CN105463032B - A kind of preprocess method of fuel ethyl hydrate raw material cassava - Google Patents
A kind of preprocess method of fuel ethyl hydrate raw material cassava Download PDFInfo
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- CN105463032B CN105463032B CN201510922996.6A CN201510922996A CN105463032B CN 105463032 B CN105463032 B CN 105463032B CN 201510922996 A CN201510922996 A CN 201510922996A CN 105463032 B CN105463032 B CN 105463032B
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- cassava
- hydrochloric acid
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- epidermis
- drying
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Abstract
The invention belongs to biomass energies and resources technology field, the epidermis, root and ash content attached thereto of cassava rhizome are not can be removed to solve traditional impurity-removing method, the presence of impurity causes equipment and pipeline to wear, reduce the activity of amylase and saccharomycete, and then the problems such as reducing ethanol production, a kind of preprocess method of fuel ethyl hydrate raw material cassava is provided.It is washed by the drying of cassava room temperature, with dilute hydrochloric acid, sedimentation filtration removes impurity, is then neutralized to neutrality, grinding screening, drying detection with sodium hydroxide.Due to the epidermis and tiny root of dilute hydrochloric acid energy partial hydrolysis cassava rhizome, main component is cellulose and pectin, reduce the attachment to dirt, ash content, tiny root and the epidermis of the effective removal cassava of dilute hydrochloric acid pretreatment, reduce the abrasion of equipment and pipeline, inhibition of the miscellaneous bacteria to fermentation process is reduced, the yield of ethyl alcohol is improved.Make cleaning solution with dilute hydrochloric acid, sodium hydroxide neutralizes, and mainly contains sodium chloride and ash content, no pollution to the environment in waste water.
Description
Technical field
The invention belongs to biomass energies and resources technology field, and in particular to a kind of pre- place of fuel ethyl hydrate raw material cassava
Reason method.
Background technique
With the development of world economy society, crisis caused by energy shortage aggravates increasingly.Scientist's estimation, can exploit stone
Oilreserves only use about 50 years for the mankind, and natural gas also can be used 75 years, and coal is then 200 ~ 300 years.Therefore, the world is each
The research and development to new energy, especially regenerated biological energy are unfolded in state one after another.The form that is primarily present of bioenergy has
Alcohol fuel, biodiesel, biogas, hydrogen and fuel cell etc., wherein most noticeable with the research of alcohol fuel and production.
The primary raw material of alcohol fuel has grain (corn, sorghum, wheat etc.), non-grain crop (cassava, sugarcane, sweet sorghum stalk etc.) with
And lignocellulosic etc..But grain security determines that Fuel Alcohol Development should follow the original of " do not strive grain with people, do not strive ground with grain "
Then, and lignocellulosic ethyl alcohol technology is not mature enough.Therefore, non-grain crop (cassava, sugarcane, sugar grass etc.) produces fuel second
Alcohol is the support emphasis of national new energy policy.Wherein, cassava is recognized by the world as the raw material for having the potentiality that grow a lot, and
One of the non-grain crop raw material that China's Fuel Alcohol Development is advocated.Due to alcohol fuel Commercial cultivation be cassava rhizome,
After over cleaning, still contain a small amount of grit and soil (being predominantly present on tiny root and epidermis, it is extremely difficult to remove), this
Outside, there are the epidermis of one layer of brown and the root to remove in the surface of Tapioca chips root, and soil, epidermis and root all have largely
Miscellaneous bacteria increases the extent of injury of miscellaneous bacteria in fermentation process, reduces the activity of amylase and saccharomycete, and then influences ethyl alcohol
Yield, in addition, ash content and epidermis also cause to wear to equipment with pipeline.
The preprocess method of the sundries such as traditional removal grit, root and epidermis mainly applies water-washing technique, but due to
Ash content is all attached in the rhizome epidermis surface and tiny root of cassava, the method for washing it is extremely difficult except deash, tiny root with
Epidermis.And the impurity such as the silt particle, root and epidermis on cassava surface are removed, miscellaneous bacteria source can not only be farthest reduced, hair is reduced
Ferment process miscellaneous bacteria improves the yield of alcohol to amylase and the active potential hazard of saccharomycete, can also reduce above-mentioned impurity to setting
The standby abrasion with pipeline.Therefore the preprocess method for developing effective cassava rhizome is very necessary.
