CN107513392A - It is a kind of to handle house refuse and the system and method for sewage sludge - Google Patents
It is a kind of to handle house refuse and the system and method for sewage sludge Download PDFInfo
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- CN107513392A CN107513392A CN201710948603.8A CN201710948603A CN107513392A CN 107513392 A CN107513392 A CN 107513392A CN 201710948603 A CN201710948603 A CN 201710948603A CN 107513392 A CN107513392 A CN 107513392A
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- pyrolysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
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- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Treatment Of Sludge (AREA)
Abstract
The present invention relates to processing house refuse and the system and method for sewage sludge.In the pyrolysis unit of the system, pyrolysis installation has charging aperture, pyrolysis oil gas vent, pyrolytic carbon outlet；It is pyrolyzed in oil vapor treatment unit, gas and oil separating plant has pyrolysis oil gas entrance, pyrolysis gas outlet, pyrolysis oil export, and pyrolysis oil gas entrance is connected with pyrolysis oil gas vent；Oily-water seperating equipment has pyrolysis oil-in, tar outlet, outlet of sewer, and pyrolysis oil-in is connected with pyrolysis oil export；Vaporising device has sewage inlet, steam outlet, the outlet of sewage concentration liquid, and sewage inlet is connected with outlet of sewer；In pyrolytic carbon processing unit, cooling device has pyrolytic carbon entrance, steam entry, the outlet of cooling pyrolytic carbon, steam outlet, and pyrolytic carbon entrance is connected with pyrolytic carbon outlet, and steam entry is connected with steam outlet.The present invention can obtain the pyrolysis gas, tar, the pyrolytic carbon energy of high heating value, and yield is higher, and the energy consumption and operating cost of system are relatively low.
Description
Technical field
The present invention relates to Waste Disposal Technology field, and in particular to a kind of to handle house refuse and the system of sewage sludge
And method.
Background technology
With concern of the expansion and people in city to environmental protection, how to successfully manage growing house refuse and
Sewage sludge turn into one it is most important the problem of.At present, about 2.5 hundred million tons of China's house refuse annual production, sewage sludge
Annual production up to 30,000,000 tons, house refuse with sewage sludge containing substantial amounts of heavy metal (such as As, Cd, Cr, Hg, Pb, Cu, Zn,
Ni), virus, pathogenic bacteria, worm's ovum and difficult degradation toxic organic compound, if handling not in time, it is easy to serious two are caused to environment
Secondary pollution.
On house refuse and the handling problems of sewage sludge, national governments be all distinctly claimed follow minimizing, stabilisation,
Recycling, innoxious principle.At present, conventional refuse processing method has landfill, burning etc..The advantages of landfill method is method
Simply, treating capacity is big, management operating expense is low；Shortcoming is that floor space is big, easily causes effusion contaminated soil and water resource.Burn
Burning method is a kind of high temperature hot chemical treatment technology, can effectively realize volume reduction, the decrement of discarded object in city, and carries out recycling
Utilize；But this method has higher requirement to house refuse raw material, it usually needs carries out pre-treatment to rubbish, mixes some heat
The higher fuel of value, and the one-time investment of incineration plant is huge, and operating cost is high, easily produces secondary pollution, limits
The development of burning method.
Pyrolysis of waste technology is a kind of processing method environment-friendly, efficiency is higher.At present, pyrolytic technique has turned into useless
Waste resource utilizes one of advocated important method, especially in house refuse and sewage sludge disposal and recycling
Aspect, pyrolytic technique is one of innovative technology that national policy emphasis is encouraged, because its potential industrial prospect is very by people
Concern.All volatile matter containing high content in sludge and house refuse, pyrolysis characteristicses are preferable, not only can be real using pyrolytic technique
Safe, economic, the reasonable disposal of existing sludge, and the energy product of value can also be obtained, as absorption property is good
Crack charcoal, the bio oil of high heating value and the relatively low pyrolysis gas of harmfulness.So to sewage sludge and the copyrolysis of house refuse
Technology carries out in-depth study, and the exploitation of recycling and biomass energy to discarded object all has far-reaching significance.
The problems such as house refuse and sewage sludge generally existing yield in China Small Urban are small, distribution is scattered, it is existing
Technology is difficult to the cooperative disposal of house refuse and sewage sludge, and is unable to reach required treatment scale.Due to being pyrolyzed skill
Art has the advantages for the treatment of scale is flexible, and spatter property is high, can be effective by the collaboration pyrolysis processing of house refuse and sewage sludge
Solves above-mentioned problem.
