CN109652090A - The system and method for soil conditioner is prepared using sludge and biomass - Google Patents
The system and method for soil conditioner is prepared using sludge and biomass Download PDFInfo
- Publication number
- CN109652090A CN109652090A CN201910088143.5A CN201910088143A CN109652090A CN 109652090 A CN109652090 A CN 109652090A CN 201910088143 A CN201910088143 A CN 201910088143A CN 109652090 A CN109652090 A CN 109652090A
- Authority
- CN
- China
- Prior art keywords
- sludge
- outlet
- inlet
- entrance
- pyrolysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
Abstract
The invention discloses the system and method for preparing soil conditioner using sludge and biomass, system includes: conditioning device, with sludge outlet after sludge inlet, conditioner entrance and conditioning；Filter-pressing device has sludge inlet, filtrate (liquid and filters pressing sludge outlet after conditioning；Mixing device, exports with filters pressing sludge inlet, biomass inlet, tar entrance and mixed material, and filters pressing sludge inlet is connected with filters pressing sludge outlet；Drying device, with material outlet after mixed material entrance, dry-heat air entrance, a tail wind outlet and drying；Pyrolysis installation, with material inlet, destructive distillation hot-wind inlet, charcoal outlet, pyrolysis oil gas vent, the outlet of destructive distillation cold wind, material inlet is connected with mixed material outlet；Screening plant is connected with charcoal entrance, soil conditioner outlet and the outlet of bulky grain charcoal, charcoal entrance with charcoal outlet, and the outlet of bulky grain charcoal is connected with biomass inlet.
Description
Technical field
The invention belongs to chemical fields, and in particular to system and the side of soil conditioner are prepared using sludge and biomass
Method.
Background technique
Containing harmful substances such as a large amount of pathogenic bacteria, parasitic ovum, virus, heavy metals in sludge, directly stacks or utilize
Larger burden can be caused to environment.The organic composition in sludge can be utilized by multiple technologies simultaneously, realize recycling.
Pyrolyzing sludge is to decompose the organic matter in sludge under anoxybiotic atmosphere and generate pyrolytic carbon, pyrolysis gas and micro coke
The process of oil has innoxious and thorough reduction, environmental-friendly, the advantages such as recycling degree height.Charcoal has more
Micropore and specific surface area have good water conservation, delay simultaneously containing nutrients such as higher fixed carbon content and N, P, K abundant
The effect of releasing and increasing soil fertility, what soil resource utilized has a high potential.But the high water content in sludge leads to sludge
The energy consumption of pyrolytic process is excessively high, the heavy metal contained in industrial wastewater be also limit its large-scale application in soil it is main because
Element.Therefore, pyrolyzing sludge charcoal also needs to be further improved for the technical process of soil remediation.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose a kind of system and method for preparing soil conditioner using sludge and biomass, not only using the system
The resource utilization of sludge may be implemented, and the soil conditioner of high added value can be prepared.
In one aspect of the invention, it is using what sludge and biomass prepared soil conditioner the invention proposes a kind of
System.According to an embodiment of the invention, the system comprises:
Conditioning device, sludge outlet after the conditioning device has sludge inlet, conditioner entrance and improves；
Filter-pressing device, the filter-pressing device have sludge inlet, filtrate (liquid and filters pressing sludge outlet after conditioning, the tune
Sludge inlet is connected with sludge outlet after the conditioning after reason；
There is filters pressing sludge inlet, biomass inlet, tar entrance and mixed material to go out for mixing device, the mixing device
Mouthful, the filters pressing sludge inlet is connected with the filters pressing sludge outlet；
Drying device, object after there is the drying device mixed material entrance, dry-heat air entrance, a tail wind to export and is dry
Material outlet, the mixed material entrance are connected with mixed material outlet；
There is material inlet, destructive distillation hot-wind inlet, charcoal outlet, pyrolysis oil gas to go out for pyrolysis installation, the pyrolysis installation
Mouth, the outlet of destructive distillation cold wind, the material inlet are connected with material outlet after the drying；
Screening plant, the screening plant have charcoal entrance, soil conditioner outlet and the outlet of bulky grain charcoal,
The charcoal entrance is connected with charcoal outlet, and the bulky grain charcoal outlet is connected with the biomass inlet.
It is according to an embodiment of the present invention to prepare the system of soil conditioner by by sludge and adjusting using sludge and biomass
Manage agent mixing, on the one hand, the broken wall of sludge may be implemented in conditioner, improves the dewatering of sludge, to reduce the heat of sludge
On the other hand solving energy consumption can be significantly reduced the leaching content of noble metal in charcoal, to reduce heavy metal in soil to plant
Murder by poisoning, while sludge being mixed with biomass and is pyrolyzed, on the one hand, the admixture of biomass reduces weight in sludge organism charcoal
The content of metal increases pyrolysis gas yield, improves thermal energy supply, expands the application range of sludge；On the other hand, sludge is mixed
Add, improve the density of biomass pyrolytic carbon, be readily transported, in addition, the moisture contained in sludge may act as gasifying agent and activation
Agent improves the specific surface area of charcoal, promotes its water conservation, absorption property.Sludge not only may be implemented using the system as a result,
Resource utilization, and the soil conditioner of high added value can be prepared.
In addition, the system according to the above embodiment of the present invention for preparing soil conditioner using sludge and biomass can be with
With following additional technical characteristic:
In some embodiments of the invention, system described above further comprises: the first distribution plenum, first air distribution
Room has the first a tail wind entrance, destructive distillation cold air inlet and dry-heat air outlet, and the first a tail wind entrance and a tail wind export
It is connected, the destructive distillation cold air inlet is connected with destructive distillation cold wind outlet, and the dry-heat air outlet enters with the dry-heat air
Mouth is connected.Thus, it is possible to significantly reduce system energy consumption.
In some embodiments of the invention, system described above further comprises: Oil-gas Separation purification device, the oil
Gas separating purifying device has a pyrolysis oil gas entrance, pyrolysis oil export and pyrolysis gas outlet, the pyrolysis oil gas entrance with it is described
It is pyrolyzed oil gas vent to be connected, the pyrolysis oil export is connected with the tar entrance.
In some embodiments of the invention, system described above further comprises: combustion chamber, and the combustion chamber has combustion
Expect entrance, the first air intake and high-temperature flue gas outlet；There is pyrolysis gas entrance, the second air to enter for dual firing chamber, the dual firing chamber
Exhanst gas outlet after mouth, high-temperature flue gas entry and burning, the pyrolysis gas entrance are connected with the pyrolysis gas outlet, the high temperature cigarette
Gas entrance is connected with the high-temperature flue gas outlet；Second distribution plenum, after second distribution plenum has the second a tail wind entrance, burning
Smoke inlet and destructive distillation hot-blast outlet, the second a tail wind entrance are connected with a tail wind outlet, smoke inlet after the burning
It is connected with exhanst gas outlet after the burning, the destructive distillation hot-blast outlet is connected with the destructive distillation hot-wind inlet.Thus, it is possible to significant
Reduce system energy consumption.
