CN108706849A - A kind of oily sludge classification pyrolysis plant and method - Google Patents
A kind of oily sludge classification pyrolysis plant and method Download PDFInfo
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- CN108706849A CN108706849A CN201810522022.2A CN201810522022A CN108706849A CN 108706849 A CN108706849 A CN 108706849A CN 201810522022 A CN201810522022 A CN 201810522022A CN 108706849 A CN108706849 A CN 108706849A
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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
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
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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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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Treatment Of Sludge (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The present invention relates to disposal of oily sludge field, a kind of oily sludge classification pyrolysis plant and method are disclosed.The oily sludge classification pyrolysis plant includes drying device (1), low temperature pyrogenation reaction unit (2), high temperature pyrolysis reaction device (3) and gas-liquid separation device (4)；Oily sludge is introduced into the drying device (1) and is dried, the product of the drying, which is introduced into the low temperature pyrogenation reaction unit (2), carries out low temperature pyrogenation, the residue of the low temperature pyrogenation, which is introduced into the high temperature pyrolysis reaction device (3), carries out high temperature pyrolysis, and the volatiles of the volatiles of the low temperature pyrogenation and the high temperature pyrolysis, which are introduced into the gas-liquid separation device (4), carries out gas-liquid separation.The temperature of the low temperature pyrogenation is less than the temperature of the high temperature pyrolysis.The pyrolysis oil with high-quality in high yield, great prospects for commercial application can be obtained by using pyrolysis classification by being classified pyrolysis plant and method using oily sludge provided by the invention.
Description
Technical field
The invention belongs to disposal of oily sludge fields, and in particular to a kind of oily sludge classification pyrolysis plant and method.
Background technology
It is that oil is looked forward to that oil, which is properly settled, using the contradiction between the environmental pollution brought and increasingly strict environmental requirement
The problem of industry must face.Oily sludge (greasy filth) be oil exploration, exploitation, refining, processing, transport, storage, at oily waste water
The organic hazardous solid waste that the processes such as reason unavoidably generate is the main source of China's oil pollution.Greasy filth is by crude oil
Or product oil is mixed into soil or other media and the solid waste that is formed, has the spies such as complicated component, viscosity are high, volatility is big
Point.China's greasy filth yield is huge, generates millions of tons every year, stores up more than one hundred million tons, volatile organic contaminant, the huge sum of money contained
Category, harmful microorganism etc. seriously threaten surrounding enviroment, have been put into《National Hazard waste register》.Oilfield enterprise's discharge contains greasy dirt
Mud needs to pay huge charges for disposing pollutants (1000 yuan/ton), not only polluted environment, but also return enterprise if processing disposition is not up to standard
Bring heavy financial burden.Contain abundant petroleum like hydrocarbon in greasy filth, oil content generally in 10%-50%,
It is worth with important petroleum vapor recovery.Oily sludge be " abandon can cause harm, with it can be treasured ".However, the existing greasy filth in China is big
It the simple and easy methods processing such as mostly uses air storage, landfill, directly burn, there is no that realization is " minimizing, recycling, harmless
Change ".Therefore, recycling and the innoxious process for treating for developing oily sludge are extremely urgent, to reducing environmental pollution, the energy
Clean utilization and Business Economic Benefit are of great significance.
At this stage, the main methods of domestic and international greasy filth have Chemical Physics extraction method (solvent extraction, chemico-heating wash
Method, quenched mechanical phonograph recorder separation etc.), biological treatment and heat treating process (burn, pyrolysis etc.).Wherein, Chemical Physics extraction method
It needs to use a large amount of solvent or additive, there are secondary pollutions seriously, handles the problems such as being not thorough.The processing of biological treatment rule
Period is long, can not oil recovery resource, there are environmental risks etc..Gu oil-water-emulsification that heat treating process can stablize chemical property
System is converted to pyrolysis oil, solid residue and gas, and the gas pollutant of generation is less compared to burning, and reduces secondary pollution；It will
Heavy metal accumulation in residue, compared to flying dust there is higher resistant to leaching, residual residue the terminals such as directly can fill and build the road
Disposition has many advantages, such as that resource utilization is high, secondary pollution is few, reduced training is good, disposition is thorough, is the oil of most application prospect
One of mud treatment technology.
Greasy filth be pyrolyzed oil recovery resource and innoxious process for treating exploitation be always oil-sludge treatment technical research hot spot it
One, but up to now without the device and example of large-scale industrial operation.Limit the important of greasy filth pyrolytic technique large-scale application
Reason is to be pyrolyzed the less economical of liquid product, that is, being pyrolyzed oil recovery rate, low (pyrolysis oil is essentially colloid, pitch with poor quality
The high product of the heavy constituents content such as matter).The final pyrolysis oil recovery rate of existing pyrolytic technique is not high, mostly 60% hereinafter,
Even lower than 30%, and heavy components content (Fei Dian > in pyrolysis oil;350 DEG C) more than 20%, even up to 60% or more.
CN106830605 A disclose a kind of process for treating oil-containing sludge, and this method includes：Classification processing is carried out to sludge, by sludge
It is divided into oily sludge and activated sludge；Oily sludge by delayed coking unit it is small steam out and/or big insufflation stage carry out it is harmless
Change is handled, and using heat in coke drum by light oil in oily sludge and moisture evaporation, heavy oil carries out condensation pyrolysis；To activated sludge
It is dried and dehydrated；Wherein, in the oily sludge grease processing for using high temperature heat in coke drum by water in oily sludge
Part and light oil constituents steam, and the heavy oil product in the oily sludge is partly cracked into light-end products and hydro carbons gas in coke drum
Body, partial condensates are coke, and solids enters in coke contained in the oily sludge, become the ash content of coke.Although should
Greasy filth pyrolysis is referred in patent application, and there are light components volatilization and heavy component cracking process, but oily sludge is in the device
The interior high temperature that is directly warming up to is pyrolyzed, and light components volatilization and heavy oil cracking almost occur simultaneously, the lightweight that the two generates
Component will continue in high-temperature coke tower that violent secondary response occurs (close to 1000 DEG C), and pyrolysis oil gas is caused to be cracked to form greatly
Gaseous product is measured, causes finally to be pyrolyzed oil yield extremely low.Meanwhile aromatised fraction undergoes the environment of such high temperature in pyrolysis oil, also
The generation coke such as polycondensation reaction can occur and fused ring compound, the yield and quality for eventually leading to pyrolysis oil are difficult to ensure.This
Outside, which does not distinguish and is classified regulation and control to the pyrolytic process of light components and mink cell focus to realize thermal decomposition product
Optimization.Existing most of pyrolysis installations and method be substantially directly by oily sludge be warming up to high temperature (550 DEG C or more) into
Row pyrolysis can cause most of light oil experience hot environment that secondary response occurs, cause oil yield to reduce, while heavy in this way
Component cracks insufficient problem, frequently can lead to the high heavy component of final pyrolysis oil.Therefore, innovation oily sludge is pyrolyzed
It is low high with heavy constituent content to break through existing greasy filth pyrolysis oil recovery rate to obtain the pyrolysis oil with quality in high yield for device and method
Technical bottleneck, be that the critical issue solved is badly in need of in existing oily sludge Study on Pyrolysis and technological development.
Invention content
The purpose of the present invention is to solve use existing oily sludge pyrolytic technique exist pyrolysis oil recovery rate it is low with
And the high problem of heavy components content in pyrolysis oil, and a kind of new oily sludge classification pyrolysis plant and method are provided.
Specifically, oily sludge provided by the invention classification pyrolysis plant include drying device, low temperature pyrogenation reaction unit,
High temperature pyrolysis reaction device and gas-liquid separation device；Oily sludge is introduced into the drying device and is dried, the drying
Product, which is introduced into the low temperature pyrogenation reaction unit, carries out low temperature pyrogenation, and the residue of the low temperature pyrogenation introduces the high temperature pyrolysis
High temperature pyrolysis, the volatiles introducing of the volatiles of the low temperature pyrogenation and the high temperature pyrolysis are carried out in reaction unit
Gas-liquid separation is carried out in the gas-liquid separation device.
