CN107674887A - The method and apparatus of the integrated dilute ammonia pretreatment of high temperature and anaerobic fermentation production biogas - Google Patents
The method and apparatus of the integrated dilute ammonia pretreatment of high temperature and anaerobic fermentation production biogas Download PDFInfo
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Abstract
The invention discloses the method for the dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas, including：A period of time is soaked Step 1: lignocellulosic material is placed in liquor ammoniae dilutus at 55~120 DEG C of temperature, afterwards isolated first solid and the first liquid；With Step 2: the first solid is fermented to produce biogas under anaerobic condition.The invention also discloses the dilute ammonia pretreatment of integrated high temperature and the device of anaerobic fermentation production biogas, including：Preatreating reactors a, there is provided enclosed environment and the environment that temperature is 55~120 DEG C, accommodate liquor ammoniae dilutus；Anaerobic reactor, there is provided anaerobic environment, one end operationally connects or disconnected with one end of preatreating reactors, for producing biogas；With the first liquid-solid separator, it is arranged in preatreating reactors.The present invention reduces pretreatment and anaerobic fermentation time using higher temperature conditions, improves the degradation efficiency of pretreatment and the efficiency of anaerobic fermentation production biogas by the synergy of hot and dilute ammonia.
Description
Technical field
The invention belongs to bioenergy utilization and field of environment protection, more particularly to a kind of dilute ammonia of integrated high temperature to locate in advance
The method and apparatus of reason and anaerobic fermentation production biogas.
Background technology
As one of large agricultural country, China produces substantial amounts of lignocellulose discarded object every year.For example, all kinds of stalks are total
Yield almost accounts for 1/3rd of world's stalk total amount about at 700,000,000 tons or so, wherein 20% stalk does not obtain effective profit
With.Particularly in the rural area of developed area and Suburb Areas of Big Cities, because fuel structure changes and chemical fertilizer widely uses,
Stalk surplus is even as high as 70% -80%, and these stalks are finally incinerated mostly, so as to cause seriously to pollute, such as on periphery
Big city produces haze.
Anaerobic fermentation is widely paid close attention to and answered as one of mode that can effectively handle organic waste
With.This mode effectively can convert organic waste green bioenergy-biogas.Biogas can be with by purification
Instead of natural gas, it is referred to as bio-natural gas.But directly using agriculture lignocellulose discarded object as anaerobic fermentation
Raw material also has its unfavorable conditions.Lignocellulose raw material contains the more stable avicel cellulose and lignin of molecular structure,
Particularly lignin is wrapped in internal degradable composition as wall, and this feed degradation ability of anaerobe is weak, finally leads
Cause gas production few, input-output efficiency difference etc., so as to limit anaerobic fermentation technology significantly in agriculture lignocellulose discarded object
On industrial applications.
In order to increase the yield of biogas, many preconditioning techniques be used to destroy in agriculture lignocellulose discarded object
More stable valence bond structure.Preprocess method mainly has the methods of physics, chemistry and biology.Wherein, more commonly used is hydrogen
Sodium oxide molybdena pre-processes, but due to being highly basic, has pollution environment, etching apparatus, and sodium ion has suppression to anaerobic digester system
The shortcomings of, affect further applying for the processing method.Ammoniacal liquor or ammonium hydroxide are used as relatively mild alkali, progressively someone
To substitute naoh treatment lignocellulose raw material.The technology can have the characteristic of aqueous slkali such as to open cellulose, half
Ester bond between cellulose and lignin, cellulose and a part of lignin and silicate are dissolved, be cellulose expansion, so as to just
In the progress of enzyme hydrolysis, digestibility is improved；And can provides nitrogen source needed for anaerobe, neutralizes potential acid, plays buffering and makees
With.The raw materials such as stalk are pre-processed using the ammoniacal liquor (10-30%wt) of high concentration mostly at present, in order to avoid ammonia is to micro- life
The inhibitory action of thing, it must then wash, be dried to obtain solid particle, for alcohol production or anaerobic fermentation.So doing to increase
Add many processes, lose many organic matters, so as to increase cost.There is researcher to use and compare low concentration ammonia water pretreatment stalk,
Biogas output is improved, such as patent CN102604998B, CN102604997A, CN104593429A and CN102827879B, so
It can be directly added into anaerobic reactor and be fermented after pre-processing, produce biogas.But these patented technologies be all
Carried out under the conditions of normal temperature (25-37 DEG C), pretreatment time length, the anaerobic fermentation time is also grown, and efficiency needs further to be improved.
