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Conversion of fatty acids to base oils and transportation fuels

a technology of transportation fuels and fatty acids, which is applied in the field of conversion of fatty acids to base oils and transportation fuels, can solve the problems of high hydrogen consumption and low molecular weight of some fatty acids by themselves, and achieve the effect of reducing the cost of base oils and reducing the cost of fatty acids

Inactive Publication Date: 2012-12-13
CHEVROU USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of direct hydrotreating of fatty acids is its high hydrogen consumption.
In addition, the molecular weight of some fatty acids by themselves is too low to prepare base oils.

Method used

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  • Conversion of fatty acids to base oils and transportation fuels
  • Conversion of fatty acids to base oils and transportation fuels

Examples

Experimental program
Comparison scheme
Effect test

example 1

Fatty Acid Feeds

[0051]Fatty acid feeds were obtained with properties shown below in Table 1. Diluent was added to the fatty acids to lower the total acid number (TAN) to less than 20 mg-KOH / g feed.

TABLE 1Feed NameCoconut fatty acidStearic acidin n-tridecanein n-octaneAPI Gravity53.2 65.4TAN, mg-KOH / g feed12.7010.2SimDis, wt %0.5 / 5455 / 457250 / 262 10 / 30458 / 461265 / 268 50 / 463 /   269 /    70 / 90464 / 465271 / 272 95 / 99.5466 / 590273 / 689

example 2

Decarboxylation-coupling Dimerization of Coconut Fatty Acid over an Alumina Catalyst

[0052]The decarboxylation-coupling dimerization of coconut fatty acid over an alumina catalyst was conducted at conditions of 680° F. to 730° F., about 0.45 to 1.0 h−1 LHSV and 45 to 60 psig unit pressure. Both whole liquid product (WLP) and Wasson gas samples were taken periodically for inspections. The WLP was also submitted for total acid number test to check the conversion of fatty acid. The results are set forth in Table 2.

TABLE 2Run time, h45141165189957981CAT,° F.680680680680730730LHSV,h−10.980.460.440.480.500.51Pressure, psig455050605050No-lossYield, wt. %C1-400.040.030.020.040.03C5-250°F.0.010.010.0100.080250-550°F.96.7195.5495.3695.639695.97550-700°F.0.450.430.420.370.50.55700°F.+2.122.492.622.522.382.44WLPTAN, mg-KOH / g4.341.011.051.760.240.26SimDis, wt. %0.5 / 5  454 / 458455 / 458455 / 458455 / 459445 / 460449 / 45910 / 30460 / 463460 / 463460 / 464460 / 464462 / 465460 / 46450 /  465 /   465 /   466 /   466 /   467 /   466 /   7...

example 3

Decarboxylation-Coupling Dimerization of Stearic Acid Over an Alumina Catalyst

[0055]The decarboxylation-coupling dimerization of stearic acid over an alumina catalyst was conducted at conditions of 680° F. to 730° F., about 1 to 2 h−1 LHSV and 30 to 50 psig unit pressure. Both whole liquid product (WLP) and Wasson gas samples were taken periodically for inspections. The WLP was also submitted for total acid number test to check the conversion of fatty acid. The results are set forth in Table 4.

TABLE 4Run Time, h11721386110291053CAT, ° F.680680730730730LHSV, h−10.970.971.941.951.95Pressure, psig5045303030No-loss Yield, wt. %C1-40.010.02000 C5-250° F.0.780.730.390.550.57250-550° F.98.0297.6797.1196.6397.43550-700° F.0.930.971.171.171.29700° F.+1.431.832.482.951.95WLPTAN, mg-KOH / g2.972.592.88SimDis, wt. %0.5 / 5246 / 260249 / 262251 / 264250 / 264250 / 264 10 / 30262 / 265264 / 266265 / 268265 / 268265 / 268 50 / 266 /   268 /   270 /   270 /   269 /    70 / 90268 / 269269 / 271271 / 273271 / 272271 / 272 95 / 99.5269 / 910271 / 912273 / 93...

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PUM

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Abstract

The present invention is directed to methods for processing fatty acids to provide for base oil and transportation fuels, wherein decarboxylation-coupling dimerization of fatty acids provides dimer ketones from which the base oils and transportation fuels may be produced.

Description

TECHNICAL FIELD[0001]The invention relates generally to lubricants and fuels derived from renewable resources, and specifically to methods for efficiently making base oils and transportation fuels from fatty acids.BACKGROUND[0002]Due to a variety of environmental and energy concerns, there has been a high interest in promoting the use of renewable resources (e.g., biomass) in the manufacture of lubricants and transportation fuels. Fatty acids are a readily available renewable resource.[0003]Conventional processes for hydroprocessing fatty acids generally involve hydrotreating. A disadvantage of direct hydrotreating of fatty acids is its high hydrogen consumption. In addition, the molecular weight of some fatty acids by themselves is too low to prepare base oils.[0004]Additional processes for producing high quality lubricants and transportation fuels from renewable resources are still sought.SUMMARY OF THE INVENTION[0005]In one aspect, the invention relates to a method comprising: co...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10L1/185
CPCC10L1/08C10L10/12C10M105/04C10M2203/003C10M2203/1025Y02E50/13C10N2220/025C10N2230/02C10N2270/00C10N2220/023C10N2220/022C10G45/58C10G45/62C10G45/64C10G65/043C10G3/42C10G2300/1011C10G2300/302C10G2400/04C10G2400/10Y02P30/20Y02P20/582C10N2020/011C10N2020/065C10N2030/02C10N2070/00Y02E50/10C10N2020/02
Inventor ZHAN, BI-ZENGHOMMELTOFT, SVEN IVAR
Owner CHEVROU USA INC
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