Summary of the invention
The present invention not can be removed the epidermis, root and ash attached thereto of cassava rhizome for traditional impurity-removing method
Point, the presence of these impurity not only causes equipment and pipeline to wear, also reduce the activity of amylase and saccharomycete, and then drops
The problems such as low ethanol production, provides a kind of preprocess method of fuel ethyl hydrate raw material cassava.
The present invention is realized by following technical solution: a kind of preprocess method of fuel ethyl hydrate raw material cassava, and cassava is normal
Temperature drying is washed with dilute hydrochloric acid, and sedimentation filtration removes impurity, is then neutralized to neutrality with sodium hydroxide, is dried, grinding screening,
Detection, the specific steps are as follows:
(1) the pre- removal of impurities of drying: cassava is dried under room temperature, diagrid removes packaging bag, the rope made of hemp, biggish grit impurity；
(2) dilute hydrochloric acid is washed: cassava materials enter can,douche, and it is 0.01% ~ 0.08%, 20 ~ 100L/kg that mass concentration, which is added,
The dilute hydrochloric acid of cassava is rinsed 2 ~ for 24 hours, rinsing temperature is 50 ~ 90 DEG C；
(3) filter: after dilute hydrochloric acid rinses, cassava epidermis and tiny root are destroyed, sedimentation remove rinse ash content and
Epidermis other impurities, sedimentation is using precipitation apparatus common in industry；
(4) neutralize: sedimentation except deash and epidermis other impurities after, adding sodium hydroxide is neutralized to neutrality；
(5) it dries: the cassava after neutralization is dried；
(6) grinding screening: will except deash, the cassava of impurity grinding, after grinding tapioca starch screening, granularity be 0.2 ~
2mm is spare；
(7) analyze: drying to constant weight for the tapioca starch that screen size is 0.2 ~ 2mm, and tapioca starch sample is then taken to measure skin slag
And dirt content, measuring method use ASTM E872-82, E1755-01 standard, detects skin slag and content of ashes is lower than ASTM
The tapioca starch of E872-82, E1755-01 standard is used as alcohol fermentation.
The present invention cleans cassava with dilute hydrochloric acid, since dilute hydrochloric acid is capable of the epidermis of partial hydrolysis cassava rhizome and thin
Small root, main component are cellulose and pectin, reduce its attachment to dirt, compared with traditional method, dilute hydrochloric acid is located in advance
Reason method more can effectively remove the ash content, tiny root and epidermis of cassava, to reduce the abrasion of equipment and pipeline, reduce miscellaneous
Inhibition of the bacterium to fermentation process, improves the yield of ethyl alcohol.Use dilute hydrochloric acid as cleaning solution, is neutralized using sodium hydroxide, waste water
In mainly contain a small amount of sodium chloride and ash content, no pollution to the environment belongs to green processes.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
Below by specific embodiment, the invention will be further described.Embodiment is to make those skilled in the art
The present invention can be better understood, but the present invention is not imposed any restrictions.
A kind of preprocess method of fuel ethyl hydrate raw material cassava rhizome is washed by the drying of cassava room temperature, with dilute hydrochloric acid, is settled
It is filtered to remove impurity, is then neutralized to neutrality, grinding screening, drying detection with sodium hydroxide, the specific steps are as follows:
(1) the pre- removal of impurities of drying: cassava is dried under room temperature, diagrid removes packaging bag, the rope made of hemp, biggish grit impurity；
(2) dilute hydrochloric acid is washed: cassava materials enter can,douche, and it is 0.01% ~ 0.08%, 20 ~ 100L/kg that mass concentration, which is added,
The dilute hydrochloric acid of cassava is rinsed 2 ~ for 24 hours, rinsing temperature is 50 ~ 90 DEG C；
(3) filter: after dilute hydrochloric acid rinses, cassava epidermis and tiny root are destroyed, sedimentation remove rinse ash content and
Epidermis other impurities, sedimentation is using precipitation apparatus common in industry；
(4) neutralize: sedimentation except deash and epidermis other impurities after, adding sodium hydroxide is neutralized to neutrality；
(5) it dries: the cassava rhizome after neutralization is dried；
(6) grinding screening: will except deash, the cassava of impurity grinding, after grinding tapioca starch screening, granularity be 0.2 ~
2mm is spare；
(7) drying analysis: drying to constant weight for the tapioca starch that screen size is 0.2 ~ 2mm, and tapioca starch sample is then taken to measure
Skin slag and dirt content, measuring method use ASTM E872-82, and E1755-01 standard, detects skin slag and content of ashes is lower than
The tapioca starch of ASTM E872-82, E1755-01 standard is used as alcohol fermentation.
