CN105480976A - Method for eliminating unstabilizing factors of edible carbon dioxide produced during batch fermentation of cassava - Google Patents
Method for eliminating unstabilizing factors of edible carbon dioxide produced during batch fermentation of cassava Download PDFInfo
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- CN105480976A CN105480976A CN201510949122.XA CN201510949122A CN105480976A CN 105480976 A CN105480976 A CN 105480976A CN 201510949122 A CN201510949122 A CN 201510949122A CN 105480976 A CN105480976 A CN 105480976A
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- Prior art keywords
- carbon dioxide
- cassava
- batch fermentation
- carbonic acid
- acid gas
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0027—Oxides of carbon, e.g. CO2
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2210/00—Purification or separation of specific gases
- C01B2210/0043—Impurity removed
- C01B2210/0062—Water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2210/00—Processes characterised by the type or other details of the feed stream
- F25J2210/80—Carbon dioxide
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a method for eliminating unstabilizing factors of edible carbon dioxide produced during batch fermentation of cassava. The problems that carbon dioxide raw materials are fluctuated in pressure and high in impurity content in the process of batch fermentation of cassava are solved. Water washing, primary dehydration, pressure stabilization treatment, secondary dehydration, purification treatment and condensation measures are performed on carbon dioxide produced through batch fermentation, water and impurities in the carbon dioxide are removed, unstabilizing factors in the product and the process of obtaining the carbon dioxide through batch fermentation of cassava are eliminated, and pure carbon dioxide is obtained and becomes liquid carbon dioxide after being condensed. The pure liquid carbon dioxide meeting the edible standard is obtained in a high-yield mode through batch fermentation of cassava, the problem that a harmful effect is caused to the environment by carbon dioxide in a cassava batch fermentation method is solved, the edible carbon dioxide is obtained at a low cost, and waste gas produced in the process of batch fermentation of cassava is recycled.
Description
Technical field
The present invention relates to the method eliminating the carbonic acid gas labile factor that cassava batch fermentation is produced, belong to cassava fermentation for edible CO 2 technical field.
Background technology
In cassava alcohol industry, fermenting process can produce great amount of carbon dioxide gas, if directly discharged, carbon dioxide content in air will be caused to get more and more, form Greenhouse effect, so now large and medium-sized enterprise all can carry out collection and purification to carbonic acid gas, then produce the carbon dioxide product of gaseous state, liquid state, the different size such as solid-state.Reclaim the traditional technology of cassava fermentation gas production food grade liquid carbon dioxide, mainly through continuously fermenting or semicontinuous fermentation realization, because continuously ferment or semicontinuous fermentation carbon dioxide in process bleed pressure relatively stable, the impure index of carbonic acid gas is also relatively stable, is easy to removing.But, continuously ferment and very easily cause systemic microbiological contamination, and microbiological contamination Consequential Loss is larger, therefore present cassava alcohol production fermenting process mainstay is batch fermentation, but batch fermentation also exists the factors of instability equally, these factors comprise the carbon dioxide gas pressure produced during the course, foreign matter content is at earlier fermentation, lord ferment period and secondary fermentation phase fluctuate very large, the situation of carbon dioxide product index extremely unstable, so still have many difficult problems urgently to be resolved hurrily by batch fermentation in industry, only have and eliminate these factors of instability, just produce stay-in-grade satisfactory edible liquid carbon dioxide by batch fermentation.
Summary of the invention
The object of the present invention is to provide a kind of method eliminating the carbonic acid gas labile factor that cassava batch fermentation is produced, CO 2 raw material gas pressure surge existing in solution cassava Batch fermentation process, the problem that foreign matter content is many, overcome the defect existing for carbonic acid gas that traditional method is produced from cassava batch fermentation, for non-applying of grain batch fermentation production food grade Liquid carbon dioxide technology provides technical support.
To achieve these goals, this invention takes such technical measures, eliminate the method for the carbonic acid gas labile factor that cassava batch fermentation is produced, comprise following concrete technological step:
(1) carbon dioxide will produced after cassava batch fermentation, after carbonic acid gas washing tower, utilize water to remove major part impurity soluble in water, enter the carbonic acid gas tolerance of washing tower and the throughput ratio of washing water is 100:1 cube/cube, obtain moisture carbonic acid gas;
(2) moisture carbonic acid gas is by elementary automatic steam trap, carries out elementary dewatering, sloughs the water of condensation carried secretly in carbon dioxide;
(3) remove the carbonic acid gas of water of condensation through voltage stabilizing cabinet, absorb the pressure change of fermenting process carbon dioxide, make carbonic acid gas oxysome pressure-stabilisation at 2-3KPa;
(4) pressure-stabilisation is passed through secondary automatic steam trap at the carbon dioxide of 2-3KPa, slough the water of condensation in carbon dioxide further;
(5) carbon dioxide removing water of condensation enters purifying carbon dioxide device and carries out purification and impurity removal;
(6) condensation under cooling environment of the carbon dioxide after purification and impurity removal, gaseous carbon dioxide transforms into liquid carbon dioxide product.
