CN209481431U - High concentration petroleum sludge green cleaning-thermal desorption integrated technology processing system - Google Patents

High concentration petroleum sludge green cleaning-thermal desorption integrated technology processing system Download PDF

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Publication number
CN209481431U
CN209481431U CN201821412087.3U CN201821412087U CN209481431U CN 209481431 U CN209481431 U CN 209481431U CN 201821412087 U CN201821412087 U CN 201821412087U CN 209481431 U CN209481431 U CN 209481431U
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China
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thermal desorption
outlet
greasy filth
oil
sludge
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杨崎峰
宋海农
周永信
林宏飞
黎秋君
廖长君
黄祖浩
王爱
李智华
赵志勇
曹斐姝
黄锦孙
谢湉
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Guangxi Bossco Environmental Protection Technology Co Ltd
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Guangxi Bossco Environmental Protection Technology Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The utility model discloses a kind of high concentration petroleum sludge green cleaning-thermal desorption integrated technology processing system, which includes the processing step of homogeneous removal of impurities pretreatment, chemico-heating wash processing, separation of solid and liquid and water-oil separating, greasy filth thermal desorption and high-temp combustion oxidation, heat exchange and tail gas cooling dedusting;The processing system includes greasy filth chemico-heating wash system and the innoxious thermal desorption system of greasy filth, greasy filth chemico-heating wash system is sequentially connected and is formed by greasy filth homogeneous slot, greasy filth chemico-heating wash tank, efficient solid-liquid separator, oil water separator, sewerage integrated processing system, water tank, and the innoxious thermal desorption system of greasy filth is mainly made of sludge dryer, condensate recovery system, thermal desorption feed system, thermal desorption system, high-temp combustion oxidative system, waste heat boiler and discharge system.The multi-efficiencies such as the resource recyclings such as petroleum substance and heat, oily sludge minimizing, innoxious can be achieved at the same time using chemico-heating wash technology and thermal desorption technology conjunctive use in the utility model.

Description

High concentration petroleum sludge green cleaning-thermal desorption integrated technology processing system
Technical field
The utility model relates to greasy filth Treatment process field, specifically a kind of high concentration petroleum sludge green cleaning-Re Tuo Attached integrated technology processing system.
Background technique
As a kind of chemical energy source, petroleum inevitably results from big during exploitation, transport, storage, processing etc. Waste residue, waste water and the exhaust gas of amount bring huge potential threat to social environment and human security.The especially oil-containing of high concentration Sludge contains the noxious material of the foul smellings such as a large amount of benzene homologues, anthracene, phenols, pyrene, will if oily sludge cannot be handled in time Different degrees of influence can be caused to production area and surrounding enviroment: the oil gas volatilization in oily sludge can make in production area Air quality total hydrocarbon concentration is exceeded;The oily sludge polluted surface water for being scattered and stacking even underground water, makes COD, BOD in water It is severely exceeded with petroleum-type;Oily sludge contains a large amount of crude oil, causes Hydrocarbon in Soil exceeded, and soil hardening makes region Interior vegetation is destroyed, and grass-land deterioration, ecological environment is affected.Certain hydrocarbons as contained in crude oil, which have, to be caused Cancer, teratogenesis, mutagenesis, Sludge in Oilfields have been cited as dangerous solid waste (HW08) and are managed.
Greasy filth usually by oil content greater than 15% or more is referred to as high concentration petroleum sludge, is directed to high concentration petroleum at present Sludge, which has, carries out crude oil recovery using the method for heat chemistry cleaning, but only uses heat chemistry ablution, and the greasy filth after cleaning is still residual Higher oil content is stayed, the standard for being unable to reach direct emission or utilizing.If with directly-heated type thermal desorption to the stone of high concentration Greasy dirt directly carries out harmless treatment, and there are biggish security risks, and there are energy consumption height and waste petroleum resources etc. Disadvantage.
Utility model content
For disadvantage of the existing technology, the purpose of this utility model is to provide a kind of high concentration petroleum sludge greens Cleaning-thermal desorption integrated technology processing method and processing system, it is highly concentrated using cleaning technique and thermal desorption technology Combined Treatment The petroleum sludge of degree, can Resource recovery and safely to greasy filth carry out harmless treatment.
