CN102503055B - Treatment method and treatment apparatus of oily sludge - Google Patents
Treatment method and treatment apparatus of oily sludge Download PDFInfo
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- CN102503055B CN102503055B CN201110346055.4A CN201110346055A CN102503055B CN 102503055 B CN102503055 B CN 102503055B CN 201110346055 A CN201110346055 A CN 201110346055A CN 102503055 B CN102503055 B CN 102503055B
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Abstract
The invention provides a treatment method of oily sludge, which comprises the steps of: introducing overheated vapor into a high temperature treatment groove to roast the oily sludge so as to evaporate the liquid containing oil and water in the oily sludge to gas; separating the solid granules from the oily sludge and contained in the gas in a gas-solid separator, and conveying the solid granules to a drying machine to be dried and burnt so as to be discharged; condensing the gas separated from the gas-solid separator to liquid state oil and water, separating the liquid state oil and water in an oil-water separator to be respectively recycled, wherein the oily sludge is introduced into the high temperature treatment groove in a pumping manner, the overheated vapor is introduced into the high temperature treatment groove by supersonic jet flow and is vertically collided with the oily sludge. The invention further provides a treatment apparatus of oily sludge for executing the method; the treatment method and treatment apparatus provided by the invention have the advantages of guaranteeing high crude oil recovery, and small water content and oil content of finally generated dry residues.
Description
Technical field
The present invention relates to a kind for the treatment of process and treatment facility of oily sludge.
Background technology
The Sewage treatment systems of oil field and refinery and crude production storing and transporting system can produce a large amount of oily sludges.The annual oily sludge total amount producing of China reaches more than 500 ten thousand tons at present.Along with most of oil fields enter middle and later periods mining phase, extraction Water in oil rate is more and more higher, and oily sludge amount also can continue to increase.Oily sludge composition is extremely complicated, is mainly made up of mixing such as oil in water emulsion, water, suspended solids, contains heavy metal and other detrimental impurity; Refinery mud also contains the toxic substances such as a large amount of benzene homologues, phenols, pyrene, anthracene.
Oily sludge directly outer row can take a large amount of soils, and toxic substance meeting polluted water, soil and air that it contains, worsen ecotope; Be directly used in re-injection and at Sewage treatment systems circulation time, can cause injection water quality to decline and the operational conditions of Sewage treatment systems worsens, to producing, cause can not anticipated losses, and while bulk petroleum resource is wasted.Oily sludge is put into the oily waste class in " national Hazardous wastes catalogue ", and " national promotion law on cleaner production " and " solid waste environmental pollution prevention and control method " also requirement must carry out harmless treatment to oily sludge.Therefore, no matter be from environment protection, safeguard normal production or the angle from the recovery energy, all must carry out innoxious, recycling treatment to oily sludge.People have carried out a large amount of research to the processing of oily sludge, but there is no so far a kind of ripe effectively treatment process.The processing of current each Sludge in Oilfields adopts the treatment process such as air storage and landfill mostly, has directly polluted soil and groundwater resource, has also caused the waste of resource simultaneously.
For realizing thorough processing and the utilization of resources of oily sludge, carry out large quantity research both at home and abroad and obtained certain progress.The main treatment technology of oily sludge has: oily sludge is modified-and mechanical separation technology, biologic treating technique, oily sludge curing technology, incineration treatment technology, hot washing method, solvent extraction etc.Owing to having many problems at aspects such as treatment process, processing cost, environment protection, still do not have at present a kind of reasonably, the cost treatment facility that oily sludge is purified low, technology maturation is widely applied.
Greasy filth refer in field produces activity, be mainly derived from oil production, workover treatment, crude oil transmission, refining and oily water treatment process by crude oil and other Organic pollutants mud, sand, the oil-containing solids mixture of water, in greasy filth, general oil length is at 10-50%, and water ratio is at 40-90%.National each elephant has a large amount of wellsite operation ground sludges to produce in exploration exploitation production process now, and in the refining of oil and collect in defeated process, also can produce large amount of sewage and process greasy filth in greasy filth, the service line of removing at the bottom of the oily sludge that produces, tank etc.
