High consistency forming process for papermaking. Phase II. Final report
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
Similar Records
Development of A Continuous Process for Displacement Dewatering
Final Technical Report of project: "Contactless Real-Time Monitoring of Paper Mechanical Behavior During Papermaking"
Related Subjects
PAPER
PROCESSING
PAPER INDUSTRY
ENERGY CONSERVATION
COMPRESSION
DEMONSTRATION PROGRAMS
EQUIPMENT
MATERIALS HANDLING
PERMEABILITY
PRESSING
SHEETS
STEAM
FABRICATION
INDUSTRY
MATERIALS WORKING
WOOD PRODUCTS INDUSTRY
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes