CN105819644A - Harmless treatment system and method for oily sludge - Google Patents
Harmless treatment system and method for oily sludge Download PDFInfo
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- CN105819644A CN105819644A CN201610354044.3A CN201610354044A CN105819644A CN 105819644 A CN105819644 A CN 105819644A CN 201610354044 A CN201610354044 A CN 201610354044A CN 105819644 A CN105819644 A CN 105819644A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/16—Treatment of sludge; Devices therefor by de-watering, drying or thickening using drying or composting beds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/10—Burned or pyrolised refuse
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/10—Drying by heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/12—Sludge, slurries or mixtures of liquids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a harmless treatment system and method for oily sludge, and relates to the technical field of sludge treatment .The harmless treatment system for the oily sludge is composed of a mechanical dewatering device, a pretreating device, a gas treating unit, a water treating unit, a drying device, a granulating device, a combustion furnace and a brick making device .The harmless treatment method for the oily sludge is wide in application range, low energy consumption and cost and free of secondary pollution, and wastewater, waste residues and waste gas which are generated in the oily sludge treating process are thoroughly removed through the processes of pretreating, drying, combusting, waste residue treating, waste gas treating and wastewater treating; meanwhile, heat, the waste residues and purified water which are generated in the technological process are recycled, and therefore the oily sludge treating cost is greatly reduced; in addition, emission of the treated wastewater, waste residue and waste gas meets the national environmental protection requirements, and then harmless treatment for the oily sludge is achieved.
Description
Technical field
The present invention relates to technical field of sludge treatment, particularly relate to a kind of oily sludge innocuity disposal system and method.
Background technology
Oily sludge be oil exploitation, transport, refine and during oily waste water treatment produce oily solid sludge, containing poisonous and harmful substances such as sulfide, benzene, phenols, anthracene, pyrenes in the oily sludge produced in oil field development, it is that oil field produces one of primary pollution source, lists " National Hazard refuse register " in.Along with continually developing of each elephant, oily sludge generation amount is consequently increased.Process oily sludge for many years to have been used up antiseepage pond and store, stack, occupy a large amount of land resource, and at present oily sludge also with annual 3% speed increment.Carrying out landfill disposal after the mainly solidification of traditional process for treating oil-containing sludge, not only cause the oil wasting of resources in oily sludge, the most serious pollutes environment.
Existing mainly have sieveization sulfuration-quenched-centrifuging, thermal desorption method, pyrolysismethod, burning method, biological treatment, chemical extraction method, high temperature cabonization method etc. containing method for sludge treatment, raw material after wherein sieveization sulfuration-quenched-centrifuging process, oil content, still greater than 2%, also needs advanced treating；Thermal desorption method is only applicable to the mud that oil content is the highest；Pyrolysismethod requires that to reaction condition height, equipment are complicated, investment is big, energy consumption is high, and misoperation is easily generated air secondary pollution；Burning method needs to mix auxiliary fuel, and energy consumption is high, equipment investment is big, and the dust of generation, SO2 etc. can cause secondary pollution；Biological treatment long processing period, bad adaptability, floor space are big, climate impact is big；；Chemical extraction method extractant is expensive, equipment is complicated, processing cost is high；High temperature cabonization method requires that to reaction condition height, equipment are complicated, investment is big, energy consumption is high.
Summary of the invention
The present invention is for above-mentioned the deficiencies in the prior art, it is provided that a kind of oily sludge innocuity disposal system and method.
nullA kind of oily sludge innocuity disposal system of the present invention，It is by mechanical dehydration device、Pretreatment unit、Air processing unit、Unit for treating water、Drying device、Prilling granulator、Combustion furnace and brick making device are constituted，The outfan pipeline of mechanical dehydration device connects feeding hopper，Feeding hopper is connected with pretreatment unit through helical feed pipeline，The outfan of pretreatment unit is connected with feed bin I，Feed bin I is connected with the charging aperture of drying device through helical feed pipeline，The air outlet of drying device connects gas-solid separating device，The exhanst gas outlet of gas-solid separating device connects air processing unit，The water side of air processing unit is connected with unit for treating water，The sludge outlet of unit for treating water is connected with mechanical dehydration device、Oil outlet end connects pipeline road、Water side connects water pipeline，The solids exit end of gas-solid separating device is all connected with feed bin II with the discharging opening of drying device，The discharge end of feed bin II connects Granulation Equipments and feed bin IV，Granulation Equipments is connected with the feed end of combustion furnace through feed bin III，The slag notch of combustion furnace connects feed bin IV，Feed bin IV connects brick making device and pretreatment unit，The exhanst gas outlet of combustion furnace connects drying device.
