Understanding Rotary Oven and Its Applications

Ovens have been an integral part of industrial processing, each type of oven has its USP and provides the best result based on process, time, application, and material. Every verity of own has something different to offer but you cannot install all hence oven selection is key, you can visit our website www.kerone.com to get the best possible solution for your need. Here in this post, we are trying to discuss what is rotary dryers and where it finds application.

Wikipedia defines a rotary dryer as “The rotary dryer is a type of industrial dryer employed to reduce or minimize the liquid moisture content of the material it is handling by bringing it into direct contact with a heated gas.” However, the entire rotary dryer cannot be fit to this segment, because the type, constructional deviations, heating mechanism, control system, and firing type brings in the entire difference between two rotary dryers.

Rotary dryers are commonly constructed with a rotating cylindrical tube; industrial electric rotary ovens circulate material in circular motions within the heating chamber. As the procedure gets up to speed, the hearth can be rotated consistently, physically, and with the assistance of a pointer. The mechanical rotary ovens can be worked with single or various heat zones and the procedure including stacking and emptying happens in a solitary area.

The feed materials are gone through the pivoting chamber alongside a stream of hot gas with the assistance of rotary course dryers. The feed is raised by interior lifters or flights and afterward is dropped in a curtain from where it descends falling from the top, along the length of the dryer. The painstakingly structured trips for this situation are significant in forestalling asymmetric curtains. The materials inside move to start with one side of the dryer then onto the next because of the edge of the tendency of the drum and the rotational development of the equivalent. Some modern rotary ovens accompany twofold and triple pass units with each drum settled inside the past drum.

It is basic for the rotary oven makers to extensively assess the necessities during the creation procedure, which incorporate viewpoints like creation objectives, part mass, height, part setup and development, office area, and temperature profile.

Rotary dryer applications:

  • Fiber
  • Food
  • Powder Coating
  • Epoxy Curing
  • Composites Curing
  • Materials
  • Printed Circuits
  • Paint and Coatings
  • Piece of clothing synthetic curing
  • Stain preparing
  • Polymer Sheets
  • Carbon composites
  • Fired center heating
  • Curing of GRP and different composites
  • Polymer curing
  • Polyurethane froth curing
  • Aviation
  • PTFE, elastic, silicone, nylon curing
  • Polymerization
  • Car battery plates
  • Fireworks and Explosives
  • Form Dying
  • Solid curing, and some more

At KERONE, we manufacture both the type of heaters and help clients to choose the best heater/dryer based on the process need, in case of any information and query please contact us at info@kerone.com.

Why Maintain a Uniform Temperature within the Dryer

Quality of product being dried depends on the time and amount of heat they are exposed to; heating temperature plays a crucial role in the overall development of products within the oven, hence stable temperature is key to success here. Temperature uniformity doesn’t only mean maintaining the same temperature across but it means having the desired temperature across every section of the oven with the same consistency throughout its operational time.

How can we achieve this consistency? The answer is very simple just by reducing the temperature fluctuation but the implementation of the same is complex. One of the ways to reduce this fluctuation is reducing temperature losses by using proper insulation of the chamber using reliable material and methods. Continuously monitoring and controlling is key for the implementation of the dryer with uniform temperature.

Kerone’s dryer is built with superior quality materials with cautiously taking care of each and every required measure; secondly, all dryers are fitted with an intelligent feedback loop with various sensors fitted at different sections for monitoring these measured temperatures are fed to correction unit; this correction unit compares the deviation and accordingly decides to increase or decrease firing to maintain the ultimate temperature stable. Kerone implements even really complex control mechanisms as well based on the customer’s process and product requirements.

Uniformity with Temperature brings in various advantages:

Consistent Product Quality:

Maintaining minimum temperature deviation ensures every piece of the product is treated with the same temperature hence quality will be the same, also too much deflection in drying temperature sometimes results in compromised product quality. Heat sensitive materials might result in a lot of wastage.

No or less re-processing:

If we fail to maintain uniformity it might result that some materials are not processed as desired and this might require refeeding for processing. Many heat-sensitive materials will not allow this as well.

Fewer Losses and Wastage:

Materials treated in uniform temperature always attain better quality, however fluctuating temperature results in too hot and too cold-processed material when you try reprocessing them they over dry and loose its effectiveness, quality and result in unusable and results in the increase of waste.

How to maintain uniform temperature:

There are multiple ways to attain uniform temperature across oven, insulating is one of them:

Controlled Air Flow:

The volume and direction of airflow inside an oven influence the temperature consistency. A high volume of air is alluring, as the higher the volume, the better the warmth consistency. In a perfect world, airflow inside a stove arrives at all pieces of the oven similarly. This airflow can be either horizontal or vertical however should be steady to continue a steady temperature.

Insulated walls to minimize losses:

An oven’s insulation shifts in thickness as indicated by the oven’s temperature and consistency prerequisites. Additionally, utilizing extraordinary boards and unitized development decreases an oven’s through-metal warmth misfortune, adding to more prominent warmth consistency.

Air Distribution:

Appropriately positioned openings help keep up positive air pressure inside an oven, decreasing the danger of cool air leaking through the entryway seals. Before entering the work chamber, new, cool air should go through heating components and blend in with hotter, recycled air. This blending forestalls layers of various temperatures inside an oven.

Drying in Pharmaceutical Industries

Drying plays vital role of life saver to many industrial process then how it cannot be mentioned for the industry which help many living things to save their life and keep them healthy. Yes, you got it right, in this article I will try to jot down the role and importance of drying as process in pharmaceutical industries.  All lifesaving drugs processed in the pharmaceutical industries needs to go through multiple drying stages as the any microbial infection, thermal decomposition, contamination or unremoved organic solvent may damage the quality of product, this might result in fatal effect on the life of consumer. This industry is very quality intensive industry hence all the process equipment and dyers required must be of high quality and meet the industry standard.

At Kerone, we are having immense experience in handling such need for such high quality and precise processing industries, with our custom designed and built dryers and process equipment.

Pharmaceutical dryers should be of high standard and sophisticated with varying temperature range and types of either batch or continuous type. Basically there are three subsequent stages in non-liquid drugs 1) Synthesis of intermediate products 2) Final synthesis 3) drug dosage forms and these stages require drying and/or preheating before or after the process.  

Substances dried in pharmaceutical industries are classified in three groups: 1) Granular material 2) Pastelike Material 3) Solution and suspensions. Special type of dryer is required for drying of these type of material hence it becomes very critical to identify the type of material first and then the type of dryer required for it. Selecting appropriate dryer is necessary for the success of process, below is the small classification:

  1. Granular Material: Convective dryers of variant tray, ban, fluid bed, flash, or any other custom design dryers. Also, vacuum dryers and paddle dryers are too suitable.
  2. Pastelike Material: Tray dryer, band dryers, spin-flash dryer and spray dryers are suitable.
  3. Solution and suspensions: Freeze-dried 

Further selection of dryer is based on following components:

  • Size of Particle
  • Thermal Property
  • Heat sensitivity
  • Moisture contains
  • Absorption rate
  • Sorptive properties and etc.