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

Active Publication Date: 2017-05-24
XINTE ENERGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a reduction furnace control method and system to solve the problem of abnormal shutdown of the reduction furnace caused by communication failure between the DCS and the reduction furnace electric control cabinet

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  • Control method and system for reducing furnace
  • Control method and system for reducing furnace
  • Control method and system for reducing furnace

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Embodiment Construction

[0036] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Apparently, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] In the field of polysilicon production technology, the reduction furnace control system controls the magnitude of the current loaded on each silicon rod in the reduction furnace and the power-on time. The reduction furnace control system includes DCS and at least one reduction furnace electric control cabinet. Multiple pairs of silicon rods in the reduction furnace are divided into multiple groups. DCS can control multiple reduction furnace electric control cabinets. Each reduction f...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D19/00
Inventor 张书涛尹立杰郑安王明明马腾飞刘方旭其他发明人请求不公开姓名
Owner XINTE ENERGY
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