In addition, oily sludge classification method for pyrolysis provided by the invention includes that oily sludge is dried, the drying
Product carry out low temperature pyrogenation, the residue of the low temperature pyrogenation carries out high temperature pyrolysis, the volatiles of the low temperature pyrogenation and
The volatiles of the high temperature pyrolysis carry out gas-liquid separation, and the temperature of the low temperature pyrogenation is less than the temperature of the high temperature pyrolysis
Degree.
Organic matter in the oily sludge is mainly made of light components and cured mink cell focus, and the present invention passes through low temperature
Thermal cracking section extracts light oil and the mode of high temperature pyrolysis section cracking heavy constituent realizes pyrolysis classification, on the one hand, due to low
Second pyrolysis can be inhibited to react under warm environment, to effectively avoid light components transition from cracking, maximize and extract in low-temperature zone
Light oil is to ensure the yield of cracked oil, and on the other hand, high temperature section cracking can be by remaining heavy in Low Temperature Thermal cracked residue
Component is cracked into light oil to improve oil quality.To sum up, pyrolysis plant and method are classified using oily sludge provided by the invention
The pyrolysis of high yield and high-quality (heavy oil component content is low, light oil constituent content is high) can be obtained by using pyrolysis classification
Oil, great prospects for commercial application.
In addition, existing pyrolytic technique is typically that oily sludge is directly warming up to high temperature (550 DEG C or more), it is desirable to provide
High-grade heat source can increase the energy expenditure of system in this way.And oily sludge classification pyrolysis plant provided by the invention and side
Method, low temperature pyrogenation reaction unit can directly use low-grade heat source, or even directly use high temperature pyrolysis reaction device follow-up
Low-grade heat source carry out material heating heating, realize graded supply and energy cascade utilization, advantageously reduce system energy consumption
With the economy for improving pyrolytic technique.
Description of the drawings
Exemplary embodiment of the invention is described in more detail in conjunction with the accompanying drawings, it is of the invention above-mentioned and its
Its purpose, feature and advantage will be apparent, wherein in exemplary embodiment of the invention, identical reference label
Typically represent same parts.
Fig. 1 is a kind of schematic structure for specific implementation mode that oily sludge provided by the invention is classified pyrolysis plant
Figure；
Fig. 2 is the schematic structure for another specific implementation mode that oily sludge provided by the invention is classified pyrolysis plant
Figure.
Reference sign
1- drying devices；2- low temperature pyrogenation reaction units；3- high temperature pyrolysis reaction devices；4- gas-liquid separation devices；5- contains
Greasy dirt warehouse；6- feeding equipments；7- spiral pyrolysis reactors；8- gas-phase product collecting bins；9- pyrolysis residue feed bins.
Specific implementation mode
The preferred embodiment of the present invention is described in more detail below.Although the following describe the preferred implementations of the present invention
Mode, however, it is to be appreciated that may be realized in various forms the present invention without should be limited by embodiments set forth herein.
Oily sludge classification pyrolysis plant provided by the invention includes drying device 1, low temperature pyrogenation reaction unit 2, high temperature
Pyrolytic reaction device 3 and gas-liquid separation device 4；Oily sludge is introduced into the drying device 1 and is dried, the production of the drying
Object, which is introduced into the low temperature pyrogenation reaction unit 2, carries out low temperature pyrogenation, obtains light pyrolysis volatile matter, realizes light in oily sludge
The extraction of matter oil, low temperature environment inhibit second pyrolysis reaction, the residue of the low temperature pyrogenation to introduce the high temperature pyrolysis reaction dress
High temperature pyrolysis is carried out in setting 3, realizes that remaining heavy component pyrolysis obtains light oil, high temperature pyrolysis residue in low temperature pyrogenation residue
The high temperature pyrolysis reaction device 3 is discharged and enters pyrolysis residue feed bin 9, the volatiles of the low temperature pyrogenation and the high temperature
The volatiles of pyrolysis are introduced into or are concomitantly introduced into after aggregated in the gas-liquid separation device 4 respectively carries out gas-liquid point
From acquisition pyrolysis liquid product and incoagulability pyrolysis gas.
