Control method and system for reducing furnace

A control system and control method technology, applied in the direction of furnace control devices, furnaces, furnace components, etc., can solve problems such as abnormal shutdown of reduction furnaces, and achieve the effect of avoiding current fluctuations or shutdowns
CN106705693AActive Publication Date: 2017-05-24XINTE ENERGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XINTE ENERGY
Publication Date
2017-05-24

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Abstract

The invention provides a control method and system for a reducing furnace. The control method comprises the following steps of: sending a detecting signal to a reducing furnace electrical control cabinet by utilizing a DCS through the same communication interface for sending a current control signal, determining whether communication between the DCS and the reducing furnace electrical control cabinet has faults or not by judging whether the detecting signal is received or not through the reducing furnace electrical control cabinet, distinguishing whether the reducing furnace normally stops or communication between the DCS and the reducing furnace electrical control cabinet is interrupted, and timely removing communication faults when the communication is interrupted; and while judging the communication faults, keeping current at present of the reducing furnace unchanged, providing a stable current control signal to the reducing furnace through the reducing furnace electrical control cabinet, preventing the reducing furnace from current fluctuation or stop, thereby realizing stable operation of the reducing furnace when the communication between the DCS and the reducing furnace electrical control cabinet has faults.
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Description

technical field

[0001] The invention relates to the technical field of polysilicon production, in particular to a reduction furnace control method and system. Background technique

[0002] During the polysilicon production process, the power control cabinet of the reduction furnace (that is, the electric control cabinet of the reduction furnace) needs to adjust the control current according to the adjustment of the production process, so as to change the magnitude of the current passing through the polysilicon rod. That is, the DCS (Distributed Control System, distributed control system) sends the current control signal (ie, the current setting value) to the electric control cabinet of the reduction furnace according to a certain sending cycle, and the electric control cabinet of the reduction furnace controls the reduction according to the current setting value sent by the DCS. Electric current on polysilicon rods in the furnace.

[0003] The RS485 communication mode is us...

Claims

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