Method for increasing running energy efficiency of BPRT (blast furnace power recovery turbine) system
An energy-efficient and functional technology, applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problems of low efficiency and affect the energy utilization efficiency of BPRT system, and achieve the effect of reducing errors, facilitating operation management and optimizing operation
Active Publication Date: 2014-11-12
HANGZHOU ZETA TECH
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Problems solved by technology
[0005] At present, the BPRT system simply drives the turbine and the blower coaxially. The energy efficiency of the turbine has not been optimized, and it is often at a low point of efficiency, which affects the energy utilization efficiency of the BPRT system.
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[0037] First of all, it should be explained that the present invention relates to the application of software function modules built in computers, and is an application of computer technology in the field of control technology. The applicant believes that, after carefully reading the application documents and accurately understanding the realization principle and purpose of the present invention, combined with existing known technologies, those skilled in the art can fully implement the present invention by using their software programming skills. The aforementioned software function modules include but are not limited to: energy efficiency calculation module, first-order lag filter algorithm module, etc. All mentioned in the application documents of the present invention belong to this category, and the applicant will not list them one by one.
[0038] Basic principle of the present invention is:
[0039] First of all, by collecting and processing the parameters during the op...
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The invention relates to energy efficiency analysis technology, and aims to provide a method for increasing running energy efficiency of a BPRT (blast furnace power recovery turbine) system. The method includes (1) gradually adjusting opening of a butterfly valve of an inlet of a turbomachine under the condition that coal gas flow is not changed, and selecting the opening of the butterfly valve when the current of a motor is the lowest or energy efficiency of the turbomachine is the highest as the best opening; (2) changing a coal gas flow condition, repeating the experiment, and building a mathematical model of the corresponding relation of coal gas flow and the opening of the butterfly valve; and (3) obtaining the corresponding best opening of the butterfly valve of the inlet via the mathematical model according to the coal gas flow in a running process of the BPRT system, controlling the butterfly valve of the inlet of the turbomachine according to the best opening, and accordingly realizing that the BPRT system runs in an energy efficiency optimum state. The method can be used for people to comprehensively know running conditions of the turbomachine, effectively reduces errors of energy efficiency calculation data due to noise caused by sampling, calculates the opening of the butterfly valve of the inlet in an optimizing manner, and improves the energy efficiency of the BPRT system.
Description
technical field [0001] The invention relates to a method for improving the operating energy efficiency of a blast furnace gas energy recovery system (Blast Furnace Power Recovery Turbine, BPRT for short) of a turbine coaxially driving a blower. More specifically, it is aimed at optimizing the energy efficiency of the BPRT system of the ironmaking blast furnace. Background technique [0002] The metallurgical process industry is not only a producer of energy and various raw materials, but also a major consumer of energy, so energy saving and consumption reduction are very important. The comprehensive energy consumption level of my country's metallurgical industry is much higher than the global average level. [0003] Ironmaking system is a general term for coking, sintering, ironmaking and other processes. The energy directly consumed by the system accounts for about 70% of the total energy consumption of the iron and steel complex, which is the focus of energy conservation...
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IPC IPC(8): F01D17/00C21B5/06
Inventor 吴平杨春节麻剑锋王小华郁辉球黄龙诚
Owner HANGZHOU ZETA TECH