In order to achieve the above purposes, the technical solution adopted by the utility model is:
A kind of high concentration petroleum sludge green cleaning of the utility model-thermal desorption integrated technology processing method, including it is as follows Processing step:
(1) homogeneous removal of impurities pretreatment: carrying out quenched, decentralized processing for greasy filth, and removes the rubbish incidental in greasy filth slurry;
(2) chemico-heating wash is handled: having the chemical heat of hot water and cleaning agent in being sent into through homogeneous removal of impurities treated greasy filth It in cleaning of evaporator, by stirring, detaches crude oil from greasy filth, scrapes out at the top of the oily chemically hot wash tank detached, It is stored in recycling oil tank, the solid phase after chemico-heating wash is chemically in the tank bottom discharge feeding efficient solid-liquid separator of hot wash tank;
(3) it separation of solid and liquid and water-oil separating: is separated by solid-liquid separation by efficient solid-liquid separator, contains the greasy filth isolated Oil cut rate is down to 3%~6%, and moisture content is 60%~70%, and greasy filth is then delivered to greasy filth working area and keeps in or is sent directly into In sludge dryer, the sewage that efficient solid-liquid separator is isolated is sent into oil water separator, will pass through oil water separator point The oil separated out is sent into recycling oil tank, and the sewage that oil water separator is isolated is sent into sewerage integrated processing system Reason, by treated, water is stored in water tank, is back in chemical heat cleaning of evaporator;
(4) greasy filth desiccation and condensing recovery processing: the greasy filth that will be fed into sludge dryer is dried to moisture content 20% It is condensed hereinafter, the steam that drying process generates is sent into condensate recovery system, condensate liquid is sent by oil and water after condensing Oil water separator carries out water-oil separating;
(5) processing of greasy filth thermal desorption and high-temp combustion oxidation processes: sludge dryer treated oily sludge is sent into The thermal desorption room temperature of thermal desorption system, thermal desorption system controls between 300-750 DEG C, and ensures that thermal desorption room is in micro- negative The state of pressure, while making the conveying direction of greasy filth and the flow direction of flue gas on the contrary, and ensuring that greasy filth is complete in the state of anoxic It is cracked at desorption;
(6) heat exchange process: condensing recovery system in the flue gas and step (4) that thermal desorption system in step (5) is generated The uncondensable light components that system generates are delivered to high-temp combustion oxidative system and carry out completely burned oxidation, then will fire from high temperature It burns the high-temperature tail gas come out in oxidative system and is sent to waste heat boiler progress waste heat recycling, the superheated steam of generation is as chemical heat The heat source of cleaning of evaporator and sludge dryer;
(7) tail gas cooling dust removal process: the medium temperature tail gas come out from waste heat boiler is sent into chilling tower, be made by chilling tower Exhaust temperature is down to 200 DEG C hereinafter, again through cooling dedusting and spray lye to remove sour gas, tail gas leads to after processing is up to standard Smoke stack emission is crossed into atmosphere.
In step (6), the high-temp combustion oxidative system is burnt using natural gas open fire, and operating temperature is 850~1100 Within the scope of DEG C, the residence time 1.5~2 seconds, to ensure organic principle thoroughly innoxious elimination, while the generation of dioxin is prevented.
In step (6), in high-temp combustion oxidative system come out about 1000 DEG C of high-temperature tail gas, be passed to waste heat boiler into 500 DEG C of medium temperature tail gas is reduced to after the recycling of row waste heat.
A kind of high concentration petroleum sludge green cleaning of the utility model-thermal desorption integrated technology processing system, mainly by oil Mud chemico-heating wash system and the innoxious thermal desorption system two parts of greasy filth are constituted, and the greasy filth chemico-heating wash system is by greasy filth homogeneous Slot 1, chemical heat cleaning of evaporator 2, efficient solid-liquid separator 3, oil water separator 4, sewerage integrated processing system 6, water tank 23 are through pipe Road is sequentially connected composition, the oil outlet of the top oil outlet of chemical heat cleaning of evaporator 2 and oil water separator 4 respectively by the road with recycling Oil tank 5 is connected, and the bottom of chemical heat cleaning of evaporator 2 is connected with efficient solid-liquid separator 3 by the road, efficient solid-liquid separator 3 Liquid outlet is connected with oil water separator 4;The innoxious thermal desorption system of greasy filth is by sludge dryer 10, condensing recovery system System 11, thermal desorption feed system 7, thermal desorption system 8, high-temp combustion oxidative system 9, waste heat boiler 13, tail gas cool down at dedusting Reason system and discharge system composition, the solid outlet of efficient solid-liquid separator 3 are connected with the feed inlet of sludge dryer 10 It connects, the steam (vapor) outlet of sludge dryer 10 is connected with condensate recovery system 11, and the fixed gas of condensate recovery system 11 exports warp Piping connection high-temp combustion oxidative system 9, the condensate outlet of condensate recovery system 11 connects oil water separator 4 by the road;It is dirty The solid outlet of mud dryer 10 is connected with thermal desorption feed system 7, thermal desorption feed system 7 and 8 phase of thermal desorption system Connection, the thermal desorption exhanst gas outlet 83 of thermal desorption system 8 are connected with the gas inlet 91 of high-temp combustion oxidative system 9, and heat is de- The discharge port of attached system 8 is connected with discharge system, and the offgas outlet 93 of high-temp combustion oxidative system 9 connects waste heat boiler 13, The steam (vapor) outlet of waste heat boiler 13 connects chemical heat cleaning of evaporator 2 and sludge dryer 10 by the road, the exhanst gas outlet of waste heat boiler with Tail gas cooling dust removing treatment system is connected, and tail gas is discharged into atmosphere after tail gas cooling dust removing treatment system processing.