In some embodiments of the invention, the pyrolysis installation of system described above includes: inner cylinder, and the inner cylinder is logical
It crosses the driver and drives rotatable setting, and the inner wall of the inner cylinder is equipped with baffle, outer wall is equipped with shovelling plate, the destructive distillation heat
Wind entrance and destructive distillation cold wind outlet are located on the inner cylinder；Outer cylinder, the outer cylinder are set on the inner cylinder, and described
Dry place, the material inlet, charcoal outlet and the pyrolysis oil gas vent are formed between outer cylinder and the inner cylinder
It is located on the outer cylinder.Thus, it is possible to significantly improve pyrolysis efficiency.
In another aspect of the invention, soil conditioner is prepared using sludge and biomass the invention proposes a kind of
Method.According to an embodiment of the invention, the described method includes:
(1) sludge is mixed with conditioner and carries out conditioning processing, so as to sludge after being improved；
(2) sludge after the conditioning is subjected to filters pressing processing, to obtain filtrate and filters pressing sludge；
(3) the filters pressing sludge is mixed with biomass and tar, to obtain mixed material；
(4) mixed material is contacted with dry-heat air and is dried, to obtain material after a tail wind and drying；
(5) material after the drying is contacted with destructive distillation hot wind and carries out pyrolysis processing, to obtain charcoal, pyrolysis oil gas
With destructive distillation cold wind；
(6) charcoal is subjected to screening process, to obtain soil conditioner and bulky grain charcoal, and will be described
Bulky grain charcoal is supplied into step (3).
It is according to an embodiment of the present invention to prepare the method for soil conditioner by by sludge and adjusting using sludge and biomass
Manage agent mixing, on the one hand, the broken wall of sludge may be implemented in conditioner, improves the dewatering of sludge, to reduce the heat of sludge
On the other hand solving energy consumption can be significantly reduced the leaching content of noble metal in charcoal, to reduce heavy metal in soil to plant
Murder by poisoning, while sludge being mixed with biomass and is pyrolyzed, on the one hand, the admixture of biomass reduces weight in sludge organism charcoal
The content of metal increases pyrolysis gas yield, improves thermal energy supply, expands the application range of sludge；On the other hand, sludge is mixed
Add, improve the density of biomass pyrolytic carbon, be readily transported, in addition, the moisture contained in sludge may act as gasifying agent and activation
Agent improves the specific surface area of charcoal, promotes its water conservation, absorption property.Sludge not only may be implemented using this method as a result,
Resource utilization, and the soil conditioner of high added value can be prepared.
In addition, the method according to the above embodiment of the present invention for preparing soil conditioner using sludge and biomass can be with
With following additional technical characteristic:
In some embodiments of the invention, method described above further comprises: (7) are by a part of a tail wind
Air distribution heat exchange is carried out with the destructive distillation cold wind, to obtain dry-heat air, and the dry-heat air is supplied into step (4).
Thus, it is possible to significantly reduce system energy consumption.
In some embodiments of the invention, method described above further comprises: (8) carry out the pyrolysis oil gas
Isolation of purified processing, to obtain pyrolysis oil and pyrolysis gas, and the pyrolysis oil gas is supplied into step (3).
In some embodiments of the invention, method described above further comprises: (9) mix fuel and air
Combination burning, to obtain high-temperature flue gas；(10) high-temperature flue gas and the pyrolysis gas are mixed with air and is burnt, so as to
Flue gas after being burnt；(11) flue gas after another part of the tail gas and burning is subjected to air distribution heat exchange, to obtain destructive distillation
Hot wind, and by the destructive distillation warm-air supply into step (5).Thus, it is possible to significantly reduce system energy consumption.
In some embodiments of the invention, in step (1), the mass ratio of the conditioner and over dry sludge be (8~
12): 100.Thus, it is possible to significantly improve the quality of soil conditioner while reducing system energy consumption.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is that the system structure according to an embodiment of the invention for preparing soil conditioner using sludge and biomass is shown
It is intended to；
Fig. 2 is the system structure that soil conditioner is prepared using sludge and biomass of further embodiment according to the present invention
Schematic diagram；
Fig. 3 is the system structure that soil conditioner is prepared using sludge and biomass of another embodiment according to the present invention
Schematic diagram；
Fig. 4 is the system structure that soil conditioner is prepared using sludge and biomass of another embodiment according to the present invention
Schematic diagram；
Fig. 5 is that the method flow according to an embodiment of the invention for preparing soil conditioner using sludge and biomass shows
It is intended to；
Fig. 6 is the method flow that soil conditioner is prepared using sludge and biomass of further embodiment according to the present invention
Schematic diagram；
Fig. 7 is the method flow that soil conditioner is prepared using sludge and biomass of another embodiment according to the present invention
Schematic diagram；
Fig. 8 is the method flow that soil conditioner is prepared using sludge and biomass of another embodiment according to the present invention
Schematic diagram.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In one aspect of the invention, it is using what sludge and biomass prepared soil conditioner the invention proposes a kind of
System.According to an embodiment of the invention, the system includes: conditioning device 100, filter-pressing device 200, mixing device with reference to Fig. 1-4
300, drying device 400, pyrolysis installation 500 and screening plant 600.
According to an embodiment of the invention, conditioning device 100 has sludge inlet 101,102 and of conditioner entrance with reference to Fig. 1
Sludge outlet 103 after conditioning, and be suitable for mixing in sludge and conditioner, sludge after being improved.Inventors have found that by will be dirty
Mud is mixed with conditioner, on the one hand, the broken wall of sludge may be implemented in conditioner, improves the dewatering of sludge, to reduce dirt
On the other hand the leaching content of noble metal in charcoal can be significantly reduced, to reduce heavy metal in soil in the pyrolysis energy consumption of mud
Murder by poisoning to plant.The mass ratio of a specific embodiment according to the present invention, conditioner and over dry sludge is (8~12):
100.Inventors have found that shell-broken effect is not achieved, moisture content is higher after filters pressing, increases pyrolysis if conditioning agent content is too low
Energy consumption, while moisture content is high in subsequent pyrolysis gas, is unfavorable for later use；And if conditioner too high levels, will lead to subsequent
Obtained charcoal pH is excessively high, influences the quality of soil conditioner.Soil can guaranteed using the mixed proportion of the application as a result,
System energy consumption is reduced while earth modifying agent quality.Specifically, the moisture content of sludge be 95~97wt%, if moisture content 80~
The sludge of 90wt%, then improved after being diluted in advance again, and the type of conditioner is not particularly restricted, as long as energy
It enough realizes the broken wall of sludge and reduces Leaching of Heavy Metals, such as can be quick lime.
According to an embodiment of the invention, filter-pressing device 200 has sludge inlet 201, filtrate (liquid after conditioning with reference to Fig. 1
202 and filters pressing sludge outlet 203, sludge inlet 201 is connected with sludge outlet 103 after conditioning after conditioning, and suitable for after improving
Sludge carries out filters pressing processing, obtains filtrate and filters pressing sludge.As a result, by mixing sludge with conditioner in above-mentioned operation,
It realizes the broken wall to sludge, then the partial moisture in sludge can be deviate from through filters pressing processing, to reduce subsequent pyrolyzing sludge mistake
Journey energy consumption.Specifically, filter-pressing device is plate and frame filter press, the pressure of plate and frame filter press is 1.5~2.5MPa, time of filter pressing 1
~5 hours, water content was 58~63wt% in obtained filters pressing sludge.
