Resources Contact Us Home
Method and arrangement of impregnating chips

Image Number 2 for United States Patent #7615134.

The method and an arrangement are for improved impregnation of chips in association with the manufacture of chemical cellulose pulp. Un-steamed chips are fed into an impregnation vessel (30) in which a fluid level (LIQ_LEV) is established under the highest level (CH_LEV) of the chips. An improved impregnation arrangement for the chips is obtained by the addition of impregnation fluids (BL1/BL2/BL3) with increasing temperatures at different heights (P1, P2, P3), and by the establishment of a counter-flow zone (Z1) in the uppermost part of the impregnation vessel. The requirement for steaming may in this way be dramatically reduced while at the same time the amount of expelled waste gases may be minimized. A major part of the volatile compounds present in the wood are bound to the impregnation fluid (REC) that is withdrawn.

  Recently Added Patents
Radio communication devices, information providers, methods for controlling a radio communication device and methods for controlling an information provider
Thiocyanato or isothiocyanato substituted naphthalene diimide and rylene diimide compounds and their use as n-type semiconductors
Signal transfer apparatus
Continuous geospatial tracking system and method
Multilayered ceramic electronic component and fabrication method thereof
Current collector for lead acid battery
Stacked type semiconductor memory device and chip selection circuit
  Randomly Featured Patents
Internal natural light delivery system
Semiconductor fabricating apparatus
Disposable wearing article
Die cut insulation blanket and method for producing same
Method for controlling output from ultrasonic speaker and ultrasonic speaker system
Packet transmission method and apparatus
Strong reversible hydrogels
Brake assurance circuit operative in response to a low brake pipe pressure
Travel enclosure for a golf club bag
Interlocking stubs