Unsaturated C5 fraction and hydrogenation method

An unsaturated, fractional technology, applied in chemical instruments and methods, through selective hydrorefining, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem that diolefins do not have hydrogenation selectivity, etc. Achieve the effect of improving anti-colloid ability, low coking rate and high hydrogenation activity

Active Publication Date: 2019-03-08
兰州金润宏成新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst 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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  • Unsaturated C5 fraction and hydrogenation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Preparation of silica-alumina composition 1

[0032] 1. Preparation of nickel-containing magnesium aluminate LaMgAl 11 o 19 The process is as follows:

[0033] Take 7.8 grams of basic magnesium carbonate, 25 grams of lanthanum carbonate and 70.5 grams of aluminum hydroxide, mix well, add deionized water to form a highly dispersed suspension, then add 8 grams of nickel nitrate, spray dry, and dry at 140 ° C for 5 hours. and placed in an air atmosphere at 1300° C. for 4 hours and then ball milled for 18 hours to obtain nickel-containing magnesium lanthanum aluminate powder. The nickel-containing magnesium-lanthanum aluminate powder is added with water, and the highly dispersed nickel-containing magnesium-lanthanum aluminate slurry is obtained after ultrasonic vibration.

[0034] 2. Preparation of silica-alumina composition

[0035] Take 150g of pseudo-boehmite and 24g of scallop powder, mix evenly, add dilute nitric acid, then add 26g of sodium polyacrylate nitric...

Embodiment 2

[0039] (1) Preparation of silica-alumina composition 2

[0040] The preparation of nickel-containing magnesium lanthanum aluminate is the same as in Example 1, the preparation of the silica-alumina composition is the same as in Example 1, and 68% of pseudo-boehmite is mixed evenly with squat powder, and the pore-enlarging agent 1 is sodium polyacid. The added amount accounts for 19% of the mass of the added alumina, and the added amount of the pore expander 2 chitosan accounts for 4% of the added mass of the alumina and silicon oxide. The silica-alumina composition contained 6.1 wt% of silica and 5.8 wt% of nickel-containing magnesium lanthanum aluminate.

[0041] (2) Preparation of catalyst

[0042] The preparation method of the catalyst is the same as in Example 1. The polyacrylic acid solution and the silica-alumina composition powder are mixed evenly in a volume ratio of 1.8:1. The composition of the catalyst is shown in Table 1.

Embodiment 3

[0044] (1) Preparation of silica-alumina composition 3

[0045] The preparation of nickel-containing magnesium lanthanum aluminate is the same as in Example 1, the preparation of the silica-alumina composition is the same as in Example 1, and 72% of pseudo-boehmite is mixed evenly with squat powder, and the pore-enlarging agent 1 is polyacrylate The added amount accounts for 21% of the mass of the added alumina, and the added amount of the pore-enlarging agent 2 methylcellulose accounts for 2.6% of the added mass of the alumina and silicon oxide. The silica-alumina composition contained 4.3 wt% silica and 5.9 wt% nickel-containing magnesium lanthanum aluminate.

[0046] (2) Preparation of catalyst

[0047] The preparation method of catalyst 3 was the same as that in Example 1. Sodium polyacrylate was added to dilute nitric acid and mixed evenly with the silica-alumina composition powder at a volume ratio of 1.5:1. The composition of the catalyst was shown in Table 1.

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Abstract

The invention relates to an unsaturated C5 fraction and hydrogenation method. According to the method, by the aid of a fixed bed reactor, a used catalyst is a nickel hydrogenation catalyst, and the catalyst is reduced by the aid of hydrogen or hydrogen-containing gas at the temperature of 350-500 DEG C. The catalyst comprises main active components and a silicon oxide-aluminum oxide composition, and the main active components include molybdenum, nickel, cobalt and potassium. Hydrogenation process conditions include that a reactor inlet temperature is 30-660 DEG C, reaction pressure is 1.5-6.0MPa, liquid volume per hour is 1.0-6.0h<-1>, and the volume ratio of hydrogen to oil is 100:400. According to the unsaturated C5 fraction and hydrogenation method, the used nickel-based saturated hydrogenation catalyst has high hydrogenation activity and the advantages that the catalyst is resistant to sulfur, water and colloid, and hydrogenation reaction can be performed at low temperature.

Description

technical field [0001] The present invention relates to an unsaturated C 5 Distillate hydrogenation method, industrial C 5 Alkynes and diolefins in the distillate are hydrogenated to corresponding alkanes. Background technique [0002] C 4 、C 5 Unsaturated hydrocarbons contain more diolefins. At a certain reaction temperature, in addition to their own polymerization, the diolefins will also react with other hydrocarbons to form colloidal precursors such as colloids. Moreover, olefins are easy to polymerize, and monoolefins are easy to hydrogenate and saturate. While hydrogenation removes diolefins in raw oil, it can avoid or reduce olefin polymerization reaction. [0003] Steam cracking to ethylene and refineries by-product a large amount of C 4 、C 5 Distillate, its yield and composition vary with the type of cracking raw material, cracking depth and cracking process. where C 4 、C 5 After the diolefins are separated from hydrocarbons and used as chemical raw materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/36B01J23/887B01J23/889
CPCB01J23/002B01J23/8872B01J23/8892B01J2523/00C10G45/36B01J2523/13B01J2523/31B01J2523/3706B01J2523/41B01J2523/68B01J2523/845B01J2523/847B01J2523/72B01J2523/24
Inventor 肖真勇
Owner 兰州金润宏成新材料科技有限公司
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