Method of eliminating and reclaiming metal form petroleum

A metal removal technology, applied in the field of precious metals, can solve the problems of small profit margins, high operating costs, and difficult recycling of metals, and achieve the effects of low cost, high recovery rate, and simple recycling methods

Inactive Publication Date: 2007-08-15
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing method of removing metals from petroleum requires large investment, high operating costs, and difficult recovery, so that the profit margin for the recovery and reuse of metals after removal is very small.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Ni(P) and Ni(B) alloys can be easily prepared by known chemical deposition methods. The infiltration of P and B here can make Ni easy to form Ni grains during the deposition process. Ni crystal is a strong magnetic material. Use this magnetic material as adsorbent, add in the crude oil sample according to the mass ratio of the nanoparticles and the crude oil at 2% (the nickel content in the sample is 37 μg / g, the vanadium content is 250 μg / g), in a device with stirring, 90 Fully stir for 30 minutes at ℃ to make the magnetic particles fully adsorb the metal compounds in the crude oil, filter and separate the adsorbent, collect the crude oil after metal removal, and detect it with flame atomic absorption spectrophotometry. The porphyrin nickel removal rate can reach 80% % or more, the porphyrin vanadium removal rate can reach more than 75%. The adsorbent adsorbed with metal is washed with water 3 times the mass of the adsorbent, even if the adsorbed metal is desorbed fr...

Embodiment 2

[0018] Embodiment 2: Fe-Si magnetic material is made adsorbent

[0019] Fe powder (purity 99.9%, initial particle size-200 mesh) and Si powder (purity 99.9%, initial particle size-200 mesh) are used in a ratio of 75:25 in atomic percentage. The experiment used high-energy planetary ball mill, vacuum ball mill jar and stainless steel ball produced by Nanjing University Instrument Factory. High-speed ball milling was performed with a ball-to-material ratio of 15:1 and a rotational speed of 200 r / min, and argon was used as a protective gas. Ball mill for 48h-98h, and then put the ball-milled powder in a tubular high-temperature furnace for annealing heat treatment under a hydrogen protective atmosphere. A composite Fe-Si powder is obtained. Make adsorbent with this magnetic material, pack into two tower-type adsorption beds, adopt the operation technology of common two tower switching, crude oil (crude oil is the same as embodiment 1) flows through the bed layer of the first to...

Embodiment 3

[0020] Example 3: Alloy NdFeB magnetic material as adsorbent

[0021] Divide the composition into Nd 10.2 PR 3 Dy 0.5 Fe 80 Al 0.3 B 6The alloy is smelted in an induction furnace under an Ar atmosphere, and a rapid-quenching thick strip with a thickness of 200-300 μm is made by strip casting (Strip2casting) technology, wherein the melt temperature is 1200-1500 ° C, and the roll speed is 1 m / s. After absorbing hydrogen at room temperature, the thick tape is dehydrogenated in vacuum at 600°C, and is jet-milled to produce powder particles with an average particle size of about 5 μm. After being oriented and pre-pressed by a magnetic field (1.5T), it is put into a graphite mold for SPS sintering, and is prepared as High performance NdFeB permanent magnet material. Use the mass ratio of this magnetic material to crude oil to be 0.5%, fully stir at 90°C for 20 minutes, and adsorb metal compounds in the crude oil. The subsequent treatment steps are the same as in Example 1. ...

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Abstract

The invention discloses a method to strip and reclaim metal from earth oil, which comprises the following steps: using inorganic magnetic particle as adsorbent; touching with earth oil completely; absorbing metallic compound of earth oil with magnetic particle at 90-200 deg.c; collecting the earth oil after stripping; washing and desorbing the magnetic particle; stripping out of organic material water phase with metal; evaporating to dryness; getting oil residue with organometal; roasting at above 700 deg.c; getting mixture with several metallic oxide; sorting; deacidizing; getting each metal single material. This invention can strip and reclaim vanadium and nickel precious metal, which can make nickel metal reclaiming ratio reach above 80% and vanadium reach above 70%.

Description

technical field [0001] The present invention relates to a method for removing and recovering metals from petroleum, specifically a method for removing and recovering metals from petroleum by adsorption with an adsorbent, especially a method for removing porphyrin metal compounds and recovering precious metals such as nickel and vanadium , also belongs to the effective use of petroleum resources. Background technique [0002] Petroleum is the most important energy source in the world in this century. The main components of petroleum are hydrocarbons, and there are a small amount of metal components in it. Currently, 45 kinds of metal elements have been identified in petroleum, which exist in different forms. Among them, Na, Ca, Mg and other alkali metals or alkaline earth metals mostly exist in the form of inorganic salts or naphthenates, while nickel and vanadium mostly exist in the form of porphyrin compounds. In the process of petroleum processing, Na, Ca, Mg, etc. can be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/24B03C1/02
CPCY02P10/20
Inventor 陈标华黄崇品王亮
Owner BEIJING UNIV OF CHEM TECH
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