CN101225409A

CN101225409A - Fuel ethanol produced by straw

Info

Publication number: CN101225409A
Application number: CNA2007100552488A
Authority: CN
Inventors: 丁长青
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-19
Filing date: 2007-01-19
Publication date: 2008-07-23

Abstract

The invention relates to a preparation method for an ethanol from plant straw, belonging to the fuel ethanol manufacturing technical field. The process of the method is characterized in that the different crushed straws are mixed together by the weight ratio, the mixture is soaked into the water for 7 days and boiled for 30 minutes after fishing out and cooled to 34 degree centigrade, then a yeast wine and a zymase are filled and stirred evenly in the fermentation cylinder, fermenting for 5 to 6 days, distilling in a distill bottle, an ethanol liquid with 60% ethanol (volume ratio) is made when the distilling liquid is taken out at 78 to 80 degree centigrade, and an ethanol liquid with 95% ethanol (volume ratio) is made when the distilling liquid is continued to distill, an ethanol liquid with 99.8% ethanol (volume ratio) is purified when the original ethanol liquid with 95% ethanol (volume ratio) filled with a calcium chloride is dehydrated, a denatured fuel ethanol is formed when the ethanol liquid with 99.8% ethanol (volume ratio) is filled with a denaturant, that is an ethanol gasoline.

Description

Fuel ethanol produced by straw

Technical field:

The invention belongs to combustion producing and ethanol manufacturing technology field, is the production method with the stalk production combustion producing and ethanol of plant.

Background technology:

Alcoholic acid production both at home and abroad at present, major part is as raw material with grain administration class, so the high development of production cost is restricted, and of the present invention be stalk with plant, for main raw material is equipped with a certain proportion of corn dregs of fat, corn cob, produce alcohol fuel, promptly save food, reduce production costs again, the ethanol content of producing can reach 98%-99.8% (volume ratio) and meet state specified standards, to the ethanol of former 98%-99.8%, add a certain amount of denaturing agent by national regulation, can form a kind of denatured fuel ethanol, denatured fuel ethanol it can be in the ratio and the gasoline of national regulation, diesel oil is mixed can be as automobile fuel, so-called ethanol petrol.

Summary of the invention:

The technical problem to be solved in the present invention is to disclose a kind ofly promptly to save food with straw production production of fuel ethanol method, reduces cost again.

The scheme of the technical problem to be solved in the present invention is finished by following step:

1, selects materials: select for use sorgo stalk, corn cob, the Semen Maydis grit of new plantation then to make raw material.

2, pulverize: sorgo stalk is ground into 1-2 centimetre, and corn cob meal is broken into 20 orders, and the corn ground-slag becomes 40 orders.

3, various raw material weight proportionings are in 100 jin of raw materials

Sorgo stalk 90

Semen Maydis grit 10

Corn cob 5

Distiller's yeast 0.25

Wine enzyme 0.3

4, hydrolysis: various raw materials are combined together by proportioning weight stir, soak, amount of water is controlled at raw material total amount 50%-60%, raw material soaking 7 days.

5, heat treated: the rent material of hydrolysis is pulled out, drop in the molten device of steam, heat 110 ℃, boiling 30 minutes expects to pull out to cool 34 ℃ boiling again, adds distiller's yeast 0.25 again, wine enzyme 0.3, do not add again before distiller's yeast, the wine enzyme, earlier with distiller's yeast, wine enzyme with 34 ℃ of warm water resurrections 30 minutes, and then add in the pan feeding and stir.

6, the fermentation: the coarse fodder that will boil and boil the material water drop in the lump in the fermentor tank, ferment fermentation time 5-7 days.

7, distillation: the wine unstrained spirits of fermentation is dropped into retort distill, get distillate between 78-80 ℃ and can make 60%-70% ethanol distillation liquid and continue distillation again and can obtain 95% ethanol liquid.(volume ratio).

8, dehydration, purification are dewatered to former 95% ethanol input distillation tower adding calcium chloride 30%, and distillation can obtain the ethanol liquid of 99.8% (volume ratio).

The ethanol of former 99.8% (volume ratio) is pressed national regulation add denaturing agent, can form a kind of denatured fuel ethanol.So-called vehicle-use alcohol gasoline.

Embodiment:

Various raw materials are mixed by weight, stir, the 7d that is soaked in water pulled poach out 30 minutes again, and amount of water is that pot is molten long-pending in the pot ¹/ ₃, the material that will boil is pulled out and is cooled 34 ℃ again, adds distiller's yeast 0.25, and wine enzyme 0.3 stirs, and drops into fermentation 5-6d in the fermentor tank again.Wass is distilled, the distillate of getting between 78-80 ℃ can make 50-60% ethanol liquid again, continues distillation and can get 95% (volume ratio) ethanol liquid.Former 95% (volume ratio) ethanol liquid is added calcium chloride 30%, drop into distillation tower and distill, can make 99.8% (volume ratio) ethanol liquid, can form a kind of vehicle fuel ethanol with denaturing agent former 99.8% (volume ratio) ethanol liquid.

Claims

1. the generation method of a fuel ethanol produced by straw is characterized in that its adopts sweet sorghum stalk, corn cob, Semen Maydis grit (corn take off plumule after secondary material) to make, by the step finishes down:

(1) selects materials: select for use sorgo stalk, corn cob, the Semen Maydis grit of new plantation then to make raw material.

(2) pulverize: sorgo stalk is ground into 1-2 centimetre, and corn cob meal is broken into 20 orders, and the corn ground-slag becomes 40 orders.

(3) various raw material weight proportionings are: in 100 jin of raw materials

Sorgo stalk 90

Semen Maydis grit 10

Corn cob 5

Distiller's yeast 0.25

Wine enzyme 0.3

(4) hydrolysis: various raw materials are mixed by weight ratio stir, soak, amount of water is controlled at raw material total amount 50%-60%, raw material soaking 7 days.

(5) heat treated: the rent material of hydrolysis is pulled out, drop in the molten device of steam, heat 110 ℃, boiling 30 minutes expects to pull out to cool 34 ℃ boiling again, adds distiller's yeast 0.25 again, wine enzyme 0.3, do not add again before distiller's yeast, the wine enzyme, earlier with distiller's yeast, wine enzyme with 34 ℃ of warm water resurrections 30 minutes, and then add in the pan feeding and stir.

(6) fermentation: the coarse fodder that will boil and boil the material water drop in the lump in the fermentor tank, ferment fermentation time 5-7 days.

(7) distillation: the wine unstrained spirits input retort of fermentation is distilled, and the distillate of getting between 78-80 ℃ can make 60%-70% ethanol distillation liquid, continues distillation again and can obtain 95% ethanol liquid.(volume ratio).

(8) dehydration, purification, the ethanol to former 95% drop into distillation tower adding calcium chloride 30% dewaters, and distillation can obtain the ethanol liquid of 99.8% (volume ratio).