The oily sludge realizes low-temperature zone extraction by regulating and controlling different pyrolysis reaction temperature and volatile matter reflex action
The pyrolysis classification and product optimization of light oil and high temperature section cracking heavy constituent.Wherein, the drying device 1, low temperature pyrogenation reaction
Device 2 and high temperature pyrolysis reaction device 3 can be independently arranged and run, and integrated can also be arranged in same reactor
It carries out being classified/being segmented cracking.
As shown in Figure 1, the drying device 1, low temperature pyrogenation reaction unit 2, high temperature pyrolysis reaction device 3 and gas-liquid separation
Device 4 respectively can be independently arranged and run.Wherein, the drying device 1 can be existing various can be carried out to material
Dry equipment, for example, can be in spiral dryer, moving bed dryer, fluidized bed dryer and rotary kiln
At least one.The low temperature pyrogenation reaction unit 2 and high temperature pyrolysis reaction device 3 or existing various it can distinguish
The device for realizing low temperature pyrolyzer and Pintsch process, for example, the two can be each independently selected from spiral pyrolysis reactor, moving bed
At least one of reactor, fluidized-bed reactor and reacting in rotary kiln device.At this point, oily sludge is sequentially sent to the dry dress
Set in 1, low temperature pyrogenation reaction unit 2 and high temperature pyrolysis reaction device 3 be dried, low temperature pyrogenation and high temperature pyrolysis, it is described dry
The dry volatiles of volatile matter, the low temperature pyrogenation and the volatiles of the high temperature pyrolysis are concomitantly introduced into or through converging
It is concomitantly introduced into the gas-liquid separation device 4 after collection and carries out gas-liquid separation, obtain pyrolysis gas and pyrolysis oil；The high temperature pyrolysis
Residue the high temperature pyrolysis reaction device 3 is discharged.
As shown in Fig. 2, the drying device 1, low temperature pyrogenation reaction unit 2 and high temperature pyrolysis reaction device 3 can integrate
Integrated setting, and regulate and control to realize that dry and classification is pyrolyzed by being segmented, it can effectively solve the problem that oily sludge viscosity is big at this time
The problem of being difficult to convey.Specifically, as shown in Fig. 2, when the drying device 1, low temperature pyrogenation reaction unit 2 and high temperature pyrolysis are anti-
When answering 3 integrated setting of device, oily sludge classification pyrolysis plant include oily sludge warehouse 5, feeding equipment 6,
Spiral pyrolysis reactor 7 and pyrolysis residue feed bin 9, the drying device 1, low temperature pyrogenation reaction unit 2 and high temperature pyrolysis reaction
Device 3 is the different zones section along material moving direction in the spiral pyrolysis reactor 7, anti-by being pyrolyzed to the spiral
Device 7 is answered to carry out segmentation regulation and control to realize dry, low temperature pyrogenation and high temperature pyrolysis；It is stored in containing in the oily sludge warehouse 5
Greasy dirt is sent by the feeding equipment 6 in the spiral pyrolysis reactor 7, and is dried successively, low temperature pyrolyzer and height
Anneal crack solution, the volatile matter of the drying, the volatiles of the low temperature pyrogenation and the high temperature pyrolysis volatiles one
It rises to be introduced into or be concomitantly introduced into the gas-liquid separation device 4 after aggregated and carries out gas-liquid separation；The high temperature pyrolysis it is residual
Slag is discharged the high temperature pyrolysis reaction device 3 and enters pyrolysis residue feed bin 9.In addition, the oily sludge classification pyrolysis plant is also
Preferably include the gas-phase product collecting bin 8 for being located at the top of the spiral pyrolysis reactor 7, for by the volatile matter of the drying,
The volatiles of the volatiles of the low temperature pyrogenation and the high temperature pyrolysis are before introducing the gas-liquid separation device 4
It is collected.
