Nitrogen Dyeing Machine

• Nitrogen Dyeing Machine Features Specs
• Loading Capacity Up to 20 kg
• Cylinder Diameter (mm) 1200-1350
• Cylinder Depth (mm) 480-700
• Speed (RPM) (Variable) Up to 200
• Equipped with Nitrogen kit
• Equipped with mist producer to apply chemicals.
• Equipped with Ozone generator. Read more about  Terry Towel Weaving Machine

Pilot Ozone Denim Processing System

Features	Specs
Ozone production	30-70 g/h
Oxygen production	0.5-0.8 m3/h
Carrier	Water/Ozone
Load Capacity	5 kg -10 kg

DYEING MACHINE (BULK) LIST

Name Of Machinery	Manufacturer	Model	Machine Capacity (Kg)	Country Of Origin
HT-355	JUNG IL	VENUSTM	540	GREECE
HT-255	JUNG IL	VENUSTM	360	GREECE
HT-155	JUNG IL	VENUSTM	180	GREECE
ATHENA HT-455	JUNG IL	ATHENA-3	1000	GREECE
LONGCLOSE	JUNG IL	N/A	350	ENGLAND
DM-355	JUNG IL	JUMBO JET FLOW	450	TURKIYE
DM-4A55	JUNG IL	JUMBO JET FLOW	600	TURKIYE
DM-4B55	JUNG IL	JUMBO JET FLOW	600	TURKIYE
DM-4C55	JUNG IL	JUMBO JET FLOW	600	TURKIYE
HT-555	BENEKS	HT SYNCHRODYE	750	TURKIYE
DM-655	DILMENLER	JUMBO JET FLOW	900	TURKIYE
KOREAN	JUNG IL	N/A	150	KOREA
TOTAL MACHINE CAPACITY	6480

SAMPLE DYEING MACHINE LIST

Name Of Machinery	Manufacturer	Model	Machine Capacity (Kg)	Country Of Origin
HT-B55	SCLAVOS	VENUSTM	50	GREECE
HT-S155	JUNG IL	MAXIFLUX	30	TURKIYE
HT-S255	BENEKS	SYNCRO DYE	30	TURKIYE
HT-S355	JUNG IL	HT	15	TURKIYE
SW-155	BANGLA	N/A	20	BANGLADESH
SW-255	BANGLA	N/A	10	BANGLADESH

Mercerisation process

During the mercerisation process, cotton yarn or fabric (mainly woven fabric, but also knit fabric) is treated under tension in a solution of concentrated caustic soda (270 -300g NaOH per litre, 170-350 g NaOH per kg textile substrate, respectively) for about 40-50 seconds. Subsequently, the textile substrate is rinsed in order to remove caustic soda. This rinsing water is called weak lye (40-50 g NaOH /l) and can be concentrated by evaporation for recycling. In many cases, purification of the lye is required, which is normally carried out after evaporation. The purification technique depends on the extent of lye concentration and can be simple sedimentation and / or oxidation / flotation by injection of hydrogen peroxide.
The concentration of weak lye is 5-8oBe (30-35 g NaOH/l) and is concentrated to 25-40oBe (225-485 g NaOH/l), depending on the mercerizing process applied. In case of raw mercerization (dry textile substrate is treated) the concentration is 25-28oBe and is 40oBe in case of non-raw mercerization. In case of raw mercerization, the concentration of impurities is significantly higher and thus also viscosity, which do not allow one to go for higher concentrations (circulation in evaporators is disturbed).

By recovery of caustic soda, alkaline burden of wastewater is reduced drastically and required acid for wastewater neutralisation is minimised.
Applicable for both to existing and new installations.
The more stages for evaporation, the more often the heat is reused and the lower is the steam consumption and herewith the running costs. Investment, however, obviously increases with more stages.

Investment costs mainly depend on plant size and purification technique and typically vary from EUR 200 000 to 800 000.

Evaporation requires approximately 0,3 kg steam / kg water evaporated in a 4-stage evaporation plant. This corresponds to 1,0 kg steam / kg recovered NaOH (28oBe) or 1,85 kg steam/ kg NaOH (40oBe). However, energy consumption for production of caustic soda by chloroakali electrolysis is also considerable.

Amortisation time depends on plant size and operation time per day. If mercerisation is permanently practised, pay back time is less than one year. In case, non-recovered caustic soda lye has to be neutralised with acid, the pay back time is less than six months, and caustic soda recovery may be very attractive.
The first caustic soda recovery plant went into operation more than one hundred years ago. Today, there are more than 300 plants in operation worldwide; especially for recovery of caustic soda from woven fabric mercerisation and yarn mercerisation and some from knit fabric mercerisation.