-infected cells. J Gen Virol. 1989 Apr;70 ( Pt 4):789-800. Santoro et al. Inhibition of B-16 melanoma growth in vivo by a synthetic analog of prostaglandin E2. Canc