Name: Pilot and Industrial Spray Dryer
Brand: Dongguan Longly Machinery Co., Ltd.

Pilot and Industrial Spray Dryer

A spray dryer is a device that simultaneously completes drying and powder formation from a liquid solution. Liquid materials are fed into the spray drying chamber via a feed pump and get atomized through either nozzles or a high-speed rotary disc(atomizer). This process significantly increases the liquid's surface area contact with the continuously hot air, finally instantaneous drying and forming powders. The processed powders are collected through the bottom of the drying tower by the separator such as cyclone, and emission of exhaust gases are expelled by the induced draft fan. It is widely used in many fields such as new energy materials, metal materials, chemical materials, food, and pharmaceuticals.

● Spray Dryer M Series, for pilot scale of multiple varieties of products: the equipment is compact but it can deal with a large capacity, suitable for those requiring large capacity in a limited space. The recycling of heat dissipation gas is adopted for energy-saving and environmental protection.

● Spray Dryer B Series, for mass and industrial production: it is designed with a high level of recycling and energy-saving to reduce the loss of unprocessed products. Supported by our robust technical team, we deliver comprehensive services in process control and automation systems.

If processing high-purity products, the heat-resistant HEAP filters (up to 500°C) are optional. The configuration, including system flow, atomization mode, powder collection mode, materials, and heat methods, can be tailored to the customer to meet specific requirements.

Specifications of Pilot and Industrial Spray Dryer

1. Centrifugal atomizer:

The specially designed centrifugal atomizer is suitable for producing particles from 10μm to 150μm. The particle size can be adjusted by the design of the atomizer disc and the rotation speed. Compared with other spray modes, the centrifugal atomizer will generate powders with narrower particle size distribution(a high peak) and more free fluidity.

2. One-fluid nozzle:

The one-fluid nozzle mode uses liquid pressure to generate kinetic energy. When the pressure increases, the liquid flow rate increases, and the size of the spray droplets will decrease accordingly. According to the different liquid properties and operating conditions, we provide a series of nozzle apertures for your choice.

3. Two-fluid nozzle:

The two-fluid nozzle is recommended when making powders less than 20μm. The two-fluid nozzle consists of two channels, the liquid, and compressed air. The high-speed airflow generated from the compressed air channel instantly atomizes the products from the liquid channel into fine particles and forms powder in particle sizes to ten microns or even single microns after drying, meeting customers' requirements for particles extremely small.

The dry powder obtained by the atomization using a two-fluid nozzle has uniform particles with good fluidity, and its original characteristics remain. This type of atomization is easy to operate and maintain due to its simple structure. In addition, for liquids with high concentration and viscosity, our independently developed nozzles are available to prevent clogging.

Features of Pilot and Industrial Spray Dryer

1. High-quality powder: the particles after processing are close to spherical, with good fluidity and no deterioration.

2. Energy saving: the emission heat dissipation gas is recycled for high efficiency and energy-saving.

3. Extended service life: all parts in contact with the products can be made of stainless steel.

4. Fast drying speed: 95%-98% of the liquid can be evaporated instantly.

5. Easy maintenance: the rotary atomizer is directly connected to the motor. Since there is no speed increase device, it is easy to maintain.

6. Environmental protection: Our unique environment-protective design can reduce carbon dioxide emissions with less pollution.