CN106477848A - The system and method that a kind of recycling sludge is processed - Google Patents
The system and method that a kind of recycling sludge is processed Download PDFInfo
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- CN106477848A CN106477848A CN201611151805.1A CN201611151805A CN106477848A CN 106477848 A CN106477848 A CN 106477848A CN 201611151805 A CN201611151805 A CN 201611151805A CN 106477848 A CN106477848 A CN 106477848A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/22—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of gaseous or liquid organic compounds
- C01B3/24—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of gaseous or liquid organic compounds of hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
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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
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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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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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
- C01B2203/06—Integration with other chemical processes
- C01B2203/062—Hydrocarbon production, e.g. Fischer-Tropsch process
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- 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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Abstract
The invention discloses the system and method that a kind of recycling sludge is processed.This system includes：Desiccation apparatus, have sludge inlet, dewatered sludge outlet, water out, hot water inlet, coolant outlet are dried；Heat accumulating type rotating bed, has feed(raw material)inlet, pyrolysis water out, pyrolysis gas mixture outlet, pyrolytic carbon outlet, and feed(raw material)inlet is connected with the dewatered sludge outlet of desiccation apparatus；Plasma gasification reative cell, has pyrolysis gas mixture entrance, syngas outlet, and pyrolysis gas mixture entrance is connected with the pyrolysis gas mixture outlet of heat accumulating type rotating bed；And purifier, there is synthesis gas entrance, decontaminating syngas outlet, synthesis gas entrance is connected with the syngas outlet of plasma gasification reative cell.The process is simple of the present invention, operating cost are low, resource level high, secondary pollution is little, and are easily achieved industrialization and scale.
Description
Technical field
The invention belongs to solid waste resource recovery process field and in particular to a kind of recycling sludge process system and
Method.
Background technology
At present, common sludge disposal technology has filter pressing, mummification, aerobic compost, anaerobic digestion, burning etc..Wherein, simply
Filter pressing and mummification can only be sludge dewatering to 50%-70%, remaining mud remains a need for a large amount of landfill disposal, only as dirt
The pretreatment of mud uses.The purpose of aerobic compost and anaerobic digestion is all that mud is made organic fertilizer, finally goes out as product
Sell, but contain more poisonous and harmful substance in mud, its product can pollute crops, therefore, it is difficult to Industry Promotion.Common
Although incineration technology has preferable reduction, in burning process, two English can be produced, have a strong impact on resident's body and be good for
Health, Mass disturbance also happens occasionally.
Pyrolytic technique is under conditions of anaerobic or anoxybiotic, and Organic substance is carried out thermal cracking, generates with H2、CH4, based on CO
Fuel gas, the fuel oil of high heating value and part fixed carbon.Plasma gasification technology is to material using plasma flare
Heated, local temperature to more than 5000 DEG C, and can make the temperature of reative cell maintain 1200 DEG C about, can decompose rapidly
The materials such as pyrolysis oil, two English, and produce a large amount of CO, H2Deng synthesis gas.There is little, energy recovery utilization rate height of secondary pollution etc.
Feature.
But in prior art, the pyrolysis oil yield of some mud rotary kiln pyrogenation techniques is more, easily blocking pipeline, corrosion
Equipment etc., frequent parking maintenance, and rear end need complicated oil-water separation and purifier, lead to investment to greatly increase.This
Outward, some mud shaft furnace plasma gasification technology, are directly gasified to mud with plasma torch, due to moisture percentage in sewage sludge relatively
Height, when processing extensive mud, the power of this technique greatly, consumption rate very high, therefore lead to operating cost to increase it is difficult to
Realize industrial applications.
Content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this reason, the present invention
Purpose is the system and method providing a kind of new recycling sludge to process.
