Bio-based olefin oligomerization with chabazite catalysts

A catalyst, chabazite technology, applied in the direction of catalyst regeneration/reactivation, catalyst, molecular sieve catalyst, etc., can solve the problems of poor cold flow characteristics, decreased fluidity, filter blockage, etc.

Pending Publication Date: 2022-03-18
吉沃公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the cold flow properties of long-chain fatty esters from seed oils are so poor for diesel and aero engines that their use even at levels as low as 5% by weight can cause serious operational problems
Precipitation and crystallization of fatty paraffins in cold conditions can lead to loss of fluidity and filter clogging problems

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
  • Bio-based olefin oligomerization with chabazite catalysts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Example 1: No Oxygenates and No Recycle Feed

[0065] Catalyst: Clariant TiAPSO-34, total WHSV=2; reactor top temperature 180-185°C; P(psig)=250; 2.9g Client TiAPSO-34 (granular particles)+glass beads; mass ratio=97.4%; Feed: 88% iC4, 6% cis-2-butene, 6% trans-2-butene.

[0066] As shown in Table 1 below, C 8 The percentage of oligomers is about 40%, C 12 The percentage of oligomers is about 50%. In addition, C 8 And the percentage of higher carbon chain (C8+) oligomers is about 95%. C 8 relative C 12 and larger oligomers with a selectivity of 0.69:1, and C 8 -C 24 The yield of hydrocarbons is greater than 95%. C 8 Hydrocarbon yield greater than 39%, C 12 The yield of hydrocarbons was greater than 49%.

[0067] Table 1: Reaction oligomer product distribution:

[0068] ％C4 %C5-C7 ％C8 %C9-C11 ％C12 %C13-C15 ％C16 ％C20 ％C24 3.96 0.42 39.04 0.35 49.26 0.12 6.43 0.41 0.01

Embodiment 2

[0069] Example 2: Presence of oxygenates and recycled feed

[0070] Catalyst: Clariant TiAPSO-34, total WHSV=3.2, recycle feed: the mass ratio of fresh feed is 3: 1; Reactor top product concentration 180-185 ℃, P (psig)=250; 2.9g Clariant TiAPSO-34 ( Granular particles) + glass microspheres; mass ratio = 97.0%; oxygenates in recycled feed: 200ppm water, 6070ppm (isobutanol and tert-butanol); feed: 88% iC4, 6% cis-2- Butene, 6% trans-2-butene.

[0071] Table 2 illustrates the distribution of carbon oligomers where the feed stream contains oxygenates such as alcohols and water and about 25% of the feed stream contains recycle feed. The recycle feed contains about 37% C 8 oligomers and about 47% C 12 Oligomer. In the recycle feed C 8 The percentage of + oligomers was greater than 92%, lower than the overall yield in Example 1. In the product stream, C 8 The amount of oligomers decreased slightly, while C 12 The amount of oligomers increased slightly. This example illustr...

Embodiment 3

[0077] Example 3: Extended On Time (TOS) in the Presence of Oxygenates and Multiple Catalyst Regenerations

[0078] Catalyst: Clariant TiAPSO-34, total WHSV=2.6, recycle feed: the mass ratio of fresh feed is 2: 1; Reactor top temperature 180-185 ℃, P (psig)=250; 2.9g Clariant TiAPSO-34 (granular Granules) + glass microspheres; typical mass proportion = 97.0%; total oxygenates in feed: 100 ppm water, 1800 ppm (mass ratio of isobutanol and tert-butanol is 85 / 15).

[0079] Table 3 below shows that C 8 and C 12+ The percentages of oligomers are in the range of 30%-45% and 50%-65%, respectively. Surprisingly, the catalyst can be used for at least 10 days without regeneration and still produce acceptable yields of C 8 and C 12 Oligomer. Also surprisingly, the catalyst is also regenerable in air and can be used for long periods of time without the need for regeneration. C 8 +Oligomer selectivity and high yield, long catalyst life without replacement and long catalyst regenerat...

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 present disclosure relates to a catalytic process for oligomerizing bio-based olefin mixtures to higher value renewable fuels via a doped chabazite catalyst. Comprising C2-C8 olefins and oxygenates are fed into an oligomerization process utilizing a doped chabazite catalyst, resulting in high yields and selectivity of oligomers used to produce bio-based jet fuel and / or diesel fuel, depending on the reaction temperature and pressure. The process also produces isooctane suitable for making bio-based gasoline. The process may tolerate relatively high levels of oxygenates in the olefin feed, and the catalyst is capable of air regeneration.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Application No. 62 / 867,776, filed June 27, 2019, which is hereby incorporated by reference in its entirety for all purposes. technical field [0003] The subject matter described in this paper involves a method for converting the derived C 2 -C 5 A process for the conversion of lower linear and branched monoolefins of bio-based alcohols to higher hydrocarbons that can be used as precursors for the production of isooctane (ie gasoline), jet fuel or diesel. Background technique [0004] The acceptance of biofuels in the diesel fuel industry and the aviation industry is even far behind that of the automotive industry. Methyl trans-esterified fatty acids derived from seed oils (eg, soybean, corn, etc.) have some specific drawbacks compared to petroleum-derived diesel fuels, particularly the insufficient amount of available seed oil. Even under the most optimistic sce...

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): C07C2/04C10L1/04
CPCC10L1/04C10G50/00C10G2300/1011C10G2400/04C10G2400/08C10G3/00C10G3/49C07C1/24C07C2/12C07C2529/89Y02P30/20C07C11/09C07C11/02B01J29/85B01J38/02C10G2300/4018C10G2300/70C10G2400/22
Inventor J·史密斯M·舍丁
Owner 吉沃公司
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