High consistency forming process for papermaking. Phase II. Final report

Technical Report · Mon Sep 01 04:00:00 EDT 1980

OSTI ID:6466207

Kranz, W T; Judd, M; Rotherham, J

The demonstration program for saving energy that can be obtained by forming paper and paperboard products at initial high fiber concentration is discussed. Under Phase II, a limited number of design modifications were made to the low speed high consistency headbox. These resulted in improved sheet formation for samples used in subsequent press studies. Comparisons of sheet physical and drainage properties were made between low and high consistency sheets. Equipment for these tests was designed and fabricated during Phase II, including a laboratory scale dynamic roll nip press with single felt. The high consistency sheet had significantly higher permeability and compressive modulus than the low consistency sheet. In simulated three nip press studies the high consistency sheet demonstrated a 1.5 to 2.5% higher solids content than the low consistency sheet under the same operating parameters. The effect of variables such as machine speed, sheet basis weight, nip loading and entering sheet consistency were investigated. Rules for scaling between laboratory and full size press nips have been established. The energy saving potential for the paper industry through the use of high consistency forming was estimated as 6 to 7% of current total consumption.

• Research Organization: Thermo Electron Engineering Corp., Waltham, MA (USA); Thermo Electron Corp., Auburn, MA (USA). Lodding Div.
• DOE Contract Number: AC02-78CS40150
• OSTI ID: 6466207
• Report Number(s): DOE/CS/40150-T1; ON: DE81026511
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
COMPRESSION
DEMONSTRATION PROGRAMS
ENERGY CONSERVATION
EQUIPMENT
FABRICATION
INDUSTRY
MATERIALS HANDLING
MATERIALS WORKING
PAPER
PAPER INDUSTRY
PERMEABILITY
PRESSING
PROCESSING
SHEETS
STEAM
WOOD PRODUCTS INDUSTRY