Pilot-scale Garment Dyeing Machine
Pilot-scale Garment Dyeing Machine

Pilot-Scale Nitrogen Dyeing Machine. Mercerisation Process

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.

About Engr. Kh. Mashiur Rahman

He is Top Class Digital Marketing Expert in bd based on Google Yahoo Alexa Moz analytics reports. He is open source ERP Implementation Expert for RMG Industry. He is certified IT Professional from Aptech, NCC, New Horizons & Post Graduated from London Metropolitan University (External) in ICT . To Hire his service and Him Email- sales@autogarment.com, Cell# +880 1792525354

Similar Post

How Disperse Dyeing or Polyester Dyeing Works

How Disperse Dyeing or Polyester Dyeing Works?

Disperse Dyeing Process Prepare the recipe of Disperse Dyeing or Polyester Dyeing for the shades …

One comment

  1. Dear Sir,

    We want to purchase some machines. Please send email address, I will send details.

    KINDLY REPLY VERY SOON, TODAY

Leave a Reply

%d bloggers like this: