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Additive for hydroconversion process and method for making and using same

a hydroconversion process and additive technology, applied in the field of additives, can solve the problems of high metal, sulfur and asphaltene content of hydroconversion processes in general, inability to achieve high conversion (more than 80wt%) without recycling, and more difficult by-product processing

Inactive Publication Date: 2013-05-23
INTREVEP SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes using an additive to control the flow of liquids in a reactor. This additive prevents foaming, which helps to control the temperature of the process. In simpler terms, the additive helps to improve the performance of the reactor by controlling the flow of fluids.

Problems solved by technology

It is noted, however, that the catalysts used are potentially expensive.
Hydroconversion processes in general for heavy residues, with high metal, sulfur and asphaltene contents, cannot reach high conversions (more than 80wt %) without recycle and high catalyst concentration.
Additives which are known to be used to try to control foam in reactors can be expensive and can chemically decompose in the reaction zone, potentially leading to more difficult by-product processing and the like.

Method used

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  • Additive for hydroconversion process and method for making and using same
  • Additive for hydroconversion process and method for making and using same
  • Additive for hydroconversion process and method for making and using same

Examples

Experimental program
Comparison scheme
Effect test

example 1

Coke / Asphaltene Scavenger Capability

[0052]This example illustrates asphaltenes, coke and / or polycondensed ring aromatic compounds catching capability of the carbonaceous additive.

[0053]In this example, Petrozuata petroleum coke was used to generate the carbonaceous additive, this coke comes from delayed coking process. This coke was thermally treated through a moderate combustion process (porogenesis) with air to generate some porosity and surface area. The particle size was adjusted in the range of 200-900 μm, following the scheme represented in FIG. 2, the carbonaceous additive was generated and the following experimentation was effected.

[0054]Table 55 shows Petrozuata coke composition.

TABLE 5Elementwt %Carbon86.6-88.9Hydrogen4.2-4.7Sulfur4.4-4.8Vanadium0.20-0.22Nickel0.30-0.54Iron0.106Ashes0.21-0.52Volatiles 9.9-12.0

[0055]10 g of Merey / Mesa vacuum residue (VR) were mixed with 100 ml of toluene; the mixture was placed in stirring to dissolve the VR. After that, 120 ml of n-heptane...

example 2

Metal Scavenger

[0057]This example illustrates metal scavenger capability of the carbonaceous additive.

[0058]In this example, flake like material containing the unconverted vacuum residue and the remaining organic additive was used to quantify the metal content and metal mass balance of the hydroconversion process.

[0059]In this example the remaining organic additive was separated by using a desolidification procedure with toluene as solvent. Following the scheme represented in FIG. 1, flakes where generated and the following experimentation was effected.

[0060]50.00 g of flakes were dissolved in 350 ml of hot toluene, this mixture was then centrifuged at 1500 rpm for 20 minutes to separate the unconverted residue of the additive. The solids were decanted and washed using toluene Soxhlet extraction, which is a continuous extraction method whereby fresh solvent continuously flows through the compound to be extracted. After that, the solids were dried in a vacuum oven for two hours at 13...

example 3

Fluid-Dynamic and Temperature Control

[0063]Following the scheme represented in FIG. 1, the following experimentation was effected.

[0064]The test was carried out using sample of vacuum residue (VR) of Canadian oil, prepared from Athabasca crude.

[0065]This VR was fed into a slurry bubble column reactor without any internals, with a total capacity of 10 BPD, with a temperature control based on a preheater system and cool gas injection. This reactor has a length of 1.6 m and a diameter of 12 cm.

[0066]For this test the reactor was operated at 0.42 T / m3h. Three serially connected vertical slurry reactors were used during this test. The conditions were maintained for 11 days.

[0067]Conditions are summarized in Table 8.

TABLE 8Feedstock characteristicsAPI density (60° F.)2.04Residue 500° C.+ (wt %)97.60Asphaltenes (insolubles in heptane) (wt %)21.63Metal content (V + Ni) (wtppm)462Sulfur (wt %)6.56Process variablesWSHV (T / m3h)0.42Feedrate (kg / h)24Total pressure (barg)169Reactor average temper...

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Abstract

An additive for hydroconversion processes includes a solid organic material having a particle size of between about 0.1 and about 2,000 μm, a bulk density of between about 500 and about 2,000 kg / m3, a skeletal density of between about 1,000 and about 2,000 kg / m3 and a humidity of between 0 and about 5 wt %. Methods for preparation and use of the additive are also provided. By the use of the additive of the present invention, the hydroconversion process can be performed at high conversion level.

Description

BACKGROUND OF THE INVENTION[0001]The invention relates to an additive used in catalytic processes for hydroconversion.[0002]Hydroconversion processes in general are known, and one example of such a process is that disclosed in co-pending and commonly owned U.S. patent application Ser. No. 12 / 113,305, filed May 1, 2008. In the process disclosed therein, catalysts are provided in aqueous or other solutions, one or more emulsions of the catalyst (aqueous solution) in oil are prepared in advance and the emulsions are then mixed with the feedstock, with the mixture being exposed to hydroconversion conditions.[0003]The disclosed process is generally effective at the desired conversion. It is noted, however, that the catalysts used are potentially expensive. It would be beneficial to find a way to recover this catalyst for re-use.[0004]In addition, foaming and the like in hydroconversion reactors can create numerous undesirable consequences, and it would be desirable to provide a solution ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B01J35/00
CPCC10G49/10B01J35/0026B01J20/30B01J20/3021Y10T428/2982C10G2300/4025C10G2300/205C10G2300/80B01J20/3078C10G47/02B01J35/31
Inventor CANELON, CARLOSRIVAS, ANGELDELGADO, OMAYRAPAIVA, MIGUELDI SARLI, GIUSEPPEZACARIAS, LUIS
Owner INTREVEP SA
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