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Neste Jacobs to perform a comprehensive energy study for Unipetrol's refinery site in Czech Republic Technology, engineering and project management company Neste Jacobs and the leading refinery and petrochemical group Unipetrol, which constitutes an important part of the Czech industry, have signed an agreement for Neste Jacobs to perform a comprehensive energy efficiency study of Unipetrol's Litvinov oil refinery in Czech Republic. Neste Jacobs has a longstanding experience in improving energy efficiency for oil refineries and petrochemical plants. The energy efficiency study will be performed by utilizing Neste Jacobs' proprietary NAPCON energy performance analysis, that is a unique combination of high level process know-how and modelling skills, pinch-technology, equipment expertise and automation solutions. Neste Jacobs' energy analysis with a modular approach is a globally proven solution to identify the feasible improvement potential and create a practical action plan to implement the improvements. NAPCON energy performance analysis is fully customizable according to customer needs. The study will review existing energy consumption and production within the refinery process units. This includes pinch-analysis to identify opportunities to improve heat integration of the process. This is combined with fired heater optimization to maximize the benefits. On top of energy efficiency, the study includes waste water optimization assessment to minimize the water usage and recycling of waste water. "We are happy to provide our extensive energy efficiency and water management knowledge in the form of an energy study for Unipetrol's refinery in Litvinov", says Jarmo Suominen, CEO of Neste Jacobs. "Our excellent project team will provide systematic study to Unipetrol to discover solutions, which are both practical and lucrative." "Unipetrol has set an Energy Management System certified according to the ISO 50001:2011. The study is another very important step for a sustainable program in energy efficiency improvement in our company. Neste Jacobs' high technical knowledge of refinery projects and detailed process understanding convinced us to select them as our preferred partner in this project. They have good references on energy efficiency studies especially in oil refineries," says Tomáš Herink, Member of the Unipetrol Group's Board of Directors responsible for research and development. For more information, please contact: Satu Stolt, Marketing and Communication Manager, Neste Jacobs Oy, tel. +358 50458 9779 Pavel Kaidl, Spokesperson, the Unipetrol Group, tel: +420 736 502 520, e-mail: pavel.kaidl@unipetrol.cz Neste Jacobs is a preferred solution provider of high-quality technology, engineering and project services for a wide range of industries in the fields of oil and gas, petrochemicals, chemicals, biorefining, biochemicals, biopharma and industrial infrastructure. We have 60 years of experience in technology development and industrial investment projects as well as maintenance and performance improvement in Europe, North and South America, Asia and the Middle East. In addition to our home market Nordic countries we are looking to grow in the global expanding markets. We employ 1300 professionals globally. www.nestejacobs.com The Unipetrol refinery and petrochemical group constitutes an important part of the Czech industry. It is the only crude oil processor in the Czech Republic, one of the most important producers of plastics and the owner of the largest network of filling stations Benzina. In the field of refinery and petrochemical production, it is also a major player in Central and Eastern Europe. It has been part of the PKN Orlen refinery and petrochemical group since 2005. http://www.unipetrol.cz/en


Liiri M.,Aalto University | Hatakka H.,Lappeenranta University of Technology | Kallas J.,Lappeenranta University of Technology | Aittamaa J.,Neste Jacobs Oy | Alopaeus V.,Aalto University
Chemical Engineering Research and Design | Year: 2010

In this study a combination of computational fluid dynamics (CFD) and multiblock model is used for modelling crystal growth in a 100dm3 suspension crystallizer equipped with two turbine impellers. Local hydrodynamics and crystal suspension densities were modelled using CFD. Simulation results were compared with experimental results to verify flow profile and slip velocities (Hatakka et al., 2008, 2009), and classification of crystals. Results from CFD simulations were then translated to a proper form and used as input data for the multiblock model. The same multiblock model has previously been used successfully for modelling gas-liquid systems (Laakkonen, 2006). For this study a growth model for potassium dihydrogen phosphate (KDP) was imported into the multiblock model. We used the power-law growth model including activity-based driving force. The growth model was developed based on single crystal experiments of KDP (Liiri et al., 2006). Growth of KDP crystals in the 100dm3 suspension crystallizer was simulated with the multiblock model. Verification was done by comparing the simulated results with results from crystal growth experiments. © 2009 The Institution of Chemical Engineers.


