Rotary disc dryer - 30 years of mature technology
In this paper, published in the June 2021 international journal of aquatic feed
A in the market has more than 30 years history of mature technology
Have a wide selection of the dryer on the market;Before make a choice, what important criteria to consider?
If you are considering buying a high reliability, high humidity is easy to control, energy efficiency, product replacement fast drying machine, so this article can help you make the best decision.
Although there are different options on the market, but this article will focus on with over 30 years of history, the mature technology of rotary disc dryer.
Although the main functions of the dryer is moisture evaporation;But the quality of evaporation must also be at the lowest energy consumption evenly throughout the process;And can fast conversion products, minimize downtime and improve the efficiency of drying.
Figure 1. The rotary disc dryer air flow
Figure 2. The target humidity changes over time
Reliable and simple water control
In the past 40 years, should be greatly aquatic feed and pet food industries design and manufacture equipment and production line.Appropriate big since 2011 is the rotary disc dryer technology, through the effort of our expert team of engineers, and improved the rotary disc dryer technology, further improve the efficiency of the drying process.Compared with the traditional drying machine, rotary drying machine has excellent performance.Main advantages are:
, all products are after the same drying process, so drying is very uniform and stable.
Optimization of heat transfer, flow and reduce energy consumption.
, in the case of controllable quick replacement products to reduce pollution.
The influence of moisture content of product
In you select the appropriate drying machine for production and water control is one of the most critical choice basis;Moisture in the quality of your products, the production cost and profit are directly affected.A plane is uniformity of moisture control, timely and consistent drying results will determine the target average moisture content.The closer the average moisture content to allow the highest water content, will reduce the raw material weight loss caused by excessive and dry, so as to create more profits for your company.
In a cylindrical rotary drying machine, when the tray gently sloping materials fall into the bottom of the platform, the product will be on multiple platforms rotate 360 °, and in every time.By rotating the product, the product is located in the fixed airflow, so all the products have the same drying conditions, so as to make the products with the moisture of uniform and consistent quality.In general, uniform drying will use less raw materials and reduce energy costs.
Improve the efficiency of drying machine, to save energy cost
As is known to all the water evaporation or drying is an energy-intensive process.The drying process inevitably needs to provide enough energy for evaporation.The efficiency of the dryer is input by the moisture evaporation when energy were determined.
Dry air to flow direction through the multi-layer feed in the rotary dryer, in order to realize the maximum heat transfer, which produce low exhaust temperature;Coupled with dry air recirculation will reduce the displacement and energy efficiency.
Another option is to recycle of energy saving cooling air.Use of cooling air supplement dryer can reduce exhaust air, thereby reducing control odor.In addition, all of the heat generated by the product cooling will provide evaporation drying machine, the combination again to improve the efficiency of drying machine and reduce energy consumption.
The current feed market trend is the requirement of customized product, this leads to increased frequency change formula.This requires manufacturers have a good and tight production schedule, maximum time to keep the machine running.To use the principle of first in first out (FIFO) at the same time, to ensure that the product mix mixed.
In figure 3.Customer site rotary disc dryer (TT - 300-4-4 type)
Figure 4.Appropriate development of the rotary disc dryer control system
Simple operation control system development
In 2020, introduced a new moisture control system should be big.The control system includes:
Air volume and temperature control - dryer control principle will be the overall performance of the key factors.In order to make the rotary disc dryer in the uniform drying performance efficiently, we borrowed by the control of air volume and temperature to control the energy absorption of the product.
Moisture evaporation calculation - rotary drying system can accurately control the products of the company moisture and track any changes in the parameters in the process of production.This will help the operator quickly and efficiently achieve and maintain the humidity.
Energy efficiency indicator - through automatic calculation, the operator can see the efficiency of the drying process, and abnormal digital quick action.Power control is drying control
Take full control of your energy consumption of the factory
According to your expectations of ideal drying machine, you may need to find in the market of different drying pause.Dryer is a huge investment, as well as your equipment factory in high energy consumption.
Appropriate large consider all your technical requirements, such as the moisture content uniformity, high efficiency of energy transmission, easy operation and minimum downtime, allowing you to choose to suit your industry rotary disc dryer.
product
Moisture dry evenly - vertical drier (used in food, aquatic feed and animal feed and chemical industry, plastic industry)
albert_wang
Food science, graduated from national Taiwan ocean university with a master of science degree (MSc) British veterans have profound scientific background, and the use of this method based on scientific knowledge to customers.A year of experience in sales, technical and Marketing Department, combined with ongoing communication with customers, make he mastered the feed machinery and its operations.