In accordance with the present invention it is preferred that the oily sludge classification pyrolysis plant further includes and the gas-liquid separation device 4
And/or the combustion reactor being connected with the pyrolysis residue feed bin 9, the gas for that will be originated from the gas-liquid separation device 4 produce
Object and/or solid residue from the pyrolysis residue feed bin 9 burn.Wherein, it is originated from the gas of the gas-liquid separation device 4
Body product and solid residue from the pyrolysis residue feed bin 9 can pass through pump or helical feed introduces the combustion reaction
Device.
According to the present invention, the drying device 1, low temperature pyrogenation reaction unit 2 and high temperature pyrolysis reaction device 3 heating side
Formula can be to directly heat material using gas heat carrier or solid thermal carriers, or pass through reactor wall indirectly heat
Material can also be the combination of both the above mode.Wherein, when the mode of heating is to be directly heated using gas heat carrier
When, the gas heat carrier comes preferably from the high-temperature gas that the combustion reactor generates.When the drying device 1, low temperature
When pyrolytic reaction device 2 and high temperature pyrolysis reaction device 3 are integrated setting, the gas heat carrier is by high temperature pyrolysis section
It is passed through, undergoes low temperature pyrolyzer section and dryer section successively, be in reverse flow with oily sludge, realize high-temperature gas heat carrier energy
Cascade utilization improves the yield and quality of pyrolysis oil gas to realize the classification pyrolysis of oily sludge.When the mode of heating is
When directly heating material using solid thermal carriers, the solid thermal carriers come preferably from the high temperature that the combustion reactor generates
Solid particle.
Oily sludge classification method for pyrolysis provided by the invention includes that oily sludge is dried, the product of the drying
Low temperature pyrogenation is carried out, the residue of the low temperature pyrogenation carries out high temperature pyrolysis, the volatiles of the low temperature pyrogenation and the height
The volatiles of warm solution carry out gas-liquid separation, and the temperature of the low temperature pyrogenation is less than the temperature of the high temperature pyrolysis.
The present invention maximizes extraction light oil using classification method for pyrolysis, by low temperature pyrogenation, is inhibited using low temperature environment
The second pyrolysis of volatiles maximizes extraction light oil to ensure oil yield in low-temperature zone；Low temperature pyrogenation residue enters height
Warm solution reaction unit continues heating pyrolysis, realizes the cracking of remaining heavy component in Low Temperature Thermal cracked residue, obtains lightweight
Oil is to improve oil quality.That is, the present invention extracts light oil by low temperature pyrogenation section and high temperature pyrolysis section is pyrolyzed heavy constituent and realizes
Pyrolysis classification, the rate of recovery of pyrolysis oil can be up to 80%, and the pyrolysis oil recovery rate obtained compared to existing pyrolytic technique (is less than
60%) it is significantly increased, and the quality of pyrolysis oil is also improved to some extent.
There is no particular limitation in source of the present invention to the oily sludge, can be originated from ground sludge, tank bottom oil sludge or
Refinery's " three mud ", wherein moisture can be 5wt%-90wt%, preferably 5wt%-60wt%；The content of heavy oil component
Can be 10wt%-90wt%, preferably 10wt%-60wt%.
There is no particular limitation for condition of the present invention to the drying, as long as can will be most in the oily sludge
Moisture removal, it is preferable that the condition of the drying makes the content of moisture in the desciccate be no more than 20wt%.Tool
Body, the temperature of the drying is 100-200 DEG C, and the time of the drying is controlling the content of moisture in desciccate upper
It states subject in range, this those skilled in the art can be known, therefore not to repeat here.
