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Slewing drum shaped multi-pipe drying mechanism and its use in drying water-containing lignite

A drying device and rotary drum technology, applied in the direction of drying gas arrangement, drying solid materials, non-progressive dryers, etc., can solve the problems of not being suitable for drying lignite rich in water, shorten heating time, increase heat transfer coefficient, easy flow effect

Inactive Publication Date: 2009-08-05
SHANGHAI ZEMAG MINDAC MACHINERY EQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional drying technology is not suitable for the drying of lignite rich in water

Method used

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  • Slewing drum shaped multi-pipe drying mechanism and its use in drying water-containing lignite
  • Slewing drum shaped multi-pipe drying mechanism and its use in drying water-containing lignite

Examples

Experimental program
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Embodiment 1

[0033] Example 1: Model selection and main parameters of lignite drying equipment with an annual output of 250,000 tons of lignite designed by the present invention.

[0034] Description of the working principle (see figure 1 , 2 ):

[0035] 1. The lignite (or other water-rich materials) with a water content of 15wt% to 50wt% and a coal particle size of <6.3mm (or other water-rich materials) can be dried to a product with a water content of ≤8% (or Dry to the moisture content of coal particles ≤ 3% as needed). The drying heating medium adopts low-pressure steam, and the indirect drying method is completed.

[0036] 2. Feeding particle size control. The lignite and coal particles with a water content of 35wt% at room temperature from the boundary area are 20-50mm. After entering the reversible hammer crusher, they are hit by the high-speed rotating hammer to the counterattack plate, and the coal particles are crushed to ≤6.3mm. The water content is 35%, and it is used as t...

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Abstract

The invention provides a rotary drum-type multi-tube dryer which can dry water-containing brown coal or other water-containing materials. The drying of the materials in the dryer is safe, reliable and efficient. The dryer mainly comprises a feed inlet, a coal-particle distributor, a high-efficiency heat-transfer internal part of a tube bundle, a dryer with build-in spiral guide vanes, a tube-type steam distributor, a rotary drum-type outer cylinder, a sealing of the rotary drum-type outer cylinder, a driver of the rotary drum-type outer cylinder, a stepless speed regulator, an inclination adjustor of the rotary drum-type outer cylinder, an electric motor, an explosion-proof gas control system, a steam addition system, a condensing-liquid reclamation device, a gaseous dust reclamation device and a support piece. Brown coal (or other water-containing materials) with the water content of 15 wt percent to 50 wt percent and the coal particle size smaller than 6.3 mm can be dried into moulded coal with the water content equal to or smaller than 8 wt percent or powder coal with the water content equal to or smaller than 3 wt percent by the dryer.

Description

technical field [0001] The invention relates to a drying process and drying equipment for materials with high water content, in particular to the drying of lignite rich in water content of 15wt%-50wt% and a rotary drum-shaped multi-tube drying device used. economic value and environmental protection and social benefits. Background technique [0002] Water-rich lignite is a coal with a low degree of coalification. It is characterized by moisture in the range of 15wt% to 50wt%, high porosity, high volatile matter, low calorific value, oxygen content as high as 15wt% to 30wt%, and strong chemical reactivity. The thermal stability is poor, and the lump coal is seriously broken when heated. It contains different amounts of humic acid. The humic acid content is 38.67% in the Late Tertiary, 12.02% in the Early Tertiary, 15.83% in the Late Jurassic, and 15.83% in the Late Jurassic. was 5.29%. It is easy to be weathered and deteriorated when stored in the air, broken into small pi...

Claims

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Application Information

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IPC IPC(8): F26B11/04F26B3/02F26B21/00
Inventor 汪寿建傅敏燕林彬彬单育兵刘亦武李景懿傅校英
Owner SHANGHAI ZEMAG MINDAC MACHINERY EQUIP
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