Top burning type hot blast stove with thermal insulation layer in precombustion chamber

A technology of pre-combustion chamber and thermal insulation layer is applied in the field of blast furnace hot blast stove, which can solve the problem of insufficient service life of hot blast stove, and achieve the effects of improving mixing effect and diversion effect, improving service life, and reducing thermal expansion and thermal stress.

Active Publication Date: 2006-02-01
SHANDONG PROVINCE METALLURGICAL ENG CO LTD
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the heat transfer still exists, and the temperature gradient also exists, so the service life of the hot blast stove is still not long enough

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Top burning type hot blast stove with thermal insulation layer in precombustion chamber
  • Top burning type hot blast stove with thermal insulation layer in precombustion chamber
  • Top burning type hot blast stove with thermal insulation layer in precombustion chamber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] As shown in Figure 1 and Figure 2, they are the basic structural diagrams of the single-seat hot blast stove with the isolation cover located between the pre-chamber and the dome and in different positions above the pre-chamber in the embodiment of the present invention. Wherein, the top-combustion hot blast stove with a thermal insulation layer in the pre-combustion chamber consists of a cold air inlet 1, a furnace grate and a pillar 2, a flue gas outlet 28, a checker brick 3 as a heat storage body, a heat storage chamber 4, and a furnace shell. 5. Furnace lining 6, hot air outlet 7, dome (combustion chamber) 8, pre-combustion chamber support arm 9, pre-combustion chamber 22 (the part framed by dotted line in the figure).

[0038] Described pre-chamber 22 is positioned on vault (combustion chamber) 8 and coaxial in vertical direction, and pre-chamber 22 is insulated by air ring cavity 10, air inlet 11, air ring cavity upper wall 12, ring cavity Layer 13, gas ring cavit...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A top combustion type hot air furnace with thermally isolating layer for preburning chamber features that said thermally isolating layer can prevent the transfer of heat from preburning chamber to the internal walls of annular gas cavity and annular air cavity to lower their temp and decrease their temp stress and thermal expansion, so elongating the service life of hot air furnace. A heat isolating layer is also arranged in the second liner between annular gas and air cavities. A movable heat isolating cover is arranged between preburning and burning chambers.

Description

technical field [0001] The invention relates to the field of blast furnace hot blast stoves in the metallurgical industry, in particular to a top-combustion hot blast stove with a heat insulating layer in a pre-combustion chamber. Background technique [0002] Blast furnace smelting requires hot air with a sufficiently high temperature, and a hot blast stove is a commonly used device for providing such hot air. However, the top-fired hot blast stove has the defect that the partition wall of the pre-combustion chamber is easily damaged by frequent temperature vibrations. Although the top-burning hot blast stoves currently used in industry have been greatly improved, their structure has made considerable progress compared with the early top-burning hot blast stoves. The more effective treatment method adopted is to divide the partition wall into two independent parts, thereby shortening the brick length and reducing thermal expansion. But the transfer of heat still exists, a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C21B9/00
CPCC21B9/02C21B9/06
Inventor 黄东生姚朝胜钱钢魏新民衣忠德王荣恩吴洪勋
Owner SHANDONG PROVINCE METALLURGICAL ENG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap