CN103553290A - Resourceful treatment method of oil-containing sludge - Google Patents
Resourceful treatment method of oil-containing sludge Download PDFInfo
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Abstract
The invention relates to the technical field of high-temperature thermal analysis and particularly relates to an oil-containing sludge treatment method. The resource treatment method of the oil-containing sludge comprises the following steps that an incineration system heats up quartz sand; the heated quartz sand enters a thermal analysis system after cyclone separation; heat is transmitted to the oil-containing sludge by the high-temperature quartz sand, so that the oil-containing sludge reacts in a thermal analysis manner under a high-temperature anaerobic environment; the generated thermal analysis gas passes through a three-phase separator, so that oils, water and non-condensable gases are separated; coke bottom and the quartz sand in the thermal analysis residue are returned to the incineration system for being recycled. The resourceful treatment method disclosed by the invention has characteristics of high crude oil recovery, no secondary pollution and low energy consumption, so that various oil-containing sludge treatment and disposal problems generated in oil-field development and an oil refining process are effectively solved. The whole technical system is energy-saving and environment-friendly; meanwhile, resourceful, reduction and harmless treatment of the oil-containing sludge is realized.
Description
One, technical field:
The present invention relates to high temperature pyrolysis and analyse technical field, particularly a kind of recycling treatment method of oil-bearing sludge.
Two, background technology:
Oil field, in Development and Production process, inevitably produces a large amount of oily sludges.Through preliminary investigation, the annual oily sludge new increment of China reaches 800,000 tons of left and right, owing to containing water, silt, sulfide, benzene homologues, phenols, hydro carbons etc. in greasy filth, not only land occupation and space, and serious polluted air, soil and groundwater, restricted to a certain extent the development that oil field at home is produced.Therefore oily sludge is classified as dangerous solid waste (HW08) by country, develops a kind of oily sludge of can eliminating to the harm of the environment treatment technology of recyclable resource again, and the Sustainable development in oil field is had to important practical significance.
Oily sludge is of a great variety, character is complicated, corresponding treatment technology also presents diversified trend, contained Mud Treatment Technology has screening fluidisation-modified-centrifugation technique at present, burn, chemical heat is washed, pyrolysis is analysed, plough method, composting process, bio-reactor, solvent extraction technology etc., oil field at home adopts landfill more, thickening, solidification treatment, catalytic pyrolysis etc., its common shortcoming is to fail to recycle the crude oil with higher economic worth, high temperature pyrolysis is analysed and processed is to be widely used at present contained Mud Treatment Technology abroad, can realize the innoxious of oily sludge, minimizing, recycling treatment.Oily sludge source is different, and oil length is different, and low below 5%, height reaches more than 50%, if by mean value 20%, the nearly 100,000 tons of crude oil of the annual recoverable of resource technology are analysed in pyrolysis, have very considerable economic worth.
The principle that high temperature pyrolysis is analysed technology is that oily sludge burns certain temperature (being generally 450 ℃ of left and right, even higher) under the condition of anoxybiotic, and hydrocarbons is separated in complicated hydration and cracking reaction, and condensation is reclaimed.This technology has complete inorganicization of oily sludge, and hydro carbons high efficiente callback utilizes, and processing speed is fast, processes the advantages such as thorough.
Along with various countries dispose the further strict of index to oily sludge, this technology will become one of important way of disposal of oily sludge.The RUGSGO company performance of Denmark is more outstanding, and its technology is in shell ,BPDeng major oil companies successful Application.Some universities and colleges such as Tongji University, Xi-nan Urban Engineering Design Institute and R&D institution all carry out relevant pyrolysis and analyse technical study, but up to the present, have no the industrialized report of the hot dissection process of oily sludge solid waste.In China Liaohe Oil Field, carried out relevant hot dissection process test in place, China National Petroleum company limited was once devoted to study the hot dissection process of oily sludge, and declared " a kind of resource utilization method of oily sludge " in 2008, and the patent No. is
200610103671.But existing analytic method still contains tar in resolving the pyrolysis residue that fire grate goes out, and causes secondary pollution, the wasting of resources, and pyrolysis to analyse external energy energy consumption large.
Three, summary of the invention:
For the problems referred to above, the object of the invention is to propose a kind of recycling treatment method of oil-bearing sludge, first has reclaimed high value crude oil effectively, second has solved problem of environmental pollution conscientiously, having realized energy-autarchic and recycle to third high effect, is a set of greasy filth resource treatment technique that integrates energy-saving and environmental protection.Another object of the present invention is to provide a kind of oily sludge recycling treatment suite of equipment, and system arranges compactness, rationally, Resource Recycling Utilization, treatment effect is good.
Technical solution of the present invention is: a kind of recycling treatment method of oil-bearing sludge, incineration system heats quartz sand, after cyclonic separation, enter in pyrolysis analysis system, high quartz sand transfers heat to oily sludge, make its pyrolysis under high temperature anaerobic environment analyse reaction, the pyrolysis gassing generating is isolated oil product, water and non-condensable gas by triphase separator, and the cinder in pyrolysis residue, quartz sand are got back to recycling in incineration system.
Specifically comprising that burning, pyrolysis are analysed with resource reclaims.
The first step is burned: the cinder that incineration system institute heat requirement is produced by pyrolysis provides, the cinder heat release of burning in Circulation fluidized-bed furnace, temperature of combustion 900-1200 ℃, quartz sand is heated to more than 850 ℃, after cyclonic separator separation, the high-temperature flue gas of 800-900 ℃ is by air preheater and the multistage recovery heat of steam oven, 80-120 after preheating ℃ air is the secondary air as Circulation fluidized-bed furnace as the air of a wind of Circulation fluidized-bed furnace, 80-150 ℃, and water vapor is distributed to pneumavalve and other gas equipments; High quartz sand enters airtight rotary kiln pyrogenation and analyses stove;
Second step pyrolysis is analysed: pyrolysis analysis system adopts rotary kiln pyrogenation to analyse stove, burn high quartz sand after separation and enter airtight rotary kiln pyrogenation and analyse stove pyrolysis energy consumption is provided, the greasy filth of oil-containing 10-30% and high quartz sand enter pyrolysis by weight the ratio of 1:4-10 and analyse in stove; Both mix generation pyrolysis completely and analyse reaction under the slow rotation (6-8r/min) of body of heater, the pyrolysis gassing generating reclaims oil product, water and non-condensable gas through triphase separator, pyrolysis residue (containing cinder and quartz sand) enters Circulation fluidized-bed furnace, cinder wherein enters incineration system heat energy is provided, and quartz sand is cycled to repeat use as thermoset carrier;
The 3rd step resource reclaims: the gasoline in oily sludge Crude Oil component, kerosene, solar oil are along with the reaction separation of vaporizing is successively analysed in pyrolysis, heavy gas oil and residual oil are at high temperature cracked into the non-condensable gases such as methane, ethane, alkene, alkynes, hydrogen sulfide on a small quantity, all the other form cinder, light constituent crude oil and non-condensable gas reclaim, and cinder makes full use of as fuel.
The raw cinder of described pyrolysis division is black, and containing a large amount of macromolecule hydrocarbons, chief component is 39.7% fixed carbon, 33.6% volatile matter, 26.7% ash content, and net calorific value is 20-25MJ/Kg.
Described second step pyrolysis is analysed, preferably greasy filth and the high quartz sand weight ratio 1:6 of oil-containing 10-30%.
Described second step pyrolysis is analysed, and temperature of reaction 450-600 ℃ is analysed in pyrolysis, under anaerobic or anoxia condition, reacts.
Described second step pyrolysis is analysed, high quartz sand temperature 800-900 ℃.
A kind of oily sludge recycling treatment suite of equipment that treatment process of the present invention adopts, comprise that pyrolysis is analysed, burning, resource are reclaimed, the large system of energy recovery four, oily sludge pyrolysis in pyrolysis analysis system, what pyrolysis analysis system was discharged reclaims through resource recovering system, the cinder of discharging enters incineration system, the high quartz sand of incineration system heating is sent to pyrolysis analysis system, the high-temperature flue gas that incineration system produces reclaims by heat reclaiming system, and isolated oil product and non-condensable gas are collected resource recovering system;
Wherein said pyrolysis analysis system is analysed stove, quartz sand feed bin and greasy filth feed bin by rotary kiln pyrogenation and is formed, it is a high temperature hypoxia response container that rotary kiln pyrogenation is analysed stove, quartz sand feed bin and greasy filth feed bin are communicated with the opening for feed that rotary kiln pyrogenation is analysed stove, the outlet of pyrolysis gassing is communicated with resource recovering system, and pyrolysis residue outlet is connected with Circulation fluidized-bed furnace with screw feeder by pneumatic U-shaped valve; Described rotary kiln pyrogenation is analysed stove and is comprised of kiln body, tightness system, transmission mechanism, bracing or strutting arrangement.Transmission mechanism is to make rotary kiln pyrogenation analyse stove with lasting rotation of revolution of 6-8 r/min; Cinder after pyrolysis is analysed is by pneumatic U-shaped valve and quantitative, airtight being transported in Circulation fluidized-bed furnace of screw feeder, and incineration system and pyrolysis analysis system have formed a closed circulation loop.
Wherein said incineration system comprises Circulation fluidized-bed furnace and cyclonic separator; Circulation fluidized-bed furnace cinder entrance is communicated with the outlet of pyrolysis analysis system cinder, take quartz sand as thermal barrier burning, and high-temperature flue gas and quartz sand discharge port are communicated with cyclonic separator, and after cyclonic separator, Solid Conveying and Melting is to quartz sand feed bin, and flue gas is communicated with heat reclaiming system;
Described Circulation fluidized-bed furnace comprises body of heater, capping device, base, ash exhauster, body of heater is cylindrical cavity, the wall of body of heater is provided with opening for feed, secondary air entrance, smoke outlet, instrumentation, tightness system, body of heater lower end is micro-taper, tapering is 10～20 degree, bottom is connected with base with form of flanges, secondary air is positioned at emulsion zone and the freeboard of fluidized bed intersection of body of heater, sustained height level is evenly established 2-4 secondary air entrance, furnace shell inwall is provided with thermal insulation layer, opening for feed is provided with pneumatic U-shaped valve, analysing fire grate materials device with external pyrolysis is again connected, bottom of furnace body is provided with air-distributing device, air-distributing device adopts funnel-cap type cloth wind, on body of heater wall, explosion-proof equipment is installed, explosion-proof equipment is connected with body of heater by interface, explosion-proof pad is between flange and explosion-proof flange, flange is to be fixed by high-strength bolt group, base is provided with wind entrance one time, base lower end connects ash exhauster, base is comprised of base plate, base housing, combustion unit and thermal insulation layer, base plate is fixedly connected with base housing, base plate and base housing inner-wall surface are provided with thermal insulation layer, combustion unit is comprised of burner and burner interface, on base housing, offer burner interface and a wind entrance, ash exhauster is by removing ash pipeline, middle bulk cement storage tank and upper and lower two closed units that high temperature cut-off valve forms, removing ash pipeline is communicated with body of heater, and middle bulk cement storage tank is arranged between upper and lower two high temperature cut-off valves, instrumentation comprises temperature measuring instrument and pressure measuring instruments, lays respectively on the base height different with body of heater, capping device is established on body of heater top, gland one and gland two lower cover silica glasss, then be separately fixed on upper cover plate and embedded board by high-strength bolt, between upper cover plate bottom surface and inboard wall of furnace body, be provided with thermal insulation layer.
Wherein said resource recovering system comprises triphase separator, oil storage vessel, gas-holder; The outlet of pyrolysis gassing is communicated with triphase separator, and triphase separator oil product, water and non-condensable gas pipeline are connected respectively oil storage vessel, Sewage treatment systems and gas-holder; The cooling water outlet of described triphase separator connects cooling water recycling system, and the hot water after heat exchange is as domestic water.
Wherein said heat reclaiming system comprises air preheater, steam oven, triphase separator, Circulation fluidized-bed furnace exhanst gas outlet connects cyclonic separator pneumatic outlet and is communicated with successively air preheater, the multistage recovery heat energy of steam oven, wind entrance of the air communication Circulation fluidized-bed furnace after preheating and secondary air entrance, the water vapor that steam oven produces is transported to pneumavalve and other gas equipments, part is collected in recycle in drum, flue gas through fly-ash separator by smoke stack emission;
What described air preheater adopted is shell and tube air preheater, mainly by main body, gas approach, exhanst gas outlet, inlet of cold air, a wind, secondary air outlet forms, flue gas flows through in tube bank emits a large amount of heat energy, freezing air washes away tube bank by stagger arrangement and absorbs heat, gas blower is directly connected to air intlet end, at air vout end, pass through wind entrance of flue communication loop fluid bed furnace and secondary air entrance, flue gas is discharged to flue by exhanst gas outlet, through flue, enter steam oven, the multistage recovery heat energy of steam oven, a steam outlet part is communicated with pneumavalve and other gas equipments, a part is communicated with drum, after heat exchange, flue gas enters sack cleaner by flue, by induced draft fan, flue gas is introduced to chimney, the ash of being discharged by sack cleaner and the ash of being discharged by the ash exhauster of Circulation fluidized-bed furnace flow to manufacture building equipment by worm conveyor.
Operational path of the present invention is complete, and the outstanding advantage of a whole set of technology embodies both ways:
First, high efficiente callback utilizes the oil component in oily sludge.Crude oil reclaims with the form of lightweight oil, solidifying combustible gas, and the rate of recovery approximately 51.56% remains nearly 48.56% crude oil and enters burning boiler utilizations of fully burning with cinder form, therefore total recovery utilization rate approaches 100%(with certain greasy filth calculating, in Table 1).
Secondly, a whole set of technology is without external energy, and pyrolysis is analysed reaction power consumption and by the raw cinder burning heat release of oily sludge pyrolysis division, provided completely.The raw cinder of pyrolysis division is black block shape (or particulate state), main
elementary compositionfor carbon, remaining is hydrogen, oxygen, nitrogen, sulphur and metallic element, can for Circulation fluidized-bed furnace, burn as fuel, and the cinder burning of upper treatment cycle generation, there is higher thermal value, release of heat after burning
, liberated heat can meet the pyrolysis of this cycle completely and analyse institute's heat requirement.Quartz sand is elevated to more than 850 ℃ temperature required absorption heat from normal temperature
, endothermic heat of reaction is analysed in greasy filth pyrolysis
, through experimental calculation, three meets
, i.e. a certain amount of oily sludge pyrolysis is analysed institute's energy requirement and can be provided by the cinder in pyrolysis residue completely, without extraneous supplementing energy, has realized the complete self-sufficiency (calculating with certain greasy filth, in Table 2) of energy.
The required secondary air of Circulation fluidized-bed furnace wherein, it is the high-temperature flue gas (800-900 ℃) of discharging from Circulation fluidized-bed furnace, respectively by air preheater, the multistage recovery heat energy of steam oven, air after preheating can be used as once (80-120 ℃) and the secondary air (80-150 ℃) of Circulation fluidized-bed furnace, the water vapor that steam oven produces is partly supplied with pneumavalve and other gas equipments, part is collected in recycle in drum, and flue gas is discharge after treatment finally.Pyrolysis gassing is separated by three-phase condensation separator, cooling water circulation utilization.
Certain greasy filth crude oil of table 1. forms and yield is analysed in pyrolysis
Note: with oil length 20%, calculate.
Energy consumption calculation is analysed in the pyrolysis of table 2. oily sludge
Note: with oily sludge quality 0.42t/h, quartz sand quality 2.52t/h calculates.
The present invention is application in oil field sludge is processed, and can realize the minimizing of oily sludge, innoxious, recycling, and whole system energy-conserving and environment-protective effectively solve environmental pollution and the final problem of outlet of oily sludge, and reclaim the energy substance in mud.
Four, accompanying drawing explanation:
Fig. 1 is oil-containing sludge recycling process schema of the present invention.
Fig. 2 is oily sludge recycling treatment integrated system structural representation of the present invention.
Fig. 3 is Circulation fluidized-bed furnace structural representation in integrated system of the present invention.
In Fig. 2,1 Circulation fluidized-bed furnace, 2 rotary kiln pyrogenations are analysed stove, 3 cyclonic separators, 4 quartz sand feed bins, 5 greasy filth feed bins, 6 air heat exchangers, 6-1 cool air inlet, wind of 6-2,6-3 secondary air, 7 steam ovens, 8 drums, 9 low pressure and are divided cylinder pressure, 10 triphase separators, 11 oil storage vessels, 12 gas-holder, 13 fly-ash separators, 14 chimneys, 15 lime-ash transmitting devices, 16 to manufacture building equipments.
In Fig. 3,1-1 body of heater, 1-2 upper cover, 1-3 base, 1-4 ash exhauster, 1-5 opening for feed, 1-6 air-distributing device, 1-7 tightness system, 1-8 manhole, 1-9 instrumentation, 1-10 thermal insulation layer, 1-11 fume extractor, 1-12 explosion-proof equipment, wind entrance of 1-13,1-14 secondary air entrance, 1-15 combustion unit.
Five, embodiment:
By reference to the accompanying drawings, the technology of the present invention route and concrete implementing procedure are elaborated, but the present invention is not limited to specific embodiment.
Concrete technology is referring to Fig. 1, and the first step is burned: high temperature incineration reaction occurs in Circulation fluidized-bed furnace 1, and temperature is 900-1200 ℃, and fluidisation-heating agent quartz sand is heated to more than 850 ℃, and fuel is provided by the cinder producing after pyrolysis completely, high quartz sand (≤850 ℃) be fluidized flue gas and carry the exhanst gas outlet discharge from Circulation fluidized-bed furnace 1, enter cyclonic separator 3 and carry out gas solid separation, high quartz sand separation is also stored in quartz sand feed bin 4, high-temperature flue gas (800-900 ℃) successively enters air preheater 6 and the multistage recovery heat of steam oven 7, air after preheating provides 80-120 ℃ of wind 6-2 and 80-150 ℃ of secondary air 6-3 for Circulation fluidized-bed furnace, and the water vapor that steam oven 7 produces partly enters low pressure sub-cylinder, supply with pneumavalve or other gas utilization units, part recycle, useless flue gas is finally through fly-ash separator 13 discharges,
Second step pyrolysis is analysed: high quartz sand is quantitatively sent into airtight rotary kiln pyrogenation and analysed in stove 2, meanwhile screw feeder is by the oily sludge in greasy filth feed bin 5, send into rotary kiln pyrogenation and analyse stove 2, oily sludge and high quartz sand part by weight are 1:6, rotary kiln pyrogenation is analysed stove 2 and is continued to rotate with 8 r/min, make high quartz sand and oily sludge fully mix also pyrolysis and analyse reaction, temperature of reaction 450-600 ℃, under anaerobic or anoxia condition, react, produce pyrolysis gassing and pyrolysis residue, pyrolysis residue enters Circulation fluidized-bed furnace 1 burning, utilize cinder burning heat release wherein, while heating carrier quartz sand, high quartz sand makes its pyrolysis by thermal energy transfer to greasy filth, through experiment calculation, the burning of pyrolysis cinder releases energy and enough provides pyrolysis to analyse heat absorption, and the heat of recyclable high-temperature flue gas, reuses quartz sand simultaneously.
The 3rd step resource reclaims: after separation is analysed in pyrolysis, gasoline in oily sludge Crude Oil component, kerosene, solar oil are along with the reaction separation of vaporizing is successively analysed in pyrolysis, heavy gas oil and residual oil are at high temperature cracked into the non-condensable gases such as methane, ethane, alkene, alkynes, hydrogen sulfide on a small quantity, reclaim oil product, water and non-condensable gas, oil product and non-condensable gas are stored in respectively oil storage vessel 11 and gas-holder 12, and water enters Sewage treatment systems.
Circulation fluidized-bed furnace need regularly carry out deslagging and supplementary quartz sand, guarantees the quality of thermal barrier; The steam that triphase separator 10 and steam oven 7 produce is by drum 8 recycles.Whole technological system energy-conserving and environment-protective, have realized resource utilization, minimizing, the harmless treatment of oily sludge.
After testing, lightweight oil in crude oil reclaims with oil product form, the rate of recovery 30.14%, and non-condensable gas (methane, ethane, alkene, alkynes, the hydrogen sulfide etc.) rate of recovery is about 21.12%, remain 48.56% crude oil and stay burning utilization in cinder, whole system can realize 100% of crude oil and recycle.
A kind of oily sludge recycling treatment suite of equipment that treatment process of the present invention adopts is referring to Fig. 2, comprise that pyrolysis is analysed, burning, resource are reclaimed, the large system of energy recovery four, oily sludge pyrolysis in pyrolysis analysis system is analysed, what pyrolysis analysis system was discharged reclaims through resource recovering system, the cinder of discharging enters incineration system, the high quartz sand of incineration system heating is sent to pyrolysis analysis system, the high-temperature flue gas that incineration system produces reclaims by heat reclaiming system, and isolated oil product and non-condensable gas are collected resource recovering system;
Wherein said pyrolysis analysis system is analysed stove 2, quartz sand feed bin 4 and greasy filth feed bin 5 by rotary kiln pyrogenation and is formed, it is high temperature hypoxia response containers that rotary kiln pyrogenation is analysed stove 2, quartz sand feed bin 4 and greasy filth feed bin 5 are communicated with the opening for feed that rotary kiln pyrogenation is analysed stove 2, the outlet of pyrolysis gassing is communicated with resource recovering system, and pyrolysis residue outlet is connected with Circulation fluidized-bed furnace 1 with screw feeder by pneumatic U-shaped valve; Described rotary kiln pyrogenation is analysed stove 2 and is comprised of kiln body, tightness system, transmission mechanism, bracing or strutting arrangement.Transmission mechanism is to make rotary kiln pyrogenation analyse stove 2 with lasting rotation of revolution of 6-8 r/min; Cinder after pyrolysis is analysed is by pneumatic U-shaped valve and quantitative, airtight being transported in Circulation fluidized-bed furnace 1 of screw feeder, and incineration system and pyrolysis analysis system have formed a closed circulation loop.
Wherein said incineration system comprises Circulation fluidized-bed furnace 1 and cyclonic separator 3; Circulation fluidized-bed furnace 1 cinder entrance is communicated with the outlet of pyrolysis analysis system cinder, take quartz sand as thermoset carrier burning, high-temperature flue gas and quartz sand discharge port are communicated with cyclonic separator 3, and after cyclonic separator 3, Solid Conveying and Melting is to quartz sand feed bin 4, and flue gas is communicated with heat reclaiming system;
Described circulating fluidized bed furnace structure is referring to Fig. 3, comprise body of heater 1-1, capping device 1-2, base 1-3, ash exhauster 1-4 body of heater 1-1 is cylindrical cavity, the wall of body of heater 1-1 is provided with opening for feed 1-5, secondary air entrance 1-14, smoke outlet 1-11, tightness system 1-7, instrumentation 1-9, body of heater 1-1 lower end is micro-taper, tapering is 10-20 degree, bottom is connected with base with form of flanges, secondary air is positioned at emulsion zone and the freeboard of fluidized bed intersection of body of heater, sustained height level is evenly established 2-4 secondary air entrance 1-14, furnace shell inwall is provided with thermal insulation layer, opening for feed 1-5 is provided with pneumatic U-shaped valve, analysing fire grate materials device with external pyrolysis is again connected, bottom of furnace body is provided with air-distributing device 1-6, air-distributing device 1-6 adopts funnel-cap type cloth wind, explosion-proof equipment 1-12 is installed on body of heater wall, explosion-proof equipment 1-12 is connected with body of heater 1-1 by interface, explosion-proof pad is between flange and explosion-proof flange, flange is to be fixed by high-strength bolt group, base 1-3 is provided with wind entrance 1-13 one time, base lower end connects ash exhauster 1-4, base is by base plate, base housing, combustion unit and thermal insulation layer form, base plate is fixedly connected with base housing, base plate and base housing inner-wall surface are provided with thermal insulation layer, combustion unit is comprised of burner and burner interface, on base housing, offer burner interface and a wind entrance, ash exhauster 1-4 is by removing ash pipeline, the closed unit that middle bulk cement storage tank and upper and lower two high temperature cut-off valves form, removing ash pipeline is communicated with body of heater, middle bulk cement storage tank is arranged between upper and lower two high temperature cut-off valves, instrumentation 1-9 comprises temperature measuring instrument and pressure measuring instruments, lays respectively on the base height different with body of heater, capping device 1-2 is established on body of heater top, gland one and gland two lower cover silica glasss, then be separately fixed on upper cover plate and embedded board by high-strength bolt, between upper cover plate bottom surface and inboard wall of furnace body, be provided with thermal insulation layer 1-10.
Wherein said resource recovering system comprises triphase separator 10, oil storage vessel 11, gas-holder 12; The outlet of pyrolysis gassing is communicated with triphase separator 10, and triphase separator 10 oil products, water and non-condensable gas pipeline are connected respectively oil storage vessel 11, Sewage treatment systems and gas-holder; The cooling water outlet of described triphase separator 10 connects cooling water recycling system, and the hot water after heat exchange is as domestic water.
Wherein said heat reclaiming system comprises air preheater 6, steam oven 7, triphase separator 10, Circulation fluidized-bed furnace 1 exhanst gas outlet connects cyclonic separator 3, exhanst gas outlet is communicated with air preheater 6, the multistage recovery heat energy of steam oven 7 successively, wind entrance of the air communication Circulation fluidized-bed furnace 1 after preheating and secondary air entrance, the water vapor that steam oven produces is transported to pneumavalve and other gas equipments, part is collected in recycle in drum 8, and flue gas is discharged by chimney 14 through fly-ash separator 13;
What described air preheater 6 adopted is shell and tube air preheater, mainly by main body, gas approach, exhanst gas outlet, inlet of cold air, a wind, secondary air outlet forms, flue gas flows through in tube bank emits a large amount of heat energy, freezing air washes away tube bank by stagger arrangement and absorbs heat, gas blower is directly connected to air intlet end, at air vout end, pass through wind entrance of flue communication loop fluid bed furnace and secondary air entrance, flue gas is discharged to flue by exhanst gas outlet, through flue, enter steam oven 7, the multistage recovery heat energy of steam oven 7, water vapor 7 outlet parts are communicated with pneumavalve and other gas equipments, a part is communicated with drum 8, after heat exchange, flue gas enters sack cleaner 13 by flue, by induced draft fan, flue gas is introduced to chimney 14, the ash of being discharged by sack cleaner 13 and the ash of being discharged by the ash exhauster of Circulation fluidized-bed furnace 1 flow to manufacture building equipment by worm conveyor 15.
Claims (10)
1. a recycling treatment method of oil-bearing sludge, it is characterized in that: incineration system heats quartz sand, after cyclonic separation, enter in pyrolysis analysis system, high quartz sand transfers heat to oily sludge, make its pyrolysis under high temperature anaerobic environment analyse reaction, the pyrolysis gassing generating is isolated oil product, water and non-condensable gas by triphase separator, and the cinder in pyrolysis residue, quartz sand are got back to recycling in incineration system.