In oily sludge, contain the cacodorous toxic substances such as a large amount of benzene homologues, phenols, anthracene, pyrene, because oily sludge is bulky, if do not processed directly discharge, not only take a large amount of arable lands, cause the waste to nervous land resources, also will pollute output zone and Soil Surrounding, water body, air, and produce with foul gas.Contain the hazardous and noxious substances of the difficult degradations such as heavy metal, salt and polychlorobiphenyl, Dioxins such as a large amount of pathogenic bacterias, parasite (ovum), copper, zinc, chromium, mercury due to mud, thereby surrounding enviroment are caused to larger impact, the one, the oil gas volatilization in oily sludge, surrounding soil, water body, air are all polluted, produce with foul gas, make the phenomenon that in output zone, Air quality exists total hydrocarbon concentration to exceed standard; The 2nd, the even underground water of oily sludge polluted surface water that is scattered and stacks, makes COD in water, BOD and petroleum-type severe overweight; The 3rd, oily sludge contains a large amount of crude oil, causes Hydrocarbon in Soil to exceed standard, and soil compaction is destroyed the vegetation in region, and grass roots is degenerated, and ecotope is affected.Because hydrocarbons contained in greasy filth is larger to surrounding enviroment harm, be put into the Hazardous wastes in " national Hazardous Waste List ", thereby the processing of oily sludge is a great problem of puzzlement oil field Sustainable development always, and the discharge of greasy filth has become the important factor of harm local environment quality.
Will leave in the greasy filth stored of oil sediment through screening, by step several times, the impurity in greasy filth is exorcised.Oil sediment after screening is transported to oil sediment feed reservoir, by feed screw to knife mill (with steam heater), raw material greasy filth is pulverized fully and (passed through crushing process, greasy filth particle is crushed to below 0.1cm, make greasy filth in next step sepn process greasy filth particle agent contacts fully thoroughly with oil sludge elution, fully separate with mud to reach oil).Raw material after crushed by feed screw deliver to whizzer carry out centrifugation (through centrifugation mainly make greasy filth homogenize and oil-containing minimize, the greasy filth that makes to be about to enter sepn process by this process oil-containing uniformity of trying one's best, and its oleaginousness is touched the bottom, agent contacts more full and uniform with oil sludge elution in sepn process to make greasy filth, also can reduce dosage) simultaneously, material after centrifugation is delivered to greasy filth stirrer (with steam heater) by feed screw, add water and the separation chemistry medicament of appropriate amount in stirrer, to be uniformly mixed fully to form mixing oil mud simultaneously.
The greasy filth slurry preparing enters apparatus for separating oil from mud by feed screw, adds the oil sludge elution agent of non-quantitative in separating machine according to the situation of raw material, through being fully uniformly mixed, and under the effect of the microbubble importing, oil is thoroughly separated with mud.Simultaneously in bottom by water pump to pumping into clear water in separating machine with by high the liquid level holder of oil gas bubble, oil content floats to upper strata with the form of oil gas bubble, steep scaler the oily bubble trap of oil gas bubble importing by oil gas.
The oil gas bubble of collecting from apparatus for separating oil from mud still contains moisture and silt particle, still needs to carry out further oily water separation.Oil gas bubble is delivered in profit cleaner by concentrated pipeline and clear water centrifugal pump, and oil gas steeps under the effect of medicine and mechanical stirring power, through the precipitation of a certain amount of time, oil is fully separated, to reach the object of self-cleaning oil with water and silt particle.
