Unlock instant, AI-driven research and patent intelligence for your innovation.

Specially-shaped aluminum oxide ethanol dehydration catalyst and preparation method thereof

A technology of ethanol dehydration and alumina, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., and can solve problems such as low catalyst activity, uneven catalyst loading, and large bed pressure drop

Inactive Publication Date: 2011-01-12
SHANGHAI RES INST OF PETROCHEMICAL TECH SINOPEC
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is the problems of uneven catalyst loading, large bed pressure drop and low catalyst activi

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
  • Specially-shaped aluminum oxide ethanol dehydration catalyst and preparation method thereof
  • Specially-shaped aluminum oxide ethanol dehydration catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Boehmite is mixed with alumina sol and Tianqing powder, and the weight ratio of each raw material is boehmite / alumina sol / Tianqing powder=1: 0.5: 0.1, peptized with 0.3 mol / liter of nitric acid, and the shape is Four-leaf clover-shaped, 4mm long, 1.1mm four-leaf circle diameter, dried at 120°C for 12 hours, and calcined at 550°C for 10 hours to obtain the formed catalyst for ethanol dehydration to ethylene. Al in the catalyst 2 o 3 The parts by weight are 67 parts.

Embodiment 2

[0021] By each step and condition of [Example 1], only pseudo-boehmite / silica sol / dry starch=1: 1: 0.1, with 0.3 mol / liter of citric acid peptization molding, shape is 5 tendons wheel-shaped, long 6.5mm, 3.6mm in diameter, dried at 150°C for 10 hours and fired at 650°C for 5 hours. Al in the catalyst 2 o 3 The parts by weight are 50 parts.

Embodiment 3

[0023] According to each step and condition of [Example 1], only pseudo-boehmite / silica sol / glycerin=1:2:0.1, the shape is clover-shaped, 5 mm long, and 1 mm in diameter of the three-leaf circle. Al in the catalyst 2 o 3 The parts by weight are 33 parts.

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

No PUM Login to View More

Abstract

The invention relates to a specially-shaped aluminum oxide ethanol dehydration catalyst and a preparation method thereof, and mainly aims to solve the problems of nonuniform filling of catalysts, big pressure drop of the bed and low activity of the catalysts caused by the use of cylindrical catalysts of different lengths in the prior art. The catalyst comprises the following components in part by weight: a, 10 to 90 parts of aluminum oxide; and b, 10 to 90 parts of bonding agent, wherein the problems can be better solved if the catalyst adopts at least one of clover shape, clover three-hole shape, cylinder middle-hole type, four-leaf clover shape, dumbbell shape, honeycomb shape, wheel shape, seven-hole ball shape, three-hole ball shape, ball shape or cross bore column shape. The catalyst of the invention can be applied to industrial production of preparing ethylene by dehydrating ethanol.

Description

technical field [0001] The invention relates to a special-shaped alumina ethanol dehydration catalyst and a preparation method thereof. Background technique [0002] As a basic organic chemical raw material and a leading product in the petrochemical industry, ethylene is known as the "mother of petrochemical industry". It is mainly used in the production of polyethylene, ethylene oxide / ethylene glycol, dichloroethane, styrene, acetic acid Chemicals such as ethylene. With the rapid development of ethylene derivative industries such as chemical industry, energy and materials, the demand for ethylene is increasing. At present, ethylene mainly comes from naphtha cracking. As petroleum resources are non-renewable and are gradually becoming exhausted, the use of renewable biomass resources to develop bioenergy and biochemical industries has become an inevitable trend of current and future economic development. Ethanol can be obtained by fermentation of plant starch or wood fibe...

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
IPC IPC(8): B01J21/04B01J35/02B01J35/04B01J35/08B01J35/10B01J37/04B01J37/08C07C11/04C07C1/24
CPCY02P20/52
Inventor 徐菁金照生李亚男杨为民周海春金萍
Owner SHANGHAI RES INST OF PETROCHEMICAL TECH SINOPEC