The content of the invention
The present invention is intended to provide a kind of new processing house refuse and the system and method for sewage sludge, utilize rubbish and dirt
Acted synergistically present in mud pyrolytic process, reduce pyrolysis difficulty, obtained pyrolysis hydrocarbon yield is high, quality is excellent, and sewage is entered
Row evaporation, gasification process, fully recycle waste heat, reduce processing energy consumption, saved cost.
House refuse and the system of sewage sludge are handled the invention provides a kind of, the system includes pyrolysis unit, heat
Solve oil vapor treatment unit, pyrolytic carbon processing unit.
The pyrolysis unit includes pyrolysis installation, and there is the pyrolysis installation charging aperture, pyrolysis oil gas vent, pyrolytic carbon to go out
Mouthful.
The pyrolysis oil vapor treatment unit includes gas and oil separating plant, oily-water seperating equipment, vaporising device.The oil gas point
There is pyrolysis oil gas entrance, pyrolysis gas outlet, pyrolysis oil export, the pyrolysis oil gas entrance and the pyrolysis installation from device
It is pyrolyzed oil gas vent connection.The oily-water seperating equipment has pyrolysis oil-in, tar outlet, outlet of sewer, the pyrolysis oil
Entrance is connected with the pyrolysis oil export of the gas and oil separating plant.The vaporising device has sewage inlet, steam outlet, dirt
Concentrated liquid is exported, and the sewage inlet is connected with the outlet of sewer of the oily-water seperating equipment.
The pyrolytic carbon processing unit includes cooling device, the cooling device have pyrolytic carbon entrance, steam entry,
Cool pyrolytic carbon outlet, steam outlet, and the pyrolytic carbon outlet of the pyrolytic carbon entrance and the pyrolysis installation connects, the water
Steam inlet is connected with the steam outlet of the vaporising device.
Further, the pyrolytic carbon processing unit includes gasification installation, and there is the gasification installation cooling pyrolytic carbon to enter
Mouth, sewage concentration liquid entrance, coal entrance, the outlet of gasification gas, also, the vaporising device is additionally provided with gasification gas entrance.Institute
The cooling pyrolytic carbon outlet of the cooling pyrolytic carbon entrance and the cooling device of stating gasification installation connects, the dirt of the gasification installation
The sewage concentration liquid outlet of concentrated liquid entrance and the vaporising device connects, the gasification gas outlet of the gasification installation with it is described
The gasification gas entrance connection of vaporising device.
Further, the pyrolytic carbon processing unit includes residual heat using device, and the residual heat using device has water steaming
Vapour entrance, air intake, hot air outlet slit, condensation-water drain, the steam entry of the residual heat using device with it is described cold
But the steam outlet connection of device, also, the condensation-water drain is nature open type.
As the one of which embodiment of the present invention, said system also includes feed material preparation units, and the raw material is pre-
Processing unit includes device for drying house refuse, sludge drying device, the device for drying house refuse and sludge drying
Device is respectively provided with air inlet, discharging opening, and the air inlet is connected with the hot air outlet slit of the residual heat using device, described
Charging aperture of the discharging opening with the pyrolysis installation is connected, also, the discharge outlet is provided with feed and claimed.
Further, the feed material preparation units include mixing arrangement, and the mixing arrangement has feed(raw material)inlet, mixing
Material outlet, the feed(raw material)inlet are connected with the discharging opening of the device for drying house refuse, sludge drying device, the compound
Outlet is connected with the charging aperture of the pyrolysis installation.
Further, the pyrolysis oil vapor treatment unit includes gas cleaning plant, and the gas cleaning plant has heat
Vent one's spleen entrance, purification pyrolysis gas outlet, also, the pyrolysis installation be additionally provided with purification pyrolysis gas entrance.The gas purification
The pyrolysis gas entrance of device is connected with the pyrolysis gas outlet of the gas and oil separating plant, the purification pyrolysis of the gas cleaning plant
Gas outlet is connected with the purification pyrolysis gas entrance of the pyrolysis installation.
The invention also provides a kind of house refuse and the method for sewage sludge, including step are handled using said system：
A, it is (1 according to mass ratio by house refuse and sludge:3)~(2:1) it is sent into the pyrolysis installation and is pyrolyzed,
It is 400~550 DEG C of pyrolytic carbon to obtain being pyrolyzed the mixture of oil gas and temperature.