Greasy filth in apparatus for separating oil from mud after abundant separation, oil thoroughly separates with silt particle with the form of oil gas bubble, valve, pipeline, transferpump and type petroleum crude recovery device by water-and-oil separator middle and upper part by Crude Oil Transportation to storage tank or tank wagon, thereby reach the object that reclaims crude oil.Muddy water in apparatus for separating oil from mud and the water in the middle of water-and-oil separator are delivered to sewage purifier by common pipeline, valve and clear water centrifugal pump simultaneously, the process that water after precipitation can stir for greasy filth again.The larger silt particle of simultaneously separating in apparatus for separating oil from mud is emitted by the valve of separating machine bottom.
Greasy filth is through the processing of above process, and crude oil can reach energy recovery recycling; The silt particle of separating reaches the mud discharging standard of regulation in promulgated by the ministries or commissions of the Central Government of national environmental protection " pollutent control criterion in agricultural mud "; Water in greasy filth sepn process circulates, and the water emitting has also reached sewage drainage standard.
At least there is following defect in prior art: 1, dosage is large; 2,, for fresh greasy filth ideal treatment effect, aging greasy filth treatment effect is undesirable; 3, can not process for alkaline greasy filth.
Summary of the invention
For the problem existing in correlation technique, the object of the present invention is to provide a kind for the treatment of process and treatment facility of oily sludge, make crude oil recovery rate high, and last dry slag water ratio and the oleaginousness producing is little.
For achieving the above object, the invention provides a kind for the treatment of process of oily sludge, comprising: superheated vapour is imported in high-temperature processing tank and cures oily sludge, make oily sludge comprise that oil and water are evaporated into gas at interior liquid; The solid particulate from oily sludge comprising in gas is separated in gas-solid separator, then sent in drying machine and be dried and rear discharge of burning; The gas of separating from gas-solid separator condensation condenser is generated to liquid You Heshui, the oil of this liquid state and water is separated rear recovery respectively in water-and-oil separator, wherein, oily sludge imports in high-temperature processing tank with pumping mode, and superheated vapour imports in high-temperature processing tank and bump against vertical with oily sludge with supersonic jet.
Preferably, the treatment process of oily sludge also comprises that superheated vapour produces step: the saturation steam below 0.3Mpa is sent in the heat transfer tube of steam-generating installation, utilize the saturation steam in the fuel machine heating heat transfer tube of heat transfer tube below, reach 500 ℃ of above and pressure and remain on the superheated vapour of 0.2Mpa until saturation steam becomes temperature.
Preferably, superheated vapour is passed in drying machine solid particulate is dried, dried solid particulate and the warm air burning passing in drying machine are generated to dry slag and flue gas, wherein flue gas is discharged after dedusting, and dry slag imports in spiral conveyer.
Preferably, the described water of separating from water-and-oil separator is carried out in heat exchanger cooling, then utilize cooled water to carry out cooling to water-and-oil separator.
Preferably, the described solid particulate of separating from gas-solid separator was collected in recovery bin until be just admitted in drying machine while reaching predetermined material level before sending into drying machine.
Preferably, when from recovery bin to drying machine conveying solid substance particle, in drying machine, solid particulate is stirred simultaneously.
On the other hand, the present invention also provides a kind of disposal of oily sludge equipment for the aforementioned either method of the present invention, comprise: there is the high-temperature processing tank of the cavity reacting with oily sludge generating gasification for superheated vapour, on cavity, offer and receive the first entrance of superheated vapour, the second entrance and the venting port of reception oily sludge; With the gas-solid separator that the venting port of high-temperature processing tank is communicated with, there is the air outlet, top of the rear gas of the separation of discharging, the bottom slag notch that discharge separates rear solid; Be communicated with the bottom slag notch of gas-solid separator, for the drying machine of solid drying after separating and burning, have for the steam passing in order to the superheated vapour of drying solid and pass into mouthful and for the hot air inlet passing into the warm air of dried solid combustion; And condenser, its entrance is communicated with the air outlet, top of gas-solid separator, and its outlet is communicated with water-and-oil separator, and wherein, the medullary ray of the first entrance of high-temperature processing tank, perpendicular to the medullary ray of the second entrance of high-temperature processing tank.
