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Production method of low-sulfur marine fuel oil

A production method and fuel oil technology, which can be used in the treatment of hydrocarbon oil, petroleum industry, hydrotreating process, etc. It can solve the problems of reducing sediment content and not being able to directly produce low-sulfur marine fuel, so as to reduce polycondensation reaction and improve smoothness and mechanical strength, to solve the effect of loose combination

Active Publication Date: 2022-07-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent is to reduce the sediment content by adding aromatic hydrocarbons to the unconverted oil and then filter it. Unconverted oil cannot directly produce low-sulfur marine fuel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] (1) Preparation of asphaltene conversion catalyst

[0092] Mixing silica sol with a silicon oxide content of 30wt%, water and wheat starch with a particle size of 400 mesh and a molecular weight of 60,000, and uniformly mixing to obtain a coating liquid with a silicon oxide content of 80 g / L and a wheat starch content of 200 g / L;

[0093] Immerse the above coating liquid on the 0.3-0.8mm spherical alumina carrier substrate (specific surface 161 m 2 / g, pore volume 0.76mL / g, wear index 3.32%), dried at 120°C for 6h, after that, at a volumetric space velocity of 200h -1 The calcination was carried out under the nitrogen atmosphere of the present invention, the calcination temperature was 700 DEG C, and the calcination time was 3h to obtain the catalytic carrier material AS-1 of the present invention.

[0094] Weigh 23.78 g of phosphoric acid, add 800 mL of distilled water, then add 77.50 g of molybdenum oxide and 35.52 g of basic nickel carbonate in turn, heat and stir u...

Embodiment 2

[0103] (1) Preparation of asphaltene conversion catalyst

[0104] Others are the same as in Example 1, except that the silicon oxide content of the coating liquid is changed to 100g / L, and the wheat starch content is changed to 180g / L, to obtain catalytic carrier material AS-2 of the present invention and catalyst ASC-2 of the present invention, and its analysis results are shown in the table. 1.

[0105] (2) Preparation of hydrodesulfurization catalyst

[0106] Other conditions are the same as in Example 1, except that the silica sol is changed to water glass solution, the amount of the first metal salt is changed to 0.05L, the acidification pH is adjusted to 4.0, and the flow rate of the mixed solution A is 30mL / min. Deionized water was heated to 70°C to obtain a dry sample PO-2 of the silicon-alumina-metal composite material.

[0107] Take 500g of the dry sample of PO-2 silicon-alumina-metal composite material prepared, add 7.0g of wheat starch, 12.8g of acetic acid (85wt...

Embodiment 3

[0110] (1) Preparation of asphaltene conversion catalyst

[0111] Others are the same as in Example 1, except that the spherical alumina carrier matrix is ​​changed to (specific surface 148 m 2 / g, pore volume 0.76mL / g, wear index 3.56%), starch was changed to polyvinyl alcohol with an average molecular weight of 120,000, and the catalytic carrier material AS-3 of the present invention and the catalyst ASC-3 of the present invention were obtained. The analysis results are shown in Table 1 .

[0112] (2) Preparation of hydrodesulfurization catalyst

[0113] Other conditions are the same as in Example 1, except that the silica sol is changed to 40gSiO 2 / L, the acidification pH was adjusted to 3.5, the flow rate of the mixed solution A was adjusted to 15mL / min, 61g of ammonium carbonate was added to the reactor under stirring conditions to adjust the pH to 11.0, the treatment temperature was adjusted to 250°C, and the treatment pressure was adjusted to 0.4 MPa to obtain a dry...

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Abstract

The invention discloses a low-sulfur marine fuel oil production method which comprises the following steps: in the presence of hydrogen, a residual oil raw material enters a hydrogenation reaction zone and is sequentially contacted with an asphaltene conversion catalyst and a hydrodesulfurization catalyst for reaction; and separating the reaction effluent to obtain a fraction of which the temperature is greater than 350 DEG C, wherein the fraction is directly used as a low-sulfur marine fuel oil component or a blending component for producing the marine fuel oil. The production method provided by the invention adopts a catalyst grading scheme to process vacuum residue to produce the low-sulfur marine fuel oil. An asphaltene conversion catalyst and a high-activity hydrodesulfurization catalyst are matched for use, asphaltene is selectively converted, polycyclic aromatic hydrocarbon is subjected to fracture hydrogenation to ensure the stability of the system, and meanwhile, sulfur in the raw material is further removed, so that the requirement of low-sulfur ship combustion is met.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and relates to a method for producing marine fuel oil, in particular to a method for producing low-sulfur marine fuel oil by hydrogenation. Background technique [0002] The 70th session of the Marine Environment Protection Committee of the International Maritime Organization decided to implement the regulation that the sulfur content of marine fuel oil does not exceed 0.50%m / m from January 1, 2020. This means that low-sulfur fuel oil will gradually replace ordinary marine high-sulfur fuel oil as the mainstream fuel oil in the market. my country is a big consumer of fuel oil and the largest producer of low-sulfur fuel oil in the world. Low-cost low-sulfur fuel oil production technology is the goal of research. [0003] The fluidized bed residue hydrogenation technology has the characteristics of uniform temperature in the reactor, long operation period and flexible operation of the device. ...

Claims

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Application Information

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IPC IPC(8): C10G65/04
CPCC10G65/04C10G2300/4006C10G2300/4012C10G2300/4018C10G2300/70C10G2300/202C10G2300/206
Inventor 朱慧红刘铁斌金浩吕振辉杨光刘璐杨涛
Owner CHINA PETROLEUM & CHEM CORP
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