As a further improvement on the present invention, described unit for treating water is to be made up of oily-water seperating equipment, settler, profit pond, cesspool and water purifying tank, the input of oily-water seperating equipment is connected with profit pond, its outfan is connected with cesspool and pipeline road respectively, profit pond is connected with mechanical dehydration device pipeline, cesspool is connected with settler, settler is connected with water purifying tank, profit pond, cesspool and water purifying tank are all connected with air processing unit pipeline, and the pure water inlet end of water purifying tank connects water pipeline.
As a further improvement on the present invention, described air processing unit is to be made up of gas wash tower, desulfurizing tower and adsorbent equipment, gas wash tower is connected with desulfurizing tower pipeline and pipeline is provided with air-introduced machine, desulfurizing tower is connected with adsorbent equipment pipeline, the water inlet end of gas wash tower and desulfurizing tower is all connected with unit for treating water pipeline, the liquid outlet of gas wash tower is connected with profit pond pipeline, and the liquid outlet of desulfurizing tower is connected with cesspool pipeline.
As a further improvement on the present invention, horizontal direction shaft it is provided with in described feeding hopper.
A kind of oily sludge method for innocent treatment, concrete technology flow process is as follows:
A, pretreatment: be dehydrated by oily sludge, make the water content of raw material less than 80%, then mixed with adjuvant by dehydration oily sludge and stir, and prepares pretreated feedstock, and wherein dehydration oily sludge is 1:0.1～3 with the ratio of adjuvant；
B, it is dried: the pretreated feedstock 600 a step prepared～700 DEG C carry out heated and stirred and are dried, and make raw aqueous rate reach 20%～30%, prepares and be dried raw material and also produce flue gas；
C, burning: the dry raw material that b step prepares is carried out pelletize, and pelletizing finished product granularity is 2～15mm, then supplying gas firing 3～5min by granulated material higher than 1100 DEG C, and air demand is 30000～40000m3/h, prepares slag and also produces high-temperature flue gas；
D, Solid state fermentation: the slag that step c prepares a part of mixing with dehydration oily sludge in the ratio of a step carries out pretreatment of raw material, and remaining slag is pressed into burn-free cement brick；
E, exhaust-gas treatment: the flue gas that b step produces carries out gas solid separation, the prepared dry raw material of solid and b step of generation mixes and carries out pelletize, after the gas of generation carries out dust removal process, carry out desulfurization and adsorption-edulcoration again, the most purified gas passes through smoke stack emission, its particle content≤80mg/m3 of purified gas, content of sulfur dioxide≤80mg/m3, amount of nitrogen oxides≤300mg/m3, flue gas blackness≤1 grade；
F, waste water process: the waste liquid obtained after dust removal process in step e is carried out solid-liquid separation, isolated mud delivers to be circulated process in a step, isolated oil enters oil pipeline, isolated sewage carries out precipitating purified treatment with desulfurization waste liquor, and the water after purification can be recycled by dedusting and desulfurized step.
As a further improvement on the present invention, the adjuvant described in a step is: start as biomass smalls first, follow-up for waste residue or dry sewage sludge powder.
As a further improvement on the present invention, described biomass smalls is sawdust or grass meal.
As a further improvement on the present invention, during in step e, desulfurization processes, the flow of air inducing and blast are more than the flow of oxygen supply in step c and blast.
