Segmented water removing and drying system for high-humidity coal and application method for segmented water removing and drying system

A drying system and high-humidity technology, applied in the direction of drying machine combination, drying solid materials, heating to dry solid materials, etc., can solve the problems of high energy consumption and changing the physical characteristics of filter cakes, so as to save energy consumption and increase the temperature of raw coal , to avoid the effect of energy consumption

Active Publication Date: 2015-12-16
SHANDONG UNIV
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Problems solved by technology

The patent with application number CN201210221818.7 uses microwave drying to dry the filter cake with a moisture content of 30%. However, the moisture is removed in gaseous form, which obviously consumes a lot of energy, and the filter cake will be broken and changed during the dehydration process. some physical properties of the filter cake
In addition, the patent appli

Method used

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  • Segmented water removing and drying system for high-humidity coal and application method for segmented water removing and drying system
  • Segmented water removing and drying system for high-humidity coal and application method for segmented water removing and drying system

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[0041] Example 1

[0042] figure 1 It is the structure diagram of the segmented dehydration and drying system in the present invention. The system includes a blanking mechanism for blanking (raw coal, particle size between 30-100mm) and preheating, and the blanking mechanism is a raw coal bin set up vertically 1. A heat exchange pipeline is arranged along the inner wall of the raw coal bunker 1, and a condensate water collection tank 11 is arranged at the bottom end of the raw coal bunker 1, and the inlet end of the heat exchange pipeline is connected with the outlet end of the dehumidifying pump 8. A first microwave drying mechanism 2 is provided horizontally below the raw coal bunker 1. The first microwave drying mechanism 2 is provided with a horizontally arranged first conveying mechanism 3 for conveying raw coal to the inlet of the solid-liquid separation mechanism 5, solid-liquid separation The mechanism 5 is arranged vertically or obliquely, the end of the first conveying ...

Example Embodiment

[0065] Example 2

[0066] The segmented dehydration drying system includes a blanking mechanism 1, a first microwave drying mechanism 2, a first conveying mechanism 3, a solid-liquid separation mechanism, a second microwave drying mechanism 6 and a third conveying mechanism 7, in which the first microwave drying mechanism 2, The structures of the first conveying mechanism 3, the third conveying mechanism 7 and the second microwave drying mechanism 2 are the same as those in the first embodiment. The solid-liquid separation mechanism is a fourth conveying mechanism 14 arranged obliquely, and the fourth conveying mechanism 14 includes two Two rollers, a mesh conveyor belt is set between the two rollers, and a vibration motor fixed to the conveyor belt is set below the upper conveyor belt. When the coal material falls from the first conveyor 3 to the fourth conveyor 14, the fourth The conveying mechanism 14 conveys the coal to the third conveying mechanism 7. At the same time, the m...

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Abstract

The invention discloses a segmented water removing and drying system for high-humidity coal and an application method for the segmented water removing and drying system. The system comprises a discharging mechanism. A first microwave drying mechanism is arranged below the discharging mechanism and internally provided with a first conveying mechanism. A solid-liquid separation mechanism is arranged at the tail end of the first conveying mechanism. A second conveying mechanism is arranged at an outlet of the solid-liquid separation mechanism. A second microwave drying mechanism is arranged at the tail end of the second conveying mechanism. The segmented water removing and drying system has the beneficial effects that a microwave heating manner and a non-heating manner are combined with the water removing and drying technology, a heat water removing manner and a non-heat water removing manner are organically combined, water in coal is removed in the form of a liquid state on the basis of low-rank coal microwave drying, and energy consumption of a microwave drying system is greatly reduced; raw coal is heated through the reutilization of residual heat and waste heat generated by the drying system, and the economical efficiency of the whole drying system is improved; and after deep drying is carried out, utilization of later finished coal is more flexible and safer, and the processing cost is reduced.

Description

technical field [0001] The invention relates to coal drying, in particular to a segmental dehydration drying system for high-humidity coal and its application method. Background technique [0002] In recent years, from the perspective of my country's primary energy consumption structure and trends, although the proportion of low-rank coal in my country's primary energy consumption has declined, its production and consumption continue to increase, and the shortage of high-rank coal resources has gradually become a problem that my country must face. outstanding issues. The low-rank coal reserves in my country account for 40% of the total coal reserves, of which lignite accounts for about 12.8% of the total coal reserves in my country. Low-rank coal is playing an increasingly important role in the energy supply process. [0003] High-moisture coal mainly refers to (low-rank coal with high moisture content (30%-65%)) which is not conducive to long-distance transportation and sto...

Claims

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Application Information

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IPC IPC(8): F26B20/00F26B7/00F26B3/347F26B5/08
Inventor 宋占龙赵希强朱俊志姚连升井传明王文龙毛岩鹏马春元陈磊
Owner SHANDONG UNIV
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