The content of the invention
It is an object of the invention to solve at least the above and/or defect, and provide at least will be described later it is excellent
Point.
It is a still further object of the present invention to provide the side of a kind of dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas
Method, the present invention integrate pretreatment with anaerobic fermentation, so as to solve natural pond by using dilute ammonia and the synergy of heat
The problem of cost is high, efficiency is low in gas production.
A further object of the present invention is to provide the dress of a kind of dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas
Put.
Therefore, technical scheme provided by the invention is：
The method of a kind of dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas, comprises the following steps：
A period of time is soaked Step 1: lignocellulosic material is placed in liquor ammoniae dilutus at 55~120 DEG C of temperature, it
First time separation of solid and liquid is carried out afterwards obtains the first solid and the first liquid；With
Step 2: the first solid is fermented to produce biogas under anaerobic condition, after producing biogas afterwards
Material carries out second of separation of solid and liquid and obtains second liquid.
Preferably, in the method for the described dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas, in step 1,
The concentration of the liquor ammoniae dilutus is 0.1% -2% (w/w), and the length of the lignocellulosic material is no longer than 5cm, described one section
Time is 2h~72h.
Preferably, in the method for the described dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas, in step 2,
First solid is fermented under anaerobic condition to be included with producing the specific method of biogas：
First solid and seed sludge are well mixed, are placed under anaerobic condition, keeps the content of solid content to exist
10%~20% (w/w), fermented 13~30 days at 50~60 DEG C of temperature.
Preferably, in the method for the described dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas, in step 2,
Carry out in the fermentation, be also stirred, every 12 hour stirrings once, each mixing time duration is 1-6h.
Preferably, in the method for the described dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas, described first
The whole of liquid and a part for the liquid are recycled, and for reconfiguring liquor ammoniae dilutus, the second liquid remains
Remaining part point is recycled in the fermentation.
A kind of device of the dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas, including：
Preatreating reactors, it provides an enclosed environment, and a temperature is 55~120 DEG C of environment, and the pretreatment is anti-
Answer and liquor ammoniae dilutus is accommodated in device；
Anaerobic reactor, it provides an anaerobic environment, one end of the anaerobic reactor and the preatreating reactors
One end operationally connects or disconnected, and the anaerobic reactor is used to produce biogas；With
First liquid-solid separator, it is arranged in the preatreating reactors.
Preferably, the device of the described dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas, in addition to：
Second liquid-solid separator, it is arranged between the anaerobic reactor and the preatreating reactors, is detested with described
The other end of oxygen reactor and the other end of the preatreating reactors are each respectively communicated with.
Preferably, the device of the described dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas, in addition to：
Dividing plate, it is arranged between one end of the anaerobic reactor and one end of the preatreating reactors, for making
The anaerobic reactor is connected or disconnected with the preatreating reactors；
First surge tank, it is arranged on below the preatreating reactors, connected with first solid-liquid separator；
Second surge tank, it is arranged on below the anaerobic reactor, connected with second solid-liquid separator；
Pump, it is each communicated with respectively with first surge tank and the second surge tank, anaerobic reactor, by the second surge tank
Interior liquid pump is to the first surge tank and anaerobic reactor；
Agitating paddle, it is arranged in the anaerobic reactor；
Preferably, in the device of the described dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas,
First liquid-solid separator and second liquid-solid separator are respectively each the first and second screen packs, and the
One and second screen pack each respectively positioned at the top of first surge tank and the second surge tank, so as to be filtered during solid-liquor separation
Liquid each separately flow into first surge tank and the second surge tank.
Preferably, in the device of the described dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas,
In vertical, the height of the anaerobic reactor is less than the height of the preatreating reactors.
The present invention comprises at least following beneficial effect：
Ammonia handles lignocellulosic material with heat synergy in the present invention, and ammonia and heat can be taken away by liquid,
Recycle, while lignocellulosic material degradation efficiency is improved, also save the energy.The present invention can be used for agriculture waste
The construction of thing large-sized biogas engineering.
