M-COIL X: The professional coating line

BASIC PARAMETER

MODEL:
M-COIL X
The pretreatment production line can be removed, but the finished products will be affected without it.
The machine is equipped with coil correct system.
SPECIFICATION OF COIL:
1. Inner diameter of coil: Ф405/505mm
2. Outer diameter of coil: Max. Ф1500mm
3. Weight of coil: Max. 5tons
4. Thickness of coil: 0.2mm~1mm
5. Width: 800~1600mm
SPECIFICATION OF PAINT:
1. Type: PE, PVDF, NANO and others.
2. Thickness of film: 1.5um
3. Thickness of prime: 5~8um(precision≤2um)
4. Thickness of paint: 20~35um(precision≤2um)
LINE SPEED:
1. The best line speed: 5~25m/min
2. The speed of accumulator input is 100m/min
3. The speed of accumulator output is 100m/min

Paint

PVDF

PE

Crylic acid

Viscosity of paint

60~120

60~110

50~110

Thickness of dry film

15~25

15~25

15~20

Baking temperature

249~254

210~224

183~210

Line speed

8~15

10~20

10~25


CLIENT PREPARE

POWER REQUEST:
1. Total power is 1500kw if the whole line uses electric to heat. Besides the total power as per finished product.
2. Main power: AC 380V*3P*60Hz
3. Power of operation: AC 220V*1P*60Hz
WORKSHOP REQUEST:
1. Size: at least 100m length and 12m width and 9m height.
2. Water pressure: 2~5kg/cm2, water consumption is 2Ton/h, please provide 5Ton/h clean water and build cooled water pool or water tower.
3. Air pressure: 4~8kg/cm2, air consumption is 2m3/min, please provide air compressor.
4. Build nature gas station.
5. Cement thickness must be over 150mm.
6. At least one 5 tons crane.
7. Please set up waste water treatment pool.
8. Please build dust-free coating room( this part drawing basic on client's workshop drawing)
RAW MATERIALS:
1. Chemical Agent

Name of fluid

Degreasant

Non-chrome fluid

Concentration

3%~4%

30%~50%

Unit dose

0.008

0.0014

2. Other Materials for Coating.
Aluminum coil(if the production line is not equipped with pretreatment line, then the aluminum coil must be cleaned)/Paint/High temperature tape.
THE APPARATUS:
1. For the production line
Wet film gauge/dry film gauge/adhesive cup/temperature test paper/painter mixer/cutter.
2. For the lab
Precision level(accuracy 0.02mm)
Tape, Vernier caliper, steel ruler.
Angle square, micrometer, feeler
Vibration measurer
Tachometer
Portable tension meter
Small tensile testing machine
Wheel surface thermometer
Infrated temperature measurement instrument[RAYTEK]
PH instrument, PH paper
Conductivity meter
Precision electric balance
Burette, beaker, an so on.
Indicator
Electric cooker(boiling water resistance)
Dry film thickness gauge
Wet film thickness gauge(BRAIVE INSTRUMENTS)
ERISSON 321-4
60°GROSSMETER
The frame instrument, circle instrument.
Colorimeter[BYK]
Incubator(blast include)
Paint baubs
Heat label
Pencil
Shock testing machine
Second chronograph


EQUIPMENT LIST

NAME QTY
UNREELING MACHINE 2SETS
SPLICER 1SET
DRIVING MACHINE 4SETS
MINI DRIVING MACHINE 2SETS
ACCUMULATOR 2SETS
DEGREASANT SLOT 2SETS
BRUSHING SLOT 2SETS
WASHING SLOT 3SETS
DRY OVEN OF PRETREATMENT 2SETS
CHROME-FREE COAT FILM OVEN 1SET
COOL OVEN OF PRETREATMENT 1SET
COATING MACHINE(SINGLE COATER) 1SET
COATING MACHINE(TWIN COATER WITH BACK COAT) 1SET
BAKING SYSTEM 2SETS
COOLING OVEN 6SETS
COIL CORRECT SYSTEM 1SET
REELING MACHINE 2SETS
REGENERATIVE THERMAL OXIDIZER 1SET
CONTROL CABINET 1SET

