Kinetic Modeling Method for Direct Coal Liquefaction Reaction

Abstract

The invention provides a coal direct liquefaction reaction kinetic model modeling method. The method includes: step S1: dividing raw coal, intermediate products of direct coal liquefaction reaction and liquefied oil into 11 aggregates; step S2: constructing a reaction network according to the reaction mechanism of direct coal liquefaction; step S3: establishing a reaction network according to the reaction network Coal direct liquefaction reaction model differential equation; Step S4: Solve the coal direct liquefaction reaction model differential equation, determine the parameters in the coal direct liquefaction reaction model differential equation and estimate each parameter; Step S5: Establish the coal direct liquefaction reaction product internal Gas component prediction correlation model and liquefied oil narrow fraction prediction correlation model. The invention can be used for the simulation calculation of the direct coal liquefaction reaction, and has high precision, so that the flow simulation of the coal direct liquefaction reaction stage is closer to the actual reaction, so that the composition of the reaction liquefied oil and gas can be accurately predicted.

Description

Technical field [0001] The invention relates to the technical field of direct coal liquefaction, and more specifically, to a method for modeling a direct coal liquefaction reaction kinetic model. Background technique [0002] Direct coal liquefaction is an advanced clean coal technology that uses hydrogen supply solvents and catalysts to make hydrogen enter the molecular structure of coal and its derivatives under high temperature and pressure, thereby converting solid coal into liquefied fuel. Direct coal liquefaction can not only produce gasoline, diesel, liquefied petroleum gas, jet fuel oil, but also extract BTX (benzene, toluene, xylene) and produce ethylene, propylene and other important olefin raw materials. [0003] According to relevant statistics, in 2008, China's coal output reached 2.793 billion tons, 4.52 times that of 618 million tons in 1978, accounting for 42% of the world's coal output in 2008, and the increase in production accounted for more than 80% of the world...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a modeling method for the direct coal liquefaction reaction kinetic model to solve the problem that the lumped division of the coal direct liquefaction reaction kinetic model modeling method in the prior art cannot accurately predict the coal direct liquefaction reaction liquefied oil, The question of the composition of the gas

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