Synergy of the invention by hot and dilute ammonia, when reducing pretreatment and anaerobic fermentation using higher temperature conditions
Between, and using liquid specific heat (such as：The specific heat 4.18J/g K of water) much larger than solid specific heat (such as：The ratio of wheat stalk
Hot 1.33J/g K) characteristic, retain fluid within system and circulate, only remove solid material, biogas residue is produced, so as to solve
The environmental problem that biogas slurry in large-sized biogas engineering is brought.It is thermally integrated simultaneously as the present invention makes full use of, hot fermentation is carried
High biogas output can make up the heat of hot fermentation needs completely, and can reduce reactor and cost of investment.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Brief description of the drawings
Fig. 1 is the dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas described in the one of embodiment of the present invention
Device structural representation.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification text
Word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of individual other elements or its combination.
The method that the present invention provides a kind of dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas, including following step
Suddenly：
A period of time is soaked Step 1: lignocellulosic material is placed in liquor ammoniae dilutus at 55~120 DEG C of temperature, it
First time separation of solid and liquid is carried out afterwards obtains the first solid and the first liquid；With
Step 2: the first solid is fermented to produce biogas under anaerobic condition, after producing biogas afterwards
Material carries out second of separation of solid and liquid and obtains second liquid.
In such scheme, preferably, in step 1, the concentration of the liquor ammoniae dilutus is 0.1% -2% (w/w), institute
The length for stating lignocellulosic material is no longer than 5cm, and described a period of time is 2h~72h.
In one of embodiment of the present invention, preferably, in step 2, by first solid in anaerobic condition
Lower fermented is included with producing the specific method of biogas：
First solid and seed sludge are well mixed, are placed under anaerobic condition, keeps the content of solid content to exist
10%~20% (w/w), fermented 13~30 days at 50~60 DEG C of temperature.
In one of embodiment of the present invention, preferably, in step 2, carry out in the fermentation, also stirred
Mix, every 12 hour stirrings once, each mixing time duration is 1-6h.
In one of embodiment of the present invention, preferably, the one of the whole of first liquid and the liquid
Part is recycled, and for reconfiguring liquor ammoniae dilutus, the remainder of the second liquid is recycled in the hair
In ferment.
In one embodiment of the invention, the present invention provides a kind of dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production
The method of biogas, is concretely comprised the following steps：First dry lignocellulosic material is crushed to no more than 5 centimetres, and by 28-30%
The liquor ammoniae fortis of (weight ratio) is diluted to 0.1% -2% liquor ammoniae dilutus, then by lignocellulosic in preatreating reactors 2
Raw material soaking in liquor ammoniae dilutus, be well mixed, acidifying is hydrolyzed, by -3 days 2 hours processing after, separation the first solid with
First liquid, the first liquid circulation are returned preatreating reactors 2 and reused.Solid material and seed sludge are added into anaerobic reaction
In device 3, it is well mixed, solid holdup is maintained between 10~20%, and temperature is 50~60℃Under fermented, fermentation materials stop
Time is 13~30 days.Constantly there is biogas generation during anaerobic fermentation.After fermentation materials exceed the residence time, by separation, obtain
The biogas residue discharge anaerobic reactor 3 arrived；Obtained biogas slurry be recycled back to preatreating reactors 2 and anaerobic reactor 3 with reduce water and
The consumption of energy.
In above-described embodiment, 0.1% -2% mentioned liquor ammoniae dilutus is weight ratio, can be diluted with water, can also
Diluted with biogas slurry.In mentioned preatreating reactors 2 temperature be 55~120 DEG C, pressure be 55~120 DEG C when liquor ammoniae dilutus from
Pressure caused by body volatilization.
Mentioned second liquid is supplemented after a small amount of ammonia is transferred to 0.1% -2% and followed as recovery ammonia and energy regenerating carrier
Loopback preatreating reactors 2.
Mentioned adds the first solid material and seed sludge in anaerobic reactor 3, preatreating reactors 2 and anaerobism
Dividing plate is provided between reactor 3, after dividing plate is opened, pressure can be produced when can use 55~120 DEG C of liquor ammoniae dilutus volatilizations, by thing
Material is overwhelmed in anaerobic reactor 3, material can be also sent to down in anaerobic reactor 3 using gravity.