According to an embodiment of the invention, mixing device 300 has filters pressing sludge inlet 301, biomass inlet with reference to Fig. 1
302, tar entrance 303 and mixed material outlet 304, filters pressing sludge inlet 301 is connected with filters pressing sludge outlet 203, and is suitable for
Filters pressing sludge is mixed with biomass and tar, obtains mixed material.Inventors have found that by the way that sludge and biomass are mixed
Conjunction is pyrolyzed, on the one hand, and the admixture of biomass reduces the content of heavy metal in sludge organism charcoal, increases pyrolysis gas yield,
Thermal energy supply is improved, the application range of sludge is expanded；On the other hand, the admixture of sludge improves the close of biomass pyrolytic carbon
Degree, is readily transported, meanwhile, the moisture contained in sludge may act as gasifying agent and activator, improves the specific surface area of charcoal, mentions
Its water conservation, absorption property is risen, the mouldability of sludge and biomass can not only in addition be significantly improved as binder using tar
Can, and the further pyrolysis of tar can produce pyrolytic carbon, and in pyrolytic process, and a large amount of precipitations of tar can increase
The specific surface area of charcoal.Specifically, being carried out in advance to filters pressing sludge before mixing filters pressing sludge with biomass and tar
It is broken, the sludge that partial size is not higher than 5 millimeters is obtained, is not higher than 10 millimeters using the partial size of biomass.One according to the present invention
The mass ratio of specific embodiment, butt biomass and over dry sludge is 1:(1~5).Inventors have found that can using the mixed proportion
The content of beary metal in sludge is effectively reduced, to guarantee the quality of gained soil conditioner.
According to an embodiment of the invention, there is drying device 400 mixed material entrance 401, dry-heat air to enter with reference to Fig. 1
Material outlet 404 after mouth 402, a tail wind outlet 403 and drying, mixed material entrance 401 are connected with mixed material outlet 304, and
Suitable for mixed material obtained above exchanges heat with dry-heat air, material after a tail wind and drying is obtained.It is according to the present invention
One specific embodiment, the temperature of dry-heat air are 160~240 degrees Celsius, and drying time is 45~90min, are mixed after dry
The moisture content of material is 10%~25wt%.
Specifically, drying device is multi-layer forming mesh dryer, including feeding device, conveyer belt and automatic control system
System, feeding device are arranged in the upper end of every layer of conveyer belt, and effect is fed to conveyer belt, and it is uniform to be allowed to thin and thick, in feeding device
It installs molding machine additional, processing and forming is carried out to material, improve drying efficiency, upper layer and middle layer conveyer belt are net belt type, screen distance
Size is 3-5mm, bottom conveyer belt be it is board-like, plate is equipped with the punching of 1.5mm*3mm rectangle, to prevent leak-stopping material；Mixed material
Entering conveyer belt through feeding device, realizes molding and uniform distribution, material follows mesh belt to move in drying machine after drying later,
And with dry-heat air direct contact heat transfer, realize drying.
According to an embodiment of the invention, pyrolysis installation 500 has material inlet 501, destructive distillation hot-wind inlet with reference to Fig. 1
502, charcoal outlet 503, pyrolysis oil gas vent 504, destructive distillation cold wind outlet 505, material inlet 501 and material outlet after drying
404 are connected, and are suitable for by material after drying obtained above and destructive distillation hot wind indirect contact heat exchanger, so that mixed material is in destructive distillation
Pyrolytic reaction occurs under the action of hot wind, obtains charcoal, pyrolysis oil gas and destructive distillation cold wind.Specifically, the temperature of destructive distillation hot wind
It is 700~900 degrees Celsius, pyrolysis time is 30~90min.
A specific embodiment according to the present invention, with reference to Fig. 1, pyrolysis installation 500 includes inner cylinder 51 and outer cylinder 52, inner cylinder
51 drive rotatable setting by driver (not shown), and the inner wall of inner cylinder 51 is equipped with baffle 511, and outer wall is equipped with shovelling plate
512, destructive distillation hot-wind inlet 502 and destructive distillation cold wind outlet 505 are located on inner cylinder 51；Outer cylinder 52 is set on inner cylinder 51, and outer
Dry place 50 is formed between cylinder 52 and inner cylinder 51, material inlet 501, charcoal outlet 503 and pyrolysis oil gas vent 504 are located at
On outer cylinder 52.Specifically, pyrolysis installation is double-barrel structure, inner cylinder rotating, outer cylinder remained stationary, and destructive distillation warm-air supply is into inner cylinder
It is flowed in inner cylinder, by being arranged baffle in inner cylinder, such as baffle is handed in inner cylinder along the axial and circumferential interval of inner cylinder
Mistake distribution, so as to increase the contact area of air-flow, improves the heat utilization efficiency of hot wind, and material is in outer cylinder and inner cylinder after drying
It is flowed in interior formation dry place with the rotation of inner cylinder, by arranging shovelling plate, such as shovelling plate inner cylinder on the outer wall of inner cylinder
Be spaced apart on outer wall along the axial and circumferential of inner cylinder, and adjacent two rows of shovelling plate is interspersed, constantly by filters pressing sludge into
Row stirring, and promoted to outlet.
According to an embodiment of the invention, screening plant 600 has charcoal entrance 601, soil conditioner outlet 602 and big
Granular biological charcoal outlet 603, charcoal entrance 601 are connected with charcoal outlet 503, bulky grain charcoal outlet 603 and biology
Matter entrance 302 is connected, and the charcoal for being suitable for obtaining pyrolytic process carries out screening process, obtains soil conditioner and bulky grain
Biomass carbon, and bulky grain biomass carbon is supplied to mixing device.Specifically, screening plant has cooling system, from pyrolysis
The screened device of the charcoal that device obtains is cooling and screening, screening obtain charcoal of the partial size lower than 5 millimeters and change as soil
Good dose, and bulky grain charcoal of the partial size not less than 5 millimeters is supplied into mixing device, bulky grain charcoal not only may be implemented
The abundant pyrolysis of material, and aggregate can be served as mixed material, accelerate drying efficiency.
It is according to an embodiment of the present invention to prepare the system of soil conditioner by by sludge and adjusting using sludge and biomass
Manage agent mixing, on the one hand, the broken wall of sludge may be implemented in conditioner, improves the dewatering of sludge, to reduce the heat of sludge
On the other hand solving energy consumption can be significantly reduced the leaching content of noble metal in charcoal, to reduce heavy metal in soil to plant
Murder by poisoning, while sludge being mixed with biomass and is pyrolyzed, on the one hand, the admixture of biomass reduces weight in sludge organism charcoal
The content of metal increases pyrolysis gas yield, improves thermal energy supply, expands the application range of sludge；On the other hand, sludge is mixed
Add, improve the density of biomass pyrolytic carbon, be readily transported, in addition, the moisture contained in sludge may act as gasifying agent and activation
Agent improves the specific surface area of charcoal, promotes its water conservation, absorption property.Sludge not only may be implemented using the system as a result,
Resource utilization, and the soil conditioner of high added value can be prepared.
