The Experts below are selected from a list of 72 Experts worldwide ranked by ideXlab platform

Véronique Halloin - One of the best experts on this subject based on the ideXlab platform.

  • Methanol synthesis in a multifunctional reactor
    Chemical Engineering Science, 1999
    Co-Authors: H. Ben Amor, Véronique Halloin
    Abstract:

    Abstract Catalytic methanol synthesis from synGas is conducted in a multifunctional reactor. The reactor consists in an annular catalyst layer surrounded by a wound copper tube acting as a condenser. The condensed products are separated in-situ from the reacting medium through a hydraulic seal, in order to drive the equilibrium composition towards the product. A first set of experiments were carried out on a small laboratory prototype at pressures between 35 and 50 bar, and with a maximum temperature in the catalyst layer of 240 °C. Conversions up to 80% in CO and of 84% in H 2 were reached. A comparison is made between the present performances of this multifunctional reactor and the current performances of a conventional reactor. In its present state of development, spatial velocity are several orders of magnitude lower than in conventional designs, but the much lower Recycle ratio enabled by our device could result in reduction of the power requirement for the Recycle Gas Compressor as well as in reduction of the size of the equipment in the loop. Operating parameters such as pressure, inlet composition, and space velocity are being investigated in order to improve these performances, in particular to reduce the Recycle ratio.

H. Ben Amor - One of the best experts on this subject based on the ideXlab platform.

  • Methanol synthesis in a multifunctional reactor
    Chemical Engineering Science, 1999
    Co-Authors: H. Ben Amor, Véronique Halloin
    Abstract:

    Abstract Catalytic methanol synthesis from synGas is conducted in a multifunctional reactor. The reactor consists in an annular catalyst layer surrounded by a wound copper tube acting as a condenser. The condensed products are separated in-situ from the reacting medium through a hydraulic seal, in order to drive the equilibrium composition towards the product. A first set of experiments were carried out on a small laboratory prototype at pressures between 35 and 50 bar, and with a maximum temperature in the catalyst layer of 240 °C. Conversions up to 80% in CO and of 84% in H 2 were reached. A comparison is made between the present performances of this multifunctional reactor and the current performances of a conventional reactor. In its present state of development, spatial velocity are several orders of magnitude lower than in conventional designs, but the much lower Recycle ratio enabled by our device could result in reduction of the power requirement for the Recycle Gas Compressor as well as in reduction of the size of the equipment in the loop. Operating parameters such as pressure, inlet composition, and space velocity are being investigated in order to improve these performances, in particular to reduce the Recycle ratio.

Sinopec Guangzhou - One of the best experts on this subject based on the ideXlab platform.

Lee Sangjoo - One of the best experts on this subject based on the ideXlab platform.

Eisenma Robe - One of the best experts on this subject based on the ideXlab platform.

  • Dry Gas Seal Failure due to Axial Sub-synchronous Vibration on a Hydrogen Recycle Gas Compressor.
    Turbomachinery Laboratory Texas A&M Engineering Experiment Station, 2018
    Co-Authors: Eisenma Robe
    Abstract:

    Case StudyApproximately 6 months after commissioning a new hydrotreater hydrogen Recycle Gas Compressor the site experienced a dry Gas seal failure. The investigation revealed wear of the primary seal dynamic sealing element due to movement thought to be caused by design and installation issues. The onset of a second failure indicated the root cause had not been identified. Further investigation discovered the Compressor was experiencing high axial vibration during operation ultimately causing the seal failures. This case study will present the data from each failure, monitoring methods used, analysis conducted, options evaluated and the corrective action taken to resolve the problem