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Journal articles
Open Access
UNTITLED - [95Dec93.pdf]

Comparison of effluents from tcf and ecf bleaching of kraft pulps, TAPPI JOURNAL, December 1995, Vol. 78(12)

Journal articles
Open Access
Pulping of jute, February 1995 Tappi Journal [95Feb106.pdf]

Pulping of jute, TAPPI JOURNAL, February 1995, Vol. 78(2)

Journal articles
Open Access
Extended delignification of southern pine with anthraquinone and polysulfide, February 1995 Tappi Journal [95Feb126.pdf]

Extended delignification of southern pine with anthraquinone and polysulfide, TAPPI JOURNAL, February 1995, Vol. 78(2)

Journal articles
Open Access
Refining: Good practice for refining the types of fiber found in modern paper furnishes, February 1995 Tappi Journal [95Feb147.pdf]

Good practice for refining the types of fiber found in modern paper furnishes, TAPPI JOURNAL, February 1995, Vol. 78(2)

Journal articles
Open Access
Superheated steam drying of paper: effect of sulfonation level, TAPPI JOURNAL, July 1995, Vol. 78(7)

Superheated steam drying of paper: effect of sulfonation level, TAPPI JOURNAL, July 1995, Vol. 78(7)

Journal articles
Open Access
Bleaching efficiency of formamidine sulfinic acid (fas) in comparison to hydrosulfite, borohydride, and peroxide in one and two stages

Bleaching efficiency of formamidine sulfinic acid (fas) in comparison to hydrosulfite, borohydride, and peroxide in one and two stages

Journal articles
Open Access
Reducing chlorinated organic compounds from bleached kraft mills through first stage substitution of chlorine dioxide for chlorine, TAPPI JOURNAL, June 1995, Vol. 78(6)

Reducing chlorinated organic compounds from bleached kraft mills through first stage substitution of chlorine dioxide for chlorine, TAPPI JOURNAL, June 1995, Vol. 78(6)

Journal articles
Magazine articles
Open Access
Online monitoring of the size distribution of lime nodules in a full-scale operated lime kiln using an in-situ laser triangulation camera, TAPPI Journal June 2024

ABSTRACT: To maximize efficiency of the recausticizing process in a pulp mill, producing a reburned lime with high and consistent reactivity is process critical. Prior investigations have demonstrated a correlation between the reactivity of lime and its nodule size, as well as the dusting behavior of the kiln. Therefore, monitoring the nodule size produced in the lime kiln could be a promising indirect method to measure the performance of the lime kiln. The objective of this investigation was to evaluate the utility of a laser triangulation camera for online monitoring of nodule size distribution for the lime kiln. A series of full-scale trials were performed in a lime kiln of a kraft pulp mill in which a camera was installed at the exit conveyor to analyze the lime discharging from the kiln. The nodule size distribution was analyzed for correlation with the lime temperature, flue gas temperature, and rotational speed of the kiln. The monitoring demonstrated temporal stability, and the results showed that the lime temperature had the most significant effect on the nodule size. The rotational speed of the lime kiln and the flue gas temperature showed limited effect on nodule size, but they had significant impact on the specific energy demand. The overall conclusion of the study is that the camera methodology effectively correlates lime temperature with nodule size distribution, and it advocates for the methods of implementation in automating lime temperature control, facilitating the production of consistently reactive lime at a lower specific energy consumption.

Journal articles
Magazine articles
Open Access
Continuous digester rapid thinning, TAPPI Journal June 2024

ABSTRACT: Carbon steel continuous digesters built after the early 1980s are fully stress relieved, so stress corrosion cracking has been less of a concern. However, these newer digesters were designed to run modified cooking processes that have turned out to be much more corrosive than those running with conventional cooking. This corrosion is mainly associated with softwood digesters and appears to be flow related. Average corrosion rates of 40 mil/year are possible on the exposed shell between the wash and extraction screens. The corrosion patterns are visually distinct from surfaces in the upper digester and below the wash screens. This paper goes into practical detail on where it occurs, the causes, visual identification, inspection planning and results evaluation, and finally, how to mitigate this damage, which consists of applying a corrosion resistant barrier. Some discussion on dealing with general corrosion throughout the digester is included.

Journal articles
Magazine articles
Open Access
Editorial: Special issues in March and May TAPPI Journal focus on the latest pulp manufacture and engineering research, TAPPI Journal March 2024

ABSTRACT: This issue, organized by Editor-in-Chief Peter Hart, features content from the 2023 PEERS/IBBC Conference that has been peer reviewed for publication in TAPPI Journal. The papers encompass a range of topics:œ Two papers, from researchers Suarez et al. at WestRock, examine pulp from nonwoods like wheat straw and sugar-cane bagasse using a holistic life cycle analysis approach to project environmental performance in packaging products. The results can help mills make decisions about which fibers ensure a low carbon footprint.

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