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Comprehensive control method for heating furnace outlet temperature and device thereof

A technology of comprehensive control of outlet temperature, applied in the field of comprehensive control method and device, comprehensive control method and device of heating furnace outlet temperature, capable of solving problems such as deviation

Inactive Publication Date: 2004-07-07
锐齐思市场策划(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for systems with strong nonlinearity, the linearization method often produces large deviations, and even draws completely opposite conclusions.

Method used

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  • Comprehensive control method for heating furnace outlet temperature and device thereof
  • Comprehensive control method for heating furnace outlet temperature and device thereof
  • Comprehensive control method for heating furnace outlet temperature and device thereof

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Experimental program
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Embodiment Construction

[0058] Hereinafter, the present invention will be described in detail by taking the comprehensive control system adopted by the waste liquid heating furnace of the furfural refining device in the petroleum processing plant as an example.

[0059] Such as figure 2 As shown, the comprehensive control system for the outlet temperature of the heating furnace includes: furnace tube 21, furnace feed quantity control system I, furnace and furnace outlet temperature control system II and fuel oil and / or gas pressure control system III, The output signal of the furnace feed rate control system is transmitted to the furnace and furnace outlet temperature control system, and the output signal of the fuel oil and / or gas pressure control system is transmitted to the furnace and furnace outlet control system, wherein,

[0060] Furnace feed amount control system 1 comprises: furnace feed amount orifice plate 9, feed amount flow transmitter 10, tower liquid level transmitter 17, liquid level...

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Abstract

A comprehensive control method for the temp at the outlet of heating furnace includes the control to the temp of combustion box and the outlet temp of heating furnace by additionally using a pure lagging link between flow regulator and flow regulating valve to eliminate interference and the control to the pressure of fuel oil and / or gas by Bang-Bang+PI dual-model control method. Their signals are transmitted to computer, where they are processed by CALC software to output the signals acting on the gas regulating valve of output temp control system.

Description

1. Technical field [0001] The invention relates to a comprehensive control method and device, in particular to a comprehensive control method and device for the outlet temperature of a heating furnace, belonging to the technical field of automatic control. 2. Background technology [0002] At present, in the petrochemical production process, the tubular heating furnace is one of the main process equipment, hereinafter referred to as the heating furnace. Such as figure 1 Shown is the comprehensive control system of the existing heating furnace, which generally includes the furnace feed rate control system I, the furnace and furnace outlet temperature control system II, and the fuel oil and / or gas pressure control system III. There is no direct and organic connection between the furnace feed control system I and the furnace and furnace outlet temperature control system II. The temperature control requirements at the outlet of the heating furnace...

Claims

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Application Information

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IPC IPC(8): F24H9/20
Inventor 罗欣
Owner 锐齐思市场策划(北京)有限公司
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