Direct coal liquefaction reaction kinetic model modeling method

Abstract

The invention provides a direct coal liquefaction reaction kinetic model modeling method. The method comprises the steps that S1, feed coal, intermediate products in a direct coal liquefaction reaction and liquefied oil are divided into 11 lumps; S2, according to the mechanism of the direct coal liquefaction reaction, a reaction network is built; S3, a direct coal liquefaction reaction model differential equation is built according to the reaction network; S4, the direct coal liquefaction reaction model differential equation is solved, and various parameters in the direct coal liquefaction reaction model differential equation are determined and estimated; S5, a prediction correlation model of gas components in reaction products of direct coal liquefaction and a liquefaction oil narrow fraction prediction correlation model are built. The method can be used for analog computation of the direct coal liquefaction reaction, and is high in precision, the process simulation of the direct coal liquefaction reaction stage is closer to an actual reaction, and therefore the components of reaction liquefied oil and gas can be predicted accurately.

Description

technical field [0001] The invention relates to the technical field of direct coal liquefaction, and more specifically, relates to a modeling method for a reaction kinetic model of direct coal liquefaction. Background technique [0002] Coal direct liquefaction is an advanced clean coal technology that converts solid coal into liquefied fuel by using hydrogen-donating solvents and catalysts to allow hydrogen to enter the molecular structure of coal and its derivatives under high temperature and high pressure. Through direct coal liquefaction, not only gasoline, diesel, liquefied petroleum gas, and jet fuel can be produced, but also BTX (benzene, toluene, xylene) can be extracted and raw materials for the production of important olefins such as ethylene and propylene. [0003] According to relevant statistics, in 2008, China's coal output was as high as 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 ...

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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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