Oil water separator 4 described in the utility model is by dashpot 41, reactive tank 42, oil storage tank 44 and 43 groups of effluent trough At dashpot 41, reactive tank 42 and effluent trough 43 are successively arranged setting, and oil storage tank 44 is located at the top of reactive tank 42, oil storage tank 44 are connected with recycling oil tank 5 by the road, and dashpot 41 is connected with the liquid outlet of efficient solid-liquid separator 3 by the road.
Thermal desorption greasy filth feed system 7 described in the utility model is by charging feed bin 71, belt conveyor 72 and metering feeding 73 composition of bucket, charging feed bin 71 are located at the entrance of belt conveyor 72, and metering feeding bucket 73 is located at going out for belt conveyor 72 Mouthful, the feeding inlet of the outlet connection thermal desorption system 8 of metering feeding bucket 73.
Thermal desorption system 8 described in the utility model includes being coated with the thermal desorption room of refractory material, the top peace of thermal desorption room Equipped with a series of thermal desorption burners 82, the lower section of thermal desorption burner 82 is equipped with stainless steel pedrail delivering strap 81, thermal desorption One end of room is equipped with feeding inlet, and the other end is equipped with discharging propeller 84, and thermal desorption exhanst gas outlet 83 is arranged in the top of thermal desorption room.
High-temp combustion oxidative system 9 described in the utility model includes high temperature combustors, and cigarette is arranged in one end of high temperature combustors Offgas outlet 93 is arranged in gas air inlet 91 and high-temperature burner 92, the other end, and offgas outlet 93 connects with waste heat boiler 13.
Tail gas cooling dust removing treatment system described in the utility model includes chilling tower 14, spray column 15, sedimentation tower 16, air inducing Machine 17 and chimney 18, spray column 15 connect with sedimentation tower 16, and chilling tower 14 is connected with spray column 15 by the road, sedimentation tower 16 Outlet connect chimney 18 by the road, air-introduced machine 17 is installed on the pipeline.
Discharge system described in the utility model is made of discharging hopper 19, double-shaft spiral unloader 20 and discharging feed bin 21, Discharging hopper 19 is located at the entrance of double-shaft spiral unloader 20, and discharging feed bin 21 is located at the outlet of double-shaft spiral unloader 20, double The outer layer of axis screw discharging machine 20 wraps up in one layer of cooling water layer, spray equipment is equipped at the top of the feed bin 21 that discharges, to reduce in feed bin The temperature and fugitive dust of dregs.
Compared with prior art, the utility model has the advantage that
(1) cleaning agent that the utility model uses is environmentally protective, and cleaning effect is significant, and grease consolidates three-phase layering after cleaning Efficiency is fast, and oil recovery rate is high.
(2) thermal desorption system of the utility model is transmitted using corrosion-and high-temp-resistant stainless steel crawler belt, direct flaming mode Greasy filth is heated, desorption is high-efficient, and processing capacity is big, and High Operating Temperature and residence time may be implemented.
(3) the utility model whole system is maintained under micro-vacuum state, can ensure that pollutant and dust under normal circumstances It is not excessive, prevent secondary pollution.
(4) the high temperature combustors length long enough used, residence time long enough, the air excess of supplement, ignition temperature It is sufficiently high, realize that 3T is burned, it is ensured that organic gas completely burned can effectively prevent dioxin to generate.
(5) waste heat of whole system is recycled, energy saving, reduces energy consumption cost.
(6) using chemico-heating wash technology and thermal desorption technology conjunctive use, petroleum substance and heat etc. can be achieved at the same time The multi-efficiencies such as the recycling of resource, oily sludge minimizing, innoxious.
Detailed description of the invention
Fig. 1 is the utility model high concentration petroleum sludge green cleaning-thermal desorption integrated technology processing method technique stream Cheng Tu.
Fig. 2 is that the utility model high concentration petroleum sludge green cleaning-thermal desorption integrated technology processing system structure is shown It is intended to.
In figure: greasy filth homogeneous slot 1, chemical heat cleaning of evaporator 2, efficient solid-liquid separator 3, oil water separator 4, sewage dashpot 41, reactive tank 42, oil storage tank 44, effluent trough 43, recycling oil tank 5, sewage integral type processing system 6, thermal desorption feed system 7, Charging feed bin 71, belt conveyor 72, metering feeding bucket 73, thermal desorption system 8, stainless steel crawler belt 81, thermal desorption burner 82, Thermal desorption exhanst gas outlet 83, discharging propeller 84, high-temp combustion oxidative system 9, gas inlet 91, high-temperature burner 92, high temperature Offgas outlet 93, sludge dryer 10, condensate recovery system 11, condenser pump 12, waste heat boiler 13, chilling tower 14, spray column 15, Sedimentation tower 16, air-introduced machine 17, chimney 18, discharge hopper 19, double-shaft spiral conveyer 20, and discharge feed bin 21, medicine system 22, storage Water pot 23, the first slush pump 24, the second slush pump 25, sewage pump 26, grid 27.
Specific embodiment
The technical solution of the utility model is further described with reference to the accompanying drawing.
