Plantwide Predictive Monitoring of Sulfur Emissions in Tail Gas Treatment Units

Speelmanns, Eva Marie; Rossi, Francesco; Leon-Garzon, Andres R.; Manenti, Flavio

doi:10.1016/b978-0-444-63577-8.50135-2

Cited by 2 publications

(1 citation statement)

References 10 publications

(9 reference statements)

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“…To increase the SRE, process modifications have been proposed, which include the installation of additional catalytic units, 9 the addition of a tail gas treatment unit (TGTU), 10 acid gas enrichment to increase feed quality, 7 optimization of the process variables, 11 moisture removal to overcome the equilibrium constraints of Claus reactions, 12 and oxygen enrichment. 13 The installation of an additional catalytic unit or an acid gas enrichment unit increases the capital and operating costs for a process that is already economically deficient, because of the low sale price of sulfur.…”

Section: Introductionmentioning

confidence: 99%

Effects of Oxygen Enrichment on Natural Gas Consumption and Emissions of Toxic Gases (CO, Aromatics, and SO₂) in the Claus Process

Hamadi

Ibrahim

Raj

2019

Ind. Eng. Chem. Res.

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The contaminants of acid gas feed to the Claus process plants such as benzene, toluene, ethylbenzene, and xylene (BTEX) increase the operational cost through catalyst deactivation and high fuel gas consumption and impact the sulfur recovery efficiency and the emission of toxic gases (such as CO and SO 2 ). In this study, a detailed and validated reaction mechanism for Claus feed combustion is utilized to simulate the Claus process plant by integrating Chemkin Pro and Aspen HYSYS software. The effect of oxygen enrichment of air on sulfur recovery, BTEX destruction, toxic gas emissions, and fuel gas consumption is studied. Upon increasing the oxygen concentration in air, BTEX concentration decreased substantially due to their enhanced oxidation by SO 2 and O 2 . An increase in oxygen concentration resulted in (a) increased SO 2 emission and decreased CO 2 emission from the incinerator, and (b) decreased fuel gas consumption in the incinerator. Interestingly, CO emission increased with increase in oxygen concentration in air as the furnace temperature increased up to 1350 °C, but it decreased with the further increase in the furnace temperature at higher oxygen concentrations. The reaction path analysis is presented to understand this decrease in CO emissions at high oxygen concentrations. The results demonstrate that a high oxygen concentration in air can be utilized to decrease fuel gas consumption and CO and CO 2 emissions in the Claus process. The oxygen concentration, required to minimize the emission of aromatics, SO 2 , CO, and CO 2 , was dependent on the feed composition, and the developed reaction mechanism can assist in optimizing the oxygen enrichment level required for a given feed in a Claus process plant.

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Section: Introductionmentioning

confidence: 99%

Effects of Oxygen Enrichment on Natural Gas Consumption and Emissions of Toxic Gases (CO, Aromatics, and SO₂) in the Claus Process

Hamadi

Ibrahim

Raj

2019

Ind. Eng. Chem. Res.

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Combustion kinetics of H2S and other sulfurous species with relevance to industrial processes

Raj

Ibrahim

Jagannath

2020

Progress in Energy and Combustion Science

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Plantwide Predictive Monitoring of Sulfur Emissions in Tail Gas Treatment Units

Cited by 2 publications

References 10 publications

Effects of Oxygen Enrichment on Natural Gas Consumption and Emissions of Toxic Gases (CO, Aromatics, and SO₂) in the Claus Process

Effects of Oxygen Enrichment on Natural Gas Consumption and Emissions of Toxic Gases (CO, Aromatics, and SO₂) in the Claus Process

Combustion kinetics of H2S and other sulfurous species with relevance to industrial processes

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Plantwide Predictive Monitoring of Sulfur Emissions in Tail Gas Treatment Units

Cited by 2 publications

References 10 publications

Effects of Oxygen Enrichment on Natural Gas Consumption and Emissions of Toxic Gases (CO, Aromatics, and SO2) in the Claus Process

Effects of Oxygen Enrichment on Natural Gas Consumption and Emissions of Toxic Gases (CO, Aromatics, and SO2) in the Claus Process

Combustion kinetics of H2S and other sulfurous species with relevance to industrial processes

Contact Info

Product

Resources

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Effects of Oxygen Enrichment on Natural Gas Consumption and Emissions of Toxic Gases (CO, Aromatics, and SO₂) in the Claus Process

Effects of Oxygen Enrichment on Natural Gas Consumption and Emissions of Toxic Gases (CO, Aromatics, and SO₂) in the Claus Process