Method of estimating reaction product in coal liquefying reaction

A method of estimating the effluent amount for each component of the effluent of a coal liquefying reaction vessel, comprising the steps of:

• assuming the effluent amount for each component of the effluent so as to calculate a gas-liquid equilibrium composition within the reaction vessel of a mixture of the composition;
• further calculating the volume flow rates of a gaseous phase and a liquid phase within the reaction vessel;
• calculating the residence time of the gaseous phase and the liquid phase within the reaction vessel on the basis of the gas hold up within the reaction vessel calculated from the volume flow rate and the empirical formula;
• calculating the effluent amount for each component of the effluent on the basis of a primary irreversible reaction rate formula derived from the residence time within the reaction vessel, the inflow amount for each component of the influent into the reactor, and a coal liquefying reaction model;
• comparing the effluent amount for each component assumed first with the effluent amount for each component obtained by calculation;
• and
• repeating the series of calculations until the two effluent amounts for each component are allowed to coincide with each other for each component within a range of error.

A method of estimating a reaction rate constant for a coal liquefying reaction in a vessel column reactor having an N-number of vessels on the basis of the actually measured value of the effluent amount for each component of the N-th vessel of the vessel column reactor, comprising the steps of:

• assuming a reaction rate constant;
• successively calculating the effluent amount for each component of the effluent from each vessel until the N-th vessel by using the assumed reaction rate constant;
• comparing the calculated value of the effluent amount for each component of the N-th vessel with the actually measured value;
• and
• repeating the series of calculations until these two sets of the effluent amounts for each component are allowed to coincide with each other within a range of error.

A method of estimating the reaction rate constant of the coal liquefying reaction in a vessel column reactor having an N-number of vessels on the basis of the actually measured value of the effluent for each component of the N-th vessel of the vessel column reactor, comprising the steps of:

• assuming a reaction rate constant;
• successively calculating the effluent amount for each component of the effluent from each vessel until the N−1-th vessel by using the assumed reaction rate constant;
• newly calculating a reaction rate constant on the basis of the effluent amount for each component of the N−1-th vessel and the effluent amount for each component of the N-th vessel;
• comparing the reaction rate constant assumed first with the reaction rate constant newly obtained by calculation;
• and
• repeating the series of calculations until these two sets of reaction rate constants are allowed to coincide with each other for each reaction rate constant within a range of error.

A method of estimating the effluent amount for each component of an effluent at the outlet of a reaction vessel in which a hydrogen gas is blown into a coal slurry for carrying out a liquefying reaction, comprising the steps of:

• assuming the effluent amount for each component of the effluent in accordance with a coal liquefying reaction model set in advance in respect of each of a plurality of kinds of coal slurries differing from each other in the degree of coalification and calculating the residence time in the reaction vessel for each of a gaseous phase and a liquid phase within the reaction vessel;
• calculating the effluent amount for each component of the effluent on the basis of the residence time in the reaction vessel, the inflow amount for each component of the influent into the reaction vessel, and a primary irreversible reaction rate formula derived from the coal liquefying reaction model;
• obtaining a reaction rate constant of the primary irreversible reaction rate formula, which permits the calculated effluent amount for each component and the assumed effluent amount for each component to coincide with each other within a range of error;
• and
• obtaining a formula showing the relationship between the reaction rate constant and the component of the coal on the basis of the reaction rate constant obtained for each kind of coal and each component of each kind of coal, followed by calculating the reaction rate constant of liquefying the coal on the basis of each component of the coal that has been liquefied and the formula showing the particular relationship, thereby estimating the effluent amount for each component of the effluent on the basis of the coal liquefying reaction model.