According to an embodiment of the invention, with reference to Fig. 2, it is above-mentioned using sludge and biomass prepare the system of soil conditioner into
One step includes: the first distribution plenum 700, and the first distribution plenum 700 has the first a tail wind entrance 701, destructive distillation cold air inlet 702 and drying
Hot-blast outlet 703, the first a tail wind entrance 701 are connected with a tail wind outlet 403, destructive distillation cold air inlet 702 and destructive distillation cold wind outlet 505
It is connected, a part for a tail wind that dry-heat air outlet 703 is connected with dry-heat air entrance 402, and is suitable for obtaining drying device
It carries out mixing air distribution with the destructive distillation cold wind that pyrolysis installation obtains, obtains dry-heat air, and dry-heat air is supplied to drying device
It is used as dried medium.Thus, it is possible to carry out being used as dry-heat air after mixing preheating with a tail wind using the waste heat of destructive distillation cold wind
It uses, to improve the resource utilization of system energy.Specifically, the temperature of destructive distillation cold wind is 240~450 degrees Celsius, obtain
Dry-heat air temperature be 180~350 degrees Celsius.
According to an embodiment of the invention, with reference to Fig. 3, it is above-mentioned using sludge and biomass prepare the system of soil conditioner into
One step includes: Oil-gas Separation purification device 800, and there is Oil-gas Separation purification device 800 pyrolysis oil gas entrance 801, pyrolysis oil to go out
Mouth 802 and pyrolysis gas outlet 803, pyrolysis oil gas entrance 801 are connected with pyrolysis oil gas vent 504, are pyrolyzed oil export 802 and tar
Entrance 303 is connected, and the pyrolysis oil gas for being suitable for obtaining pyrolysis installation carries out isolation of purified, obtains pyrolysis oil and pyrolysis gas, and
Pyrolysis oil is supplied into mixing device and is used as binder.Inventors have found that by using pyrolysis oil as binder reuse
Into mixing device, the processability of sludge and biomass is not only increased, and pyrolysis gas is generated by pyrolysis again, increase heat
Amount supplies, resource consolidation in realization system；Meanwhile the specific surface area that can increase charcoal is precipitated in a large amount of of pyrolysis oil, improves life
Object charcoal performance.Specifically, oil gas purification separation device can be that pyrolysis Oil-gas Separation and purification may be implemented in the prior art
Any equipment, such as may include spray column, oil water separator and pyrolysis air purifying apparatus, pyrolysis oil gas is sprayed through spray column
Afterwards, so that pyrolysis gas is separated, and obtained oil water mixture settle and separate in oil water separator, then use desulfurizing tower
It is purified Deng to pyrolysis gas.
According to an embodiment of the invention, the above-mentioned system for preparing soil conditioner using sludge and biomass is further wrapped
It includes: combustion chamber 900, dual firing chamber 1000 and the second distribution plenum 1100.
According to one embodiment of present invention, combustion chamber 900 has fuel inlet 901, the first air intake 902 and high temperature
Exhanst gas outlet 903, and be suitable for mixing with air fuel burning, obtain high-temperature flue gas.Specifically, fuel can be biology
Matter, and can according to need supplement clean fuel, such as coal gas etc. after natural gas, synthesis gas, purification.
Still another embodiment in accordance with the present invention, dual firing chamber 1000 have pyrolysis gas entrance 1001, second air intake
1002, exhanst gas outlet 1004 after high-temperature flue gas entry 1003 and burning, pyrolysis gas entrance 1001 is connected with pyrolysis gas outlet 803,
High-temperature flue gas entry 1003 is connected with high-temperature flue gas outlet 903, and be suitable for the pyrolysis gas that obtains Oil-gas Separation purification device with
Air and high-temperature flue gas are mixed and burned, flue gas after being burnt.Specifically, by the high-temperature flue gas for obtaining combustion chamber supply to
Dual firing chamber is mixed and burned with pyrolysis gas, and temperature is higher than combustion chamber in dual firing chamber, so as to decompose in high-temperature flue gas
The toxic components such as dioxin obtain flue gas after the higher and burning without toxic component of temperature.
According to still another embodiment of the invention, the second distribution plenum 1100 has cigarette after the second a tail wind entrance 1101, burning
Gas entrance 1102 and destructive distillation hot-blast outlet 1103, the second a tail wind entrance 1101 are connected with a tail wind outlet 403, smoke inlet after burning
1102 are connected with exhanst gas outlet 1004 after burning, and destructive distillation hot-blast outlet 1103 is connected with destructive distillation hot-wind inlet 502, and are suitable for do
Flue gas carries out air distribution heat exchange after the burning for the high temperature that the another part for a tail wind that dry device obtains and dual firing chamber obtain, and obtains destructive distillation
Hot wind, and obtained destructive distillation warm-air supply is used to pyrolysis installation as dry distillation medium.
As described above, the system according to an embodiment of the present invention for preparing soil conditioner using sludge and biomass can have
Selected from following at least one advantage:
(1) sludge is improved through quick lime, on the one hand realizes the broken wall of sludge, improves dewatering performance of sludge, while as weight
Metal-cured dose, the leaching content of heavy metal in charcoal is reduced, improves the applicability that charcoal is used for soil remediation；
(2) sludge and biomass copyrolysis, on the one hand, the admixture of biomass reduces containing for heavy metal in sludge organism charcoal
Amount increases pyrolysis gas yield, improves thermal energy supply, expands the application range of sludge；On the other hand, the admixture of sludge improves
The density of biomass pyrolytic carbon, is readily transported.In addition, the moisture contained in sludge may act as gasifying agent and activator, improve
The specific surface area of charcoal promotes its water conservation, absorption property；
(3) tar it is reasonable using: the pyrolysis oil for being pyrolyzed generation is back to use in system as binder, not only increases dirt
The processability of mud and biomass, and pyrolysis gas is generated by pyrolysis again, increase heat and more give, resource is whole in realization system
It closes；Meanwhile the specific surface area that can increase charcoal is precipitated in a large amount of of tar, improves charcoal performance；
(4) charcoal reusing plan: the bulky grain charcoal that pyrolysis generates is spiked into material, and life on the one hand can be achieved
The abundant pyrolysis of object charcoal can also form skeleton in new material, avoid the occurrence of the situation of sludge hard shell package sposh；
(5) desiccation apparatus uses mesh-belt conveying, and is respectively provided with molding machine at every layer, so that material is during transportation
There is no extruding to be bonded to clique problem, and is formed again in dry end, replaces heat-transfer area, can successfully avoid sludge viscous
Area, and realize the rapid draing of sludge；
(6) pyrolysis oven that the present invention uses is using inner cylinder rotating, and outer cylinder is motionless, and side is arranged spaced and parallel point outer tube
The shovelling plate of cloth increases the stirring of material while improving heat transference efficiency, greatly improves heat medium and material
Contact area improves pyrolysis efficiency；
(7) heating carrier recycles in system, high/low temperature cooperation, in addition to a small amount of efflux gas, other thermal loss
It is few, it is pyrolyzed resource utilization in the product realization system of generation, no outlet waste residue, environmental pollution is small.
