CN102703303B - Cellulose embedded particle airborne ethanol solid-state synchronous enzymolysis and fermentation combination system - Google Patents
Cellulose embedded particle airborne ethanol solid-state synchronous enzymolysis and fermentation combination system Download PDFInfo
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- CN102703303B CN102703303B CN201210207405.3A CN201210207405A CN102703303B CN 102703303 B CN102703303 B CN 102703303B CN 201210207405 A CN201210207405 A CN 201210207405A CN 102703303 B CN102703303 B CN 102703303B
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/12—Bioreactors or fermenters specially adapted for specific uses for producing fuels or solvents
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M25/00—Means for supporting, enclosing or fixing the microorganisms, e.g. immunocoatings
- C12M25/16—Particles; Beads; Granular material; Encapsulation
- C12M25/18—Fixed or packed bed
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
Abstract
The invention discloses a cellulose embedded particle airborne ethanol solid-state synchronous enzymolysis and fermentation combination system, which includes a reactor, an ethanol collecting bottle, a yeast liquid storage bottle and a pump, wherein embedded particles are accumulated in the reactor, a liquid distributor is arranged at the inner top part of the reactor, and a gas distributor is arranged at the inner bottom part of the reactor; a gas outlet and a liquid inlet are arranged at the top part of the reactor, and the gas outlet is connected with the ethanol collecting bottle; and further, a liquid outlet and a carrier gas inlet are arranged at the bottom part of the reactor, the liquid outlet of the reactor is connected with the yeast liquid storage bottle, and the yeast liquid is pumped into the reactor by the pump. According to the system, the embedded particles are filled in the reactor, and the yeast liquid is uniformly sprayed onto the surfaces of the embedded particles in a packed bed by means of the liquid distributor, so that uniform biological films are formed and uniform humidity is realized on the surfaces of the embedded particles; and further, the function of the carrier gas is to form the anaerobic environment on one hand, and brings ethanol and the generated metabolic heat outside the reactor on the other hand.
Description
Technical field
The present invention relates to a kind of combined system of producing ethanol, relate in particular to a kind of Mierocrystalline cellulose embedded particles gas and carry the solid-state synchronous enzymatic hydrolysis and fermentation combined system of ethanol.
Background technology
Cellulosic ethanol is as the green renewable resources of one, alternative non-renewable petroleum resources, Application Areas is very extensive, under the condition that world oil shortage of resources, crude oil price constantly rise, environmental stress is day by day serious, has wide market outlook and social benefit.But because cellulosic ethanol production cost is higher, alcohol yied is lower, and production technology is still not mature enough, so in order to improve alcohol yied, reduce costs, studies efficient cellulosic ethanol production technology tool and is of great significance.
The fermentation unit of cellulosic ethanol is mainly divided into packed bed reactor, pellet type reactor, rotating drum type reactor, fluidized-bed reactor.Pellet type reactor well-ventilated, rapid heat dissipation, but cannot stir, labour intensity is applicable to greatly Chinese style and large scale experiment; Rotating drum type reactor can carry out under aseptic condition, slightly mix, can realize automatization, but solid state substrate easily lumps, waste heat be difficult to discharge, also should not with the growth of bacterial classification; The dull heat radiation of fluidized-bed reactor is good, and ventilation is good, but cost is very high; Packed bed reactor cost is low, air temperature and current amount be easy to regulate, but due to inside reactor porosity, be not easy to the circulation of gas, and produce metabolic heat be difficult to discharged in time, thermal diffusivity is very bad.
Summary of the invention
For weak point of the prior art, the object of the present invention is to provide a kind of Mierocrystalline cellulose embedded particles gas of raising ethanol production that can be larger to carry the solid-state synchronous enzymatic hydrolysis and fermentation combined system of ethanol.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
Mierocrystalline cellulose embedded particles gas carries the solid-state synchronous enzymatic hydrolysis and fermentation combined system of ethanol, comprises reactor, ethanol air collector, pump and yeast liquid storage bottle; In described reactor, pile up embedded particles, described embedded particles is to be that 40～80 object stalks are solidified and made by polyvinyl alcohol and sodium alginate by cellulase, cellobiase and particle diameter; Top in described reactor and the top that is positioned at embedded particles arrange liquid distributor, and the bottom in described reactor and the below that is positioned at embedded particles arrange gas distributor; The top of described reactor is provided with air outlet and fluid inlet, and air outlet connects ethanol air collector, and the fluid inlet on reactor communicates with in liquid distributor; The bottom of described reactor is provided with carrier gas inlet mouth and liquid outlet, and carrier gas inlet mouth communicates with in gas distributor; Liquid outlet on reactor connects yeast liquid storage bottle, and the fluid inlet of pump is communicated with in yeast liquid storage bottle, and the liquid outlet of pump is communicated with the fluid inlet on reactor.
As a preferred embodiment of the present invention, also comprise gas meter and humidifier, the inlet mouth of described humidifier connects carrier gas pipe, and the air outlet of humidifier is communicated with the inlet mouth of gas meter, and the air outlet of gas meter is communicated with the carrier gas inlet mouth on reactor.
Compared with prior art, Mierocrystalline cellulose embedded particles gas of the present invention carries the solid-state synchronous enzymatic hydrolysis and fermentation combined system tool of ethanol and has the following advantages:
1, the present invention is just by cylindrical reactor, pump, humidifier, ethanol air collector, and yeast liquid storage bottle and necessary valve and pipeline form, and simple in structure, cost is lower.
2, pass into carrier gas to being filled with in the packed bed of embedded particles, because reactor internal porosity is larger, make carrier gas be easy to ethanol to take away and be also easy to metabolic heat to take away, so this system is without stirring, ventilation is good, dispels the heat also good, and matrix does not exist the phenomenon of caking, air temperature and current amount is all easy to regulate, and yeast is also easy at embedded particles surface filming.
3, this system is also easy to operation, only embedded particles need be packed into reactor, checks whether reactor leaks gas, and then sprays yeast liquid, logical carrier gas.
Brief description of the drawings
Fig. 1 is that Mierocrystalline cellulose embedded particles gas carries the structural representation of the solid-state synchronous enzymatic hydrolysis and fermentation combined system of ethanol.
In accompanying drawing: 1-embedded particles; 2-reactor; 3-liquid distributor; 4-gas distributor; 5-ethanol air collector; 6-gas meter; 7-humidifier; 8-yeast liquid storage bottle; 9-pump.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, Mierocrystalline cellulose embedded particles gas carries the solid-state synchronous enzymatic hydrolysis and fermentation combined system of ethanol, comprise that reactor 2, ethanol air collector 5(also can adopt ethanol air collector), in pump 9(the present embodiment, pump adopts peristaltic pump), yeast liquid storage bottle 8(also can adopt yeast liquid hold-up vessel), gas meter 6 and humidifier 7.The interior accumulation embedded particles 1 of reactor 2, embedded particles 1 is to be that 40～80 object stalks are solidified and made by polyvinyl alcohol and sodium alginate by cellulase, cellobiase and particle diameter.Top in reactor 2 and the top that is positioned at embedded particles 1 arrange liquid distributor 3, and the bottom in reactor 2 and the below that is positioned at embedded particles 1 arrange gas distributor 4.The top of reactor 2 is provided with air outlet and fluid inlet, and air outlet connects ethanol air collector 5, and the fluid inlet on reactor 2 communicates with in liquid distributor 3.The bottom of reactor 2 is provided with carrier gas inlet mouth and liquid outlet, the inlet mouth of humidifier 7 connects carrier gas pipe, the air outlet of humidifier 7 is communicated with the inlet mouth of gas meter 6, the air outlet of gas meter 6 is communicated with the carrier gas inlet mouth on reactor 2, carrier gas inlet mouth communicates with in gas distributor 4, liquid outlet on reactor 2 connects yeast liquid storage bottle 8, and the fluid inlet of pump 9 is communicated with yeast liquid storage bottle 8 is interior, and the liquid outlet of pump 9 is communicated with the fluid inlet on reactor 2.
Use this Mierocrystalline cellulose embedded particles gas to carry method embodiment mono-and the embodiment bis-as described below that the solid-state synchronous enzymatic hydrolysis and fermentation combined system of ethanol is carried out synchronous enzymatic hydrolysis and fermentation.
