Method for hydrofining light petroleum distillate

A light petroleum, hydrorefining technology, applied in chemical instruments and methods, refining to remove heteroatoms, catalyst supports, etc., can solve the problems of small specific surface area of ​​oxides, low thermal stability, poor mechanical strength, etc.

Inactive Publication Date: 2011-06-29
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, studies have found that ZrO 2 、TiO 2 , SiO 2 Such oxides as carriers can change the acidity of hydrorefining catalysts, increase the dispersion of active components, and promote the reduction and vulcanization of metal components. However, due to the small specific surface area, low thermal stability and poor mechanical strength of these oxides, Limit its application as a catalyst carrier alone

Method used

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  • Method for hydrofining light petroleum distillate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Measure 22.0659g ZrOCl 2 ·8H 2 O was dissolved in 380ml of absolute ethanol to obtain solution A; measure 9.815ml of TiCl 4 Dissolve in 98.15ml absolute ethanol to obtain solution B.

[0021] 2. Titrate 57.7ml of silica sol into solution B to obtain solution C.

[0022] 3. Then titrate solution C into solution A, stir thoroughly for 1 hour, and make a uniform silicon-titanium-zirconium mixed solution D.

[0023] 4. Under constant stirring, use solution D to titrate 360mL polyethylene glycol-1000 ammonia solution for precipitation, monitor at any time during the second half of the titration, if necessary, add ammonia water dropwise to control the pH value at 9-10 Between, and then let stand for 24h.

[0024] 5. Suction filter and wash the precipitate until there is no Cl - The precipitate was washed twice with absolute ethanol.

[0025] 6. Dry the precipitate at 120° C. for 12 hours to obtain an oxide precursor. Then place the precursor in a muffle furnace, hea...

Embodiment 2

[0030] 1. Measure 3.01g ZrOCl 2 ·8H 2 O was dissolved in 52ml of absolute ethanol to obtain solution A; measure 29.60ml of TiCl 4 Dissolve in 296ml absolute ethanol to obtain solution B.

[0031] 2. Titrate 9.2ml of silica sol into solution B to obtain solution C, and stir for a certain period of time.

[0032] 3. Add solution C dropwise to solution A, stir well for 1 hour, and make a uniform silicon-titanium-zirconium mixed solution D.

[0033] 4. Under continuous stirring, use solution D to titrate 260mL polyethylene glycol-1000 ammonia solution for precipitation, monitor at any time during the second half of the titration, if necessary, add ammonia water dropwise to control the pH value at 9-10 Between, and then let stand for 24h.

[0034] 5. Suction filter and wash the precipitate until there is no Cl - Then, wash twice with absolute ethanol.

[0035] 6. Dry the washed precipitate at 120° C. for 12 hours to obtain a white powder oxide precursor. Then place the precu...

Embodiment 3

[0040] 1. Measure 22.36g ZrOCl 2 ·8H 2 O was dissolved in 385ml of absolute ethanol to obtain solution A; measure 4.41ml of TiCl 4 Dissolve in 44ml absolute ethanol to obtain solution B.

[0041] 2. Titrate 15.3ml of silica sol into solution B to obtain solution C.

[0042] 3. Then titrate solution C into solution A, stir thoroughly for 1 hour, and make a uniform silicon-titanium-zirconium mixed solution D.

[0043] 4. Under constant stirring, use solution D to titrate 300mL polyethylene glycol-1000 ammonia solution for precipitation, monitor at any time during the second half of the titration, if necessary, add ammonia water dropwise to control the pH value at 9-10 Between, and then let stand for 24h.

[0044] 5. Suction filter and wash the precipitate until there is no Cl - Then, wash twice with absolute ethanol.

[0045] 6. Dry the precipitate at 120° C. for 12 hours to obtain a white powder oxide precursor. Then place the precursor in a muffle furnace, heat up to 50...

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Abstract

The invention relates to a method for hydrofining light petroleum distillate, which comprises the following steps: treating light petroleum distillate on a fixed bed reactor by using MoP / SiO2-TiO2-ZrO2 as a catalyst; weighing TiCl4 or titanium nitrate or titanium sulfate, silicasol or ethyl orthosilicate, and ZrOCl2.8H2O, wherein in the ternary composite oxides SiO2-TiO2-ZrO2, the mol ratio of Si is 0.163-0.684, the mol ratio of Ti is 0.179-0.809, and the mol ratio of Zr is 0.028-0.589; preparing a mesoporous SiO2-TiO2-ZrO2 nano material by a coprecipitation method, wherein the content of the loaded active component MoP accounts for 20% of the total weight of the catalyst; and regulating the pore structure, acidity and surface properties of the catalyst carrier to obtain the mesoporous substrate material by changing the ratios of Si, Ti and Zr, thereby regulating the properties of the catalyst. The invention is suitable for hydrogenation catalysis of light distillate.

Description

Technical field: [0001] The invention relates to a method for catalytic hydrotreating of light petroleum distillate oil. Especially involving a MoP / SiO 2 -TiO 2 -ZrO 2 A method for catalytic hydrotreating of light petroleum distillate oil as a catalyst. Background technique: [0002] The contradiction between strict environmental protection regulations on low-sulfur and low-nitrogen fuels and the increasing heteroatom content of crude oil makes the production of clean oil products have important strategic significance for the sustainable development of economy and society. Traditional metal sulfide hydrorefining catalysts can no longer meet people's increasingly stringent requirements on the sulfur and nitrogen content of oil products. Improving traditional catalysts, developing more efficient catalysts, and realizing deep hydrorefining of oil products are effective ways to produce clean fuels and fundamentally solve the problem of automobile emission pollution. In orde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/04B01J27/19B01J32/00B01J21/08
Inventor 臧树良兰玲丁保宏王海彦纪晓飞鞠雅娜钟海军孙洪磊
Owner PETROCHINA CO LTD
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