Present invention firstly provides the system that a kind of recycling sludge is processed, described system includes：
Desiccation apparatus, have sludge inlet, dewatered sludge outlet, water out, hot water inlet, coolant outlet are dried；
Heat accumulating type rotating bed, has feed(raw material)inlet, pyrolysis water out, pyrolysis gas mixture outlet, pyrolytic carbon outlet, institute
State feed(raw material)inlet to be connected with the dewatered sludge outlet of described desiccation apparatus；
Plasma gasification reative cell, has pyrolysis gas mixture entrance, syngas outlet, described pyrolysis gas mixture
Entrance is connected with the pyrolysis gas mixture outlet of described heat accumulating type rotating bed；And
Purifier, has synthesis gas entrance, decontaminating syngas outlet, described synthesis gas entrance and described plasma gasification
The syngas outlet of reative cell is connected.
In some embodiments of the invention, described system can also include：
Methanation device, has decontaminating syngas entrance, mixed gas outlet and residual gas outlet, described decontaminating syngas
Entrance is connected with the decontaminating syngas outlet of described purifier；And
Segregation apparatuss, have gaseous mixture entrance, methane outlet and residual gas outlet, described gaseous mixture entrance and described first
The mixed gas outlet of alkylation unit is connected.
In some embodiments of the invention, described system also includes coke quenching device, and described coke quenching device has pyrolytic carbon
Entrance, lime-ash outlet, quenching water inlet, described pyrolytic carbon entrance is connected with the pyrolytic carbon outlet of described heat accumulating type rotating bed.
In some embodiments of the invention, the quenching water inlet of described coke quenching device and described desiccation apparatus water is dried
The coolant outlet of outlet and/or described desiccation apparatus is connected.
In some embodiments of the invention, described heat accumulating type rotating bed includes dry section and pyrolysis zone；Described pyrolysis water
Outlet is arranged in the side wall of described dry section end, and described pyrolysis gas mixture outlet is arranged in the top of described pyrolysis zone end
Portion.
Additionally, present invention also offers a kind of utilization said system method of processing mud, methods described includes walking as follows
Suddenly：
Desiccation apparatus described in mud are carried out drying and other treatment, steams the most of moisture in mud, prepared dewatered sludge；
By described dewatered sludge send into described heat accumulating type rotating bed in carry out pyrolysis processing, be obtained pyrolysis gas mixture and
Pyrolytic carbon；
Described for heat solution gas mixture is passed through described plasma gasification reative cell, is obtained and includes CO, H2Synthesis gas；
The described synthesis gas described purifier of feeding is carried out purified treatment, pure CO, H is obtained2Synthesis gas.
In some embodiments of the invention, described synthesis gas is made by methane using nickel-base catalyst.
In some embodiments of the invention, described mud carries out also producing during drying and other treatment water and cooling water is dried,
Water is dried with described and/or described cooling water carries out quenching process to described pyrolytic carbon.
In some embodiments of the invention, at a temperature of 1150 DEG C -1450 DEG C, described solution gas mixture is carried out
Plasma gasification is processed.
In some embodiments of the invention, it is pyrolyzed described mud at a temperature of 650 DEG C -950 DEG C.
The present invention is pyrolyzed to the mud after drying and other treatment using heat accumulating type rotating bed, and using plasma gasification reaction
Gasify to pyrolysis oil gas in room, be dried water, cooling water can as the quenching water of pyrolytic carbon, the synthesis gas yield of acquisition is high,
Calorific value high it is achieved that " innoxious, minimizing, resource " of mud.
Additionally, the process is simple of the present invention, operating cost are low, resource level is high, secondary pollution is little, and it is easily achieved work
Industry and scale.
In the technique that the present invention provides, the low yield of pyrolysis oil, and the yield of synthesis gas is very high, and pipeline will not be occurred to block up
Plug, equipment such as are corroded at the phenomenon, decrease production cost.
In further modified technique, synthesis gas is made for further methane, improves the economic benefit of product.
Brief description
Fig. 1 is the structural representation of the system that one of embodiment of the present invention recycling sludge is processed；
Fig. 2 is that one of embodiment of the present invention processes the process chart of mud using said system.
Specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in more details, so that energy
The advantage enough more fully understanding the solution of the present invention and its various aspects.However, specific embodiments described below and reality
Applying example is only descriptive purpose, rather than limitation of the present invention.
Referring to Fig. 1, the system that the recycling sludge that the present invention provides is processed includes：Desiccation apparatus 1, heat accumulating type rotating bed 2,
Plasma gasification reative cell 3, purifier 4, methanation device 5, segregation apparatuss 6 and coke quenching device 7.
Desiccation apparatus 1 have sludge inlet, dewatered sludge outlet, water out, hot water inlet, coolant outlet are dried.Dry
Gasifying device 1 is contact drying device, and the present invention adopts hot water as medium, carries out contact drying to mud.
Heat accumulating type rotating bed 2, for carrying out pyrolysis processing, preparation pyrolysis oil gas and pyrolytic carbon to mud.Heat accumulating type rotates
Bed 2 has feed(raw material)inlet, pyrolysis water out, pyrolysis gas mixture outlet, pyrolytic carbon outlet, feed(raw material)inlet and desiccation apparatus 1
Dewatered sludge outlet be connected.
Heat accumulating type rotating bed 2 includes dry section and pyrolysis zone.Pyrolysis water out is arranged in the side wall of dry section end, so that
Just it is collected being pyrolyzed when water just produces, reduce system energy consumption；Pyrolysis gas mixture outlet is arranged in pyrolysis zone end
Top, to obtain the pyrolysis oil gas of high-quality；Pyrolytic carbon outlet is arranged in the bottom of pyrolysis zone end, so that discharging.
Sludge moisture content is high, if being directly entered heat accumulating type rotating bed 2, not only can reduce the efficiency of pyrolysis, also can increase system
System energy consumption, leads to operating cost to increase.Additionally, through pyrolysis, these moisture can become vapor, with pyrolysis gas mixture
Enter in follow-up equipment, the carrying out of subsequent technique can be affected.The present invention is provided with desiccation apparatus 1 before heat accumulating type rotating bed 2, and
Pyrolysis water out is arranged on the burner hearth sidewall of the dry section end of heat accumulating type rotating bed 2, efficiently solves this problem.
Heat accumulating type rotating bed 2 specifically includes：Housing, housing forms ring-type furnace chamber, and burner hearth operating condition is pressure-fired；Annular
Furnace bottom, material cloth on ring-shaped furnace bottom, in continuous rotary state；Heat accumulation type radiant tube, multiple described heat accumulation type radiant tube settings
On the internal perisporium of described housing.
Plasma gasification reative cell 3 utilizes the high-temperature gasification effect of plasma torch, so that pyrolysis oil, hydrocarbon gas etc. is occurred
Gasification, restructuring, to obtain CO, H2Deng synthesis gas.
Plasma gasification reative cell 3 has pyrolysis gas mixture entrance, syngas outlet, is pyrolyzed gas mixture entrance
It is connected with the pyrolysis gas mixture outlet of heat accumulating type rotating bed 2.
The present invention due to, before gasification and melting, being first pyrolyzed to mud, therefore, needed for plasma gasification reative cell 3
Plasma flare quantity few, treatment effeciency is high, and operating cost is low.Two or more plasma flare can meet technique will
Ask.
It is miscellaneous that purifier 4 is used for hydrogen sulfide from the synthesis gas that plasma gasification reative cell 3 is discharged for the removing, hydrogen chloride etc.
Matter.Purifier 4 has synthesis gas entrance, decontaminating syngas outlet, the synthesis of synthesis gas entrance and plasma gasification reative cell 3
Gas outlet is connected.
Methanation device 5 has decontaminating syngas entrance, mixed gas outlet and residual gas outlet, decontaminating syngas entrance
It is connected with the decontaminating syngas outlet of purifier 4.