In another aspect of the invention, soil conditioner is prepared using sludge and biomass the invention proposes a kind of
Method.According to an embodiment of the invention, with reference to Fig. 5-8, this method includes
S100: sludge is mixed with conditioner and carries out conditioning processing
In the step, sludge and conditioner are mixed, sludge after being improved.Inventors have found that by by sludge and adjust
Manage agent mixing, on the one hand, the broken wall of sludge may be implemented in conditioner, improves the dewatering of sludge, to reduce the heat of sludge
On the other hand solving energy consumption can be significantly reduced the leaching content of noble metal in charcoal, to reduce heavy metal in soil to plant
Murder by poisoning.The mass ratio of a specific embodiment according to the present invention, conditioner and over dry sludge is (8~12): 100.Invention
If conditioning agent content is too low shell-broken effect is not achieved, moisture content is higher after filters pressing, increases pyrolysis energy consumption, simultaneously in people's discovery
Moisture content is high in subsequent pyrolysis gas, is unfavorable for later use；And if conditioner too high levels, will lead to subsequent obtained biology
Charcoal pH is excessively high, influences the quality of soil conditioner.Soil conditioner matter can guaranteed using the mixed proportion of the application as a result,
System energy consumption is reduced while amount.Specifically, the moisture content of sludge is 95~97wt%, if the dirt of 80~90wt% of moisture content
Mud is improved again after being then diluted in advance, and the type of conditioner is not particularly restricted, as long as can be realized sludge
Broken wall and reduce Leaching of Heavy Metals, such as can be quick lime.
S200: sludge after conditioning is subjected to filters pressing processing
In the step, sludge after conditioning is subjected to filters pressing processing, obtains filtrate and filters pressing sludge.As a result, by above-mentioned
Sludge is mixed with conditioner in process, realizes the broken wall to sludge, then the part water in sludge can be deviate from through filters pressing processing
Point, to reduce subsequent pyrolyzing sludge process energy consumption.Specifically, filter-pressing device is plate and frame filter press, the pressure of plate and frame filter press
For 1.5~2.5MPa, time of filter pressing is 1~5 hour, and water content is 58~63wt% in obtained filters pressing sludge.
S300: filters pressing sludge is mixed with biomass and tar
In the step, filters pressing sludge is mixed with biomass and tar, obtains mixed material.Inventors have found that logical
It crosses to mix sludge with biomass and be pyrolyzed, on the one hand, the admixture of biomass reduces containing for heavy metal in sludge organism charcoal
Amount increases pyrolysis gas yield, improves thermal energy supply, expands the application range of sludge；On the other hand, the admixture of sludge improves
The density of biomass pyrolytic carbon, is readily transported, meanwhile, the moisture contained in sludge may act as gasifying agent and activator, improve
The specific surface area of charcoal is promoted its water conservation, absorption property, in addition can not only be significantly improved using tar as binder
The processability of sludge and biomass, and the further pyrolysis of tar can produce pyrolytic carbon, and in pyrolytic process, it is burnt
The specific surface area that can increase charcoal is precipitated in a large amount of of oil.Specifically, filters pressing sludge is mixed it with biomass and tar
Before, filters pressing sludge is crushed in advance, obtains the sludge that partial size is not higher than 5 millimeters, is not higher than 10 using the partial size of biomass
Millimeter.The mass ratio of a specific embodiment according to the present invention, butt biomass and over dry sludge is 1:(1~5).Inventor
It was found that the content of beary metal in sludge can be effectively reduced using the mixed proportion, to guarantee the matter of gained soil conditioner
Amount.
S400: mixed material is contacted with dry-heat air and is dried
In the step, mixed material obtained above is exchanged heat with dry-heat air, obtains material after a tail wind and drying.
A specific embodiment according to the present invention, the temperature of dry-heat air are 160~240 degrees Celsius, drying time is 45~
90min, the moisture content of mixed material is 10%~25wt% after drying.
Specifically, drying device is multi-layer forming mesh dryer, including feeding device, conveyer belt and automatic control system
System, feeding device are arranged in the upper end of every layer of conveyer belt, and effect is fed to conveyer belt, and it is uniform to be allowed to thin and thick, in feeding device
It installs molding machine additional, processing and forming is carried out to material, improve drying efficiency, upper layer and middle layer conveyer belt are net belt type, screen distance
Size is 3-5mm, bottom conveyer belt be it is board-like, plate is equipped with the punching of 1.5mm*3mm rectangle, to prevent leak-stopping material；Mixed material
Entering conveyer belt through feeding device, realizes molding and uniform distribution, material follows mesh belt to move in drying machine after drying later,
And with dry-heat air direct contact heat transfer, realize drying.
S500: material after drying is contacted with destructive distillation hot wind and carries out pyrolysis processing
In the step, by material after drying obtained above and destructive distillation hot wind indirect contact heat exchanger, so that mixed material exists
Pyrolytic reaction occurs under the action of destructive distillation hot wind, obtains charcoal, pyrolysis oil gas and destructive distillation cold wind.Specifically, destructive distillation hot wind
Temperature is 700~900 degrees Celsius, and pyrolysis time is 30~90min.
Specifically, pyrolysis installation is double-barrel structure, inner cylinder rotating, outer cylinder remained stationary, and destructive distillation warm-air supply is into inner cylinder
It is flowed in inner cylinder, by being arranged baffle in inner cylinder, such as baffle is handed in inner cylinder along the axial and circumferential interval of inner cylinder
Mistake distribution, so as to increase the contact area of air-flow, improves the heat utilization efficiency of hot wind, and material is in outer cylinder and inner cylinder after drying
It is flowed in interior formation dry place with the rotation of inner cylinder, by arranging shovelling plate, such as shovelling plate inner cylinder on the outer wall of inner cylinder
Be spaced apart on outer wall along the axial and circumferential of inner cylinder, and adjacent two rows of shovelling plate is interspersed, constantly by filters pressing sludge into
Row stirring, and promoted to outlet.
S600: charcoal is subjected to screening process, and bulky grain charcoal is supplied to step S300
In the step, the charcoal that pyrolytic process is obtained carries out screening process, obtains soil conditioner and bulky grain is raw
Substance charcoal, and bulky grain biomass carbon is supplied to mixing device.Specifically, screening plant has cooling system, filled from pyrolysis
The screened device of the charcoal set is cooling and screening, screening obtain charcoal of the partial size lower than 5 millimeters as soil improvement
Agent, and bulky grain charcoal of the partial size not less than 5 millimeters is supplied into mixing device, object not only may be implemented in bulky grain charcoal
The abundant pyrolysis of material, and aggregate can be served as mixed material, accelerate drying efficiency.
It is according to an embodiment of the present invention to prepare the method for soil conditioner by by sludge and adjusting using sludge and biomass
Manage agent mixing, on the one hand, the broken wall of sludge may be implemented in conditioner, improves the dewatering of sludge, to reduce the heat of sludge
On the other hand solving energy consumption can be significantly reduced the leaching content of noble metal in charcoal, to reduce heavy metal in soil to plant
Murder by poisoning, while sludge being mixed with biomass and is pyrolyzed, on the one hand, the admixture of biomass reduces weight in sludge organism charcoal
The content of metal increases pyrolysis gas yield, improves thermal energy supply, expands the application range of sludge；On the other hand, sludge is mixed
Add, improve the density of biomass pyrolytic carbon, be readily transported, in addition, the moisture contained in sludge may act as gasifying agent and activation
Agent improves the specific surface area of charcoal, promotes its water conservation, absorption property.Sludge not only may be implemented using this method as a result,
Resource utilization, and the soil conditioner of high added value can be prepared.
