Digital twin technology is increasingly enabling operating companies to improve decision-making, optimize performance, and reduce process uncertainty. Accurate process simulation models form the foundation of effective digital twins for both individual plant units and full facility integration.

P&T develops high-fidelity digital twin models using rigorous process simulation techniques to represent both standalone units and complete plant systems. These models are calibrated against plant data to ensure reliable representation of real operating conditions, enabling scenario analysis, debottlenecking studies, control strategy evaluation, and performance optimization.

By integrating unit-level and whole-plant models, operators gain a powerful tool to understand process interactions, evaluate operating strategies, and identify hidden inefficiencies across the system.

If you would like to explore how digital twin technology can enhance your plant performance and operational insight, contact P&T at info@peng-tech.com.

PE&T developed operating limit diagrams to define the processing plant's operating envelope and identify production bottlenecks across key process units and utility systems. The assessment included analysis of equipment capacities, hydraulic constraints, control system limitations, and operational data to determine factors limiting plant throughput. The resulting diagrams provided a clear visualization of facility constraints under various operating scenarios, supporting production optimization, debottlenecking initiatives, capacity expansion planning, and improved operational decision-making

At Oil and Gas processing facilities, there are number of internal gas steams that are routed to the plant fuel gas system such as Boil-Off Gases, End-Flash Gases, AGR flash gases.  As these streams are dynamic, imbalances between fuel gas supply and plant demand may occur, leading to intermittent fuel gas flaring. 

At the same time, there are backup fuel gas supply sources (such as fuel from feed, sales gas, etc.) are available (typically maintained in a closed/standby condition) when there is insufficient fuel gas availability to meet plant demand.

One of the facilities supported by PE&T was experiencing frequent fuel gas flaring events due to system imbalance. A detailed review of the fuel gas network identified an existing sales gas line used for fuel gas make-up. A modification was developed to enable bidirectional operation of this line to improve system flexibility and reduce flaring. The modification consisted of new control system development, fuel gas quality verification against sales gas specification at various operating condition, hydraulic assessment evaluation, process safety analysis, compressor capacity and performance evaluation using dynamic simulation (power consumption, ASV system, operating envelope, etc.). 

For evaluation of flaring reduction opportunities and system adequacy assessments, contact PE&T at info@peng-tech.com.

At NGL fractionation units, additional value can often be realized by optimizing distillation column performance to increase controlled slippage of lighter components into heavier product streams. Depending on market product prices, this may include allowing increased C2 content C3 propane product or increased C3 content in C4 product, while maintaining product specifications, downstream processing equipment feed requirements and equipment operating limits.

P&ET has performed optimization for client seeking to maximize product value and increase exportable hydrocarbon volumes. As part of optimization evaluation rigorous steady-state and dynamic process simulations have been performed at various operating scenarios and transient conditions (such as composition or temperature changes during upstream molecular sieve drier change over) to identify optimum column operating parameters that maximize hydrocarbon recovery depending on market economics while maintaining specification compliance. The evaluations also included downstream equipment impact assessment, such as hydraulic evaluations, verification of exchangers/rotating equipment operating limits and performance as well as overall system operability to ensure safe and reliable long-term operation. 

If you are interested in fractionation column optimization for increased hydrocarbon recovery to maximize NGL product value, you can get in touch with us at: info@peng-tech.com

P&ET performed an assessment for  solvent upgrade in Amine unit with generic MDEA within Tail Gas Treating Unit. The objective was to assess solvents capable of improving H₂S absorption at elevated solvent and feed gas temperature, reducing SO₂ emissions from the incinerator/Thermal Oxizider, while maintaining CO₂ rejection to minimize acid gas recycle within the Sulfur Recovery Unit and reduce overall energy consumption.

Several proprietary solvent formulations were evaluated using performance data and simulation results provided by solvent vendors. PE&T reviewed and validated the vendor predictions using Aspen HYSYS and ProMax simulation models (where proprietary solvent packages available), with models previously benchmarked against plant operating data to ensure a consistent basis for comparison. The impact of each solvent on unit performance, operating conditions, utility consumption, H₂S absorption efficiency, and acid gas recycle rates was assessed. 

Based on the combined technical and economic evaluation, which included comparison of expected operational improvements, implementation requirements, and economic return relative to associated capital and operating costs, P&ET provided recommendations to support the client’s solvent selection and implementation strategy.

PE&T can analyze current catalyst and chemicals consumptions and compare against the industry benchmark. For example costly catalysts of mercaptan removal unit can be reduced by increasing oxidizer pre-heating or increasing air consumption without compromising residual Oxygen concentration limitation in the off-gas. Also, produced water chemicals that usually are over-consumed can be optimized by adjusting wash-water rate and operating temperature.

Also, PE&T can assess the Claus reactors catalyst condition and advise if partial replacement is sufficient to minimize shutdown duration and unnecessary fresh catalyst procurement.

If you are seeking to reduce the operating cost of the plant by optimizing chemicals and catalyst consumption while still meeting unit performance guarantees within integrity operating window please contact us at: info@peng-tech.com