The oily sludge realizes low-temperature zone extraction by regulating and controlling different pyrolysis reaction temperature and volatile matter reflex action
The pyrolysis classification and product optimization of light oil and high temperature section cracking heavy constituent.Wherein, the temperature of the low temperature pyrogenation is preferably
200-500 DEG C, the time is preferably 0.1-1 hours；The temperature of the high temperature pyrolysis is preferably 500-900 DEG C, and the time is preferably
0.1-1 hours.
The present invention will be described in detail by way of examples below.
In following embodiment and comparative example：
The rate of recovery of pyrolysis oil is the percentage that the pyrolysis oil yield obtained accounts for oil content in oily sludge, wherein described
Pyrolysis oil yield be that the pyrolysis oil quality obtained accounts for the mass percent of oily sludge, oil content is oil quality in oily sludge
Account for the mass percent of oily sludge；
Heavy oil component refers to component of the boiling point at 350 DEG C or more, and heavy oil component content is surveyed by true boiling point distillation method
It is fixed；
Lightweight oil ingredient refers to the component that boiling point is less than 350 DEG C, and light oil constituent content is carried out by true boiling point distillation method
It measures.
Embodiment 1
The present embodiment is for illustrating oily sludge classification pyrolysis plant provided by the invention and method.
As shown in Figure 1, oily sludge classification pyrolysis plant provided in this embodiment includes respective independent operating and setting
Drying device 1, low temperature pyrogenation reaction unit 2, high temperature pyrolysis reaction device 3 and gas-liquid separation device 4.Oily sludge (landing oil
Mud, moisture 25wt%, heavy oil component content are 50wt%) it is introduced into the drying device 1 and is done at 100 DEG C
It is dry, the moisture in oily sludge is reduced to 20wt%；The product of the drying introduces the low temperature pyrogenation reaction dress
Be pyrolyzed 1 hour in setting 2 and at 300 DEG C, the residue of the low temperature pyrogenation be introduced into the high temperature pyrolysis reaction device 3 and
It is pyrolyzed 1 hour at 500 DEG C, high temperature pyrolysis residue is discharged by the high temperature pyrolysis reaction device 3, the volatiles of low temperature pyrogenation
Gas-liquid separation is carried out with aggregated be introduced into the gas-liquid separation device 4 later of the volatiles of high temperature pyrolysis, is pyrolyzed
Liquid phase hydrocarbon ils and incoagulability pyrolysis gas.The result shows that the rate of recovery of pyrolysis oil is 70%, wherein light oil constituent content is
70wt%.
Embodiment 2
The present embodiment is for illustrating oily sludge classification pyrolysis plant provided by the invention and method.
As shown in Figure 1, oily sludge classification pyrolysis plant provided in this embodiment includes respective independent operating and setting
Drying device 1, low temperature pyrogenation reaction unit 2, high temperature pyrolysis reaction device 3 and gas-liquid separation device 4.Oily sludge (tank bottom oil
Mud, moisture 30wt%, heavy oil component content are 60wt%) it is introduced into the drying device 1 and is done at 150 DEG C
It is dry, the moisture in oily sludge is reduced to 10wt%；The product of the drying introduces the low temperature pyrogenation reaction dress
Be pyrolyzed 0.8 hour in setting 2 and at 400 DEG C, the residue of the low temperature pyrogenation be introduced into the high temperature pyrolysis reaction device 3 and
It is pyrolyzed 0.7 hour at 700 DEG C, high temperature pyrolysis residue is discharged by the high temperature pyrolysis reaction device 3, the pyrolysis devolatilization of low temperature pyrogenation
Divide and aggregated be introduced into the gas-liquid separation device 4 later of the volatiles of high temperature pyrolysis carries out gas-liquid separation, obtains heat
Solve liquid phase hydrocarbon ils and incoagulability pyrolysis gas.The result shows that the rate of recovery of pyrolysis oil is 80%, wherein light oil constituent content is
75wt%.
Embodiment 3
The present embodiment is for illustrating oily sludge classification pyrolysis plant provided by the invention and method.