2. a kind of recycling treatment method of oil-bearing sludge according to claim 1, is characterized in that: specifically comprising that burning, pyrolysis are analysed with resource reclaims:
The first step is burned: the cinder that incineration system institute heat requirement is produced by pyrolysis provides, the cinder heat release of burning in Circulation fluidized-bed furnace, 900～1200 ℃ of temperature of combustion, quartz sand is heated to 800-900 ℃, after cyclonic separator separation, the high-temperature flue gas of 800～900 ℃ is by air preheater and the multistage recovery heat of steam oven, 80～120 ℃ of air after preheating are as a wind of Circulation fluidized-bed furnace, the air of 80～150 ℃ as the secondary air of Circulation fluidized-bed furnace, and water vapor is distributed to pneumavalve and other gas equipments; High quartz sand enters airtight rotary kiln pyrogenation and analyses stove;
Second step pyrolysis is analysed: pyrolysis analysis system adopts rotary kiln pyrogenation to analyse stove, burn high quartz sand after separation and enter airtight rotary kiln pyrogenation and analyse stove pyrolysis energy consumption is provided, the greasy filth of oil-containing 10-30% and high quartz sand enter pyrolysis by weight the ratio of 1:4-10 and analyse in stove; Both mix generation pyrolysis completely and analyse reaction under the 6-8r/min of body of heater slow rotation, the pyrolysis gassing generating reclaims oil product, water and non-condensable gas through triphase separator, pyrolysis residue enters Circulation fluidized-bed furnace, cinder wherein enters incineration system heat energy is provided, and quartz sand is cycled to repeat use as thermoset carrier;
The 3rd step resource reclaims: the gasoline in oily sludge Crude Oil component, kerosene, solar oil are along with the reaction separation of vaporizing is successively analysed in pyrolysis, heavy gas oil and residual oil are at high temperature cracked into the non-condensable gases such as methane, ethane, alkene, alkynes, hydrogen sulfide on a small quantity, all the other form cinder, light constituent crude oil and non-condensable gas reclaim, and cinder is done fuel burning and utilized heat energy.
3. a kind of recycling treatment method of oil-bearing sludge according to claim 2, it is characterized in that: the cinder that described pyrolysis produces is black, containing a large amount of macromolecule hydrocarbons, chief component is 39.7% fixed carbon, 33.6% volatile matter, 26.7% ash content, and net calorific value is 12-20MJ/Kg.
4. a kind of recycling treatment method of oil-bearing sludge according to claim 2, is characterized in that: described second step pyrolysis is analysed, the greasy filth of oil-containing 10-30% and high quartz sand weight ratio 1:6.
5. a kind of recycling treatment method of oil-bearing sludge according to claim 2, is characterized in that: described second step pyrolysis is analysed, and temperature of reaction 450-600 ℃ is analysed in pyrolysis, under anaerobic or anoxia condition, reacts.
6. a kind of recycling treatment method of oil-bearing sludge according to claim 2, is characterized in that: described second step pyrolysis is analysed, high quartz sand temperature 800-900 ℃.
7. an oily sludge recycling treatment suite of equipment, it is characterized in that: comprise that pyrolysis is analysed, burning, resource are reclaimed, the large system of energy recovery four, oily sludge pyrolysis in pyrolysis analysis system, what pyrolysis analysis system was discharged reclaims through resource recovering system, the cinder of discharging enters incineration system, the high quartz sand of incineration system heating is sent to pyrolysis analysis system, the high-temperature flue gas that incineration system produces reclaims by heat reclaiming system, enter incineration system recycling, isolated oil product and non-condensable gas are collected resource recovering system;
Wherein said pyrolysis analysis system is analysed stove, quartz sand feed bin and greasy filth feed bin by rotary kiln pyrogenation and is formed, it is a high temperature hypoxia response container that rotary kiln pyrogenation is analysed stove, quartz sand feed bin and greasy filth feed bin are communicated with the opening for feed that rotary kiln pyrogenation is analysed stove, the outlet of pyrolysis gassing is communicated with resource recovering system, and pyrolysis residue exports communication loop fluid bed furnace by the road; Described rotary kiln pyrogenation is analysed stove and is comprised of kiln body, tightness system, transmission mechanism, bracing or strutting arrangement; Transmission mechanism is to make rotary kiln pyrogenation analyse stove with lasting rotation of revolution of 6-8 r/min; Cinder after pyrolysis is analysed is by pneumatic U-shaped valve and quantitative, airtight being transported in Circulation fluidized-bed furnace of screw feeder, and incineration system and pyrolysis analysis system have formed a closed circulation loop.
