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Journal articles
Open Access
Maintenance of medium-voltage vacuum circuit breakers, TAPPI JOURNAL, March 1990, Vol. 73(3)

Maintenance of medium-voltage vacuum circuit breakers, TAPPI JOURNAL, March 1990, Vol. 73(3)

Journal articles
Open Access
An overview of recovery boiler performance evaluations, TAPPI JOURNAL, March 1990, Vol. 73(3)

An overview of recovery boiler performance evaluations, TAPPI JOURNAL, March 1990, Vol. 73(3)

Journal articles
Open Access
Practical aspects of alkaline sizing - on kinetics of alkyl ketene dimer reactions: hydrolysis of alkyl ketene dimer, TAPPI JOURNAL, November 1990, Vol. 73(11)

Practical aspects of alkaline sizing - on kinetics of alkyl ketene dimer reactions: hydrolysis of alkyl ketene dimer, TAPPI JOURNAL, November 1990, Vol. 73(11)

Journal articles
Open Access
The impact of oil burning on kraft recovery furnace so2 emissions, TAPPI JOURNAL, April 1991, Vol. 74(4)

The impact of oil burning on kraft recovery furnace so2 emissions, TAPPI JOURNAL, April 1991, Vol. 74(4)

Journal articles
Open Access
An overview of ferrography and its use in maintenance, TAPPI JOURNAL, August 1991, Vol. 74(8)

An overview of ferrography and its use in maintenance, TAPPI JOURNAL, August 1991, Vol. 74(8)

Journal articles
Open Access
Alternative methods for bleaching post consumer waste papers, TAPPI JOURNAL, August 1991, Vol. 74(8)

Alternative methods for bleaching post consumer waste papers, TAPPI JOURNAL, August 1991, Vol. 74(8)

Journal articles
Open Access
Bleaching of nonwood pulps: can sodium hydroxide be replaced with sodium carbonate in the alkaline extraction of nonwood pulps?, TAPPI JOURNAL, August 1991, Vol. 74(8)

Bleaching of nonwood pulps: can sodium hydroxide be replaced with sodium carbonate in the alkaline extraction of nonwood pulps?, TAPPI JOURNAL, August 1991, Vol. 74(8)

Journal articles
Open Access
On-machine maintenance, TAPPI JOURNAL, August 1991, Vol. 74(8)

On-machine maintenance, TAPPI JOURNAL, August 1991, Vol. 74(8)

Journal articles
Open Access
Fourier transform infrared (ftir) instrumentation for monitoring recovery boilers, TAPPI JOURNAL, December 1991, Vol. 74(12)

Fourier transform infrared (ftir) instrumentation for monitoring recovery boilers, TAPPI JOURNAL, December 1991, Vol. 74(12)

Journal articles
Magazine articles
Open Access
Crossflow filtration of green liquor for increased pulp production, improved green liquor quality, and energy savings, TAPPI JOURNAL October 2020

ABSTRACT: A new green liquor filtration system has been installed and commissioned at the Ence pulp mill in Pontevedra, Spain. The filtration system is based on microfiltration and was developed in collaboration with the KTH Royal Institute of Technology in Stockholm, Sweden. The patented method for efficient purification of green liquor decreases the non-process element (NPE) content by providing more efficient solids/liquid separation, reducing energy and chemical consumption in pulp mills and increasing production capacity by eliminating certain capacity bottlenecks. The process has been continuously tested at the Aspa Bruk Mill outside Askersund, Sweden, since 2013. The technology has proven to create nearly particulate-free green liquor during the purification process. The technology can also be used to polish white liquor to provide higher pulp quality.To provide for a simple and cost-effective installation, the system was designed as a skid-mounted unit that is pre-piped, instrumented, and tested before shipment. The system is modular and allows for easy expansion of capacity. This paper discusses the process design, process integration, and startup of the new system, along with experiences from the first months of operation.

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