Operation monitoring method and system of heating furnace

Abstract

The invention belongs to the technical field of cracking reaction monitoring and relates to an operation monitoring method and system of a heating furnace in order to solve the problems that the outlet temperature deviation of an existing heating furnace is large and monitoring results cannot accurately reflect the actual operation conditions of a single cracking furnace tube in the heating furnace along with the reaction time in the operating process in time. The operation monitoring method comprises the following steps of acquiring the temperature value of an outlet section of each crackingfurnace tube at different moments and obtaining the average temperature value of the outlet sections of all the cracking furnace tubes at the corresponding moment; calculating the temperature difference between the temperature value of the outlet section of each cracking furnace tube and the average temperature value at the corresponding moment; calculating the difference value between two temperature difference values at different moments; and representing the operation conditions of each cracking furnace tube along with the cracking reaction time according to the difference value. Through the operation monitoring method and system of the heating furnace, the operation conditions of the single cracking furnace tubes in the heating furnace along with the reaction time can be accurately reflected in time, and an accurate basis is provided for optimized operation of the heating furnace.

Description

technical field [0001] The invention relates to the technical field of cracking reaction monitoring, in particular to an operation monitoring method and system of a heating furnace. Background technique [0002] The outlet temperature of the cracking furnace tube is the main indicator of the cracking reaction, and its change directly reflects the depth of the cracking reaction and the operating conditions of the cracking furnace or heating furnace. It is known that when the heating furnace type is fixed, the furnace tube arrangement and geometric parameters have been determined. At this time, for a given cracking raw material and load, the furnace outlet temperature can represent the cracking depth to a certain extent, which is used for Differentiate between shallow, medium and deep cracking, the higher the temperature, the greater the cracking depth. [0003] At present, the furnace tube mostly uses the monitoring tube wall temperature to predict the outlet temperature, bu...

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Problems solved by technology

[0006] Due to the fluctuation of various factors in the operation process and the imperfection of hardware, the temperature of each furnace tube will be unique, and the results of traditional monitoring methods cannot accurately reflect the temperature of each cracking furnace in the heating furnace. The behavior of the tubes over the reaction time affects the optimal operation of the furnace

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