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公开(公告)号：US20210018477A1
公开(公告)日：2021-01-21
申请号：US16930691
申请日：2020-07-16
Applicant: ExxonMobil Research and Engineering Company
Inventor： Eric B. Sirota , Bridget E. Lang , Birbal Chawla
Abstract: Systems and methods are provided for determining an asphaltene solubility distribution for a petroleum sample and/or other hydrocarbon sample. A vessel for performing the method can include both packing material(s) and sidewall(s) that correspond to substantially inert materials. The vessel can initially contain a precipitating solvent suitable for causing precipitation of asphaltenes from a hydrocarbon sample. Examples of a precipitating solvents can correspond to n-heptane, toluene, and mixtures of n-heptane and toluene. The petroleum sample is then introduced into the vessel, along with a carrier solvent. The volume of the precipitating solvent can be large relative to the sample, so that the solubility of asphaltenes in the sample becomes dependent on the properties of the precipitating solvent. If asphaltenes are precipitated, the asphaltenes can be washed out of the column using a dissolution solvent. The asphaltenes washed out using the dissolution solvent can then be characterized to determine a total asphaltene content.
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公开(公告)号：US10570343B2
公开(公告)日：2020-02-25
申请号：US15696592
申请日：2017-09-06
Applicant: ExxonMobil Research and Engineering Company
Inventor： Birbal Chawla , William G. Borghard
Abstract: Systems and methods for the separation of classes of paraffins from a hydrocarbon sample can include a first column comprising a first zeolite adsorbent material for the isolation of one or more n-paraffins from the hydrocarbon sample and generation of a first eluate including one or more iso-paraffins and one or more one-ring or multi-ring naphthenes. The system can further include a second column, coupled to the first column, comprising a second zeolite adsorbent material for the isolation of one or more iso-paraffins or one-ring naphthenes from the first eluate and generation of a second eluate including one or more multi-ring naphthenes.
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公开(公告)号：US20180080915A1
公开(公告)日：2018-03-22
申请号：US15696628
申请日：2017-09-06
Applicant: ExxonMobil Research and Engineering Company
Inventor： Birbal Chawla , Cathleen Yung , Bryan E. Hagee
CPC classification number: G01N33/28 , C07C7/00 , C07C7/005 , C07C7/11 , C07C7/13 , G01N1/34 , G01N1/405 , G01N24/08 , G01N24/082 , C07C11/02
Abstract: Methods and systems for quantifying olefinic hydrocarbons in a hydrocarbon sample are provided. The methods can include separating olefinic hydrocarbons from the hydrocarbon sample by high pressure liquid chromatography. The methods can further include measuring the proton resonance signals of the separated olefinic hydrocarbons and quantifying the weight percentage of different subtypes of olefinic hydrocarbons and hence the weight percentage of total olefinic hydrocarbons in the hydrocarbon sample based at least in part on the proton resonance signals.
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公开(公告)号：US20180079970A1
公开(公告)日：2018-03-22
申请号：US15696592
申请日：2017-09-06
Applicant: ExxonMobil Research and Engineering Company
Inventor： Birbal Chawla , William G. Borghard
CPC classification number: C10G25/03 , B01D2253/108 , B01D2256/24 , B01J20/165 , B01J29/7007 , B01J29/7046 , C07C7/13 , C07J9/00 , C10G2300/1085 , C07C9/22 , C07C13/02
Abstract: Systems and methods for the separation of classes of paraffins from a hydrocarbon sample can include a first column comprising a first zeolite adsorbent material for the isolation of one or more n-paraffins from the hydrocarbon sample and generation of a first eluate including one or more iso-paraffins and one or more one-ring or multi-ring naphthenes. The system can further include a second column, coupled to the first column, comprising a second zeolite adsorbent material for the isolation of one or more iso-paraffins or one-ring naphthenes from the first eluate and generation of a second eluate including one or more multi-ring naphthenes.
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