Introduction
Veneer drying is an important process before plywood manufacturing. Controlling veneer’s moisture content to Optimized value for each wood material is a key to make good adhesion characteristics at next plywood manufacturing process. For this purpose, humidity of the air in dryer is controlled and moisture content of veneer is adjusted.
Expected Benefits
- Increase Energy Efficiency of Veneer Dryer Process
- Reduce Operating Cost
- Improve Yield of Veneer for Plywood Manufacturing
- Improve Quality of Veneer for Plywood Manufacturing
Process Overview
In order to control veneer’s moisture content to optimized value from 6 to 20% for each wood material, humidity of the air in the dryer is measured and controlled from 30 to 40%. Temperature is controlled from 130 to 200 deg. C.
As the results, dry veneer with optimized moisture content is manufactured.
Solution Details
Field Data
Process conditions
| Humidity | 30 to 40 % |
|---|---|
| Temperature | 130 to 200 ℃ |
| Pressure | 20 to 40 mmH2O |
| Dust | Trace wood dust |
Measurement system
| Detector | ZR22G-040-S-C-E-T-T-E-A /CV |
|---|---|
| Converter | ZR802G-☐-☐-N-N /☐ |
| Flow setting unit | ZA8F-A*C |
| Pressure regulator | G7013XF or G7014XF |
| Air set | K9473XK |
Utilities
| Rated voltage | 100 to 240 V AC |
|---|---|
| Rated frequency | 50/60 Hz |
| Power consumption | 330 VA (Max. 800 VA) |
| Instrument air | 300 to 700 kPa |
Related Products & Solutions
-
Zirconia Oxygen/Humidity Analyzer ZR22G, ZR802G
This Oxygen concentration and humidity at high temperatures consists of a ZR22G detector equipped with a long-life and highly reliable zirconia sensor, and a converter ZR802G equipped with digital communication and data log functions.
ZR22G and ZR802G can be measured directly and continuously without a sampling device. It is easy to maintain and reduce operating costs by self-diagnosis of sensor deterioration (without using calibration gas )and replacing the heater assembly on site.
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