Optimized control system for coal gas flow of blast-furnace hot blast stove

A technology of gas flow and hot blast stove, which is applied to blast furnaces, blast furnace details, blast furnace parts, etc., can solve problems such as reducing the cost of blast furnace ironmaking, unreasonable gas distribution of hot blast stoves, etc., and achieve stable air supply temperature and hot blast stove operation , good working condition change, reasonable combustion effect

Active Publication Date: 2016-10-12
江苏和隆优化智能科技有限公司
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Problems solved by technology

[0004] In order to solve the problem of unreasonable gas distribution of each hot blast stove when the main pipe gas of the blast furnace hot blast stove is insufficient, the present invention designs a blast furnace hot blast stove gas flow optimization control system. The flow rate is adjusted to realize the efficient utilization of the gas required by the hot blast stove, obtain a higher temperature of the hot blast stove, and greatly reduce the cost of blast furnace ironmaking

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  • Optimized control system for coal gas flow of blast-furnace hot blast stove
  • Optimized control system for coal gas flow of blast-furnace hot blast stove

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Basic Gas Flow Model

[0023] According to the current main pipe gas pressure, main pipe gas flow and main pipe gas temperature, find no more than three optimal working condition knowledge items satisfying the correlation of the above three parameters higher than 0.95 from the hot stove relational database, and weight them to obtain the current basic gas flow.

[0024] Vault temperature protection model

[0025] The dome temperature is obtained through the predictive control algorithm and the predicted dome temperature T_YC after N minutes is obtained. The dome predicted temperature T_YC and the dome temperature set value T_SD output the air-to-coal ratio increment E_FMB and the gas flow increment E_JBMQL through the fuzzy control algorithm. The fuzzy control algorithm rule is

[0026] If T_YC-T_SD>E_L and IF T_YC-T_SD

[00...

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Abstract

The invention relates to the technical field of optimized control for blast-furnace hot blast stoves, and discloses an optimized control system for a coal gas flow of a blast-furnace hot blast stove. The optimized control system is characterized in that a basic coal gas flow model, an arch-crown temperature protection model, a preferred-burning stove coal gas flow correction model, a single-burning coal gas flow correction model and a coal gas flow adjustor are arranged. According to the optimized control system, the problem of unreasonable distribution of the coal gas flow of the hot blast stove due to working condition changes and coal gas insufficiency of the hot blast stove are effectively solved, and floating adjustment for the coal gas flow of the hot blast stove according to real-time working conditions is realized, thus a coal gas is much efficiently utilized to obtain a higher air supply temperature, and the cost of blast-furnace iron-making is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of optimal control of blast furnace hot blast stoves, in particular to a gas flow optimization control system for blast furnace hot blast stoves. Background technique [0002] At present, the overall environment of the metallurgical industry is relatively severe, and enterprises use various channels to save energy and reduce consumption. As far as the three-seat hot blast stove is concerned, when the gas in the main pipe is insufficient, the following problems often exist in the site of two firings and one delivery: the gas flow rate of the hot blast stove for the initial firing is relatively small, so as to meet the gas flow demand of the hot blast stove that will be sent to the air, so that As a result, the vault temperature of the newly fired furnace is low, and the exhaust gas temperature is too low when the furnace is replaced; when the two hot blast stoves are fired at the same time, the gas branch pip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B9/00
CPCC21B9/00
Inventor 宋伟李明党王孝伟
Owner 江苏和隆优化智能科技有限公司
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