Aalto H.,Neste Jacobs Oy
IFAC Proceedings Volumes (IFAC-PapersOnline) | Year: 2010

Many methods exist for model reduction of dynamical systems. However, only in a few cases a method can be picked from the literature and applied just like pushing a button. The structure and properties of the target system need to be investigated prior to model reduction. Natural gas pipeline systems are complex, large-scale systems with a special structure which must be recognized. Model reduction methods suitable for interconnected systems are tested on a true natural gas pipeline system with 600 state variables and almost 200 input variables.


Aalto H.,Neste Jacobs Oy
IFAC Proceedings Volumes (IFAC-PapersOnline) | Year: 2013

Full-order filters which are optimal with respective to the H2 norm may be formulated as convex optimization problems with Linear Matrix Inequality (LMI) constraints. Reduced-order filter design problems are non-convex, but various elegant relaxations resulting in suboptimal filters are reported in the literature. In this paper, a very simple approach is taken, where the original system is first reduced to a smaller dimension, and then a suboptimal, reduced-order filter with respect to the H2 norm is obtained through straightforward numerical optimization. The smoothing stabilization task following this problem formulation is solved by simply adding a penalty function to the cost function of the optimization problem. Finally, for large-scale filter design problems, acceleration of the H2 norm minimization utilizing another reduced-order model is used. The method shows good performance when applied on a benchmark 5-state filtering problem and on a larger 150-state filtering problem. © IFAC.


Torkkeli J.,Neste Jacobs Oy | Saukkonen T.,Aalto University | Hanninen H.,Aalto University
Materials and Corrosion | Year: 2014

Stress corrosion cracking of carbon steel in aerated ethanol-gasoline blend was studied using notched slow strain rate testing. Characterization of the fracture surface was made using SEM and SEM-EDS. Intergranular stress corrosion cracking (SCC) was produced in ethanol-gasoline blend with 15.5 wt% ethanol that was produced by evaporation of light C4 and C5 fractions from the ethanol-gasoline blend with 10.4 wt% of ethanol. Chloride concentration of 2 mg/L was found to cause transition from intergranular SCC to fully transgranular SCC in ethanol-gasoline blend with 85 wt% of ethanol. Transgranular SCC was found to initiate mainly at the pearlite phase and intergranular SCC initiated equally on the pearlite and ferrite phases. Chloride caused localized crystallographic pitting on the transgranular SCC fracture surfaces near the lamellar cementite left on the steel surface due to selective dissolution of ferrite from pearlite. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Natural gas pipeline systems are not commonly discussed as target systems for Model Predictive Control (MPC). Over decades, complex, non-linear dynamic system models have been developed and trials to directly use these complex models as a part of a real-time (optimal) control or real-time optimization solution have been presented. Quite few are those approaches known from power systems and process industries: just pick the relevant dynamics and try to linarize, if possible. This paper describes how MPC can be applied on a natural gas pipeline system. The dynamic models required for MPC are assumed linear, which turns out to be a good approximation of reality. Natural Gas Pipeline Systems offer, because of their physical properties, an opportunity to use a'priori information in the model identification phase, which we make full use of. A demonstration example, though simplified, shows that significant improvement in pipeline operations can be achieved with MPC. © 2015, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.


Liu Z.,Aalto University | Roininen J.,Neste Jacobs Oy | Pulkkinen I.,Aalto University | Sainio T.,Lappeenranta University of Technology | Alopaeus V.,Aalto University
Computers and Chemical Engineering | Year: 2013

A new numerical method is proposed to solve a nonlinear general rate model, frequently used to describe chromatographic multicomponent separations. The method is based on minimization of errors in chromatographic column profile moments, and it belongs to the family of weighted residual methods. Compared to most traditional weighted residual methods, the present formulation has some clear advantages. Firstly, it is inherently mass conserving. Secondly, the separation characteristic values of the effluent curve (retention time, physical dispersion and skewness) are predicted with good accuracy. Thirdly, the boundary conditions are treated naturally as source terms. The method is inherently of high order, so it gives high accuracy with a relatively low number of variables. This is a remarkable benefit especially for model parameter fitting or process optimization, when the model has to be solved repeatedly. © 2013 Elsevier Ltd.