B, the mixture of the obtained pyrolysis oil gas of step A is sent into the gas and oil separating plant and carries out oil gas point
From, obtain pyrolysis oil and pyrolysis gas, the pyrolysis oil be sent into the oily-water seperating equipment through stratification, obtain tar and
Sewage, sewage is sent into the vaporising device and is evaporated concentration, it is 150~300 DEG C to obtain sewage concentration liquid and temperature
The water vapour of overheat.
C, the step A pyrolytic carbon and step the B water vapour are sent into the cooling device, the water vapour
By the pyrolytic carbon cooling down to 150 DEG C, the pyrolytic carbon that cools is obtained.
As the one of which embodiment of the present invention, the water vapour that step C is obtained is used to heat air, obtains
Hot air, and using the hot air drying house refuse and sludge, sewage caused by drying course is sent into the steaming
In transmitting apparatus.
Further, the cooling pyrolytic carbon and one that the sewage concentration liquid and step C step B obtained obtains
Quantitative coal is sent into gasification installation and carries out gasification reaction, and obtained gasification pneumatic transmission enters the vaporising device and is used to be concentrated by evaporation
Sewage.
Further, for the pyrolysis gas that step B is obtained after drying, decoking processing, it is 3000~4500kCal/ to obtain calorific value
Nm3Purification pyrolysis gas, also, the purification pyrolysis gas is back to heat accumulation type radiant tube in the pyrolysis installation.Control
The temperature of the pyrolytic process is 500~700 DEG C.
The present invention can not only realize a variety of discarded objects mixed pyrolysis processing, while can produce high heating value pyrolysis gas,
The artificial sources such as tar, pyrolytic carbon.The pyrolytic process of the present invention make use of rubbish and synergy during pyrolyzing sludge, by excellent
Change the proportioning of rubbish and sludge, improve the yield and quality of pyrolysis gas.In the system of the present invention, the processing to sewage is using steaming
Hair concentration and the method for gasification, realize the cleaning discharge of sewage.
Also, in the processing procedure of the present invention, purification pyrolysis gas and gasification is respectively adopted in pyrolysis installation and vaporising device
Gas, by the way that waste heat is reclaimed, reduces the operating cost and system energy consumption of system as fuel gas.
Brief description of the drawings
Fig. 1 is present invention processing house refuse and the system schematic of sewage sludge.
Fig. 2 is present invention processing house refuse and the method flow schematic diagram of sewage sludge.
Reference in accompanying drawing is：
1- device for drying house refuse；2- sludge drying devices；3- mixing arrangements；4- pyrolysis installations；5- Oil-gas Separations fill
Put；6- cooling devices；7- oily-water seperating equipments；8- tar storage devices；9- vaporising devices；10- gasification installations；11- waste heats profit
Use device；12- gas cleaning plants.
Embodiment
Below in conjunction with drawings and examples, the embodiment of the present invention is described in more details, so as to energy
The advantages of enough more fully understanding the solution of the present invention and its various aspects.However, specific embodiments described below and reality
Example is applied to be for illustrative purposes only, rather than limitation of the present invention.
As shown in figure 1, present invention firstly provides a kind of processing house refuse, the system of sewage sludge, including pyrolysis are single
Member, pyrolysis oil vapor treatment unit, pyrolytic carbon processing unit.As the preferred embodiment of the present invention, the system also includes raw material
Pretreatment unit.
Pyrolysis unit includes pyrolysis installation 4, and for the pyrolysis of house refuse and sludge, it has charging aperture, pyrolysis oil gas
Outlet, pyrolytic carbon outlet.Purification pyrolysis gas entrance is additionally provided with pyrolysis installation 4.In the present invention, pyrolysis installation 4 preferably rotates
Bed pyrolysis installation.
Heat accumulation type radiant tube is provided with the burner hearth of pyrolysis installation 4, is entered by being passed through pyrolysis gas into heat accumulation type radiant tube
Row burning, and provide heat in the form of radiation for pyrolytic process.Using the mode of heating of heat accumulation type radiant tube, it is ensured that store
It will not be in contact between the material in heat supply material and pyrolysis installation 4 in hot type radiant tube, ensure pyrolysis atmosphere not by dry
Disturb.The quantity and arrangement of heat accumulation type radiant tube are not limited in the present invention, based on realization heating purpose.
Being pyrolyzed oil vapor treatment unit includes gas and oil separating plant 5, oily-water seperating equipment 7, vaporising device 9.