As shown in Figure 1, the utility model high concentration petroleum sludge green cleaning-thermal desorption integrated technology processing method, packet Include following processing step:
(1) homogeneous removal of impurities pretreatment: greasy filth is subjected to quenched, dispersion and is pre-processed, greasy filth dispersion can be added during quenched Agent adjusts the dispersibility of greasy filth, make greasy filth starch in colour bar cloth woven bag fragment, appliances for labor protection, weeds, brick tile fragment, iron wire Equidimension >=10 millimeter rubbish incidental is intercepted by grid, and the sundries that periodic cleaning grid intercepts.
(2) chemico-heating wash is handled: treated the greasy filth of cleaning through homogeneous be sent into have hot water (60~80 DEG C) and cleaning In the chemical heat cleaning of evaporator of agent (such as lye, surfactant), chemical heat cleaning of evaporator is equipped with the dosing system for adding cleaning agent System is sufficiently stirred environmentally protective cleaning agent and hot water and greasy filth pressure by the agitating paddle in tank, makes crude oil from greasy filth It detaches, scrapes out at the top of the oily chemically hot wash tank detached, be stored in recycling oil tank, consolidating after chemico-heating wash Mutually chemically the tank bottom discharge of hot wash tank is sent into efficient solid-liquid separator.
(3) it separation of solid and liquid and water-oil separating: is separated by solid-liquid separation by efficient solid-liquid separator, contains the greasy filth isolated Oil cut rate is down to 3%~6%, and moisture content is 60%~70%, and it is temporary that the greasy filth after separation is delivered to greasy filth using small-size dump truck Area to be deposited to keep in or be sent directly into sludge dryer, the sewage that efficient solid-liquid separator is isolated is sent into oil water separator, The oil isolated by oil water separator is sent into recycling oil tank, the sewage that oil water separator is isolated is sent into sewage one Changing processing system, (structure of the equipment can be used disclosed in China Patent No. ZL201220225085.X that " heavy metal wastewater thereby is complete Processing equipment ", can also be using other equipment for realizing sewage treatments) in handled, will treated that water is stored in water storage In tank, it is back in chemical heat cleaning of evaporator.
(4) greasy filth desiccation and condensing recovery processing: it is de- can not to be directly entered heat for dewatered moisture percentage in sewage sludge 60% or so Attached system, thus the greasy filth that need to be will be fed into sludge dryer be dried to moisture content 20% hereinafter, sludge dryer heat source master The steam that drying process generates is sent into condensate recovery system and is condensed from the heat of electricity and waste heat boiler recycling, Condensate liquid is sent into oil water separator after condensing and carries out water-oil separating by oil and water, and the oil of recycling is outer after collecting to be transported at treating stations Reason, isolated water enter in sewerage integrated processing system, utilize again for greasy filth hot wash tank, uncondensable lightweight group Point (i.e. on-condensible gas) is delivered to high-temp combustion oxidative system and carries out completely burned oxidation, it is ensured that flue gas is fully purified place Reason.
(5) processing of greasy filth thermal desorption and high-temp combustion oxidation processes: by sludge dryer, treated that oily sludge passes through Feed system is sent into thermal desorption system, and the continuous feed of greasy filth makes feed inlet form one " soil plug ", can reduce de- into heat The air capacity of attached system, and thermal desorption system is effectively obstructed with atmosphere, it is ensured that thermal desorption room is in the state of tiny structure.Greasy filth By stainless steel crawler-tread in thermal desorption room, the flow direction of greasy filth is contrary with flow of flue gas, in the process of transmission In, the heating to greasy filth, whole process strict control air are realized by a series of thermal desorption burners at the top of thermal desorption system Inlet, it is ensured that cracking is desorbed in greasy filth in the state of anoxic.According to the type of greasy filth and the difference of moisture content, thermal desorption The temperature of room can be set between 300 to 750 DEG C, is desorbed and is come out completely with the various hydrocarbon-fractions ensured in greasy filth.Thermal desorption The thermal desorption flue gas that system comes out enters in high-temp combustion oxidative system, and high-temp combustion oxidative system is fired using natural gas open fire It burns, operating temperature is within the scope of 850~1100 DEG C, and the residence time 1.5~2 seconds, to ensure that petroleum hydrocarbon from fixed gas etc. has The thoroughly innoxious elimination of machine ingredient, while preventing the generation of dioxin.
(6) heat exchange process: condensing recovery system in the flue gas and step (4) that thermal desorption system in step (5) is generated The uncondensable light components that system generates are delivered to high-temp combustion oxidative system and carry out completely burned oxidation, then will fire from high temperature It burns the about 1000 DEG C of high-temperature tail gas come out in oxidative system and is sent to waste heat boiler progress waste heat recycling, after waste heat boiler recycles It is reduced to 500 DEG C of medium temperature tail gas, while using the superheated steam of generation as the heat source of chemical heat cleaning of evaporator and sludge dryer.
(7) tail gas cooling dust removal process: the medium temperature tail gas come out from waste heat boiler is sent into chilling tower, be made by chilling tower Exhaust temperature is down to 200 DEG C hereinafter, the generation again of dioxin is avoided, then again through cooling dedusting and spray in 1s from 500 DEG C Leaching lye is to remove sour gas, and tail gas is after processing is up to standard through smoke stack emission into atmosphere.
