Negative-pressure pulverized coal preparing system

A preparation system, a technology of negative pressure coal, applied in the preparation of block/powder fuel, combustion equipment, lighting and heating equipment, etc. The effect of improving utilization and improving quality

Inactive Publication Date: 2016-12-07
SHANDONG HUANNENG DESIGN INST
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In the prior art, the heat generated by burning self-produced pulverized coal is mainly used to dry the pulverized coal, and the coal is deliberately burned only for drying the pulverized coal, resulting in a waste of energy
The temperature of the flue gas produced by the power plant boiler is still about 130 degrees Celsius. This part, the existing technology does not have many ways to utilize the waste heat of this part of the flue

Method used

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  • Negative-pressure pulverized coal preparing system
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  • Negative-pressure pulverized coal preparing system

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[0026] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0027] In order to simplify the drawings, the pipelines used to communicate the various technical features are replaced by straight lines in the drawings.

[0028] like figure 1 As shown, a negative pressure pulverized coal preparation system includes a conveyor belt 11, a raw coal bunker 1, a coal feeder 2, a coal mill 3, a dryer 4,...

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Abstract

The invention relates to the technical field of fuel preparing, in particular to a negative-pressure pulverized coal preparing system used for improving the pulverized coal drying efficiency and increasing the energy utilization rate. The negative-pressure pulverized coal preparing system is characterized by comprising a conveying belt, a raw coal bin, a coal feeder, a coal mill, a dryer, a powder collecting bin and a coal-fired furnace; a discharging port of the coal mill communicates with the dryer; the dryer comprises a case, a pulverized coal inlet is formed in the upper end of the case and communicates with the discharging port of the coal mill, and a platy drying device is fixedly connected in the case; and a scattering device is rotationally connected in the case, the case is provided with an extraction opening, the extraction opening is located below the scattering device and connected with a centrifugal fan, and the bottom of the case communicates with the powder collecting bin. The negative-pressure pulverized coal preparing system has the beneficial effects that the pulverized coal can be prevented from being gathered into small particles, and the pulverized coal drying efficiency and quality are improved.

Description

technical field [0001] The invention relates to the technical field of fuel preparation, in particular to a negative pressure pulverized coal preparation system. Background technique [0002] Burning coal to obtain energy is still one of the main ways of obtaining energy in my country at present, and its proportion accounts for more than 50% of the total energy. Therefore, promoting the clean and efficient use of fossil energy such as coal has a great significance at this stage. Significance. High-efficiency and environmentally friendly pulverized coal boiler is a key energy-saving technology project promoted by the state. It has the characteristics of high efficiency and energy saving, clean emission, high level of automation, and environmental friendliness. It is of great significance to promote the clean and efficient utilization of coal, improve the atmospheric environment, and develop energy-saving and environmental protection industries. [0003] Since coal contains a...

Claims

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Application Information

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IPC IPC(8): F23K1/00F23K3/00
CPCF23K1/00F23K3/00F23K2201/1006F23K2201/20
Inventor 徐文栋安然李凡张福泉张冠洲李俊英
Owner SHANDONG HUANNENG DESIGN INST
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