Take the present invention of above-mentioned measure, to the carbon dioxide by batch fermentation output, have passed through water washing, primary dewatering, voltage stabilizing process, secondary dehydration, after the measure of purifying treatment and condensation, by the moisture content in carbonic acid gas, Impurity removal, eliminate cassava batch fermentation and obtain labile factor in the process of carbonic acid gas and product, obtain pure carbon dioxide, liquid carbon dioxide is become after condensation, adopt method of the present invention, obtain pure liquid state with can utilizing cassava batch fermentation higher yields and meet the carbonic acid gas of food sanitation standard, improve the quality of the carbonic acid gas that cassava batch fermentation obtains, solve relevant carbonic acid gas in cassava batch fermentation field and dysgenic problem is caused to environment, food grade carbon dioxide product can be obtained at low cost again, the waste gas that cassava Batch fermentation process is produced " is turned waste into wealth ".
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
It is a kind of known technology that cassava batch fermentation produces alcohol; a large amount of titanium dioxide gas can be produced after batch fermentation; these carbon dioxides contain impurity; quality is too low, and the existence of carbon dioxide can produce the fluctuation of air pressure, impacts carbon dioxide generator; there is destructive effect; and the carbonic acid gas of discharging can impact environment, welding is the factor affecting environment protection.The present invention is exactly the process to the carbonic acid gas produced after cassava batch fermentation, and be a processed continuously process, described method realizes in corresponding equipment.
In the present invention, [l1].
[l2] nitrogenous source, therefore, [l3].Particularly, produce in the process of ethanol at cassava batch fermentation, owing to there is larger difference at earlier fermentation, lord ferment period and the material concentration in fermentation later stage and the activity of yeast saccharomyces cerevisiae, make foreign matter content in the gas produced when earlier fermentation and fermentation later stage higher.Because the difference of fermenting process, make gaseous tension unstable and fluctuate, these fluctuations can impact production facility and affect the life-span of equipment, and the present invention is by after rational measure, eliminate the factors of instability, control the purity of the carbonic acid gas that cassava fermentation produces preferably, the carbon dioxide product of food grade can be obtained.
In the present invention, after taking out from the gas in cassava fermentor tank, washing tower is adopted to wash.Enough produce the carbon dioxide product of food grade to obtain purity, in the present invention, the gas after washing is carried out processed respectively, and described dehydration comprises the primary dewatering and secondary dehydration that carry out successively.The present invention dewaters in elementary trap and secondary trap.
In the present invention, because cassava batch fermentation has larger difference at earlier fermentation, lord ferment period and the attenuation degree in fermentation later stage, the pressure of the gas of generation is caused to there is fluctuation thus, and the problem that such fluctuation can cause carbon dioxide compressor load impact excessive, make to be difficult to compared with collection and confinement of gases to be prepared into the carbon dioxide product of food grade.In order to solve this problem, the pressure of the present invention to gas regulates.Gaseous tension is adjusted to 2-3kPa.Conveniently operate, the present invention is regulated by the pressure of voltage stabilizing cabinet to gas, makes the gaseous tension of whole fermenting process steady, and the carbonic acid gas being particularly conducive to the gained that to be fermented by cassava is prepared into the carbon dioxide product of food grade.
In the present invention, in order to obtain pure carbonic acid gas, the carbonic acid gas through above-mentioned process is carried out purifying treatment, purifying treatment is carried out in purifying carbon dioxide device.Carbonic acid gas after purification carries out condensation process again in carbon dioxide condensing device.Liquid edible grade carbon-dioxide can be obtained.
Embodiment 1
The present embodiment eliminates the method for the carbonic acid gas labile factor that cassava batch fermentation is produced for illustration of the present invention.
