CN215480900U - Device for enhancing biological fermentation of ultra-high efficiency low pressure gas source micro-interface - Google Patents
Device for enhancing biological fermentation of ultra-high efficiency low pressure gas source micro-interface Download PDFInfo
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Abstract
The utility model provides an ultra-efficient low-pressure gas source micro-interface enhanced biological fermentation device, which comprises a fermentation tank, wherein a composite micro-interface generator is arranged at the top of the fermentation tank, the composite micro-interface generator comprises a pneumatic micro-interface generator and a hydraulic micro-interface generator, and the pneumatic micro-interface generator is connected with the hydraulic micro-interface generator through a connecting channel; the composite micro-interface generator is connected with a CO gas inlet pipeline and is used for crushing and dispersing CO into CO micro-bubbles. According to the utility model, the composite micro-interface generator is arranged at the top of the fermentation tank, so that CO is crushed and dispersed into micron-sized bubbles, the phase boundary mass transfer area between CO and the fermentation raw material is increased, the CO is more easily absorbed by the fermentation raw material, the utilization rate of the fermentation raw material and CO is improved in the production process, the resources are saved, the occupied area is reduced, and the land resources are saved.
Description
Technical Field
The utility model belongs to the technical field of ethanol preparation, and particularly relates to an ultra-efficient low-pressure gas source micro-interface enhanced biological fermentation device.
Background
Ethanol is the fermentation industrial product with longest production history and the largest yield in the world at present. The industrialization of ethanol production begins at the end of the 19 th century and has been in the past for hundreds of years. It is widely used in food, chemical, medicine, dye, national defense and other industries, and is also an important clean resource, namely ethanol. The ethanol is absolute ethanol with the volume fraction of more than 99.5 percent, can be mixed with gasoline according to a certain proportion to reach mixed ethanol gasoline with different octane numbers, is a good component for octane number mixing, can also be combusted and oxygenated to be used as a component of a gasoline oxygenator, and E10 gasoline popularized and used in China is formed by mixing ethanol with the volume fraction of 10 percent and gasoline with the volume fraction of 90 percent, so that the ethanol serving as a clean resource can replace tetraethyl lead to be used as an explosion-proof agent of the gasoline and can also be used for manufacturing ethanol gasoline to be used as automobile fuel, and the pollution to the environment during the combustion of the gasoline is greatly reduced.
Methods for producing ethanol are classified into fermentation methods using plant-based substances as raw materials and chemical synthesis methods using petroleum-based substances as raw materials. The production of ethanol by fermentation is the largest industry in the current biological industry, and mainly utilizes starch raw materials such as corn, rice, sorghum, wheat and potatoes, sugar raw materials such as molasses and cellulose raw materials such as corncobs to prepare the ethanol by fermentation and distillation under the action of microorganisms.
In industrial production, at present, ethanol is mainly produced by adopting a fermentation method in China, namely, the ethanol is basically produced by adopting a starchy raw material, a sugar raw material or a cellulose raw material through a fermentation process. According to statistics, more than 95 percent of factories in China adopt a fermentation method to produce ethanol. With the development and increasing demand of edible and industrial ethanol, especially ethanol industry, the problem of raw material shortage is increasingly prominent, so that the domestic food supply is gradually tightened, the food shortage and the price are rapidly increased, and the national economic stability and the social stability harmony are influenced.
In the center of the prior art, a large amount of resources are consumed in the process of producing ethanol, the utilization rate of fermentation raw materials is low, the waste of the fermentation raw materials is caused, the occupied area of a fermentation tank is large, and land resources are wasted.
In view of the above, the present invention is particularly proposed.
SUMMERY OF THE UTILITY MODEL
The device increases the phase boundary mass transfer area between CO and the fermentation raw material by arranging the composite micro-interface generator at the top of the fermentation tank to break and disperse the CO into micron-sized bubbles, so that the CO is more easily absorbed by the fermentation raw material, the utilization rate of the fermentation raw material and the CO is improved in the production process, the resources are saved, the occupied area is reduced, and the land resources are saved.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
the utility model provides an ultra-efficient low-pressure gas source micro-interface enhanced biological fermentation device, which comprises a fermentation tank, wherein a composite micro-interface generator is arranged at the top of the fermentation tank, the composite micro-interface generator comprises a pneumatic micro-interface generator and a hydraulic micro-interface generator, and the pneumatic micro-interface generator is connected with the hydraulic micro-interface generator through a connecting channel;
the composite micro-interface generator is connected with a CO gas inlet pipeline and is used for crushing and dispersing CO into CO micro-bubbles;
the bottom lateral wall of fermentation cylinder is provided with the feed inlet and is used for making fermentation raw materials enter into in the fermentation cylinder.
