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Jet type gas-solid separating device

A gas-solid separation and jet-type technology, applied in the field of thick-lean separation technology and equipment, can solve the problem of stable combustion, high efficiency, anti-slagging, anti-high temperature corrosion of unfavorable swirl burners, increase the operating cost of power plant boilers, and reduce the safety of boiler operation In order to achieve the effect of improving combustion efficiency and stable combustion characteristics, occupying a small space and simple structure

Inactive Publication Date: 2006-05-17
TSINGHUA UNIV
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Problems solved by technology

The various gas-solid separation technologies listed above have a common disadvantage of severe wear and resistance, which not only increases the operating cost of the boiler in the power plant, but also reduces the safety of the boiler operation
In addition, except for the radial separation technology (Chinese patent: a radial thick-lean swirl pulverized coal burner, CN93244359.1), the above separation cannot directly form the separation effect of inner thick and outer thin, and some equipment needs to be rearranged to achieve inner thick A reasonable state of external light, otherwise it is not conducive to the stable combustion, high efficiency, anti-slagging, anti-high temperature corrosion and other performances of the swirl burner

Method used

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  • Jet type gas-solid separating device
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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, working principle, concrete structure and implementation of the present invention are further described:

[0021] According to the inertia difference of different phases in the gas-solid two-phase flow, the jet flow generated by the expansion pipe section is used to separate the gas-solid two-phase fluid from thick to thin, and the large solid particles are enriched in the center of the jet flow, while the gas phase and some small particles expand to the surroundings. The thick strands in the fluid jetted out from the primary straight pipe section 1 through the expansion pipe section 2 will be collected by the core pipe 3, while the light strands will be collected by the annular channel between the core pipe and the expansion pipe section.

[0022] figure 1 It is a schematic diagram of the structural principle of an embodiment provided by the present invention. It consists of a primary straight pipe section 1, an expanded...

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Abstract

The present invention belongs to a jet-flow type gas-solid separation device, and relates to a thick-thin separation technique in the boiler combustion device and its equipment. Said device is formed from once flow straight pipe section, expanded pipe section connected with said straight pipe section and core pipe placed in the expanded pipe section. Said invention also provides the working principle of said gas-solid separation device.

Description

technical field [0001] The invention belongs to a gas-solid separation device, in particular to the density separation technology and equipment in boiler burners. Background technique [0002] The burner is one of the key components of the boiler, its performance directly affects the stability of the boiler, combustion efficiency, NO X The formation, slagging characteristics and high temperature corrosion indicators. Rich-lean combustion has been proposed in recent decades and widely used in a variety of direct current, swirling low NO X One of the key technologies of the burner, in order to create fuel-rich combustion in the early stage of combustion and reduce NO X The build provides prerequisites. [0003] At present, there are a variety of thick and thin separation technologies at home and abroad, such as ① using the elbow at the entrance of the burner to divide the primary air into two parallel thick and thin streams by inertia, such as B&W's DRB and PAX burners, Mit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D1/02
Inventor 张海王卫良岳光溪吕俊复
Owner TSINGHUA UNIV
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