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Double-volute swirl type pulverized coal burner provided with natural gas spray pipe and pre-burning chamber

A pulverized coal burner and natural gas technology, applied in the combustion of gaseous fuel and powder fuel, the combustion of block fuel and powder fuel, the combustion of block fuel and gaseous fuel, etc., can solve the volatile release rate low, not easy to ignite and burn out, and difficult to peak-shaving operation, to achieve the effect of simple structure, stable combustion, and guaranteed safety

Active Publication Date: 2015-05-13
JIMEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low release rate of volatile matter, high ignition temperature, and poor flammability, these coals are extremely difficult to ignite and burn out, and peak-shaving operation is even more difficult.

Method used

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  • Double-volute swirl type pulverized coal burner provided with natural gas spray pipe and pre-burning chamber
  • Double-volute swirl type pulverized coal burner provided with natural gas spray pipe and pre-burning chamber
  • Double-volute swirl type pulverized coal burner provided with natural gas spray pipe and pre-burning chamber

Examples

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Embodiment

[0028] Example : A double volute swirling pulverized coal burner with a natural gas nozzle and a pre-combustion chamber, as shown in the figure, including a double volute burner 1, a natural gas nozzle 2, a central air pipe flare 3, a primary Air pipe flaring 4, natural gas-air nozzle 5, pre-combustion chamber 6 and rear secondary air duct 7. Double volute combustor 1 comprises primary air volute 101, secondary air volute 102, front secondary air duct 104, front secondary air swirl blade 106, primary air duct 103 and central air duct 105, front secondary air swirl Flow blades 106 are arranged at the outlet of the front secondary air duct 104 . The natural gas nozzle 2 is arranged in the central air duct 105 of the double volute burner 1 . The natural gas-air nozzle 5 is arranged at the outlet of the central air pipe 105 ; the flare 3 of the central air pipe is arranged at the outlet of the central air pipe 105 . The primary air flaring port 4 is arranged at the outlet of t...

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Abstract

The invention discloses a double-volute swirl type pulverized coal burner provided with a natural gas spray pipe and a pre-burning chamber. The burner mainly comprises a double-volute burner, the natural gas spray pipe, a natural gas-air nozzle, a central air pipe flaring, a primary air pipe flaring, the pre-burning chamber and a rear secondary air duct. Combustion of low-volatile coal is supported in a natural gas feeding manner, and the natural gas can increase coal dust volatiles through phase conversion at the preliminary stage of pulverized coal combustion through reasonable structure design; a good air dynamic field is organized through structure design and reasonable air distribution, so that the low-volatile pulverized coal can be timely ignited, stably burned and efficiently burnt out. The double-volute swirl type pulverized coal burner is simple in structure, convenient to modify, capable of efficiently burning the low-volatile pulverized coal and particularly suitable for structure transformation of a small industrial boiler burner, and can be widely applied to the low-volatile pulverized coal burnt on an industrial boiler.

Description

technical field [0001] The invention relates to the technical field of low volatile pulverized coal combustion, in particular to a double-volute swirling pulverized coal burner with a natural gas nozzle and a pre-combustion chamber. Background technique [0002] my country's primary energy is mainly coal, and my country is one of the countries with the most abundant coal reserves in the world. One of the major characteristics of my country's primary energy is that it is poor in oil, less in gas, and rich in coal. Under such an energy structure background, it has become the trend of the times to vigorously develop the application technology of coal in industry, and coal resources will also be in the present and For a long period of time in the future, it will occupy a dominant position in the energy used by my country's industry. Compared with other types of energy, my country's coal resources are relatively rich, and the country is currently in a period of rapid economic dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C5/32F23C7/00
Inventor 何宏舟刘众擎
Owner JIMEI UNIV
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