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Hydroprocessing process for the improvement of the catalyst life

a catalyst and hydroprocessing technology, applied in the direction of hydrocarbon oil cracking, aromatic hydrocarbon hydrogenation, fuels, etc., can solve the problems of carbon monoxide and carbon dioxide generation, and achieve the effects of reducing long term deactivation, prolonging life, and improving catalyst li

Inactive Publication Date: 2012-01-05
PHILLIPS 66 CO
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Benefits of technology

[0008]This invention relates to a hydroprocessing process for the improvement of the catalyst life. Such inventive process is carried out with intermittent or discontinuous addition of a co-feed stream when hydroprocessing a petroleum based feedstock or an oxygen containing feedstock. More specifically, it has been found that intermittent or discontinuous addition of the co-feed stream such as carbon monoxide, carbon dioxide, or their precursors to the hydrogen stream can reduce the long term deactivation, extend the life and increase run length of a cobalt / molybdenum hydrotreating catalyst.

Problems solved by technology

However, unlike the petroleum based feedstock, it is found that carbon monoxide and carbon dioxide can be generated in the process of hydrotreating vegetable oils and / or animal fats.

Method used

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  • Hydroprocessing process for the improvement of the catalyst life
  • Hydroprocessing process for the improvement of the catalyst life

Examples

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example 1

[0032]Laboratory and commercial tests have demonstrated that vegetable oils and / or animal fats can be added to a refinery hydrotreater to produce transportation fuels. Since carbon monoxide and carbon dioxide can be generated from oxygen containing feedstocks such as animal fat and vegetable oils in this hydrotreating process, experiments were run to study the effects that CO and CO2 would have on the performance of a commercially available cobalt / molybdenum catalyst. The evaluation consisted of a seven month test run on a laboratory hydrotreater using a diesel feed with 2000 ppm sulfur. The hydrotreating conditions were set to achieve a product sulfur level of about 10 ppm. The experiment was carried out at 642 F, 1400 scf / B, 600 psig, 1.0 hr−1, Co / Mo catalyst and diesel feed (sulfur level of ˜2000 ppm) as base case. At these conditions, product sulfur level was about 10 ppm at the beginning of the run. During the 7 month test, CO or CO2 was co-fed with H2 intermittently. The catal...

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Abstract

This invention relates to a hydroprocessing process for the improvement of catalyst life. Such inventive process is carried out with intermittent or discontinuous addition of a co-feed stream when hydroprocessing petroleum based feedstock or an oxygen containing feedstock. More specifically, it has been found that intermittent or discontinuous addition of the co-feed stream such as carbon monoxide, carbon dioxide, or their precursors to the hydrogen stream can reduce the long term deactivation, extend the life and increase run length of a cobalt / molybdenum hydrotreating catalyst.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a non-provisional application which claims benefit under 35 USC §119(e) to U.S. Provisional Application Ser. No. 61 / 360,333 filed Jun. 30, 2010, entitled “HYDROPROCESSING PROCESS FOR THE IMPROVEMENT OF THE CATALYST LIFE,” which is incorporated herein in its entirety.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]None.FIELD OF THE DISCLOSURE[0003]This invention relates to a hydroprocessing process for the improvement of the catalyst life.BACKGROUND OF THE DISCLOSURE[0004]Hydroprocessing in general refers to a process of contacting a feedstock with hydrogen at an elevated temperature and pressure using catalyst which may vary according to the types of the feedstock, the purpose and the condition of the process.[0005]A classic example of hydroprocessing is the so called hydrotreating process, which refers to a process of contacting a petroleum feedstock with hydrogen at an elevated temperature and pr...

Claims

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Application Information

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IPC IPC(8): C10G47/14C10G45/00C10G45/04C10G45/06C10L1/182C10G45/48C10G47/12C10G45/10C10L1/00C10L1/18C10G47/02C10G45/46
CPCC10G3/45C10G2300/1055C10G3/48C10G3/50C10G45/00C10G45/02C10G45/04C10G45/06C10G45/08C10G45/38C10G45/44C10G45/48C10G45/50C10G47/00C10G47/12C10G47/20C10G49/04C10G2300/202C10G2300/70C10G2300/80C10G2300/1059C10G2300/1074C10G3/47C10G2300/1014C10G2300/1018C10G2300/1022C10G2300/104C10G2300/1044C10G2300/1051C10G3/46Y02P30/20
Inventor YAO, JIANHUAPARROTT, STEPHEN L.XU, XIAOCHUNGHONASGI, DHANANJAY B.
Owner PHILLIPS 66 CO
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