CN208869480U - A kind of process system of industrial sludge cracking - Google Patents
A kind of process system of industrial sludge cracking Download PDFInfo
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- CN208869480U CN208869480U CN201821204969.0U CN201821204969U CN208869480U CN 208869480 U CN208869480 U CN 208869480U CN 201821204969 U CN201821204969 U CN 201821204969U CN 208869480 U CN208869480 U CN 208869480U
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Abstract
The utility model discloses a kind of process systems of industrial sludge cracking, belong to industrial sludge harmless disposal technology field, including anhydration system, input coefficient, cracking system, combustible gas combustion system, heat energy recovery system and the exhaust treatment system being sequentially connected；The sludge cracking system is also connected with tailings outlet；The combustible gas combustion system includes the combustion tower with ventilation channel；The exhaust treatment system includes tail gas cooling system and exhaust gas purification system.
Description
Technical field
The utility model belongs to industrial sludge harmless disposal technology field, and in particular to a kind of work of industrial sludge cracking
Process system.
Background technique
Industrial sludge mesophytization sludge refers to the sludge that industrial wastewater is generated by the biochemical treatment link of Sewage Disposal,
Semisolid or solid-state is presented in the sludge after flocculation dewatering.Newly generated moisture content is up to 70-90%, even higher, after dehydration
Sludge in 50% or more substance be organic matters, the remainder such as protein be inorganic matter.For such sludge, common processing
Method is direct landfill method and incineration method, during direct landfill method it is general directly by wet mud (moisture content 70-90%) directly into
Enter landfill yard to be filled, landfill not only occupies a large amount of space, but also since moisture content in sludge and organic matter are high after landfill
Etc. reasons, percolate be easily accessible underground water and cause secondary pollution, while after sludge is accumulated for a long time, natural desiccation is easily caused
Landfill yard collapses.The sludge of incineration method processing high-moisture percentage need to consume a large amount of energy, while burning to be not thorough and easily causing tail
Gas disposal is not up to standard to cause secondary pollution.
Country to industrial sludge harm recognize impenetrable it is thorough, to environmental protection think little of early stage, both at home and abroad for industrial sludge
Disposition, all based on stacking and fill, by sludge pour into green land, hillside stack or refuse landfill fill.It stacks
Method only serve the effect of pollutant transfer, the method for landfill, which also only concentrates pollutant, stacks, sludge fermentation after landfill
The stench and percolate that release seriously threaten the physical and mental health of nearby residents, and it is hidden that both methods of disposal have ignored pollution
Suffer from, seriously threatens environmental quality, it is non-by high praise method of disposal.
Mainly there are several types of methods for domestic processing industrial sludge at present:
Fermented manure method: fermented manure method is mainly for the biochemical sludge generated in sewage disposal process, in this kind of sludge
The content of organic matter is high, and convenient for fermentation, the biogas generated after fermentation can do combustion gas use, at the same the residue after fermenting rich in calcium, magnesium,
The elements such as phosphorus, potassium, sodium are first-class hot quick-acting organic fertilizer material.But the processing mode is for the process range of industrial sludge
Limit to very much, it is desirable that sludge source must be content of organic matter height, the low biochemical sludge of pollutant load, it is desirable that front end sorting is very thorough
Bottom, otherwise ferment effect is bad, and fermentation residue is easy to bring secondary pollution as organic fertilizer.
Burning and burying method: burning and burying method refer to by the high sludge of moisture content directly or fuel combination enter incinerator into
Row burns, and the residue after burning enters landfill yard and filled, and such as Publication No. CN1270988C, entitled in the prior art
The Chinese invention of " sludge incineration processing method and Disposal System of Mud Burning " discloses a kind of sludge incineration processing method, the party
Method is that the dewatered sludge for being 75%~85% by moisture content is delivered in the combustion chamber of recirculating fluidized bed, and dewatered sludge was being stored
The polluted gas generated in journey is sent into the combustion chamber of recirculating fluidized bed, and dewatered sludge, polluted gas burn together with coal, is burned
The tail gas of generation discharges after processing, and the residue after burning enters refuse landfill and filled.This method is on mud decrement
The effect got instant result is played, but burning process energy consumption is high, while burning generation tail gas, especially produces under the conditions of high temperature
Raw dioxin is discharged into atmosphere, seriously affects the physical and mental health of nearby residents, while toxic containing heavy metal etc. in incineration residue
Harmful substance brings secondary pollution into landfill yard.
