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

Furnace top and coating overheat structure for horizontal flue of waste incineration waste heat boiler

A horizontal flue and waste heat boiler technology, which is applied in boiler water pipes, steam boilers, steam superheating, etc., can solve the problem of reduced steam-water density difference, increased risk of heat transfer deterioration of horizontal flue water-cooled ceiling coating, and poor water circulation characteristics And other issues

Pending Publication Date: 2020-05-29
SHANGHAI BOILER WORKS
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: with the continuous improvement of the parameters of the waste heat recovery boiler, especially after the pressure increases, the density difference between steam and water becomes smaller, the water circulation characteristics become worse, and the risk of deterioration of the water-cooled ceiling and cladding heat transfer of the horizontal flue increases.

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
  • Furnace top and coating overheat structure for horizontal flue of waste incineration waste heat boiler
  • Furnace top and coating overheat structure for horizontal flue of waste incineration waste heat boiler
  • Furnace top and coating overheat structure for horizontal flue of waste incineration waste heat boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 and figure 2 As shown, the saturated steam at the outlet of the drum 1 is introduced into the top superheater inlet header 3 of the horizontal flue through the connecting pipe 1 , and enters the top superheater outlet header 5 after absorbing heat through the top superheater 4 . The middle of the side wall header of the horizontal flue side wall is separated by a partition into a rear wall header 6 and a front wall header 10 that are not connected to each other. The outlet header 5 of the furnace top superheater is connected with header 1 6 on the rear wall, and the steam coming out of the header 6 on the rear wall enters the cover superheater 1 7 on the rear wall, and is covered by the rear wall The superheated steam absorbed by the superheater 7 is introduced into the lower header 8 of the side wall. The lower header 8 of the side wall is a long header. The superheated steam enters the superheater 9 of the front side wall through the lower header 8...

Embodiment 2

[0024] Such as image 3 and Figure 4 As shown, the saturated steam at the drum 1 outlet is divided into three paths. The first routing connection pipe 3 20 is introduced into the top inlet header 28 in front of the evaporation screen. The furnace top inlet header 28 in front of the evaporation screen is connected with the top superheater 12 in front of the evaporation screen. The second routing connecting pipe 4 21 is introduced into the lower header 27 of the front side wall covering, and the lower header 27 of the front side wall covering is connected with the front side wall covering superheater 2 16, and the suction is realized through the front side wall covering superheater 2 16. After heating, it merges with the first road at the header 18 on the middle and front side wall and then enters the middle and side wall to cover the superheater 15 . The middle side wall cladding superheater 15 is connected with the middle and rear side wall cladding lower header 19, and th...

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 furnace top and coating overheat structure for a horizontal flue of a waste incineration waste heat boiler. Saturated steam from a boiler barrel passes through a vertical flue, and then enters a horizontal flue. The furnace top and coating overheat structure is characterized in that overheat structures are adopted for a ceiling of the horizontal flue and a side wall coating. Water-cooled membrane walls are conventionally adopted for four flues of the waste incineration waste heat boiler. The ceilings and two side walls of the four flues are all overheated, and saturated steam from a steam drum in a steam-water process passes through the ceilings and the side walls firstly in order to ensure the safety of overheated coated walls. A single-phase medium is adopted as an overheated ceiling heat exchange medium, so that heat transfer deterioration is avoided, and relative safety and reliability are ensured. A part of overheated steam can be cooled, so that the temperature of fume entering a convection heated surface can be prevented from getting too high.

Description

technical field [0001] The invention relates to an arrangement structure of a horizontal flue of a garbage incineration waste heat boiler and its cladding adopting overheating. Background technique [0002] The horizontal flue, ceiling and side walls of conventional waste incineration waste heat boilers are all water-cooled structures. However, since the ceiling water-cooling structure has no height difference or the height difference is very small, the water circulation characteristics are very poor, and the steam production rate of the covered heating surface is also very low in the low temperature area, and the water circulation characteristics are not good. Contents of the invention [0003] The technical problem to be solved by the present invention is: with the continuous improvement of the parameters of the waste heat recovery boiler, especially after the pressure increases, the density difference between steam and water becomes smaller, the water circulation charac...

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): F22G7/12F22B1/18F22B37/10
CPCF22B1/18F22B37/107F22G7/12
Inventor 辛少杰郭琴琴刘影唐青姚晓勤
Owner SHANGHAI BOILER WORKS