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Hydrotreatment method of acid-containing crude oil

A technology for hydroprocessing and crude oil, which is applied in the fields of hydroprocessing process, hydrocarbon oil treatment, petroleum industry, etc. It can solve the problems of catalyst back-mixing, cumbersome loading and unloading of different types, etc., and achieve high hydrogenation activity, long operation period of the device, Effect of good bed thermal stability

Active Publication Date: 2019-06-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the present invention can apply the single type of catalyst to the upflow reactor, which overcomes the problems of many types of catalysts in the current upflow reactor, cumbersome loading and unloading, and back-mixing of different types of catalysts.

Method used

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  • Hydrotreatment method of acid-containing crude oil

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Take by weighing 400 g of water glass with a silicon oxide content of 30 wt % and add it to the beaker, start the stirring device, slowly add 150 g of nitric acid solution with a mass concentration of 62% in the beaker, then add 42.9 g of nickel nitrate, stir and dissolve the water glass solution in the beaker The pH value is 2.0, then add 385.3g pseudo-boehmite (the properties are as follows: pore volume 1.05mL / g, specific surface area is 306m 2 / g, dry basis is 70wt%), after stirring evenly, add 35g of curing agent urea, after the urea is completely dissolved, add deionized water, so that the material in the beaker is a paste with certain fluidity, and silicon dioxide and oxide The solids content is 33% based on aluminum.

[0060] The above paste mass is pressed into two identical hemispheres with spherical cavities. Wherein, a guide mold is placed in a hemisphere, and the guide mold is made of wood. The structure of the guided mode is that there is a cylinder in th...

Embodiment 2

[0065] The preparation process is as in Example 1, except that the solid content of silica and alumina is 35%, and the mold is replaced, the diameter of the cavity and cylinder is increased, and the prepared catalyst carrier B and catalyst B C , whose properties are shown in Table 1. Wherein, the outer diameter of the obtained catalyst carrier B is about 9.5 mm, the diameter of the middle through hole is about 3.0 mm, and the diameter of the side through hole is about 1.6 mm.

Embodiment 3

[0067] The preparation process is as in Example 1, except that nickel nitrate is not added, the prepared catalyst carrier C and catalyst C C , whose properties are shown in Table 1. Wherein, the outer diameter of the obtained catalyst carrier C is about 7.0 mm, the diameter of the middle through hole is about 1.9 mm, and the diameter of the side through hole is about 1.3 mm.

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Abstract

The invention discloses a hydrotreatment method of acid-containing crude oil. The method includes at least one up-flow hydrogenation reactor, which is internally filled with at least one hydrotreatingcatalyst. The carrier of the hydrotreating catalyst is a sphere with three-dimensional through-channels, the carrier has seven through-holes including middle through-holes and side through-holes, wherein the outer diameter of the sphere is 6.0-10.0 mm, the diameter of the middle through-holes is 25%-40% of the outer diameter of the sphere, and the diameter of the side through-holes is 10%-20% ofthe outer diameter of the sphere. The method provided by the invention adopts the specific catalyst, which has good hydrogenation deacidification performance, demetalization and metal accommodation capacity desulfurization, residual carbon and asphaltene conversion capacity, and the device operation period is long. Moreover, the method provided by the invention overcomes the problems of large catalyst variety, tedious loading and unloading, backmixing of different catalysts and the like in current up-flow reactors.

Description

technical field [0001] The invention relates to a method for hydrogenation treatment of acid-containing crude oil, in particular to a method for treating acid-containing crude oil by adopting an upflow hydrogenation process technology. Background technique [0002] Petroleum usually contains acid compounds, mainly in the form of naphthenic acid. The concentration or amount of acid in petroleum is expressed using the total acid number. The total acid number (TAN) refers to the number of milligrams of potassium hydroxide (KOH) required to neutralize all acidic components of 1 gram of crude oil or petroleum fractions, and the unit is mg KOH / g. [0003] In the process of petroleum refining, naphthenic acid in petroleum can directly react with iron, causing corrosion of refining equipment such as heating furnace tubes; it can also react with the protective film FeS on refining equipment, exposing new surfaces of metal equipment, subject to new corrosion. At present, ordinary r...

Claims

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Application Information

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IPC IPC(8): C10G45/08C10G65/04C10G67/02C10G67/14
Inventor 耿新国刘铁斌
Owner CHINA PETROLEUM & CHEM CORP
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