The Experts below are selected from a list of 3441 Experts worldwide ranked by ideXlab platform

Longcheng Liu - One of the best experts on this subject based on the ideXlab platform.

  • Energy Saving in Crude Oil Atmospheric Distillation Columns by Modifying the Vapor Feed Inlet Tray
    Chemical Engineering & Technology, 2011
    Co-Authors: Mehdi Arjmand, Luis Moreno, Longcheng Liu
    Abstract:

    Optimization of a typical crude oil atmospheric distillation unit and reduction of energy conservation were carried out through modifying the implementation and change in the Flash Zone of the tower. A conventional procedure in such units involves the combination of liquid and vapor product of the prefractionation train surge drum upon introduction to the tower. However, it is theoretically illustrated and represented by simulation means that introducing the vapor feed into the upper stages of the distillation column separately can lead to an energy saving of 12.6 % in the condenser duty, an increased liquid-to-gas flow (L/G) at certain points of the column, and hence to a reduction in diameter and investment costs of new tower designs of approximately US$ 0.7 million a–1. The proposal can be put into practice without the need of additional equipments or additional cost of difficult rerouting the streams. An industrial case study of a steady-state crude oil distillation unit is given by simulation provision of AspenHysys™.

Mehdi Arjmand - One of the best experts on this subject based on the ideXlab platform.

  • Energy Saving in Crude Oil Atmospheric Distillation Columns by Modifying the Vapor Feed Inlet Tray
    Chemical Engineering & Technology, 2011
    Co-Authors: Mehdi Arjmand, Luis Moreno, Longcheng Liu
    Abstract:

    Optimization of a typical crude oil atmospheric distillation unit and reduction of energy conservation were carried out through modifying the implementation and change in the Flash Zone of the tower. A conventional procedure in such units involves the combination of liquid and vapor product of the prefractionation train surge drum upon introduction to the tower. However, it is theoretically illustrated and represented by simulation means that introducing the vapor feed into the upper stages of the distillation column separately can lead to an energy saving of 12.6 % in the condenser duty, an increased liquid-to-gas flow (L/G) at certain points of the column, and hence to a reduction in diameter and investment costs of new tower designs of approximately US$ 0.7 million a–1. The proposal can be put into practice without the need of additional equipments or additional cost of difficult rerouting the streams. An industrial case study of a steady-state crude oil distillation unit is given by simulation provision of AspenHysys™.

Wolf Jürgen - One of the best experts on this subject based on the ideXlab platform.

  • Haze in Pluto's atmosphere: Results from SOFIA and ground-based observations of the 2015 June 29 Pluto occultation
    'Elsevier BV', 2021
    Co-Authors: Person, Michael J., Bosh, Amanda S., Zuluaga, Carlos A., Sickafoose, Amanda A., Levine, Stephen E., Pasachoff, Jay M., Babcock, Bryce A., Dunham, Edward W., Mclean, Ian S., Wolf Jürgen
    Abstract:

    On UT 29 June 2015, the occultation by Pluto of a bright star (r′ = 11.9) was observed from the Stratospheric Observatory for Infrared Astronomy (SOFIA) and several ground-based stations in New Zealand and Australia. Pre-event astrometry allowed for an in-flight update to the SOFIA team with the result that SOFIA was deep within the central Flash Zone (~22 km from center). Analysis of the combined data leads to the result that Pluto's middle atmosphere is essentially unchanged from 2011 and 2013 (Person et al. 2013; Bosh et al. 2015); there has been no significant expansion or contraction of the atmosphere. Additionally, our multi-wavelength observations allow us to conclude that a haze component in the atmosphere is required to reproduce the light curves obtained. This haze scenario has implications for understanding the photochemistry of Pluto's atmosphere

Luis Moreno - One of the best experts on this subject based on the ideXlab platform.

  • Energy Saving in Crude Oil Atmospheric Distillation Columns by Modifying the Vapor Feed Inlet Tray
    Chemical Engineering & Technology, 2011
    Co-Authors: Mehdi Arjmand, Luis Moreno, Longcheng Liu
    Abstract:

    Optimization of a typical crude oil atmospheric distillation unit and reduction of energy conservation were carried out through modifying the implementation and change in the Flash Zone of the tower. A conventional procedure in such units involves the combination of liquid and vapor product of the prefractionation train surge drum upon introduction to the tower. However, it is theoretically illustrated and represented by simulation means that introducing the vapor feed into the upper stages of the distillation column separately can lead to an energy saving of 12.6 % in the condenser duty, an increased liquid-to-gas flow (L/G) at certain points of the column, and hence to a reduction in diameter and investment costs of new tower designs of approximately US$ 0.7 million a–1. The proposal can be put into practice without the need of additional equipments or additional cost of difficult rerouting the streams. An industrial case study of a steady-state crude oil distillation unit is given by simulation provision of AspenHysys™.

Person, Michael J. - One of the best experts on this subject based on the ideXlab platform.

  • Haze in Pluto's atmosphere: Results from SOFIA and ground-based observations of the 2015 June 29 Pluto occultation
    'Elsevier BV', 2021
    Co-Authors: Person, Michael J., Bosh, Amanda S., Zuluaga, Carlos A., Sickafoose, Amanda A., Levine, Stephen E., Pasachoff, Jay M., Babcock, Bryce A., Dunham, Edward W., Mclean, Ian S., Wolf Jürgen
    Abstract:

    On UT 29 June 2015, the occultation by Pluto of a bright star (r′ = 11.9) was observed from the Stratospheric Observatory for Infrared Astronomy (SOFIA) and several ground-based stations in New Zealand and Australia. Pre-event astrometry allowed for an in-flight update to the SOFIA team with the result that SOFIA was deep within the central Flash Zone (~22 km from center). Analysis of the combined data leads to the result that Pluto's middle atmosphere is essentially unchanged from 2011 and 2013 (Person et al. 2013; Bosh et al. 2015); there has been no significant expansion or contraction of the atmosphere. Additionally, our multi-wavelength observations allow us to conclude that a haze component in the atmosphere is required to reproduce the light curves obtained. This haze scenario has implications for understanding the photochemistry of Pluto's atmosphere