Emulsifier package with a branched and optionally with a propoxylated surfactant for fuel emulsion

Patent metadata

Field	Value
Publication number	US-12110463-B2
Application number	US-202118251603-A
Country	US
Kind code	B2
Filing date	Oct 26, 2021
Priority date	Nov 4, 2020
Publication date	Oct 8, 2024
Grant date	Oct 8, 2024

Abstract

A method for powering a diesel engine with a fuel emulsion involves preparing the fuel emulsion by emulsifying a fuel and water in the presence of an emulsifier package, which contains a branched surfactant of the formula (I) as defined below and optionally, a propoxylated surfactant of the formula (II) as defined below. A fuel emulsion for powering a diesel engine is also provided.

First claim

The invention claimed is:

1. A method for powering a diesel engine with a fuel emulsion, the method comprising:
preparing the fuel emulsion by emulsifying a fuel and water in the presence of an emulsifier package which comprises a branched surfactant of the formula (I)
R a —O-(AO a ) m —R a′   (I),

in which
R a is a branched C 6-32 alkyl,
AO a is an ethylene oxide radical, propylene oxide radical, butylene oxide radical, pentylene oxide radical, styrene oxide radical, or mixture thereof,
m is a number from 1 to 100, and
R a′ is hydrogen or C 1-4 alkyl; and
wherein the emulsifier package additionally comprises a propoxylated surfactant of the formula (II)
R b —O—(AO b ) n —R b′   (II),

in which
R b is a linear or branched C 6-32 alkyl,
AO b is a mixture of ethylene oxide radical and propylene oxide radical,
n is a number from 1 to 100, and
R b′ is hydrogen or C 1-4 alkyl.

2. The method according to claim 1 , wherein R a is a branched C 8-14 alkyl.

3. The method according to claim 1 , wherein R a is a branched tridecyl.

4. The method according to claim 1 , wherein AO a is an ethylene oxide radical.

5. The method according to claim 1 , wherein R b is a linear C 10-22 alkyl.

6. The method according to claim 1 , wherein R b is a linear or branched C 16-18 alkyl.

7. The method according to claim 1 , wherein R a′ and R b′ are hydrogen.

8. The method according to claim 1 , wherein the emulsifier package comprises the branched surfactant and the propoxylated surfactant in a weight ratio of 10:1 to 1:10.

9. The method according to claim 1 , wherein the emulsifier package comprises 1 to 99 wt %, 5 to 90 wt %, 10 to 80 wt %, or 20 to 70 wt % of the branched surfactant.

10. The method according to claim 1 , wherein the emulsifier package comprises 1 to 99 wt %, 5 to 90 wt %, 10 to 80 wt %, or 20 to 70 wt % of the propoxylated surfactant.

11. The method according to claim 1 , wherein the emulsifier package contains up to 10 wt % of an ionic surfactant.

12. The method according to claim 1 , wherein the emulsifier package comprises at least 10, 30, or 50 wt % of water, an organic solvent, or a mixture of water and the organic solvent.

13. The method according to claim 1 , wherein the fuel emulsion comprises the emulsifier package in an amount of 0.05 to 0.4 wt %, based on the diesel.

14. The method according to claim 1 , wherein the fuel emulsion comprises 40 to 80 wt % water.

15. The method according to claim 1 , wherein the fuel is marine fuel.

16. A fuel emulsion for powering a diesel engine, as defined in claim 1 .

17. The method according to claim 8 , wherein the emulsifier package comprises the branched surfactant and the propoxylated surfactant in a weight ratio of 4:1 to 1:4.

18. The method according to claim 11 , wherein the emulsifier package contains up to 1 wt % of the ionic surfactant.

19. The method according to claim 1 , wherein the m and the n are each 3 to 60.

20. The method according to claim 1 , wherein the molar ratio of the ethylene oxide radical:the propylene oxide radical in the AO b is 50:1 to 1:2.

Assignees

• Basf Se

Inventors

• Wagner Jochen
• Harhausen Marcel
• Schoeppe Thorsten
• Steppan Simon
• Meissner Jens

Classifications

• C10L2300/20

  Mixture of two components · CPC title

• C10L2270/026

  for diesel engines, e.g. automobiles, stationary, marine · CPC title

• C10L2250/082

  Oil in water (o/w) emulsion · CPC title

• C10L2200/0295

  Water · CPC title

• C10L2200/0254

  Oxygen containing compounds · CPC title