Segregation apparatuss 6 have gaseous mixture entrance, methane outlet and residual gas outlet, gaseous mixture entrance and methanation device
5 mixed gas outlet is connected.
System shown in Fig. 1 also may not include methanation device 5 and segregation apparatuss 6, and synthesis gas can be otherwise utilized, such as makees
Directly burn for fuel, but be made into methane, the economic worth of product can be improved.
Coke quenching device 7 has pyrolytic carbon entrance, lime-ash outlet, quenching water inlet, pyrolytic carbon entrance and heat accumulating type rotating bed 2
Pyrolytic carbon outlet be connected.
Coke quenching device 7 is used for cooling down pyrolytic carbon, and in the system shown in Fig. 1, the quenching water inlet of coke quenching device 7 is filled with mummification
Put 1 water out and coolant outlet are dried.It is arranged so as to can effectively reduce the production cost of whole technique.
It should be noted that quenching water inlet can only with being dried in water out or coolant outlet of desiccation apparatus 1
One is connected it is not limited to the situation shown in Fig. 1.Additionally, system also may not include coke quenching device 7, other modes can be adopted
Glassy state slag is cooled down.
In Fig. 1, plasma gasification reative cell 3 is arranged vertically on the pyrolysis gas mixture outlet of heat accumulating type rotating bed 2
Upper end, pyrolysis gas mixture is passed directly in plasma reative cell 3 without cooling, decreases the loss of heat, improves heat
Utilization rate.Certainly also can be using pyrolysis oil pneumatic transmission being entered in plasma gasification reative cell 3 by the way of heat insulation transportation.Similarly, whole
The transport of individual system storeroom all can be by the way of heat insulation transportation, it is possible to decrease process operation cost.
Fig. 2 is the process chart that one of embodiment of the present invention processes mud, comprises the steps：
Mud drying device 1 is carried out drying and other treatment, steams the most of moisture in mud, prepared dewatered sludge；
Dewatered sludge is sent in heat accumulating type rotating bed 2 and carries out pyrolysis processing, pyrolysis gas mixture and pyrolytic carbon are obtained；
Pyrolysis gas mixture is passed through plasma gasification reative cell 3, is obtained and includes CO, H2Synthesis gas；
Synthesis gas is sent into purifier 4 and carries out purified treatment, pure CO, H is obtained2Synthesis gas.
It is the same as those described above, above-mentioned synthesis gas can be made by methane using nickel-base catalyst, improve the economic worth of product.Ni-based
Catalyst is a kind of methanation catalyst of superior performance, certainly, other catalyst may also be employed and replace, as long as can be by CO, H2
Make methane.
It is the same as those described above, sludge drying also can produce water and cooling water are dried when processing, can be using water be dried, in cooling water
One or more water carries out quenching process to glassy state slag.
The synthesis gas temperature that plasma gasification reative cell 3 obtains is higher, more than 800 DEG C, therefore, it can using described synthesis
This partial heat of gas carries out heat exchange producing steam, finally recycles steam turbine to generate electricity.Because waste heat has carried out effectively utilizes, institute
Higher with the heat utilization efficiency of whole technique.
More CO, H is contained in synthesis gas2Deng combustible gas, and heat accumulation type radiant tube needs to provide heat for pyrolyzing sludge,
Therefore described synthesis gas can be used for heat accumulation type radiant tube combustion heat supplying, reduce process operation cost, reduce pollutant emission.
Certainly, heat accumulation type radiant tube also carries out heat production using electric energy, and this does not need to be particularly limited to.
Preferably, the temperature setting of the heat accumulation type radiant tube of heat accumulating type rotating bed 2 dry section is 350 DEG C -550 DEG C,
Both can guarantee that at a temperature of this that remaining moisture in mud can be evaporated completely, mud will not be made again to be pyrolyzed.Certainly, also may be used
Moisture content according to mud and the drying effect of desiccation apparatus, suitably adjust the temperature of dry section.