Burn Solidification burying method: the difference for burning Solidification burying method and burning and burying method is that sludge is residual after burning
Slag blended cement is solidified, and is entered landfill yard after cured and is filled, this method equally exists dioxin contamination atmosphere
Problem, while the residue after solidifying can control heavy metal in a short time and enter underground water, but the ability to cure of several years cement is lost
After effect, heavy metal will be again introduced into influence on groundwater surrounding enviroment.
Summary of the invention
The purpose of this utility model is to provide a kind of by the industrial sludge cracking of high content of organics, can efficiently use dirt
The calorific value of mud recycles the process system of the industrial sludge cracking of wherein potential thermal energy.
The purpose of this utility model is achieved through the following technical solutions:
A kind of process system of industrial sludge cracking, it is characterised in that: including be sequentially connected anhydration system, investment system
System, cracking system, combustible gas combustion system, heat energy recovery system and exhaust treatment system；The sludge cracking system is also connected with
There is tailings outlet；The combustible gas combustion system includes the combustion tower with ventilation channel；The exhaust treatment system includes
Tail gas cooling system and exhaust gas purification system.
The sludge dosing system includes with closing wind apparatus and can be by the conveyor screw channel of frequency control.Not only
It can guarantee feed rate, it is also ensured that the amount of oxygen for bringing cracking system into is seldom, it is ensured that cracking process carries out safely.
The cracking system includes the two-layer equation heating tube with control device, and the conveyor screw channel passes through described double
The setting of laminar heating tube.
Heating wire is disposed in the two-layer equation heating tube.
It is connected between the tailings outlet and sludge cracking system by closed conveying pipeline.
The process of industrial sludge cracking can be realized by following steps for the process system of this industrial sludge cracking:
Sludge is dehydrated by drying machine, makes the moisture content in sludge within 30% by desiccation step；
Cleavage step at the uniform velocity adds the sludge Jing Guo desiccation step into cracking system, and in 600 ~ 800 DEG C of temperature
Under degree, at least cracking 30min；
The combustible gas generated in cleavage step is delivered in combustion chamber by combustible gas combustion step, and with after oxygen mix
Burning processing is carried out in the combustion chamber；
Vent gas treatment step, the tail gas that combustible gas combustion step is generated carry out at desulphurization and denitration, dedusting and removing heavy metals
It manages to rear discharge up to standard.
It is to adjust sludge in conjunction with the two-layer equation heating tube length of cracking system, by frequency control in the cleavage step
The conveyor screw channel conveying speed of dosing system is split to control the sludge on conveyor screw channel and be in two-layer equation heating tube
The time of solution is at least 30min.
In the combustible gas combustion step, into combustible gas during mixture of oxygen, the mixed volume of oxygen is combustible gas
5 ~ 10 times.
The technical program has the beneficial effect that:
Conventional method for sludge treatment and this technology it is immediate be incineration disposal technique, incineration disposal technique be in oxygen-enriched item
Under part under the conditions of 900 DEG C or so temperature, organic matter in sludge is thoroughly burnt, although mud decrement is big, is required supplementation with
Heat source, the resource in sludge are not utilized, and cracking condition is controlled the anaerobic environment at 600 ~ 800 DEG C in this technology,
Although reduced training not as good as burning, can potential heat energy in reuse sludge, realize the target of minimizing and recycling.
The process system of industrial sludge cracking provided by the utility model, can efficiently use the calorific value of sludge, recycle it
In potential thermal energy.
Sludge in disposal process after desiccation cracks, wherein organic at a temperature of 600 ~ 800 DEG C in sludge decomposing machine
Object is cracked into the low molecules fuel gas such as methane, carbon monoxide, and thermal energy can be recycled in this part combustible gas after burning, and sludge is through locating
Reason latter aspect reduces the discharge of harmful substance, has on the other hand recycled resource.
