Production of biodiesel from combination of corn (maize) and other feed stocks

• US 20070099278A1
• Filed: 10/31/2006
• Published: 05/03/2007
• Est. Priority Date: 11/01/2005
• Status: Abandoned Application

• Current Assignee: Palaniswamy Aare
• Original Assignee: Palaniswamy Aare
• Inventors: Aare, Palaniswamy
• Application Number:
  US11/590,262
• Publication Number:
  US 20070099278A1
• Time in Patent Office: Days
• US Class Current: 435/134
• CPC Class Codes: C07C 51/46 by azeotropic distillation
• CPC Class Codes: C07C 57/12 Straight chain carboxylic acids containing eighteen carbon atoms
• CPC Class Codes: C12P 7/06 Ethanol, i.e. non-beverage
• CPC Class Codes: Y02E 50/10 Biofuels, e.g. bio-diesel

Abstract

A method and system to produce biodiesel from a combination of corn (maize) and other agro feedstock may be simarouba, mahua, rice, pongamia etc. Germ is separated (either by wet process or dry process) from corn, crude corn oil extracted from germ and corn starch milk/slurry is heated and cooked in jet cooker to about 105 degree Celsius, enzymes added to convert starch into fermentable sugars in liquification and saccharification process and rapidly cooled down to about 30 degree Celsius. Simarouba fruits syrup, mahua syrup is mixed with corn starch milk (after saccharification). When yeast is added the fermentation takes place for about 72 hours. Thereafter the fermented wash is distilled to produce ethanol. Water consumed in dry process is very less compared to traditional wet process system. Corn oil and mixture of other oils is fed into transesterification (reaction) vessels where ethanol with catalyst, usually sodium hydroxide is added and reaction takes place for about a period of 2-8 hours. Crude biodiesel and crude glycerin as by-products is produced. Excess ethanol removed by distillation process. Crude biodiesel washed with warm water to remove residual soaps or unused catalyst, dried and biodiesel stored for commercial use. Oil extracted from spent bleach mud (used sodium bentonite), a waste product of edible oil refineries may also be utilized for economical production of biodiesel in combination of corn oil and ethanol.

Claims

1. A system of economical production of biodiesel from combination of corn and other agro feedstock, wherein:

the base or major raw material is corn (maize) and agro feedstock is simarouba,

wherein corn germ and simarouba seeds are mixed and oil extracted, followed by corn starch converted into fermentable sugars by liquification &

saccharification process. Simarouba fruit syrup mixed with corn starch after saccharification process,

wherein yeast is added to the mixture and fermentation takes place for about 72 hours, where after fermented wash is distilled to produce ethanol,

wherein corn oil &

simarouba oil mixture, ethanol and catalyst are subjected to transesterification process to produce biodiesel and by-product glycerin.

2. A system of claim 1, where agro feedstock is mahua seeds and mahua dried flowers.

3. A system of claim 1, where agro feedstock is simarouba and mahua seeds and syrup.

4. A system of claim 1, where agro feedstock is pongamia seeds.

5. A system of claim 1, where agro feedstock is neem seeds.

6. A system of economical production of biodiesel from combination of corn, and unedible oil extracted from spent bleach mud (spent sodium bentonite mud), wherein the base or major raw material is corn.

7. A method of economical production of biodiesel from combination of corn and other agro feedstock, wherein:

the base or major raw material is corn (maize) and agro feedstock is simarouba,

wherein corn germ and simarouba seeds are mixed and oil extracted, followed by corn starch converted into fermentable sugars by liquification &

saccharification process. Simarouba fruit syrup mixed with corn starch after saccharification process,

wherein yeast is added to the mixture and fermentation takes place for about 72 hours, where after fermented wash is distilled to produce ethanol,

wherein corn oil &

simarouba oil mixture, ethanol and catalyst are subjected to transesterification process to produce biodiesel and by-product glycerin.

8. A method of claim 7, where agro feedstock is mahua seeds and mahua dried flowers.

9. A method of claim 7, where agro feedstock is simarouba and mahua seeds and syrup.

10. A method of claim 7, where agro feedstock is pongamia seeds.

11. A method of claim 7, where agro feedstock is neem seeds.

12. A method of economical production of biodiesel from combination of corn, and unedible oil extracted from spent bleach mud (spent sodium bentonite mud), wherein the base or major raw material is corn.