Deactivator and preparation method thereof

A metal passivator and metal technology, applied in chemical instruments and methods, catalyst protection, physical/chemical process catalysts, etc., can solve the problems of low passivation efficiency and failure to use normally, achieve stable product quality, reduce hydrogen The effect of low yield and viscosity

Active Publication Date: 2017-03-08
JIANGSU KECHUANG PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Metal passivators in the prior art can usually only passivate one harmful metal, and the passivation efficiency is not high
At the same time, the existing LMP-3 and LMP-4A passivators crystallize at low temperature and cannot be used normally

Method used

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  • Deactivator and preparation method thereof
  • Deactivator and preparation method thereof
  • Deactivator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A metal deactivator, comprising the following raw materials in mass percentage: 18% of metal oxide, 27% of oxidizing agent, 20% of organic amine, and 35% of solvent; wherein, the metal oxide is antimony trioxide; The oxidizing agent is hydrogen peroxide with a concentration of 30% by mass; the organic amine is triethanolamine; and the solvent is deionized water.

[0026] Described metal deactivator is prepared according to the following method:

[0027] After mixing the organic amine and the solvent, add the metal oxide, raise the temperature to 90°C within 2 hours, then start to drop the oxidant at a rate of 250 kg / hour to make the oxidant and the metal oxide react, and control the reaction temperature at 90°C. At ~120°C, antimony trioxide is converted into pentavalent antimony under the action of hydrogen peroxide, and mixed with triethanolamine and water at the same time, and samples are taken to observe whether the powder is completely dissolved; after the reaction,...

Embodiment 2

[0032] The metal passivator prepared in Example 1 was applied to the No. 1 Refinery of Lanzhou Refinery and Chemical General Plant, and compared with the use effect of the LMP-3 passivator produced by Luoyang Petrochemical Engineering Company.

[0033] Table 2 Properties of raw oil

[0034] Densitykg / cm 3

886.8 Family Composition %(m) Distillation range °C alkanes 57.7 HK 155 Aromatics 29.7 10％ 324 colloid 12.6 50％ 452 Heavy metal mg / kg 70％ 529 Ni 3.96 Carbon residue%(m) 3.77 V 1.80 Pb 0.44

[0035] The LMP-3 type passivator after table 3 is used and the nature of embodiment 1 metal passivator

[0036]

[0037]

[0038] Table 4 uses the production statistics after LMP-3 type passivator and embodiment 1 metal passivator

[0039]

[0040] From catalyst analysis (table 3) and production statistics (table 4), it can be seen that under substantially consistent operating conditions, compare...

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PUM

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Abstract

The invention discloses a deactivator. The deactivator comprises the following raw materials by mass percentage: 10-20% of a metal oxide, 20-40% of an oxidizing agent, 5-20% of an organic amine, and 25-40% of a solvent. The deactivator comprises the following steps: mixing the organic amine and the solvent, adding the metal oxide, heating the materials to the temperature of 90 DEG C, dropping the oxidizing agent so that the oxidizing agent and metal oxide are subjected to a reaction, controlling the reaction temperature at 90-120 DEG C; after the reaction is complete, and filtering a reaction solution to remove impurity to obtain the deactivator. The deactivator enables reasonable complex formulation of the components, antimony oxide is converted to pentavalent antimony under effect of hydrogen peroxide, and is simultaneously mixed with the organic amine and water, catalyst poisoning problem can be solved, hydrogen yield is reduced, light oil yield is increased, and the deactivator is suitable for a catalytic cracking apparatus with high residual oil-blending percentage.

Description

technical field [0001] The invention relates to a metal passivator and a preparation method thereof. Background technique [0002] Heavy oil catalytic cracking is one of the main technologies for lightening heavy oil. With the continuous improvement of catalytic cracking technology, the raw material of catalytic cracking has also become heavier, and has developed from wax oil to blended refining residue or whole residue feed. The heavy metals in crude oil (such as nickel, vanadium, iron, sodium, etc.) are almost all concentrated in the residue fraction, and as the residue is brought into the catalytic device, they are continuously deposited on the catalyst during the reaction process, causing catalyst poisoning and deactivation And make the selectivity worse, increase the yield of hydrogen and coke, reduce the yield of gasoline and light oil, and seriously threaten the safety and smooth operation of the catalytic device. [0003] Metal passivators in the prior art can only...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J33/00
Inventor 顾齐欣孙建宜
Owner JIANGSU KECHUANG PETROCHEM
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