An online soft measurement method for the concentration of gas components in the hearth of a residue gasifier

Abstract

The invention discloses an online soft measurement method for gas component concentration in a hearth of a shell residual oil gasification furnace. The established model is based on the characteristicthat fluid in the gasification furnace flows downwards. the reactors are decomposed into ideal series combination of reactors which describe the flow condition of the reactors by plug flow or full mixed flow; mechanism model of the ideal reactor is established by using the kinetic model of the reaction process; real-time data of the gas component concentration in the gasification furnace are obtained through an online solving mathematical model; The method is divided into three parts: an operation data acquisition part, a mathematical model part and an online calculation part, wherein the operation data acquisition part comprises real-time data of acquisition raw material residual oil element analysis and industrial analysis, residual oil and gasifying agent feeding amount and feeding temperature, and gasification furnace structure parameters; The mathematical model part comprises a dynamic mathematical model for establishing a gasification furnace according to gas-solid phase mass, energy and momentum balance in the reactor model; And the on-line calculation part is used for programming calculation by receiving the collected data and outputting the distribution information of thegas components in the furnace.

Description

technical field [0001] The invention belongs to the field of gasification furnace operation parameter monitoring, and in particular relates to an online software for gas component concentration in the furnace chamber of a residual oil gasification furnace for online calculation of important parameters in the furnace based on the operation data collected on the industrial site through an established dynamic model. Measurement methods. Background technique [0002] Crude oil resources around the world are gradually becoming heavier. It is estimated that after 2020, heavy crude oil reserves will account for about 50% of the global recoverable crude oil reserves. Oil refining companies are facing heavy and inferior raw materials and light products. In order to improve the conversion and processing level of residual oil as soon as possible and improve the conversion efficiency of residual oil, it has once again become the focus of attention of refiners. As an important petrochem...

AI Technical Summary

Problems solved by technology

[0004] The content of syngas components in the Shell residue gasifier is one of the most important operating indicators of the gasification system. Timely and accurate information on the concentration of syngas components can guide on-site operations. Currently, the content of gas components in the gasifier It cannot be measured directly. Usually, the crude synthesis gas after being released from the furnace is washed and then sent to chromatographic analysis. The measurement lag affects the production process and the quality of the synthesis gas. Based on the above situation, in order to enable the operator to grasp the reaction status in the furnace in time, adjust the control parameters , to make the gasifier run under good working conditions, to obtain the real-time data of the gas component concentration in the hearth of the residual oil gasifier under the existing production conditions at a relatively low cost has become a technical problem to be solved in the present invention

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