Toscotec, Crescent Former, 1994, 32 TPD, 2650mm Deckle, 14-35 GSM

Description

  1. Overview
    1. Tissue manufacturing plant with capacity of ±30 tons/day using recycled or virgin fibres.
    2. Product with deckle of 2650 mm max, diameter of up to 1450 mm and range for 14 to 35 gsm at 5.5% moisture.
    3. Complemented by cast-iron yankee of 2500 mm diameter, gas fired hood (300°C).
    4. Daf unit to recycle waste water to process water at the rate of 30 kl/hr and two pieralisi jumbo-4 centrifuges to handle waste water at the rate of ±65 c³/hr.
    5. In 1994 - toscotech gravity cushion head box machine was installed at 20 t/day product range – 1 ply, 2-ply, kitchen towel, wipes and facial tissues (15 to 35 gsm).
    6. In 1997 – rebuilt with crescent former head box by toscotec along with stock prep upgrade with hd pulper, de-inking, screens, gas fired hood and honeywell dcs.
    7. Capacity increased to 30 tons/day, annual volume of 10,000 tons.
  2. Process Description
    1. Capacity: 14 to 35 gsm / 26 to 32 tons/day.
    2. Year built: toscotec initial 1994 and modification into crescent former in 1997.
    3. Year shut down: may 2018.
    4. Current status (maintained, mothballed, running, etc): all the equipment were mothballed and certain equipment on scheduled maintenance (e.g.: compressor and boilers).
  3. Major Upgrades
    1. New control room – 1999.
    2. New quality control system – 2000.
    3. New process control system dcs – 2003.
    4. Stock prep upgrade with deinking and screens – 2003.
    5. Harmonics and power factor panels upgrade – 2011 to 2012.
    6. Dcs upgrade to replace tissue machine plc – 2011 to 2012.
    7. Steam system upgrade – 2012 to 2013.
    8. Boiler burner upgrade – 2012 to 2013.
    9. Compressor replacement – 2013 to 2014.
    10. New qcs installation – 2016.
  4. Technology
    1. Plant process control – honeywell – total plant acont dcs r683.
    2. Quality system – honeywell – experion mx.
    3. Dc drives abb dcs 800 x 5 drives.
  5. Raw Materials
    1. Recycled fiber (office waste) and virgin fiber (hard and soft wood).
  6. Products Produced
    1. Toilet (single and two ply) and facial (white and colors) tissues, industrial and bathroom wipes, serviettes, linen saver, kitchen towel.
  7. Utilities Consumed
    1. Electricity – 990 kw hr/ton.
    2. Methane rich gas (sasol pipe line gas) – 6.5 gj/ton (boiler + hood burner).
    3. Fresh water – 18 kl/ton.
  8. Included
    1. Slate conveyors – loading and weighing.