In the prior art, when ethanol is produced by CO fermentation, the utilization rate of fermentation raw materials is low, and as the fermentation raw materials are grains, the growth cycle of the grains is longer, the waste is caused by the low utilization rate of the fermentation raw materials, and the domestic grain supply is directly influenced. In addition, in the prior art, a large amount of resources are consumed by the reaction of CO and fermentation raw materials, and the waste is also caused on the resources.
According to the utility model, the composite micro-interface generator is arranged at the top of the fermentation tank, so that CO is crushed and dispersed into micron-sized bubbles, the phase boundary mass transfer area between CO and the fermentation raw material is increased, the CO is more easily absorbed by the fermentation raw material, the utilization rate of the fermentation raw material and CO is improved in the production process, the resources are saved, the occupied area is reduced, and the land resources are saved.
The hydraulic micro-interface generator is arranged right above the pneumatic micro-interface generator, micron-sized bubbles on the pneumatic micro-interface generator can be blocked because most of fermentation raw materials contain crushed slag, when the pneumatic micro-interface generator is blocked, a CO gas inlet pipeline is closed to be connected with a gas valve of the pneumatic micro-interface generator, the pneumatic micro-interface generator is cleaned only by flushing the pneumatic micro-interface generator from top to bottom through the pipeline by gas in the hydraulic micro-interface generator and the fermentation raw materials, and after the blockage problem of the pneumatic micro-interface generator is solved, the gas valve of the CO gas inlet pipeline connected with the pneumatic micro-interface generator can be opened to enable the pneumatic micro-interface generator to work again.
In order to save resources, a gas valve and a circulating pump between the CO gas inlet pipeline and the hydraulic micro-interface generator can be closed or reduced during operation, and reaction materials and gases in the circulating pipeline can penetrate through the hydraulic micro-interface generator under the influence of gravity and negative pressure, so that the resources of CO conveyed to the hydraulic micro-interface generator and the circulating pump are saved.
Preferably, the pneumatic micro-interface generator is arranged right below the hydraulic micro-interface generator. The pneumatic micro-interface generator is arranged right below the hydraulic micro-interface generator, because fermentation raw materials possibly contain fine particles or residues, the pneumatic micro-interface generator can be blocked, when the pneumatic micro-interface generator is blocked, the gas valve connected with the pneumatic micro-interface generator is closed, the fermentation raw materials downward from the hydraulic micro-interface generator right above are used for flushing the inside of the pneumatic micro-interface generator, and the gas valve can be opened after the pneumatic micro-interface generator is flushed, so that the pneumatic micro-interface generator can normally work.
It will be appreciated by those skilled in the art that the micro-interface generator used in the present invention is described in the prior patents of the present inventor, such as the patents of application numbers CN201610641119.6, CN201610641251.7, CN201710766435.0, CN106187660, CN105903425A, CN109437390A, CN205833127U and CN 207581700U. The detailed structure and operation principle of the micro bubble generator (i.e. micro interface generator) is described in detail in the prior patent CN201610641119.6, which describes that "the micro bubble generator comprises a body and a secondary crushing member, wherein the body is provided with a cavity, the body is provided with an inlet communicated with the cavity, the opposite first end and second end of the cavity are both open, and the cross-sectional area of the cavity decreases from the middle of the cavity to the first end and second end of the cavity; the secondary crushing member is disposed at least one of the first end and the second end of the cavity, a portion of the secondary crushing member is disposed within the cavity, and an annular passage is formed between the secondary crushing member and the through holes open at both ends of the cavity. The micron bubble generator also comprises an air inlet pipe and a liquid inlet pipe. "the specific working principle of the structure disclosed in the application document is as follows: liquid enters the micro-bubble generator tangentially through the liquid inlet pipe, and gas is rotated at a super high speed and cut to break gas bubbles into micro-bubbles at a micron level, so that the mass transfer area between a liquid phase and a gas phase is increased, and the micro-bubble generator in the patent belongs to a pneumatic micro-interface generator.
