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Evaluation of Cogeneration Potential for a Sulphuric Acid Recovery (SAR) Plant

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Abstract

Utilisation of excess high-grade heat is useful in creating value-added opportunities in a process. In this technical note, cogeneration of steam and power through combined heat and power (CHP) scheme was evaluated for a sulphur acid recovery (SAR) plant based in the UK. The evaluation was performed using a recently established automated targeting model (ATM). Due to inconsistent feed stream condition, the establishment of relationship between the economic feature and the feed stream concentration is essential in assisting the plant authority in understanding the overall performance of the CHP scheme in the SAR plant.

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Authors and Affiliations

  1. Centre of Excellence for Green Technologies/Department of Chemical and Environmental Engineering, University of Nottingham Malaysia, Broga Road, 43500, Semenyih, Selangor, Malaysia

    Zi Ming Yeo & Dominic C. Y. Foo

Authors
  1. Zi Ming Yeo
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  2. Dominic C. Y. Foo
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Corresponding author

Correspondence to Dominic C. Y. Foo.

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The authors declare that they have no conflict of interest.

Appendix – Data for heat integration studies

Appendix – Data for heat integration studies

Data to perform heat integration for the SAR plant are given in Tables 5, 6, 7 and 8.

Table 5 Data for Scenario 1: 63 wt% sulphur content
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Table 6 Data for Scenario 2: 65 wt% sulphur content
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Table 7 Data for Scenario 3: 67 wt% sulphur content
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Table 8 Data for Scenario 4: 69 wt% sulphur content
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To calculate the flow rate of VHPS produced from excess heat in the HRSG, \( \dot{m} \) (kg/h), Eq. 10 is used. The HRSG is assumed to have an efficiency, ηHRSG of 85% (Ganapathy 1996).

$$ \dot{m}=\frac{\eta_{HRSG}\ \Delta {H}_{excess}}{H_{VHPS}\ } $$
(10)

where ∆Hexcess is the excess heat (kJ/h), and specific enthalpy of VHPS, HVHPS = 2989.35 kJ/kg (assuming superheated steam is produced at T = 340 °C and P = 80 bar(a)).

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Yeo, Z.M., Foo, D.C.Y. Evaluation of Cogeneration Potential for a Sulphuric Acid Recovery (SAR) Plant. Process Integr Optim Sustain 3, 413–421 (2019). https://doi.org/10.1007/s41660-018-0072-z

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  • DOI: https://doi.org/10.1007/s41660-018-0072-z

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