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Adjustable micro distributing pulverized coal distributor

A technology of differentiating pulverized coal and distributor, which is applied in the direction of block/powder supply/distribution, adjustment of fuel supply, supply configuration, etc., can solve problems such as difficulty in uniform distribution, achieve good distribution effect, and meet the needs of engineering applications Effect

Active Publication Date: 2017-05-31
JIANGSU ZHONGNENG POWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The double adjustable pulverized coal distributor basically eliminates various problems related to the primary air powder distribution characteristics of large-capacity coal-fired boilers. Allocation is more difficult

Method used

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  • Adjustable micro distributing pulverized coal distributor
  • Adjustable micro distributing pulverized coal distributor
  • Adjustable micro distributing pulverized coal distributor

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Embodiment Construction

[0014] In order to make the technical solution of the present invention clearer, the present invention will be further described below in conjunction with specific embodiments and accompanying drawings. Any solution obtained by performing equivalent replacement and conventional reasoning on the technical features of the technical solution of the present invention shall fall under the protection of the present invention. scope.

[0015] As shown in the figure, an adjustable differential pulverized coal distributor includes a housing 1 and a distribution grid installed in the housing. The lower part of the housing is provided with an inlet pipe 3, and the upper part of the housing is provided with two outlet branch pipes 4. Except for the inlet pipe and the outlet branch pipe, it is a closed cavity, and the distribution grid adopts a trapezoidal distribution grid 2, and the top of the trapezoidal distribution grid is a concave arc shape, and the trapezoidal distribution grid divi...

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Abstract

The invention discloses an adjustable micro distributing pulverized coal distributor. The adjustable micro distributing pulverized coal distributor comprises a shell and a distribution grid arranged in the shell. An inlet of the shell is connected with an inlet pipe and an upstream pipeline, an outlet of the shell communicates with outlet branch pipes and is connected with a downstream pipeline, and the part, except the inlet pipe and the outlet branch pipes, of the shell is a closed cavity. A trapezoid distribution grid is adopted as the distribution grid, the top of the trapezoid distribution grid is an arc, and the shell cavity is divided into a plurality of grids through the trapezoid distribution grid. A first flow guiding plate and a second flow guiding plate are arranged in the grids. Openings in the two sides of the grids communicate with the two outlet branch pipes. Openings in the tops of the grids communicate with the two outlet branch pipes. A first adjusting baffle is arranged above outlets in the tops of the grids. The outlet branch pipes are provided with second adjusting baffles, and through the adjustment of the two baffles, the outlets can achieve the relatively uniform distribution effect no matter whether an inlet flow field is uniform or not.

Description

technical field [0001] The invention relates to the field of gas-solid two-phase flow transportation, in particular to an adjustable differential pulverized coal distributor, which is a device for evenly distributing powder-containing airflow to several branch pipes, and can be adjusted during operation, and is mainly used in large-scale In the boiler pulverizing system of the thermal power plant. Background technique [0002] Modern large-scale coal-fired power plant boilers mostly use a medium-speed mill direct blowing pulverization system. Usually, each coal mill supplies primary air powder to multiple burners at the same time. Whether the primary air powder distribution of each burner is uniform or not is one of the important factors that determine the quality of boiler combustion conditions. This is not only the need to prevent contamination, slagging, incomplete combustion and high-temperature corrosion in the furnace, but also a low-NOx combustion technology. prerequ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23K3/02F23N1/02
CPCF23K3/02F23N1/027F23K2203/006F23N2239/02
Inventor 丁为平晋中华徐明厚陈太文陈克祥
Owner JIANGSU ZHONGNENG POWER EQUIP
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