It is as shown in Figure 2 to implement the processing system structure that the above method uses:
The utility model processing system includes greasy filth chemico-heating wash system and the innoxious thermal desorption system two parts of greasy filth.
The greasy filth chemico-heating wash system is by greasy filth homogeneous slot 1, chemical heat cleaning of evaporator 2, efficient solid-liquid separator 3, grease Separator 4, sewerage integrated processing system 6, water tank 23 are sequentially connected composition by the road, set lattice in the greasy filth homogeneous slot 1 Grid 27,1 discharge port of greasy filth homogeneous slot are connected by the first sludge pump 24 with the import of chemical heat cleaning of evaporator 2, and chemical heat cleaning of evaporator 2 is matched It is cased with the medicine system 22 for adding cleaning agent, is equipped with stirring slurry in chemical heat cleaning of evaporator 2, the top of chemical heat cleaning of evaporator 2 is fuel-displaced Mouth is connected with recycling oil tank 5 by the road, and the bottom discharge port of chemical heat cleaning of evaporator 2 passes through the second sludge pump 25 and high efficiency solid-liquid The import of separator 3 is connected, and the solid outlet of efficient solid-liquid separator 3 is connected with the feed inlet of greasy filth dryer 10, The liquid outlet of efficient solid-liquid separator 3 then passes through sewage pump 26 and is connected with the import of oil water separator 4, oil water separator 4 Water outlet be connected with the water inlet of sewerage integrated processing system 6, the water outlet and water storage of sewerage integrated processing system 6 The import of tank 23 is connected, and the water of water tank 23 is finally returned to reuse in chemical heat cleaning of evaporator 2.
The innoxious thermal desorption system of greasy filth is by sludge dryer 10, condensate recovery system 11, thermal desorption feed system 7, thermal desorption system 8, high-temp combustion oxidative system 9, waste heat boiler 13, tail gas cooling dust removing treatment system and discharge system group At the steam (vapor) outlet of sludge dryer 10 is connected with condensate recovery system 11, the non-condensable gas export of condensate recovery system 11 High-temp combustion oxidative system 9 is connected by the road, and to be recycled, the condensate outlet of condensate recovery system 11 connects by the road Oil water separator 4 is connect, condenser pump 12 is installed on the pipeline;The solid outlet and thermal desorption of the sludge dryer 10 are fed System 7 is connected, and thermal desorption feed system 7 includes charging feed bin 71, belt conveyor 72 and metering feeding bucket 73, feeds feed bin 71 are located at the arrival end of belt conveyor 72, and metering feeding bucket 73 is located at the outlet end of belt conveyor 72, feed feed bin 71 and The solid outlet of sludge dryer 10 is connected, and the metering feeding bucket 73 of thermal desorption feed system 7 is mounted on thermal desorption system 8 Feeding inlet, thermal desorption system 8 includes being coated with the thermal desorption room of refractory material, be equipped at the top of thermal desorption room uniformly it is straggly The lower section of a series of thermal desorption burners 82 of center line two sides, thermal desorption burner 82 is equipped with stainless steel pedrail delivering strap 81, one end of thermal desorption room is equipped with feeding inlet, and the other end is equipped with discharging propeller 84, and thermal desorption is arranged in the top of thermal desorption room Exhanst gas outlet 83, discharging propeller 84 are connected with discharge system, and the discharge system is by discharging hopper 19, double-shaft spiral discharging Machine 20 and discharging feed bin 21 form, and discharging hopper 19 is located at the entrance of double-shaft spiral unloader 20, and discharging feed bin 21 is located at twin shaft The outlet of screw discharging machine 20, the outer layer of double-shaft spiral unloader 20 wrap up in one layer of cooling water layer, are equipped at the top of the feed bin 21 that discharges Spray equipment, to reduce the temperature and fugitive dust of dregs in feed bin;The cigarette of thermal desorption exhanst gas outlet 83 and high-temp combustion oxidative system 9 Gas import 91 is connected, and high-temp combustion oxidative system 9 includes high temperature combustors, and high temperature combustors are horizontally mounted and all indoors It encloses and is coated with refractory material, tail gas is arranged in one end setting gas inlet 91 and high-temperature burner 92 of high temperature combustors, the other end Outlet 93, offgas outlet 93 connects with waste heat boiler 13, and the thermal source outlet of waste heat boiler 13 connects 2 He of chemical heat cleaning of evaporator by the road The exhanst gas outlet of sludge dryer 10, waste heat boiler is connected with tail gas cooling dust removing treatment system, and tail gas is removed through tail gas cooling It is discharged into atmosphere after the processing of dirt processing system.
Oil water separator 4 described in the utility model is by dashpot 41, reactive tank 42, oil storage tank 44 and 43 groups of effluent trough At dashpot 41, reactive tank 42 and effluent trough 43 are successively arranged setting, and oil storage tank 44 is located at the top of reactive tank 42, oil storage tank 44 are connected with recycling oil tank 5 by the road, and dashpot 41 is connected with the liquid outlet of efficient solid-liquid separator 3 by the road.