8. a kind of recycling treatment method of oil-bearing sludge according to claim 7, is characterized in that: wherein said incineration system comprises Circulation fluidized-bed furnace and cyclonic separator; Circulation fluidized-bed furnace cinder entrance is communicated with the outlet of pyrolysis analysis system cinder, take quartz sand as thermal barrier burning, and high-temperature flue gas and quartz sand discharge port are communicated with cyclonic separator, and after cyclonic separator, Solid Conveying and Melting is to quartz sand feed bin, and flue gas is communicated with heat reclaiming system;
Described Circulation fluidized-bed furnace comprises body of heater, capping device, base, ash exhauster, body of heater is cylindrical cavity, the wall of body of heater is provided with opening for feed, secondary air entrance, smoke outlet, instrumentation, tightness system, body of heater lower end is micro-taper, tapering is 10～20 degree, bottom is connected with base with form of flanges, secondary air is positioned at emulsion zone and the freeboard of fluidized bed intersection of body of heater, sustained height level is evenly established 2-4 secondary air entrance, furnace shell inwall is provided with thermal insulation layer, opening for feed is provided with pneumatic U-shaped valve, analysing fire grate materials device with external pyrolysis is again connected, bottom of furnace body is provided with air-distributing device, air-distributing device adopts funnel-cap type cloth wind, on body of heater wall, explosion-proof equipment is installed, explosion-proof equipment is connected with body of heater by interface, explosion-proof pad is between flange and explosion-proof flange, flange is to be fixed by high-strength bolt group, base is provided with wind entrance one time, base lower end connects ash exhauster, base is comprised of base plate, base housing, combustion unit and thermal insulation layer, base plate is fixedly connected with base housing, base plate and base housing inner-wall surface are provided with thermal insulation layer, combustion unit is comprised of burner and burner interface, on base housing, offer burner interface and a wind entrance, ash exhauster is by removing ash pipeline, middle bulk cement storage tank and upper and lower two closed units that high temperature cut-off valve forms, removing ash pipeline is communicated with body of heater, and middle bulk cement storage tank is arranged between upper and lower two high temperature cut-off valves, instrumentation comprises temperature measuring instrument and pressure measuring instruments, lays respectively on the base height different with body of heater, capping device is established on body of heater top, gland one and gland two lower cover silica glasss, then be separately fixed on upper cover plate and embedded board by high-strength bolt, between upper cover plate bottom surface and inboard wall of furnace body, be provided with thermal insulation layer.
9. a kind of recycling treatment method of oil-bearing sludge according to claim 7, is characterized in that: wherein said resource recovering system comprises triphase separator, oil storage vessel, gas-holder; The outlet of pyrolysis gassing is communicated with three-phase condenser, and triphase separator oil product, water and non-condensable gas pipeline are connected respectively oil storage vessel, Sewage treatment systems and gas-holder; The cooling water outlet of described triphase separator connects cooling water recycling system, and the hot water after heat exchange is as domestic water.
10. a kind of recycling treatment method of oil-bearing sludge according to claim 7, it is characterized in that: wherein said heat reclaiming system comprises air preheater, steam oven, triphase separator, Circulation fluidized-bed furnace exhanst gas outlet connects cyclonic separator pneumatic outlet and is communicated with successively air preheater, the multistage recovery heat energy of steam oven, wind entrance of the air communication Circulation fluidized-bed furnace after preheating and secondary air entrance, the water vapor that steam oven produces is transported to pneumavalve and other gas equipments, part is collected in recycle in drum, flue gas through fly-ash separator by smoke stack emission,
What described air preheater adopted is shell and tube air preheater, mainly by main body, gas approach, exhanst gas outlet, inlet of cold air, a wind, secondary air outlet forms, flue gas flows through in tube bank emits a large amount of heat energy, freezing air washes away tube bank by stagger arrangement and absorbs heat, gas blower is directly connected to air intlet end, at air vout end, pass through wind entrance of flue communication loop fluid bed furnace and secondary air entrance, flue gas is discharged to flue by exhanst gas outlet, through flue, enter steam oven, the multistage recovery heat energy of steam oven, a steam outlet part is communicated with pneumavalve and other gas equipments, a part is communicated with drum, after heat exchange, flue gas enters sack cleaner by flue, by induced draft fan, flue gas is introduced to chimney, the ash of being discharged by sack cleaner and the ash of being discharged by the ash exhauster of Circulation fluidized-bed furnace flow to manufacture building equipment by worm conveyor.
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