Main Advantages of the Microwave Heating
- Speeding up: minutes instead of hours!!
- Volume Energy transmission - cold vessel
- ENERGY Savings, Room Savings
- Efficiency 70%
- Automatization
- Safety *
- Environment *
* Comparing to the processes using the combustion
REFERENCES
datasheet
SUMMARY OF ADVANTAGES
Timesaving
• minutes instead of days
Improved process control
• homogenous temperature
• real-time process control
Economy
• minimum time
• minimum floor space
• minimum heat losses
PARAMETERS
SUMMARY OF ADVANTAGES
Timesaving
• minutes instead of days
Improved process control
• homogenous temperature
• real-time process control
Economy
• minimum time
• minimum floor space
• minimum heat losses
PARAMETERS
| Length | 12817 mm |
| Width | 2500 mm |
| Height | 4730 mm |
| Batch | 2 pallets 1250 kg each |
| Microwave power max | 96 kW |
| Electric power requirements max | 160 kW |
| Pressurized air | 5 to 8 bar |
| Weight | 11215 kg |
| Control system | Siemens Simatic S7 |
| Certification |
MICROWAVE PREHEATING OF NATURAL RUBBER AND RUBBER MIXTURES
METHOD
METHOD
The conventional method of pre-heating rubber is using a storage room heated to 80°C, where the material is stocked for days. Huge energy losses, significant floor space requirements, and difficult production planning are common characteristics of the method. Measurements revealed the following parameters of pre-heating rubber on pallets (800 kg of rubber bales on each pallet in this experiment) using the conventional method without microwaves:
| Room heated to 80°C | 0 hours | 24 hours | 72 hours |
|---|---|---|---|
| Temperature near surface | 27°C | 53°C | 63°C |
| Temperature near center | 27°C | 30°C | 42°C |
| Temp. homogeneity | ±1°C | ±23°C | ±21°C |
The ROmiLL method based on university research and verified with a leading tire manufacturer uses microwaves to transmit the energy. Measurements revealed the following parameters of pre-heating rubber on pallets (1250 kg of natural rubber bales on each pallet in this experiment) using the ROmiLL MW96 microwave line:
EXPERIENCE
| MW96 | 0 minutes | 52 minutes |
|---|---|---|
| Temperature in any point within the material | 20°C ±5°C |
60°C ±5°C |
EXPERIENCE
The actual heating cycle time depends on the starting temperature and the target temperature; real life experience from a tire manufacturer shows cycle times about 30 minutes. In extremely low winter temperatures the time of course increases.
The arrangement with loading and unloading conveyors allows the operator to prepare the next batch already during the heating of the previous batch, so minimizing manipulation times. Throughput in real-life application is 80 metric tons of rubber per day.
OPERATION
OPERATION
The equipment can be operated by staff without any specific qualification after a brief training, e.g. by a warehouse forklift operator. Displayed messages are available in several languages.
INVESTMENT
INVESTMENT
The equipment is designed for industrial usage and expected long life in 24/7 operation. A significant portion is made of stainless steel. Consumables – magnetrons – are easy to replace by a trained electrician. Specification of spare parts, if you ever need them, is part of the documentation. The control system monitors proper function of the equipment and reports any deviations. Records (logs) are available with detailed information about the operation.
SERVICE
SERVICE
The equipment doesn’t require any unusual service. However, to ensure maximum satisfaction of the users, the manufacturer offers Service Agreement with guaranteed response times, prices, and preliminary maintenance.
