Method and control device for combustion of a hot blast furnace

What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
The combustion control method and device for hot blast furnaces address overheating and underheating issues by calculating heat quantities and adjusting gas supply, ensuring efficient and cost-effective operation.

JP7831276B2Active Publication Date: 2026-03-17JFE STEEL CORP

3 Cites 0 Cited by

Patent Information

Application Number: JP2022207134
Authority / Receiving Office: JP · JP
Patent Type: Patents
Current Assignee / Owner
Filing Date: 2022-12-23
Publication Date: 2026-03-17
Estimated Expiration: 2042-12-23

Application Information

Patent Timeline

23 Dec 2022

Application

JP2022207134

17 Mar 2026

Publication

JP7831276B2

IPC: C21B9/00

CPC: C21B2300/04; C21B9/14; C21B9/04; Y02E20/34; C21B9/00; C21B7/00; F02D41/0057; F02D2200/0802

Get more patent work done with AI

Run novelty searches—or use them for FTO, design risk, drafting and technical problem-solving.

AI Tagging

Application Domain

Brick-hot blast stoves Electrical control

Technology Topics

Thermodynamics Hot air oven

Explore More Agents

Novelty Search
Search existing technologies and assess novelty
↗
FTO
Analyze whether a product may infringe others' patents
↗
Design FTO
Check prior-design risk for exterior design
↗
Drafting
Draft patent application text based on a technical solution
↗
Find Solutions with TRIZ
Generate feasible solution to solve your technical challenge
↗
IP MCP Servers
Connect trusted patent search and cited evidence to Claude, Cursor or your own AI workflow
↗

AI Technical Summary

Technical Problem

Existing combustion control methods for hot blast furnaces fail to adequately address overheating or underheating due to variations in gas calorific value and heat storage capacity, leading to increased operating costs and furnace inefficiencies.

Method used

A combustion control method and device that calculates actual and predicted heat quantities using specific formulas, adjusts gas supply based on thermal efficiency corrections, and controls the hot blast furnace to maintain optimal operating conditions.

Benefits of technology

The method and device effectively suppress excessive or insufficient heat in the hot blast furnace, reducing operating costs and improving furnace efficiency by precise heat management.

✦ Generated by Eureka AI based on patent content.

Patent Text Reader

Abstract

To provide a method and device for combustion control of a hot air furnace, capable of suppressing the occurrence of excess heat or insufficient heat in the hot air furnace.SOLUTION: A method for combustion control of a hot air furnace includes: a combustion step of storing heat input by combusting a gas mixture in a heat storage chamber; and a blower step of generating hot air by supplying cold air into the heat storage chamber and then supplying the generated hot air to a blast furnace. The method further includes a step of calculating an actual value of heat quantity, calculating the amount of heat taken away by generating the hot air, calculating an actual value of thermal efficiency of the hot air furnace, calculating the amount of heat to be input when generating hot air next time, calculating the amount of mixed gas to be supplied when generating the next hot air, and controlling the hot air furnace based on the calculated amount of mixed gas.SELECTED DRAWING: Figure 3

Need to check novelty before this filing date? Find Prior Art