Gas and oil separating plant 5 is used to receive the separation that the pyrolysis oil gas being sent into by pyrolysis installation 4 carries out gas mixture, its
With pyrolysis oil gas entrance, pyrolysis gas outlet, pyrolysis oil export.Also, the pyrolysis oil gas entrance of gas and oil separating plant 5 and pyrolysis
The pyrolysis oil gas vent connection of device 4.
Oily-water seperating equipment 7 is used for the pyrolysis oil that reception is sent into by gas and oil separating plant 5 and further separated, and it has
There are pyrolysis oil-in, tar outlet, outlet of sewer.Also, the pyrolysis oil-in of oily-water seperating equipment 7 and gas and oil separating plant 5
Pyrolysis oil export connection.
Vaporising device 9 is used to be concentrated by evaporation sewage, and sewage source can be treatment sewage or by the row of oily-water seperating equipment 7
The sewage gone out, it has sewage inlet, steam outlet, the outlet of sewage concentration liquid.Gasification gas is additionally provided with vaporising device 9 to enter
Mouthful.Also, the sewage inlet of vaporising device 9 is connected with the outlet of sewer of oily-water seperating equipment 7.9 preferred combustion gas of vaporising device is steamed
Transmitting apparatus.
As the preferred embodiment of the invention, pyrolysis oil vapor treatment unit also includes gas cleaning plant 12, for heat
The purification vented one's spleen, it has pyrolysis gas entrance, purification pyrolysis gas outlet.The pyrolysis gas entrance of gas cleaning plant 12 and oil gas point
Pyrolysis gas outlet from device 5 connects.The purification pyrolysis gas of the purification pyrolysis gas outlet and pyrolysis installation 4 of gas cleaning plant 12
Entrance connects.
Further, pyrolysis oil vapor treatment unit also includes tar storage device 8, and for storing tar, it has tar
Entrance.The tar entrance of tar storage device 8 is connected with the tar outlet of oily-water seperating equipment 7.
Pyrolytic carbon processing unit includes cooling device 6, there is pyrolytic carbon entrance, steam entry, cooling pyrolytic carbon to export,
Steam outlet.Also, the pyrolytic carbon outlet of the pyrolytic carbon entrance of cooling device 6 and pyrolysis installation 4 connects, steam entry with
The steam outlet connection of vaporising device 9.
As the preferred embodiment of the invention, pyrolytic carbon processing unit also includes gasification installation 10, for by pyrolytic carbon
Gasification process is carried out with sewage concentration liquid, it has cooling pyrolytic carbon entrance, sewage concentration liquid entrance, coal entrance, gasification gas
Outlet.The cooling pyrolytic carbon outlet of the cooling pyrolytic carbon entrance of gasification installation 10 and cooling device 6 connects.The dirt of gasification installation 10
The sewage concentration liquid outlet of concentrated liquid entrance and vaporising device 9 connects.The outlet of gasification gas and the vaporising device 9 of gasification installation 10
The connection of gasification gas entrance, vaporising device 9 can evaporate sewage using the waste heat for the gas that gasifies.
Further, pyrolytic carbon processing unit also includes residual heat using device 11, for making full use of cooling device more than 6
Heat, it has steam entry, air intake, hot air outlet slit, condensation-water drain.Wherein, condensation-water drain is arranged to certainly
Right open type.The steam entry of residual heat using device 11 is connected with the steam outlet of cooling device 6.
Feed material preparation units include device for drying house refuse 1, sludge drying device 2, are respectively used to house refuse original
The drying of material and sludge raw material.Air inlet, discharging opening are provided with device for drying house refuse 1 and sludge drying device 2, its
In, air inlet is connected with the hot air outlet slit of residual heat using device 11, and discharging opening connects with the charging aperture of pyrolysis installation 4
Connect.That is, device for drying house refuse 1 and sludge drying device 2 can utilize the remaining of the hot air of the discharge of residual heat using device 11
Heat carries out the drying of house refuse and sludge, realizes the recovery of energy.Also, it is provided with feed in discharge outlet to claim, is used for
The house refuse and the amount of sludge that control is sent into pyrolysis installation 4, so as to ensure house refuse and sludge collaboration in pyrolytic process
Effect gives full play to.
As the preferred embodiment of the invention, also include mixing arrangement 3 in feed material preparation units, for filling for raw material
Divide mixing.There is mixing arrangement 3 feed(raw material)inlet, compound to export.The feed(raw material)inlet of mixing arrangement 3 and device for drying house refuse
1st, the discharging opening connection of sludge drying device 2.The compound outlet of mixing arrangement 3 is connected with the charging aperture of pyrolysis installation 4.
