Qty. 1 Second-hand powder coating line

Mfc.: Euroimpianti SRL, Wagner, Built: 2007, Profile length: 2.5 m

Consisting of: Spray Pretreatment, Drying Oven, Polymerisation Oven, In-line Cooling

SPRAY PRETREATMENT TUNNEL HOT PHOSPHODRESSING:

Active zone length: 3 m, Tank capacity: 3,600 litres, Ramp: 1 section, Pump: 1 unit

Flow rate: 1,200 litres/min., Delivery height: 18 m, Power: 4 kW, Heat generator: 1 unit, Burner: Methane

Operating temp.: 50°C, Power: 150,000 Kcal/h, Thermoregulation: Automatic

DRYING OVEN

Dimensions: 14 x 2.25 x 4.45 m – L x W x H, Heat generator: 1 unit

Flame burner: Methane, Thermal power: 200,000 Kcal/h, Thermoregulation: Automatic Ventilation: 4 units,

Flow rate each: 3,600 m3/h, Power each: 0.55 kW, Air curtain: 4 units, Flow rate each: 3,000 m3/h, Power each: 1.5 kW

COOKING OVEN

Dimensions: 19 x 3.8 x 4.45 m – L x W x H, Heat generator: 1 unit, 2 flame burners: Methane,

Thermal power: 400,000 Kcal/h, Thermoregulation: Automatic

Ventilation: 6 units, Flow rate each: 3,600 m3/h, Power each: 0.55 kW

Air curtain: 4 units, Flow rate each: 3,000 m3/h, Power each: 1.5 kW

DRAIN CHARACTERISTICS

E1 Water vapor discharge (condensation) - diameter: 400 mm - temperature: 40°C - emission flow rate: 6,000 Nm3/h - emission height: approximately 8 meters from the ground - concentrations of polluting substances: potassium hydroxide in traces - exit direction: vertical.

E2 Methane gas combustion fume exhaust - diameter: 200 mm - temperature: max 140°C - emission flow rate: 450 Nm3/h - emission duration: discontinuous - emission height: approximately 8 meters from the ground - direction of outlet: vertical - type of heat exchange: indirect - thermal power (Kcal/860): 175 Kw - pollutants from combustion of methane gas.

E3 Methane gas combustion fume exhaust - diameter: 250 mm - temperature: max 250°C - emission flow rate: 450 Nm3/h - emission duration: discontinuous - emission height: approximately 8 meters from the ground - direction of outlet: vertical - type of heat exchange: indirect - thermal power (Kcal/860): 233 Kw - pollutants from combustion of methane gas.

E4 Methane gas combustion fume exhaust - diameter: 350 mm - temperature: max 250°C - emission flow rate: 450 Nm3/h - emission duration: discontinuous - emission height: approximately 8 meters from the ground - outlet direction: vertical - type of heat exchange: indirect - thermal power (Kcal/860): 465 Kw - polluting substances from combustion of methane gas.

E5 Emission from paint polymerization - diameter: 400 mm - temperature: 180°C - height of emission: approximately 8 meters from the ground - type of emission: COT, total organic carbon - type: natural draft - exit direction: vertical.

TECHNICAL NOTE TECHNOLOGICAL CYCLE

All the pieces to be painted are hung on an overhead conveyor which runs through the cycle from start to finish. It consists of:

1) Spray pretreatment, 2) Oven drying, 3) Powder application in the cabin (not included!), 4) Oven polymerization,

5) In-line cooling

1) SPRAY PRETREATMENT

It takes place in a tunnel where the dirty pieces subsequently encounter washing phases with solutions hot and at room temperature. The operation is achieved via centrifugal pumps which circulate the liquid contained in an underlying tank.

A series of nozzles placed on special ramps performs both the mechanical and chemical action of the product on the pieces to be degreased.

2) OVEN DRYING

After washing, the pieces are introduced into a hot air circulation oven where they emerge perfectly dry. The heat produced by an indirect combustion generator is recycled inside the piece passage chamber with forced ventilation uniformly distributed along the entire length. Normally the temperature inside never exceeds 120°C.

3) APPLICATION OF DUST IN THE CABIN (excluded from the supply)

4) POLYMERIZATION IN THE OVEN

From the application stage the pieces emerge covered with powder paint in a floury state. In order to transform into a solid coating it must be cooked at a temperature of around 200°C. Therefore the conveyor enters a hot air circulation oven where, after spending a time proportional to its speed, it releases the completely painted pieces. Also in this oven the heat produced by an indirect combustion generator is recycled inside the chamber with forced ventilation uniformly distributed along the entire length.

5) IN-LINE COOLING

Once the hot pieces come out of the oven they pass through an area in the air where they are cooled naturally.