As shown in Fig. 2, oily sludge classification pyrolysis plant provided in this embodiment includes the drying of integrated setting
Device 1, low temperature pyrogenation reaction unit 2 and high temperature pyrolysis reaction device 3, specifically, the oily sludge are classified pyrolysis plant packet
Oily sludge warehouse 5, feeding equipment 6, spiral pyrolysis reactor 7, gas-phase product collecting bin 8 and pyrolysis residue feed bin 9 are included, it is described
Drying device 1, low temperature pyrogenation reaction unit 2 and high temperature pyrolysis reaction device 3 are in the spiral pyrolysis reactor 7 along material
The different zones section of moving direction, by carrying out segmentation regulation and control to the spiral pyrolysis reactor 7 to realize dry, low temperature pyrogenation
And high temperature pyrolysis.Oily sludge (refinery " three mud ", moisture 50wt%, the weight being stored in the oily sludge warehouse 5
Oil ingredient content is 60wt%) it is sent into the spiral pyrolysis reactor 7 by the feeding equipment 6, and be dried successively,
Low temperature pyrolyzer and Pintsch process, wherein drying temperature is that moisture is 5wt% in 200 DEG C and desciccate, low temperature pyrolyzer
Temperature is 500 DEG C and the time is 0.5 hour, and the temperature of Pintsch process is 900 DEG C and the time is 0.5 hour, high temperature pyrolysis residue
The high temperature pyrolysis reaction device 3 is discharged and enters pyrolysis residue feed bin 9, the volatile matter of the drying, the low temperature pyrogenation heat
The volatiles of solution volatile matter and the high temperature pyrolysis are aggregated to introduce the gas-liquid separation after gas-phase product collecting bin 8
Gas-liquid separation is carried out in device 4, obtains pyrolysis liquid phase hydrocarbon ils and incoagulability pyrolysis gas, incoagulability pyrolysis gas is by being pumped into burning
It burns in reactor, obtains high-temperature gas, wherein the high-temperature gas is sent into spiral heat as heat carrier from high temperature pyrolysis section
It solves in reactor 7, undergoes low temperature pyrolyzer section and dryer section successively, be in reverse flow with oily sludge, to be carried out to oily sludge
Heating.The result shows that the rate of recovery of pyrolysis oil is 80%, wherein light oil constituent content is 80wt%.
As can be seen from the above results, using oily sludge provided by the invention be classified pyrolysis plant and method by using
Pyrolysis classification can obtain the pyrolysis oil with high-quality in high yield, great prospects for commercial application.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case of can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (10)
1. a kind of oily sludge is classified pyrolysis plant, which is characterized in that it includes drying device that the oily sludge, which is classified pyrolysis plant,
(1), low temperature pyrogenation reaction unit (2), high temperature pyrolysis reaction device (3) and gas-liquid separation device (4)；Described in oily sludge introduces
Drying device is dried in (1), and the product of the drying, which is introduced into the low temperature pyrogenation reaction unit (2), carries out Low Temperature Thermal
Solution, the residue of the low temperature pyrogenation, which is introduced into the high temperature pyrolysis reaction device (3), carries out high temperature pyrolysis, the low temperature pyrogenation
The volatiles of volatiles and the high temperature pyrolysis, which are introduced into the gas-liquid separation device (4), carries out gas-liquid separation.
2. oily sludge according to claim 1 is classified pyrolysis plant, wherein the drying device (1), low temperature pyrogenation are anti-
Device (2), high temperature pyrolysis reaction device (3) and gas-liquid separation device (4) is answered respectively to be independently arranged and run.
3. oily sludge according to claim 1 or 2 is classified pyrolysis plant, wherein the drying device (1), Low Temperature Thermal
Solution reaction unit (2) and high temperature pyrolysis reaction device (3) integrated setting, and regulate and control to realize dry and divide by being segmented
Grade pyrolysis.
