CN112174459A - Oily sludge pretreatment system and treatment method - Google Patents
Oily sludge pretreatment system and treatment method Download PDFInfo
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- CN112174459A CN112174459A CN202011189667.2A CN202011189667A CN112174459A CN 112174459 A CN112174459 A CN 112174459A CN 202011189667 A CN202011189667 A CN 202011189667A CN 112174459 A CN112174459 A CN 112174459A
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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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
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- C—CHEMISTRY; METALLURGY
- 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
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
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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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
Abstract
The invention provides an oily sludge pretreatment system applied to the technical field of oily sludge treatment, and also designs an oily sludge treatment method, wherein a liquid oil sludge pretreatment component (1) of the oily sludge pretreatment system comprises a homogeneous impurity removal device (5), a thermal washing, conditioning and centrifuging device (6), an oil-water separation device (7) and a spiral propulsion pyrolysis desorption deep treatment device (8), a screw pump (9) is communicated with the liquid oil sludge pretreatment component (1) and an oil sludge receiving pool (10), a semi-solid oil sludge pretreatment component (2) comprises a crushing and sorting device (11) and a pyrolysis desorption deep treatment device (12), and the oily sludge pretreatment system and the treatment method can be effectively applied to oily sludge pretreatment, and can meet the operation stability and the treatment efficiency of a subsequent pyrolysis desorption deep treatment system, high-quality oil content is recovered, resource recycling is realized, environmental pollution is avoided, and the environmental protection requirement is met.
Description
Technical Field
The invention belongs to the technical field of oily sludge treatment, and particularly relates to an oily sludge pretreatment system.
Background
In industrial production, the kinds of sludge treatment are quite various. While oil-containing sludges are an important class thereof. The oil-containing sludge needs to be subjected to oil-sludge separation. In the prior art, the oily sludge is calculated and respectively comprises liquid oily sludge (oil sludge), semi-solid oily sludge and solid oily sludge according to oil content, water content, solid content, material source and form. For the treatment of the oily sludge, the prior art needs classification treatment and quite complicated process procedures, so that the whole treatment system has a large number of devices, complicated process procedures and obviously increased cost. The pretreatment of the oily sludge is an important process which is necessary in the treatment of the oily sludge, and the treatment equipment and the treatment process in the prior art have complex structure, low automation degree and poor treatment efficiency and quality, and can not effectively meet the increasingly improved treatment requirement, so the actual requirement can not be met.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the oil-containing sludge pretreatment system has the advantages that the structure is simple, the oil-containing sludge pretreatment system can be effectively applied to oil-containing sludge pretreatment, high-quality oil content is recycled while the operation stability and the treatment efficiency of a subsequent pyrolysis desorption depth system are met, the resource recycling is realized, the environment pollution is avoided, and the environment protection requirement is met.
To solve the technical problems, the invention adopts the technical scheme that:
the invention relates to an oily sludge pretreatment system which comprises a liquid oil sludge pretreatment component, a semi-solid oil sludge pretreatment component, a solid oil sludge pretreatment component and an oily contaminant pretreatment component, wherein the liquid oil sludge pretreatment component comprises a homogeneous impurity removal device, a thermal washing and conditioning centrifugal device, an oil-water separation device and a screw propulsion pyrolysis desorption advanced treatment device, a screw pump is communicated with the liquid oil sludge pretreatment component and an oil sludge receiving tank, the semi-solid oil sludge pretreatment component comprises a crushing and sorting device and a pyrolysis desorption advanced treatment device, the solid oil sludge pretreatment component comprises a crushing and roughing device, a vibration screening device and a rotary pyrolysis desorption advanced treatment device, and the oily contaminant pretreatment component comprises a crushing device and a pyrolysis carbonization treatment device.
The hot washing quenching and tempering centrifugal device of the liquid oil sludge pretreatment component of the oily sludge pretreatment system comprises a quenching and tempering separation device and a centrifugal separation device, wherein a homogenizing impurity removal device is communicated with the quenching and tempering separation device, the quenching and tempering separation device is communicated with an oil-water separation device, the quenching and tempering separation device is communicated with the centrifugal separation device at the same time, the centrifugal separation device is communicated with the oil-water separation device, and the homogenizing impurity removal device is communicated with a spiral propulsion pyrolysis desorption advanced treatment device.