As shown in figure 1, the present invention also provides the device of a kind of dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas,
Including：
Preatreating reactors 2, it provides an enclosed environment, and a temperature is 55~120 DEG C of environment, and the pretreatment is anti-
Answer in device 2 and accommodate liquor ammoniae dilutus；
Anaerobic reactor 3, it provides an anaerobic environment, one end of the anaerobic reactor 3 and the preatreating reactors 2
One end operationally connect or disconnect, the anaerobic reactor 3 be used for produce biogas；Mentioned anaerobic reactor 3 can be with
It is cuboid or cylinder.
First liquid-solid separator, it is arranged in the preatreating reactors 2.
In such scheme, preferably, also including：
Second liquid-solid separator 6, it is arranged between the anaerobic reactor 3 and the preatreating reactors 2, and described
The other end of anaerobic reactor 3 and the other end of the preatreating reactors 2 are each respectively communicated with.
In such scheme, preferably, also including：
Dividing plate 9, it is arranged between one end of the anaerobic reactor 3 and one end of the preatreating reactors 2, is used for
The anaerobic reactor 3 is set to connect or disconnect with the preatreating reactors 2；
First surge tank 4, it is arranged on the lower section of preatreating reactors 2, connected with first solid-liquid separator；
Second surge tank 7, it is arranged on the lower section of anaerobic reactor 3, connected with second solid-liquid separator 6；
Pump 8, it each communicates with, second is delayed respectively with the surge tank 7 of the first surge tank 4 and second, anaerobic reactor 3
The liquid pump rushed in tank 7 is to the first surge tank 4 and anaerobic reactor 3；With
Agitating paddle 11, it is arranged in the anaerobic reactor 3；The agitating paddle using ribbon impeller, every
Once, each mixing time is 1~6 hour for 12 hour stirrings.
In such scheme, preferably,
First liquid-solid separator and second liquid-solid separator 6 are respectively each the first and second screen packs, and
First and second screen packs are each located at the top of the surge tank 7 of the first surge tank 4 and second respectively, so that during solid-liquor separation
The liquid of filtering is each separately flowed into the surge tank 7 of the first surge tank 4 and second.
In one of embodiment of the present invention, preferably, in vertical, the height of the anaerobic reactor 3
Height of the degree less than the preatreating reactors 2.
In one of embodiment of the present invention, specific implementation process is as follows：As shown in Figure 1, agriculture wood fibre
Plain class discarded object such as maize straw, straw, straw are used as raw material, are collected from farmland, spiral transferring is used after crushing
Send machine 1 that stalk is sent into preatreating reactors 2.In preatreating reactors 2, stalk is soaked with dilute ammonia solution.Leaching
After bubble, dilute ammonia solution separates with stalk, is sent to surge tank 4 and does immersion use next time.Open preatreating reactors 2 and anaerobism
Baffle plate between reactor 3, treated stalk enter anaerobic reactor 3 by gravity, and helical-ribbon type is stirred for intermittently mixing
Zymotic fluid, prevent from being layered.Caused biogas goes out anaerobic reactor 3 from top and goes to purify in anaerobic fermentation process.In anaerobic reaction
Layering occurs in the afterbody stage casing of device 3, and this partially liq is expelled into surge tank 7 using gravity.In anaerobic reactor afterbody hypomere
Discharging, separate biogas slurry using the second liquid-solid separator 6 and biogas residue, biogas residue go out device organic fertilizer；Biogas slurry is sent to the second surge tank
7.The 10 signified liquid levels in anaerobic reactor 3 in figure.Biogas slurry part pump 8 in second surge tank 7 is sent to the first buffering
Tank 4, another part are sent to that anaerobic reactor 3 is anterior to be mixed with pretreated stalk.
Embodiment 1
5g (dry weight) wheat straw is weighed, is put into and fills the closed appearance that ammonia concn distinguishes 0.358%, 0.706% and 1.02%
Soaked in device, pretreatment temperature is 55 DEG C, and processing time is 12 hours.After being disposed, the first liquid and the first solid are separated.