As shown in Fig. 2 handle house refuse and the method for sewage sludge, including following step the invention also provides a kind of
Suddenly：
A, it is (1 according to mass ratio by house refuse and sludge:3)~(2:1) after being well mixed, it is sent into pyrolysis installation 4
It is pyrolyzed, obtains being pyrolyzed the mixture and pyrolytic carbon of oil gas, wherein, the temperature of pyrolytic carbon is 400~550 DEG C.Preferably, it is hot
The temperature for solving charcoal is 420~450 DEG C.
In pyrolytic process, it is 500~700 DEG C to control the temperature in pyrolysis installation 4, and pressure is 0~1000Pa pressure-fired
And the condition of anoxybiotic.Preferably, it is 550~600 DEG C to control the temperature in pyrolysis installation 4.House refuse and sludge fill in pyrolysis
Synergy in putting 4 during copyrolysis be present, be (1 by house refuse and the control of the quality proportioning of sludge:3)~(2:1),
Enable the kinetic activation of copyrolysis process to reduce, reduce pyrolysis difficulty, enhance the copyrolysis of house refuse and sludge
Effect, pyrolysis oven energy consumption is saved, and improve the yield and quality of pyrolysis oil gas.
B, the mixture for the pyrolysis oil gas that step A is obtained is sent into gas and oil separating plant 5 and carries out Oil-gas Separation, obtain heat
Solution oil and pyrolysis gas.
Then, pyrolysis oil is sent into oily-water seperating equipment 7 through stratification, obtains tar and sewage.Also, will pyrolysis
Pneumatic transmission enter pyrolysis gas is dried in gas cleaning plant 12, purified treatment, the obtained purification pyrolysis gas such as decoking are returned
With the heat accumulation type radiant tube being passed through in pyrolysis installation 4 carries out combustion heat supplying.Wherein purify the calorific value of pyrolysis gas for 3000~
4500kCal/Nm3。
Tar is sent into tar storage device 8 and stored.By sewage caused by pending sewage and oil water separation process
It is sent into vaporising device 9 and is evaporated concentration, obtains the water vapour of sewage concentration liquid and temperature for 150~300 DEG C of overheat.This
In step, control sewage is concentrated by evaporation more than 10 times.
C, step A pyrolytic carbon and step B water vapour are sent into cooling device 6 and carry out semidry method cooling quenching, water
Pyrolytic carbon cooling down to 150 DEG C, is obtained the pyrolytic carbon that cools by steam.In this step, water vapour will not after pyrolytic carbon is cooled down
It is condensed into water, the moisture in pyrolytic carbon is unlikely to too high.
Wherein, cool temperature≤200 DEG C of pyrolytic carbon.Preferably, cool pyrolytic carbon temperature be 100~150 DEG C.Water steams
Temperature is 100~200 DEG C after vapour cools down pyrolytic carbon.
D, the sewage concentration liquid that step B is obtained and the cooling pyrolytic carbon that step C is obtained are sent into gasification installation 10, and to
A certain amount of coal is added in gasification installation 10 and carries out gasification reaction, the gasification gas for reacting to obtain is back in vaporising device 9, profit
The evaporation and concentration of sewage is carried out with the waste heat of gasification gas.
E, in step C, water vapour is sent into residual heat using device 11 by after pyrolytic carbon cooling down and adds air therein
Heat is to more than 100 DEG C, the hot air after being heated up.Then, hot air is respectively fed into house refuse by blower fan to dry
It is used to dry house refuse and sludge in equipment for drying 1 and sludge drying device 2, and water vapour caused by drying process is sent into and steamed
Further handled in transmitting apparatus 9.
Embodiment 1
It is below 50mm that house refuse, which is sent into, and is crushed to particle diameter in refuse breaking dryer, and is supplied using waste-heat recoverer
Rubbish after the waste heat answered will crush is dried, and makes its moisture content from the near 40wt% of 48wt% (wt% is mass percent), production
Raw waste water is delivered in sewage evaporation inspissator and handled.
Sludge is sent into sludge dryer, and the waste heat supplied using waste-heat recoverer makes its moisture content be dropped from 75wt%
To 40wt%, caused waste water is delivered in sewage evaporation inspissator and handled.