4. oily sludge according to claim 3 is classified pyrolysis plant, wherein when the drying device (1), low temperature pyrogenation
When reaction unit (2) and high temperature pyrolysis reaction device (3) integrated setting, the oily sludge classification pyrolysis plant includes
Oily sludge warehouse (5), feeding equipment (6), spiral pyrolysis reactor (7) and pyrolysis residue feed bin (9), the drying device
(1), low temperature pyrogenation reaction unit (2) and high temperature pyrolysis reaction device (3) are in the spiral pyrolysis reactor (7) along material
The different zones section of moving direction, by carrying out segmentation regulation and control to the spiral pyrolysis reactor (7) to realize dry, Low Temperature Thermal
Solution and high temperature pyrolysis；The oily sludge being stored in the oily sludge warehouse (5) passes through described in the feeding equipment (6) feeding
In spiral pyrolysis reactor (7), and it is dried successively, low temperature pyrolyzer and Pintsch process, it is the volatile matter of the drying, described low
The volatiles of the volatiles and the high temperature pyrolysis that warm solution, which are introduced into the gas-liquid separation device (4), carries out gas-liquid
Separation；The residue of the high temperature pyrolysis is discharged the high temperature pyrolysis reaction device (3) and enters pyrolysis residue feed bin (9).
5. oily sludge according to claim 4 is classified pyrolysis plant, wherein the oily sludge classification pyrolysis plant is also
Including being located at the gas-phase product collecting bin (8) above the spiral pyrolysis reactor (7), for by the volatile matter of the drying,
The volatiles of the volatiles of the low temperature pyrogenation and the high temperature pyrolysis introduce the gas-liquid separation device (4) it
It is preceding that it is collected.
6. oily sludge according to claim 4 or 5 is classified pyrolysis plant, wherein the oily sludge classification pyrolysis is set
Standby further includes the combustion reactor being connected with the gas-liquid separation device (4) and/or with the pyrolysis residue feed bin (9), is used for
The gaseous product of the gas-liquid separation device (4) will be originated from and/or the solid residue from the pyrolysis residue feed bin (9) carries out
Burning.
7. oily sludge according to claim 6 is classified pyrolysis plant, wherein the drying device (1), low temperature pyrogenation are anti-
It is directly to be added using gas heat carrier or solid thermal carriers to answer the mode of heating of device (2) and high temperature pyrolysis reaction device (3)
Thermal material, and/or, pass through reactor wall indirectly heat material；
Preferably, when the mode of heating is to directly heat material using gas heat carrier, the gas heat carrier comes from
The high-temperature gas that the combustion reactor generates；
Preferably, when the mode of heating is to directly heat material using solid thermal carriers, the solid thermal carriers come from
The high-temperature solid particle that the combustion reactor generates.
8. a kind of oily sludge is classified method for pyrolysis, which is characterized in that this method includes that oily sludge is dried, described dry
Dry product carries out low temperature pyrogenation, and the residue of the low temperature pyrogenation carries out high temperature pyrolysis, the volatiles of the low temperature pyrogenation
Gas-liquid separation is carried out with the volatiles of the high temperature pyrolysis, the temperature of the low temperature pyrogenation is less than the temperature of the high temperature pyrolysis
Degree.
9. oily sludge according to claim 8 is classified method for pyrolysis, wherein the temperature of the low temperature pyrogenation is 200-
500 DEG C, the time is 0.1-1 hours；The temperature of the high temperature pyrolysis is 500-900 DEG C, and the time is 0.1-1 hours.
10. oily sludge according to claim 8 is classified method for pyrolysis, wherein the temperature of the drying is 100-200
DEG C, and the content of the water in products of the drying point is no more than 20wt%.
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| CN109678307A (en) * | 2019-02-21 | 2019-04-26 | 阮文渊 | A kind of Three-section type heating non-stick pan oily sludge pyrolysis installation |
| CN110117140A (en) * | 2019-02-27 | 2019-08-13 | 中国石油大学(华东) | Microwave method oily sludge break milk separation-drying viscosity reduction-pyrolysis returning charge integral process system |
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| CN111977931A (en) * | 2020-09-15 | 2020-11-24 | 中国石油大学(华东) | Two-stage pyrolysis treatment system for oil-containing sludge |
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