First solid input anaerobic reactor is fermented, and fermentation temperature is 55 DEG C, and fermentation time obtains biogas total amount point when being 14 days
Wei not 1487,1455 and 1590mL；Unit VS (volatile materials) methane production is respectively 202,194 and 218mLCH4/gVS。
Embodiment 2
5g (dry weight) wheat straw is weighed, is put into and fills the closed appearance that ammonia concn distinguishes 0.358%, 0.706% and 1.02%
Soaked in device, pretreatment temperature is 55 DEG C, and processing time is 24 hours.After being disposed, liquid and solid are separated.Solid is put into
Anaerobic reactor is fermented, and fermentation temperature is 55 DEG C, and it is respectively 1770,1924 that fermentation time obtains biogas total amount when being 16 days
And 1750mL；Unit VS (volatile materials) methane production is respectively 252,268 and 247mLCH4/gVS。
Embodiment 3
5g (dry weight) wheat straw is weighed, is put into and fills the closed appearance that ammonia concn distinguishes 0.358%, 0.706% and 1.02%
Soaked in device, pretreatment temperature is 55 DEG C, and processing time is 48 hours.After being disposed, liquid and solid are separated.Solid is put into
Anaerobic reactor is fermented, and fermentation temperature is 55 DEG C, and it is respectively 1415,1375 that fermentation time obtains biogas total amount when being 13 days
And 1370mL；Unit VS (volatile materials) methane production is respectively 204,194 and 199mLCH4/gVS。
Embodiment 4
5g (dry weight) wheat straw is weighed, is put into and fills the closed appearance that ammonia concn distinguishes 0.358%, 0.706% and 1.02%
Soaked in device, pretreatment temperature is 105 DEG C, and processing time is 12 hours.After being disposed, liquid and solid are separated.Solid is thrown
Enter anaerobic reactor to be fermented, fermentation temperature is 55 DEG C, fermentation time obtained when being 14 days biogas total amount be respectively 1430,
1525 and 1569mL；Unit VS (volatile materials) methane production is respectively 214,220 and 232mLCH4/gVS。
Embodiment 5
5g (dry weight) wheat straw is weighed, is put into and fills the closed appearance that ammonia concn distinguishes 0.358%, 0.706% and 1.02%
Soaked in device, pretreatment temperature is 105 DEG C, and processing time is 24 hours.After being disposed, liquid and solid are separated.Solid is thrown
Enter anaerobic reactor to be fermented, fermentation temperature is 55 DEG C, fermentation time obtained when being 18 days biogas total amount be respectively 1815,
1922 and 1830mL；Unit VS (volatile materials) methane production is respectively 276,280 and 271mLCH4/gVS。
Embodiment 6
5g (dry weight) wheat straw is weighed, is put into and fills the closed appearance that ammonia concn distinguishes 0.358%, 0.706% and 1.02%
Soaked in device, pretreatment temperature is 105 DEG C, and processing time is 48 hours.After being disposed, liquid and solid are separated.Solid is thrown
Enter anaerobic reactor to be fermented, fermentation temperature is 55 DEG C, fermentation time obtained when being 16 days biogas total amount be respectively 1723,
1862 and 1800mL；Unit VS (volatile materials) methane production is respectively 265,273 and 269mLCH4/gVS。
Embodiment 7
5g (dry weight) wheat straw is weighed, is put into fill ammonia concn and distinguish and is soaked in 0.1% and 2% closed container, pre- place
It is 120 DEG C to manage temperature, and processing time is 2 hours.After being disposed, liquid and solid are separated.Solid input anaerobic reactor enters
Row fermentation, fermentation temperature are 50 DEG C, and it is respectively 1322 and 1370mL that fermentation time obtains biogas total amount when being 30 days；Unit VS
(volatile materials) methane production is respectively 192 and 199mLCH4/gVS。
Embodiment 8
5g (dry weight) wheat straw is weighed, is put into fill ammonia concn and distinguish and is soaked in 0.1% closed container, pretreatment temperature
For 55 DEG C, processing time is 3 days.After being disposed, liquid and solid are separated.Solid input anaerobic reactor is fermented, and is sent out
Ferment temperature is 60 DEG C, and it is respectively 1233mL that fermentation time obtains biogas total amount when being 30 days；Unit VS (volatile materials) produces first
Alkane amount is respectively 179mLCH4/gVS。
Module number and treatment scale described herein are the explanations for simplifying the present invention.To the integrated height of the present invention
The dilute ammonia pretreatment of temperature and anaerobic fermentation produce the application of the method and apparatus of biogas, modifications and variations to those skilled in the art
For be obvious.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, it is of the invention and unlimited
In specific details and shown here as the legend with description.
