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Energy-saving MDF Continuous Hot Press Machine with Waste Heat Recovery System

Name: Energy-saving MDF Continuous Hot Press Machine with Waste Heat Recovery System
Brand: MINGHUNG
Rating: 5.0 (29 reviews)

The waste heat recovery system efficiently recovers the high-temperature exhaust gas generated by the hot press machine and converts it into usable thermal energy (such as heating the heat transfer oil, air, or production water), significantly reducing the fuel consumption and operating costs of the production line, while also reducing carbon emissions. It is the core equipment for achieving green and energy-efficient production.


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Model:
MH-CHP
Brand:
MINGHUNG

Product Description

Energy-saving MDF Continuous Hot Press Machine with Waste Heat Recovery System

MINGHUNG Continuous flat press line For OSB MDF Production Line

Working Principle

Continuous Flat Pressing Process:

1. Fiber Laying: Dried fibers pass through the laying head to form a uniform fiber mat.

2. Pre-pressing: Initial compaction to form a slab.

3. Hot Pressing and Curing: The slab enters the high-temperature and high-pressure zone, where the adhesive cures under heat and pressure, cross-linking the fibers to form a dense structure.

4. Cooling and Curing: The cooling section reduces the temperature of the slab to prevent deformation.

5. Cutting and Post-Processing: Cutting, sanding, or veneering are performed as needed.

Equipment Structure and Components For MDF

The fiberboard continuous flatbed press is a highly integrated system consisting of the following core modules:

Laying System:

Function: Evenly lays the dried fiber and adhesive mixture into a continuous fiber mat.

Key Technologies: Airflow laying or mechanical laying ensures uniform fiber distribution, eliminates clumping, and maintains a controllable density gradient between the surface and core layers.

Equipment Types: Oscillating laying head, roller laying system, etc.

Mat forming machine

Pre-pressing Device:

Function: Provides initial shaping through light pressure, expelling air and reducing pressure fluctuations during the hot pressing stage.

pre-pressing

Hot Pressing System:

Core Components: Upper and lower steel belts, heated platens, and hydraulic system.

Steel Belt: High-precision, high-temperature-resistant alloy steel belt (approximately 1.5-2.5mm thick), with extremely high surface finish requirements (Ra ≤ 0.8μm).

Heating Method: Thermal oil or electric heating, with a temperature control accuracy of ±1°C.

Pressure Control: Variable pressure adjustment (up to 10MPa) to accommodate varying density requirements.

Continuous Hot Press MDF, OSB, and Particleboard Production

Details of continuous flat pressing lines

Cooling system:

Function: Reduce the temperature of the sheet material through water cooling or air cooling, stabilize the size, and reduce internal stress.

Cooling frame for hot press

Cutting and stacking system:

Function: Cut continuous sheet materials into the specified size and automatically stack them.

auto cutting machine for making chipboard

Key Technical Features

High-Precision Control:

Thickness Control: A hydraulic servo system adjusts the steel strip spacing in real time, maintaining a thickness tolerance within ±0.2mm.

Temperature Uniformity: Zoned temperature control ensures a lateral temperature difference of ≤3°C on the press plate.

Pressure Curve Optimization: Dynamically adjusts the pressure distribution based on the fiberboard density gradient.

Intelligence and Automation:

Online Monitoring: Laser thickness gauges and infrared temperature sensors monitor sheet quality in real time.

Fault Warning System: Big data analysis predicts problems such as steel belt wear and hydraulic system leaks.

Energy-Saving Design:

Waste Heat Recovery: Utilizes waste heat to preheat fibers or heat thermal oil.

Low-Friction Steel Belt: A special coating reduces frictional energy loss between the steel belt and the platen.

Energy-Saving Technology System for Continuous Hot Presses

1. Energy Consumption Analysis

Energy Type	Share	Major Consumption Points	Saving Potential
Thermal	65-70%	Mat heating/resin curing	★★★★
Electrical	20-25%	Belt drive/hydraulic system	★★★
Heat Loss	10-15%	Surface radiation/exhaust gas	★★

2. Core Energy-Saving Technologies

(1) Heat Recovery Systems

Waste Heat Utilization

Installation of heat pipe exchangers to recover high-temperature exhaust gas (180-220℃)

Preheats fresh air → Fiber drying (12-15% energy savings)

Data: Exhaust temp reduced from 220℃ to 120℃, heat recovery ≥35MJ/h

Closed-Loop Condensate Recovery

Flash tanks + high-temp pumps recover >90℃ condensate

Directly supplies boilers, reducing water treatment energy

Benefit: 120MJ energy saved per ton of recovered water, water savings >85%

(2) Hot Press System Optimization

Technology	Principle	Energy Saving
Zoned Temperature Control	Adjusts section temps based on mat moisture	8-10% steam reduction
Nano Thermal Barrier Coating	ZrO₂ spray (0.8W/mK conductivity)	30% ↓ heat loss
Steel Belt IR Reflection	Coating increases IR absorption to 0.95	15% ↑ heating efficiency

(3) Drive System Upgrades

Permanent Magnet Synchronous Motors

Replace asynchronous motors, efficiency 92%→96%

Frequency control matches line speed, no-load power ↓40%

Hydraulic Servo Systems

Variable displacement pumps + accumulators reduce overflow losses

Data: Power consumption 45→32kWh/m³

3. Intelligent Control Solutions

(1) Digital Twin Optimization

Real-time Sensor Data --> Digital Press Model --> AI Prediction Algorithm

--> Optimal Process Parameters --> Auto Press Adjustment --> 15-20% Energy Reduction

(2) Dynamic Pressure Matching

Automatic pressure adjustment via online density detection (X-ray):

5-8% pressure ↓ in high-density zones

3-5% pressure ↑ in low-density zones

Effect: 12% ↓ ineffective press energy + reduced thickness variation

4. Energy-Saving Performance Comparison

Technology	Investment (10k CNY)	Annual Savings	Payback Period	CO₂ Reduction/Year
Waste Heat Recovery	80-120	600 tons steam	1.5-2 years	150 tons
PM Motor Retrofit	40-60	¥180k electricity	2-3 years	45 tons
Digital Twin System	150-200	15% total energy	3-4 years	300 tons

Our company

Shandong MingHung OSB&MDF Machinery Equipment is a China professional factory who specilize in manufacturering and offering Wood based panel machine, including OSB making machine, MDF making machine, and Chipboard /PB making machine.

The machines we can offer includes: Wood chipper, Ring flaker, Strander, Wet silo, Drum dryer, Dry silo, Glue dosing and applying system /Glue blender, Mat forming, Continuous Multi-rolls pre-press, Multi opening hot press and Continuous press, Auto edge cutting machine line, Sanding machine line, kinds of related belt conveyor and so on.

China chipboard mdf osb production line China MINGHUNG PB MDF OSB production line

Product packaging

MINGHUNG OSB multi-rollers continuous pre press delivery OSB glue blender and mat former Drum dryer for OSB MDF Particleboard production MINGHUNG OSB glue blender loading Waved OSB making machine