According to an embodiment of the invention, with reference to Fig. 6, it is above-mentioned using sludge and biomass prepare the method for soil conditioner into
One step includes:
S700: a part of a tail wind and destructive distillation cold wind are subjected to air distribution heat exchange, and dry-heat air is supplied to step S400
In the step, a part for a tail wind that drying process obtains is mixed with the destructive distillation cold wind that pyrolytic process obtains
Air distribution obtains dry-heat air, and the drying process that dry-heat air is supplied to step S400 is used as dried medium.As a result,
It can use the waste heat of destructive distillation cold wind and a tail wind use after mixing preheating as dry-heat air, to improve system energy
Resource utilization.Specifically, the temperature of destructive distillation cold wind is 240~450 degrees Celsius, the temperature of obtained dry-heat air is 180~
350 degrees Celsius.
According to an embodiment of the invention, with reference to Fig. 7, it is above-mentioned using sludge and biomass prepare the method for soil conditioner into
One step includes:
S800: pyrolysis oil gas is subjected to isolation of purified processing, and pyrolysis oil is supplied to step S300
In the step, the pyrolysis oil gas that pyrolytic process is obtained carries out isolation of purified, obtains pyrolysis oil and pyrolysis gas, and will
Pyrolysis oil is supplied into the mixing process of step S300 to be used as binder.Inventors have found that by using pyrolysis oil as viscous
Knot agent is back to use in mixing device, not only increases the processability of sludge and biomass, and generate pyrolysis by pyrolysis again
Gas increases heat supply, resource consolidation in realization system；Meanwhile the specific surface that can increase charcoal is precipitated in a large amount of of pyrolysis oil
Product improves charcoal performance.Specifically, oil gas purification separation device can be that pyrolysis Oil-gas Separation may be implemented in the prior art
And any equipment of purification, such as may include spray column, oil water separator and pyrolysis air purifying apparatus, by pyrolysis oil gas through spraying
After drenching tower spray, so that pyrolysis gas is separated, and obtained oil water mixture settle and separate in oil water separator, then adopt
Pyrolysis gas is purified with desulfurizing tower etc..
According to an embodiment of the invention, with reference to Fig. 8, it is above-mentioned using sludge and biomass prepare the method for soil conditioner into
One step includes:
S900: fuel and air are mixed and burned
In the step, fuel is mixed with air and is burnt, obtains high-temperature flue gas.Specifically, fuel can be biology
Matter, and can according to need supplement clean fuel, such as coal gas etc. after natural gas, synthesis gas, purification.
S1000: high-temperature flue gas and pyrolysis gas are mixed with air and burnt
In the step, the pyrolysis gas and air and high-temperature flue gas that Oil-gas Separation purification process is obtained are mixed and burned, and are obtained
Flue gas after burning.It is mixed and burned specifically, being supplied by the high-temperature flue gas for obtaining combustion chamber to dual firing chamber and pyrolysis gas,
Temperature obtains temperature more so as to decompose the toxic components such as the dioxin in high-temperature flue gas higher than combustion chamber in dual firing chamber
Flue gas after the high and burning without toxic component.
S1100: flue gas after another part of tail gas and burning is subjected to air distribution heat exchange, and by destructive distillation warm-air supply to step
S500
In the step, flue gas after the burning for the high temperature that the another part for a tail wind that drying device obtains and dual firing chamber are obtained
Air distribution heat exchange is carried out, obtains destructive distillation hot wind, and obtained destructive distillation warm-air supply is used to pyrolysis installation as dry distillation medium.
Below with reference to specific embodiment, present invention is described, it should be noted that these embodiments are only to describe
Property, without limiting the invention in any way.
Embodiment 1
The quick lime that over dry sludge 10wt% is added in the municipal sludge of moisture content 97% is improved, passes through sludge later
Pump squeeze into plate and frame filter press, under 1.5MPa pressure filters pressing 4h obtain water content 60% sludge bulking, by be crushed to≤5mm after
It mixes, and is stirred continuously with tar and biomass (≤10mm) into mixing pond, obtain uniform mixed material, wherein over dry
The quality proportioning of sludge and dry based biomass is 4:1；Mixed material enters conveying after feeding device molding on drying device
Belt, dry 60min, obtains mixed material after the drying of a tail wind and moisture content 17.2% under 240 degrees Celsius of dry-heat air,
Mixed material is fed directly to pyrolysis installation after drying, using 900 degrees Celsius of destructive distillation hot wind indirect heating 30min, generates biology
Charcoal, pyrolysis oil gas and 450 degrees Celsius of destructive distillation cold wind, then sieve charcoal, and obtained partial size is lower than 5 millimeters of life
Object charcoal is as soil conditioner (far below the secondary standard of planting technique soil and farming land soil control mark in addition to Cd, Zn
Standard, all indexs control standard far below betterment of land sludge shale standard and farming land sludge pollution object), and partial size is not low
It supplies in 5 millimeters of bulky grain charcoals into mixing pond, obtained pyrolysis oil gas is pyrolyzed through oil-water separation purification device
Gas and pyrolysis oil, pyrolysis oil are supplied to mixing pond and to be used as binder, and a part of a tail wind and destructive distillation cold wind are supplied to matching
Air distribution exchanges heat in air compartment, obtains 160 degrees Celsius of dry-heat air and supply to drying device to use as dried medium, by biomass
The high-temperature flue gas and isolated pyrolysis gas obtained in combustion chambers burn burns in dual firing chamber, obtains 900 degrees Celsius of combustion
Flue gas is supplied to drying device and to be used as destructive distillation hot wind after burning.
The content of organic matter of obtained soil conditioner is 530g/kg, available nitrogen 126mg/kg, rapid available phosphorus 248mg/
Kg, wherein content of beary metal and relevant standard value are shown in Table 1.Listed standard is respectively standard 1: planting technique Soil standard (CJ/
T340-2001), standard 2: the betterment of land sludge shale standard (CJ/T291-2008), standard 3: agricultural sludge pollutant control
Standard (GB4284-2018) processed and standard 4: agricultural soil risk management and control standard (GB15618-2018).
The content of beary metal (mg/kg) in soil conditioner that 1 embodiment 1 of table obtains
Embodiment 2
The sludge of moisture content 80% is diluted with water to 95%, the quick lime that over dry mud 10% is added later is improved,
Plate and frame filter press is squeezed by sludge pump afterwards, filters pressing 4h obtains the sludge bulking of water content 60% under 1.5MPa pressure, by broken
Be broken to≤5mm after enter mixing pond and mixed with tar and biomass (≤10mm), and be stirred continuously, obtain uniform mixture
Material, wherein the quality proportioning of over dry sludge and dry based biomass is 2:1；Mixed material is formed through feeding device on drying device
Enter conveyor belt afterwards, dry 60min, obtains the drying of a tail wind and moisture content 16.3% under 200 degrees Celsius of dry-heat air
Mixed material afterwards, mixed material is fed directly to pyrolysis installation after drying, using 800 degrees Celsius of destructive distillation hot wind indirect heating
45min generates charcoal, pyrolysis oil gas and 327 degrees Celsius of destructive distillation cold wind, then sieves to charcoal, obtained grain
Charcoal of the diameter lower than 5 millimeters (is far below the secondary standard and agriculture of planting technique soil as soil conditioner in addition to Cd, Zn
Land used soil manages standard, and all indexs are far below betterment of land sludge shale standard and farming land sludge pollution object control mark
It is quasi-), and bulky grain charcoal of the partial size not less than 5 millimeters is supplied into mixing pond, obtained pyrolysis oil gas is net through water-oil separating
Makeup sets to obtain pyrolysis gas and pyrolysis oil, and pyrolysis oil is supplied to mixing pond and to be used as binder, by a part of a tail wind with do
It evaporates cold wind and supplies into distribution plenum air distribution heat exchange, obtain 200 degrees Celsius of dry-heat air and supply to drying device as dry Jie
Matter uses, and the high-temperature flue gas and isolated pyrolysis gas that biomass is obtained in combustion chambers burn burn in dual firing chamber, obtains
Flue gas is supplied to drying device and to be used as destructive distillation hot wind after to 900 degrees Celsius of burnings.