Preferably, disposal of oily sludge equipment also comprises the steam-generating installation that produces superheated vapour, there is casing, be contained in heat transfer tube in casing, be installed on casing in order to heat the fuel machine of heat transfer tube, wherein, a port of heat transfer tube forms the entrance passing into for saturation steam, another port forms the outlet of discharging superheated vapour, and the outlet of heat transfer tube is communicated with the first entrance of high-temperature processing tank.
Preferably, disposal of oily sludge equipment also comprises: flue gas discharger that be communicated with drying machine, in order to the flue gas producing after warm air in drying machine and solid combustion is discharged; Spiral conveyer that be communicated with drying machine, in order to the dry slag producing after warm air in drying machine and solid combustion is discharged; And be connected to drying machine hot air inlet, for blasting the fan of warm air.
Preferably, disposal of oily sludge equipment also comprises: in order to the heat exchanger of the cooling recycle-water from water-and-oil separator, wherein, heat exchanger has the water inlet of reception recycle-water and the recycle-water after heat exchanger cooling is passed into the water outlet in water-and-oil separator.
Preferably, the inwall of the cavity of high-temperature processing tank is provided with ceramic lining plate, and the first access point of high-temperature processing tank is provided with superheated vapour is sprayed into the vapor-nozzle in cavity.
Preferably, in drying machine, be provided with the drying tray in order to carrying isolated solid from gas-solid separator.
Preferably, gas-solid separator comprises: the cylindrical upper shell, the back taper lower shell that are communicated with successively, wherein, exit at lower shell is connected with recovery bin, the bottom discharging mouth of recovery bin forms described bottom slag notch, and level detector is also installed in recovery bin and stirs the whipping appts of content in recovery bin in response to level detector signal, at bottom discharging mouth, place is provided with bleeder valve.
Useful technique effect of the present invention is: make crude oil recovery rate high, and last dry slag water ratio and the oleaginousness producing is little.Further, method and apparatus of the present invention can reach following cleanup standard: in solid residue after treatment (corresponding to the aforesaid dry slag by discharging in drying machine), oleaginousness is less than 0.3%, meet the regulation about mineral oil content in " pollutent control criterion in the agricultural mud " GB4284-84 of country, in solid residue, water ratio is lower than 10%.
Accompanying drawing explanation
Fig. 1 is the schema of the treatment process of oily sludge of the present invention;
Fig. 2 is the structural representation of steam-generating installation in disposal of oily sludge equipment of the present invention;
Fig. 3 is the structural representation of high-temperature processing tank in disposal of oily sludge equipment of the present invention;
Fig. 4 is the local structure schematic diagram of gas-solid separator in disposal of oily sludge equipment of the present invention.
Embodiment
Referring to accompanying drawing, the treatment process of oily sludge of the present invention and the disposal of oily sludge equipment in order to the method are described below.
Describe the treatment process of oily sludge of the present invention referring to Fig. 1, it comprises the steps: that (1) imports superheated vapour in high-temperature processing tank 2 and cures oily sludge, makes oily sludge comprise that oil and water are evaporated into gas at interior liquid; (2) solid particulate from oily sludge comprising in described gas is separated in gas-solid separator 3, then the solid particulate of separating is sent in drying machine 7 and be dried and rear discharge of burning; (3) gas of separating from gas-solid separator 3 condensation condenser 4 is generated to liquid You Heshui, the oil of this liquid state and water is separated rear recovery respectively in water-and-oil separator 5.In step (1): oily sludge imports in high-temperature processing tank 2 with pumping mode, superheated vapour import in high-temperature processing tank 2 with supersonic jet and with vertical collision of oily sludge importing in high-temperature processing tank 2, wherein this vertical collision makes oily sludge under the high temperature heat of superheated vapour and the effect of high speed kinetic energy, the liquid such as the water in oily sludge and oil (oil) class evaporate from oily sludge inside rapidly, and be evaporated into gas, realize liquid-solid separation; Wherein said supersonic speed is 1-2 Mach left and right (mach one i.e. 1 times of velocity of sound) preferably.