Embodiment mono-
Using this Mierocrystalline cellulose embedded particles gas to carry the method that the solid-state synchronous enzymatic hydrolysis and fermentation combined system of ethanol carries out synchronous enzymatic hydrolysis and fermentation comprises the steps:
A, making embedded particles: be that 40～80 object stalks are made and become embedded particles by polyvinyl alcohol and sodium alginate by cellulase, cellobiase and xylosidase and particle diameter, the making method of embedded particles is: take a certain amount of sodium alginate and polyvinyl alcohol and put into the beaker heating for dissolving that adds suitable quantity of water, then by its cool to room temperature, add cellulase, cellobiase and xylosidase to mix, then be made into as embedded particles with mould, embedded particles particle diameter is 2～6mm; Again embedded particles is put into and contained 1%～5%CaCl
2saturated boric acid solution in 4～5 DEG C of refrigerators crosslinked 12～24h; Then wash boric acid and the calcium chloride (CaCl on embedded particles surface
2) solution, as for subsequent use.
The system of B, packed bed reactor is installed the filling of (as shown in Figure 1) and embedded particles: the embedded particles making 1 is put into reactor 2 and be piled into packed bed reactor, top in reactor 2 and be positioned at embedded particles 1 above liquid distributor 3 is set, the bottom in reactor 2 and be positioned at embedded particles 1 below gas distributor 4 is set.The top of reactor 2 is provided with air outlet and fluid inlet, air outlet connects air collector 5, in fluid inlet and pump 9(the present embodiment, pump adopts peristaltic pump) connect, be provided with inlet mouth and liquid outlet in the bottom of reactor 2, inlet mouth is connected with gas meter 6 and humidifier 7 successively by tracheae, and humidifier is connected with source of the gas or air pump again; Liquid outlet connects yeast liquid storage bottle 8, and the yeast liquid in yeast liquid storage bottle 8, by peristaltic pump suction liquid distributor 3, after system installs, is hunted leak.
C, the yeast liquid that is 4.5～4.8 by pH value are passed through evenly to spray embedded particles surface after the liquid distributor in reactor, the glucose that embedded particles internal-response generates is under anaerobic reacted and generates ethanol and carbonic acid gas by yeast microbial film, then the yeast liquid flowing through after embedded particles packed bed flows out from the bottom of reactor, is pumped in the liquid distributor in reactor again yeast liquid is recycled by pump.
D, etc. after particle surface biofilm completes, pass into carrier gas (carrier gas by humidifier and gas meter then pass into reactor) in the bottom of reactor, carrier gas is upwards filled bed by embedded particles equably by after gas distributor, take in time the ethanol of generation and carbonic acid gas out of reactor, enter into ethanol receiving flask (tank), also taken away the metabolic heat that reaction produces simultaneously.Whole reactor, in steady temperature, makes saccharification and fermentation all in good temperature controlling range, needs periodically in reactor, to keep the skin wet simultaneously.
Embodiment bis-
Using this Mierocrystalline cellulose embedded particles gas to carry the method that the solid-state synchronous enzymatic hydrolysis and fermentation combined system of ethanol carries out synchronous enzymatic hydrolysis and fermentation comprises the steps:
A, making embedded particles: be that 40～80 object stalks are made and become embedded particles by polyvinyl alcohol and sodium alginate by cellulase, cellobiase and xylosidase and particle diameter, the making method of embedded particles is: take a certain amount of sodium alginate and polyvinyl alcohol and put into the beaker heating for dissolving that adds suitable quantity of water, then by its cool to room temperature, add cellulase, cellobiase and xylosidase to mix, then be made into as embedded particles with mould, embedded particles particle diameter is 2～6mm; Again embedded particles is put into and contained 1%～5%CaCl
2saturated boric acid solution in 4～5 DEG C of refrigerators crosslinked 12～24h; Then wash boric acid and the calcium chloride (CaCl on embedded particles surface
2) solution, as for subsequent use.
The system of B, packed bed reactor is installed the filling of (as shown in Figure 1) and embedded particles: the embedded particles making 1 is put into reactor 2 and be piled into packed bed reactor, top in reactor 2 and be positioned at embedded particles 1 above liquid distributor 3 is set, the bottom in reactor 2 and be positioned at embedded particles 1 below gas distributor 4 is set.The top of reactor 2 is provided with air outlet and fluid inlet, air outlet connects air collector 5, in fluid inlet and pump 9(the present embodiment, pump adopts peristaltic pump) connect, be provided with inlet mouth and liquid outlet in the bottom of reactor 2, inlet mouth is connected with gas meter 6 and humidifier 7 successively by tracheae, and humidifier is connected with source of the gas or air pump again; Liquid outlet connects yeast liquid storage bottle 8, and the yeast liquid in yeast liquid storage bottle 8, by peristaltic pump suction liquid distributor 3, after system installs, is hunted leak.
