Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Nickel sulfide series hydrogenation catalyst and pyrolysis gasoline hydrotreatment method

A hydrogenation catalyst, nickel sulfide-based technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, hydrocarbon oil treatment products, etc., can solve catalyst surface coking, nitrogen content, diolefins High impurity content, device shutdown and other problems, achieve good activity and stability, inhibit hydrogenation saturation of aromatics, and controllable acidity

Active Publication Date: 2021-02-09
CNOOC TIANJIN CHEM RES & DESIGN INST +2
View PDF13 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the nitrogen content and diolefin impurity content in catalytic cracking gasoline are significantly high. At a higher reaction temperature, polymerization and coking are prone to occur on the surface of the catalyst with strong acidity, resulting in the forced shutdown of the device.

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
  • Nickel sulfide series hydrogenation catalyst and pyrolysis gasoline hydrotreatment method
  • Nickel sulfide series hydrogenation catalyst and pyrolysis gasoline hydrotreatment method
  • Nickel sulfide series hydrogenation catalyst and pyrolysis gasoline hydrotreatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1 Preparation of one-stage nickel sulfide hydrogenation catalyst

[0023] Measured nickel nitrate, copper nitrate, sodium molybdate, magnesium nitrate, aluminum sulfate and aminotriacetic acid are dissolved to prepare metal salt solution I, and sodium carbonate and thiourea are dissolved to prepare solution II. Add 10L deionized water into a 100L reactor, adjust the stirring speed to 50 rpm, heat to 70°C, add solution I and solution II into the reactor in parallel, control the pH at 6-8, and control the feeding time at 1 hour , and then continue to react for 1 hour, then seal the reactor and carry out hydrothermal in-situ vulcanization for 2.5 hours. After the reaction materials were washed and filtered, the filter cake was directly extruded into strips and cut into balls, dried at 120°C for 6 hours under a nitrogen protective atmosphere, and calcined at 380°C for 3 hours to obtain a finished nickel sulfide hydrogenation catalyst, marked as C-I-X. The cataly...

Embodiment 2

[0024] Embodiment 2 Preparation of two-stage nickel sulfide hydrogenation catalyst

[0025] The preparation steps of the two-stage nickel sulfide-based hydrogenation catalyst are the same as in Example 1, and are marked as C-II-X. The catalyst is a toothed spherical particle with a particle size of 2.0-2.5 mm, and its composition and physical properties are shown in Table 1.

Embodiment 3

[0028] The hydrogenation activity evaluation of embodiment 3 catalyst

[0029] Catalysts were evaluated for pyrolysis gasoline hydrotreating activity on a 100ml hydrogenation reactor. The hydrogenation reactor used microporous dispersed internals, and hydrogen gas entered the pyrolysis gasoline stream after passing through the microporous dispersed internals, and then contacted with the catalyst. The raw material oil for evaluation is catalytic cracking gasoline produced by industrial equipment, and its density is 0.822g / cm 3 , the sulfur content is 528μg / g, the nitrogen content is 66μg / g, the bromine value is 26gBr / 100g, the diene value is 4.3gI / 100g, the olefin content is 15.6V%, the aromatic hydrocarbon is 75.8w%, and the distillation range is 43-188°C.

[0030] Fill the one-stage nickel sulfide-based hydrogenation catalyst A and the second-stage nickel sulfide-based hydrogenation catalyst B into two hydrogenation reactors connected in series respectively. The catalyst load...

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 discloses a nickel sulfideseries hydrogenation catalyst and a pyrolysis gasoline hydrotreatment method. The nickel sulfide series hydrogenation catalyst takes nickel as a main active metal, copper and / or molybdenum as an auxiliary active metal and a magnesium-aluminum composite oxide as a dispersion medium, and comprises a first-stage nickel sulfide series hydrogenation catalyst anda second-stage nickel sulfide series hydrogenation catalyst. The method disclosed by the invention comprises the following steps: firstly, respectively loading a first-stage nickel sulfide series hydrogenation catalyst and a second-stage nickel sulfide series hydrogenation catalyst into two fixed bed hydrogenation reactors which are connected in series and are internally provided with microporousdispersion internal components, introducing nitrogen to replace air in the reactors and pipelines, then mixing preheated hydrogenated naphtha with hydrogen, introducing the mixture into the fixed bedhydrogenation reactors, meanwhile, after the temperature is raised to reaction conditions, switching pyrolysis gasoline for hydrotreatment reaction. By adopting the catalyst and the method, high-sulfur high-olefin inferior catalytically cracked gasoline can be directly introduced for treatment, the operation is simple, the reaction conditions are mild, the activity and the stability are good, andthe technological process is green, safe and environment-friendly.

Description

technical field [0001] The invention relates to a hydrogenation catalyst and a hydrogenation treatment method. Specifically, it relates to a nickel sulfide-based hydrogenation catalyst and a method for advanced hydrogenation treatment of pyrolysis gasoline. Background technique [0002] The catalytic cracking process is a refining technology developed in recent years to produce more low-carbon olefins. Catalytic cracking gasoline is a by-product of the catalytic cracking process. It has a high octane number and is a good high-octane gasoline blending component. It can also be used as a raw material for the production of BTX light aromatics. However, because it contains some unstable compounds, mainly diolefins and sulfur nitrogen compounds, the oxidation stability is very poor, and it cannot meet the requirements of gasoline blending components or aromatics extraction raw materials. Therefore, after pyrolysis gasoline leaves the unit, it must undergo hydrotreating to remov...

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): B01J27/051B01J35/08B01J35/10B01J37/10B01J37/20B01J37/08C10G45/08
CPCB01J27/0515B01J23/002B01J37/10B01J37/20B01J37/088C10G45/08C10G2300/104C10G2300/1044C10G2300/202C10G2400/02B01J35/51B01J35/615B01J35/635B01J35/633
Inventor 张景成张国辉宋国良张玉婷张尚强刘伟肖寒朱金剑许岩于海斌孙彦民赵培江彭雪峰黄敬远冯晴杨涛史开洪陈永生隋芝宇孟广莹孙春晖
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com