Tail gas cooling dust removing treatment system described in the utility model includes chilling tower 14, spray column 15, sedimentation tower 16, air inducing Machine 17 and chimney 18, spray column 15 are sequentially penetrated through with sedimentation tower 16, and chilling tower 14 is connected with spray column 15 by the road, sedimentation tower 16 outlet connects chimney 18 by the road, and air-introduced machine 17 is equipped on the pipeline, and tail gas is finally handled up to standard in air-introduced machine 17 Effect is lower to be discharged into atmosphere by chimney 18.
The metering feeding bucket 73 of thermal desorption greasy filth feed system 7 described in the utility model uses double-shaft spiral feeding manner, Native plug is formed by bottom variable diameter design, outside air is reduced and enters in thermal desorption system 8.
The course of work of the utility model processing system is as follows:
Sludge is sent into greasy filth homogeneous slot 1, the water outlet of greasy filth homogeneous slot 1 is equipped with grid 27, can add during quenched Enter sludge dispersant to adjust the dispersibility of greasy filth, makes colour bar cloth woven bag fragment, appliances for labor protection, weeds, brick in greasy filth slurry Head tile fragment, iron wire equidimension >=10 millimeter rubbish incidental are intercepted by grid 21, and the sundries that periodic cleaning grid 27 intercepts.
Greasy filth after will be quenched is pumped into chemico-heating wash tank 2 by the effect of the first slush pump 24, and chemical heat cleaning of evaporator 2 is equipped with Environmentally protective cleaning agent and hot water and greasy filth pressure is sufficiently stirred in medicine system 22, the agitating paddle in tank, makes crude oil from oil It is detached in mud, the top of the oily chemically hot wash tank 2 detached scrapes out, is stored in recycling oil tank 5;Chemico-heating wash Then chemically the tank bottom of hot wash tank 2 enters efficient solid-liquid separator 3 under the action of passing through the second slush pump 25 to solid phase afterwards In.
The sludge oil content isolated by efficient solid-liquid separator 3 is down to 3%~6%, and moisture content 60%~70% is left It is temporary or be sent directly into sludge dryer 10 to be delivered to greasy filth working area using small-size dump truck by the right side for greasy filth after separation, The sewage isolated then passes through sewage pump 26 and enters in oil water separator 4, and sewage is introduced into dashpot 41, then is flowed into reaction In slot 42 carry out aeration make water-oil separating, the oil stream isolated enters in oil storage tank 44, and the water isolated is entered from effluent trough 43 It is handled in sewerage integrated processing system 6, water after processing is stored in water tank 23, and is back to chemical heat cleaning of evaporator In 2.
Dewatered moisture percentage in sewage sludge is too high, can not be directly entered thermal desorption system, therefore need to be placed in sludge dryer 10 Drying and other treatment makes its moisture content be down to 20% or less.The desiccation heat source of sludge dryer 10 is mainly derived from commercial power and remaining The heat that heat boiler 13 recycles, the steam that drying process generates enter condensate recovery system 11 and are condensed, and You Heshui is condensed Get off, condensate liquid enters oil water separator 4, and the outer treating stations that are transported to are handled after the oil of recycling is entered recycling oil tank 5, through grease point Enter in sewerage integrated processing system 6 from the water that device 4 is isolated, is utilized again for chemical heat cleaning of evaporator 2, uncondensable lightweight The high-temperature burner 92 that component (i.e. on-condensible gas) is delivered to high-temp combustion oxidative system 9 carries out completely burned oxidation, it is ensured that cigarette Gas is fully purified processing.
Oily sludge after 10 drying and other treatment of sludge dryer is sent into thermal desorption system 8 by feeding conveyor 7 to push up The metering feeding bucket 73 in portion, greasy filth form one " soil plug " in metering feeding bucket 73, can reduce into thermal desorption system 8 Air capacity, and the thermal desorption room of thermal desorption system 8 is effectively obstructed with atmosphere, it is ensured that thermal desorption room is in the shape of tiny structure State.Greasy filth is transmitted in thermal desorption room by stainless steel crawler belt 81, and the flow direction of greasy filth is contrary with flow of flue gas, is passing During sending, a series of thermal desorption burners 82 in thermal desorption ceiling portion realize the heating to greasy filth, and whole process is strictly controlled The inlet of air processed, it is ensured that cracking is desorbed in greasy filth in the state of anoxic.By what is come out from high-temp combustion oxidative system 9 1000 DEG C of high-temperature tail gas are sent to waste heat boiler 13 and carry out waste heat recycling, and the superheated steam of generation is for chemical cleaning tank 2 and sludge Dryer 10 uses.The exhaust temperature recycled by waste heat boiler 13 is down to 500 DEG C hereinafter, both sufficiently recycle heat, Not only heat is sufficiently recycled, but also dioxin is avoided to regenerate.The medium temperature tail gas come out from waste heat boiler is sent into chilling tower 14 make exhaust temperature be down to 200 DEG C hereinafter, avoiding the generation again of dioxin in 1s from 500 DEG C, and the tail gas after cooling enters Spray column 15 and sedimentation tower 16 cool down dedusting with spray lye removing sour gas again, and tail gas passes through chimney after processing is up to standard It is discharged into atmosphere.