Continue referring to Fig. 1 and in conjunction with Fig. 2, method of the present invention also comprises that following superheated vapour produces step: the saturation steam below 0.3Mpa is sent in the heat transfer tube 1204 of steam-generating installation 12, utilize the fuel machine 1203 of heat transfer tube 1204 belows to heat the saturation steam in heat transfer tube 1204, reach more than 500 ℃ and pressure remains on the superheated vapour of 0.2Mpa until saturation steam becomes temperature after heat absorption.This superheated vapour just can be sent in high-temperature processing tank 2 and cure oily sludge.
In order to realize at drying machine 7, solid particulate (from gas-solid separator 3) to be dried and to be burnt, the superheated vapour that aforesaid superheated vapour is produced to step generation passes in drying machine 7, this superheated vapour is dried the solid particulate entering in drying machine 7, also in drying machine 7, pass into warm air in addition, to make warm air and the burning of dried solid particulate generate dry slag and flue gas.The dry slag generating enters in spiral conveyer 8, and spiral conveyer 8 can be by pack after dry slag output, and dry slag is field, stacking, greening ridging also; The flue gas generating is discharged after dust removal process, for example, flue gas is carried out discharging after dust removal process through washing tower 11, and the flue gas of discharge reaches the requirement of discharge.
In more detail, that water ratio after centrifuge dehydration is less than under 80% the situation of oily sludge sending into oily sludge in high-temperature processing tank 2, also contain the oil content of 1% left and right from gas-solid separator 3 solid particulate (dry slag) out, be admitted to after drying machine 7, in the situation of carrying out fully contacting with the warm air of sending in drying machine after the superheated vapour baking of 500 ℃ of high temperature, oil content in dry slag starts to occur combustion phenomena, in drying machine, ceaselessly stir dry slag and make dry slag in drying machine, stop time enough, the oil content in dry slag is fully burnt, and can reach water ratio and be less than 10%, oil-containing is lower than 0.3% requirement.With regard to drying machine, drying machine can adopt to be had carrying content the drying tray to this content and stirs the agitator on this drying tray.Continue referring to Fig. 1, it can also be seen that, the solid particulate of separating from gas-solid separator 3 was collected in recovery bin before sending into drying machine 7, until the solid particulate of collecting in recovery bin is just sent in drying machine 7 while reaching predetermined material level.In order to prevent that solid particulate (dry slag) is at recovery bin bridging, in recovery bin, increase a set of whipping appts, when from recovery bin to drying machine conveying solid substance particle, whipping appts stirs solid particulate in drying machine 7, thereby can effectively prevent that arch formation from occurring.
Continue referring to Fig. 1, also comprise in the method for the invention the step of utilizing the water cooling water-and-oil separator after reclaiming, particularly, by the water of separating from water-and-oil separator 5 pass in heat exchanger 6, carry out cooling, and then utilize cooled water to carry out cooling to water-and-oil separator 5, wherein heat exchanger 6 is cooling by circulating refrigerant, and this circulating refrigerant can be water coolant, and this water coolant and aforesaid recycle-water the produced water coolant that is cooled is different.In other words, the oil-containing high-temperature gas of separating from separator enters in water-and-oil separator after condenser condenses, further cooling through water-and-oil separator, oil gas in high-temperature gas is condensed, through oily water separation, oil is reclaimed and sends by oil pump, and noncondensable gas enters atmosphere after further vent gas treatment, after high temperature sewage (recycle-water) heat exchanger 6 heat releases in oil-water separation tank, can realize closed cycle.Be also to be understood that in the present invention, gasification, condensation, the removal process of oil (crude oil) do not change its physical property.
To sum up, utilize the above-mentioned process for treating oil-containing sludge of the present invention, can make crude oil recovery rate reach more than 99%, be less than 10% finally by the dry slag water ratio of being discharged by drying machine, oleaginousness is less than 0.3%.
