Method for removing nickel and vanadium in hydrocarbon raw material

A hydrocarbon raw material and nickel removal technology, which is applied in the fields of refined hydrocarbon oil, petroleum industry, and through electric/magnetic refining, etc., can solve the problem that the consumption of nickel and vanadium agent is small, the consumption of nickel and vanadium agent is large, and it cannot meet the requirements of industrial application and other issues to achieve the effect of reducing costs and reducing consumption

Active Publication Date: 2009-07-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a kind of nickel-removing vanadium agent that consumes less and can Method for removing nickel and vanadium in hydrocarbon raw materials meeting industrial application requirements

Method used

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  • Method for removing nickel and vanadium in hydrocarbon raw material
  • Method for removing nickel and vanadium in hydrocarbon raw material
  • Method for removing nickel and vanadium in hydrocarbon raw material

Examples

Experimental program
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Embodiment 1

[0031] This example is used to illustrate the method for removing nickel and vanadium in hydrocarbon raw materials provided by the present invention.

[0032] Hydrocarbon feedstock: crude oil.

[0033] Aqueous solution of demulsifier: aqueous solution of polyethylene glycol ether with a concentration of 1% by weight.

[0034] Aqueous solution of desalting agent: an aqueous solution of a composite desalting agent with a concentration of 0.5% by weight, and the composite desalting agent is composed of 70% by weight of acetic acid, 20% by weight of tartaric acid and 10% by weight of EDTA.

[0035] Aqueous solution of nickel and vanadium removal agent: a methanesulfonic acid aqueous solution with a concentration of 20% by weight.

[0036] (1) Mix 100 grams of crude oil (see Table 1 for metal content), 10 grams of desalting agent and 0.2 gram of demulsifier in a sealed mixer at 95 ° C for 1 minute, and then transfer them all to a sealed electric The first-level electric desalinat...

Embodiment 2

[0045] This example is used to illustrate the method for removing nickel and vanadium in hydrocarbon raw materials provided by the present invention.

[0046] Nickel and vanadium in the hydrocarbon feedstock were removed according to the method described in Example 1, except that the aqueous solution of the nickel and vanadium removal agent used was a HEDP aqueous solution with a concentration of 20% by weight. The experimental results are shown in Table 3 and Table 4 respectively.

[0047] table 3

[0048]

[0049] Table 4

[0050]

[0051] According to the results of Tables 3 and 4, it can be seen that the total concentration of nickel and vanadium in the aqueous solution separated by step (2) after recycling for 10 times reaches 1549 micrograms / gram, which is lower than 2000 micrograms / gram. Due to the low content of nickel and vanadium in the hydrocarbon feedstock, the consumption of the nickel-removing vanadium agent is small, and the initial amount of the nickel-...

Embodiment 3

[0053] This example is used to illustrate the method for removing nickel and vanadium in hydrocarbon raw materials provided by the present invention.

[0054] According to the method described in Example 1, nickel and vanadium in the hydrocarbon feedstock are removed, and the difference is that the hydrocarbon feedstock is a vacuum residue; the aqueous solution of the demulsifier has a concentration of 1% by weight. ) aqueous solution; the aqueous solution of the desalting agent is an aqueous solution of a composite desalting agent with a concentration of 2% by weight, and the composite desalting agent is composed of 30% by weight of citric acid and 70% by weight of acetic acid; The aqueous solution is an aqueous solution of trichloroacetic acid with a concentration of 30% by weight; see Table 5 and Table 6 for the analysis results of the metal content of the two-phase oil and water.

[0055] table 5

[0056]

[0057] Table 6

[0058]

[0059] According to the results ...

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Abstract

The invention relates to a method for removing nickel and vanadium in a hydrocarbon raw material, which comprises the following steps: (1) under the condition of electrostatic desalting, contacting the hydrocarbon raw material with an aqueous solution of a desalter to perform the first stage electrostatic desalting for reducing the total content of the metal in the hydrocarbon raw material to perform oil-water separation, and obtaining the hydrocarbon raw material with reduced metal content; (2) under the condition of the electrostatic desalting, sufficiently mixing the hydrocarbon raw material with reduced metal content obtained in the step (1) and an aqueous solution of a nickel-vanadium removing agent so as to perform the second stage electrostatic desalting, and then performing the oil-water separation so as to obtain an oil phase and a water phase containing the nickel-vanadium removing agent; and (3) using the water phase containing the nickel-vanadium removing agent and separated out in the step (2) as at least part of the aqueous solution of the nickel-vanadium removing agent to be recycled in the next second stage electrostatic desalting, and in the circulating process, controlling the total concentration of the nickel and the vanadium in the circulating water phase containing the nickel-vanadium removing agent and controlling the weight ratio of the total weight of the nickel-vanadium removing agent to the hydrocarbon raw material with reduced metal content. The method greatly reduces the consumption of the nickel-vanadium removing agent.

Description

technical field [0001] The invention relates to a method for removing nickel and vanadium from hydrocarbon feedstock. Background technique [0002] General petroleum contains metal compounds such as nickel and vanadium, iron, sodium, calcium, copper and arsenic, among which nickel and vanadium are more abundant, and nickel and vanadium mostly exist in the form of stable porphyrin and non-porphyrin organic complexes , which is difficult to remove by conventional methods. These metal compounds contained in petroleum have extremely adverse effects on catalysts used in petroleum processing, for example, often leading to catalyst poisoning, decreased activity, decreased selectivity, increased catalyst consumption, especially the negative impact of nickel and vanadium on catalysts particularly prominent. [0003] In the catalytic cracking process of petroleum processing, the above-mentioned metal complexes in the raw materials generally decompose at high temperature, and the met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G32/02C10G29/20
Inventor 李本高罗咏涛于丽汪燮卿谭丽
Owner CHINA PETROLEUM & CHEM CORP
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