Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Combined Coal Gasification and Combustion Fluidized Bed-Powdered Coal Furnace in Series

A fluidized bed and pulverized coal furnace technology is applied in fluidized bed combustion equipment, fuels burned in a molten state, and combustion methods, etc., and can solve the problems of inability of simultaneous combustion of fuels, difficulty in stable combustion under low load, and poor adaptability to coal types. , to achieve the effect of reducing power consumption, reducing the formation of nitrogen oxides, and strengthening combustion

Active Publication Date: 2015-10-07
HARBIN INST OF TECH
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the problems that when the fuel particle size and combustion activity of the existing pulverized coal furnace are different, the two fuels cannot be burned at the same time, it is difficult to burn stably at low load, the specific pulverized coal furnace has poor adaptability to coal types, and the power consumption of the coal mill is high. , and then provides a series compound coal gasification and combustion fluidized bed-coal furnace

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
  • Combined Coal Gasification and Combustion Fluidized Bed-Powdered Coal Furnace in Series
  • Combined Coal Gasification and Combustion Fluidized Bed-Powdered Coal Furnace in Series
  • Combined Coal Gasification and Combustion Fluidized Bed-Powdered Coal Furnace in Series

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0018] Specific implementation mode one: combine Figure 1 ~ Figure 3 Describe this embodiment, this embodiment comprises pulverized coal suspension combustion chamber 7, water cooling wall 8, combustion fluidized bed 4, gasification fluidized bed 9, overflow pipe 10, combustion fluidized bed 4 and gasification fluidized bed 9 are positioned at The lower side of the cold ash bucket in the pulverized coal suspension combustion chamber 7, the gasification fluidized bed 9 and the furnace are completely separated by the water wall 8, the gasification fluidized bed 9 and the combustion fluidized bed 4 communicate with each other through the overflow pipe 10, and the combustion The fluidized bed 4 and the furnace are separated by a forked tube bundle 5, forming a gasification fluidized bed 9, a combustion fluidized bed 4 and a pulverized coal suspension combustion chamber 7 connected in series. The forked tube bundle 5 plays a role of isolation, but the gas-solid two-phase flow and ...

specific Embodiment approach 2

[0019] Specific implementation mode two: combination figure 1 This embodiment will be described. The gasification fluidized bed 9 of this embodiment is an independent fluidized bed coal gasifier. The gasification fluidized bed 9 can be turned on or off, which has little effect on the output of the boiler. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0020] Specific implementation mode three: combination figure 1 To describe this embodiment, the coal combustion ratio of the combustion fluidized bed 4 of this embodiment accounts for 20% to 40% of that of the pulverized-coal suspension combustion chamber 7 . This design is conducive to adjusting the boiler compound. Other compositions and connections are the same as those in Embodiment 1 or 2.

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 series-connected compounded gas gasification and combustion fluidized bed-pulverized coal furnace, relates to a fluidized bed-pulverized coal furnace, and aims to solve the problem that two fuels cannot be combusted at the same time, the low-load stable combustion is difficult, a specific pulverized furnace has poor adaptability to coal types and the power consumption of a coal mill is high when the fuel particles and the combustion activities of the conventional pulverized coal furnace are different. The series-connected compounded gas gasification and combustion fluidized bed-pulverized coal furnace comprises a pulverized coal suspension combustion chamber, a water cooling wall, a combustion fluidized bed, a gasification fluidized bed and an overflow pipe, wherein the combustion fluidized bed and the gasification fluidized bed are positioned on the lower side of an ash cooling hopper in the pulverized coal suspension combustion chamber; the gasification fluidized bed is completely separated from a furnace hearth through the water cooling wall; the gasification fluidized bed is communicated with the combustion fluidized bed through the overflow pipe; the combustion fluidized bed is separated from the furnace hearth by staggered pipe bundles, so that the gasification fluidized bed, the combustion fluidized bed and the pulverized coal suspension combustion chamber are connected in series. The series-connected compounded gas gasification and combustion fluidized bed-pulverized coal furnace is used for high-efficiency combustion of a coal-fired boiler.

Description

technical field [0001] The invention relates to a fluidized bed-coal powder furnace, in particular to a series compound coal gasification and combustion fluidized bed-coal powder furnace. Background technique [0002] Pulverized coal suspension combustion technology is a combustion technology that uses pulverized coal as fuel and has the advantages of rapid combustion, large capacity, high efficiency, and easy control and adjustment. This technology is very mature and is most widely used in power plant boilers. The structure of the existing pulverized coal furnace is as follows Figure 4 shown. The coal particles used in the pulverized coal furnace have a diameter of about 0.05 mm to 0.1 mm, and are prepared by a pulverized coal pulverization system. The pulverized coal boiler has the following disadvantages: low load stable combustion is difficult, the specific pulverized coal boiler has poor adaptability to coal types, and the power consumption of the coal mill is high. ...

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 Patents(China)
IPC IPC(8): F23C10/00F23K1/00
Inventor 许卫国孙立岩李丹赵飞翔刘国栋陆慧林
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products