Pre-design work and basic engineering solutions

Analysis and substantiation of process solutions at the early stages of design/revamping. Assistance in selecting optimum internals based on process and economic parameters.

Key Services

Analysis of input data
review of process parameters, properties of process media and efficiency requirements.
Modelling and calculations
hydrodynamic, mass-transfer and CFD modelling to select the type of Spliteks internals.
Techno-economic assessment
comparative technology analysis, cost calculations and recommendations for optimising internals.
Concept development and preliminary design solutions

Results & Benefits

Selecting the supplier’s internals at an early design stage eliminates design errors and the need for subsequent project rework
Reduced capital expenditure through selection of the optimum solution
Well-founded engineering solutions for specific tasks

Value for You

Many years of experience in process calculations and design
Use of modern software packages
Integrated approach: from analysis to implementation
Proprietary range of manufactured internals

Example of solution implementation

Client request:

Increasing the draw-off of the fourth vacuum side cut from column K-5 of the CDU/VDU-6 unit and improving its quality (reducing the colorimeter colour reading) while increasing the tar viscosity to approximately 300 mm²/s or higher, Improving fractionation sharpness and optimising operation of the wash section in vacuum column K-5 of the CDU/VDU-6 unit.

Spliteks decision:

  • Modelling column operation based on actual operating data
  • Report and recommendations on changing the column operating mode and partially replacing the column internals
  • Engineering
  • Manufacturing at the facility in Serpukhov
  • Delivery of the batch to the customer’s site
  • Installation supervision at the customer’s site and advice during commissioning

Result
Increasing the draw-off of the fourth vacuum side cut by 22% (!). Improved column efficiency and reduced pressure drop.
About

Spliteks analyses requirements and proposes solutions for selecting internals at the early design stages, making it possible to substantiate the technical and economic aspects of the project, minimise risks and improve production efficiency in the oil and gas and chemical industries during pre-design work.

Analysis of input data 

Pre-design work begins with a thorough analysis of the input data provided. Spliteks specialists examine process parameters, the properties of operating media and efficiency requirements and, where necessary, assess existing column internals to identify potential equipment bottlenecks.

Design preparation involves collecting and processing information on feed streams, operating conditions and required product quality. This approach ensures that all subsequent solutions are adapted to the facility’s actual operating conditions, eliminating unnecessary changes at later stages.

Modelling and calculations

Spliteks performs engineering modelling and internals selection using modern software packages for hydraulic and mass-transfer calculations. Calculations are based on actual operating data. We optimise the configuration of internal components—trays, packing, distributors, reactor internals and separator internals—taking account of capacity and pressure drop. CFD modelling visualises the flows, enabling technically sound design decisions.

Recommendations and conceptual solutions

On the basis of calculations for existing systems, recommendations are developed to optimise the internals and increase equipment capacity. The technical upgrade solution includes proposals for changing operating conditions and replacing internals, selecting materials and integrating the solution into the existing equipment.

Developing conceptual designs for specific conditions at the early design stages reduces the number of iterations and therefore the Customer’s costs.

Services and work stages

Spliteks offers a complete range of services for pre-design work, from initial analysis to document issue and equipment supply. The key stage includes consultations, calculations, a feasibility study, preparation of recommendations, selection, manufacture, supply and installation of internals at the site. In-house expertise in engineering calculations guarantees quality proven by numerous completed projects.

The work is performed in close cooperation with the customer and takes account of all documentation requirements. This ensures a smooth transition to the construction stage, where the proposed solutions are integrated into the existing process systems.