PAPCEL A.S.

PAPCEL A.S.

Unicovska 132, 784 10 Litovel, Czech Republic
Contact: Mrs. Martina Pavlikova

Cookers for cationic starch

Cookers for cationic starch

These cookers run in a manual or fully automatic mode; they are designed for continuous cooking of cationic, potato and corn starches for application into thick paper stock or for ASA sizing agents preparation.

Design

These cookers run in a manual or fully automatic mode; they are designed for continuous cooking of cationic, potato and corn starches for application into thick paper stock or for ASA sizing agents preparation. Standard capacity of equipment: 50 - 300 kg/h. 

Starch storage tank:

  • opper integrated in a cooker frame; filled from paper bags or “Big-Bags”
  • low-capacity silo connected directly to cooker, filled from “Big-Bags”
  • low-capacity silo installed separately from cooker and connected to dosing screw through screw conveyer
  • large-capacity silo: 50/85/100/120 m3, made of GPRS material

Cooker conception:

  • integrated compact unit (all cooker parts integrated in a carrying frame)
  • split conception (the slurry unit is installed below the cone of large-capacity silo and connected to the cooker with pipeline)
  • cookers with or without subsequent storage tank
  • cooker controlled by single-purpose programmable relay
  • cooker controlled by CPU and touch LCD panel
  • option: visualisation in paper machine DCS or on dedicated PC station located in PM operation room

Main parts

Key cooker components for cationic starches preparation, type JC:

  • powder starch storage tank
  • precise starch dosing equipment (screw doser driven by geared electric motor, speed regulation by frequency converter)
  • slurry unit with accessories (equipment for agitation of starch with water using an effective agitator with dispersive effect)
  • cooking unit with accessories (regulation of saturated steam injection, cooking tube, dilution circuit for final correction of outgoing concentration)
  • electric elements and control system
  • cooker carrying frame

Functional description of cooker for cationic starches preparation, type JC

Powder cationic starch is stored in one of the storage tanks. From here, it is continuously dosed into a slurry unit with a water supply. The slurry concentration depends on the starch content in water. The slurry is continuously conveyed by a screw pump to a cooking part of the cooker. In this cooking part, saturated steam is injected into a jet chamber followed by a cooking pipe. The steam volume and cooking temperature are regulated by a regulation circuit. The cooking pipe is designed not only for potato but also for corn starches so that the starch slurry is always properly cooked.

After the cooking pipe, there is a static mixer for cold water supply where final concentration of cooked solution can be set according to technological requirements. The quantity of diluting water is controlled by a control loop. The diluted and cooled starch solution in the required concentration can be stored either in a storage tank or it is directly dosed in to the technological process. Usage of a storage tank brings some technological advantages and provides dosing of cationic starch in more dosing points. The whole process of cationic starch prepa-ration is monitored by the control system providing:

  • constant slurry concentration
  • possible regulation of slurry concentration according to technological requirements
  • reproducible mode of continuous cooking
  • reproducible output parameters of cooked starch (concentration)
  • automatic start/stop switch according to external signals
  • automatic rinse mode before process start and after process termination
  • according to required range and configuration of control system it is possible to regulate an output capacity manually or through external signals (e.g. locked with PM capacity)

Advantages

The whole process of cationic starch prepa-ration is monitored by the control system providing:

  • constant slurry concentration
  • possible regulation of slurry concentration according to technological requirements
  • reproducible mode of continuous cooking
  • reproducible output parameters of cooked starch (concentration)
  • automatic start/stop switch according to external signals
  • automatic rinse mode before process start and after process termination
  • according to required range and configuration of control system it is possible to regulate an output capacity manually or through external signals (e.g. locked with PM capacity)

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