Get new fresh cassava raw material carry out pulverizing water distribution make concentration be powder slurry, and routinely after batch fermentation technique ferment, the fermented bacterium that period adopts does not affect of the present invention carrying out, a large amount of gas can be produced after fermentation, collect gas by washing in pipeline feeding carbonic acid gas washing tower, the present embodiment adopts
The technical indicator of carbonic acid gas washing tower be; Washing tower diameter DN800/1600, height H=15183, tower inner stuffing uses alcohol filler special, model: ETH-3Y, material: 0Cr18Ni9, column internals model: INT-SS, material: 0Cr18Ni9.The throughput ratio of the carbonic acid gas tolerance and washing water that enter washing tower during washing is 100:1 cube/cube, from washing tower out after moisture gas enter elementary trap by pipeline and dewater, the elementary trap technical indicator that the present embodiment adopts is: utilize fluid-tight principle, CO2 gas is sealed up for safekeeping, condensed water is due to gravity outer row automatically, trap volume 0.0628 cubic metre is high 0.5 meter.Gas after dehydration is entered voltage stabilizing cabinet by pipeline, the present embodiment voltage stabilizing cabinet: purchased from Chengdu Wan Bai Environmental Protection Technology Co., Ltd, independent two film gas storage holder: useful volume:
1000m3, node diameter:
12m, highly: 10M, design discharge: carry out gas
1062m3/H, uses gas
1062m3/H, operating pressure: normal
2kPa is the highest
2.5kPa is minimum
1.7kPa, electrical arrangement: AC three-phase 380V50Hz30A, pressure is regulated to be 2-2.5kPa in voltage stabilizing cabinet, pressure adjusting is carried out to the gas entering voltage stabilizing cabinet, obtain the gas of pressure-stabilisation, gas after voltage stabilizing is sent into secondary trap by pipeline dewater, secondary trap and elementary trap same specification model, gas after dewatering is sent in purifying carbon dioxide device by pipeline and purifies, described purifying carbon dioxide device is by the complete set design of union company of Denmark, purified gas sends into condensation in carbon dioxide condenser by pipeline, described titanium dioxide condensing works is by the complete set design of union company of Denmark.After condensation, obtain food grade liquid carbon dioxide product, the purity of carbonic acid gas is 99.9% after measured.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (1)
1. eliminate the method for the carbonic acid gas labile factor that cassava batch fermentation is produced, comprise following concrete technological step:
(1) carbon dioxide will produced after cassava batch fermentation, after carbonic acid gas washing tower, utilize water to remove major part impurity soluble in water, enter the carbonic acid gas tolerance of washing tower and the throughput ratio of washing water is 100:1 cube/cube, obtain moisture carbonic acid gas;
(2) moisture carbonic acid gas is by elementary automatic steam trap, carries out elementary dewatering, sloughs the water of condensation carried secretly in carbon dioxide;
(3) remove the carbonic acid gas of water of condensation through voltage stabilizing cabinet, absorb the pressure change of fermenting process carbon dioxide, make carbonic acid gas oxysome pressure-stabilisation at 2-3KPa;
(4) pressure-stabilisation is passed through secondary automatic steam trap at the carbon dioxide of 2-3KPa, slough the water of condensation in carbon dioxide further;
(5) carbon dioxide removing water of condensation enters purifying carbon dioxide device and carries out purification and impurity removal;
(6) condensation under cooling environment of the carbon dioxide after purification and impurity removal, gaseous carbon dioxide transforms into liquid carbon dioxide product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510949122.XA CN105480976A (en) | 2015-12-18 | 2015-12-18 | Method for eliminating unstabilizing factors of edible carbon dioxide produced during batch fermentation of cassava |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510949122.XA CN105480976A (en) | 2015-12-18 | 2015-12-18 | Method for eliminating unstabilizing factors of edible carbon dioxide produced during batch fermentation of cassava |
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| Publication Number | Publication Date |
|---|---|
| CN105480976A true CN105480976A (en) | 2016-04-13 |
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| CN201510949122.XA Pending CN105480976A (en) | 2015-12-18 | 2015-12-18 | Method for eliminating unstabilizing factors of edible carbon dioxide produced during batch fermentation of cassava |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201002975Y (en) * | 2007-02-02 | 2008-01-09 | 刘金治 | Carbon dioxide recovering apparatus |
| CN102198939A (en) * | 2010-03-23 | 2011-09-28 | 江都市显业集团有限公司 | Carbon dioxide recovery system |
| CN202575992U (en) * | 2012-04-01 | 2012-12-05 | 南通宏仁气体有限公司 | Carbon dioxide recovery device |
| CN102851163A (en) * | 2012-09-14 | 2013-01-02 | 大连格兰清水环境工程有限公司 | Recovery and utilization process of carbon dioxide in beer production |
| CN203998965U (en) * | 2014-08-15 | 2014-12-10 | 江苏花厅生物科技有限公司 | Novel by-product food-class liquid CO 2 production equipment |
| CN104556035A (en) * | 2015-01-19 | 2015-04-29 | 宁波华东二氧化碳有限责任公司 | Preparation method and preparation device of food-grade high-purity liquid carbon dioxide |
-
2015
- 2015-12-18 CN CN201510949122.XA patent/CN105480976A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201002975Y (en) * | 2007-02-02 | 2008-01-09 | 刘金治 | Carbon dioxide recovering apparatus |
| CN102198939A (en) * | 2010-03-23 | 2011-09-28 | 江都市显业集团有限公司 | Carbon dioxide recovery system |
| CN202575992U (en) * | 2012-04-01 | 2012-12-05 | 南通宏仁气体有限公司 | Carbon dioxide recovery device |
| CN102851163A (en) * | 2012-09-14 | 2013-01-02 | 大连格兰清水环境工程有限公司 | Recovery and utilization process of carbon dioxide in beer production |
| CN203998965U (en) * | 2014-08-15 | 2014-12-10 | 江苏花厅生物科技有限公司 | Novel by-product food-class liquid CO 2 production equipment |
| CN104556035A (en) * | 2015-01-19 | 2015-04-29 | 宁波华东二氧化碳有限责任公司 | Preparation method and preparation device of food-grade high-purity liquid carbon dioxide |
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Application publication date: 20160413 |
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