Through treated the dregs of thermal desorption system 8 under the action of discharging propeller 84, fall on discharging hopper 19, then by Double-shaft spiral unloader 20 is transported to discharging feed bin 21 and stores, and double-shaft spiral unloader outer layer is wrapped up in one layer of cooling water layer, prevented The excessively high influence equipment service life of drop temperature, discharging feed bin 21 use closed setting, are equipped with spray equipment at the top of warehouse, The temperature and fugitive dust for reducing dregs in feed bin, prevent fugitive dust from escaping.
It is the application example of the utility model below:
Example one:
It is process object, moisture content 50%, oil content 18%, average particle size with the tank bottom oil sludge in certain oil field Less than 5mm, enter chemico-heating wash tank after conditioned and clean, crude oil recovery rate is 66.7% after cleaning, through efficient solid-liquid separator Moisture percentage in sewage sludge is 65% after processing, and sludge oil content is down to 6%;Moisture percentage in sewage sludge is down to 20%, after drying after drying Sludge is sent by feed system to metering feeding bucket, and is fallen on the stainless steel crawler belt in thermal desorption system, and control greasy filth is de- in heat The temperature range of alcove is 500~700 DEG C, residence time 20min, and the temperature of high temperature combustors is controlled at 1100 DEG C, is stopped 2s.Dregs oil content after thermal desorption is 220mg/kg, and removal rate is up to 99.69%, and thermal desorption tail gas is through high-temp combustion smoke-purifying Dioxins concentration is less than 0.1TEQng/Nm in gas3, each index reaches " atmosphere pollution synthesis after exhaust treatment system is handled Discharge standard " discharge standard.
Example two:
It is process object, moisture content 40%, oil content 15%, average particle size with the ground sludge in certain oil field Less than 10mm, enter chemico-heating wash tank after conditioned and clean, crude oil recovery rate is 80% after cleaning, at efficient solid-liquid separator Moisture percentage in sewage sludge 60%~65% after reason, sludge oil content are down to 3%;Moisture percentage in sewage sludge is down to 19%, after drying after drying Sludge sent by feed system to metering feeding bucket, and fall on the stainless steel crawler belt in thermal desorption system, control greasy filth in heat The temperature range of desorption chamber is 300~500 DEG C, residence time 18min, and the temperature of high temperature combustors is controlled at 850 DEG C, is stopped 1.5s.Dregs oil content after thermal desorption is 200mg/kg, and up to 99.62%, thermal desorption tail gas purifies removal rate through high-temp combustion Dioxins concentration is less than 0.1TEQng/Nm in flue gas3, each index reaches that " atmosphere pollution is comprehensive after exhaust treatment system is handled Close discharge standard " discharge standard.
Example three:
It is process object with the oil sludge and sand in certain oil field, moisture content 55%, oil content 25%, average particle size is small In 10mm, enter chemico-heating wash tank after conditioned and clean, crude oil recovery rate is 80% after cleaning, at efficient solid-liquid separator Moisture percentage in sewage sludge 60%~65% after reason, sludge oil content are down to 5%;Moisture percentage in sewage sludge is down to 18%, after drying after drying Sludge sent by feed system to metering feeding bucket, and fall on the stainless steel crawler belt in thermal desorption system, control greasy filth in heat The temperature range of desorption chamber is 400~550 DEG C, residence time 20min, and the temperature of high temperature combustors is controlled at 950 DEG C, is stopped 1.8s.Dregs oil content after thermal desorption is 180mg/kg, and up to 99.71%, thermal desorption tail gas purifies removal rate through high-temp combustion Dioxins concentration is less than 0.1TEQng/Nm in flue gas3, each index reaches that " atmosphere pollution is comprehensive after exhaust treatment system is handled Close discharge standard " discharge standard.

