Method for preparing light oil from low-hydrogen-content oil with self-contained asphalten

A technology of asphaltene and hydrogen content, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrogenation process, etc., and can solve the problems of poor combustion performance, increased investment, increased energy consumption, etc.

Inactive Publication Date: 2015-04-08
何巨堂
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AI Technical Summary

Problems solved by technology

[0004] ① To produce delayed coke, it is necessary to build a coking unit, increase investment, increase energy consumption, and at the same time convert a large amount (about 50%) of components with a conventional boiling point of 500-540°C into coke. Industrial production shows that medium-temperature coal tar in northern Shaanxi As a raw material, the yield of coke is about 14.5%, and the yield of coking gas is about 5.0%, and the quality of coke is poor, and the scope of use is limited; it belongs to the uneconomical "oil zoom, gas" process;
[0005] ②In the production of fuel oil, in order to meet the requirements o

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  • Method for preparing light oil from low-hydrogen-content oil with self-contained asphalten

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0113] Example one

[0114] The medium and low temperature coal tar produced during the coal-to-blue charcoal process is shown in Table 1. The annual processing capacity is 500,000 tons / year, the annual operating hours are 7920, and the quantity is 63132kg / h. In order to separate the light residue components to the greatest extent, and at the same time concentrate the asphaltenes, ash, and particulates in the coal tar in the heavy coal tar to obtain the coal cyanine with a high softening point, the operation steps of the present invention are as follows:

[0115] In the deep vaporization and separation part of STEP1, under the condition that no significant coking reaction occurs, the raw material F01 is heated at a temperature of 420℃ and a pressure of 0.10MPaA, and then separated into a vapor phase V1 (59072kg / h, accounting for 93.57% of raw material F01) and liquid phase L1 (4060 / h, accounting for 6.43% of raw material F01) containing residual oil components. The weight content o...

Example Embodiment

[0122] Example two

[0123] Based on Example 1, in the vaporized oil recovery step, the vapor phase V1 from the deep vaporization separation part STEP1 and the stripped oil vapor V2 from the steam stripping part STU are condensed to obtain the hydrocarbon oil HPF.

[0124] In the hydrogenation step, the hydrocarbon oil HPF is converted into a hydrogenated oil product through the hydro-upgrading process HP. The hydro-upgrading process HP includes the hydrorefining process HT of the hydrocarbon oil HPF, and also includes the separation hydrorefining process HT. The hydrocracking process HC of the hydrorefined wax oil HTVGO, which is mainly composed of hydrocarbon components with a conventional boiling point higher than 350°C, is obtained by the hydrogenation product oil HTP.

[0125] This example formed a combined process of medium and low temperature coal tar deep drawing and vaporized oil hydro-upgrading process.

[0126] Table 1 Analysis data of coal tar properties

[0127]

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Abstract

The invention provides a method for preparing light oil from low-hydrogen-content oil with self-contained asphalten. The method is suitable for processing of medium-low temperature coal tar. According to the invention, a deep evaporation method is adopted to isolate the medium-low temperature coal tar into distillate oil vapor V1 and liquid L1 under the condition of no occurrence of obvious coking, wherein the liquid L1 is mainly composed of macromolecular colloidal bituminous components; after cooling and molding, the liquid L1 used as soft coal or green coal can be used as fire coal to achieve green storage and usage of the liquid L1; and the distillate oil vapor V1 is condensed to obtain an oil product which can be used for preparing a clean oil product via a hydrogenation process. The method for preparing light oil from low-hydrogen-content oil with self-contained asphalten provided by the invention enables the product direction of the macromolecular colloidal bituminous components in medium-low temperature coal tar to jump out of the traditional range of coke, coal tar pitch, fuel oil, suspended-bed or bubbling-bed hydrogenation raw material to produce coal-like products; and the traditional concept of ultimate obtainment of light oil and residual oil through vapor-liqiud separation is converted into the concept of ultimate obtainment of light oil and solid through vapor-liqiud separation.

Description

technical field [0001] The present invention relates to a kind of method for producing light oil from asphaltene-containing low-hydrogen content oil; particularly the present invention relates to a kind of method for producing light oil from asphaltene-containing coal tar; more particularly The present invention relates to a method for producing light oil from medium and low temperature coal tar containing asphaltenes. The medium and low temperature coal tar is separated into distillate steam V1 by adopting a deep vaporization method without obvious coking reaction. And liquid L1 mainly composed of macromolecular colloidal asphalt-like components, liquid L1 can be used as "soft media" or coal green after cooling and forming, which can be used as coal to realize its environmental protection storage and use; distillate steam V1 The condensed oil can be hydrogenated to produce clean oil. The present invention jumps out the product direction of the macromolecular colloidal pitch-...

Claims

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Application Information

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IPC IPC(8): C10G7/00C10G67/00
CPCC10G7/00C10G67/00
Inventor 何巨堂
Owner 何巨堂
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