Saturation and hydrogenation method of C4 and C5 fraction through cracking by petroleum hydrocarbons

A C5 fraction and carbon cracking technology, which is applied in the field of saturated hydrogenation of C5 fraction and petroleum hydrocarbon cracking of C4, can solve the problem that diolefins do not have hydrogenation selectivity, etc., and achieve mild operating conditions, strong adaptability, The effect of mild reaction conditions

Active Publication Date: 2015-01-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst can be used for hydrofining of middle and low distillate oils. It can hydrogenate saturated monoolefins to the greatest extent while hydrodesulfurizing. It can meet the requirements of oil products with variable sulfur content and high space velocity, but it has no effect on diolefins. Hydrogenation selectivity

Method used

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  • Saturation and hydrogenation method of C4 and C5 fraction through cracking by petroleum hydrocarbons
  • Saturation and hydrogenation method of C4 and C5 fraction through cracking by petroleum hydrocarbons
  • Saturation and hydrogenation method of C4 and C5 fraction through cracking by petroleum hydrocarbons

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Dissolve 200kg of sodium carbonate and 38kg of ammonium bicarbonate in 1000L of water to make a precipitant; 230kg of nickel nitrate, 30kg of aluminum nitrate, 28kg of sodium metaaluminate, 15kg of magnesium nitrate, 9kg of zinc nitrate, 5kg of zirconium nitrate, and 7.5kg of ammonium molybdate 1. Dissolve 9.9kg of sodium stannate in 800L of water, heat to 55°C, add a precipitating agent, and then add 30kg of diatomaceous earth after all the precipitating agent is added. Continue heating to 90°C, adjust the pH value to 9 with potassium carbonate, and stir for 1 h. After filtration, the filter cake was washed 5 times with distilled water. The filter cake was dried, extruded into a cylindrical shape of Φ3×8 mm, and calcined at 350° C. for 4.5 hours to obtain catalyst 1.

Embodiment 2

[0051] Dissolve 200kg of sodium carbonate and 38kg of ammonium bicarbonate in 1000L of water to make a precipitant; 212kg of nickel nitrate, 30kg of aluminum nitrate, 28kg of sodium metaaluminate, 5kg of magnesium nitrate, 6.6kg of zirconium nitrate, 1.7kg of copper nitrate, and 16.8kg of molybdenum Dissolve ammonium nitrate, 3kg of lanthanum nitrate, and 15kg of sodium stannate in 800L of water, heat to 55°C, add a precipitant, and then add 30kg of diatomite after all the precipitant is added. Continue heating to 90°C, adjust the pH value to 8.6 with potassium carbonate, and stir for 1 h. After filtration, the filter cake was washed 5 times with distilled water. The filter cake was dried, extruded into a cylindrical shape of Φ3×8mm, and calcined at 400° C. for 4 hours to obtain catalyst 2.

Embodiment 3

[0065] Dissolve 200kg of sodium carbonate and 38kg of ammonium bicarbonate in 1000L of water to make a precipitant; 221kg of nickel nitrate, 30kg of aluminum nitrate, 28kg of sodium metaaluminate, 15kg of magnesium nitrate, 3.4kg of copper nitrate, 7.5kg of ammonium molybdate, and 6kg of nitric acid Lanthanum and 9.9kg of sodium stannate were dissolved in 800L of water, heated to 55°C, and a precipitating agent was added, and then 30kg of diatomaceous earth was added after all the precipitating agent was added. Continue heating to 90°C, adjust the pH value to 8.8 with potassium carbonate, and stir for 1 h. After filtration, the filter cake was washed 5 times with distilled water. The filter cake was dried, extruded into a cylindrical shape of Φ3×8 mm, and calcined at 350° C. for 4.5 hours to obtain catalyst 3.

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Abstract

The invention relates to a saturation and hydrogenation method of C4 and C5 fraction through cracking by petroleum hydrocarbons, a catalyst is a nickel-based hydrogenation catalyst, a hydrogenation technology condition is characterized in that the inlet temperature of a reactor is 30-50 DEG C, the reaction pressure is 1.0-4.0MPa, the liquid volume space velocity is 1.0-5.0h<-1>, the volume ratio of hydrogen to oil is 100 to 400, and the nickel-based hydrogenation catalyst is prepared by using a coprecipitation method. The nickel-based hydrogenation catalyst comprises a main active ingredient Ni, an assisted active ingredient Mg, Mo, Sn, X1 and X2. The catalyst has high hydrogenation activity, the hydrogenation reaction is carried out under low temperature, and the catalyst has characteristics of good heat stability, water resistance and coking resistance. The hydrogenation method can obtain especially excellent hydrogenation effect, and is suitable for saturation and hydrogenation of the C4 and C5 fraction through cracking by petroleum hydrocarbons.

Description

technical field [0001] The invention relates to a method for saturated hydrogenation of petroleum hydrocarbon cracking C4 and C5 fractions. The method is suitable for hydrogenating unsaturated hydrocarbon raw materials into corresponding saturated hydrocarbons, especially for cracking C4 and C5 fractions of petroleum hydrocarbons. Alkynes, diolefins, and monoolefins in the C5 fraction are hydrogenated to corresponding alkanes. Background technique [0002] A large amount of C is produced by steam cracking to ethylene 4 、C 5 Distillate, its yield and composition vary with the type of cracking raw material, cracking depth and cracking process. C 4 、C 5 After the diolefins are separated from hydrocarbons and used as chemical raw materials, the rest is used in the fields of alkylate oil, petroleum resin, etc. The excess can only be used as fuel, and the added value of the product is low. For raffinate C 4 and C 5 The distillate is subjected to saturated hydrogenation, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G49/04B01J23/887
Inventor 吴杰吕龙刚钱颖康宏敏颉伟郑云弟孙利民马好文向永生黄德华张慧王学丽
Owner PETROCHINA CO LTD
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