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Energy-saving regulating and controlling method for combustion fan of blast furnace hot blast stove

A technology of combustion-supporting fan and hot blast stove, which can be applied to blast furnace details, blast furnaces, blast furnace parts, etc., and can solve problems such as waste of electric energy

Active Publication Date: 2015-07-29
上海联达节能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide an energy-saving control method for the combustion-supporting fan of the blast furnace hot blast stove, mainly to solve the problem of waste of electric energy caused by over-pressure air supply

Method used

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  • Energy-saving regulating and controlling method for combustion fan of blast furnace hot blast stove

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Embodiment 1

[0016] Embodiment 1: The energy-saving control mode of a kind of blast furnace hot stove combustion-supporting fan of the present invention is as follows figure 1 As shown, when the present invention is implemented without changing the operating conditions of the combustion-supporting blower of the original blast furnace hot blast stove, a pressure sensor 10 is installed on the outlet pipe of the combustion-supporting blower, and a frequency converter 9 is installed on the combustion-supporting blower 1. The opening signal of the combustion-supporting air door 2 of each hot blast stove, the control signal of the frequency converter 9 , and the pressure signal of the pressure sensor 10 are all connected to the energy-saving controller 8 . The invention adopts the pressure adjustment technology under the linkage of the air door to adjust and control the air supply process of the combustion-supporting fan, so as to achieve the purpose of greatly saving energy and reducing consumpt...

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Abstract

The invention relates to an energy-saving regulating and controlling method for a combustion fan of a blast furnace hot blast stove. A traditional combustion fan is designed according to needs of maximum working stations of multiple hot blast stoves, operates at power frequency and is constant in power supply pressure; air supply amounts of each hot blast stove at different working conditions are regulated by a corresponding combustion air door of each hot blast stove; as open degrees of the combustion air doors at the most of time are small, and the air supply pressure is higher, the waste of mass power energy is caused. According to the energy-saving regulating and controlling method disclosed by the invention, under the condition that operation working conditions of the combustion fan of the original blast furnace hot blast stove are unchanged, a frequency converter is added on the blast furnace hot blast stove, and a pressure sensor is arranged on an outlet pipeline of the combustion fan; a control signal of the frequency converter, a pressure signal of the pressure sensor and an open degree signal of the combustion air door are connected to an energy-saving controller; the energy-saving regulation and control over the combustion fan of the blast furnace hot blast stove are realized by adopting a technical method of linking the air door with pressure regulation, so that proper air supply pressure is dynamically regulated and controlled according to the maximum open degree of the air door, and the aims of greatly saving energy and reducing consumption are achieved.

Description

technical field [0001] The invention belongs to the technical field of energy saving of a combustion-supporting blower for a hot blast stove in metal smelting, and in particular relates to an energy-saving control method for a combustion-supporting blower for a blast furnace hot blast stove. Background technique [0002] In ironmaking and other metal smelting processes, in order to keep the blast furnace production stable and continuous, the hot blast furnace is used to burn fuel to store heat, heat the blast, and continuously send hot blast into the blast furnace. The hot blast stove has three working states: burning state, simmering state and air supply state. When the hot blast stove is in the burning state, gas is sent to the hot blast stove through the gas pipeline, and an appropriate amount of combustion-supporting air is sent to the hot blast stove through the combustion-supporting fan and the combustion-supporting damper. The combustion-supporting damper is automatic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B9/14
Inventor 贾书洪贾生华姜滨
Owner 上海联达节能科技股份有限公司
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