Page 70 - May-June-2017
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 Roberto etc. which could squeeze more water out of the   Somehow, we will here discuss, more futuristic   efficiency is dissipated into heat by different means.   has number of innovative ways to reduce quantity of
            There is availability of 80C jacket water from 1MW gas
                                                              wash boxes required to achieve certain washing levels.
 fabric before drying, almost cutting 40% drying cost. In   approach for the textile sectors which are producing   engine at flow of 15 ~ 20 M3/hour. There is capacity of   Horizontal wash box vs vertical wash box, single
 case of exhaust fabrics, vacuum drying is saving same   their own electricity with use of gas engines. Any gas   steam availability from WHR boiler at exhaust of Gas   threading vs double threading are now common
 drying cost.  engine is able to convert less than 43% of gas   Engine, equal to 600 ~ 900kg. Further the hot flue from   proposal. Washing efficiency is based on following main
 consumed into electrical energy. Same percentage of   WHR boiler is still available at 180C which is normally   factors.
            released into air. Infact, this exhaust air is available for
 In Last Chapter, regarding the Spinning and Weaving,   causing failures/down times.  quick and cost free drying of fabric, if injected into   Temperature of Water Shower on Fabric
 we have mainly emphasized the arrangement of ceiling   Thermosole, Stenter, Hot flue chambers. Combining all   Use of pre-hot water in showers can save a lot
 height and lighting system. Finishing mills are bit more   Moreover, it is wiser to have separate building based on   above sources, the steam requirement remains limited   (especially when pre-hot water from gas engine jacket
 complex, more energy hungry and more   heat zones, rather than having one common building,   to Dyeing/Printing Steamers only.   is available). Temperature of all hot sprays can be
 environmentally challenged manufacturing setups. A   allowing heats in different area to mix and trap.      managed in central reservoir which is eventually more
 normal Finishing Unit (exhaust or continuous) mainly         efficient than normal water spray and then consequent
 uses the following natural resources with non-natural   Finishing Mills are more prone to expansions owing to   washer heat (direct or in-direct water heating). Machines
 resource i.e. Chemicals.  business dynamics. Investors pushing more production   %/0123415/!060378  based on hot spray washing will be cheaper as one
 • Power   in same area normally challenge esthetic design of      common heat exchanger can serve purpose,
 • Steam  initial planning. So a unit based, production expansion   consequently, individual heat exchangers are not
 • Water (Raw)  is pleaded to keep WIP flooding levels into normal and   required saving a lot in machine manufacturing cost.
 • Water (Soft)  workable esthetics.
 • Compressed Air  $9&!        "#$%&!'%(%&)*+#(     9:2!!     Number of squeezes on fabric to meet fresh waters
 Steam/Water Savings  -205;       ,')-.           $5203       Intermittent squeezing can increase the washing
 Consumption of power used on machines is not being   Exhaust and Continuous are two main Finishing setups   efficiency by 20%. Although, machine manufactures
 discussed, it varies for every machine design.   around. Continuous Finishing Setup can be further   add extra cost for intermittent squeezers, somehow,
 Somehow, many power consumption saving ideas are   sub-categorized in Woven and Denim Finishing Setups.   there is saving of one wash box over every five wash
 available in below discussion.  Any finishing setup is comprised of series of chemical   boxes. Another innovation is suction slots inside the
 treatment with either Wetting or Drying of fabric. Fabric   !!!!!!  wash box, which vigorously increase the exchange to
                                !!!!!!9:2!)43
 Building of Finishing Mills  is being wet and then Dried atleast 2 ~ 5 times,   liquor inside the fabric and prove more efficient.
 depending on the processes. All the operative cost is
 utilized in Wetting/Drying of cost. Any Wetting/Washing      Highly efficient wash boxes will reduce the use of water
 Treatment cost about 0.5 ~1.0 kg of Steam/kg of fabric       and hence will reduce usage of chemicals based on
 and 0.9 ~1 kg of steam for drying.  (approximately 0.3   Washing Efficiency   recipe.
 Ton to 0.6Ton for washing of 12 Oz fabric in 1000meter,   Water consumptions of the fabric depends on two main
 similarly about 0.75 Tons on drying of same).  factors, FIRST pollution of fabric when fed to washing   End Note
            machine i.e. mercerized fabric, Scoured Fabric or Dyed   Savings in the finishing units are various. Certain
 Water Recycling  Fabric etc, SECOND Washing Efficiency of the washing   innovations are there for supporting futuristic way of
 Water recycling by identifying the different streams of   compartment.  thinking. We to begin a new processing, new methods,
 water and re-using to main reserviour or other machines      new techniques. Being competitive and being energy
 is an approach that don’t need any more introduction.   Pollution of fabric can be reduced with vacuum slots   efficient is never ending race. We need to take caution
 Depending on processes, upto 20 ~ 25% of water can   wherever applicable in the process. Washing efficiency   that we should not be left out in race.
 be re-used without any treatment.

 Turning Point
 Contrary to lower height of buildings discussed for   Saving one passage of Wetting or Drying will cut the
 spinning and weaving sectors, finishing mills are   expense of finishing by millions. There had been two
 designed with high ceiling level in order to have more   approaches in cutting the cost of finishing i.e. saving a   Mian Rashid Mahmood
 relaxed environment for workers. Underground fresh air   wetting pass or saving a drying pass. In latest, practices   B.Sc. Textile (Processing)
 ducts can be opened in the finishing floors to freshen   of European textile units, textile experts used to take   MBA (Marketing)
 up the air and maintain oxygen levels. Exhaust fans   advantage of semi-dry fabric (almost half drying) or   Project Manager (US Denim for 9 and 1/2 years)
 should be able to release heat/steam from top of roof.   no-drying in certain processes i.e. no drying after   Previous Sapphire Finishing Mills
 Powerless exhaust fans are exemplary for not only   bleaching process and wet fabric feeding to   Previous Rupafab
 saving electricity but also efficient head throw out.   mercerizing process or semi drying after washing   Previous Nishat Dyeing & Finishing
 Exhaust fans fitted on the side walls are normally not   process leading to stenter finishing etc.
 effective. Heat trap zone are major reason for
 employees ailment and low efficiency in summers. Heat   Later on, with further, development in continuous
 trap zones also effect electronics of the machines   Squeezing techniques, there had been rolls like RHL
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