Detailed description of the invention
It is of the invention aforementioned and be detailed description below and become more apparent upon when reading in conjunction with the following drawings, in attached drawing:
Fig. 1 is a kind of structural schematic diagram of preferred embodiment of the utility model；
In figure:
1, anhydration system；2, input coefficient；3, cracking system；4, combustible gas combustion system；5, heat energy recovery system；6, tail
Air cooling system；7, exhaust gas purification system.
Specific embodiment
It is further illustrated below by several specific embodiments and realizes the utility model aim technical solution, needed
Bright, the technical solution of the requires of the utility model protection includes but is not limited to following embodiment.
Embodiment 1
As a kind of most basic embodiment of the utility model, a kind of process system of industrial sludge cracking is disclosed,
Such as Fig. 1, including the anhydration system 1, input coefficient 2, cracking system 3, combustible gas combustion system 4, heat energy recovery system being sequentially connected
System 5 and exhaust treatment system；The sludge cracking system 3 is also connected with tailings outlet；The combustible gas combustion system 4 includes
Combustion tower with ventilation channel；The exhaust treatment system includes tail gas cooling system 6 and exhaust gas purification system 7.It disposed
Sludge after Cheng Zhongjing desiccation cracks in sludge decomposing machine at a temperature of 600 ~ 800 DEG C, wherein organic cracking be methane,
Thermal energy can be recycled in the low molecules fuel gas such as carbon monoxide, this part combustible gas after burning, on the one hand sludge subtracts after processing
The discharge for having lacked harmful substance, has on the other hand recycled resource.
Embodiment 2
It is preferably carried out scheme as the utility model one kind, discloses a kind of process system of industrial sludge cracking, such as
Fig. 1, including the anhydration system 1, input coefficient 2, cracking system 3, combustible gas combustion system 4, heat energy recovery system 5 being sequentially connected
And exhaust treatment system；The sludge cracking system 3 is also connected with tailings outlet；The combustible gas combustion system 4 includes band
There is the combustion tower of ventilation channel；The exhaust treatment system includes tail gas cooling system 6 and exhaust gas purification system 7；The sludge
Dosing system includes going back with closing wind apparatus and can not only can guarantee feed rate by the conveyor screw channel of frequency control
It can guarantee that the amount of oxygen for bringing cracking system 3 into is seldom, it is ensured that cracking process carries out safely；The cracking system 3 includes with control
The two-layer equation heating tube of device processed, the conveyor screw channel are arranged across the two-layer equation heating tube；The two-layer equation heating
Heating wire is disposed in pipe；It is connected between the tailings outlet and sludge cracking system 3 by closed conveying pipeline.
The process of industrial sludge cracking can be realized by following steps for the process system of this industrial sludge cracking:
1, sludge drying: the wet mud of 80% or so moisture content is dehydrated by sludge drier, by wherein most water
It is evaporated, guarantees processing moisture content within 30%.
2, sludge is put into: sludge dosing system is frequency conversion adjustable speed charging system, is made of conveyor screw and airlock, no
It only can guarantee feed rate, it is also ensured that the amount of oxygen for bringing cracking system 3 into is seldom, it is ensured that cracking process carries out safely；By
Sludge (within moisture content 30%) after dehydration, it is quantitative at the uniform velocity to add into sludge cracking apparatus, it is ensured that sludge is in a device
Enough residence times are heated evenly and have, to reach best lysis efficiency.
3, crack: cracking apparatus uses collet electric heating, and heating rate and temperature setting are controllable, built-in frequency conversion boosting spiral shell
Rotation, it is ensured that sludge is uniformly distributed in decomposing machine, increases sludge heating surface area, while frequency conversion can adjust sludge forward speed, change
The residence time of fouling mud reaches required cleavage rate.Sludge is uniformly sent into cracking apparatus and carries out cracking processing.In 600-800
At a temperature of DEG C, guarantees that sludge residence time in decomposing machine is greater than 30min by control engine speed, be heated evenly simultaneously, it is dirty
Residual water reacts with organic matter at high temperature in mud provides hydrogen and oxygen, and organic matter cracks at high temperature provides carbon, high temperature item
It plays a role simultaneously both under part, generates low molecule combustible gas, such as methane and carbon monoxide, cracking, which is not thorough, can generate a small amount of length
Chain combustible gas.