Embodiment 1: under room temperature, the cassava from Beihai Fisheries Base Guangxi Province being dried, miscellaneous by diagrid removal packaging bag and the rope made of hemp etc.
Matter.Take a certain amount of sample to carry out skin slag and ash content test, measuring method using ASTM standard (ASTM E872-82,
E1755-01), measurement result: skin slag and content of ashes are 7.7%.Cassava materials enter can,douche after removal of impurities, and mass concentration is added
It is rinsed for 0.05% dilute hydrochloric acid, the dilute hydrochloric acid amount of addition is 70 L/ (kg cassava).Washing time is 10h, rinses temperature
It is 70 DEG C.After dilute hydrochloric acid rinses, cassava epidermis and tiny root are destroyed, and sedimentation removes the ash content rinsed and epidermis, and other are miscellaneous
Matter, sedimentation is using precipitation apparatus common in industry；Sedimentation except deash and epidermis other impurities after, in adding sodium hydroxide
With extremely neutrality；Then grinding screening, drying to constant weight for the tapioca starch that granularity is 0.8mm, detects skin slag and content of ashes is 0.8%,
And under same experimental conditions, it is that quality is dense that the skin slag and content of ashes of the tapioca starch after being rinsed with water, which are 3.9%(concentrations above,
Degree).Under the same terms, mentioned using the more traditional preprocess method of the alcohol yied after pretreated cassava fermentation of the invention
It is high by 6.4%, improve the yield of ethyl alcohol.
Embodiment 2: the cassava for originating from Vietnam is dried under room temperature, removes larger impurity.A certain amount of sample is taken to carry out skin
Slag and ash content test, measuring method use ASTM standard (ASTM E872-82, E1755-01), measurement result: skin slag and
Content of ashes is 8.3%.Cassava materials enter can,douche, and the dilute hydrochloric acid that mass concentration is 0.08% is added and is rinsed, addition
Dilute hydrochloric acid amount is 100 L/ (kg cassava).Washing time is 2h, and rinsing temperature is 90 DEG C.After dilute hydrochloric acid rinses, cassava epidermis
It is destroyed with tiny root, sedimentation removes the ash content rinsed and epidermis other impurities, and sedimentation is using commonly sedimentation is set in industry
It is standby；Sedimentation except deash and epidermis other impurities after, adding sodium hydroxide is neutralized to neutrality；Drying, then grinding screening, grain
Drying to constant weight for the tapioca starch that degree is 2mm, detects skin slag and content of ashes is 0.6%, and under same experimental conditions, it is rinsed with water
The skin slag and content of ashes of tapioca starch afterwards are that 4.2%(concentrations above is mass concentration).Under the same terms, using the present invention
The fermentation of pretreated cassava after the more traditional preprocess method of alcohol yied improve 5.5%, improve the production of ethyl alcohol
Rate.
Embodiment 3: under room temperature, taking cassava to dry, and removes biggish impurity.A certain amount of sample is taken to carry out skin slag and ash content
Assay, measuring method use ASTM standard (ASTM E872-82, E1755-01), measurement result: skin slag and content of ashes
To be 7.3%.Cassava materials enter can,douche, and the dilute hydrochloric acid that mass concentration is 0.01% is added and is rinsed, the dilute hydrochloric acid of addition
Amount is 20 L/ (kg cassava).Washing time is 24 h, and rinsing temperature is 50 DEG C.After dilute hydrochloric acid rinses, cassava epidermis and tiny
Root is destroyed, and sedimentation removes the ash content rinsed and epidermis other impurities, and sedimentation is using precipitation apparatus common in industry；
Sedimentation except deash and epidermis other impurities after, adding sodium hydroxide is neutralized to neutrality；Drying then grinding screening, granularity 0.2
Drying to constant weight for the tapioca starch of mm, and detecting skin slag and content of ashes as 4.7%(concentrations above is mass concentration).The same terms
Under, 6.5% is improved using the more traditional preprocess method of the alcohol yied after pretreated cassava fermentation of the invention, it can
The significant yield for improving ethyl alcohol.