In addition, the first patent 201610641251.7 describes that the primary bubble breaker has a circulation liquid inlet, a circulation gas inlet and a gas-liquid mixture outlet, and the secondary bubble breaker communicates the feed inlet with the gas-liquid mixture outlet, which indicates that the bubble breakers all need to be mixed with gas and liquid, and in addition, as can be seen from the following drawings, the primary bubble breaker mainly uses the circulation liquid as power, so that the primary bubble breaker belongs to a hydraulic micro-interface generator, and the secondary bubble breaker simultaneously introduces the gas-liquid mixture into an elliptical rotating ball for rotation, thereby realizing bubble breaking in the rotating process, so that the secondary bubble breaker actually belongs to a gas-liquid linkage micro-interface generator. In fact, the micro-interface generator is a specific form of the micro-interface generator, whether it is a hydraulic micro-interface generator or a gas-liquid linkage micro-interface generator, however, the micro-interface generator adopted in the present invention is not limited to the above forms, and the specific structure of the bubble breaker described in the prior patent is only one of the forms that the micro-interface generator of the present invention can adopt.
Furthermore, the prior patent 201710766435.0 states that the principle of the bubble breaker is that high-speed jet flows are used to achieve mutual collision of gases, and also states that the bubble breaker can be used in a micro-interface strengthening reactor to verify the correlation between the bubble breaker and the micro-interface generator; moreover, in the prior patent CN106187660, there is a related description on the specific structure of the bubble breaker, see paragraphs [0031] to [0041] in the specification, and the accompanying drawings, which illustrate the specific working principle of the bubble breaker S-2 in detail, the top of the bubble breaker is a liquid phase inlet, and the side of the bubble breaker is a gas phase inlet, and the liquid phase coming from the top provides the entrainment power, so as to achieve the effect of breaking into ultra-fine bubbles, and in the accompanying drawings, the bubble breaker is also seen to be of a tapered structure, and the diameter of the upper part is larger than that of the lower part, and also for better providing the entrainment power for the liquid phase.
Since the micro-interface generator was just developed in the early stage of the prior patent application, the micro-interface generator was named as a micro-bubble generator (CN201610641119.6), a bubble breaker (201710766435.0) and the like in the early stage, and is named as a micro-interface generator in the later stage along with the continuous technical improvement, and the micro-interface generator in the present invention is equivalent to the micro-bubble generator, the bubble breaker and the like in the prior art, and has different names. In summary, the micro-interface generator of the present invention belongs to the prior art.
Preferably, the top of fermentation cylinder is provided with gas recovery pipeline, gas recovery pipeline's one end is connected the fermentation cylinder top, and the other end is connected in the formula micro-interface generator that surges.
Preferably, the pneumatic micro-interface generator is connected with a conveying pipeline for conveying the CO micro-bubbles to the bottom of the fermentation tank.
Preferably, the bottom end of the conveying pipeline is provided with a shunt pipe for uniformly dispersing CO into the interior of the fermentation tank.
Preferably, a gas valve is arranged between the CO gas inlet pipeline and the hydraulic micro-interface generator and between the CO gas inlet pipeline and the pneumatic micro-interface generator.
Preferably, the inside of fermentation cylinder is provided with the sieve that the multilayer was straggly to be set up and is used for slowing down fermentation raw materials velocity of flow and microbubble rising speed.
Preferably, the top end of the fermentation tank is provided with a tail gas outlet for discharging unreacted gas, the side wall of the fermentation tank is provided with a discharge hole, and the bottom end of the fermentation tank is provided with a waste outlet.
Compared with the prior art, the utility model has the beneficial effects that:
(1) according to the utility model, the composite micro-interface generator is arranged at the top of the fermentation tank, so that CO is crushed and dispersed into micron-sized bubbles, the phase boundary mass transfer area between CO and the fermentation raw material is increased, the CO is more easily absorbed by the fermentation raw material, the utilization rate of the fermentation raw material and CO is improved in the production process, the resources are saved, the occupied area is reduced, and the land resources are saved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of an ultra-efficient low-pressure gas source micro-interface enhanced biological fermentation apparatus according to an embodiment of the present invention.
Wherein:
10-a fermentation tank; 101-a gas recovery pipeline;
102-a screen deck; 104-discharge hole;
103-tail gas outlet; 106-a delivery conduit;
105-a waste outlet; 11-CO inlet duct;
1061-shunt tube; 20-composite micro-interface generator;
12-a feed inlet; 202-a pneumatic micro-interface generator;
201-hydraulic micro-interface generator; 21-a circulating pump;
203-a communication pipe; 22-gas valve.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and the detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to more clearly illustrate the technical solution of the present invention, the following description is made in the form of specific embodiments.
