TRT coordination control method and system

Abstract

The invention discloses a TRT (Blast Furnace Top Gas Recovery Turbine Unit) coordination control method and system. The method comprises the following steps of: collecting the top pressure signal, the furnace condition information and the gas flow signal of a blast furnace; determining the conditions of the blast furnace by a PLC (Programmable Logic Control) system according to the top pressure signal, the furnace condition information and the gas flow signal, and then carrying out step-by-step regulation control of the TRT unit. According to the invention, the automatic protection control idea of the blast furnace fault bypass is adopted, and the all-weather operation of the TRT unit is guaranteed during the running of the blast furnace through coordinating and ordered cooperation and adjustment between a stationary blade, a bypass valve and a blast furnace pressure reducing valve bank; when the top pressure of the blast furnace is higher than the predetermined value, the TRT unit does not stop; at the same time when the stationary blade of the TRT unit is under adjustment control, the bypass joins in the adjustment control to split the gas flow which is turbined through the TRT unit; therefore, the TRT unit is protected, the top pressure of the blast furnace is guaranteed to be stable and continuous power generation of the TRT unit is effective ensured.

Description

technical field [0001] The present invention relates to the technical field of automatic control, and more specifically, relates to a TRT coordinated control method and system. Background technique [0002] TRT, the full name of blast furnace gas residual pressure energy recovery turbine power generation device, is an energy recovery device that uses the blast furnace roof to discharge blast furnace gas with a certain pressure and temperature, pushes the turbo expander to rotate and do work, and drives the generator to generate electricity. By recovering the pressure energy and heat energy contained in the blast furnace gas, the purpose of energy saving, noise reduction and environmental protection is achieved. It has good economic and social benefits. It is an energy-saving and environmental protection device recognized by modern domestic and international iron and steel enterprises. [0003] In the traditional control mode, the top pressure of the blast furnace is controll...

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a TRT coordinated control method and system to overcome the problem in the prior art that the top pressure will be 5kPa higher than the set value of the top pressure. The axial thrust of the unit is too large, and at the same time, the top pressure cannot be adjusted quickly. In severe cases, it may cause damage to the unit, shutdown of the blast furnace, and is not conducive to the formation of the blast furnace and other serious consequences.

Images