It is well mixed being sent into through the broken, house refuse of drying process and sludge in mixed feeder, is then fed into rotation
It is pyrolyzed in rotated bed pyrolysis oven.Heated in revolving bed pyrolysis oven using heat accumulation type radiant tube, combustion gas used in radiant tube is pyrolysis qi exhaustion
Purification pyrolysis gas after Jiao Ta processing.Wherein, the mass ratio that house refuse mixes with sludge is 1：1.
The pyrolysis temperature for controlling revolving bed pyrolysis oven is 600 DEG C, progress anoxybiotic pyrolysis 45min, 450 DEG C caused by pyrolysis
Pyrolysis gas mixture is discharged by furnace roof gas outlet, is delivered in oil gas cooling tower and is cooled to 80 DEG C rapidly by water Quench, obtains
To pyrolysis gas be further processed as by Pipeline transport to pyrolysis gas decoking tower purifying pyrolysis gas, pyrolysis gas decoking tower can remove
90% tar in pyrolysis gas, can be back to revolving bed pyrolysis oven；Obtained pyrolysis oil water mixture is defeated by pipeline
Oil water separator is delivered to further to handle.Pyrolytic carbon caused by pyrolysis is entered in pyrolytic carbon discharging machine by furnace bottom discharging opening to be located
Reason.
The component for the purification pyrolysis gas for handling to obtain through decoking is as shown in table 1：
Table 1 purifies the component of pyrolysis gas
| Component | H2 | CH4 | CO | CO2 | CnHm | Calorific value/(kcal/kg) |
| Mass content | 39% | 12% | 25% | 22% | 2% | 3140 |
Oil water separator will be divided into 3 layers after oil water mixture standing separation 10h：Top layer is light oil, and centre is water, bottom
For mink cell focus.Top light oil is scraped into oil trap by oil scraping plate, is then delivered to by oil pipeline in tar storage tank；
Water draw-off pump inside oil water separator is adjusted to water and mink cell focus layered position, then water is drawn into hydraulic pipeline, and it is defeated
Deliver in sewage evaporation inspissator；Bottom mink cell focus is pumped into tar storage tank by oil pump.
Pyrolytic carbon discharging machine is discharged pyrolytic carbon from revolving bed pyrolysis oven furnace bottom discharging opening by way of spiral discharging, together
When pyrolytic carbon can be crushed to particle diameter is below 20mm.Pyrolytic carbon discharging machine can be utilized 200 caused by sewage evaporation inspissator
DEG C superheated vapour pyrolytic carbon is cooled to 180 DEG C, and pyrolytic carbon be sent to by material transfer plate gasify and further handle in tower,
Water vapour after cooling enters recovery waste heat in waste-heat recoverer.
Wherein, cool pyrolytic carbon property it is as shown in table 2：
The property of the cooling pyrolytic carbon of table 2
Pyrolytic carbon gasification tower is followed successively by charging hopper, drying and preheating area, gasification zone, combustion chamber, deslagging chamber from top to bottom.Its
In, charging hopper is connected with pyrolytic carbon discharging machine.Coal machine of mending is additionally provided with, pyrolytic carbon and coal are in charging hopper with 5：1 mass ratio
Blend fed to boiler.Drying and preheating area top sidewall is provided with the outlet of gasification gas, is connected by pipeline with sewage evaporation inspissator.Gasification
Area, which is coal, occurs the region of gasification reaction with pyrolytic carbon, and the mean temperature in the area is up to 1000 DEG C, pyrolytic carbon, coal and water vapour
Reaction is produced with CO and H2Based on gasification gas.Sidewall of combustion chamber is provided with concentration liquid atomization device, dense with sewage evaporation by pipeline
Contracting device is connected, and atomizer will spray into combustion chamber after sewage concentration liquid mist, by combustion by the organic pollution in sewage
Exhaustive oxidation is CO2And H2O, while produce a large amount of water vapours and enter gasification zone.
Sewage evaporation inspissator uses regenerative gas evaporator, is the energy by sewage heating evaporation, sewage using the gas that gasifies
Multiple is concentrated by evaporation more than 10 times, caused water vapour is further heated to 200 DEG C by the heat tracing device in evaporator, then
It is delivered to cooling quenching unit reuse.Sewage concentration liquid caused by evaporation is delivered to after collecting in the combustion chamber of pyrolytic carbon gasification tower
Further processing.
The water vapour that the temperature that pyrolytic carbon discharging machine is discharged is 180 DEG C is sent into recovery waste heat in waste-heat recoverer, and profit
Air is heated to more than 100 DEG C with the waste heat of recovery, hot air is then delivered to by refuse breaking dryer by blower fan
Utilized with sludge dryer.
