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

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...

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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 effect of the local system is optimized and controlled in isolation, without considering the coordinated optimization control with related processes. Optimum for the entire blast furnace system and TRT device), it will lead to excessive control action, affecting normal production, resulting in waste of resources and low efficiency

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