Process Ecology

Process Ecology

Benzene Emissions Advisor Services

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Over the last decade, there has been a trend to reduce benzene emissions from glycol dehydrators in the Upstream Oil & Gas sector. In Alberta, the Energy Resources Conservation Board (ERCB) introduced a directive to further encourage emissions reductions; non-compliance with ERCB directives could potentially result in suspension of operations. Specific documentation and graphs are required which can potentially identify operational improvements that will result in lower benzene emissions. In addition, capital modifications and process alternatives may also potentially result in vastly reduced benzene emissions.

Process Ecology can help you ensure that the requirements of ERCB Directive 039 or similar guidelines are met by developing the required engineering calculations, documentation and reports based on operating data, as well as making certain that calculation methods and assumptions used are generating accurate results.

The challenges in fitting the appropriate data to the thermodynamic model used for process simulation cannot be underestimated; off-the-shelf commercial simulation tools highlighted in the Best Management Practices Guide (CAPP, 2009) do not properly support the property predictions of EG-water mixtures in particular. Process Ecology has the expertise to validate the associated simulation models to ensure accurate results that can lead to true optimal operating conditions.

The evaluation of alternatives for benzene reductions can benefit greatly from a simulation study where a sensitivity analysis is included on the main economic parameters that impact the operating cost of these units. Process Ecology has the expertise to support the evaluation of such options and to recommend the optimal arrangements for minimum emissions at minimum cost.

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