Liu Z.,Aalto University | Suntio V.,Aalto University | Kuitunen S.,Aalto University | Roininen J.,Neste Jacobs Oy | Alopaeus V.,Aalto University
Industrial and Engineering Chemistry Research | Year: 2014

Accurate description of mass transfer and chemical reactions in anisotropic biomass particles is crucial when formulating truly predictive biorefinery process models. Due to the natural anisotropy of biomass particles, these can be accurately modeled with partial differential equations only by considering the mass transfer in all three dimensions. However, a large amount of memory and CPU time is needed to solve this three dimensional (3D) model. In order to reduce the computational load, this article introduces a method to simplify the 3D model into a 1D model. Furthermore, the traditionally used low order finite difference method is replaced by the high order moment based weighted residual method. Using the simplified 1D modeling approach and the new numerical method, a much lower number of variables is needed than used when solving the 3D model with the finite difference method, meanwhile providing similar average concentration profiles as the 3D model. © 2014 American Chemical Society.


Torkkeli J.,Neste Jacobs Oy | Hirsi V.,Aalto University | Saukkonen T.,Aalto University | Hanninen H.,Aalto University
Materials and Corrosion | Year: 2013

Mechanistic study of stress corrosion cracking of carbon steel in fuel-grade ethanol was made using slow strain rate testing and constant tensile load testing at yield strength stress level of the steels. Characterization of the fracture surface was made using SEM and SEM-EDS. Selective dissolution of ferrite from pearlite phase was observed. Crack initiation took place preferably from pearlite phase. Corroded zones consisting of crystallographic pits were found from fracture surfaces. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Neste Jacobs and Baltic Connector have signed a contract to provide Project Management Services for Baltic Connector pipeline Technology, engineering and project management company Neste Jacobs and Baltic Connector, a state-owned company, have signed a contract regarding Project Management Services for Baltic Connector gas pipeline between Finland and Estonia. Neste Jacobs will work as Owner's Engineer in the integrated project management team. The project enables the interconnection and integration of the Baltic and Finnish gas markets to the EU's internal energy markets. Baltic Connector gas pipeline will increase maintenance reliability and energy security in the whole area. The Baltic Connector project will include building of a 150 kilometer long bi-directional gas transmission pipeline, from which 80 kilometers will be constructed offshore subsea between Paldiski (Estonia) and Inkoo (Finland) and two onshore gas transmission pipelines to Finland and in Estonia. The project will also include construction of a gas metering station and two compressor stations to Inkoo and Paldiski. The project will start in November 2016 and it is estimated to be finished in December 2019. The transfer capacity of the completed pipeline will be 7.2 million m3 per day. "We are delighted to be chosen as the Project Management Services partner for the Baltic Connector project as we have been involved in building the whole natural gas infrastructure in Finland from the very beginning. Neste Jacobs has a solid track record in providing Owner's Engineering and Project Management Services for hydrocarbon and bio-industries including our vast experience from many LNG terminal projects", says Jarmo Suominen, Managing Director, Neste Jacobs Oy. "The selection of a partner was based on competitive bidding and Neste Jacobs proved to be the strongest bidder for this important project. We look forward to successful co-operation with Neste Jacobs' team and believe that having a reliable and experienced partner will assist in keeping the deadline and budget of the project", says Herkko Plit, President and CEO, Baltic Connector Oy. For more information, please contact: Neste Jacobs is a preferred solution provider of high-quality technology, engineering and project services for a wide range of industries in the fields of oil and gas, petrochemicals, chemicals, biorefining, biochemicals, biopharma and industrial infrastructure. We have 60 years of experience in technology development and industrial investment projects as well as maintenance and performance improvement in Europe, North and South America, Asia and the Middle East. In addition to our home market Nordic countries we are looking to grow in the global expanding markets. We employ 1300 professionals globally. www.nestejacobs.com Baltic Connector Oy is a State-owned company established in 2015. Its task is to implement Finland's part of the Baltic connector gas pipeline project. The Baltic connector is a bi-directional gas pipeline between Finland and Estonia that will connect the gas networks of Finland and the Baltic countries. www.balticconnector.fi

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