High-cost performance system for controlling combustion redundancy of coal-fired heat transfer material heater

Abstract

The invention discloses a high-cost performance system for controlling combustion redundancy of a coal-fired heat transfer material heater, which relates to the technical field of DCS industrial control systems, in particular to the system for controlling the combustion redundancy of the coal-fired heat transfer material heater of a large-scale chain coal bed. The system comprises a PLC, an operation management system, a frequency conversion control technical system and a conventional electric control system. The combustion control and the heating circulation control of the control system areensured by two sets of control systems and bumpless control right transfer is realized, and the two sets of systems have low cost and high cost performance, and ensure the safety and the reliability of heat medium heater control system; a humanized operator interface is adopted and an expert diagnostic system is provided; and control software is designed with a standardized, functionalized and modularized structure and has easily expanded functions, add programs and adjust parameters. The system ensures the safe production of a heat medium heater, heat medium temperature control accuracy and the probability of improving the combustion efficiency of fire coal, and has good control effect and relatively lower running cost.

Description

technical field [0001] The invention relates to the technical field of DCS industrial control systems, in particular to a redundant combustion control system of a large-scale chain coal seam heat carrier furnace (referred to as "heat medium furnace"). Background technique [0002] As a large-scale heating equipment, large-scale heat carrier furnaces (referred to as "heat medium furnaces") are widely used in many industries such as chemical industry, petrochemical industry, metallurgy, textile, and plastics. The rapid development of industry is inseparable from heating equipment. Therefore, there is a relatively large market demand for heat conversion equipment such as large-scale heat medium furnaces. [0003] Coal-fired heat medium furnace is a kind of coal-fired furnace (fired in the coal seam of the grate chain), which uses heat transfer oil as the heat carrier (referred to as the heat medium). Continue to return to the once-through special industrial furnace for reheati...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the high cost of the above-mentioned conventional redundant system, or the failure to protect and the combustion control of the coal-fired heat medium furnace are difficult for the faults other than the CPU module. When the thermal load requires higher temperature accuracy, the temperature control The accuracy is difficult to achieve; the combustion is not sufficient, the combustion efficiency is low, and the unburned coal ash is discharged with the flue gas, which will cause serious pollution to the environment. The automatic control system of the coal-fired heat medium furnace proposed

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