The crushing and sorting device of the semi-solid oil sludge pretreatment component is communicated with the semi-solid oil sludge conveying component, and the crushing and sorting device is simultaneously communicated with the pyrolysis desorption advanced treatment device; the crushing and roughing device of the solid oil sludge pretreatment component is communicated with the solid oil sludge conveying component, the crushing and roughing device is communicated with the vibration screening device, and the vibration screening device is simultaneously communicated with the rotary pyrolysis de-deep treatment device; the crushing device of the oily contaminant pretreatment component is communicated with the oily contaminant conveying component, and the crushing device is simultaneously communicated with the pyrolysis carbonization treatment device.
Homogeneity edulcoration device set up to the structure that can detach surplus debris and sand grain in the liquid fatlute, homogeneity edulcoration device sets up to the structure that can realize liquid fatlute homogeneity processing simultaneously, homogeneity edulcoration device exhaust impurity set up to the structure that can get into the screw propulsion pyrolysis desorption advanced treatment unit and carry out advanced treatment.
When the hot-washing tempering centrifugal device modulates the liquid oil sludge, the hot-washing tempering centrifugal device is set to be of a structure capable of heating, stirring and dosing tempering the liquid oil sludge, after the liquid oil sludge is heated, stirred and dosed, the liquid oil sludge is kept stand for a set time to separate out surface oil, and then enters the oil-water separation device to realize oil-water separation.
Oily sludge pretreatment systems's hot washing quenching and tempering centrifugal device's quenching and tempering separator's bottom fatlute sets up to entering centrifugal separation device, oil-water separator in proper order and realizes the structure that oily water further separates, the oil that oil-water separator separated sets up to carrying out oil recovery's structure after can realizing the dehydration through centrifuge, the water that oil-water separator separated sets up to the structure that can carry out recycling.
The semisolid oil sludge of the oily sludge pretreatment system is set into a structure capable of screening out large impurities and packaging bags through a crushing and sorting device; broken rough minute device sets up to the structure that can carry out broken rough minute to solid-state fatlute through the breaker, and the vibration screening device sets up to the structure that can the bold debris in the solid-state fatlute of vibration screening, and bold debris set up to the structure that can send into gyration heat desorption advanced treatment unit and carry out advanced treatment.
The invention also relates to an oily sludge pretreatment method which has simple steps, can be effectively applied to oily sludge pretreatment, can recover high-quality oil content while meeting the operation stability and treatment efficiency of a subsequent pyrolysis desorption deep system, realizes resource recycling, avoids environmental pollution and meets the requirement of environmental protection.
The pretreatment method of the oily sludge comprises the following steps: 1) conveying the liquid oil sludge in the oil sludge receiving pool into a homogenizing impurity removal device through a screw pump, removing residual impurities and sand grains in the oil sludge in the homogenizing impurity removal device, and realizing homogenization of the oil sludge; 2) impurities discharged by the homogeneous impurity removal device enter a spiral propulsion pyrolysis desorption advanced treatment device for advanced treatment; 3) the oil sludge for realizing the homogenization treatment enters a hot washing, tempering and centrifuging device, in the tempering process, a tempering and separating device heats and stirs the oil sludge, adds medicaments for tempering, then stands for a set time, separates out surface oil, and then sends the oil to an oil-water separating device to realize oil-water separation; 4) the bottom layer oil sludge of the conditioning and separating device sequentially enters a centrifugal separating device and an oil-water separating device to realize further oil-water separation, the oil separated by the oil-water separating device is further dehydrated through a centrifugal machine to recover oil products, and the water is recycled; 5) the oily sludge pretreatment system recycles water in the pretreatment process for many times, redundant water enters the sewage tank, sewage in the sewage tank is treated by the water treatment system to reach the standard of a factory sewage treatment station and then enters the factory sewage treatment station for treatment, and the sewage is reinjected after reaching the standard.
