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Residual oil and coal tar total fraction hydrogenation method

A technology of coal tar and full distillate, applied in the petroleum industry, refining hydrocarbon oil, refining to remove heteroatoms, etc., can solve the problems of low added value, reduced total oil yield, low energy efficiency, etc., and reduce equipment and operating costs , Inhibit asphaltene agglomeration and increase liquid yield

Active Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can produce light oil products in a large amount, obtain clean product oil, and produce high-quality coke; but the total oil yield is reduced, and a part of the oil is converted into coke and dry gas with low added value, and the energy efficiency is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The present embodiment adopts the residual oil and coal tar shown in Table 1, the ratio of the two is 30:70, the catalyst used is A, and the catalyst addition (in terms of the sum weight of Fe and Zn) is 1 / 2 of the total weight of coal tar and residual oil. 0.5%, the auxiliary agent is sulfur powder, the amount of auxiliary agent added in the oil slurry, the molar ratio of sulfur to iron metal in the catalyst is 1. After the above materials are mixed, they are pumped into the preheating furnace, and the catalyst is vulcanized under the action of hydrogen, and the mixed material from the preheating furnace is mixed with part of the hydrogen into the slurry bed reactor, and demetallization is carried out under the action of hydrogen and catalyst. After the hydrogenation pretreatment of impurities and the lightening reaction of part of the material, it enters the thermal high fraction to obtain two parts, gas and liquid, and the liquid enters the separator to obtain hydroge...

Embodiment 2

[0039] The present embodiment adopts the residual oil and coal tar shown in table 1, the ratio of the two is 50:50, and the catalyst used is B, and the catalyst addition (in terms of Fe and Zn sum weight) is based on the total weight of coal tar and residual oil 1.0%, the auxiliary agent is sulfur powder, the amount of auxiliary agent added in the oil slurry, the molar ratio of sulfur to iron metal in the catalyst is 1.2. After the above materials are mixed, they are pumped into the preheating furnace, and the catalyst is vulcanized under the action of hydrogen, and the mixed material from the preheating furnace is mixed with part of the hydrogen into the slurry bed reactor, and demetallization is carried out under the action of hydrogen and catalyst. After the hydrogenation pretreatment of impurities and the lightening reaction of part of the material, it enters the thermal high fraction to obtain two parts of gas and liquid, and the liquid enters the separator to obtain hydro...

Embodiment 3

[0041] The present embodiment adopts the residual oil and coal tar shown in Table 1, the ratio of the two is 30:70, the catalyst used is A, and the catalyst addition (in terms of Fe and Zn sum weight) is based on the total weight of coal tar and residual oil 1.0%, the auxiliary agent is sulfur powder, the amount of auxiliary agent added in the oil slurry, the molar ratio of sulfur to iron metal in the catalyst is 1.5. After the above materials are mixed, they are pumped into the preheating furnace, and the catalyst is vulcanized under the action of hydrogen, and the mixed material from the preheating furnace is mixed with part of the hydrogen into the slurry bed reactor, and demetallization is carried out under the action of hydrogen and catalyst. After the hydrogenation pretreatment of impurities and the lightening reaction of some materials, they enter the thermal high fraction to obtain two parts, gas and liquid, and the liquid enters the separator to obtain liquid oil (hydr...

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Abstract

The invention relates to a residual oil and coal tar total fraction hydrogenation method; residual oil, coal tar total fractions, a catalyst and auxiliary agents are mixed to prepare oil slurry; the oil slurry is preheated in the presence of hydrogen gas, then enters a slurry bed hydrogenation reactor and is subjected to hydrogenation processing and lightening reaction, and reaction products are separated to obtain gas, hydrogenated fraction oil and solid-containing tail oil; a part of the solid-containing tail oil is circulated back to the slurry bed reactor for reaction. Compared with the prior art, the method process has no need of pretreatment of the coal tar, has the advantages of simple process and high liquid yield, and provides a processing method used for improving economical efficiency for the low-added-value residual oil and coal tar.

Description

technical field [0001] The invention relates to a method for lightening and refining residual oil and coal tar whole fractions in the presence of hydrogen. Background technique [0002] In recent years, the world's oil resources have become increasingly scarce, and the problem of heavy and inferior oil resources has become more and more obvious. The quality of the corresponding residual oil is getting worse and worse, making it more difficult to use. However, with the rapid development of the global economy, society's demand for clean petroleum fuels is increasing day by day. Therefore, how to effectively utilize these residual oils and realize the production of light oil products as much as possible to meet their increasing demand is an important and difficult issue facing the current refining industry. [0003] On the other hand, with the rapid development of coal chemical industry, the proportion of unconventional resources such as coal tar is gradually increasing. Coal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/04C10G45/08C10G45/12
Inventor 王卫平吴治国王蕴王鹏飞崔龙鹏王树青
Owner CHINA PETROLEUM & CHEM CORP
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