Boiling type material drying method and special boiling kettle thereof

A drying method and boiling technology, which is applied in the directions of drying solid materials, heating to dry solid materials, drying, etc., can solve the problem that the internal space utilization rate of the drying drum is not high, which affects the improvement of the productivity of the drying operation, and the fluidized bed system The space utilization rate is not high, and the effect of reducing the difficulty of control and invalid internal friction, reliable drying operation and convenient control process is achieved.

Inactive Publication Date: 2014-03-26
SHANDONG PROVINCE METALLURGICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. For the drum drying method, the materials to be dried, such as pulverized coal and mineral powder, etc., are not in sufficient contact with the drying medium, such as hot air, and the utilization rate of the internal space of the drying drum is not high, seriously Affects the improvement of drying operation productivity
[0005] 2. For the fluidized bed drying method, the air supply conditions match the humidity and particle size of the materials to be dried, such as pulverized coal and mineral powder, etc., in a very narrow range. When the materials to be dried, such as When the initial conditions such as humidity and particle size of pulverized coal and slag fluctuate, especially when the frequency of fluctuation is high, it is very difficult to achieve its ideal working state. Therefore, many fluidized bed systems are abandoned for this reason
[0006] At the same time, limited by the formation conditions of the fluidized bed, the contact between the dried materials, such as pulverized coal and mineral powder, etc., and the drying medium, such as hot air, is still insufficient, and the space inside the fluidized bed system The problem of low utilization rate still exists, which can also seriously affect the improvement of drying operation productivity
[0007] 3. The control of the final moisture of the dried object by the existing drying method is determined by multiple interrelated factors. Therefore, once the initial conditions change, not only the adjustment time of the system is long, but also the adjustment process is very complicated, which affects the system. operational reliability

Method used

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  • Boiling type material drying method and special boiling kettle thereof
  • Boiling type material drying method and special boiling kettle thereof
  • Boiling type material drying method and special boiling kettle thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Example 1, such as figure 1 with Figure 4 shown.

[0052] exist figure 1 Among them, 1 means boiling furnace; it is divided into material boiling or vigorous tumbling section 1-2 and air inlet equalizing section 1-3 by orifice plate 1-1. 2 means flue gas furnace, which includes combustion chamber 2-1, fuel The inlet channel 2-2, the combustion-supporting gas channel 2-3 and the temperature-adjusting mixed gas channel 2-4; the flue gas furnace 2 and the fluidized fluidized furnace 1 have an integrated structure to reduce heat loss and pressure loss of the pipeline; the flue gas furnace The air outlet of 2 and the air inlet of fluidized fluidized furnace 1 have the shape of combining two into one, so that the hot air generated by the flue gas furnace directly enters the air inlet and pressure equalization section 1-3. 3 is the discharge port of fluidized fluidized furnace 1, which is set on the material The lower part of the boiling or vigorous tumbling section 1-2. ...

Embodiment 2

[0058] Example 2, such as figure 2 shown.

[0059] This embodiment has carried out some changes on the basis of embodiment 1:

[0060] 1. The second flue gas furnace 22 and its hot flue gas delivery channel 23 are added; here it needs to be added that although the function of the second flue gas furnace 22 to supply hot air can be replaced by the split flow of the flue gas furnace 2, but , In order to improve the controllability of the hot air flow, the measure of setting the second flue gas furnace 22 is taken.

[0061] 2. The inlet 24 of the secondary hot air is set from the middle or above the middle part of the material boiling or violent tumbling section of the boiling kettle, and the hot air from the second flue gas furnace 22 is passed through the secondary hot air by using the annular passage 25 The inlet 24 is sent to the boiling kettle to strengthen the drying capacity of the system, especially to prevent condensation at the receiver, especially the second receive...

Embodiment 3

[0063] Example 3, such as image 3 with Figure 5 shown.

[0064] This embodiment has carried out some changes on the basis of embodiment 2:

[0065] 1. The powerful blast port 26 and the powerful blast channel 27 are added;

[0066] 2. With embodiment 2 ( figure 1 or figure 2) in the orifice plate 1-1 is changed to the orifice plate 28 in this embodiment. pass image 3 with Figure 5 , especially through Figure 5 , it can be seen that: the orifice plate 28 has a sandwich structure, and forms a cavity 29 between its upper and lower plates; the orifice plate 28 is shaped on two kinds of holes: the hole 30 and the hole 31, and the hole 30 only controls the boiling of the material Or the violent tumbling section 1-2 is connected with the air inlet equalizing section 1-3, and the hole 31 only connects the boiling or violent tumbling section 1-2 of the material with the cavity 29; , so, the wind that enters from the powerful blast port 26 will directly enter the section...

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PUM

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Abstract

The invention provides a boiling type material drying method and a special boiling kettle thereof, and belongs to the technical scheme of drying methods and drying equipment. The boiling type material drying method and the special boiling kettle thereof can increase the utilization rate of a drying space, improve drying intensity and productivity and improve controllability of a drying system. According to the technical scheme, the boiling type material drying method includes the step of arranging of a power device, a measuring and control device and a pipe network, and is characterized in that the boiling kettle is arranged so that materials can be dried in the boiling kettle in a boiling state, and a first material collecting device and a second material collecting device are arranged. The boiling type material drying method and the special boiling kettle thereof are suitable for the technical field of large-scale material drying.

Description

technical field [0001] The invention relates to a boiling material drying method and a special boiling kettle thereof, belonging to the technical field of drying methods and drying equipment. Background technique [0002] The drying operation of materials, such as the drying operation of pulverized coal and (iron) ore powder, etc., is one of the general material pretreatment processes. Currently used drying methods mainly include drum drying and fluidized bed drying. [0003] The main problem that prior art exists is: [0004] 1. For the drum drying method, the materials to be dried, such as pulverized coal and mineral powder, etc., are not in sufficient contact with the drying medium, such as hot air, and the utilization rate of the internal space of the drying drum is not high, seriously Affects the improvement of drying operation productivity. [0005] 2. For the fluidized bed drying method, the air supply conditions match the humidity and particle size of the material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B3/08
Inventor 于国华钱舵贾利军张相国王冰魏树超陈诚钱纲
Owner SHANDONG PROVINCE METALLURGICAL ENG CO LTD
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