Inventory audit notice: TAPPI Press orders will not be processed from August 21–28 during our fiscal year-end inventory audit. Orders placed during this time will ship starting August 31, in the order received. Normal payment processing also resumes August 31.

Thanks for your patience — this helps us serve our members better.

Search

Use the search bar or filters below to find any TAPPI product or publication.

Showing 6,961–6,970 of 7,449 results (Duration : 0.017 seconds)

Filters

Industry

Topics

Content Type

Publications

Level of Knowledge

Committees

Event Type

Collections

Conference papers
An Integrated Study of Flue Gas Flow and Superheating Process in Recovery Boiler using Computational Fluid Dynamics and 1D-Process Modelling, 19PEERS

An Integrated Study of Flue Gas Flow and Superheating Process in Recovery Boiler using Computational Fluid Dynamics and 1D-Process Modelling, 19PEERS

Conference papers
CAUSES OF POOR DREGS SETTLING IN A GREEN LIQUOR CLARIFIER, 19PEERS

CAUSES OF POOR DREGS SETTLING IN A GREEN LIQUOR CLARIFIER, 19PEERS

Conference papers
COMBATTING LIME KILN RINGING PROBLEMS AT THE ARAUCO CONSTITUCIÓN MILL, 19PEERS

COMBATTING LIME KILN RINGING PROBLEMS AT THE ARAUCO CONSTITUCIÓN MILL, 19PEERS

Conference papers
Performance of Structural Materials in Biomass Liquefaction Environments, 19PEERS

Performance of Structural Materials in Biomass Liquefaction Environments, 19PEERS

Conference papers
Examining upgrade options when rotary kiln tires are mounted on the kiln shell with no filler bars, 19PEERS

Examining upgrade options when rotary kiln tires are mounted on the kiln shell with no filler bars, 19PEERS

Journal articles
Magazine articles
Open Access
Mill experience of calcium carbonate scale formation in green liquor pipelines, TAPPI Journal August 2020

ABSTRACT: Experience of hard calcite (CaCO3) scale formation in green liquor pipelines at four kraft pulp mills was systematically investigated to determine if there is any correlation between the severity of the scaling problem at each mill and the design and operating conditions of its causticizing plant. The results show that the high degree of supersaturation of calcium ions (Ca2+) in the liquor is the main contributing factor. Mills that operate at a lower green liquor total titratable alkali (TTA), higher causticity, and a larger liquor temperature drop are more likely to produce a green liquor that is supersaturated with Ca2+, and thus experience more severe scaling problems. In order to minimize CaCO3 scaling, the green liquor handling equipment should be operated as steady as possible to avoid conditions that allow Ca2+ to be supersaturated. The strategies include minimizing variations in liquor TTA, insulating the green liquor pipelines to reduce temperature gradients, and adding lime mud to weak wash to provide seeds for precipitation to occur on mud particles instead of on metal substrate.

Journal articles
Magazine articles
Partnerships for Technology Challenges, 2018 PEERS

Partnerships for Technology Challenges, 2018 PEERS

Conference papers
Venturi Injection for Pulp and Paper Mills, 2018 PEERS

Venturi Injection for Pulp and Paper Mills, 2018 PEERS

Conference papers
Use of Direct Steam Injection to Control Black Liquor Temperature and Ensure Optimal Drop Size, 2018 PEERS

Use of Direct Steam Injection to Control Black Liquor Temperature and Ensure Optimal Drop Size, 2018 PEERS

Conference papers
Are There Advantages to Using 50% versus 10% Strength Peroxide in Pulp Bleach Plants?, 2018 PEERS

Are There Advantages to Using 50% versus 10% Strength Peroxide in Pulp Bleach Plants?, 2018 PEERS

Inside this Section