C, the yeast liquid that is 4.5～4.8 by pH value are passed through evenly to spray embedded particles surface after the liquid distributor in reactor, the glucose that embedded particles internal-response generates is under anaerobic reacted and generates ethanol and carbonic acid gas by yeast microbial film, then the yeast liquid flowing through after embedded particles packed bed flows out from the bottom of reactor, is withdrawn in the liquid distributor in reactor again yeast liquid is recycled by pump.
D, when passing into yeast liquid, pass into carrier gas (carrier gas by humidifier and gas meter then pass into reactor) in the bottom of reactor, carrier gas is upwards filled bed by embedded particles equably by after gas distributor, take in time the ethanol of generation and carbonic acid gas out of reactor, enter into ethanol receiving flask (tank), also taken away the metabolic heat that reaction produces simultaneously.Whole reactor, in steady temperature, makes saccharification and fermentation all in good temperature controlling range.
Therefore, Mierocrystalline cellulose embedded particles gas of the present invention carries the solid-state synchronous enzymatic hydrolysis and fermentation combined system of ethanol, just, by cylindrical reactor, pump, humidifier, ethanol air collector (tank), yeast liquid storage bottle (tank) and necessary valve and pipeline composition, so cost is low; In particles filled bed, pass into carrier gas, because reactor internal porosity is larger, make carrier gas be easy to ethanol to take away and be also easy to metabolic heat to take away, so this system is without stirring, ventilation is good, dispels the heat also good, and matrix does not exist the phenomenon of caking, air temperature and current amount is all easy to regulate, and yeast is also easy in particle surface film forming; This apparatus system is also easy to operation, only needs will be particles filled to enter reactor, then sprays yeast liquid, leads to carrier gas.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from aim and the scope of the technical program, it all should be encompassed in the middle of claim scope of the present invention.
Claims (2)
1. Mierocrystalline cellulose embedded particles gas carries the solid-state synchronous enzymatic hydrolysis and fermentation combined system of ethanol, it is characterized in that: comprise reactor (2), ethanol air collector (5), pump (9) and yeast liquid storage bottle (8); In described reactor (2), pile up embedded particles (1), described embedded particles (1) is to be that 40～80 object straw substrates mix by cellulase, cellobiase, xylosidase and particle diameter, is solidified and is made by polyvinyl alcohol and sodium alginate; Top in described reactor (2) and the top that is positioned at embedded particles (1) arrange liquid distributor (3), and the bottom in described reactor (2) and the below that is positioned at embedded particles (1) arrange gas distributor (4); The top of described reactor (2) is provided with air outlet and fluid inlet, and air outlet connects ethanol air collector (5), and the fluid inlet on reactor (2) communicates with in liquid distributor (3); The bottom of described reactor (2) is provided with carrier gas inlet mouth and liquid outlet, carrier gas inlet mouth communicates with in gas distributor (4), liquid outlet on reactor (2) connects yeast liquid storage bottle (8), the fluid inlet of pump (9) is communicated with in yeast liquid storage bottle (8), and the liquid outlet of pump (9) is communicated with the fluid inlet on reactor (2);
The making method of embedded particles is: take a certain amount of sodium alginate and polyvinyl alcohol and put into the beaker heating for dissolving that adds suitable quantity of water, then by its cool to room temperature, add cellulase, cellobiase and xylosidase to mix, then be made into as embedded particles with mould, embedded particles particle diameter is 2～6mm; Again embedded particles is put into and contained 1%～5%CaCl
2saturated boric acid solution in 4～5 DEG C of refrigerators crosslinked 12～24h; Then wash boric acid and the calcium chloride (CaCl on embedded particles surface
2) solution, as for subsequent use.
2. Mierocrystalline cellulose embedded particles gas according to claim 1 carries the solid-state synchronous enzymatic hydrolysis and fermentation combined system of ethanol, it is characterized in that: also comprise gas meter (6) and humidifier (7), the inlet mouth of described humidifier (7) connects carrier gas pipe, the air outlet of humidifier (7) is communicated with the inlet mouth of gas meter (6), and the air outlet of gas meter (6) is communicated with the carrier gas inlet mouth on reactor (2).
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| CN201210207405.3A CN102703303B (en) | 2012-06-21 | 2012-06-21 | Cellulose embedded particle airborne ethanol solid-state synchronous enzymolysis and fermentation combination system |
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Family Cites Families (1)
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