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Asahi Kasei Kogyo Kabushiki Kaisha

Asahi Kasei Kabushiki Kaisha

Kunihiro Imada

Kenji Inokuchi

Tadashi Kai

Masaaki Sakurai

Yuji Matsue

Masatoshi Kobayashi

Hidenobu Itoh

Akira Kidoguchi

Yasuki Namiki

Masataka Hiraide

Disclosed is a method of estimating the outflow amount for each component of the effluent of a coal liquefying reactor consisting of vessel type reactors ( ) operated under a high temperature and a high pressure. The outflow amount for each component of the effluent is assumed, and the gas-liquid equilibrium composition of the mixture of the composition within the reaction vessel is calculated. Further, the volume flow rates of the gaseous phase and the liquid phase within the reaction vessel are calculated, and the residence time (&tgr; G, &tgr; G, &tgr; G), (&tgr; S, &tgr; S, &tgr; S) of each of the gaseous phase and the liquid phase is calculated on the basis of the gas hold-up within the reaction vessel calculated on the basis of the volume flow rate and the empirical formula. The outflow amount for each component of the effluent is calculated on the basis of the residence time (&tgr; , &tgr;, . . . &tgr;n) within the reaction vessel, the inflow amount for each component of the influent into the reactor, and the primary irreversible reaction rate formula derived from a specified coal liquefying reaction model. The effluent amount for each component assumed first is compared with the effluent amount for each component obtained by calculation, and the series of calculations are repeated until these two effluent amounts for each component coincide with each other within a predetermined range of error.

Method of estimating reaction product in coal liquefying reaction

The invention provides an iron sulfide characterized in that it comprises FeS,, Fe,S, Fe,O,and FeSO,, and that the secondary particles thereof, have a 50% volume-cumulative particle diameter of from 20 to 300 &mgr;m. The invention also provides a process for producing an iron sulfide comprising the steps of introducing (a) ferrous sulfate monohydrate having a d,of from 20 to 300 &mgr;m and (b) not less than stoichiometric amount of at least one sulfur compound selected from elemental sulfur and hydrogen sulfide into the fluidized bed of a furnace and then fluidizing, burning, and reacting the ingredients at a temperature of from 350 to less than 630&deg; C., a superficial velocity of 0.1 m/sec or higher, and a pressure of 1 atm or higher using air as a fluidizing gas. The present invention is useful, for example, in a process of coal liquefaction or heavy-oil hydrocracking.

Iron sulfide and process for producing the same

Growing community of inventors

Kimitsu, Japan

Kunihiro Imada