Method for making nitre and drying and drying apparatus thereof

A drying equipment and drying technology, applied in drying solid materials, lighting and heating equipment, heating to dry solid materials, etc., can solve the problems of high energy consumption, affecting the appearance of Yuanming powder products, and reducing the particle size of Yuanming powder. , to achieve the effect of low energy consumption, stable drying effect and small crushing

Inactive Publication Date: 2008-10-01
江苏白玫化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional drying of sodium sulfate is mainly done through airflow drying, which has the following disadvantages: firstly, it consumes a lot of energy, and it needs a lot of hot air to drive the sodium sulfate to flow from bottom to top in the airflow drying tube ; Secondly, due to the high-speed flow of sodium sulfate in the air-flow drying tube, the friction between the particles makes the particle size of sodium sulfate smaller, which affects the appearance of sodium sulfate products.

Method used

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  • Method for making nitre and drying and drying apparatus thereof

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Effect test

Embodiment 1

[0020] The drying equipment includes a fluidized bed dryer 1, a hot air blower 2 and an internal cooler 3. The fluidized bed dryer 1 is divided into a drying section and a cooling section. The section is provided with a cold air inlet 6, a material outlet 7 and an exhaust gas outlet 8, the hot air blower 2 is connected to the hot air inlet 5 through a pipeline, and the cold air blower 3 is connected to the cold air inlet 6 through a pipeline.

[0021] When drying, firstly, in the drying section, the wet nitric acid entering the fluidized bed dryer exchanges heat with the hot air entering the fluidized bed dryer, and secondly, the dried hot nitric acid enters the cooling section, and the hot nitric acid and the incoming cold air Heat exchange is carried out, and finally, the cooled cold nitric acid is discharged from the fluidized bed dryer.

[0022] In a method for drying nitric acid of the present invention, the moisture content of wet nitric acid is 2.0%, the temperature of ...

Embodiment 2

[0024] The drying equipment includes a fluidized bed dryer 1, a hot air blower 2 and an internal cooler 3. The fluidized bed dryer 1 is divided into a drying section and a cooling section. The section is provided with a cold air inlet 6, a material outlet 7 and an exhaust gas outlet 8, the hot air blower 2 is connected to the hot air inlet 5 through a pipeline, and the cold air blower 3 is connected to the cold air inlet 6 through a pipeline.

[0025] When drying, firstly, in the drying section, the wet nitric acid entering the fluidized bed dryer exchanges heat with the hot air entering the fluidized bed dryer, and secondly, the dried hot nitric acid enters the cooling section, and the hot nitric acid and the incoming cold air Heat exchange is carried out, and finally, the cooled cold nitric acid is discharged from the fluidized bed dryer.

[0026] In the drying method for producing nitric acid of the present invention, the moisture content of wet nitric acid is 3.0%, the tem...

Embodiment 3

[0028] The drying equipment includes a fluidized bed dryer 1, a hot air blower 2 and an internal cooler 3. The fluidized bed dryer 1 is divided into a drying section and a cooling section. The section is provided with a cold air inlet 6, a material outlet 7 and an exhaust gas outlet 8, the hot air blower 2 is connected to the hot air inlet 5 through a pipeline, and the cold air blower 3 is connected to the cold air inlet 6 through a pipeline.

[0029] When drying, firstly, in the drying section, the wet nitric acid entering the fluidized bed dryer exchanges heat with the hot air entering the fluidized bed dryer, and secondly, the dried hot nitric acid enters the cooling section, and the hot nitric acid and the incoming cold air Heat exchange is carried out, and finally, the cooled cold nitric acid is discharged from the fluidized bed dryer.

[0030] In a method for drying nitric acid of the present invention, the moisture content of wet nitric acid is 4.0%, the temperature of ...

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Abstract

The invention discloses a processed saltpeter drying method and a drying device thereof, comprising: through real time control of warm wind and cool wind in a dryer of a fluidized bed, drying anhydrous sodium sulphate with a certain volume of water entering the dryer of the fluidized bed which is divided into a drying section and a cooling section, in the drying section, wet saltpeter entering the dryer of the fluidized bed undergoes sufficient heat energy exchange with warm air entering the dryer of the fluidized bed, the dried material enters the cooling section for sufficient heat energy exchange with cool air entering the dryer of the fluidized bed, and cool saltpeter is discharged from the dryer of the fluidized bed for packaging. The method and device of the invention are provided with the following advantage of convenient to operate and manage with low energy consumption, low travel cost, good dry effect and stable dry effect.

Description

technical field [0001] The invention specifically relates to a drying method for producing nitrate and drying equipment thereof. Background technique [0002] The traditional drying of sodium sulfate is mainly done through airflow drying, which has the following disadvantages: firstly, it consumes a lot of energy, and it needs a lot of hot air to drive the sodium sulfate to flow from bottom to top in the airflow drying tube Secondly, due to the high-speed flow of the sodium sulfate in the air-flow drying pipe, the friction between the particles makes the particle size of the sodium sulfate become smaller, which affects the appearance of the sodium sulfate product. Contents of the invention [0003] The purpose of the present invention is to provide a drying method for making nitrate and its drying equipment, which can reduce energy consumption and operation cost. [0004] The technical solution of the present invention is that the drying method adopts a fluidized bed drie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B3/084
Inventor 孟献亮奚海李祥
Owner 江苏白玫化工有限公司
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