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New Plantweb Architecture for Instumentation Maintance and Control, 1998 Engineering Conference Proceedings

New Plantweb Architecture for Instumentation Maintance and Control, 1998 Engineering Conference Proceedings

Leaching of Chloride and Potassium from Electrostatic Precipitator Catch, 1998 International Chemical Recovery Conference Proceedings

Leaching of Chloride and Potassium from Electrostatic Precipitator Catch, 1998 International Chemical Recovery Conference Proceedings

Economics of Introducing Kenaf Fibers as a Complementary Fiber Source in Existing Wood Pulp Mills, 1998 Pulping Conference Proceedings

Economics of Introducing Kenaf Fibers as a Complementary Fiber Source in Existing Wood Pulp Mills, 1998 Pulping Conference Proceedings

Weathering a Tough Economy, 2008 Engineering, Pulping and Environmental Conference

Weathering a Tough Economy, 2008 Engineering, Pulping and Environmental Conference

Journal articles
Magazine articles
Open Access
Continuous tannin extraction by use of screw reactor, TAPPI Journal February 2021

ABSTRACT: A pilot-size screw reactor (extraction unit) was used for tannin extraction of spruce. Yield of the same magnitude or better was obtained when comparing a screw reactor with batch reactors. A longer presoaking time in water seemed to be better than a short one for obtaining higher yield. A higher yield is obtained with lower dry-water ratio, which suggests that the internal diffusion in bark does not determine mass transfer as much as is the case without presoaking of bark. The higher dry-water ratio decreased the yield. The prior soaking of the bark also minimized the mechanical reactor feeding problems (clogging). The benefits of a screw reactor likely are that run time changes for different process conditions are flexible; it simplifies design and construction of an industrial unit for tannin production; and it saves space because of the need for fewer and smaller intermediate storage tanks.

Journal articles
Magazine articles
Open Access
Case study: Paper mill power plant optimization—balancing steam venting with mill demand, TAPPI Journal June 2020

ABSTRACT: Most Power departments are tasked with generating steam to support mill wide operations, generate electricity, and reduce operating costs. To accomplish these tasks, power boilers generate high pressure steam that is reduced to intermediate and low pressures for process utilization in the mill by means of steam turbine generator extraction or pressure reducing valves. The most economical method to reduce steam pressure is the use of steam turbine generators, as electricity is generated from the steam when it is reduced in pressure. Electricity that is produced by these generators provides a substantial financial benefit and helps offset overall operational costs. To achieve tangible financial gains, the mill must evaluate the overall cost of steam production and the price of electricity.The current work provides a case study of power plant optimization that evaluated electricity production and steam production costs balanced with mill steam demand. Process and cost optimization led to a significant reduc-tion in low pressure steam venting, resulting in reduced fuel consumption and reduced operating cost.

Paper Recycling Division, 2008 Engineering, Pulping and Environmental Conference

Paper Recycling Division, 2008 Engineering, Pulping and Environmental Conference