How to choose a drum dryer?

As an indispensable drying equipment in modern industrial and agricultural production, the selection process of drum dryer needs to consider multiple factors comprehensively. Here is a detailed purchasing guide:

1、 Clarifying material characteristics is the key first step

Different materials have completely different drying characteristics, which directly determines the configuration selection of the dryer. For high humidity materials such as sludge, fruits and vegetables, it is necessary to choose models with strong dehumidification systems; For thermosensitive materials such as traditional Chinese medicine and fungi, low-temperature drying equipment that can accurately control temperature must be selected. Granular materials such as grains require anti clogging design, while viscous materials such as sugar residue require anti sticking wall devices. Before making a purchase, it is essential to accurately grasp the initial and target moisture content of the material, and understand whether the material is prone to oxidation or flammability.

2、 The choice of heat source determines operating costs and environmental compliance

There are currently five main types of heat sources on the market: coal-fired heat sources, although having the lowest operating costs, have poor environmental performance; Natural gas heat source has the highest comprehensive cost-effectiveness, high thermal efficiency, and relatively clean; Electric heating is the most environmentally friendly and precise in temperature control, but it has a higher energy consumption cost; Biomass fuel is suitable for the resource utilization of agricultural waste; Steam or heat pumps are suitable for special process requirements. When making a choice, it is necessary to consider the local energy supply situation, environmental policies, and long-term operating costs comprehensively.

3、 Capacity demand should be based on the current and take into account the future

Drum dryers have everything from small equipment that can process hundreds of kilograms per hour to large equipment that can handle tens of tons. Small equipment is suitable for family farms or startups, medium-sized equipment meets the needs of most processing plants, and large equipment is designed specifically for large-scale production. When determining production capacity, it is necessary to consider both current actual demand and reserve space for future development. Choosing models with scalability is often more economical.

4、 The structure and material of the equipment affect its service life

High quality drum dryers are usually made of 304 stainless steel, which is particularly suitable for the food and pharmaceutical industry; Anti corrosion carbon steel can be used for industrial purposes to reduce costs. Good insulation design can significantly improve thermal efficiency, and the stability of the transmission system directly affects the service life of the equipment. In addition, the supporting dust removal and exhaust gas treatment system is crucial for meeting environmental protection requirements.

5、 The degree of intelligence reflects the progressiveness of equipment

Modern high-end dryers are commonly equipped with PLC control systems and touch screen operation interfaces, which can achieve intelligent functions such as drying curve storage and remote monitoring. Pay attention to the progressiveness of the control system when purchasing, and also investigate the after-sales service support such as installation, commissioning, operation training, etc. provided by the manufacturer.

6、 Investment return needs to be comprehensively considered

The initial investment for devices with different configurations varies greatly, ranging from tens of thousands to millions of yuan. Although coal-fired equipment has a low purchase cost, it may face pressure for environmental protection renovation; Electric heating equipment requires a large initial investment but is easy to maintain. It is recommended to calculate the comprehensive usage cost based on the expected service life and output, and choose the plan with the best return on investment.

When making a purchase, it is recommended to conduct on-site inspections of multiple manufacturers, compare the actual operating effects of different devices, and prioritize selecting devices with modular design that are easy to upgrade in the later stage. Through systematic evaluation and comparison, it is certain that the most suitable drum dryer for one’s own needs can be selected.