Claims (2)
1. a kind of preprocess method of fuel ethyl hydrate raw material cassava, it is characterised in that: be by the drying of cassava room temperature, with mass concentration
0.01% ~ 0.08%, the dilute hydrochloric acid of 20 ~ 100L/kg cassava be rinsed 2 ~ for 24 hours, rinsing temperature is 50 ~ 90 DEG C, and sedimentation filtration is removed
Then decontamination is neutralized to neutrality, grinding screening, drying detection with sodium hydroxide.
2. a kind of preprocess method of fuel ethyl hydrate raw material cassava according to claim 1, it is characterised in that: specific steps
It is as follows:
(1) the pre- removal of impurities of drying: cassava is dried under room temperature, diagrid removes packaging bag, the rope made of hemp, biggish grit impurity；
(2) dilute hydrochloric acid is washed: cassava materials enter can,douche, and it is 0.01% ~ 0.08%, 20 ~ 100L/kg cassava that mass concentration, which is added,
Dilute hydrochloric acid be rinsed 2 ~ for 24 hours, rinsing temperature is 50 ~ 90 DEG C；
(3) filter: after dilute hydrochloric acid rinses, cassava epidermis and tiny root are destroyed, and sedimentation removes the ash content and epidermis rinsed
Other impurities, sedimentation is using precipitation apparatus common in industry；
(4) neutralize: sedimentation except deash and epidermis other impurities after, adding sodium hydroxide is neutralized to neutrality；
(5) it dries: the cassava after neutralization is dried；
(6) grinding screening: will except deash, the cassava of impurity grinding, after grinding tapioca starch screening, granularity be 0.2 ~ 2mm it is standby
With；
(7) analyze: drying to constant weight for the tapioca starch that screen size is 0.2 ~ 2mm, then takes tapioca starch sample measurement skin slag and ash
Native content, measuring method use ASTM E872-82, and E1755-01 standard, detects skin slag and content of ashes is lower than ASTM E872-
The tapioca starch of 82, E1755-01 standards is used as alcohol fermentation.
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| CN201510922996.6A CN105463032B (en) | 2015-12-14 | 2015-12-14 | A kind of preprocess method of fuel ethyl hydrate raw material cassava |
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| CN201510922996.6A CN105463032B (en) | 2015-12-14 | 2015-12-14 | A kind of preprocess method of fuel ethyl hydrate raw material cassava |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4474883A (en) * | 1981-03-14 | 1984-10-02 | Mitsui Engineering & Shipbuilding Co., Ltd. | Process for saccharification of rootstocks and subsequent alcohol fermentation |
| CN101487024A (en) * | 2008-01-15 | 2009-07-22 | 中粮集团有限公司 | Method for preparing ethanol from tuber crops raw material |
| CN103981221A (en) * | 2014-05-29 | 2014-08-13 | 湖南尔康制药股份有限公司 | Method for preparing ethanol through cassava chip fermentation |
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2015
- 2015-12-14 CN CN201510922996.6A patent/CN105463032B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4474883A (en) * | 1981-03-14 | 1984-10-02 | Mitsui Engineering & Shipbuilding Co., Ltd. | Process for saccharification of rootstocks and subsequent alcohol fermentation |
| CN101487024A (en) * | 2008-01-15 | 2009-07-22 | 中粮集团有限公司 | Method for preparing ethanol from tuber crops raw material |
| CN103981221A (en) * | 2014-05-29 | 2014-08-13 | 湖南尔康制药股份有限公司 | Method for preparing ethanol through cassava chip fermentation |
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Effective date of registration: 20210716 Address after: 030006 room 1413, 14 / F, block C, clean control innovation base, No. 529, South Central Street, Taiyuan Xuefu Park, comprehensive reform demonstration zone, Taiyuan City, Shanxi Province Patentee after: Shanxi Zhibo Environmental Engineering Co.,Ltd. Address before: 037009 Shanxi province Datong Yuhe East Shanxi Datong University Patentee before: SHANXI DATONG University |
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