A kind of oily sludge innocuity disposal system of the present invention and method, it is applied widely, energy consumption is low, low cost, non-secondary pollution, pass through pretreatment, it is dried, burning, Solid state fermentation, exhaust-gas treatment and waste water treatment process, the waste water that will produce during disposal of oily sludge, waste residue, waste gas thoroughly eliminates, the heat that simultaneously will produce in technical process, waste residue and purification water are circulated utilization, greatly reduce disposal of oily sludge cost, and the waste water after processing, waste residue, the discharge of waste gas, all meet national requirements for environmental protection, achieve the harmless treatment of oily sludge.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, a kind of oily sludge innocuity disposal system of the present invention, it is to be made up of mechanical dehydration device 1, pretreatment unit 2, air processing unit 3, unit for treating water 4, drying device 5, prilling granulator 6, combustion furnace 7 and brick making device 8, it is characterized in that the outfan pipeline of mechanical dehydration device 1 connects feeding hopper 9, feeding hopper 9 is connected with pretreatment unit 2 through helical feed pipeline, horizontal direction shaft it is provided with in feeding hopper 9, prevent oily sludge and wall large area adhesion, it is impossible to enter conveying worm import；The outfan of pretreatment unit 2 is connected with feed bin I 10, feed bin I 10 is connected through the charging aperture of helical feed pipeline with drying device 5, the air outlet of drying device 5 connects gas-solid separating device 11, the exhanst gas outlet of gas-solid separating device 11 connects air processing unit 3, the solids exit end of gas-solid separating device 11 is all connected with feed bin II 12 with the discharging opening of drying device 5, the discharge end of feed bin II 12 connects Granulation Equipments 6 and feed bin IV 14, Granulation Equipments 6 is connected through the feed end of feed bin III 13 with combustion furnace 7, the slag notch of combustion furnace 7 connects feed bin IV 14, feed bin IV 14 connects brick making device 8 and pretreatment unit 2, the exhanst gas outlet of combustion furnace 7 connects drying device；Air processing unit 3 is to be made up of gas wash tower 15, desulfurizing tower 16 and adsorbent equipment 17, gas wash tower 15 is connected with desulfurizing tower 16 pipeline and pipeline is provided with air-introduced machine 23, desulfurizing tower 16 is connected with adsorbent equipment 17 pipeline, the water inlet end of gas wash tower 15 and desulfurizing tower 16 is all connected with unit for treating water 4 pipeline, the liquid outlet of gas wash tower 15 is connected with profit pond 20 pipeline, and the liquid outlet of desulfurizing tower 16 is connected with cesspool 21 pipeline；Unit for treating water 4 is to be made up of oily-water seperating equipment 18, settler 19, profit pond 20, cesspool 21 and water purifying tank 22, the input of oily-water seperating equipment 18 is connected with profit pond 20, its outfan is connected with cesspool 21 and pipeline road 25 respectively, profit pond 20 is connected with mechanical dehydration device 1 pipeline, cesspool 21 is connected with settler 19, settler 19 is connected with water purifying tank 22, profit pond 20, cesspool 21 and water purifying tank 22 are all connected 5 with air processing unit 3 pipeline, and the pure water inlet end of water purifying tank 22 connects water pipeline 26.
Embodiment 2
Utilizing a kind of oily sludge method for innocent treatment of said apparatus, concrete technology flow process is as follows:
A, pretreatment: oily sludge is sent in mechanical dehydration device 1 and be dehydrated, the water content making raw material reaches 80%, it is then sent to feeding hopper 9, it is delivered to pretreatment unit 2 again by conveying worm, in pretreatment unit 2, add adjuvant simultaneously (start as the biomass smalls such as sawdust or grass meal first, follow-up for waste residue or dry sewage sludge powder), and stir, prepare pretreated feedstock, wherein dehydration oily sludge is 1:0.1 with the ratio of adjuvant, this step by raw material with loose porous, small particle, mixing broken up by the adjuvant of low specific heat, increase mud granule specific area, reduce material viscosity, strengthen material fluidity, it is beneficial to subsequent heat operation；
B, it is dried: the pretreated feedstock that a step prepares is delivered to drying device 5, and 600 DEG C carry out heated and stirred and are dried, and make raw aqueous rate reach 20%, prepares and be dried raw material and also produce flue gas；
C, burning: the dry feedstock transportation that b step prepares is carried out pelletize to prilling granulator 6, pelletizing finished product granularity is 2mm, then the raw material of granulating is sent into combustion furnace, by aerator for gas firing, air demand 30000m3/h, and higher than 1100 DEG C of burning 3min, prepare slag and produce high-temperature flue gas；
D, Solid state fermentation: the slag that step c prepares is by the ratio feeding pretreatment unit 2 of a step, and remaining slag is delivered to brick making device 8, is mixed in proportion cement, early strength agent, Calx etc. and is pressed into burn-free cement brick；
E, exhaust-gas treatment: flue gas b step produced sends into gas-solid separating device 11, the solid of generation mixes gas feeding gas wash tower 15 dedusting carrying out pelletize, generation with the dry raw material of b step, again by desulfurizing tower 16 desulfurization, air-introduced machine 23 is delivered to adsorbent equipment 17 adsorption-edulcoration the most again, on-condensible gas in waste gas and odorous gas are adsorbed, the most purified gas passes through smoke stack emission, its particle content≤80mg/m3 of purified gas, content of sulfur dioxide≤80mg/m3, amount of nitrogen oxides≤300mg/m3, flue gas blackness≤1 grade；
F, waste water process: the waste liquid of gas wash tower in step e 15 is delivered to profit pond 20, in profit pond 20, the mud feeding mechanical dehydration device 1 of precipitation proceeds to process, oil-water mixture in profit pond 20 sends into oily-water seperating equipment 18, the waste liquid that isolated oil enters oil pipeline 25, isolated sewage and desulfurizing tower 16 all sends into cesspool 21, delivering to settler 19 again and carry out clean water treatment, the water after purification can be continued cycling through utilization by gas wash tower 15 and desulfurizing tower 16.