Claims (7)

1. a kind of high concentration petroleum sludge green cleaning-thermal desorption integrated technology processing system, which is characterized in that it is mainly by oil Mud chemico-heating wash system and the innoxious thermal desorption system two parts of greasy filth are constituted, and the greasy filth chemico-heating wash system is by greasy filth homogeneous Slot (1), chemical heat cleaning of evaporator (2), efficient solid-liquid separator (3), oil water separator (4), sewerage integrated processing system (6), storage Water pot (23) is sequentially connected composition, the top oil outlet of chemical heat cleaning of evaporator (2) and the oil outlet of oil water separator (4) by the road Respectively by the road with recycling oil tank (5) be connected, the bottom of chemical heat cleaning of evaporator (2) by the road with efficient solid-liquid separator (3) phase Connection, the liquid outlet of efficient solid-liquid separator (3) are connected with oil water separator (4);The innoxious thermal desorption system of greasy filth System is by sludge dryer (10), condensate recovery system (11), thermal desorption feed system (7), thermal desorption system (8), high-temp combustion Oxidative system (9), waste heat boiler (13), tail gas cooling dust removing treatment system and discharge system composition, efficient solid-liquid separator (3) Solid outlet be connected with the feed inlet of sludge dryer (10), the steam (vapor) outlet and condensing recovery of sludge dryer (10) System (11) is connected, and the fixed gas outlet of condensate recovery system (11) connects high-temp combustion oxidative system (9) by the road, condensation The condensate outlet of recovery system (11) connects oil water separator (4) by the road;The solid outlet of sludge dryer (10) with Thermal desorption feed system (7) is connected, and thermal desorption feed system (7) is connected with thermal desorption system (8), thermal desorption system (8) Thermal desorption exhanst gas outlet (83) be connected with the gas inlet (91) of high-temp combustion oxidative system (9), thermal desorption system (8) Discharge port is connected with discharge system, and the offgas outlet (93) of high-temp combustion oxidative system (9) connects waste heat boiler (13), waste heat The steam (vapor) outlet of boiler (13) connects chemical heat cleaning of evaporator (2) and sludge dryer (10), the exhanst gas outlet of waste heat boiler by the road It is connected with tail gas cooling dust removing treatment system, tail gas is discharged into atmosphere after tail gas cooling dust removing treatment system processing.
2. high concentration petroleum sludge green cleaning-thermal desorption integrated technology processing system, feature exist according to claim 1 In the oil water separator (4) is made of dashpot (41), reactive tank (42), oil storage tank (44) and effluent trough (43), buffering Slot (41), reactive tank (42) and effluent trough (43) are successively arranged setting, and oil storage tank (44) is located at the top of reactive tank (42), oil storage Slot (44) is connected with recycling oil tank (5) by the road, dashpot (41) liquid outlet with efficient solid-liquid separator (3) by the road It is connected.
3. high concentration petroleum sludge green cleaning according to claim 1 or claim 2-thermal desorption integrated technology processing system, special Sign is that the thermal desorption feed system (7) is by charging feed bin (71), belt conveyor (72) and metering feeding bucket (73) group At charging feed bin (71) is located at the entrance of belt conveyor (72), and metering feeding bucket (73) is located at going out for belt conveyor (72) Mouthful, the feeding inlet of outlet connection thermal desorption system (8) of metering feeding bucket (73).
4. high concentration petroleum sludge green cleaning according to claim 1 or claim 2-thermal desorption integrated technology processing system, special Sign is that the thermal desorption system (8) includes the thermal desorption room for being coated with refractory material, is equipped at the top of thermal desorption room a series of The lower section of thermal desorption burner (82), thermal desorption burner (82) is equipped with stainless steel pedrail delivering strap (81), thermal desorption room One end is equipped with feeding inlet, and the other end is equipped with discharging propeller (84), and thermal desorption exhanst gas outlet (83) are arranged in the top of thermal desorption room.
5. high concentration petroleum sludge green cleaning according to claim 1 or claim 2-thermal desorption integrated technology processing system, special Sign is that the high-temp combustion oxidative system (9) includes high temperature combustors, and gas inlet (91) are arranged in one end of high temperature combustors And offgas outlet (93) are arranged in high-temperature burner (92), the other end, offgas outlet (93) connects with waste heat boiler (13).
6. high concentration petroleum sludge green cleaning according to claim 1 or claim 2-thermal desorption integrated technology processing system, special Sign is that the tail gas cooling dust removing treatment system includes chilling tower (14), spray column (15), sedimentation tower (16), air-introduced machine (17) it connects with chimney (18), spray column (15) with sedimentation tower (16), chilling tower (14) is connected with spray column (15) by the road It connects, the outlet of sedimentation tower (16) connects chimney (18) by the road, and air-introduced machine (17) are equipped on the pipeline.
7. high concentration petroleum sludge green cleaning according to claim 1 or claim 2-thermal desorption integrated technology processing system, special Sign is that the discharge system is made of discharging hopper (19), double-shaft spiral unloader (20) and discharging feed bin (21), discharging material Bucket (19) is located at the entrance of double-shaft spiral unloader (20), and discharging feed bin (21) is located at the outlet of double-shaft spiral unloader (20), The outer layer of double-shaft spiral unloader (20) wraps up in one layer of cooling water layer, is equipped with spray equipment at the top of discharging feed bin (21), to reduce The temperature and fugitive dust of dregs in feed bin.
CN201821412087.3U 2018-08-30 2018-08-30 High concentration petroleum sludge green cleaning-thermal desorption integrated technology processing system Active CN209481431U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111594095A (en) * 2020-05-06 2020-08-28 甘肃中科聚合石油科技有限公司 Oily sludge profile control device for water shutoff
CN113371960A (en) * 2021-07-14 2021-09-10 北京恩思沃生物科技有限公司 Thermal desorption treatment technology for oily sludge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111594095A (en) * 2020-05-06 2020-08-28 甘肃中科聚合石油科技有限公司 Oily sludge profile control device for water shutoff
CN113371960A (en) * 2021-07-14 2021-09-10 北京恩思沃生物科技有限公司 Thermal desorption treatment technology for oily sludge

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