On the other hand, the present invention also provides a kind of device for the aforementioned process for treating oil-containing sludge of the present invention, referring to Fig. 1-4, disposal of oily sludge equipment of the present invention is described, it comprises: high-temperature processing tank 2, there is the cavity reacting with oily sludge generating gasification for superheated vapour, on this cavity, offer and receive the first entrance 26 of superheated vapour, the second entrance 25 and the venting port 28 of reception oily sludge, the wherein medullary ray of the first entrance 26, perpendicular to the medullary ray of the second entrance 25 of high-temperature processing tank; Gas-solid separator 3, is communicated with the venting port 28 of high-temperature processing tank 2, and this gas-solid separator 3 has the bottom slag notch 34 in order to solid after the air outlet, top 32 of gas after discharge separation, discharge separation; In order to by separate after solid drying and the drying machine 7 of burning, this drying machine 7 is communicated with the bottom slag notch 34 of gas-solid separator, and there is the hot air inlet 73 that the steam passing into for superheated vapour passes into mouthfuls 71, passes into for warm air, wherein passing into superheated vapour is for the solid in dry drying machine, and makes dried solid mix to burn with warm air; Condenser 4, the entrance of condenser 4 is communicated with the air outlet, top 32 of gas-solid separator, and the outlet of condenser 4 is communicated with water-and-oil separator 5.Wherein in drying machine 7, be provided with the drying tray in order to carrying isolated solid from gas-solid separator 3.
Further, in conjunction with Fig. 1 and Fig. 2, disposal of oily sludge equipment of the present invention also comprises: produce the steam-generating installation 12 of superheated vapour, can produce temperature more than 500 ℃ and pressure remains on the superheated vapour of 0.2Mpa.As shown in Figure 2, steam-generating installation 12 has: casing, be contained in heat transfer tube 1204 in casing, be installed on casing in order to heat the fuel machine 1203 of heat transfer tube 1204, wherein, a port one 202 of heat transfer tube forms the entrance passing into for saturation steam, another port 1201 forms discharges the outlet of superheated vapour and is communicated with the first entrance 26 of high-temperature processing tank 2, to provide superheated vapour to high-temperature processing tank 2.The combustion medium of combustion engine 1203 can be Sweet natural gas, but is not limited to this.
Further, disposal of oily sludge equipment of the present invention also comprises:, flue gas discharger in order to the flue gas that in drying machine 7 warm air and solid combustion after produce discharged that be communicated with drying machine 7; , spiral conveyer 8 in order to the dry slag that in drying machine 7 warm air and solid combustion after produce discharged that be communicated with drying machine 7; Be connected to drying machine 7 hot air inlet 71, for blasting and the fan 10 of described warm air.Shown in Fig. 1, described flue gas discharger comprises washing tower 11, exhaust blower 9 and is positioned at the water sealed tank being communicated with washing tower 11 of washing tower 11 belows.
Further, as can be seen from Figure 1, disposal of oily sludge equipment of the present invention also comprises: in order to the heat exchanger 6 of the cooling recycle-water from water-and-oil separator 5, heat exchanger 6 has water inlet 61 to receive recycle-water, interchanger 6 also has water outlet 62, is wherein passed in water-and-oil separator 5 through water outlet 62 through the cooled recycle-water of heat exchanger 6.Wherein, interchanger 6 is communicated with formation circulating water cooling system with water-and-oil separator 5.
Referring to Fig. 3, on the inwall of the cavity of high-temperature processing tank 2 of the present invention, be provided with ceramic lining plate 21, the first entrance 26 places at high-temperature processing tank 2 are provided with vapor-nozzle 24, from the superheated vapour of steam-generating installation 12 in the time flowing through vapor-nozzle 24, first compress afterwards and discharge, be similar to the Laval nozzle technology of aircraft engine, superheated vapour is accelerated to 1-2 Mach left and right after vapor-nozzle 24.In Fig. 3, also show in addition access hole 27 and the slag notch 22 of high-temperature processing tank 2.Owing at the interior high-temperature steam of high-temperature processing tank 2, the particle in oily sludge being washed away with high speed and colliding housing, the wear resisting property of common iron and resistance to elevated temperatures all can not be used under this operating mode, therefore at the ceramic lining plate of the inner lining high-temperature wearable of high-temperature processing tank 2, effectively overcome high temperature and washed away and collide.In Fig. 3, also show porthole 23.