Content of beary metal and relevant standard value are shown in Table 2 in obtained soil conditioner.Listed standard is respectively standard 1: greening
Planting soil standard (CJ/T 340-2001), standard 2: betterment of land sludge shale standard (CJ/T291-2008) and mark
Standard 3: agricultural sludge pollutant catabolic gene standard (GB4284-2018)
The content of beary metal (mg/kg) in soil conditioner that 2 embodiment 2 of table obtains
Embodiment 3
The sludge of moisture content 80% is diluted with water to 95%, after the quick lime of addition over dry mud 10% is improved later
Plate and frame filter press is squeezed by sludge pump, filters pressing 4h obtains the sludge bulking of water content 60% under 1.5MPa pressure, by broken
Enter mixing pond after extremely≤5mm to mix with tar and biomass (≤10mm), and be stirred continuously, obtains uniform mixture
Material, wherein the quality proportioning of over dry sludge and dry based biomass is 1:1；Mixed material is formed through feeding device on drying device
Enter conveyor belt afterwards, dry 45min, obtains the drying of a tail wind and moisture content 11.8% under 240 degrees Celsius of dry-heat air
Mixed material afterwards, mixed material is fed directly to pyrolysis installation after drying, using 850 degrees Celsius of destructive distillation hot wind indirect heating
60min generates charcoal, pyrolysis oil gas and 354 degrees Celsius of destructive distillation cold wind, then sieves to charcoal, obtained grain
Charcoal of the diameter lower than 5 millimeters (is far below the secondary standard and agriculture of planting technique soil as soil conditioner in addition to Cd, Zn
Land used soil manages standard, and all indexs are far below betterment of land sludge shale standard and farming land sludge pollution object control mark
It is quasi-), and bulky grain charcoal of the partial size not less than 5 millimeters is supplied into mixing pond, obtained pyrolysis oil gas is net through water-oil separating
Makeup sets to obtain pyrolysis gas and pyrolysis oil, and pyrolysis oil is supplied to mixing pond and to be used as binder, by a part of a tail wind with do
It evaporates cold wind and supplies into distribution plenum air distribution heat exchange, obtain 240 degrees Celsius of dry-heat air and supply to drying device as dry Jie
Matter uses, and the high-temperature flue gas and isolated pyrolysis gas that biomass is obtained in combustion chambers burn burn in dual firing chamber, obtains
Flue gas is supplied to drying device and to be used as destructive distillation hot wind after to 900 degrees Celsius of burnings.
Wherein content of beary metal and relevant standard value are shown in Table 3 to obtained soil conditioner.Listed standard is respectively standard 1: green
Change planting soil standard (CJ/T 340-2001), standard 2: betterment of land sludge shale standard (CJ/T291-2008) and
Standard 3: agricultural sludge pollutant catabolic gene standard (GB4284-2018)
The content of beary metal (mg/kg) in soil conditioner that 3 embodiment 2 of table obtains
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of system for preparing soil conditioner using sludge and biomass characterized by comprising
Conditioning device, sludge outlet after the conditioning device has sludge inlet, conditioner entrance and improves；
Filter-pressing device, the filter-pressing device has sludge inlet, filtrate (liquid and filters pressing sludge outlet after conditioning, after the conditioning
Sludge inlet is connected with sludge outlet after the conditioning；
Mixing device, the mixing device have filters pressing sludge inlet, biomass inlet, tar entrance and mixed material outlet,
The filters pressing sludge inlet is connected with the filters pressing sludge outlet；
Drying device, material goes out after there is the drying device mixed material entrance, dry-heat air entrance, a tail wind to export and is dry
Mouthful, the mixed material entrance is connected with mixed material outlet；
Pyrolysis installation, the pyrolysis installation have material inlet, destructive distillation hot-wind inlet, charcoal outlet, pyrolysis oil gas vent, do
Cold wind outlet is evaporated, the material inlet is connected with material outlet after the drying；
Screening plant, the screening plant has charcoal entrance, soil conditioner outlet and the outlet of bulky grain charcoal, described
Charcoal entrance is connected with charcoal outlet, and the bulky grain charcoal outlet is connected with the biomass inlet.
2. system according to claim 1, which is characterized in that further comprise:
First distribution plenum, first distribution plenum has the first a tail wind entrance, destructive distillation cold air inlet and dry-heat air outlet, described
First a tail wind entrance is connected with a tail wind outlet, and the destructive distillation cold air inlet is connected with destructive distillation cold wind outlet, described dry
Dry hot-blast outlet is connected with the dry-heat air entrance.
3. system according to claim 1, which is characterized in that further comprise:
Oil-gas Separation purification device, the Oil-gas Separation purification device have pyrolysis oil gas entrance, pyrolysis oil export and pyrolysis gas
Outlet, the pyrolysis oil gas entrance are connected with the pyrolysis oil gas vent, and the pyrolysis oil export is connected with the tar entrance.
4. system according to claim 3, which is characterized in that further comprise:
Combustion chamber, the combustion chamber have fuel inlet, the first air intake and high-temperature flue gas outlet；
Dual firing chamber, the dual firing chamber go out with flue gas after pyrolysis gas entrance, second air intake, high-temperature flue gas entry and burning
Mouthful, the pyrolysis gas entrance is connected with the pyrolysis gas outlet, and the high-temperature flue gas entry is connected with the high-temperature flue gas outlet；
Second distribution plenum, second distribution plenum have smoke inlet and destructive distillation hot-blast outlet after the second a tail wind entrance, burning, institute
The second a tail wind entrance to be stated to be connected with a tail wind outlet, smoke inlet is connected with exhanst gas outlet after the burning after the burning,
The destructive distillation hot-blast outlet is connected with the destructive distillation hot-wind inlet.
5. system according to claim 1, which is characterized in that the pyrolysis installation includes:
Inner cylinder, the inner cylinder drives rotatable setting by the driver, and the inner wall of the inner cylinder is equipped with baffle, outer wall
Equipped with shovelling plate, the destructive distillation hot-wind inlet and destructive distillation cold wind outlet are located on the inner cylinder；
Outer cylinder, the outer cylinder are set on the inner cylinder, and form dry place between the outer cylinder and the inner cylinder, described
Material inlet, charcoal outlet and the pyrolysis oil gas vent are located on the outer cylinder.
