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Journal articles
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Open Access
A feasibility study of using the organic Rankine cycle for power generation from the flue gases of recovery boilers, TAPPI Journal August 2022

ABSTRACT: Almost 415 tons/h of flue gases with a temperature of 160°C are released to the atmosphere from the recovery boiler of a pulp mill with capacity of 1000 air dried (a.d.) metric tons of pulp per day. This is a large waste heat stream that can be used to generate power, to decrease the operating costs of a pulp mill, and to save carbon dioxide (CO2) emissions. In this work, the feasibility of using an organic Rankine cycle (ORC) with ammonia as the working fluid to generate power from the flue gases of recovery boilers is studied. CHEMCAD and Taguchi methods are used for simulation of the process and for optimization of operating conditions, respectively. The temperature of the ammonia and flue gases at the exit of evaporator, exit pressure of the pump and turbine, and the degree of subcooling of ammonia at the exit of the condenser are five operating parameters that are manipulated to optimize the process. Three different scenarios are defined: minimizing the net power cost, maximizing the ORC efficiency, and maximizing the net profit. Different aspects of these scenarios, such as net power generation, cost, efficiency, and CO2 emission savings are discussed, and optimum operating conditions are reported.

Journal articles
Open Access
Industrial Wood Ash as a Soil Amendment for Crop Production, TAPPI JOURNAL, April 1998, Vol. 81(4)

Industrial Wood Ash as a Soil Amendment for Crop Production, TAPPI JOURNAL, April 1998, Vol. 81(4)

Journal articles
Open Access
1997 tappi salary survey, TAPPI JOURNAL, August 1998, Vol. 81(8)

1997 tappi salary survey, TAPPI JOURNAL, August 1998, Vol. 81(8)

Journal articles
Open Access
Global warming and climate change: strategic positioning for the pulp and paper industry, TAPPI JOURNAL, December 1998, Vol. 81(12)

Global warming and climate change: strategic positioning for the pulp and paper industry, TAPPI JOURNAL, December 1998, Vol. 81(12)

Journal articles
Open Access
Impact of large load variations on performance of an activated sludge process, TAPPI JOURNAL, February 1998, Vol. 81(2)

Impact of large load variations on performance of an activated sludge process, TAPPI JOURNAL, February 1998, Vol. 81(2)

Journal articles
Open Access
The cluster rule - A summary of phase 1, TAPPI JOURNAL, February 1998, Vol. 81(2)

The cluster rule - a summary of phase 1, TAPPI JOURNAL, February 1998, Vol. 81(2)

Journal articles
Open Access
On management: Does the pulp and paper industry have to lose the race?, TAPPI JOURNAL, January 1998, Vol. 81(1)

On management: does the pulp and paper industry have to lose the race?, TAPPI JOURNAL, January 1998, Vol. 81(1)

Journal articles
Open Access
An evaluation of quantification methods for plastics, TAPPI JOURNAL, July 1998, Vol. 81(7)

An evaluation of quantification methods for plastics, TAPPI JOURNAL, July 1998, Vol. 81(7)

Journal articles
Open Access
Paper science and engineering programs - a comparison of the curricula, TAPPI JOURNAL, October 1998, Vol.81(10)

Paper science and engineering programs - a comparison of the curricula, TAPPI JOURNAL, October 1998, Vol.81(10)

Journal articles
Open Access
Characterization of effluents from tcf bleaching of softwood kraft pulp, TAPPI JOURNAL, September 1998, Vol. 81(9)

Characterization of effluents from tcf bleaching of softwood kraft pulp, TAPPI JOURNAL, September 1998, Vol. 81(9)

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