Detection device for thermal reaction coke formation of heavy oil and online detection method using the device

Abstract

A heavy oil thermal reaction coke formation detection apparatus is characterized in that electrode plates include an upper electrode plate and a lower electrode plate, the kettle cover of a reaction kettle is vertically provided with a support rod, the upper electrode plate and the lower electrode plate are arranged on the support rod, the left electrode and the right electrode of the upper electrode plate are respectively connected with the lower electrode rods of two electrode terminals, and the left electrode and the right electrode of the lower electrode plate are respectively connected with the lower electrode rods of other two electrode terminals. The heavy oil thermal reaction coke formation detection apparatus can be used to carry out online monitoring of electric signals of different positions in a system in the petroleum product thermal reaction process, and determines the thermal reaction coke formation performance of the system according to the difference of the electric signals of different positions in order to determine that whether coking appears in an reactor or not, so the determination is accurate, the error is extremely small, artificial intervention for avoiding coking can be timely carried out, severe problems of pipeline obstruction and production shutdown caused by coke formation are avoided, the change of raw materials does not affect the coke formation performance detection and the determination accuracy, continuous and stable production work of a production device in a running cycle is guaranteed, the production stability is improved, and economic loss is avoided.

Description

technical field [0001] The invention relates to the technical field of electrical measurement, in particular to a detection device for coke formation in thermal reaction of heavy oil that realizes on-line monitoring of system signals during petrochemical production and scientific research, and an on-line detection method using the device. Background technique [0002] In the process of petrochemical production, since the operation cycle of petroleum processing and production equipment is generally one year, the smooth operation of the production equipment is extremely important, but in the production process, coking may occur, and the formed coke will adhere to the production equipment On the inner wall of the reactor, the heat transfer performance of the inner wall will be reduced, the pipeline will be blocked, and even the production will be shut down, which will bring serious safety problems and economic losses. [0003] At present, there is no relevant device for detecti...

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Problems solved by technology

Therefore, judging whether there is coking requires corresponding experience, and there is also a certain risk of misjudgment

On the other hand, the feed properties of the refinery production unit will often change. When the properties of the raw materials change, the reaction performance and the heat absorption performance of the substance will also change. Therefore, to maintain the temperature in the reactor, a corresponding reactor is required. The temperature of the outer wall will also be different. Judging by experience at this time, it is very easy to make a judgment error. For example: the raw material needs to absorb less heat for processing, and the required temperature of the outer wall of the reactor is lower, but coking has actually occurred in the system; Processing requires more heat absorption, and the temperature of the outer wall of the reactor is higher, causing the false impression that the system has been coked

[0004] However, the previous patent application "High Temperature and High Pressure Reactor Electrode and Method for On-Line Monitoring Using the Electrode" (publication number: CN103399060A) can only measure the electrical parameters of petroleum products, and cannot monitor the system during petroleum processing. On-line monitoring of coking performance

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