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Multistage residue hydrocracking

A technology for hydrocracking and residual oil, which is applied in the directions of hydrocarbon oil cracking, hydrotreating process and treatment of hydrocarbon oil, etc. It can solve the problems of high catalyst consumption, reducing the conversion rate of residual oil, and catalyst loss of fluidity.

Active Publication Date: 2018-12-28
LUMMUS TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Deactivation of hydrocracking catalysts not only can significantly reduce resid conversion, but also requires more frequent swap out of expensive catalysts
The formation of a secondary liquid phase not only deactivates the hydrocracking catalyst, but also limits the maximum conversion, thereby resulting in higher catalyst consumption, which can defluidize the catalyst
Conversely, operating an asphaltenes hydrocracker at low severity will suppress sediment formation, but asphaltene conversion per pass will be lower

Method used

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  • Multistage residue hydrocracking
  • Multistage residue hydrocracking
  • Multistage residue hydrocracking

Examples

Experimental program
Comparison scheme
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Embodiment

[0047] The following examples are derived from simulation techniques. While work has been done, the inventors have not presented these examples in the past tense, in order to obey the rules of practicality.

Embodiment 1

[0054] used like figure 2 of Figure 4 The scheme shown in simulates a method for upgrading resid oil according to an embodiment. Similarly, for figure 2 The reference signs are used to indicate Figure 4 The same part in , and the description of the process flow is not repeated here. As in FIG. 3 , fresh / make-up hydrogen is fed to gas cooling, purification and compression system 46 via flow line 12 . Reaction stage 14 includes one reactor and reaction stage 22 includes two reactors connected in series.

[0055] The total feed rate of resid (via flow line 10 ) to the first reactor stage 14 is about 40000 BPSD. The first reactor stage 14 operates at a temperature and pressure sufficient to react approximately 52% of the resid. The second reactor stage 22 is operated at a temperature and pressure sufficient to react greater than 85% of the DAO feed. The combined separation of the secondary effluents recovered via streamlines 16 and 24, respectively, produces 17825 BPSD ...

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Abstract

The present invention relates to multistage residual oil hydrocracking. In particular, the present invention discloses methods for upgrading residual hydrocarbon feeds. The upgrading process may comprise: hydrocracking the resid in a first reaction stage to form a first stage effluent; hydrocracking a deasphalted oil fraction in a second reaction stage to form a second stage effluent; said first stage effluent and said second stage effluent are fractionated to recover at least one of a distillate hydrocarbon fraction and a resid hydrocarbon fraction; feeding said resid hydrocarbon fraction to a solvent deasphalting unit to provide an asphaltene fraction and deasphalted oil fractions.

Description

[0001] This application is a divisional case of an application whose PCT international filing date is June 16, 2010, PCT international application number is PCT / US2010 / 001736, and Chinese national application number is 201080027522.0. Apply. technical field [0002] Embodiments disclosed herein relate generally to methods for upgrading petroleum feedstocks. In one aspect, embodiments disclosed herein relate to methods for hydrocracking and deasphalting resids. In another aspect, embodiments disclosed herein relate to an integrated process for upgrading resid comprising multiple stages of hydrocracking. Background technique [0003] Hydrocarbon compounds serve a variety of purposes. In particular, hydrocarbon compounds are useful as, inter alia, fuels, solvents, degreasers, cleaning agents and polymer precursors. The most important source of hydrocarbon compounds is petroleum crude oil. The refining of crude oil into separated fractions of hydrocarbon compounds is a well ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/00
CPCC10G67/00C10G2300/206C10G2300/202C10G21/003C10G47/00C10G2300/107C10G2300/1077C10G2300/301C10G2300/42C10G67/049C10G67/04C10G21/00
Inventor 玛里奥·C·巴尔达萨里乌尧·K·穆卡赫杰阿维纳什·古普塔
Owner LUMMUS TECH INC