Supercharge Your Innovation With Domain-Expert AI Agents!

A method for preventing furnace shutdown accidents caused by slag returning to block the tuyere due to sudden power failure of the fuming furnace

A technology of fuming furnace and tuyere, which is applied in the field of preventing accidents caused by slag back blocking the tuyere due to a sudden power failure of the fuming furnace. Reliable operation, reduced economic losses, and high economic benefits

Active Publication Date: 2019-01-29
YAN XIN ENVIRONMENTAL PROTECTION & TECH CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there is a sudden power failure and the blower stops blowing, the air nozzle will lose pressure, which will immediately cause high-level slag to pour into the air nozzle and the primary gas pipe and secondary air supply pipe connected to the air nozzle, resulting in a furnace shutdown accident and economic losses for the enterprise. huge

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 method for preventing furnace shutdown accidents caused by slag returning to block the tuyere due to sudden power failure of the fuming furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Fuming furnace hearth area 6.6m 2 , Fuming furnace blower blower volume 240m 3 / min, wind pressure 0.074MPa, outlet diameter DN450mm, motor 500KW, standby Cummins diesel generator set 800KW, voltage 380V, 50Hz, screw air compressor pressure 0.4MPa, air flow 20m 3 / min, large-capacity gas storage tank 50m 3 ×2, two in parallel, rated pressure 0.4MPa, can store pressure 0.1MPa compressed air 50×2×4=400m 3 . The gas outlet of the large-capacity gas storage tank is equipped with a power failure automatic switch throttle valve DN150mm, an output pressure of 0.085MPa and a DN150 diameter supplementary air check valve, and connected to the gas supply blast pipeline of the fuming furnace.

[0021] In order to save investment, the air flow rate of the delayed supplementary air is selected to be 25% of the normal air volume of the fuming furnace, that is, 240m 3 / min×25%=60m 3 / min. The air supply pressure is slightly higher than the normal pressure of 0.074MPa, so the air ...

Embodiment 2

[0023] Different from the screw air compressor used in Example 1, a lower-cost piston air compressor is used in this example. The parameters are the same as those of the screw air compressor in Example 1, and other configurations are also the same, and the use effect is the same as that of the implementation example 1.

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 provides a method for preventing the furnace shutdown accident caused by tuyere blockage due to backward flow of slag during sudden power failure of a fuming furnace. According to the method, an air compressor and a large-volume air storage tank are arranged to be connected with the fuming furnace, a standby diesel generator and an automatic control cabinet controlling overall operation are arranged, and the standby diesel generator is connected with an air blower of the fuming furnace and the air compressor; when an external power source is in power failure suddenly, the large-volume air storage tank is instantly and automatically controlled to blow air to the fuming furnace for delaying, meanwhile a circuit is switched to a standby power generation mode, the standby dieselgenerator is started and supplies power to the air blower of the fuming furnace, then normal air use of the fuming furnace is guaranteed, meanwhile, the large-volume air storage tank stops work, and the air compressor starts and supplements air to the large-volume air storage tank. According to the method, the air compressor and the large-volume air storage tank are used for air supplementation and delay during power failure, the standby diesel generator is started to supply power, it is avoided that during power failure of the fuming furnace, since slag flows backwards to block a tuyere, thefurnace shutdown accident is caused, and the situation that due to sudden power failure, the slag flows backwards into the tuyere of the fuming furnace, and furnace shutdown is caused can be effectively avoided.

Description

technical field [0001] The present invention relates to the smelting industry and auxiliary backup power generation technology, in particular to a method for preventing furnace shutdown accidents caused by slag returning to block the tuyere due to sudden power failure of the fuming furnace. Background technique [0002] In the non-ferrous smelting industry, fuming furnaces are often used to dilute slag and fully recover valuable metal resources. A characteristic of fuming furnace operation is slag immersion blowing. The slag layer is about 1 meter higher than the blowing tuyere. If there is a sudden power failure and the blower stops blowing, the air nozzle will lose pressure, which will immediately cause high-level slag to pour into the air nozzle and the primary gas pipe and secondary air supply pipe connected to the air nozzle, resulting in a furnace shutdown accident and economic losses for the enterprise. huge. There is usually a transition time of a few minutes from...

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): C22B7/04
CPCC22B7/001C22B7/04Y02P10/20
Inventor 石仁章石宏娇梁金凤袁冬华石俊阳王小明汪琴梁智芳石宇梁伟资元元莫运华
Owner YAN XIN ENVIRONMENTAL PROTECTION & TECH CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com