Embodiment 2
The present embodiment and the difference of embodiment 1 are：
Rubbish after drying is entered in revolving bed pyrolysis oven by two chargers respectively with sludge, and sewage sludge feed seat in the plane
In front of the garbage feeding machine, sewage sludge feed rate is 2 times of garbage feeding speed, and the mass ratio of rubbish and sludge is 1：2, enter
After revolving bed pyrolysis oven, the effect of sludge and rubbish layer-by-layer distribution is formed.Compared with Example 1, pyrolysis gas in the present embodiment
Yield improves 2.6%, and calorific value improves 1.17 times, and the concrete component for purifying pyrolysis gas is as shown in table 3.
Table 3 purifies the component of pyrolysis gas
| Component | H2 | CH4 | CO | CO2 | CnHm | Calorific value/(kcal/kg) |
| Mass content | 40% | 14% | 21% | 18% | 7% | 3700 |
Embodiment 3
The present embodiment and the difference of embodiment 1,2 are：
Rubbish after drying first passes through batch mixer with sludge and is well mixed, and the mixed proportion of rubbish and sludge is 1：3, mixing
Material is entered in revolving bed pyrolysis oven by feed screw to be pyrolyzed, and up to 48.7%, calorific value reaches caused pyrolysis gas yield
4400kcal/kg.Specifically, the component of purification pyrolysis gas is as shown in table 4.
Table 4 purifies the component of pyrolysis gas
| Component | H2 | CH4 | CO | CO2 | CnHm | Calorific value/(kcal/kg) |
| Mass content | 38% | 12% | 22% | 20% | 8% | 4400 |
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the field, can also do on the basis of the above description
Go out other various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn
Among the obvious changes or variations that Shen goes out is still in protection scope of the present invention.
Claims (10)
1. a kind of system for handling house refuse and sewage sludge, the system include pyrolysis unit, pyrolysis oil vapor treatment unit,
Pyrolytic carbon processing unit, it is characterised in that
The pyrolysis unit includes pyrolysis installation, and the pyrolysis installation has charging aperture, pyrolysis oil gas vent, pyrolytic carbon outlet；
The pyrolysis oil vapor treatment unit includes gas and oil separating plant, oily-water seperating equipment, vaporising device；The Oil-gas Separation dress
Put with pyrolysis oil gas entrance, pyrolysis gas outlet, pyrolysis oil export, the pyrolysis of the pyrolysis oil gas entrance and the pyrolysis installation
Oil gas vent connects；The oily-water seperating equipment has pyrolysis oil-in, tar outlet, outlet of sewer, the pyrolysis oil-in
It is connected with the pyrolysis oil export of the gas and oil separating plant；The vaporising device has sewage inlet, steam outlet, sewage dense
Contracting liquid is exported, and the sewage inlet is connected with the outlet of sewer of the oily-water seperating equipment；
The pyrolytic carbon processing unit includes cooling device, and the cooling device has pyrolytic carbon entrance, steam entry, cooling
Pyrolytic carbon outlet, steam outlet, the pyrolytic carbon outlet of the pyrolytic carbon entrance and the pyrolysis installation connect, the water vapour
Entrance is connected with the steam outlet of the vaporising device.
2. system according to claim 1, it is characterised in that the pyrolytic carbon processing unit includes gasification installation, described
Gasification installation has cooling pyrolytic carbon entrance, sewage concentration liquid entrance, coal entrance, the outlet of gasification gas, also, the evaporation dress
Put and be additionally provided with gasification gas entrance；The cooling pyrolytic carbon of the cooling pyrolytic carbon entrance and the cooling device of the gasification installation goes out
Mouth connection, the sewage concentration liquid entrance of the gasification installation connect with the sewage concentration liquid outlet of the vaporising device, the gas
Disguise the gasification gas outlet put to be connected with the gasification gas entrance of the vaporising device.
3. system according to claim 1, it is characterised in that the pyrolytic carbon processing unit includes residual heat using device,
The residual heat using device has steam entry, air intake, hot air outlet slit, condensation-water drain, the UTILIZATION OF VESIDUAL HEAT IN
The steam entry of device is connected with the steam outlet of the cooling device, also, the condensation-water drain is opens wide naturally
Formula.
