Method for producing propylene, ethene by using catalytic cracking olefin through fluid bed

A fluidized bed catalyst and catalytic cracking technology, which is applied in the field of ethylene and fluidized bed olefin catalytic cracking to produce propylene, can solve the problems of poor hydrothermal stability, catalyst coking and deactivation, etc., achieve good mechanical strength, improve reaction performance, and high The effect of reactivity and propylene selectivity

Active Publication Date: 2007-02-21
CHINA PETROLEUM & CHEM CORP +1
View PDF1 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is the problem of rapid catalyst coking and deactivation and poor hydrothermal stability in the existing olefin cracking fixed-bed reaction process, and a new fluid

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] [Example 1]

[0033] Step 1. 200 grams of NaZSM-5 molecular sieve (purchased, Shanghai Dye Chemical No. 7 Factory) with a molar ratio of silicon to aluminum of 200, roasted at 600°C for 4 hours under nitrogen flow, and then exchanged with 0.1M hydrochloric acid at 1 liter at 80°C. To four times, wash with deionized water until there is no chloride, and dry at 120°C for use. Combine 100 grams of the above molecular sieve and Ce 2 O 3 100 ml of 1.0 g of cerium nitrate solution is mixed uniformly, heated and evaporated to dryness under stirring, dried at 120°C for 10 hours, roasted at 550°C for 2 hours, and then added to a solution of 1.60 g of 85% phosphoric acid and 100 g of water. After mixing, it is evaporated to dryness, then dried at 120°C for 10 hours, calcined at 550°C for 2 hours, and finally crushed.

[0034] Step 2. Add 148 grams of kaolin (15% ignition reduction), add 250 grams of water and soak for 10 minutes, then beat for 10 minutes, add 625 grams of aluminum so...

Example

[0035] [Examples 2-11]

[0036] The same preparation process as in Example 1, only changing the ratio of different components, to obtain different microsphere catalysts.

[0037] Install 30 grams of catalyst in a Φ30 fluidized bed reactor to etherify C 4 It is the raw material to evaluate the performance of the catalyst under the conditions of space velocity WHSV 10 hours -1 and water / olefin weight ratio of 1,550 ℃. The results are shown in Table 1.

[0038]

Example

[0039] 【Examples 12-16】

[0040] Implement

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

This invention relates to a method for manufacturing propylene and ethylene by alkenes catalytic cracking in fluid bed reactor. The method comprises contacting alkenes with catalyst in a fluid bed reactor, and catalytically cracking to obtain propylene and ethylene. The catalyst uses ZSM molecular sieve 20-80 wt.% as the carrier, and rare earth oxides 0.01-6 wt.%, phosphorus oxides 0.01-6 wt.%, and binder 10-70 wt.% as the active components. The method solves the problems of quick coking inactivation and poor hydrothermal stability of the catalyst, low yield of propylene, etc., and can be used in propylene and ethylene manufacture by alkenes catalytic cracking.

Description

technical field [0001] The invention relates to a method for producing propylene and ethylene by fluidized bed olefin catalytic cracking, in particular to a method for producing propylene and ethylene by fluidized bed catalytic cracking of carbon four and above olefins. Background technique [0002] The demand for basic chemical raw materials such as propylene and ethylene continues to grow, while crude oil raw materials are deteriorating day by day, which has brought about increasingly prominent contradictions in the production of propylene and ethylene. On the other hand, mixed carbon four and above olefins and alkanes are by-products of ethylene plants, refinery FCC units, methanol to olefins, and gasoline units, and usually can only be used as low value-added products such as liquefied gas fuels. It is of great significance to use these olefins and alkanes raw materials for further deep processing to produce high value-added products propylene...

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): C07C11/06C07C11/04C07C4/06
Inventor 金文清滕加伟
Owner CHINA PETROLEUM & CHEM CORP
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