Claims (10)
1. the method for a kind of dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas, it is characterised in that comprise the following steps：
Soak a period of time Step 1: lignocellulosic material is placed in liquor ammoniae dilutus at 55~120 DEG C of temperature, it is laggard
Row first time separation of solid and liquid obtains the first solid and the first liquid；With
Step 2: the first solid is carried out into hot fermentation to produce biogas under anaerobic condition, after producing biogas afterwards
Material carries out second of separation of solid and liquid and obtains second liquid.
2. the method for the integrated dilute ammonia pretreatment of high temperature and anaerobic fermentation production biogas as claimed in claim 1, it is characterised in that
In step 1, the concentration of the liquor ammoniae dilutus is 0.1% -2% (w/w), and the length of the lignocellulosic material is no longer than
5cm, described a period of time are 2h~72h.
3. the method for the integrated dilute ammonia pretreatment of high temperature and anaerobic fermentation production biogas as claimed in claim 1, it is characterised in that
In step 2, first solid is fermented under anaerobic condition to be included with producing the specific method of biogas：
First solid and seed sludge are well mixed, are placed under anaerobic condition, keep the content of solid content 10%~
20% (w/w), fermented 13~30 days at 50~60 DEG C of temperature.
4. the method for the integrated dilute ammonia pretreatment of high temperature and anaerobic fermentation production biogas as claimed in claim 1, it is characterised in that
In step 2, carry out in the fermentation, be also stirred, every 12 hour stirrings once, each mixing time duration
For 1-6h.
5. the method for the integrated dilute ammonia pretreatment of high temperature and anaerobic fermentation production biogas as claimed in claim 1, it is characterised in that
The whole of first liquid and a part for the liquid are recycled, for reconfiguring liquor ammoniae dilutus, described second
The remainder of liquid is recycled in the fermentation.
6. the device of a kind of dilute ammonia pretreatment of integrated high temperature and anaerobic fermentation production biogas, it is characterised in that including：
Preatreating reactors, it provides an enclosed environment, and a temperature is 55~120 DEG C of environment, the preatreating reactors
Inside accommodate liquor ammoniae dilutus；
Anaerobic reactor, it provides an anaerobic environment, one end of the anaerobic reactor and one end of the preatreating reactors
Operationally connect or disconnect, the anaerobic reactor is used to produce biogas；With
First liquid-solid separator, it is arranged in the preatreating reactors.
7. the device of the integrated dilute ammonia pretreatment of high temperature and anaerobic fermentation production biogas as claimed in claim 1, it is characterised in that
Also include：
Second liquid-solid separator, it is arranged between the anaerobic reactor and the preatreating reactors, anti-with the anaerobism
The other end of device and the other end of the preatreating reactors is answered each to be respectively communicated with.
8. the device of the integrated dilute ammonia pretreatment of high temperature and anaerobic fermentation production biogas as claimed in claim 7, it is characterised in that
Also include：
Dividing plate, it is arranged between one end of the anaerobic reactor and one end of the preatreating reactors, described for making
Anaerobic reactor is connected or disconnected with the preatreating reactors；
First surge tank, it is arranged on below the preatreating reactors, connected with first solid-liquid separator；
Second surge tank, it is arranged on below the anaerobic reactor, connected with second solid-liquid separator；
Pump, it is each communicated with respectively with first surge tank and the second surge tank, anaerobic reactor, by the second surge tank
Liquid pump is to the first surge tank and anaerobic reactor；
Agitating paddle, it is arranged in the anaerobic reactor.
9. the device of the integrated dilute ammonia pretreatment of high temperature and anaerobic fermentation production biogas as claimed in claim 8, it is characterised in that
First liquid-solid separator and second liquid-solid separator each respectively the first and second screen packs, and the first He
Second screen pack is each respectively positioned at the top of first surge tank and the second surge tank, so that the liquid filtered during solid-liquor separation
Body is each separately flowed into first surge tank and the second surge tank.
10. the device of the integrated dilute ammonia pretreatment of high temperature and anaerobic fermentation production biogas, its feature exist as claimed in claim 1
In in vertical, the height of the anaerobic reactor is less than the height of the preatreating reactors.
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