Wherein, between gas wash tower 15 and desulfurizing tower 16, the flow of the air-introduced machine 23 on pipeline and blast give flow and the blast of combustion furnace 7 oxygen supply aerator 24 more than 14, become negative pressure state, accelerate the evaporation of moisture in making drying device 5.
Embodiment 3
Utilizing a kind of oily sludge method for innocent treatment of said apparatus, concrete technology flow process is as follows:
A, pretreatment: oily sludge is sent in mechanical dehydration device 1 and be dehydrated, the water content making raw material reaches 70%, it is then sent to feeding hopper 9, it is delivered to pretreatment unit 2 again by conveying worm, in pretreatment unit 2, add adjuvant simultaneously (start as the biomass smalls such as sawdust or grass meal first, follow-up for waste residue or dry sewage sludge powder), and stir, prepare pretreated feedstock, wherein dehydration oily sludge is 1:3 with the ratio of adjuvant, this step by raw material with loose porous, small particle, mixing broken up by the adjuvant of low specific heat, increase mud granule specific area, reduce material viscosity, strengthen material fluidity, it is beneficial to subsequent heat operation；
B, it is dried: the pretreated feedstock that a step prepares is delivered to drying device 5, and 700 DEG C carry out heated and stirred and are dried, and make raw aqueous rate reach 30%, prepares and be dried raw material and also produce flue gas；
C, burning: the dry feedstock transportation that b step prepares is carried out pelletize to prilling granulator 6, pelletizing finished product granularity is 2～15mm, then the raw material of granulating is sent into combustion furnace, by aerator for gas firing, air demand 40000m3/h, and higher than 1100 DEG C of burning 5min, prepare slag and produce high-temperature flue gas；
D, Solid state fermentation: the slag that step c prepares is by the ratio feeding pretreatment unit 2 of a step, and remaining slag is delivered to brick making device 8, is mixed in proportion cement, early strength agent, Calx etc. and is pressed into burn-free cement brick；
E, exhaust-gas treatment: flue gas b step produced sends into gas-solid separating device 11, the solid of generation mixes gas feeding gas wash tower 15 dedusting carrying out pelletize, generation with the dry raw material of b step, again by desulfurizing tower 16 desulfurization, air-introduced machine 23 is delivered to adsorbent equipment 17 adsorption-edulcoration the most again, on-condensible gas in waste gas and odorous gas are adsorbed, the most purified gas passes through smoke stack emission, its particle content≤80mg/m3 of purified gas, content of sulfur dioxide≤80mg/m3, amount of nitrogen oxides≤300mg/m3, flue gas blackness≤1 grade；
F, waste water process: the waste liquid of gas wash tower in step e 15 is delivered to profit pond 20, in profit pond 20, the mud feeding mechanical dehydration device 1 of precipitation proceeds to process, oil-water mixture in profit pond 20 sends into oily-water seperating equipment 18, the waste liquid that isolated oil enters oil pipeline 25, isolated sewage and desulfurizing tower 16 all sends into cesspool 21, delivering to settler 19 again and carry out clean water treatment, the water after purification can be continued cycling through utilization by gas wash tower 15 and desulfurizing tower 16.
Wherein, between gas wash tower 15 and desulfurizing tower 16, the flow of the air-introduced machine 23 on pipeline and blast give flow and the blast of combustion furnace 7 oxygen supply aerator 24 more than 14, become negative pressure state, accelerate the evaporation of moisture in making drying device 5.
