Crude oil heating furnace and control system thereof

Abstract

The invention provides a crude oil heating furnace and a control system thereof. A gas adjusting control system and an excess air coefficient control system are included. The heating manner of the control system is used for indirectly heating crude oil of a cylindrical water jacket, the control manner of a PLC automatic control system and a remote work station connected with the PLC control systemis adopted, the technical problems that in the prior art, control is carried out only according to a crude exportation temperature signal, the control delay degree of a water jacket heating furnace is high, adaptation to the unstable working condition is weak, the actual excess air coefficient cannot be effectively controlled, the existing single-loop control scheme is low in control precision, time delay degree is high, the oil outlet temperature fluctuation is large, and the crude oil outlet temperature of a heating furnace cannot be precisely controlled are solved, through combination of agas flow feedforward prognosis adjusting and feedback adjusting, the crude oil outlet temperature control low delay, low energy consumption, low pollution and high-precision needs are achieved, and the excess air coefficient is effectively controlled.

Description

technical field [0001] The invention belongs to the field of crude oil pretreatment, and in particular relates to a crude oil heating furnace and a control system thereof. Background technique [0002] The heating furnace is one of the main energy-consuming equipment in the joint station. It is used to heat the crude oil to facilitate transportation and other production processes. At room temperature, the crude oil has high viscosity and poor fluidity, which is not conducive to long-distance transportation. Temperature, after crude oil is heated, its viscosity decreases and its fluidity increases, which is beneficial to oil transportation; however, crude oil is prone to cracking when the heating temperature is too high (generally >150°C), so the export oil temperature needs to be strictly controlled. The existing single-loop control scheme adopts two-stage regulation of large and small fires, which has low control accuracy, high time delay, and large fluctuations in oil o...

AI Technical Summary

Problems solved by technology

This technology can control the furnace temperature and furnace pressure in real time according to the heating temperature of each section, thereby improving the utilization rate of heating, and at the same time, it has also shown results in energy saving and consumption reduction. However, this technology has not established a predictive adjustment for unstable working conditions mechanism, which cannot meet the requirement of low retardation in the heating process of crude oil

South China University of Technology has carried out the design of computer automatic control system for water jacket furnace heating, using industrial computer and industrial control module components to control the burner, realizing constant temperature, unattended, high-precision automatic control mode, thereby increasing the temperature of crude oil gathering and transportation The high control accuracy eliminates safety hazards and improves production management efficiency; however, this control scheme still only controls based on the pure crude oil output temperature signal, and also fails to solve the problem of high control delay of the water jacket heating furnace, and for Weak adaptability to unstable working conditions

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