Large scale optimization of a sour water stripping plant using surrogate models

In this work, we propose a new methodology for the large scale optimization and process integration of complex chemical processes that have been simulated using modular chemical process simulators. Units with significant numerical noise or large CPU times are substituted by surrogate models based on Kriging interpolation. Using a degree of freedom analysis, some of those units can be aggregated into a single unit to reduce the complexity of the resulting model. As a result, we solve a hybrid simulation-optimization model formed by units in the original flowsheet, Kriging models, and explicit equations. We present a case study of the optimization of a sour water stripping plant in which we simultaneously consider economics, heat integration and environmental impact using the ReCiPe indicator, which incorporates the recent advances made in Life Cycle Assessment (LCA). The optimization strategy guarantees the convergence to a local optimum inside the tolerance of the numerical noise.

Large school bus design vehicle dimensions.

Arkansas State Highway and Transportation Department, Little Rock

The development of UTCS/NETSIM/ICG: an integrated urban traffic control system - network simulation - interactive computer graphics program. Final report.

Transportation Department, Office of University Research, Washington, D.C.

Some measures of accessibility of large trucks to the Texas highway system. Final report.

Texas State Department of Highways and Public Transportation, Transportation Planning Division, Austin

Linkage of the 1999-2008 National Health and Nutrition Examination Surveys to traffic indicators from the National Highway Planning Network /

Mode of access: Internet.

Advanced technologies for improving large-truck safety on two-lane secondary roads. Final report.

Virginia Department of Transportation, Richmond

Guidelines for permitting overloads. Part I: effect of overloaded vehicles on the Indiana highway network. Final report.

Indiana Department of Transportation, Indianapolis

A methodology for the assessment of truck lane needs in the Texas highway network. Final report.

Texas State Department of Highways and Public Transportation, Transportation Planning Division, Austin

Network assignment methods for the analysis of truck-related highway improvements. Interim report.

Texas State Department of Highways and Public Transportation, Transportation Planning Division, Austin

Truck lane needs methodology: a heuristic approach to solve a five option discrete network design problem. Interim report.

Texas State Department of Highways and Public Transportation, Transportation Planning Division, Austin

A comparison of microcomputer packages for network-based highway planning. Interim report.

Texas State Department of Highways and Public Transportation, Transportation Planning Division, Austin

Arterial network inventory manual.

"Manual no. N211M1."

Evaluation of peak-flow data network of small streams in Missouri /

Mode of access: Internet.

Evaluation of highway advisory radio in the I-35W traffic management network /

Mode of access: Internet.

Report on airport capacity : large HUB airports in the United States /

Mode of access: Internet.