Catalyst for deep desulfuration and octane number increase for gasoline and preparation and application methods thereof

A technology of deep desulfurization and application methods, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of short reaction cycle, difficult to achieve sulfur content, catalyst carbon deposition and deactivation, etc., and achieve aromatic hydrocarbons. The effect of increasing the content

Active Publication Date: 2012-02-08
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF9 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The advantage of reactive adsorption desulfurization is that it can achieve ultra-deep desulfurization, and the sulfur content of the product can be reduced to below 10 μg / g. The problem is that the reaction must be carried out under hydrogenation conditions, and it is difficult to avoid the loss of octane number caused by olefin hydrogenation saturation. In addition, the purpose of aromatization modification cannot be achieved for straight-chain alkanes, olefins, and cycloalkanes, and the adsorption desulfurizer needs to be frequently regenerated; the advantage of the aromatization process is that it can make gasoline with a lower octane Alkanes and olefins are transformed into aromatics with high octane number, so as to achieve the purpose of increasing the octane number of product gasoline. The existing problems are that the catalyst is deactivated by carbon deposition and the reaction cycle is short. The rate is less than 50%, and the sulfur content in the product is difficult to meet the requirements as a blended gasoline component

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
  • Catalyst for deep desulfuration and octane number increase for gasoline and preparation and application methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021]Embodiment 1, this invention is used for the catalyst of deep desulfurization of gasoline and raising octane number, namely the composition of the functional catalyst of coupling reaction adsorption desulfurization reaction and aromatization reaction is Ni-M / ZnO-ZSM-5, wherein M= One of Pb and Co, add a little alumina dry glue as a binder during the catalyst molding process. In the composition of the catalyst, the content of ZSM-5 is 25-40% (wt), the content of ZnO is 30-50% (wt), the content of Ni is 1-10% (wt), and the content of alumina dry glue is 10-15 % (wt), the balance is M. In addition, the molecular sieve ZSM-5 in the functional catalyst of the coupling reaction adsorption desulfurization reaction and aromatization reaction is a step-pore molecular sieve with micropores-mesopores-macropores. obtained through solid-phase crystallization transformation.

Embodiment 2

[0022] Embodiment 2, the method embodiment of preparing catalyst of the present invention is as follows:

[0023] Step 1: Weigh 200 grams of dried diatomaceous earth in a beaker, and first supplement it with aluminum. The specific process is to add 51.64 grams of NaAlO 2 , 4.348 grams of template agent triisopropylammonium hydroxide and 21.74 grams of sodium hydroxide were dissolved in 1000 milliliters of distilled water to prepare a solution. Stir and mix the diatomite with the solution evenly, dry at 80°C to obtain modified diatomite; then place the obtained modified diatomite in a crystallization tank, and crystallize at 170°C for 24 hours. The product after exiting the kettle was centrifuged and washed several times until the supernatant was neutral, then filtered and dried to obtain the raw molecular sieve powder, which was exchanged with ammonium nitrate according to the conventional method to obtain the hydrogen-form ZSM-5. The analysis results show that the pore struc...

Embodiment 3

[0026] Example 3, based on the premise of step 1 and step 2 in Example 2, accurately weigh 7 grams of nickel nitrate and 4 grams of lead nitrate and dissolve them in 30 ml of aqueous solution to prepare an impregnation solution, and use the impregnation method to prepare the impregnation solution. Liquid impregnated onto 40 grams of nano-zinc oxide synthesized in step two, then added 35 grams of ZSM-5 molecular sieve in step one, 15 grams of alumina dry glue and a small amount of 1% nitric acid, mixed evenly, extruded, dried and roasted After that, catalyst 2 (Ni-Pb / ZnO-ZSM-5) was obtained.

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
crystal sizeaaaaaaaaaa
macroporeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a catalyst for deep desulfuration and octane number increase for gasoline and preparation and application methods thereof. The functional catalyst comprises NiM/ZnO-ZSM-5. The preparation method comprises the steps of: firstly, synthesizing nanometer zinc oxide with high specific surface by using a low-temperature solid-phase method, then respectively steeping nickel and auxiliary metal, in the form of ions, onto the surface of the zinc oxide by using a steeping method, drying, roasting, and reducing in hydrogen to obtain a nanometer composite of the nickel, the auxiliary metal and the zinc oxide, wherein the nickel and the auxiliary metal are bonded in an alloy manner and uniformly disperse on crystalline phases of the zinc oxide. The catalyst has the reaction conditions that the reaction temperature is 350-450 DEG C, the pressure is 0.5-1.6MPa, the hydrogen-oil volume ratio is 100-300 and the air speed is 2<-10>h<-1>. By using the catalyst disclosed by the invention to treat straight-run gasoline, the deep desulfuration and the aromatization of alkane and olefin are performed at the same time, so that the octane number of a product gasoline is obviously increased.

Description

technical field [0001] The invention belongs to the method for converting sulfur-containing straight-run gasoline into a blending component of clean fuel with ultra-low sulfur content in the field of deep processing of petroleum products. Specifically, it is a catalyst for deep desulfurization of gasoline and raising octane number and its preparation and application method. Background technique [0002] With the development of the automobile industry and the improvement of environmental protection requirements, the popularization of domestic unleaded gasoline is accelerating, and low-octane straight-run gasoline is gradually eliminated. At the same time, due to the low olefin content of straight-run gasoline, increasing the octane number of straight-run gasoline Promote gasoline olefins to meet standards. The main device to increase the octane number of straight-run gasoline is catalytic reforming, and the reformer requires a large investment and is not suitable for sma...

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): B01J29/46C10G49/08
Inventor 柳云骐张珂赵恩宏田双柴永明刘晨光
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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