Preferably, the temperature setting of the heat accumulation type radiant tube of heat accumulating type rotating bed 2 pyrolysis zone is 650 DEG C -950 DEG C.?
At a temperature of this, mud can be pyrolyzed completely, does not result in the waste of the energy again.Certainly, also dependent on the material composition of mud,
Suitably adjust pyrolysis temperature.
It is the same as those described above, due to, before gasification and melting, being first pyrolyzed to mud, therefore, the temperature of gasification and melting reaction
Do not need too high.Find through many experiments, at a temperature of 1150 DEG C -1450 DEG C, pyrolysis oil gas and pyrolytic carbon are gasified
Melt process.Temperature is too high, wastes the energy.
In the present invention, the pyrolysis oil that mud produces in heat accumulating type rotating bed 2 pyrolysis is little, and the pyrolysis air-fuel mixture being obtained
Hydrocarbon gas content in thing is few, after pyrolysis gas mixture enters plasma gasification reative cell 3, at 1150 DEG C -1450 DEG C
At a temperature of can moment gasified, generate substantial amounts of containing CO, H2Deng synthesis gas, therefore, the yield of synthesis gas is high.And due to
Pyrolysis oil yield is few, the phenomenon such as line clogging, equipment will not be occurred to be corroded, and decreases production cost.
In said system, the beneficial effect of the beneficial effect of each device and the above-mentioned method being processed mud using this system is had
Partly overlap, in order to more succinct, excessively do not describe.
Present invention achieves the efficient combination of pyrolyzing sludge and gasification and melting, not only reduce operating cost, also improve
The yield of synthesis gas, heat recovery rate is high, resource level is high, product economy is profitable, do not produce two English, secondary dirt
Dye is little.
Below with reference to specific embodiment, the present invention will be described.In following embodiments, institute's taking technique condition value is
Exemplary, its desirable numerical range is as shown in foregoing summary.Detection method used by following embodiments is one's own profession
The conventional detection method of industry.
Embodiment 1
The present embodiment is processed to mud using the system shown in Fig. 1 and the process route shown in Fig. 2.Mud used is
The mud of certain municipal sewage plant, as shown in table 1, concrete handling process is as follows for its Industrial Analysis, elementary analysiss：
The mud of moisture content 88% is sent in desiccation apparatus 1, produces 47% dirt water being dried, being left 41% moisture content
Mud enters back into heat accumulating type rotating bed 2.Desiccation apparatus 1 are dried to mud for medium using hot water.Heat accumulating type in dry section
The temperature of radial canal is 400 DEG C, and the temperature of the heat accumulation type radiant tube of pyrolysis zone is 950 DEG C.Mud in heat accumulating type rotating bed 2 according to
The secondary pyrolysis burner hearth sidewall (pyrolysis water out) from dry section end for the water passing through the processes such as drying, pyrolytic gas making, finally obtaining
Flow out, enter Sewage Disposal and process；Pyrolysis gas mixture is at the top (pyrolysis gas mixture outlet) of pyrolysis zone end
Discharge, enter plasma gasification reative cell 3；Pyrolytic carbon passes through spiral shell in the end bottom (pyrolytic carbon outlet) of heat accumulating type rotating bed 2
Rotation conveyer device discharge, deliver in coke quenching device 7, with desiccation apparatus 1 produce water is dried and pyrolytic carbon is cooled down by cooling water.Its
In, the temperature of plasma gasification reative cell is 1150 DEG C.The synthesis gas that plasma gasification reative cell 3 is produced is carried out at purification
Reason, to obtain pure CO, H2Deng synthesis gas.Finally synthesis gas is passed through methanation device 5, contains in methanation device 5
Nickel-base catalyst, simultaneously utilize segregation apparatuss 6 by residual gas through purification after qualified discharge.The big portion of pyrolytic carbon that pyrolysis produces
It is divided into mineral residue, be directly transported to landfill yard and be disposed.
The yield of synthesis gas is 50% (being pressed into stove butt), and the yield of pyrolytic carbon is 41% (being pressed into stove butt), final system
The yield that the methane obtaining accounts for synthesis gas is 70%.
Embodiment 2
The present embodiment is processed to mud using the system shown in Fig. 1 and the process route shown in Fig. 2.Mud used is
The mud of certain municipal sewage plant, as shown in table 1, concrete handling process is as follows for its Industrial Analysis, elementary analysiss：
The mud of moisture content 85% is sent in desiccation apparatus 1, produces 45% dirt water being dried, being left 40% moisture content
Mud enters back into heat accumulating type rotating bed 2.Desiccation apparatus 1 are dried to mud for medium using hot water.Heat accumulating type in dry section
The temperature of radial canal is 400 DEG C, and the temperature of the heat accumulation type radiant tube of pyrolysis zone is 650 DEG C.Mud in heat accumulating type rotating bed 2 according to
The secondary pyrolysis burner hearth sidewall (pyrolysis water out) from dry section end for the water passing through the processes such as drying, pyrolytic gas making, finally obtaining
Flow out, enter Sewage Disposal and process；Pyrolysis gas mixture is at the top (pyrolysis gas mixture outlet) of pyrolysis zone end
Discharge, enter plasma gasification reative cell 3；Pyrolytic carbon passes through spiral shell in the end bottom (pyrolytic carbon outlet) of heat accumulating type rotating bed 2
Rotation conveyer device discharge, deliver in coke quenching device 7, with desiccation apparatus 1 produce water is dried and pyrolytic carbon is cooled down by cooling water.Its
In, the temperature of plasma gasification reative cell is 1450 DEG C.The synthesis gas that plasma gasification reative cell 3 is produced is carried out at purification
Reason, to obtain pure CO, H2Deng synthesis gas.Finally synthesis gas is passed through methanation device 5, contains in methanation device 5
Nickel-base catalyst, simultaneously utilize segregation apparatuss 6 by residual gas through purification after qualified discharge.Pyrolytic carbon is most of to be inorganic matters
Residue, is directly transported to landfill yard and is disposed.
The yield of synthesis gas is 48% (being pressed into stove butt), and the yield of pyrolytic carbon is 36% (being pressed into stove butt), final system
The yield that the methane obtaining accounts for synthesis gas is 65%.
The analysis of table 1 sludge industrial and elementary analysiss
The yield of the prepared synthesis gas of embodiment 1 and embodiment 2 is more than 30%, and the yield of pyrolytic carbon is more than 25%.Heat
The yield of solution oil is much smaller than the pyrolysis oily yield of some mud rotary kiln pyrogenation techniques.
Additionally, the yield of methane is also higher, more than 60%, illustrate to the technical scheme is that feasible.
To sum up, the present invention is pyrolyzed to the mud after drying and other treatment using heat accumulating type rotating bed, and utilizes plasma (orifice) gas
Change reative cell pyrolysis gas mixture is gasified, water is dried, cooling water can be used as the quenching water of pyrolytic carbon, the conjunction of acquisition
Become that gas yield is high, calorific value is high it is achieved that " innoxious, minimizing, resource " of mud.
Additionally, the process is simple of the present invention, operating cost are low, resource level is high, secondary pollution is little, and it is easily achieved work
Industry and scale.
In the technique that the present invention provides, the low yield of pyrolysis oil, and the yield of synthesis gas is very high, and pipeline will not be occurred to block up
Plug, equipment such as are corroded at the phenomenon, decrease production cost.
In further modified technique, synthesis gas is made for further methane, improves the economic benefit of product.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects
Connect or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to concrete feelings
Condition understands above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score permissible
It is the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be arbitrary
Combine in an appropriate manner in individual or multiple embodiment or example.Additionally, in the case of not conflicting, the technology of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be combined by personnel
And combination.
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 change or the variation of other multi-forms.There is no need to be exhaustive to all of embodiment.And thus drawn
Obvious change that Shen goes out or change among still in protection scope of the present invention.
Claims (10)
1. the system that a kind of recycling sludge is processed is it is characterised in that described system includes：
Desiccation apparatus, have sludge inlet, dewatered sludge outlet, water out, hot water inlet, coolant outlet are dried；
Heat accumulating type rotating bed, has feed(raw material)inlet, pyrolysis water out, pyrolysis gas mixture outlet, pyrolytic carbon outlet, described former
Material entrance is connected with the dewatered sludge outlet of described desiccation apparatus；
Plasma gasification reative cell, has pyrolysis gas mixture entrance, syngas outlet, described pyrolysis gas mixture entrance
It is connected with the pyrolysis gas mixture outlet of described heat accumulating type rotating bed；And
Purifier, has synthesis gas entrance, decontaminating syngas outlet, described synthesis gas entrance and described plasma gasification react
The syngas outlet of room is connected.
2. system according to claim 1 is it is characterised in that described system also includes：
Methanation device, has decontaminating syngas entrance, mixed gas outlet and residual gas outlet, described decontaminating syngas entrance
It is connected with the decontaminating syngas outlet of described purifier；And
Segregation apparatuss, have gaseous mixture entrance, methane outlet and residual gas outlet, described gaseous mixture entrance and described methanation
The mixed gas outlet of device is connected.
3. system according to claim 1 is it is characterised in that described system also includes coke quenching device, described coke quenching device
There is pyrolytic carbon entrance, lime-ash outlet, quenching water inlet, described pyrolytic carbon entrance is gone out with the pyrolytic carbon of described heat accumulating type rotating bed
Mouth is connected.
4. system according to claim 3 is it is characterised in that the quenching water inlet of described coke quenching device is filled with described mummification
The coolant outlet that water out and/or described desiccation apparatus are dried put is connected.
5. system according to claim 1 is it is characterised in that described heat accumulating type rotating bed includes dry section and pyrolysis zone；
Described pyrolysis water out is arranged in the side wall of described dry section end, and described pyrolysis gas mixture outlet is arranged in described pyrolysis
The top of area end.
6. a kind of method using described system process mud arbitrary in claim 1-5 is it is characterised in that methods described includes
Following steps：
Desiccation apparatus described in mud are carried out drying and other treatment, steams the most of moisture in mud, prepared dewatered sludge；
Described dewatered sludge is sent in described heat accumulating type rotating bed and carries out pyrolysis processing, pyrolysis gas mixture and pyrolysis are obtained
Charcoal；
Described for heat solution gas mixture is passed through described plasma gasification reative cell, is obtained and includes CO, H2Synthesis gas；
The described synthesis gas described purifier of feeding is carried out purified treatment, pure CO, H is obtained2Synthesis gas.
7. method according to claim 6 is it is characterised in that make methane using nickel-base catalyst by described synthesis gas.
8. method according to claim 6 is dried water it is characterised in that described mud carries out also producing during drying and other treatment
And cooling water, water is dried and/or described cooling water carries out quenching process to described pyrolytic carbon with described.
9. method according to claim 6 is it is characterised in that to described solution oil gas at a temperature of 1150 DEG C -1450 DEG C
Mixture carries out plasma gasification process.
10. method according to claim 6 is it is characterised in that be pyrolyzed described mud at a temperature of 650 DEG C -950 DEG C.
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| WO2021184088A1 (en) * | 2020-03-19 | 2021-09-23 | Companhia De Saneamento Básico Do Estado De São Paulo-Sabesp | Modular system for treating sanitary sludge and process using said system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021184088A1 (en) * | 2020-03-19 | 2021-09-23 | Companhia De Saneamento Básico Do Estado De São Paulo-Sabesp | Modular system for treating sanitary sludge and process using said system |
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