Co-impregnation solution and preparation method of catalyst obtained by hydrofining paraffin oil

A wax oil hydrogenation and catalyst technology, which is applied in the petroleum industry, hydrocarbon oil treatment, refining to remove heteroatoms, etc., can solve the problems of high production cost, poor water solubility, complex and cumbersome process, etc., to increase activity, The effect of high activity and reduced decrease in pore volume

Inactive Publication Date: 2017-04-05
新疆佳宇恒能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst needs to be heated to 70°C~120°C to dissolve the compound containing active metal elements and auxiliary elements when preparing the co-immersion solution, mainly because the molybdenum compound is molybdenum trioxide with poor water solubility, which will make W and Mo mainly exist in the co-immersion solution in the form of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take 2000g of macroporous aluminum hydroxide dry powder, add 100g of acetic acid, 100g of citric acid, 100g of turnip powder, 270g of silica sol and 1600ml of water, knead and extrude into strips; steam dry for 4 hours, and roast at 550°C for 3 hours to obtain the carrier;

[0030] At room temperature, add ammonium paramolybdate, ammonium metatungstate, nickel nitrate and orthophosphoric acid into deionized water, stir until completely dissolved, filter to obtain a clear and stable co-immersion solution, and dilute to 101ml with deionized water; The immersion solution contains MoO 3 13.95g / 100ml, WO 3 28.71g / 100ml, NiO 7.12g / 100ml, P 4.08g / 100ml;

[0031] Dry the carrier at 150°C for 2 hours, take 100g after cooling, and spray and impregnate it once with the co-impregnation solution at room temperature. The impregnated carrier is dried at 25°C for 1 day, and 40% of the free water is lost; then in a water vapor atmosphere at 110°C Drying for 2 hours, calcination at 500...

Embodiment 2

[0033] Take 2000g of macroporous aluminum hydroxide dry powder, add 120g of acetic acid, 80g of citric acid, 120g of turnip powder, 100g of silica sol and 1500ml of water, knead and extrude into strips. Steam drying for 3 hours, and calcination at 550°C for 3 hours to obtain the carrier;

[0034] At room temperature, add ammonium tetramolybdate and ammonium metatungstate to de-ammonia water, stir to dissolve, add nickel nitrate and orthophosphoric acid to deionized water, stir to dissolve, mix the two solutions; fully stir until completely dissolved, filter clear and stable The co-immersion solution, diluted to 100ml with deionized water, the co-immersion solution contains MoO 3 15.74g / 100ml, WO 3 28.9g / 100ml, NiO 7.89g / 100ml, P 4.51g / 100ml;

[0035]The prepared carrier was dried at 150°C for 2 hours, 100g was taken after cooling, and impregnated with the co-impregnation solution once at room temperature. The impregnated carrier was dried at 20°C for 1 day, and 35% of the fr...

Embodiment 3

[0037] Take 2000g of macroporous aluminum hydroxide dry powder, add 80g of acetic acid, 120g of citric acid, 80g of turnip powder, 70g of silica sol and 1500ml of water, knead and extrude to shape. Steam drying for 3_h, 550 DEG C roasting for 3h, obtained carrier;

[0038] At room temperature, add 40ml of ammonia water and deionized water to 46ml, add ammonium tetramolybdate and ammonium metatungstate, stir to dissolve. Add nickel nitrate and orthophosphoric acid to 24ml of deionized water, stir to dissolve, then mix the two solutions; stir until completely dissolved, filter to obtain a clear and stable co-immersion solution, and dilute to 100ml with deionized water. The co-impregnation solution contains MoO 3 12.4g / 100ml, WO 3 18.9g / 100ml, NiO 9.19g / 100ml, P 5.11g / 100ml;

[0039] Dry the carrier at 150°C for 1.5h, take 100g after cooling, and impregnate once saturated with the co-impregnation solution at room temperature. The impregnated carrier is dried at 20°C for 2 days...

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PUM

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Abstract

The invention discloses a co-impregnation solution and a preparation method of a catalyst obtained by hydrofining paraffin oil. The preparation method is characterized by comprising the following steps of preparing a catalyst carrier; preparing an aqueous solution of ammonium metatungstate, ammonium paramolybdate or ammonium tetramolybdate, nickel nitrate and orthophosphoric acid as the co-impregnation solution at the room temperature, wherein the co-impregnation solution comprises, by concentration, 16-30 g/100ml of WO<3>, 11-16 g/100ml of MoO<3>, 7-10 g/100ml of NiO and 3.5-5.5 g/100ml of P; impregnating the carrier obtained in step 1 one time with the obtained co-impregnation solution at the room temperature; firstly, drying the impregnated carrier at the room temperature, and then conducting heating and drying under water-vapor atmosphere, so that the catalyst is obtained, wherein calcinations is conducted while heating and drying are conducted. The catalyst prepared through the method is uniform in active component distribution, large in pore volume and specific surface area and high in desulfuration activity and denitrification activity.

Description

technical field [0001] The invention discloses a method for preparing a co-immersion solution and a catalyst for hydrorefining wax oil, belonging to the technical field of wax oil catalysts. Background technique [0002] Petroleum fractions contain impurities such as sulfur, nitrogen, oxygen, and metals. The existence of these impurities will not only affect the properties of the oil, but also release harmful gases that pollute the environment during use and reduce the activity and life of the catalyst. In the hydroprocessing process of petroleum hydrocarbons as raw materials, the raw materials are reacted with hydrogen under high temperature and high pressure conditions to remove harmful substances in the raw materials, such as organic sulfides, organic nitrogen compounds, and organometallic compounds. [0003] In the prior art, there is a distillate hydrorefining catalyst, which uses alumina or silicon-containing alumina as a carrier, W, Mo, and Ni as active components, an...

Claims

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Application Information

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IPC IPC(8): B01J27/19C10G45/08
CPCB01J27/19C10G45/08C10G2300/1037C10G2300/202
Inventor 张健曾佑富齐梅山
Owner 新疆佳宇恒能源科技有限公司
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