SPECIFICATION

SIMPLE FLOW CHART

UNREELING MACHINE

1. Size:L4980mm*W1390mm*H1465mm
2. Qty.: 2 sets
3. Type: Inflatable
4. Consists of:
Magnetic powder brake*1 set
Inflatable plate Ф405/Ф505mm*2sets
Air-cylinder Ф200*80mm*2sets
Mirror finished roller Ф200*1800mm*1set
5. Function: The aluminum coil is imposed with certain tension under the magnetic powder brake, then drawn by driving machine.


SPLICER

1. Size: L1400mm*W2200mm*H1600mm
2. Qty.: 1 set
3. Consists of:
High precision punching mold*1set
Rubber roller Ф200*1800mm*1set
Hydraulic system*1unit
4. Function: Connecting two piece of aluminum coil without stopping machine.


DRIVING MACHINE

1. Size: L4000mm*W700mm*H2100mm
2. Qty.: 1 set
3. Consists of:
Rubber roller Ф395*1800mm*2sets
Air-cylinder Ф200*75-50*2sets
7.5kw AC Siemens motor*1set
Worm reducer*1set
4. Function: Drawing aluminum coil.


ACCUMULATOR

1. Size: L4450mm*W4900mm*H10950mm
2. Qty.: 1 set
3. Consists of:
Steel Roller of Accumulator Ф290*1800mm*15sets
Guide steel roller Ф290*1800mm*4sets
Air-cylinder Ф250*3850mm*3sets
4. Function: The storage length is 100m, it can make sure the whole production line non-stop run if we change the coil.


DEGREASANT SLOT

1. Size: L2680mm*W1400mm*H1520mm
2. Qty.: 2 sets
3. Type: top and bottom spray
4. Consists of:
Rubber roller Ф150*1800mm*2sets
Air-cylinder Ф63*75-50*2sets
2.2kw degreasing pump*1set
5. Function: Remove the oil dots by the acid fluid


BRUSHING SLOT

1. Size: L2680mm*W1000mm*H1520mm
2. Qty.: 1 set
3. Type: top and bottom brushing
4. Consists of: Brushing roller Ф150*1800mm*2sets
Rubber roller Ф150*1800mm*2sets
Air-cylinder Ф63*75-50*2 sets
1.5kw motor*1set
5. Function: Brush to remove the oxide which remaining on the aluminum surface.


WASHING SLOT

1. Size: L2680mm*W1400mm*H1520mm
2. Qty.: 2 sets
3. Type: top and bottom spray
4. Each Consists of:
Rubber roller Ф150*1800mm*2sets
Air-cylinder Ф63*75-50*2sets
2.2kw cycle pump*1set
5. Function: Remove the remaining chemical agent on the coil by clean water.


DRY OVEN OF PRETREATMENT

1. Size: L2680mm*W780mm*H1450mm
2. Qty.: 1 set
3. Consists of:7800k infrared gas burner*4sets
4. Function: Dry the coil.


CHROME-FREE COAT FILM OVEN

1. Size: L2680mm*W600mm*H1600mm
2. Qty.: 1 set
3. Consists of:
Coat film roller Ф150*1800mm*2sets
Air-cylinder Ф62*75-50-FA*2sets
Air-cylinder Ф63*50-FB*2sets
4. Function: Coating the film on the surface of coil by chrome-free chemical agent, this film will help the paint adhere to aluminum surface more smoothly. Traditional l way is to use the chrome chemical agent to coat this film, but this chrome chemical agent will threaten our environment, now we use this pollution free chemical agent instead of chrome chemical agent.


COOL OVEN OF PRETREATMENT

1. Main Material: 2mm carbon, etc.
2. Type: fans cooling.
3. Consists of: 0.37kw fans*6sets.
4. Function: Make the coil cooled from previous dry oven.