Embodiment 4
Utilizing a kind of oily sludge method for innocent treatment of said apparatus, concrete technology flow process is as follows:
A, pretreatment: oily sludge is sent in mechanical dehydration device 1 and be dehydrated, the water content making raw material reaches 50%, it is then sent to feeding hopper 9, it is delivered to pretreatment unit 2 again by conveying worm, in pretreatment unit 2, add adjuvant simultaneously (start as the biomass smalls such as sawdust or grass meal first, follow-up for waste residue or dry sewage sludge powder), and stir, prepare pretreated feedstock, wherein dehydration oily sludge is 1:1 with the ratio of adjuvant, this step by raw material with loose porous, small particle, mixing broken up by the adjuvant of low specific heat, increase mud granule specific area, reduce material viscosity, strengthen material fluidity, it is beneficial to subsequent heat operation；
B, it is dried: the pretreated feedstock that a step prepares is delivered to drying device 5, and 650 DEG C carry out heated and stirred and are dried, and make raw aqueous rate reach 25%, prepares and be dried raw material and also produce flue gas；
C, burning: the dry feedstock transportation that b step prepares is carried out pelletize to prilling granulator 6, pelletizing finished product granularity is 8mm, then the raw material of granulating is sent into combustion furnace, by aerator for gas firing, air demand 35000m3/h, and higher than 1100 DEG C of burning 4min, prepare slag and produce high-temperature flue gas；
D, Solid state fermentation: the slag that step c prepares is by the ratio feeding pretreatment unit 2 of a step, and remaining slag is delivered to brick making device 8, is mixed in proportion cement, early strength agent, Calx etc. and is pressed into burn-free cement brick；
E, exhaust-gas treatment: flue gas b step produced sends into gas-solid separating device 11, the solid of generation mixes gas feeding gas wash tower 15 dedusting carrying out pelletize, generation with the dry raw material of b step, again by desulfurizing tower 16 desulfurization, air-introduced machine 23 is delivered to adsorbent equipment 17 adsorption-edulcoration the most again, on-condensible gas in waste gas and odorous gas are adsorbed, the most purified gas passes through smoke stack emission, its particle content≤80mg/m3 of purified gas, content of sulfur dioxide≤80mg/m3, amount of nitrogen oxides≤300mg/m3, flue gas blackness≤1 grade；
F, waste water process: the waste liquid of gas wash tower in step e 15 is delivered to profit pond 20, in profit pond 20, the mud feeding mechanical dehydration device 1 of precipitation proceeds to process, oil-water mixture in profit pond 20 sends into oily-water seperating equipment 18, the waste liquid that isolated oil enters oil pipeline 25, isolated sewage and desulfurizing tower 16 all sends into cesspool 21, delivering to settler 19 again and carry out clean water treatment, the water after purification can be continued cycling through utilization by gas wash tower 15 and desulfurizing tower 16.
Wherein, between gas wash tower 15 and desulfurizing tower 16, the flow of the air-introduced machine 23 on pipeline and blast give flow and the blast of combustion furnace 7 oxygen supply aerator 24 more than 14, become negative pressure state, accelerate the evaporation of moisture in making drying device 5.
Claims (8)
- null1. an oily sludge innocuity disposal system，It is by mechanical dehydration device (1)、Pretreatment unit (2)、Air processing unit (3)、Unit for treating water (4)、Drying device (5)、Prilling granulator (6)、Combustion furnace (7) and brick making device (8) are constituted，It is characterized in that the outfan pipeline of mechanical dehydration device (1) connects feeding hopper (9)，Feeding hopper (9) is connected with pretreatment unit (2) through helical feed pipeline，The outfan of pretreatment unit (2) is connected with feed bin I (10)，Feed bin I (10) is connected through the charging aperture of helical feed pipeline with drying device (5)，The air outlet of drying device (5) connects gas-solid separating device (11)，The exhanst gas outlet of gas-solid separating device (11) connects air processing unit (3)，The water side of air processing unit (3) is connected with unit for treating water (4)，The sludge outlet of unit for treating water (4) is connected with mechanical dehydration device (1)、Oil outlet end connects pipeline road (25)、Water side connects water pipeline (26)，The solids exit end of gas-solid separating device (11) is all connected with feed bin II (12) with the discharging opening of drying device (5)，The discharge end of feed bin II (12) connects Granulation Equipments (6) and feed bin IV (14)，Granulation Equipments (6) is connected through the feed end of feed bin III (13) with combustion furnace (7)，The slag notch of combustion furnace (7) connects feed bin IV (14)，Feed bin IV (14) connects brick making device (8) and pretreatment unit (2)，The exhanst gas outlet of combustion furnace (7) connects drying device (5).