4. system according to claim 3, it is characterised in that also including feed material preparation units, the pretreatment of raw material
Unit includes device for drying house refuse, sludge drying device, the device for drying house refuse and the sludge drying device
Air inlet, discharging opening are respectively provided with, the air inlet is connected with the hot air outlet slit of the residual heat using device, the discharging
Charging aperture of the mouth with the pyrolysis installation is connected, also, the discharge outlet is provided with feed and claimed.
5. system according to claim 4, it is characterised in that the feed material preparation units include mixing arrangement, described
Mixing arrangement has feed(raw material)inlet, compound outlet, and the feed(raw material)inlet fills with the device for drying house refuse, sludge drying
The discharging opening connection put, the compound outlet are connected with the charging aperture of the pyrolysis installation.
6. system according to claim 1, it is characterised in that the pyrolysis oil vapor treatment unit fills including gas purification
Put, the gas cleaning plant has pyrolysis gas entrance, purification pyrolysis gas outlet, also, the pyrolysis installation is additionally provided with only
Change pyrolysis gas entrance；The pyrolysis gas entrance of the gas cleaning plant is connected with the pyrolysis gas outlet of the gas and oil separating plant,
The purification pyrolysis gas outlet of the gas cleaning plant is connected with the purification pyrolysis gas entrance of the pyrolysis installation.
7. a kind of handle house refuse and the method for sewage sludge using any described systems of claim 1-6, its feature exists
In methods described includes step：
A, it is (1 according to mass ratio by house refuse and sludge:3)~(2:1) it is sent into the pyrolysis installation and is pyrolyzed, is obtained
The mixture of pyrolysis oil gas and the pyrolytic carbon that temperature is 400~550 DEG C；
B, the mixture of the obtained pyrolysis oil gas of step A is sent into the gas and oil separating plant and carries out Oil-gas Separation, obtained
To pyrolysis oil and pyrolysis gas, the pyrolysis oil is sent into the oily-water seperating equipment through stratification, obtains tar and sewage,
Sewage is sent into the vaporising device and is evaporated concentration, obtains sewage concentration liquid and temperature as 150~300 DEG C of overheat
Water vapour；
C, the step A pyrolytic carbon and step the B water vapour are sent into the cooling device, the water vapour is by institute
Pyrolytic carbon cooling down is stated to 150 DEG C, obtains the pyrolytic carbon that cools.
8. according to the method for claim 7, it is characterised in that the water vapour for obtaining step C is used to heat air,
Hot air is obtained, and using the hot air drying house refuse and sludge, sewage caused by drying course is sent into institute
State in vaporising device.
9. according to the method for claim 7, it is characterised in that the sewage concentration liquid and step C for obtaining step B obtain
To the cooling pyrolytic carbon and a certain amount of coal be sent into gasification installation in carry out gasification reaction, obtained gasification pneumatic transmission enters
The vaporising device is used to be concentrated by evaporation sewage.
10. according to the method for claim 7, it is characterised in that the pyrolysis gas that step B is obtained through drying, decoking processing after,
It is 3000~4500kCal/Nm to obtain calorific value3Purification pyrolysis gas, also, by it is described purification pyrolysis gas be back to the pyrolysis
Heat accumulation type radiant tube in device；The temperature for controlling the pyrolytic process is 500~700 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710948603.8A CN107513392A (en) | 2017-10-12 | 2017-10-12 | It is a kind of to handle house refuse and the system and method for sewage sludge |
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| CN201710948603.8A CN107513392A (en) | 2017-10-12 | 2017-10-12 | It is a kind of to handle house refuse and the system and method for sewage sludge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975616A (en) * | 2018-08-01 | 2018-12-11 | 启迪桑德环境资源股份有限公司 | Handle the system and method for biomass pyrolytic water |
| CN110078350B (en) * | 2019-06-03 | 2022-01-11 | 北京云水浩瑞环境科技有限公司 | Sludge comprehensive treatment system and method |
| CN116002942A (en) * | 2022-12-02 | 2023-04-25 | 上海悠漪环保科技有限公司 | Sludge treatment system and method |
-
2017
- 2017-10-12 CN CN201710948603.8A patent/CN107513392A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975616A (en) * | 2018-08-01 | 2018-12-11 | 启迪桑德环境资源股份有限公司 | Handle the system and method for biomass pyrolytic water |
| CN110078350B (en) * | 2019-06-03 | 2022-01-11 | 北京云水浩瑞环境科技有限公司 | Sludge comprehensive treatment system and method |
| CN116002942A (en) * | 2022-12-02 | 2023-04-25 | 上海悠漪环保科技有限公司 | Sludge treatment system and method |
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