Hydrotreatment method of mixed C4 raw materials

A technology of hydrotreating and mixing C4, which is applied in chemical instruments and methods, hydrogenation hydrocarbon production, chemical/physical processes, etc. It can solve the problems of uneven mixing of crystal particles, difficulty in combining, and deterioration of catalyst strength, etc., and achieve performance Easy to adjust, simple process, high hydrogenation activity and selectivity effect

Active Publication Date: 2018-11-23
PETROCHINA CO LTD
View PDF12 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the additive metal compound is directly mixed with aluminum hydroxide dry rubber powder or alumina powder in the form of kneading. This method has problems such as uneven mixing of crystal particles and deterioration of catalyst strength. Not easy to combine to form a specific skeleton structure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hydrotreatment method of mixed C4 raw materials
  • Hydrotreatment method of mixed C4 raw materials
  • Hydrotreatment method of mixed C4 raw materials

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0051] Embodiment uses the preparation of catalyst 1~5:

[0052] Catalyst C1

[0053] Dilute 1L concentration to 50g Al 2 o 3 / L of aluminum sulfate solution and nickel nitrate solution are mixed evenly and loaded into a container at a high position, and the prepared concentration is 150g Al 2 o 3 / / 1 L of sodium metaaluminate solution is put into a container at a high position, and the two containers are connected with a peristaltic pump to control the flow rate and flow into a stainless steel container with 2L of bottom water with a stirrer and gas at the bottom of the tank, the reaction temperature 65°C, control the flow rate to adjust the pH value of the reaction system to 9, adjust the pH value of the slurry to 9.6 by adding ammonia water dropwise, age for 50 minutes after the reaction, filter and separate the mother liquor, and wash. Dry at 90°C for 3 hours and at 120°C for 2 hours to obtain nickel-containing pseudo-boehmite.

[0054] Weigh the prepared nickel-contai...

Embodiment 1

[0077] Put the catalyst C1 into a 45ml fixed-bed adiabatic reactor, and reduce it at 80°C for 8h under a hydrogen atmosphere. Using the hydrogenation raw materials in Table 2, the reaction inlet temperature is 40°C, the reaction pressure is 1.2MPa, and the liquid space velocity is 7.0h -1 1. The hydrogenation results of 100h operation under the condition of 2:1 molar ratio of hydrogen to butadiene are shown in Table 3.

[0078] Table 3 Composition of materials before and after reaction

[0079]

Embodiment 2

[0081] Load catalyst C2 into a 45ml fixed-bed adiabatic reactor, and reduce it at 120°C for 4h under a hydrogen atmosphere. Using the hydrogenation raw materials in Table 2, the reaction inlet temperature is 45°C, the reaction pressure is 1.4MPa, and the liquid space velocity is 8.0h -1 1. The hydrogenation results of 100h operation under the condition of 2.5:1 molar ratio of hydrogen to butadiene are shown in Table 4.

[0082] Material composition before and after table 4 reaction

[0083]

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention relates to a hydrotreatment method of refinery plant mixed C4 raw materials. A palladium-silver hydrogenation catalyst and a fixed bed reactor are used; the hydrogenation process conditions are as followings: the liquid volume airspeed is 2.0 to 10.0h<-1>; the inlet temperature of the reactor is 30 to 80 DEG C; the reaction pressure is 1.0 to 2.0 MPa; the mole ratio of hydrogen to butadiene is (1.1 to 3):1; the used palladium-silver hydrogenation catalyst uses nickel-containing aluminum oxide with specific crystal form as a carrier and palladium as an active ingredient; through being metered by using the catalyst weight as 100 percent, the palladium content (being metered by simple substances) is 0.05 to 0.5 weight percent; the nickel content (being metered by simple substances) is 1.0 to 4.0 weight percent; silver oxide accounts for 0.15 to 2.8 weight percent; alkali metal and/or alkaline-earth metal oxide accounts for 0.5 to 5.0 weight percent. Under the application method and process conditions, the catalyst has good butadiene hydrogenation activity and selectivity; the hydrogenation product can be used as raw materials for producing high-purity 1-butylene.

Description

technical field [0001] The invention relates to a method for hydrogenation treatment of mixed C4 raw materials, in particular to a method for hydrogenation treatment when unsaturated dienes are converted into alpha-olefins. Background technique [0002] High-purity 1-butene is a chemical product with high economic value, and it is also a scarce resource. It is mainly used as a comonomer for the production of linear low-density polyethylene. The cheap raw material for the production of 1-butene is the mixed C4 by-product of the catalytic cracking (FCC) unit and ethylene steam cracking unit of the refinery. The mixed C4 mainly contains butane, 1-butene, 2-butene and isobutene In addition to other components, it generally contains about 0.2 to 1.0% butadiene. Among them, butadiene is a harmful substance for the further utilization of olefins, which directly affects the effect of the downstream 1-butene polymerization process catalyst and product quality, so butadiene must be r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C07C5/05C07C11/08B01J23/89
CPCB01J23/002B01J23/8946B01J2523/00C07C5/05C07C11/08B01J2523/11B01J2523/18B01J2523/23B01J2523/13B01J2523/22B01J2523/25
Inventor 孙利民胡晓丽王斌彭蓉展学成马好文郑云弟钱颖梁顺琴潘曦竹
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap