CN110002708A - A kind of pyrolyzing sludge dehydration and drying processing burning disposing technique - Google Patents
A kind of pyrolyzing sludge dehydration and drying processing burning disposing technique Download PDFInfo
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- CN110002708A CN110002708A CN201910314387.0A CN201910314387A CN110002708A CN 110002708 A CN110002708 A CN 110002708A CN 201910314387 A CN201910314387 A CN 201910314387A CN 110002708 A CN110002708 A CN 110002708A
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- Prior art keywords
- sludge
- burning
- pyrolyzing
- drying processing
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Classifications
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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
-
- 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
-
- 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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/12—Sludge, slurries or mixtures of liquids
-
- 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)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treatment Of Sludge (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses a kind of pyrolyzing sludge dehydration and drying processing burning disposing technique, include the following steps: to mix pyrolysis brokenly bubble into warm sludge water Step 1: at least one sludge raw material is sent into pyrolyzing sludge wall-breaking machine and fry；Step 2: warm sludge water is sent into cooling its toughness of destruction in emulsifier unit, it is then fed into dewaterer and is dehydrated, obtain water-containing sludge；It is dried Step 3: water-containing sludge is sent into sludge drier, obtains dry sludge；Burning processing is carried out Step 4: dry sludge is mixed to be sent into sludge incinevator with charcoal material；Step 5: combustion tail gas heats thermally conductive charge material boiler；Step 6: qualified discharge after handling dry tail gas and sludge incineration furnace exhaust gas.The present invention desiccation can be carried out to sludge and burning is handled, the heavy metal in sludge can be effectively treated, dioxin will not be generated, it also can get the active clinker for building concrete raw material, realize the resource utilization of sludge, and combustion tail gas can qualified discharge, thoroughly solve discharge gas environmental issue.
Description
Technical field
The present invention relates to technical field of sludge treatment, and in particular to a kind of pyrolyzing sludge dehydration and drying processing burning disposition work
Skill.
Background technique
Sludge is the semisolid generated in sewage disposal process or solid matter.It is generated in sewage treatment plant's production process
Sludge (sewage become muddy water, through flocculate mud be dehydrated again obtained by mud cake) in moisture content be up to 70%~90%.Sewage treatment plant
10,000 tons of sewage of every processing will generate 6-10 tons of sludge.Sludge is water pollutant, such as cannot thoroughly be handled it, pollution meeting one
It is straight to exist.Therefore, Treatment of Sludge is to realize the steps necessary of sewage treatment.Sludge shape is grey black, vesicle-containing body, wherein containing big
The protein organic matter of amount, various strain pathogen.Sludge is shelved for a long time will lead to rot smelly, generation methane, hydrogen sulfide etc.
Poison gas, and bacterium, mosquitos and flies are bred, it spreads the disease, life threatening.Also contain heavy metal, chemicals, contaminant water in industrial sludge
Soil endangers environment.
Domestic and international early stage sludge treatment based on stacking, by sludge with pouring into rubber, vegetable plot, green land, hillside
In.This method ignores pollution hidden trouble, seriously threatens environmental quality.The processing of later sludge switchs to underground landfill by ground stockpiling,
Since what underground landfill needed takes up a large area, and develop other method for sludge treatment, such as burn.Filling sludge is once state
The process approach of interior sewage treatment plant's processing sludge, most of producers once handle sludge in a manner of landfill.Sludge landfill place
For multiselect in field depression, the watershed of this area, resident is rare, and natural ecology is preferably local.After filling sludge, sludge landfill
Ground messenger is gradually rare.However, with the expansion of people's scope of activities, stink damp that landfill sludge issues, mosquitos and flies are more etc. is caused
Filthy environment it is unpleasant, cause Sludge landfill place nearby residents to government complain problem of environmental pollution.Therefore, economical
Comparatively developed regions, government pay much attention to and have set about research processing sludge landfill problem.
Presently, there are following methods for the processing of landfill sludge:
1) burn: burning sludge is negative energy, and side effect is very big.Burning sludge is usually by the power plant in each place Lai complete
At.It is primarily due to chimney of electric plant height, pollution dilution is not easy to cause nearby residents dislike mood.But due to the corruption of sludge
Corrosion is strong, causes electric power factory equipment loss big, depreciation is rapid.Meanwhile because generating serious secondary pollution during burning process,
In it is most well known be exactly dioxin harm, it is everlasting, genetic mutation is easy to cause, to resident's life and health band of this area
Carry out permanent disaster.On the other hand, 1 ton of sludge of the every burning of power plant will generate 186 kilograms or so of cigarette ash in flue, inactive,
Not available, if dioxin therein, heavy metal are exceeded, as hazardous waste needs to expend a large amount of sanitary landfills expense
(1200-2000 yuan/ton)；
2) desiccation is burnt: dewatered sludge calorific value have 3000 kilocalories/kilogram, and coal mixing incendivity, burning positive energy, no
Generate dioxin.Since clinker is active, resource utilization disposition can thoroughly handle sludge.It is existing dry through investigating
This 427 yuan/ton of chemical conversion, does not include equipment depreciation；500,000 yuan/ton of drying equipment price individual event, 300 ton/days of sludge drying projects
It offers 1.75 hundred million yuans.If the sludge after desiccation does not have solution route without power plant, cannot survive alone.If electric
Factory burns charge, it is contemplated that for expense up to 260-480 yuan/ton, total processing cost is up to 687-907 yuan/ton of sludge, ordinary enterprises
It is difficult to undertake.
Summary of the invention
Goal of the invention of the invention is to provide a kind of pyrolyzing sludge dehydration and drying processing burning disposing technique, can be to sludge
Desiccation and burning processing are carried out, the heavy metal in sludge can not only be effectively treated, and dioxin will not be generated, also can get
For the active clinker of building concrete raw material, realize the resource utilization of sludge, and combustion tail gas can qualified discharge,
Thoroughly solve the environmental issue of discharge gas.
To achieve the above object of the invention, the technical solution adopted by the present invention is that: a kind of processing combustion of pyrolyzing sludge dehydration and drying
Disposing technique is burnt, is included the following steps:
Pyrolysis brokenly bubble is mixed into warm sludge Step 1: at least one sludge raw material is sent into pyrolyzing sludge wall-breaking machine and fry
Water；
Step 2: the resulting warm sludge water of step 1 is sent into emulsifier unit and coolant liquid is added to destroy its toughness, then
It is sent into dewaterer and is dehydrated, obtain water-containing sludge；
It is dried Step 3: the resulting water-containing sludge of step 2 is sent into sludge drier, obtains dry sludge；
Burning processing is carried out Step 4: the resulting dry sludge of step 3 is mixed to be sent into sludge incinevator with charcoal material；
Step 5: the sludge incineration furnace exhaust gas to the drying tail gas in step 1 and step 3 and in step 4 carries out
Qualified discharge after processing.
In above-mentioned technical proposal, the pyrolyzing sludge wall-breaking machine in the step 1 and the sludge drier in step 3 are selected
Use hollow blade dryer.
In above-mentioned technical proposal, in the hollow blade dryer thermally conductive charge material be conduction oil, charge material temperature 270 degree with
Under.Preferable temperature 230 to 250 is spent.
In above-mentioned technical proposal, sludge incinevator combustion tail gas heats thermally conductive charge material for tail gas heat conducting boiler.
In above-mentioned technical proposal, in the step 3, the moisture content of the dry sludge is 35~40%.
In above-mentioned technical proposal, in the step 3, hot wind also is passed through at the mud inlet of sludge drier and is assisted
It is dry.
In above-mentioned technical proposal, the sludge incinevator in the step 4 selects belt fire grate structure, and has 2 feedings
Mouthful.
In above-mentioned technical proposal, the calory burning of sludge incinevator is had more than needed for heating thermally conductive charge material in the step 4
Heat can be used for heating up water.
In above-mentioned technical proposal, the sludge incineration furnace exhaust gas in the step 4 carries out the pre- place that exchanges heat through air preheater
Reason.
In above-mentioned technical proposal, spraying cooling processing method and plasma chemical processing side are successively used in the step 5
Method handles dry tail gas and sludge incineration furnace exhaust gas.
Due to the above technical solutions, the present invention has the following advantages over the prior art:
The present invention is by successively carrying out pyrolysis brokenly bubble, emulsification, dehydration, drying to sludge raw material, to obtain to light
Drying sludge；And burnt in sludge incinevator together with charcoal material by the way that sludge will be dried, sludge can not only be effectively treated
In heavy metal, and dioxin will not be generated, also can get the active clinker for building concrete raw material, realized
The resource utilization of sludge；Classification processing also is carried out to dry tail gas and sludge incineration furnace exhaust gas respectively, and concentrates qualified discharge,
Thoroughly solves the environmental issue of discharge gas.
Detailed description of the invention
Fig. 1 is the process flow chart of the embodiment of the present invention one.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments:
Embodiment one:
Shown in Figure 1, a kind of pyrolyzing sludge dehydration and drying processing burning disposing technique includes the following steps:
Pyrolysis brokenly bubble is mixed into warm sludge Step 1: at least one sludge raw material is sent into pyrolyzing sludge wall-breaking machine and fry
Water；
Step 2: the resulting warm sludge water of step 1 is sent into emulsifier unit and coolant liquid is added to destroy its toughness, then
It is sent into dewaterer and is dehydrated, obtain water-containing sludge；
It is dried Step 3: the resulting water-containing sludge of step 2 is sent into sludge drier, obtains dry sludge；
Burning processing is carried out Step 4: the resulting dry sludge of step 3 is mixed to be sent into sludge incinevator with charcoal material；
Step 5: the sludge incineration furnace exhaust gas to the drying tail gas in step 1 and step 3 and in step 4 carries out
Qualified discharge after processing.
In the present embodiment, the charge material in the pyrolyzing sludge wall-breaking machine and sludge drier is conduction oil, and charge material temperature is
270 degree or less.
The pyrolyzing sludge wall-breaking machine and sludge drier select hollow blade dryer.
In the present embodiment, in the step 3, the moisture content of the dry sludge is 35~40%.
In the present embodiment, in the step 3, it is also passed through hot wind at the mud inlet of sludge drier and carries out auxiliary drying.
Specifically, hot air inlet is added in the mud inlet of sludge drier, by hot air inlet to being passed through heat in secondary drying machine
Wind.
In the present embodiment, the sludge incinevator in the step 4 selects belt fire grate structure, and has 2 feeding ports,
Wherein, for a feeding port for inputting dry sludge, another feeding port selects coal or orchid for inputting charcoal material, the charcoal material
Charcoal.
In the present embodiment, the calory burning of sludge incinevator has surplus for dewatered sludge in the step 4, the present invention
Extra heat is used to heat sale of heating up water.
In the present embodiment, the sludge incineration furnace exhaust gas in the step 4 carries out heat exchange pretreatment through air preheater, in advance
Treated, and tail gas is respectively fed in pyrolyzing sludge wall-breaking machine and sludge drier by pressure fan, and extra tail gas is sent directly to
Vent gas treatment region is handled.
In the present embodiment, spraying cooling processing method and plasma chemical processing method pair are successively used in the step 5
Dry tail gas and sludge incineration furnace exhaust gas are handled, at this point, vent gas treatment region includes dry vent gas treatment station and sludge
Burn furnace exhaust gas station, and dry vent gas treatment station successively condenses, at spraying cooling and plasma chemical dry tail gas
Reason, sludge incinevator vent gas treatment station successively carry out spraying cooling and plasma chemical processing, place to sludge incineration furnace exhaust gas
It manages tail gas up to standard and is finally concentrated in chimney and be discharged.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
A variety of modifications of above-described embodiment will be readily apparent to those skilled in the art, it is as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to above-described embodiment shown in this article, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of pyrolyzing sludge dehydration and drying processing burning disposing technique, which comprises the steps of:
Pyrolysis brokenly bubble is mixed into warm sludge water Step 1: at least one sludge raw material is sent into pyrolyzing sludge wall-breaking machine and fry；
Step 2: the resulting warm sludge water of step 1 is sent into emulsifier unit and coolant liquid is added to destroy its toughness, it is then fed into
It is dehydrated in dewaterer, obtains water-containing sludge；
It is dried Step 3: the resulting water-containing sludge of step 2 is sent into sludge drier, obtains dry sludge；
Burning processing is carried out Step 4: the resulting dry sludge of step 3 is mixed to be sent into sludge incinevator with charcoal material；
Step 5: handling the drying tail gas in step 1 and step 3 and the sludge incineration furnace exhaust gas in step 4
Qualified discharge afterwards.
2. pyrolyzing sludge dehydration and drying processing burning disposing technique according to claim 1, it is characterised in that: the step
Pyrolyzing sludge wall-breaking machine in one and the sludge drier in step 3 select hollow blade dryer.
3. pyrolyzing sludge dehydration and drying processing burning disposing technique according to claim 2, it is characterised in that: described hollow
Vapor (steam) temperature is 180~190 DEG C in blade dryer.
4. pyrolyzing sludge dehydration and drying processing burning disposing technique according to claim 3, it is characterised in that: the steam
Select industrial boiler steam.
5. pyrolyzing sludge dehydration and drying processing burning disposing technique according to claim 1, it is characterised in that: the step
In three, the moisture content of the dry sludge is 35~40%.
6. pyrolyzing sludge dehydration and drying processing burning disposing technique according to claim 1, it is characterised in that: the step
In three, it is also passed through hot wind at the mud inlet of sludge drier and carries out auxiliary drying.
7. pyrolyzing sludge dehydration and drying processing burning disposing technique according to claim 1, it is characterised in that: the step
Sludge incinevator in four selects belt fire grate structure, and has 2 feeding ports.
8. pyrolyzing sludge dehydration and drying processing burning disposing technique according to claim 1, it is characterised in that: the step
The calory burning of sludge incinevator boils water for heating hot water boiler in four.
9. pyrolyzing sludge dehydration and drying processing burning disposing technique according to claim 1, it is characterised in that: the step
Sludge incineration furnace exhaust gas in four carries out heat exchange pretreatment through air preheater.
10. pyrolyzing sludge dehydration and drying processing burning disposing technique according to claim 1, it is characterised in that: the step
Successively using spraying cooling processing method and plasma chemical processing method to dry tail gas and sludge incineration furnace exhaust gas in rapid five
It is handled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910314387.0A CN110002708A (en) | 2019-04-18 | 2019-04-18 | A kind of pyrolyzing sludge dehydration and drying processing burning disposing technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910314387.0A CN110002708A (en) | 2019-04-18 | 2019-04-18 | A kind of pyrolyzing sludge dehydration and drying processing burning disposing technique |
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| CN110002708A true CN110002708A (en) | 2019-07-12 |
Family
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| CN201910314387.0A Pending CN110002708A (en) | 2019-04-18 | 2019-04-18 | A kind of pyrolyzing sludge dehydration and drying processing burning disposing technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111285577A (en) * | 2020-03-30 | 2020-06-16 | 西安热工研究院有限公司 | Totally-enclosed sludge slurrying spraying system and method |
| CN112984528A (en) * | 2021-03-16 | 2021-06-18 | 浙江先创能源科技股份有限公司 | Sludge drying and incinerating device and sludge incinerating method thereof |
| CN116535073A (en) * | 2023-03-17 | 2023-08-04 | 上海市政工程设计研究总院（集团）有限公司 | Sludge-water-gas cooperative treatment method for sewage plant |
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| EP0829457A2 (en) * | 1996-09-11 | 1998-03-18 | Binder & Co. Aktiengesellschaft | Process and device for drying sludge |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111285577A (en) * | 2020-03-30 | 2020-06-16 | 西安热工研究院有限公司 | Totally-enclosed sludge slurrying spraying system and method |
| CN112984528A (en) * | 2021-03-16 | 2021-06-18 | 浙江先创能源科技股份有限公司 | Sludge drying and incinerating device and sludge incinerating method thereof |
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| CN116535073A (en) * | 2023-03-17 | 2023-08-04 | 上海市政工程设计研究总院（集团）有限公司 | Sludge-water-gas cooperative treatment method for sewage plant |
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Application publication date: 20190712 |
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