LPG 喷雾干燥(中英) 说明书

LPG- 喷雾干燥机

Spray Dryer

使用说明书Operation instruction

People’s Republic of China

目录

Catalogue

1.概述

General (1)

2.工作原理

Working Principle (1)

3.设备特点

Equipment Features (2)

4.干燥机组的安装

Dryer Installation (3)

5.离心喷雾干燥机操作程序

Operation Procedure of Spray Dryer (3)

(1) 开车前的准备工作

Preparation Before Start-up

(2) 开车运行

Start-up

(3) 停车

Stop Running

(4) 停车后的清洗

Cleaning After Stop

6.高速雾化器的维修与保养

Maintenance of High-speed Atomizer (4)

7.故障分析与排除

Fail Analysis and Repair (6)

8.安全生产

Safety Operation (7)

9.离心喷雾自控系统

Auto-control System of Centrifugal Spray (8)

10.喷雾干燥塔中主要易损件

Main Wearing Part of Spray Drying Tower (9)

附：电气原理图；

Attachment: Electrical Principle Dwg.

1.概述General

LPG型高速离心喷雾干燥机，主要用于使稀溶液、乳浊液、悬浮

液、浆状物料、熔融液及中药浸膏等物料喷雾干燥成干粉。具有速度快、效率高、工序少等优点。对热敏性物料可保持其色、香、味。干粉溶解性好，纯度高，该型喷雾干燥机可广泛用于塑料、染料、轻工业、化肥、食品、医药，特别是热敏性物料，如牛奶、药物、染料等工业领域广泛使用。

LPG High-speed Centrifugal Spray Dryer mainly used for the drying of materials such as weak solution, emulsion, suspending liquid, slurry, melt-water, Chinese herbal extract etc. to dry powder. It has advantages of high speed and efficiency as well as less process. For thermal sensitive material, it can keep its color, scent and taste. Dry powder has good solubility and high purity. This kind of dryer has widely application on industries such as plastic, dye stuff, light industry, fertilizer, food-stuff, pharmaceutical especially for heat-sensitive materials such as milk, medicine, dye stuff etc.

2.工作原理Working Principle

LPG喷雾干燥机是将需雾化的料液直接干燥成固体粉粒的过程。干燥是传热和传质同时进行的过程。在干燥过程中，前一种是液滴中水分的蒸发，主要是热交换过程。当进入降速干燥阶段后是颗粒的干燥，主要是扩散过程。物料离开干燥室时所含的水分与前一瞬时所接触的空气的相对湿度有关，物料的最终产品水分不可能低于该相对湿度下相应的平衡水分。产品的最终水分应受与其最后接触空气的相对

湿度控制，是扩散控制中的湿度梯度控制，这三个控制阶段构成了喷雾干燥过程。

The drying procedure of LPG spray dryer is the drying from atomized slurry to powder directly and the heat transfer and medium transfer are carried out at the same time. During drying, water evaporation of droplet is in the process of heating exchange. When it is in lower speed granule drying, it starts the process of diffusion. The water content of discharged material from drying chamber is related to the previous air relative humidity. Final moisture of material must not lower than the balance moisture under relative humidity. Final moisture is controlled by the last time moisture humidity contacting with air and is a humidity gradient control of diffusion control, and these three control stages constructed spray drying process.

已经加热至需要温度的空气以切线方向进入热风分配器，经热风分配器作用后的空气均匀地、螺旋式地进入干燥室，同时料液由雾化器雾化为伞状细小的雾滴，当雾滴与热空气混合接触后传热传质，这时高温气流与高含水率的雾滴相遇，水分迅速汽化。干燥后产品从燥室锥底进入风管随空气流入旋风除尘器,大部分物料被分离，少量细粉继续进入布袋除尘器被收集,最后尾气由排风机排出系统外。

Heating air to required temperature and entering into hot air distributor in a tangent direction, and then evenly goes into the dryer chamber in a screw type. At the same time slurry is atomized to