Unlock instant, AI-driven research and patent intelligence for your innovation.

A blast furnace environmental protection wind shutdown method

A technology for blast furnaces and environmental protection, which is applied to blast furnaces, blast furnace details, blast furnace parts, etc., and can solve problems such as the burden of atmospheric emissions

Active Publication Date: 2021-07-06
JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the shutdown of the blast furnace, it will bring a serious emission burden to the atmosphere

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
  • A blast furnace environmental protection wind shutdown method
  • A blast furnace environmental protection wind shutdown method
  • A blast furnace environmental protection wind shutdown method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The present invention will be further described in detail below with reference to the embodiments of the drawings, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0035] The blast furnace gas system involved in the blast furnace shutdown method in this embodiment includes a blast furnace body 1, a gravity dust removal body 4, several bag dust removal cylinders 10 (only one is shown in the figure), a pressure regulating valve group 14, a TRT system 15, a net Gas pipeline network 18. Wherein, the blast furnace body 1 is provided near the upper part of the body with a steam pipe 23 for passing steam into the blast furnace body, and the steam pipe 23 is provid...

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

The invention relates to a blast furnace environmental protection wind break method, starting from the normal air volume, every time the wind is reduced by 500m 3 / min deactivate a bag dust removal cylinder; when the blast furnace body reduces the wind to 2500m 3 / min, steam is passed to the top of the blast furnace, and nitrogen is purged into the large and small boxes of the gravity dust removal body (4); the blast furnace air is reduced to 500-1000m 3 / min, keep 2‑3 baghouses; open the top release valve of the remaining baghouses, and discharge the purified furnace gas; when the blast furnace vents to 0, open the top release valve of the blast furnace. At the end of the wind shutdown, the method of blast furnace environmental protection wind shutdown is adopted by opening the cloth bag cylinder to release the clean gas, so as to realize energy saving and emission reduction, environmental protection and safety wind shutdown.

Description

technical field [0001] The invention relates to a blast furnace wind shutdown method, which reduces the amount of furnace dust blown out and realizes environmental protection and safety wind shutdown. Background technique [0002] At present, the gas release at the end of the blast furnace shutdown is generally done by opening the top of the blast furnace to release the gas from the top of the blast furnace, and using gravity dust removal to block the valve to cut off the gas. And this method of shutting off the wind can cause a large amount of (powdered) furnace dust to be discharged into the atmosphere while the gas is released, which will pollute the air. According to the production rules, blast furnace production is usually shut down for maintenance every 1 to 2 months. As far as thousands of large and small blast furnaces are concerned, dozens of blast furnaces are shut down every day on average. According to a furnace capacity of 3500-5000m 3 The blast furnace dust bl...

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 Patents(China)
IPC IPC(8): C21B5/00C21B5/06C21B7/00
CPCC21B5/00C21B5/06C21B7/002Y02P10/25
Inventor 杨和祺徐振庭郭超赵华尤红磊王卫强罗烽
Owner JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD