Search

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

Showing 571–580 of 807 results (Duration : 0.014 seconds)
Journal articles
Magazine articles
Open Access
New learnings and strategies for meeting future recovery boiler particulate emission limits with existing electrostatic precipitators, TAPPI Journal June 2021

ABSTRACT: It is foreseeable that recovery boiler particulate emission limits in the United States and Canada will continue to get more stringent with time. Because of this, continued improvement of emission control equipment, as well as a better understanding of how operating parameters affect performance, are necessary. Although electrostatic precipitators (ESPs) are often viewed as a mature technology, many improvements in ESP technology continue to be developed. In recent years, academic efforts have improved the understanding of recovery boiler operating conditions on ESP performance. Additionally, advancements in materials, power supplies, and design continue to improve the efficiency and reliability of ESPs.This paper discusses how recovery boiler and electrostatic precipitator (ESP) operating factors affect ESP perfor-mance based on process simulations and practical experience, and how these learnings can be implemented to improve future operation of existing ESPs.

Conference papers
DEVELOPMENT OF CONVERGING-DIVERGING MULTI-JET NOZZLES FOR MOLTEN SMELT SHATTERING IN KRAFT RECOVERY BOILERS, 20PEERS Conferene

DEVELOPMENT OF CONVERGING-DIVERGING MULTI-JET NOZZLES FOR MOLTEN SMELT SHATTERING IN KRAFT RECOVERY BOILERS, 20PEERS Conferene

Conference papers
Impact of Ozone Bleaching on Effluent Discharge, 20PEERS Conference

Impact of Ozone Bleaching on Effluent Discharge, 20PEERS Conference

Conference papers
Does the kappa number method accurately reflect lignin conte

Does the kappa number method accurately reflect lignin content in nonwood pulps?, 2017PEERS

Conference papers
Pilot Papermaking with Malaysian Oil Palm Empty Fruit Bunch

Pilot Papermaking with Malaysian Oil Palm Empty Fruit Bunch Pulp: Part 3, 2017PEERS

Conference papers
Characterization of a Dusting Lime Kiln • A Mill Study, 2017

Characterization of a Dusting Lime Kiln • A Mill Study, 2017PEERS

Conference papers
Use of Vent Stack Temperature as a Feedforward Variable for

Use of Vent Stack Temperature as a Feedforward Variable for Dissolver TTA Control, 2017PEERS

Journal articles
Magazine articles
Open Access
The solubility of calcium carbonate in green liquor handling systems, TAPPI Journal October 2019

ABSTRACT: The formation of hard calcite (CaCO3) scale in green liquor handling systems is a persistent problem in many kraft pulp mills. CaCO3 precipitates when its concentration in the green liquor exceeds its solubility. While the solubility of CaCO3 in water is well known, it is not so in the highly alkaline green liquor environment. A systematic study was conducted to determine the solubility of CaCO3 in green liquor as a function of temperature, total titratable alkali (TTA), causticity, and sulfidity. The results show that the solubility increases with increased temperature, increased TTA, decreased causticity, and decreased sulfidity. The new solubility data was incorporated into OLI (a thermodynamic simulation program for aqueous salt systems) to generate a series of CaCO3 solubility curves for various green liquor conditions. The results help explain how calcite scale forms in green liquor handling systems.

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