4 présentations

• 
  10h30 - 10h55

  Computing steps with the conjugate residuals method in unconstrained optimization

  • Marie-Ange Dahito, prés., Polytechnique Montréal
  • Dominique Orban, GERAD - Polytechnique Montréal

  The method of conjugate residuals (CR) is similar to the method of conjugate gradients (CG) in several respects. We describe and analyze a truncated version of CR in the context of trust-region and linesearch methods for continuous unconstrained optimization. We present convergence results and report on numerical experience.

• 
  10h55 - 11h20

  "On the figure of columns" of Lagrange, revisited

  • Francis Huot-Chantal, prés., Université de Montréal
  • Michel C. Delfour, Université de Montréal

  The column’s bucking load problem was formulated by Lagrange around 1770. This eigenvalue problem is well-known for being nondifferentiable. Since the problem is Hadamard semidifferentiable, a necessary optimality condition can be obtained. Numerical results will then give us an insight about propreties of the problem.

• 
  11h20 - 11h45

  Kinetic parameter estimation of Claus reaction

  • Ecem Muge Andoglu, prés., Bilecik Seyh Edebali University
  • Suleyman Kaytakoglu, Anadolu University

  The Claus process is the most significant gas desulfurization process, recovering elemental sulfur from acid gas with high hydrogen sulfide concentration. For the purpose of developing a representative and accured model of this process, estimation of the kinetic parameters is an important task. This study aims to estimate the optimal kinetic parameters of the Claus reaction by traditional and modern methods.

• 
  11h45 - 12h10

  A review on the optimization studies of sulfur recovery unit

  • Ecem Muge Andoglu, prés., Bilecik Seyh Edebali University
  • Suleyman Kaytakoglu, Anadolu University

  Acid gas obtained from oil refineries contains large amounts of hydrogen sulfide which are not allowed as the off gas or burned to the atmosphere. Claus process is the most famous method for sulfur recovery from hydrogen sulfide in oil and natural gas refinery units. In this talk, we will present the previous works on optimization of Claus unit and aim to open the mind to explore possible applications in this field.