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Centrifugal atomizing nozzle and spray dryer

A centrifugal atomization and spray dryer technology, applied in the direction of spray evaporation, spraying device, spraying device, etc., can solve the problems of producing special-shaped and fine powder, microsphere bursting, etc., to reduce the formation of special-shaped particles and reduce particle breakage probability, the effect of improving sphericity

Inactive Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of the prior art, to provide a centrifugal atomizing nozzle that can be conveniently used in industry, and to solve the problems in the drying process when using a dryer containing the centrifugal atomizing nozzle for spray drying. Problems with bursting of microspheres, generation of off-shape and fines, and the ability to improve the sphericity of the obtained dry granules

Method used

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  • Centrifugal atomizing nozzle and spray dryer
  • Centrifugal atomizing nozzle and spray dryer

Examples

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Effect test

Embodiment 1

[0071] In this embodiment, the spray dryer provided by the present invention is used to dry the slurry used for preparing the catalyst. The spray dryer of the present embodiment contains such as figure 1 Centrifugal atomizing nozzle shown.

[0072] The catalyst slurry (the total content of kaolin and pseudo-boehmite is 40% by weight) is introduced into the centrifugal atomizing nozzle from the material inlet by a high-pressure pump, and the slurry is accelerated under the centrifugal force of the rotating disk at high speed, and then Spray from the atomizing hole into the tower body of the spray dryer to form a mist cone, wherein the cone angle of the mist cone is 120 degrees, and the tower body is filled with high-temperature hot air from the drying air distributor. At the same time, the protection wind is introduced from the protection wind inlet (1), and the protection wind is sprayed into the tower body to surround the fog cone through the protection wind guide pipe and t...

Embodiment 2

[0075] In this embodiment, the spray dryer provided by the present invention is used to dry the slurry used for preparing the catalyst. The spray dryer of the present embodiment contains such as figure 1 Centrifugal atomizing nozzle shown.

[0076] The catalyst slurry (the total content of kaolin and pseudo-boehmite is 40% by weight) is introduced into the centrifugal atomizing nozzle from the material inlet by a high-pressure pump, and the slurry is accelerated under the centrifugal force of the rotating disk at high speed, and then Spray from the atomizing hole into the tower body of the spray dryer to form a mist cone, wherein the cone angle of the mist cone is 110 degrees, and the tower body is filled with high-temperature hot air from the drying air distributor. At the same time, the protection wind is introduced from the protection wind inlet (1), and the protection wind is sprayed into the tower body to surround the fog cone through the protection wind guide pipe and t...

Embodiment 3

[0079] In this embodiment, the spray dryer provided by the present invention is used to dry the slurry used for preparing the catalyst. The spray dryer of the present embodiment contains such as figure 1 Centrifugal atomizing nozzle shown.

[0080] The catalyst slurry (the total content of kaolin and pseudo-boehmite is 40% by weight) is introduced into the centrifugal atomizing nozzle from the material inlet by a high-pressure pump, and the slurry is accelerated under the centrifugal force of the rotating disk at high speed, and then Spray from the atomizing hole into the tower body of the spray dryer to form a mist cone, wherein the cone angle of the mist cone is 100 degrees, and the tower body is filled with high-temperature hot air from the drying air distributor. At the same time, the protection wind is introduced from the protection wind inlet (1), and the protection wind is sprayed into the tower body to surround the fog cone through the protection wind guide pipe and t...

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Abstract

The invention relates to the field of spray dryers and discloses a centrifugal atomizing nozzle and a spray dryer comprising the same. The centrifugal atomizing nozzle comprises a centrifugal atomizer and a protection wind guide pipe, wherein the centrifugal atomizer is internally provided with an atomizing disc which is used for spraying materials into fog drips and provided with atomizing holes, and a material guide pipe connected with the atomizing disc and a material inlet; and the protection wind guide pipe is provided with a protection wind inlet and a protection wind spraying opening. The protection wind guide pipe is arranged around the centrifugal atomizer, so that protection wind sprayed by the protection wind spraying opening surrounds the fog-drip-shaped materials sprayed by the atomizing holes. When spray drying is conducted by adopting the dryer comprising the centrifugal atomizing nozzle, the problems that microspheres are burst, abnormal shapes and fine powder are produced in the drying process can be solved, and the sphericity of obtained dried particles can be improved.

Description

technical field [0001] The invention relates to the field of spray dryers, in particular to a centrifugal atomizing nozzle and a spray dryer. Background technique [0002] Spray dryer is a device that can complete drying and granulation at the same time. According to the process requirements, the pressure, flow rate and the size of the spray hole of the material liquid pump can be adjusted to obtain the required spherical particles in a certain size ratio. At present, spray dryers are widely used in chemical, pharmaceutical, food, water treatment and other fields. [0003] The spray dryer usually includes a spray drying tower, a hot air supply device (the hot air supply device includes a hot air distributor arranged on the top of the spray drying tower), an exhaust device and a liquid material atomizing device (arranged in the spray drying tower). The characteristic of the process is that the gas phase medium is filtered and heated, distributed through the hot air distribu...

Claims

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Application Information

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IPC IPC(8): B05B1/34B01D1/18
CPCB05B1/34B01D1/18
Inventor 吕庐峰张翊王子军张久顺秦娅李学锋何金龙田志鸿刘亚林刘凌涛
Owner CHINA PETROLEUM & CHEM CORP
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