Distributed coordination control method of blast furnace system and pressure recovery turbine (TRT) device

A technology of distributed coordination and control method, applied in blast furnaces, blast furnace details, furnaces, etc., can solve the problems of not considering coordination and optimization control, resource waste efficiency, excessive control effect, etc., to achieve the best overall performance, good optimization performance, little control effect

Inactive Publication Date: 2011-04-20
ZHEJIANG UNIV
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Problems solved by technology

The optimal control technologies adopted in the actual ironworks are all researched solely on the blast furnace system or the TRT device itself. They are independent and lack coordination. The input from another system is regarded as a known quantity, which is equivalent to cutting off the mutual The associated coupling effec

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  • Distributed coordination control method of blast furnace system and pressure recovery turbine (TRT) device
  • Distributed coordination control method of blast furnace system and pressure recovery turbine (TRT) device
  • Distributed coordination control method of blast furnace system and pressure recovery turbine (TRT) device

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[0031] Hereinafter, the present utility model will be further explained with reference to the drawings and specific examples.

[0032] The specific steps of the present invention are as follows:

[0033] 1. Description and dynamic modeling of blast furnace system:

[0034] Blast furnace production is a physical, chemical, and kinetic process under high temperature, high pressure, and airtight conditions. As there are many factors that affect the safe and stable production of blast furnaces and increase the output and quality of molten iron, the gas temperature and pressure in the furnace affect each other, and they are closely related to the furnace conditions. As one of the important indicators for measuring blast furnace conditions and molten iron quality, temperature information is mainly obtained from physical temperature (hot metal temperature) and chemical temperature (silicon content in molten iron). Although a large number of thermocouples are installed on the wall and hear...

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Abstract

The invention discloses a distributed coordination control method of a blast furnace system and a pressure recovery turbine (TRT) device, which comprises: establishing association models of a blast furnace system and a TRT device respectively; determining the sampling periods of the blast system and the TRT device by using a distributed coordination control process; optimizing and resolving the two models respectively; and establishing a coordination control mechanism by using a variable-window-length distributed predictive control method so as to realize the coordination control over the blast system and the TRT device. In the invention, through the data interaction by a data server, the data information of associated systems are read; optimization and resolution are performed respectively, so the coordination and optimization calculation amount are reduced greatly; by performing coordination and optimization control over the two systems globally and integrally, the influences of fluctuation in raw material component and other interferences on production operation and product quality produced by perturbation action are relieved effectively, unnecessary energy waste is reduced, the normal temperature distribution in a blast furnace is ensured, and the furnace top pressure is stable; and the TRT device can generate a maximum amount of power, and the two systems operate stably and efficiently.

Description

technical field [0001] The invention relates to energy and power engineering technology, in particular to a method for coordinated optimal control of a blast furnace system and a TRT device. Background technique [0002] The iron and steel industry is an important industry related to the lifeline of the national economy, but the characteristics of high energy consumption and serious pollution of blast furnace smelting affect the sustainable development of the iron and steel industry. Blast furnace smelting is the most energy-consuming part of the ironmaking process, and there are often disturbances and fluctuations in blast furnace smelting, which affect the stability of the blast furnace. Blast furnace smelting is mainly to put sintered ore and coke into the blast furnace, and blow hot air into the blast furnace through the air inlet, and the reducing gas generated in the reaction will reduce the iron element in the ore. Changes in the composition of the ore, changes in th...

Claims

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Application Information

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IPC IPC(8): C21B5/00C21B5/06
Inventor 杨春节肖冬峰沈新荣李敏吴平杨海舟凌飞
Owner ZHEJIANG UNIV
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