6. a kind of method for preparing soil conditioner using sludge and biomass characterized by comprising
(1) sludge is mixed with conditioner and carries out conditioning processing, so as to sludge after being improved；
(2) sludge after the conditioning is subjected to filters pressing processing, to obtain filtrate and filters pressing sludge；
(3) the filters pressing sludge is mixed with biomass and tar, to obtain mixed material；
(4) mixed material is contacted with dry-heat air and is dried, to obtain material after a tail wind and drying；
(5) material after the drying is contacted with destructive distillation hot wind and carries out pyrolysis processing, to obtain charcoal, pyrolysis oil gas and to do
Evaporate cold wind；
(6) charcoal is subjected to screening process, to obtain soil conditioner and bulky grain charcoal, and by described big
Grain charcoal is supplied into step (3).
7. according to the method described in claim 6, it is characterized in that, further comprising:
(7) a part of a tail wind and the destructive distillation cold wind are subjected to air distribution heat exchange, to obtain dry-heat air, and will be described
Dry-heat air is supplied into step (4).
8. according to the method described in claim 6, it is characterized in that, further comprising:
(8) the pyrolysis oil gas is subjected to isolation of purified processing, to obtain pyrolysis oil and pyrolysis gas, and by the pyrolysis oil gas
Supply is into step (3).
9. according to the method described in claim 8, it is characterized in that, further comprising:
(9) fuel and air are mixed and burned, to obtain high-temperature flue gas；
(10) high-temperature flue gas and the pyrolysis gas are mixed with air and is burnt, so as to flue gas after being burnt；
(11) flue gas after another part of the tail gas and burning is subjected to air distribution heat exchange, to obtain destructive distillation hot wind, and by institute
Destructive distillation warm-air supply is stated into step (5).
10. according to the method described in claim 6, it is characterized in that, in step (1), the conditioner and over dry sludge
Mass ratio is (8~12): 100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088143.5A CN109652090A (en) | 2019-01-29 | 2019-01-29 | The system and method for soil conditioner is prepared using sludge and biomass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910088143.5A CN109652090A (en) | 2019-01-29 | 2019-01-29 | The system and method for soil conditioner is prepared using sludge and biomass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109652090A true CN109652090A (en) | 2019-04-19 |
Family
ID=66120901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910088143.5A Pending CN109652090A (en) | 2019-01-29 | 2019-01-29 | The system and method for soil conditioner is prepared using sludge and biomass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109652090A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234838A (en) * | 2020-03-24 | 2020-06-05 | 圣清环保股份有限公司 | System and method for preparing soil conditioner |
| CN111253033A (en) * | 2020-03-12 | 2020-06-09 | 北京云水浩瑞环境科技有限公司 | System and method for mobile treatment of sludge in villages and towns |
| CN111303886A (en) * | 2020-03-24 | 2020-06-19 | 圣清环保股份有限公司 | Soil conditioner preparation system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203487018U (en) * | 2013-07-30 | 2014-03-19 | 广东省环境科学研究院 | Deep treatment device for sludge |
| CN105731752A (en) * | 2016-04-29 | 2016-07-06 | 东北大学 | Method for preparing biochar by carrying out copyrolysis on excess sludge and hazelnut shell |
| CN106746468A (en) * | 2017-01-25 | 2017-05-31 | 云南水务投资股份有限公司 | A kind of sludge treating system and handling process |
| CN107324941A (en) * | 2017-06-12 | 2017-11-07 | 四川雷鸣环保装备有限公司 | Municipal sludge charcoal base composite fertilizer and biological fuel gas joint production process |
| CN107986592A (en) * | 2017-12-28 | 2018-05-04 | 北京神源环保有限公司 | A kind of copyrolysis system and method for microalgae biomass and sludge |
-
2019
- 2019-01-29 CN CN201910088143.5A patent/CN109652090A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203487018U (en) * | 2013-07-30 | 2014-03-19 | 广东省环境科学研究院 | Deep treatment device for sludge |
| CN105731752A (en) * | 2016-04-29 | 2016-07-06 | 东北大学 | Method for preparing biochar by carrying out copyrolysis on excess sludge and hazelnut shell |
| CN106746468A (en) * | 2017-01-25 | 2017-05-31 | 云南水务投资股份有限公司 | A kind of sludge treating system and handling process |
| CN107324941A (en) * | 2017-06-12 | 2017-11-07 | 四川雷鸣环保装备有限公司 | Municipal sludge charcoal base composite fertilizer and biological fuel gas joint production process |
| CN107986592A (en) * | 2017-12-28 | 2018-05-04 | 北京神源环保有限公司 | A kind of copyrolysis system and method for microalgae biomass and sludge |
Non-Patent Citations (1)
| Title |
|---|
| 孙传伯, 合肥工业大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111253033A (en) * | 2020-03-12 | 2020-06-09 | 北京云水浩瑞环境科技有限公司 | System and method for mobile treatment of sludge in villages and towns |
| CN111234838A (en) * | 2020-03-24 | 2020-06-05 | 圣清环保股份有限公司 | System and method for preparing soil conditioner |
| CN111303886A (en) * | 2020-03-24 | 2020-06-19 | 圣清环保股份有限公司 | Soil conditioner preparation system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109652090A (en) | The system and method for soil conditioner is prepared using sludge and biomass | |
| CN110240386A (en) | A kind of stalk cooperates with the devices and methods therefor of processing with sludge | |
| CN104560072B (en) | Thermal decomposition of organic wastes system and method for pyrolysis | |
| JP4539329B2 (en) | Reduced pressure continuous pyrolysis apparatus and reduced pressure continuous pyrolysis method | |
| CN109647341A (en) | The system and method for preparing adsorbent material using sludge | |
| CN109721442A (en) | A kind of system and method preparing oil, gas and charcoal base manure using agricultural-forestry biomass Poly-generation | |
| CN103524008B (en) | Automatic processing handling process for zero discharge of sludge for urban sewage plant | |
| CN105778945B (en) | It is pyrolyzed the system and method for biomass | |
| CN106694538A (en) | System and method for repairing organic contaminated soil through sludge microwave gasification residues in targeting mode | |
| CN111778047A (en) | Pyrolysis carbonization equipment and method for treating agricultural wastes and household garbage | |
| CN102092709A (en) | Combined biomass particle carbonization furnace and carbonizing method thereof | |
| CN213803638U (en) | Efficient and environment-friendly biochar preparation equipment | |
| CN109647863A (en) | The system and method for handling house refuse | |
| CN109652091A (en) | The system and method for preparing soil conditioner using sludge and kitchen garbage | |
| CN205635474U (en) | Organic garbage pyrolytic system | |
| KR20050003162A (en) | Sluge Carbonization Fiting | |
| CN207413986U (en) | A kind of vehicle-mounted movable stalk and waste plastics mulch while continuous processing system | |
| CN206483805U (en) | The system that a kind of sludge microwave residue after gasifying targets renovation of organic pollution soil | |
| CN210001814U (en) | System for utilize mud and living beings preparation soil amendment | |
| CN109701996A (en) | The system and method for handling house refuse | |
| CN205635472U (en) | Organic garbage pyrolytic system | |
| KR100768485B1 (en) | Method and apparatus for drying and carbonizing untreated waste materials | |
| CN107906529A (en) | A kind of double back rotary kiln pyrolysis system and method | |
| CN209652221U (en) | The system for preparing soil conditioner using sludge and kitchen garbage | |
| CN209613778U (en) | The system for handling house refuse |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |