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Journal articles
Open Access
A simplified adaptive model predictive controller, TAPPI JOURNAL June 1988

A simplified adaptive model predictive controller, TAPPI JOURNAL June 1988

Journal articles
Open Access
Reject Handling in Secondary fiber systems, June 1988, TAPPI Journal 88JUN87

Reject handling in secondary fiber systems, TAPPI JOURNAL June 1988

Journal articles
Open Access
The resistance of refiner plate alloys to bar rounding, July 1988, TAPPI Journal 88JUN95

The resistance of refiner plate alloys to bar rounding, TAPPI JOURNAL June 1988

Journal articles
Open Access
Upgrading wood chips: the Paprifer process, TAPPI JOURNAL March 1988

Upgrading wood chips: the Paprifer process, TAPPI JOURNAL March 1988

Journal articles
Open Access
Chemical priming for extrusion coating, TAPPI JOURNAL May 1988 88MAY101

Chemical priming for extrusion coating, TAPPI JOURNAL May 1988

Journal articles
Magazine articles
Open Access
Black liquor evaporators upgrade — How many effects?, TAPPI Journal April 2023

ABSTRACT: Black liquor evaporation is generally the most energy intensive unit operation in a pulp and paper manufacturing facility. The black liquor evaporators can represent a third or more of the total mill steam usage, followed by the paper machine and digester. When considering an evaporator rebuild or a new system, the key design question is how many effects to include in the system. The number of effects is the main design feature that deter-mines the economy of the system and the steam usage for a given evaporation capacity. A higher number of effects increases steam economy and reduces energy cost to a point, but additional effects also have higher initial capital cost and increased power costs. This research paper uses life-cycle cost analysis (LCCA) as a method to determine the optimum number of evaporator effects for a new evaporator system. The same basic principles and method can also apply to existing evaporator rebuild projects.

Journal articles
Open Access
A comparison of five optical surface topography measurement methods 15-Jan-27

A comparison of five optical surface topography measurement methods, TAPPI JOURNAL January 2015

Journal articles
Open Access
Upgrading aeration system performance in secondary basins treating pulp and paper wastewater: A review, TAPPI JOURNAL June 2015

Upgrading aeration system performance in secondary basins treating pulp and paper wastewater: A review, TAPPI JOURNAL June 2015

Journal articles
Open Access
Facile preparation of nanofiller-paper using mixed office paper without deinking, TAPPI JOURNAL 2015 March - 15MAR167

Facile preparation of nanofiller-paper using mixed office paper without deinking, TAPPI JOURNAL March 2015

Journal articles
Magazine articles
Open Access
Calender barring review with experiences, TAPPI Journal July 2022

ABSTRACT: Excessive calender vibration affects all styles of calender stacks from single to multi-nip, all hard rolls, or a combination of hard and soft rolls. Calender vibration can be forced vibration or self-excited vibration. Forced vibration occurs at the first few harmonics of the calender roll rotational speeds and is caused by imbalance, misalignment, eccentricity, etc. Self-excited vibration, the focus of this paper, occurs at higher frequencies. Feedback paths for self-excited vibration must be understood in order to ameliorate the problem. This is presented in the context of the historical development of the theory of self-excited feedback mechanisms, followed by a survey of self-excited feedback mechanisms in various types of calender stacks. Methodology to determine which feed-back path is present and techniques to control or eliminate the resulting vibration follow. To obtain a flavor of the types of problems faced and practical remedial actions, a variety of experiences with barring issues are provided.

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