COATING MACHINE

A. Top coat
1. Size: L2680mm*W1100mm*H1800mm
2. Qty.: 1 set
3. Type: top coat
4. Consists of: Coating roller Ф265*1800mm*1set
Transfer roller Ф265*1800mm*1set
Doctor roller Ф210*1800mm*1set
Pick up roller Ф210*1800mm*1set
Cardan shaft L500mm*4sets
1kw paint offer system
Coating motor 5HP/3HPDC
5. Function: Coating.
B. Back coat
1. Size: L2680mm*W835mm*H1800mm
2. Qty.: 1 set
3. Type: back coat
4. Consists of: Mirror coating roller Ф265*1800mm*1set
Pick up roller Ф210*1800mm*1set
Cardan shaft L500mm*2sets
1kw paint offer system
Coating motor 5HP/3HPDC
5. Function: coat the back of aluminum coil.


BAKING SYSTEM

1. Size: L2700mm*W2300mm*H3200mm
2. Qty.: 8 sets
3. Consists of: Baking box*1set
E brand burner*1set
Catalytic combustion appliance*1set
5.5kw high temperature resistance cycle fans*1set
2.2kw smoke ventilator*1set
4. Function: dry the paint film on the aluminum coil surface, temperature control system help baking, not too high nor too low.


COOLING OVEN

1. Size: L2700mm*W2000mm*H3100mm
2. Qty.: 3 sets
3. Type: air-condition
4. Consists of: 1.5kw air-condition*1set
5. Function: Make the coil cooled after baking. This air-condition oven has a good cooling effect compared with traditional fans, even the air in the workshop is over 40℃, the air comes from air-condition will keep in the range between 20~25℃. So the traditional fans can not be able to cool down the coil if the air in the workshop is hot, the surface paint will remove to the rubber rollers, then the finished products are scrap.


REELING MACHINE

1. Size: L5600mm*W1020mm*H1600mm
2. Qty.: 2 sets
3. Type: inflatable
4. Consists of: Inflatable plate Ф405mm/Ф505mm*2sets
Air-cylinder Ф200*80mm*2sets
15kw SIEMENS motor*1set
Hydraulic oil-cylinder Ф80*600mm*1set
5. Function: Tidy up the coated coil, the automatic control system will keep reeling smoothly all time.


REGENERATIVE THERMAL OXIDIZER(RTO)

DESIGN METHODOLOGY
For the organic waste gases produced from the coating process, a unit of direct-fired heat incinerator is introduced to oxidize and purify these waste gases, generally under 750-800℃. After that, these high-temperature waste gases are in the heat recovery before emitted to the air. Heat energy recycling usually includes: 1. Preheating and pretreating waste gas; 2. Heating fresh air before recycled to each section of the oven; 3. Heating hot water or air before used for the cleaning and drying of cleaning section in the chemical synthesis line. Emission standards for waste gases are stated below: The Integrated Emission Standard of Air Pollutants(GB16297-1996) The Ambient Air Quality Standard(GB3095-1996) DB31/881-2015 The Emission Standard of Air Pollutants for the Processes of Paint, Ink and Other Similar Products(Shanghai Local Standard)
WORK PROCESS

DESCRIPTION
The organic waste gases produced from each are of the oven in the coating line will be delivered to the direct-fired unit for purification and treatment, through the bypass of Fan First Outlet, as regulated by the valve.
These waste gases will be firstly delivered to the waste gas heat exchanger for the initial preheating, drastically increasing the initial temperature of waste gases to reduce the consumption of natural gases in the combustor of heating chamber, before delivered to the direct-fired unit.
After being heated in the heat exchanger, the initial waste gases are at a very high temperature. Then these gases will be sent to the combustion chamber, as further heated in the combustor using natural gases, until the temperature of initial waste gases reaches the combustion and pyrolysis temperature at 750℃. Under the effect of high temperature at 750℃, organic waste gases in the pyrolysis chamber, after that harmless water, carbon dioxides and other products will be generated through adequate oxidation, purifying the organic waste gases. The combustion and purification process in the furnace belongs to exothermic reaction, heat generated from the combustion of organic matters further raise the air temperature which is originally heated by fuel, thereby ensuring the heat generated from the combustion of organic matters identical to that from fuel-heating waste gases. We maintain the ceiling value of temperature after the reaction at the normal range for equipment operation by setting the upper limit of pyrolysis temperature. Higher concentration of organic matters means more heats generated from the reaction of organic combustibles, smaller output of the heating power of combustor, lower consumption of equipment operation and also more energy-saving.
The purified gases(hereinafter referred to as "smokes") are found at a high temperature carrying a lot of heat energies. We firstly heat the fresh air at a higher temperature through the fresh air heat exchanger, then use the waste gas heat exchanger to heat the initial waste gases emitted from the oven, and keep the initial waste gases at a higher temperature around 450℃, thereby reducing the energy consumption in the direct-fired unit.
These smokes, through the heat exchange in the waste gas heat exchanger, will be then sent to the fresh air heat exchanger. We heat the fresh air at a normal temperature to raise the temperature of fresh air to round 300℃, through the allocation and regulation of valve, fresh air is added to the oven through the fresh air inlet of circulating fan, reducing the energy consumption of the original oven, because the added hot air is around 500℃, which is much higher than the normal air temperature(20℃). The quantity of fresh air at a high temperature which is added to the original hot air recycling system will be controlled by the incinerator temperature detection in the oven, enabling the control of incinerator temperature.
After the heat removal by the fresh air heat exchanger, the higher temperature is around 205℃, which can be also used to heat the hot water or air for production or living, ultimately emitting the purified up-to-standard air.
PRINCIPLE OF DIRECT COMBUSTION
The principle of direct-fired thermal combustion: When organic waste gases stay in the combustion pyrolysis furnace, the temperature of waste gases is heated until it reaches the oxidation and pyrolysis temperature of organic matters at 700~800℃, using the natural-gas-fueled combustor. Further, these gases will stay for a while in the pyrolysis section, until the organic matters in the waste gases are completely converted into water and carbon dioxides, purifying the waste gases. No matter how high the temperature or concentration of waste gases is, this method can obtain the expected treatment effect, and is applicable to the occasion where heat energies are available. It is recommended to recycle the heat to heat the hot air or water for the benefit of production or living. Its reaction process can be expressed as:

Direct-fired characteristics can be described below:
1.The end products of organic matters through complete combustion are CO2, H2O and N2 or like;
2.The combustion state means the recoverable heat energy of flame combustion within the short time under the high temperature;
3.The oxidizing temperature is 750-820℃;
4.The decomposition rate of organic waste gas is up to 99% or above;
5.Two levels of heat recovery for production;
6.The heat recovery rate is up to 40~75%.
EQUIPMENT CONFIGURATION

Equipment Name

Equipment Configuration

Incinerator

1. Material: SS 310
2. Temp: ≤900℃
3. Combustor: Natural gas

Fresh air heat exchanger

1. Material: SS 304
2. Structural form: Tube-shell
3. Seal air fan: 2.2KW

Waste gas heat exchanger

1. Material: SS 304
2. Structural form: Tube-shell

Fresh air cryogenic heat exchanger

1. Material: SS 201
2. Structural form: Tube-shell

Waste gas exhaust fan

37Kw

Fresh air fan

11KW

Pipeline

1. Fresh air high temperature: SS 304
2. Fresh air low temperature: SS 201
3. Waste gas low temperature: SS 201

Heat preservation

Thickness: 150-250mm

Instrument and apparatus

Temperature controller, pressure transmitter, thermocouple, etc.

Electrical control

1. PLC: SIMENS
2. Frequency converter: ABB
3. Low-voltage apparatus: SCHNEIDER


CONFIGURATION LIST

1. Motor: SIEMENS
2. Bearing: NSK
3. Temperature gauge: RKC
4. Roller: Rounder bar steel.
5. Unreeling machine: inflatable appliance
6. Frequency: ABB
7. Air cylinder: AIRTAC


DRAWING