Method for hydrotreating heavy hydrocarbon

A technology for hydrotreating and heavy hydrocarbons, which is applied in the fields of hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc., and can solve problems such as shutdown of residual oil hydrogenation unit, increase in temperature rise, and increase in pressure drop

Inactive Publication Date: 2011-01-12
FUSHUN RES INST OF PETROLEUM & PETROCHEMICALS SINOPEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The above process only considers the conversion of oil slurry and heavy cycle oil into light oil products, and the lightness of residue oil that can be treated by the residual oil hydrotreating unit can be improved by using catalytic cracking cycle oil to increase the yield of light oil. Profit, without considering the impact on the residue hydrogenation reaction environment, especially the impact of the pre-reactor demetallization

Method used

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  • Method for hydrotreating heavy hydrocarbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The pre-hydrogenation reaction was carried out in a small fixed-bed reactor, and the test was carried out on a small-scale riser catalytic cracking unit equipped with a pilot-scale upflow and fixed-bed residual oil hydrogenation unit.

[0034] prehydrogenation reaction

[0035] In the pre-hydrogenation reactor, the catalyst used in this test is the fixed-bed residue hydrogenation protection agent and demetallization catalyst produced by Sinopec Catalyst Company. Protective agents are CEN-2, CEN-4, FZC-16; demetallization catalysts are CEN-5, CEN-6. The loading ratio between the catalysts is:

[0036] CEN-2:FZC-16:CEN-4:CEN-5:CEN-6=1:1.25:1.25:5:1.5 (V / V).

[0037] The pre-hydrogenation raw material A used in this test is prepared by blending catalytic cracking oil slurry and circulating oil at a weight ratio of 2:8, and its properties are shown in Table 1. Take a certain amount of raw material A and mix it with hydrogen and enter it into the pre-hydrogenation reactor...

Embodiment 2

[0055] Using the same catalyst loading and test conditions as in Example 1, the pre-hydrogenation raw material is a mixed oil of catalytic cracking oil slurry, heavy cycle oil and coker wax oil in a weight ratio of 2:4:4, and its properties are shown in Table 6. The quality of the prehydrogenation raw material B is the same as in Example 1, and after being mixed with hydrogen, it enters the prehydrogenation reactor for reaction, and the reaction conditions are the same as in Example 1. The reaction temperature is 380°C, the total reaction pressure is 14.0MPa, and the volume space velocity: 1.0h -1 , hydrogen oil specific volume (V / V) 500. Impurities such as sulfur and nitrogen were removed, and hydrogenation saturation reaction was carried out to obtain hydrogenated refined oil B. The properties are shown in Table 7.

[0056] Table 6 Main Properties of Prehydrogenation Raw Material B

[0057] project

CCR, wt%

4.3

S, wt%

2.13

N, μg / ...

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Abstract

The invention discloses a method for hydrotreating heavy hydrocarbon. A hydrotreatment process comprises a pre-hydrogenation reaction zone, an up-flow hydrogenation reaction zone and a fixed bed-trickle bed reaction zone. The method comprise the following steps that: catalytic cracking slurry oil and/or catalytic cracking heavy cycle oil pass/passes through the pre-hydrogenation reaction zone; the pre-hydrogenation reaction zone adopts a fixed bed-trickle bed operation mode; both the reaction effluent of the pre-hydrogenation reaction zone and a residual oil raw material are jointly introduced into the up-flow hydrogenation reaction zone and the fixed bed-trickle bed reaction zone in turn; and the final reaction effluent is separated. The method of directly taking the catalytic cracking residual oil, the catalytic cracking heavy cycle oil and the like as fluxing oil of the residual oil raw material is changed, and the catalytic cracking residual oil and the catalytic cracking heavy cycle oil are pretreated to retard the coking of a catalyst and effectively prevent the generation of a bed layer hot point, so that stable operation of an up-flow reactor is guaranteed, the service life of the catalyst is prolonged, simultaneously the product quality is improved.

Description

technical field [0001] The present invention relates to hydrocarbon hydrogenation treatment technology, in particular, relates to a process of joint hydrogenation treatment of different heavy hydrocarbon raw materials. Background technique [0002] As crude oil becomes heavier and worse, more and more heavy and residual oils need to be processed. The processing of heavy and residual oil is not only to crack it into low-boiling products, such as naphtha, middle distillate and vacuum gas oil, but also to increase their hydrogen-carbon ratio, which requires decarbonization or Hydrogenation method to achieve. The decarbonization process includes coking, solvent deasphalting, heavy oil catalytic cracking, etc.; hydrogenation includes hydrocracking, hydrofining, etc. The hydrogenation method can not only hydrogenate the residual oil, improve the yield of liquid products, but also remove heteroatoms, and the product quality is good. However, the hydrogenation method is a catalyt...

Claims

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Application Information

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IPC IPC(8): C10G65/08
Inventor 刘铁斌耿新国吴锐李洪广翁延博蒋立敬韩照明
Owner FUSHUN RES INST OF PETROLEUM & PETROCHEMICALS SINOPEC CORP
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