Examples
Fig. 1 is a schematic structural diagram of an ultra-efficient low-pressure gas source micro-interface enhanced biological fermentation apparatus according to an embodiment of the present invention. The composite micro-interface generator 20 is arranged at the top of the fermentation tank 10, the composite micro-interface generator 20 comprises a hydraulic micro-interface generator 201 and a pneumatic micro-interface generator 202, the hydraulic micro-interface generator 201 is arranged outside the top of the fermentation tank 10, the pneumatic micro-interface generator 202 is arranged on the inner side of the top of the fermentation tank 10, the pneumatic micro-interface generator 202 is connected with the hydraulic micro-interface generator 201 through a communication pipeline 203, and the hydraulic micro-interface generator 201 is positioned right above the pneumatic micro-interface generator 202. The reason why the pneumatic micro-interface generator 202 is arranged right below the hydraulic micro-interface generator 201 is that the fermentation raw material may contain fine particles or residues and block the pneumatic micro-interface generator 202, when the pneumatic micro-interface generator 202 is blocked, the gas valve 22 connected with the pneumatic micro-interface generator 202 is closed, the fermentation raw material downwards from the hydraulic micro-interface generator 201 right above is used for flushing the inside of the pneumatic micro-interface generator 202, and after flushing, the pneumatic micro-interface generator 202 is not blocked any more and the gas valve 22 can be opened to work normally.
The bottom end of the pneumatic micro-interface generator 202 is connected with the conveying pipeline 106 for conveying the scattered and broken CO to the bottom of the fermentation tank 10, so that the retention time of the CO in the fermentation tank 10 can be increased, the contact time of the CO and the fermentation raw material is prolonged, and the utilization rate of the fermentation raw material and the CO is improved. The bottom end of the conveying pipeline 106 is further provided with a shunt pipe 1061 for uniformly dispersing CO into the fermentation tank 10, so as to prevent the CO from being uniformly dispersed to one side of the fermentation tank 10.
The left side of the fermentation tank 10 is provided with the circulating pump 21, and the incompletely fermented fermentation raw materials are returned to the hydraulic micro-interface generator 201 through the circulating pump 21, so that the utilization rate is improved.
And two CO gas inlet pipelines are provided, wherein one pipeline is communicated with the hydraulic micro-interface generator 201, the other pipeline is communicated with the pneumatic micro-interface generator 202, and gas which is communicated with the hydraulic micro-interface generator 201 from the gas recovery pipeline 101 through the top end of the fermentation tank 10 due to negative pressure influence is also communicated into the hydraulic micro-interface generator 201 from the hydraulic micro-interface generator 201.
The two CO gas inlet pipelines are respectively provided with a gas valve 22, the gas valves 22 can control the amount of CO entering the hydraulic micro-interface generator 201 and the pneumatic micro-interface generator 202, when the pneumatic micro-interface generator 202 is used as a main working micro-interface generator, the gas valve 22 of the CO gas inlet pipeline connected with the pneumatic micro-interface generator 202 is completely opened, and the gas valve 22 of the CO gas inlet pipeline connected with the hydraulic micro-interface generator 201 is properly closed or reduced. Therefore, certain resources can be saved, when the pneumatic micro-interface generator 202 is blocked, the gas valve 22 connected with the pneumatic micro-interface generator 202 is closed, the gas valve 22 connected with the hydraulic micro-interface generator 201 is completely opened, and the pneumatic micro-interface generator 202 is flushed and cleaned by utilizing the impact flow of the hydraulic micro-interface generator 201 from top to bottom.
The inside of the fermentation tank 10 is provided with a plurality of layers of sieve plates 102 which are arranged in a staggered way to slow down the flow rate of the fermentation raw materials and the ascending speed of micro-bubbles.
The top of fermentation cylinder 10 is provided with tail gas outlet 103 and gas recovery pipeline 101, and tail gas outlet 103 and gas recovery pipeline 101 all utilize the negative pressure principle with gaseous exhaust, and tail gas outlet 103 directly discharges to outdoor, and gas recovery pipeline 101 lets in hydraulic type micro-interface generator 201, and the reuse is gaseous, has improved gaseous utilization ratio.
Comparative example 1
Comparative example 1 the same apparatus and method as in example 1 was used except that there was no return channel and composite micro-interfacial generator in comparative example 1.
