Safety control method for blast furnace minter process slag treatment granulation water supply system

Abstract

The invention provides a safety control method for a blast furnace minter process slag treatment granulation water supply system. The safety control method comprises the following steps of: (1) setting a system, i.e., presetting the number of working pumps required by normal work and the number of standby pumps required for normal work, presetting each parameter index and presetting duration for each parameter exceeding a preset index range; (2) acquiring a signal; (3) pre-starting state control; (4) controlling an operation state; and (5) ending state control, i.e., closing if an accidental water pipe pneumatic value is in an open state at the end of iron discharge. According to the safety control method, technological actual conditions are closely combined, a key parameter is selected to be monitored in real time, automatic processing is performed on the monitored parameter, double control is performed in pre-starting and operation processes, self-protection of the granulation water supply system is realized, high early warning and accident handling capacities are achieved, the stability of the system is improved, and the operation cost of the system is reduced.

Description

technical field [0001] The invention belongs to the field of blast furnace slag treatment system field, and in particular relates to a safety control method for a blast furnace slag treatment granulation water supply system. Background technique [0002] The granulation water supply system is an important part of the blast furnace slag treatment system. It undertakes the key task of water treatment for the blast furnace slag and is closely related to the safe production of the blast furnace. Once there is a problem in the granulation water supply system, if it cannot be dealt with reasonably or discovered early, it will seriously threaten the production of the blast furnace and cause huge economic losses. Therefore, it is imminent to carry out the necessary safety control on the granulation water supply system. [0003] At present, the granulation water supply system has the following problems: First, due to the lack of necessary analysis of the operating parameters of the ...

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Problems solved by technology

[0003] At present, the granulation water supply system has the following problems: First, due to the lack of necessary analysis of the operating parameters of the granulation water supply pump system, the granulation water supply system cannot detect and prevent the failure of the granulation water supply system in time, so it cannot meet the requirements of the blast furnace Preventive maintenance requirements in continuous production processes

Second, the fault handling and control strategy of the granulation water supply pump set is too simple, which leads to a serious imbalance in the load rate inside the pump set, which increases the operating cost of the system and seriously affects the stability and life of the system

Third, the control sequence of the pneumatic valve of the accident water pipe is unreasonable, and it is difficult to exert the emergency response ability to deal with the accident

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