Referring in conjunction with Fig. 1 and Fig. 4, in the present invention, gas-solid separator 3 comprises: the cylindrical upper shell 31, the back taper lower shell 33 that are communicated with successively, wherein, exit at lower shell 33 is connected with recovery bin, the bottom discharging mouth of recovery bin forms described bottom slag notch 34, and level detector is also installed in recovery bin and stirs the whipping appts of content in recovery bin in response to level detector signal, being provided with rotary discharge valve at bottom discharging mouth place, rotary discharge valve adopts frequency conversion stepless control.In more detail, in Fig. 4, also show inlet pipe 39, the middle riser 35 of gas-solid separator 3, high-temperature processing tank expellant gas (containing the solid particulate from oily sludge) through inlet pipe 39 along in the upper shell that tangentially enters separator 31 of upper shell 31, be subject to the constraint of wall and for the helical movement downwards, under the effect of centrifugal inertial force, particle thrown to wall and and pneumatic separation, drop down onto the dry slag recovery bin under slower conical tube along wall again, purified gas is from bottom to top for the helical movement near central shaft, is finally discharged by top vent 32.In conjunction with Fig. 1, disposal of oily sludge equipment of the present invention has two above-mentioned gas-solid separators 3, thereby has formed cyclone separator.
In Fig. 1, also show raw material transfer container 1, its discharge port is connected in the second entrance 25 of high-temperature processing tank 2, and to provide the oily sludge after centrifuge dehydration to high-temperature processing tank 2, the water ratio of the oily sludge that for example provided is less than 80%.
In addition, from another angle, disposal of oily sludge equipment of the present invention is described, also can think, disposal of oily sludge equipment of the present invention comprises: sludge drying treatment system, dry slag cyclone separation system, oil gas reclaim separation system, the remaining oil content firing system of dry slag.Wherein, sludge drying treatment system comprises aforesaid steam-generating installation 12, high-temperature processing tank 2 and auxiliary facility thereof.Dry slag cyclone separation system comprises aforesaid gas-solid separator 3, recovery bin and auxiliary facility thereof.Oil gas reclaims separation system including aforesaid condenser 4, water-and-oil separator 5 and comprises circulating water cooling system and the auxiliary facility thereof interchanger 6, and the remaining oil content firing system of dry slag comprises drying machine 7, exhaust blower 9, fan 10.
By this, the invention provides that a kind of processing cost is low, wide accommodation, resource utilization, innoxious disposal of oily sludge equipment.Apply the cleanup standard that this equipment can reach: in solid residue after treatment (corresponding to the aforesaid dry slag by discharging in drying machine), oleaginousness is less than 0.3%, meet the regulation about mineral oil content in " pollutent control criterion in the agricultural mud " GB4284-84 of country, in solid residue, water ratio is lower than 10%.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a treatment process for oily sludge, is characterized in that, comprising:
Superheated vapour is imported in high-temperature processing tank (2) and cures oily sludge, make oily sludge comprise that oil and water are evaporated into gas at interior liquid;
The solid particulate from oily sludge comprising in gas is separated in gas-solid separator (3), then sent in drying machine (7) and be dried and rear discharge of burning;
The gas of separating from gas-solid separator (3) condensation condenser (4) is generated to liquid You Heshui, and the oil of this liquid state and water is separated rear recovery respectively in water-and-oil separator (5),
Wherein, described oily sludge imports in described high-temperature processing tank (2) with pumping mode, and described superheated vapour imports in described high-temperature processing tank (2) and bump against vertical with described oily sludge with supersonic jet;
Wherein, described superheated vapour is passed in described drying machine (7) described solid particulate is dried, dried solid particulate and the warm air burning passing in described drying machine (7) are generated to dry slag and flue gas, wherein said flue gas is discharged after dedusting, and described dry slag imports in spiral conveyer (8).
