Waste heat recovery system of steel rolling heating furnace

A waste heat recovery system and heating furnace technology, applied in lighting and heating equipment, furnaces, waste heat treatment, etc., to reduce pollution emissions, improve heat exchange efficiency, and ensure normal work.

Active Publication Date: 2014-08-20
XI AN JIAOTONG UNIV
View PDF6 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to make the use of the heating surface more economical, the temperature and pressure at the outlet of the air heat exchanger should...

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
  • Waste heat recovery system of steel rolling heating furnace
  • Waste heat recovery system of steel rolling heating furnace
  • Waste heat recovery system of steel rolling heating furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] see figure 1 , the present invention includes a main flue 1, and a secondary evaporator 2, a secondary air heat exchanger 3, a primary evaporator 4, a primary air heat exchanger 5, The main flue gate 6; the primary air heat exchanger 5 is provided with a cold air inlet, and is connected in series with the secondary air heat exchanger 3 provided with a hot air outlet through a pipeline; the primary evaporator 4 is provided with a water source inlet, And through the pipeline, it is connected in series with the secondary evaporator 2 provided with the steam-water mixture outlet. On the outside of the main flue 1 and the secondary evaporator 2, there is an auxiliary flue 9 for adjusting the amount of flue gas passing through the secondary air heat exchanger 3. The entrance of the auxiliary flue 9 is on the front side of the secondary evaporator 2. The ou...

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 waste heat recovery system of a steel rolling heating furnace comprises a main flue, wherein a second-level evaporator, a second-level air heat exchanger, a first-level evaporator and a first-level air heat exchanger are sequentially arranged in the main flue in the smoke flow direction. The firsts-level air heat exchanger is provided with a cold air inlet and is connected with the second-level air heat exchanger in series, wherein the second-level air heat exchanger is provided with a hot air outlet. The first-level evaporator is provided with a water source inlet and is connected with second-level evaporator in series, wherein the second-level evaporator is provided with a steam and water mixture outlet. An auxiliary flue used for regulating the amount of smoke passing through the second-level air heat exchanger is arranged in the position where the outer side of the main flue and the second-level evaporator are arranged in parallel, wherein an auxiliary flue evaporator and an auxiliary flue damper are sequentially arranged in the auxiliary flue in the smoke flow direction. The two levels of evaporators are arranged in the main flue, and therefore the steam heating area is effectively enlarged; the air heat exchangers and the evaporators are arranged in a staggered mode, the first-level air heat exchanger is arranged at the most tail end of the main flue, the temperature difference is ensured in the heat exchange process due to the arrangement method, and heat exchange efficiency is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of thermal energy and power engineering, and in particular relates to a waste heat recovery system of a steel rolling heating furnace. Background technique [0002] The steel rolling system is a major energy consumer in steel production, and the energy consumption of the heating furnace accounts for about 70% of the energy consumption in steel rolling production. Since the main goal of the steel rolling heating furnace is to heat the billet, the billet is heated uniformly according to the heating rate required by the process, and stays for a corresponding time. Relatively insufficient attention has been paid to energy saving and consumption reduction, resulting in generally high exhaust gas temperature of steel rolling heating furnaces in my country. The recovery of waste heat from flue gas at the tail of steel rolling heating furnace can not only improve economic benefits, but also reduce pollution emissio...

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
IPC IPC(8): F27D17/00F23L15/00F22B1/18
CPCY02E20/34Y02P10/25Y02P80/15
Inventor 刘长春惠世恩张庚王登辉邹浩张晓璐尚桐
Owner XI AN JIAOTONG UNIV
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