Control method for improving blast furnace trt one-time start-up success rate
A control method and one-off technology, applied in the field of industrial equipment control, can solve the problems of low one-time startup success rate and damage to unit equipment, and achieve the effect of reducing damage and improving the success rate
Active Publication Date: 2016-01-20
PANGANG GRP PANZHIHUA STEEL & VANADIUM
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Problems solved by technology
[0011] The technical problem to be solved by the present invention is to propose a control method for improving the success rate of one-time start-up of blast furnace TRT to solve the problem of low one-time start-up success rate of blast furnace TRT unit in the traditional technology, which requires multiple starts and is easy to cause damage to the unit equipment question
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Experimental program
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Effect test
Embodiment Construction
[0017] The present invention aims to propose a control method for improving the success rate of one-time start-up of blast furnace TRT, so as to solve the problem of low one-time start-up success rate of blast furnace TRT unit in the traditional technology, requiring multiple starts and easily causing damage to unit equipment.
[0018] The TRT control process is divided into TRT start-up process, normal operation process, and TRT shutdown process. Among them, the start-up process is the most complicated. The start-up process is firstly the speed control, and then it is switched to power control after it is connected to the Internet. After the power increase is completed, it enters the top pressure control. The speed control, power control, and top pressure control are all realized through the adjustment of the turbine stator blades. How to coordinate the relationship between them during the start-up process is the key to improving the success rate of TRT start-up.
[0019] In t...
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The invention relates to the field of control of industrial equipment, and discloses a control method for increasing the one-time start-up success rate of a TRT (Blast Furnace Top Gas Recovery Turbine Unit), solving the problems in the prior art that a TRT unit has low one-time start success rate and is easily damaged due to multiple times of starting. The control method comprises the steps: additionally arranging a pneumatic regulating valve at a turbine inlet electric butterfly valve in a parallel-connection manner to serve as a starting valve, after carrying out impulse-starting on a turbine to a certain rotation speed by the starting valve when the TRT is just started, regulating the speed in cooperation with a stationary guide blade of the turbine, and controlling the vibration of the turbine in the period not to exceed the standard to play a role in controlling the rotation speed in an assisting manner; in a power raising link, with blast furnace top pressure adjustable maintenance as a priority condition, when the furnace top pressure adjustment deviation is more than an allowable value, maintaining a current openness by a stationary guide blade, waiting, and when the top pressure adjustment deviation is within the allowable value, performing power raising adjustment. The control method is suitable for start control of the TRT.
Description
technical field [0001] The invention relates to the field of industrial equipment control, in particular to a control method for improving the one-time start-up success rate of a blast furnace TRT. Background technique [0002] Blast furnace gas residual pressure turbine power generation device (TRT for short) is a major energy-saving device recognized at home and abroad for metallurgical enterprises. It is an energy recovery device that uses the residual pressure and residual heat of the blast furnace top gas to guide the gas into a turbo expander, convert the pressure energy into mechanical energy, and drive the generator to generate electricity. [0003] In recent years, the operation of blast furnace TRT is not good, and a series of problems have been exposed. The main manifestations are: the unit startup often has a low one-time startup success rate, which affects the stable operation of the dry dust removal and TRT system, and restricts the power generation of TRT. , ...
Claims
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IPC IPC(8): C21B5/06
Inventor 朱雪莲邓林万利平谭德强
Owner PANGANG GRP PANZHIHUA STEEL & VANADIUM