2. the treatment process of oily sludge according to claim 1, is characterized in that,
Also comprise that superheated vapour produces step: the saturation steam below 0.3Mpa is sent in the heat transfer tube of steam-generating installation (12), utilize the fuel machine of heat transfer tube below to heat the saturation steam in described heat transfer tube, reach 500 ℃ of above and pressure and remain on the described superheated vapour of 0.2Mpa until described saturation steam becomes temperature.
3. the treatment process of oily sludge according to claim 1, is characterized in that,
The described water of separating from water-and-oil separator is carried out in heat exchanger (6) cooling, then utilize cooled water to carry out cooling to water-and-oil separator (5).
4. the treatment process of oily sludge according to claim 1, is characterized in that,
The described solid particulate of separating from gas-solid separator (3), drying machine (7) is collected in recovery bin before until be just admitted in described drying machine (7) while reaching predetermined material level sending into.
5. the treatment process of oily sludge according to claim 4, is characterized in that,
In the time carrying described solid particulate from described recovery bin to described drying machine, in described drying machine (7), described solid particulate is stirred simultaneously.
6. for a disposal of oily sludge equipment for method described in aforementioned arbitrary claim, it is characterized in that, comprising:
There is the high-temperature processing tank (2) of the cavity reacting with oily sludge generating gasification for superheated vapour, on described cavity, offer and receive first entrance (26) of superheated vapour, the second entrance (25) and the venting port (28) of reception oily sludge;
With the gas-solid separator (3) that the venting port (28) of described high-temperature processing tank is communicated with, there is the air outlet, top (32) of the rear gas of the separation of discharging, the bottom slag notch (34) that discharge separates rear solid;
Be communicated with the bottom slag notch (34) of described gas-solid separator, for the drying machine (7) of solid drying after described separation and burning, have for the steam passing in order to the superheated vapour of dry described solid and pass into mouthful (71) and for the hot air inlet (73) passing into the warm air of dried solid combustion; And
Condenser (4), its entrance is communicated with the air outlet, top (32) of described gas-solid separator, and its outlet is communicated with water-and-oil separator (5),
Wherein, the medullary ray of first entrance (26) of described high-temperature processing tank, perpendicular to the medullary ray of second entrance (25) of described high-temperature processing tank,
Disposal of oily sludge equipment, also comprises: flue gas discharger that be communicated with described drying machine (7), in order to the flue gas producing after warm air and solid combustion in described drying machine is discharged; Spiral conveyer (8) that be communicated with described drying machine (7), in order to the dry slag producing after warm air and solid combustion in described drying machine is discharged; And be connected to described drying machine hot air inlet (73), for blasting the fan (10) of described warm air,
Flue gas discharger comprises washing tower, exhaust blower and is positioned at the water sealed tank being communicated with washing tower of washing tower below.
7. disposal of oily sludge equipment according to claim 6, is characterized in that,
Also comprise the steam-generating installation (12) that produces superheated vapour, there is casing, be contained in heat transfer tube (1204) in described casing, be installed on described casing in order to heat the fuel machine (1203) of described heat transfer tube (1204),
Wherein, a port (1202) of described heat transfer tube forms the entrance passing into for saturation steam, another port (1201) forms the outlet of discharging described superheated vapour, and the described outlet of described heat transfer tube (1204) is communicated with first entrance (26) of described high-temperature processing tank.
8. disposal of oily sludge equipment according to claim 6, is characterized in that,
Also comprise the heat exchanger (6) in order to the cooling recycle-water from described water-and-oil separator (5), wherein, described heat exchanger (6) has the water inlet (61) of the described recycle-water of reception and will pass into the water outlet (62) in described water-and-oil separator (5) through the cooled recycle-water of described heat exchanger (6).
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