公开(公告)号：US11598758B2

公开(公告)日：2023-03-07

申请号：US16930691

申请日：2020-07-16

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Eric B. Sirota ,  Bridget E. Lang ,  Birbal Chawla

IPC: G01N1/22 ,  G01N31/02 ,  G01N33/28 ,  G01N21/47 ,  G01N13/00 ,  G01N30/88

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.

公开(公告)号：US20240068132A1

公开(公告)日：2024-02-29

申请号：US18269882

申请日：2021-11-10

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Manesh Gopinadhan ,  Stuart E. Smith ,  Nicole M. Callen ,  Clarence E. Chase ,  Kazem V. Edmond ,  Srinivasan Rajagopalan ,  Eric B. Sirota ,  Daniel J. Ryan

IPC: D01F9/145 ,  C10C3/02

CPC classification number: D01F9/145 ,  C10C3/023

Abstract: Nucleation enhancement and/or growth rate improvement of mesophase in pitch compositions derived from hydrocarbon feedstocks can be achieved by: reacting in a reaction zone a blend comprising an isotropic feed and a seeding agent, to produce a reacted pitch having a mesophase content of about 10 vol % to 100 vol %, based on the total volume of the reacted pitch, and a softening point (Tsp) below 400° C.; wherein the seeding agent is about 50 wt % or less, based on the total weight of the blend; wherein the seeding agent has a mesophase content of about 0.01 vol % to 100 vol %, based on the total volume of the seeding agent.

公开(公告)号：US20250023045A1

公开(公告)日：2025-01-16

申请号：US18349227

申请日：2023-07-10

Applicant: ExxonMobil Technology and Engineering Company ,  The Trustees of the University Of Pennsylvania

Inventor： Manesh Gopinadhan ,  Stuart E. Smith ,  Eric B. Sirota ,  Bharath Natarajan ,  Chinedum O. Osuji ,  Yuma Morimitsu ,  Kazem V. Edmond

IPC: H01M4/583 ,  H01M4/62 ,  H01M10/0525

Abstract: Disclosed embodiments may include a material having a composition including a mesophase pitch material between approximately 5.0% to 95.0% and having a viscosity of between approximately 0.01 to 102 Pascal seconds (Pa·s) in a temperature range of between approximately Ts