The semi-solid oil sludge is crushed and sorted by a crushing and sorting device, large impurities and packaging bags are removed, and large contaminants are conveyed to a contaminant temporary storage warehouse for storage and conveyed to a cement kiln for reuse; the solid oil sludge is subjected to crushing and rough separation through the crushing and rough separation device, large sundries are subjected to vibration screening through the vibration screening device, and the screened large sundries are conveyed to the contaminant temporary storage for storage.
When the hot washing, tempering and centrifuging device is used for heating, stirring and adding chemicals to perform tempering treatment on the liquid oil sludge, the heating temperature is controlled to be 70-80 ℃; the quenching and tempering separation device comprises a plurality of quenching and tempering separation tank bodies, and the plurality of quenching and tempering separation tank bodies are alternately used.
By adopting the technical scheme of the invention, the following beneficial effects can be obtained:
according to the oily sludge pretreatment system and the treatment method, when the oily sludge is pretreated, the liquid oil sludge in the oil sludge receiving pool is conveyed into the homogenizing impurity removal device through the screw pump, residual impurities and sand grains in the oil sludge are removed in the homogenizing impurity removal device, and meanwhile, the oil sludge is homogenized; impurities discharged by the homogeneous impurity removal device enter a spiral propulsion pyrolysis desorption advanced treatment device for advanced treatment; the oil sludge for realizing the homogenization treatment enters a hot washing, tempering and centrifuging device, in the tempering process, a tempering and separating device heats and stirs the oil sludge, adds medicaments for tempering, then stands for a set time, separates out surface oil, and then sends the oil to an oil-water separating device to realize oil-water separation; the bottom layer oil sludge of the conditioning and separating device sequentially enters a centrifugal separating device and an oil-water separating device to realize further oil-water separation, the oil separated by the oil-water separating device is further dehydrated through a centrifugal machine to recover oil products, and the water is recycled; the oily sludge pretreatment system recycles water in the pretreatment process for many times, redundant water enters the sewage tank, sewage in the sewage tank is treated by the water treatment system to reach the standard of a factory sewage treatment station and then enters the factory sewage treatment station for treatment, and the sewage is reinjected after reaching the standard. The system of the invention is a component of an oily sludge treatment system. The improvement of the present application is not the improvement of the specific devices (components) per se, but the unique connection of the components to form a unique system and the unique process steps to realize the treatment of the oily sludge. The oily sludge pretreatment system and the treatment method have the advantages of simple structure and simple steps, can be effectively applied to oily sludge pretreatment, can recover high-quality oil content while meeting the operation stability and treatment efficiency of a subsequent pyrolysis desorption deep system, realize resource recycling, avoid environmental pollution and meet the requirement of environmental protection.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
FIG. 1 is a schematic structural diagram of an oily sludge pretreatment system according to the present invention;
in the drawings, the reference numbers are respectively: 1. a liquid oil sludge pretreatment component; 2. a semi-solid oil sludge pretreatment component; 3. a solid oil sludge pretreatment component; 4. an oil-containing contaminant pretreatment section; 5. a homogenizing and impurity removing device; 6. hot washing, tempering and centrifuging; 7. an oil-water separation device; 8. a spiral propulsion pyrolysis desorption advanced treatment device; 9. a screw pump; 10. an oil sludge receiving pool; 11. a crushing and sorting device; 12. a pyrolysis desorption advanced treatment device; 13. a crushing and rough separation device; 14. a vibratory screening device; 15. a rotary pyrolysis dehydration advanced treatment device; 16. a crushing device; 17. a pyrolysis carbonization treatment device; 18. a quenching and tempering separation device; 19. a centrifugal separation device.
