Double-inlet and double-outlet coal mill inlet cold and hot primary air mixing system and method

A double-inlet, double-outlet, mixing system technology, applied in the direction of grain processing, etc., can solve the problem of large temperature deviation of the mixed air, achieve uniform flow field, reduce local flow resistance, and solve the effect of large temperature deviation

Inactive Publication Date: 2020-12-25
HUADIAN ELECTRIC POWER SCI INST CO LTD
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to completely solve the problem of large temperature deviation of the mixed air at the inlets of the double-inlet and double-outlet coal mills, the present invention provides a system and method for mixing cold and hot primary air at the inlets of the double-inlet and double-outlet coal mills

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
  • Double-inlet and double-outlet coal mill inlet cold and hot primary air mixing system and method
  • Double-inlet and double-outlet coal mill inlet cold and hot primary air mixing system and method
  • Double-inlet and double-outlet coal mill inlet cold and hot primary air mixing system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0017] Example.

[0018] see Figure 1 to Figure 4 , in this embodiment, a double-inlet and double-outlet coal mill inlet cold and hot primary air mixing system includes a coal mill 13, and also includes a hot primary air main pipe 1, a cold primary air main pipe 2, a hot primary air pipe 3. Hot primary air regulating baffle 4. Cold primary air regulating baffle 5. Cold primary air pipe 6. Mixing air pipe 7. Diverting tee 8. Left mixing air branch pipe 9. Right mixing air branch pipe 10. Right side Capacity damper 11 and left capacity damper 12; one end of the hot primary air pipe 3 and the cold primary air pipe 6 are respectively connected to the side walls of the hot primary air main pipe 1 and the cold primary a...

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 double-inlet and double-outlet coal mill inlet cold and hot primary air mixing system and method, and belongs to the field of energy-saving treatment of power station boilercoal pulverizing systems. The system comprises a coal mill and further comprises a hot primary air main pipe, a cold primary air main pipe, a hot primary air pipe, a hot primary air adjusting baffle,a cold primary air adjusting baffle, a cold primary air pipe, a mixed air pipe, a flow dividing tee joint, a left-side mixed air branch pipe, a right-side mixed air branch pipe, a right-side capacityair door and a left-side capacity air door. By changing the mounting modes of the hot primary air adjusting baffle and the cold primary air adjusting baffle, structurally optimizing the pipeline structure of an airflow mixing part and structurally optimizing the flow dividing tee joint, the problem that the temperature deviation of mixed air at inlets in the two ends of the double-inlet and double-outlet coal mill is large can be thoroughly solved.

Description

technical field [0001] The invention relates to a system and method for mixing cold and hot primary air at the entrance of a double-inlet and double-outlet coal mill, and belongs to the field of energy-saving management of power plant boiler pulverizing systems. Background technique [0002] Coal-fired power station pulverizing system is an important auxiliary system of the boiler, and its safe and economical operation directly determines the economy and safety of unit operation. [0003] The double-inlet and double-outlet pulverized coal pulverization system is one of the most common layout types selected by power plant boilers, but there is often a problem of large temperature deviation of the mixed air at the inlets of both ends of the coal mill, resulting in inconsistent temperature at the outlet of the coal mill. Restrict the outlet temperature of the coal mill from further increasing. Taking the boiler of a 330MW unit as an example, when the unit is running at full lo...

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): B02C23/18
CPCB02C23/18
Inventor 黄建平徐鹏志陈炜聪胡志勇陈广伟亓军锋
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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