Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Odh complex with on-line mixer unit and feed line cleaning

A combined device and mixer technology, applied in the field of chemical combined devices of ODH, can solve the problems of high cost and regular shutdown of coke by-products.

Pending Publication Date: 2020-11-13
NOVA CHEM (INT) SA
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, the process is expensive due to high fuel requirements, the requirement for reactor materials that can withstand high temperatures, and the necessity to use downstream separation units to separate unwanted by-products
Third, the production of coke by-products requires regular shutdowns for cleaning and maintenance

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
  • Odh complex with on-line mixer unit and feed line cleaning
  • Odh complex with on-line mixer unit and feed line cleaning
  • Odh complex with on-line mixer unit and feed line cleaning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0220] An effective solvent for dissolving sulfur scale was found in experiments. The following chemicals were experimentally tested:

[0221] 1. Toluene*

[0222] 2. Methanol

[0223] 3. Wash Oil* (Refined Heavy Reformate - Aromatics)

[0224] 4. Heptane

[0225] 5. water

[0226] 6. EnviroSol (citrus based solvent / degreaser)

[0227] 7. Dimethylsulfoxide (DMSO)

[0228] 8. Carbon disulfide (CS2)

[0229] 9. Dimethyl disulfide (DMDS)

[0230] 10. Tert-butyl polysulfide (TBPS)

[0231] CS2 was found to be a good solvent at room temperature for removal of fouling material, however this solvent presents a safety hazard and is very toxic. Also, its effect on the ODH method is unknown.

[0232] Heated toluene was also found to be effective and a safer solvent than CS2. Therefore, the use of heated toluene has been recommended for extreme environments. For example, when a feed vaporizer is blown off, material is pushed into the flare tip where it can accumulate and plug...

Embodiment approach

[0245] 1. A chemical complex for the oxidative dehydrogenation of lower alkanes, said chemical complex comprising:

[0246] i) at least two mixers for premixing oxygen-containing gas and lower alkane-containing gas to produce a mixed feedstock stream and additionally comprising a purge circuit; and

[0247] ii) at least one oxidative dehydrogenation reactor;

[0248] wherein said at least two mixers are connected in parallel to said at least one oxidative dehydrogenation reactor such that during normal operation either the first gas mixing unit or the second gas mixing unit is connected to said at least one oxidative dehydrogenation reactor; as well as

[0249] wherein the oxidative dehydrogenation catalyst contained within the at least one oxidative dehydrogenation reactor reacts with the mixed feed stream to produce a product stream comprising the corresponding olefin.

[0250] 2. The chemical complex of embodiment 1, wherein the cleaning circuit comprises a pump, a filter...

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

Oxidative dehydrogenation is an alternative to the energy extensive steam cracking process presently used for the production of olefins from paraffins. Various embodiments of an oxidative dehydrogenation chemical complex designed to allow removal of sulfur containing contaminants that collect in the gas mixer unit and in the feed lines leading to the ODH reactor are disclosed herein.

Description

technical field [0001] The present disclosure generally relates to the oxidative dehydrogenation (ODH) of lower alkanes to the corresponding alkenes. More specifically, the present disclosure relates to a chemical complex for ODH comprising two upstream gas mixer units, and a method for cleaning sulfur-containing deposits from the gas mixer and feed line to the ODH reactor way of things. Background technique [0002] Disclosed herein is an integrated plant for the oxidative dehydrogenation (ODH) of lower alkanes to the corresponding alkenes. Various embodiments relate to a chemical complex for ODH comprising two gas mixer units associated with an ODH reactor and cleaning components and methods. Also disclosed is a method of operating an ODH reactor which allows cleaning of sulfur-containing deposits from the gas mixing unit and / or from the feed line from the mixer unit to the reactor. [0003] Catalytic oxidative dehydrogenation of alkanes to the corresponding alkenes is ...

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): C07C5/42C10G11/04C10G27/04C10G70/00B01J4/00B01F5/00B01F3/02C10G75/00B08B9/032B01F23/10
CPCB01J4/008B08B9/00B08B9/027C10G27/04C10G70/00C10G75/00C10G11/04B01J2219/00038C10G2300/4031C10G2400/20B01J8/26C11D2111/20C07C5/42B01D53/002B01D5/006B01D53/26B01D53/229F25J3/0233C07C2523/64C07C2523/755C07C2523/32B01J2208/00115B01J2208/00176F25J2205/30F25J2205/40F25J2205/82F25J2205/90F25J2215/60C07C5/48B01J8/0278B01J8/0285B01J8/065B01J8/067B01J8/1827B01J8/1836B01J19/2445B01D5/003B01D53/1475
Inventor V·西蒙申科夫S·高尔达尼亚C·奥尔塔K·瑟尔哈尔E·克拉维尔M·科瑟莱克Y·金
Owner NOVA CHEM (INT) SA
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
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