An online soft measurement method for gas component concentration in a hearth of a shell residual oil gasification furnace

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 gasifier operation parameter monitoring, in particular to an online gas component concentration in the furnace chamber of a Shell slag gasification furnace for online solution of important parameters in the furnace through established dynamic models according to the operation data collected on the industrial site Soft measurement method. Background technique [0002] Crude oil resources around the world are gradually becoming heavier. It is estimated that after 2020, the reserves of heavy crude oil will account for about 50% of the recoverable reserves of global crude oil. The pressure of quality and cleanliness, refining process cleanliness and low carbonization, improving the level of residual oil conversion and processing as soon as possible, and improving the efficiency of residual oil conversion have once again become the focus of oil refining enterprises. Residual oil partial oxidation to produce syngas is a...

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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, and to obtain the real-time data of the concentration of gas components in the hearth of the Shell residue gasifier at a lower cost under the existing production conditions has become a technical problem to be solved in the present invention

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