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

Flue gas recirculation system

A technology of recirculation system and flue gas recirculation, which is applied in the control of superheating temperature, steam superheating, steam generation, etc., can solve the problem of insufficient reheating steam temperature of the secondary reheating boiler, achieve good regulation effect, increase Effect of flue gas flow rate and improvement of convective heat transfer coefficient

Pending Publication Date: 2019-11-05
SHANGHAI BOILER WORKS
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: changing the problem of insufficient reheating steam temperature of the secondary reheating boiler

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
  • Flue gas recirculation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The present invention will be described in further detail below in conjunction with specific embodiments, but the present invention is not limited to the following examples.

[0012] Embodiments of the invention:

[0013] A flue gas recirculation system, including the first to fifth flue passages G1~G5 leading from the air preheater inlet flue to the lower part of the furnace, the cold air passage A1 leading from the air preheater inlet air passage, and the air preheater outlet The hot air channel A3 drawn from the air channel, the flue gas recirculation fan 1 , the second baffle 2 , the third baffle 3 , the fourth baffle 4 , and the fifth baffle 5 .

[0014] The first flue G1 drawn from the inlet flue of the air preheater is connected to the flue gas recirculation fan 1, and the flue gas recirculation fan 1 is connected to the second baffle 2 by connecting the second flue G2, and the second baffle 2 is connected to the The third flue G3 is connected to the third baffl...

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 discloses a flue gas recirculation system. A first path comprises first to fifth flue G1-G5 led from an inlet flue of an air preheater to the lower part of a furnace, and the first flueG1 is led from the inlet flue of the air preheater; the first flue G1, a flue gas recirculation fan 1, the second flue G2, a second baffle 2, the third flue G3, a third baffle 3, and the fourth flue G4 are sequentially connected in series; multiple paths of fifth flues G5 are led from the fourth flue G4 to be connected to the furnace; in a second path, a cold air duct A1 led from an inlet air ductof the air preheater is connected to a fourth baffle 4 which is connected with a second air duct which communicates with the middle portion of the third flue; in a third path, a third hot air duct A3led from the inlet air duct of the air preheater is connected to a fifth baffle 5 which is connected with a fourth air duct which communicates with the middle portion of the fourth flue.

Description

technical field [0001] The invention relates to a flue gas recirculation system of a coal-fired power plant boiler. Background technique [0002] At present, domestic coal-fired electric boilers burn a huge difference between the fuel and the original design coal, including various conditions during operation, so that the reheat steam temperature during operation, especially under low load, cannot reach the design value. [0003] In order to adapt to the change of coal type and load, etc., the steam temperature is not enough. In the case that the temperature adjustment by the burner swing is not obvious under low load, an adjustment method is needed to significantly increase the reheat steam temperature. Contents of the invention [0004] The technical problem to be solved by the invention is: changing the problem of insufficient reheating steam temperature of the secondary reheating boiler. [0005] In order to solve the above technical problems, the technical solution o...

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): F22G5/06
CPCF22G5/06
Inventor 徐伟俊孙厚彬
Owner SHANGHAI BOILER WORKS