- null2. a kind of oily sludge innocuity disposal system as claimed in claim 1，It is characterized in that unit for treating water (4) is by oily-water seperating equipment (18)、Settler (19)、Profit pond (20)、Cesspool (21) and water purifying tank (22) are constituted，The input of oily-water seperating equipment (18) is connected with profit pond (20)、Its outfan is connected with cesspool (21) and pipeline road (25) respectively，Profit pond (20) is connected with mechanical dehydration device (1) pipeline，Cesspool (21) is connected with settler (19)，Settler (19) is connected with water purifying tank (22)，Profit pond (20)、Cesspool (21) and water purifying tank (22) are all connected with air processing unit (3) pipeline，The pure water inlet end of water purifying tank (22) connects water pipeline (26).
- 3. a kind of oily sludge innocuity disposal system as claimed in claim 2, it is characterized in that air processing unit (3) is by gas wash tower (15), desulfurizing tower (16) and adsorbent equipment (17) are constituted, gas wash tower (15) is connected with desulfurizing tower (16) pipeline, and pipeline is provided with air-introduced machine (23), desulfurizing tower (16) is connected with adsorbent equipment (17) pipeline, the water inlet end of gas wash tower (15) and desulfurizing tower (16) is all connected with unit for treating water (4) pipeline, the liquid outlet of gas wash tower (15) is connected with profit pond (20) pipeline, the liquid outlet of desulfurizing tower (16) is connected with cesspool (21) pipeline.
- 4. a kind of oily sludge innocuity disposal system as claimed in claim 1, it is characterised in that feeding hopper is provided with horizontal direction shaft in (9).
- 5. an oily sludge method for innocent treatment, concrete technology flow process is as follows:A, pretreatment: be dehydrated by oily sludge, make the water content of raw material less than 80%, then mixed with adjuvant by dehydration oily sludge and stir, and prepares pretreated feedstock, and wherein dehydration oily sludge is 1:0.1～3 with the ratio of adjuvant；B, it is dried: the pretreated feedstock 600 a step prepared～700 DEG C carry out heated and stirred and are dried, and make raw aqueous rate reach 20%～30%, prepares and be dried raw material and also produce flue gas；C, burning: the dry raw material that b step prepares is carried out pelletize, and pelletizing finished product granularity is 2～15mm, then supplying gas firing 3～5min by granulated material higher than 1100 DEG C, and air demand is 30000～40000m3/h, prepares slag and also produces high-temperature flue gas；D, Solid state fermentation: the slag that step c prepares a part of mixing with dehydration oily sludge in the ratio of a step carries out pretreatment of raw material, and remaining slag is pressed into burn-free cement brick；E, exhaust-gas treatment: the flue gas that b step produces carries out gas solid separation, the prepared dry raw material of solid and b step of generation mixes and carries out pelletize, after the gas of generation carries out dust removal process, carry out desulfurization and adsorption-edulcoration again, the most purified gas passes through smoke stack emission, its particle content≤80mg/m3 of purified gas, content of sulfur dioxide≤80mg/m3, amount of nitrogen oxides≤300mg/m3, flue gas blackness≤1 grade；F, waste water process: the waste liquid obtained after dust removal process in step e is carried out solid-liquid separation, isolated mud delivers to be circulated process in a step, isolated oil enters oil pipeline, isolated sewage carries out precipitating purified treatment with desulfurization waste liquor, and the water after purification can be recycled by dedusting and desulfurized step.
- 6. oily sludge method for innocent treatment as claimed in claim 5 a kind of, it is characterised in that the adjuvant described in a step is: start as biomass smalls first, follow-up for waste residue or dry sewage sludge powder.
- 7. a kind of oily sludge method for innocent treatment as claimed in claim 5, it is characterised in that described biomass smalls is sawdust or grass meal.
- 8. oily sludge method for innocent treatment as claimed in claim 5 a kind of, it is characterised in that during desulfurization processes in step e, the flow of air inducing and blast are more than the flow of oxygen supply in step c and blast.
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