4, tailings discharge: organic matter cleavage rate in 3 cracking systems 3 is 60 ~ 80%, after cracking at residue in sludge
In the condition of high temperature, it is based on this feature, this system tailings discharge system uses closed conveying system, and residue is avoided to meet air burning
Risk, to adapt to different operating conditions, this system designs device structure mode according to sludge end-o f-pipe -control direction, if end-o f-pipe -control is
High-temperature fusion or hot setting mode, then discharge system extends directly to back-end processing system；If end-o f-pipe -control be landfill or its
His mode, then discharge system carries out enough coolings, it is ensured that discharging is without firing risk.
5, combustible gas burns: crack generation combustible gas in pipeline to combustion chamber, supplemented after enough oxygen
Full combustion in combustion chamber.Combustion process determines combustion efficiency by detection tail gas situation, and general air supplements 5 for combustion gas
~ 10 times.
6, heat energy recovery: the thermal energy that combustible gas burning generates heats conduction oil by heat exchanger, leading after heating
Hot oil is back to front end sludge drying or life heating.
7, it tail gas clean-up: based on nitride and sulfide is contained in organic matter in sludge, will form in cracking process various
The organic gas of the nitrogenous and sulphur of molecular conformation, forms sulfur dioxide and nitrogen oxides after burning, at the same easily carry over and
Heavy metal, so tail gas clean-up contains desulphurization and denitration, dedusting and removing heavy metals link.Tail gas up to standard is handled through smoke stack emission.
Claims (5)
1. a kind of process system of industrial sludge cracking, it is characterised in that: including be sequentially connected anhydration system (1), investment system
System (2), cracking system (3), combustible gas combustion system (4), heat energy recovery system (5) and exhaust treatment system；The sludge is split
Solution system (3) is also connected with tailings outlet；The combustible gas combustion system (4) includes the combustion tower with ventilation channel；Institute
Stating exhaust treatment system includes tail gas cooling system (6) and exhaust gas purification system (7).
2. a kind of process system of industrial sludge cracking as described in claim 1, it is characterised in that: the sludge dosing system
Including with closing wind apparatus and can be by the conveyor screw channel of frequency control.
3. a kind of process system of industrial sludge cracking as claimed in claim 2, it is characterised in that: the cracking system (3)
Two-layer equation heating tube including having control device, the conveyor screw channel are arranged across the two-layer equation heating tube.
4. a kind of process system of industrial sludge cracking as claimed in claim 3, it is characterised in that: the two-layer equation heating tube
In be disposed with heating wire.
5. a kind of process system of industrial sludge cracking as described in claim 1, it is characterised in that: the tailings outlet with
Sludge cracking system is connected between (3) by closed conveying pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821204969.0U CN208869480U (en) | 2018-07-27 | 2018-07-27 | A kind of process system of industrial sludge cracking |
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| CN201821204969.0U CN208869480U (en) | 2018-07-27 | 2018-07-27 | A kind of process system of industrial sludge cracking |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108675613A (en) * | 2018-07-27 | 2018-10-19 | 成都源永科技发展有限公司 | A kind of process system and method for industrial sludge cracking |
| CN111153577A (en) * | 2020-01-21 | 2020-05-15 | 美景（北京）环保科技有限公司 | Oily sludge treatment device and treatment method |
-
2018
- 2018-07-27 CN CN201821204969.0U patent/CN208869480U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108675613A (en) * | 2018-07-27 | 2018-10-19 | 成都源永科技发展有限公司 | A kind of process system and method for industrial sludge cracking |
| CN111153577A (en) * | 2020-01-21 | 2020-05-15 | 美景（北京）环保科技有限公司 | Oily sludge treatment device and treatment method |
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