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Using Optimization Tools to Improve Mill Performance, 1993 P
Using Optimization Tools to Improve Mill Performance, 1993 Process Control, Electrical & Information Conference Proceedings
Scaling Law for the Strength of Paper Structures with a Flaw, 1999 International Paper Physics Conference Proceedings
Scaling Law for the Strength of Paper Structures with a Flaw, 1999 International Paper Physics Conference Proceedings
2021 TAPPI Selects Young Professional of the Year
2021 TAPPI Selects Young Professional of the Year Emerging leaders represent International Paper, Jacobs, PCA and WestRock TAPPI is pleased to announce five recipients of this year’s Young
Experimental study and prediction of two-phase flow pattern distribution diagrams in multi-channel cylinder dryer, TAPPI Journal July 2023
ABSTRACT: The multi-channel cylinder dryer (MCD) is designed to improve heat transfer. Although there are numerous research studies on the pressure drop, heat transfer characteristics, and flow pattern in static state of MCD, there is little research on the flow pattern in the rotating state. In this paper, the distribution of flow pattern in MCD under different rotating speeds and steam mass flow rates is studied. Furthermore, the logistic regression method (LR) is used to predict the flow pattern diagrams. The results show that in the front section of the flow channel, the flow pattern is basically annular flow, which is not affected by mass flow rate and rotating speed. On the other hand, wavy flow, vortex flow, slug flow, and bubble flow can be observed when the fluid enters the middle and the end section. The higher the rotating speed and the steam mass flow rate, the more the flow pattern tends to be an annular and wavy flow. At the end of the passage, the flow pattern is mainly slug flow. The predicted flow pattern diagrams are in good agreement with the experimental result, and to obtain an effective flow pattern in the middle and the end section of the flow channel, the influence of increasing rotating speed is greater than that of increasing steam mass flow rate. However, the specific rotating speed, steam mass flow rate, and other parameters should still be set by combining with the actual situation. This work can provide some references for the further study of MCD flow characteristics.
Conference papers
Valorization of Willow Lignin Recovered in a Pilot-scale Biorefinery Based on Hot Water Extraction, 19IBBC
Valorization of Willow Lignin Recovered in a Pilot-scale Biorefinery Based on Hot Water Extraction, 19IBBC
Journal articles
Magazine articles
Technological evaluation of Pinus maximinoi wood for industrial use in kraft pulp production, TAPPI Journal August 2021
ABSTRACT: This study characterized Pinus maximinoi wood and evaluated its performance for pulp production. Samples of Pinus taeda wood were used as reference material. For both species, wood chips from 14-year-old trees were used for the technological characterization, pulping, bleaching process analysis, and pulp properties. A modified kraft pulping process was carried out targeting kappa number 28±5% on brownstock pulp. The bleaching sequence was applied for bleached pulp with final brightness of 87±1 % ISO. Refinability and resistance properties were measured in the bleached pulps. Compared to P. taeda wood, P. maximinoi showed slightly higher basic density (0.399 g/cm³) and higher holocellulose (64.5%), lignin (31.1%), and extractives content (4.5%), along with lower ash content (0.16%). P. maximinoi tracheids showed greater wall thickness (6.4 µm) when compared to P. taeda tracheids. For the same kappa number, P. maximinoi and P. taeda resulted in similar screened yield, with an advantage observed for P. maximinoi, which resulted in lower specific wood consumption (5.281 m³/o.d. metric ton), and lower black liquor solids (1.613 metric tons/o.d. metric ton). After oxygen delignification, P. maximinoi pulp showed higher efficiency on kappa reduction (67.2%) and similar bleaching chemical demand as P. taeda pulp. Compared to P. taeda pulps, the refined P. maximinoi pulps had similar results and the bulk property was 10% higher. Results showed that P. maximinoi is an interesting alternative raw material for softwood pulp production in Brazil.
Conference papers
Preparation of Biosilica-enriched Filler and an Example of its Use in a Papermaking Retention System, 2006 International Conference on Nanotechnology
Preparation of Biosilica-enriched Filler and an Example of its Use in a Papermaking Retention System, 2006 International Conference on Nanotechnology
Ultrasonic Systems for Liquid Absorption Measurements - Part.1. New Tester and Methodology for Mottle Problems, 2004 Coating and Graphic Arts Conference
Ultrasonic Systems for Liquid Absorption Measurements - Part.1. New Tester and Methodology for Mottle Problems, 2004 Coating and Graphic Arts Conference
Absorption of Starch During Surface Sizing with Different Methods, 1991 Coating Conference Proceedings
Absorption of Starch During Surface Sizing with Different Methods, 1991 Coating Conference Proceedings
Changing to Pressure Sensitive Labeling, 1995 Finishing and
Changing to Pressure Sensitive Labeling, 1995 Finishing and Converting Conference Proceedings