Comparative example 2
Comparative example 2 the same apparatus and method as in example 1 were used except that the composite micro-interfacial generator of comparative example 2 was replaced with a conventional micro-interfacial generator.
The reaction materials and processes of example 1, comparative example 1 and comparative example 2 are the same, firstly, 10kg of straw is selected as the fermentation raw material, dried in the sun, cut and crushed, and soaked in 100ml of 0.01mol/L sulfuric acid solution for 24 hours at the temperature of 40 ℃, calcium carbonate is added, and the pH value is adjusted to be 5.2.
During the fermentation, Clostridium is selected for fermentation, and the Clostridium is added to the biological membrane on the sieve plate for fermentation, wherein the fermentation temperature is adjusted to 38 ℃, the pH value is adjusted to 6.2, and the viable count of the Clostridium is 0.4 multiplied by 109CFU/g. The fermentation is suitable for clostridium fermentation for 2 days.
The ethanol produced in example 1 was compared with that produced in comparative examples 1 and 2 to obtain the following data:
| amount of ethanol produced kg | |
| Example 1 | 4.5 |
| Comparative example 1 | 3.3 |
| Comparative example 2 | 2.8 |
Comparative example 1 in the absence of a return channel and a gas-liquid linkage type micro-interface generator, the amount of ethanol produced was reduced, i.e., the conversion rate was reduced; comparative example 2 has a backflow channel, but the composite micro-interface generator is changed into a common micro-interface generator, and the micro-interface generator of comparative example 2 is blocked during operation, so that the amount of ethanol generated is reduced, and the conversion rate is reduced. Therefore, the conclusion can be drawn that the fermentation material which is not completely reacted in the fermentation tank flows back to the bottom of the fermentation tank by arranging the backflow channel at the top of the side wall of the fermentation tank, so that the utilization rate of the fermentation raw material is improved, and the waste of the fermentation raw material is avoided; through being provided with gas-liquid linkage formula micro-interface unit in return channel inside, break the dispersion with CO and become micron order bubble, increase the phase boundary mass transfer area between CO and the fermentation raw materials for CO is more easily absorbed by the fermentation raw materials, has practiced thrift the resource in process of production.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The device for enhancing the biological fermentation of the ultra-high efficiency low pressure gas source micro-interface is characterized by comprising a fermentation tank, wherein the top of the fermentation tank is provided with a composite micro-interface generator, the composite micro-interface generator comprises a pneumatic micro-interface generator and a hydraulic micro-interface generator, and the pneumatic micro-interface generator is connected with the hydraulic micro-interface generator through a connecting channel;
the composite micro-interface generator is connected with a CO gas inlet pipeline and is used for crushing and dispersing CO into CO micro-bubbles;
the bottom lateral wall of fermentation cylinder is provided with the feed inlet and is used for making fermentation raw materials enter into in the fermentation cylinder.
2. The apparatus of claim 1, wherein the pneumatic micro-interface generator is disposed directly below the hydraulic micro-interface generator.
3. The apparatus of claim 1, wherein the top end of the fermentation tank is provided with a gas recovery pipeline, one end of the gas recovery pipeline is connected to the top end of the fermentation tank, and the other end of the gas recovery pipeline is connected to the hydraulic micro-interface generator.
4. The apparatus of claim 1, wherein the pneumatic micro-interface generator is connected with a delivery pipe for delivering CO micro-bubbles to the bottom of the fermentor.
5. The apparatus according to claim 4, characterized in that the bottom end of the transfer pipe is provided with a shunt tube for evenly dispersing CO to the interior of the fermenter.
6. The apparatus of claim 1, wherein a gas valve is disposed between the CO inlet conduit and the hydraulic and pneumatic micro-interface generators.
7. The apparatus of claim 1, wherein the inside of the fermentation tank is provided with a plurality of layers of sieve plates which are arranged in a staggered manner to slow down the flow rate of the fermentation raw material and the ascending speed of the micro bubbles.
8. The apparatus of claim 1, wherein the top end of the fermentation tank is provided with a tail gas outlet for discharging the gas which is not completely reacted, the side wall of the fermentation tank is provided with a discharge hole, and the bottom end of the fermentation tank is provided with a waste material outlet.
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| CN202121593868.9U CN215480900U (en) | 2021-07-14 | 2021-07-14 | Device for enhancing biological fermentation of ultra-high efficiency low pressure gas source micro-interface |
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