Continuous annealing furnace with shielding gas recovery function

A technology of continuous annealing furnace and protective gas, which is applied in furnaces, heat treatment furnaces, furnace types, etc., can solve the problems of wasting resources and achieve energy saving, significant economic and social benefits

Active Publication Date: 2015-08-19
SUZHOU SUJING PROTECTIVE ATMOSPHERE
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of hydrogen in the protective gas passed into a steel strip annealing furnace is 200~500Nm 3 / h, the actual loss of this part of hydrogen protection gas is only 5%~8% during operation, and the remaining protection hydrogen is burned directly or emptied into the atmosphere, wasting a lot of resources

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
  • Continuous annealing furnace with shielding gas recovery function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment one: as attached figure 1 As shown, a continuous annealing furnace with protective gas recovery function includes a furnace body E1 and a protective gas recovery and utilization device. The furnace body E1 has a shielding gas inlet for passing in the shielding gas and a shielding gas outlet for discharging the shielding gas, which are respectively located at both ends of the furnace body E1. The protective gas passed into the furnace body E1 is a mixed gas of hydrogen and nitrogen, while the protective gas discharged from the furnace body E1 contains a small amount of solid impurities (dust and fine particles), oxygen and other components, and the main components are hydrogen and nitrogen. The mixed gas (about 600 ℃).

[0023] The shielding gas recycling device connected to the furnace body E1 is used to purify the shielding gas discharged from the furnace body E1 and send it back to the furnace body E1 for recycling. The directly reused shielding gas is tr...

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 continuous annealing furnace with a shielding gas recovery function. The continuous annealing furnace comprises a furnace body, and a shielding gas recycling device used for purifying the shielding gas discharged from the furnace body and feeding the shielding gas back into the furnace body for recycling, wherein the shielding gas inlet of the shielding gas recycling device is connected with the shielding gas outlet of the furnace body; and the shielding gas outlet of the shielding gas recycling device is connected with the shielding gas inlet of the furnace body. The shielding gas recycling device comprises an impurity filtering unit, an oxygen filtering unit, a water filtering unit and a control system, wherein the impurity filtering unit is used for filtering solid impurities in the shielding gas; the oxygen filtering unit is used for filtering oxygen in the shielding gas; the water filtering unit is used for filtering water in the shielding gas; and the control system is respectively in signal connection with the impurity filtering unit, the oxygen filtering unit and the water filtering unit. According to the continuous annealing furnace disclosed by the invention, the shielding gas can be fully utilized, the energy is saved, and the continuous annealing furnace adapts to the development direction of energy conservation and emission reduction and has obvious economic benefits and social benefits.

Description

technical field [0001] The invention relates to a continuous annealing furnace, in particular to a continuous annealing furnace which adopts the protective gas to provide the atmosphere in the furnace and has the function of recovering the protective gas. Background technique [0002] In the continuous annealing furnace for annealing the steel strip, in order to reduce the moisture and oxygen concentration in the furnace when the atmosphere of the furnace is opened or the atmosphere invades the atmosphere in the furnace, the following methods are widely used: The temperature in the furnace is used to vaporize the moisture in the furnace, and non-oxidizing gas such as inert gas is supplied into the furnace as a replacement gas for the atmosphere in the furnace before and after gasification, and the gas in the furnace is discharged at the same time, so that the furnace The atmosphere is replaced with a non-oxidizing gas. [0003] As the market has higher and higher requiremen...

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): C21D1/26C21D1/74C21D9/56
Inventor 郗春满王欢郭正军朱蓉迪
Owner SUZHOU SUJING PROTECTIVE ATMOSPHERE
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