Detailed Description
The following detailed description of the embodiments of the present invention, such as the shapes and structures of the components, the mutual positions and connection relations among the components, the functions and operation principles of the components, will be made by referring to the accompanying drawings and the description of the embodiments:
as shown in the attached figure 1, the invention relates to an oily sludge pretreatment system, which comprises a liquid oil sludge pretreatment component 1, a semi-solid oil sludge pretreatment component 2, a solid oil sludge pretreatment component 3 and an oily contaminant pretreatment component 4, wherein the liquid oil sludge pretreatment component 1 comprises a homogeneous impurity removal device 5, a thermal refining and centrifuging device 6, an oil-water separation device 7 and a spiral propulsion pyrolysis desorption advanced treatment device 8, a screw pump 9 is communicated with the liquid oil sludge pretreatment component 1 and an oil sludge receiving tank 10, the semi-solid oil sludge pretreatment component 2 comprises a crushing and sorting device 11 and a pyrolysis desorption advanced treatment device 12, the solid oil sludge pretreatment component 3 comprises a crushing and coarse separation device 13, a vibration screening device 14 and a rotary thermal desorption advanced treatment device 15, and the oily contaminant pretreatment component 4 comprises a crushing device 16, a rotary thermal desorption advanced treatment device 15, A pyrolysis carbonization treatment device 17. In the structure, when the oily sludge is pretreated, the liquid oil sludge in the oil sludge receiving pool 10 is conveyed into the homogenizing impurity removal device 5 through the screw pump 9, residual impurities and sand grains in the oil sludge are removed in the homogenizing impurity removal device 5, and meanwhile, the oil sludge is homogenized; impurities discharged by the homogeneous impurity removal device 5 enter a spiral propulsion pyrolysis desorption advanced treatment device 8 for advanced treatment; the oil sludge for realizing the homogenization treatment enters a hot washing, tempering and centrifuging device 6, in the tempering process, a tempering and separating device 18 heats, stirs and adds chemicals for tempering to the oil sludge, then the oil sludge is kept still for a set time, and surface oil is separated out, and then the oil sludge is sent to an oil-water separating device 7 for realizing oil-water separation; the bottom oil sludge of the conditioning and separating device 18 sequentially enters the centrifugal separating device 19 and the oil-water separating device 7 to realize further oil-water separation, the oil separated by the oil-water separating device 7 is further dehydrated through a centrifugal machine to recover oil products, and the water is recycled; the oily sludge pretreatment system recycles water in the pretreatment process for many times, redundant water enters the sewage tank, sewage in the sewage tank is treated by the water treatment system to reach the standard of a factory sewage treatment station and then enters the factory sewage treatment station for treatment, and the sewage is reinjected after reaching the standard. The system of the invention is a component of an oil-containing sludge treatment system. The improvement of the present application, which relates to the parts of the equipment existing in the field of oily sludge treatment in the prior art, is not the improvement of the specific devices (parts) per se, but the unique connection of the parts is carried out to form a unique system and form a unique process step to realize the treatment of the oily sludge. The oily sludge pretreatment system disclosed by the invention is simple in structure, can be effectively applied to oily sludge pretreatment, can be used for recovering high-quality oil content while meeting the operation stability and treatment efficiency of a subsequent pyrolysis desorption deep system, realizes resource recycling, avoids environmental pollution and meets the requirement of environmental protection.
According to the oily sludge pretreatment system, before oily sludge pretreatment is carried out, after a material transport vehicle for transporting oily sludge (oil sludge) is measured by a truck scale, the oil sludge enters a receiving pool. A grid is arranged in the receiving tank to intercept sundries (regularly cleaned), and the sundries enter the crushing unit to be processed. Oily sludge in the receiving pool is conveyed to a homogenizing impurity removal device through a screw pump, residual impurities and sand grains with large specific gravity in the oily sludge are removed, and meanwhile homogenization of the oily sludge is achieved. And then, the impurities discharged by the homogeneous impurity removal device enter a pyrolysis desorption unit for advanced treatment.
The hot washing, tempering and centrifuging device 6 of the liquid oil sludge pretreatment component 1 of the oily sludge pretreatment system comprises a tempering and separating device 18 and a centrifuging and separating device 19, a homogenizing and impurity removing device 5 is communicated with the tempering and separating device 18, the tempering and separating device 18 is communicated with an oil-water separating device 7, the tempering and separating device 18 is simultaneously communicated with the centrifuging and separating device 19, the centrifuging and separating device 19 is communicated with the oil-water separating device 7, and the homogenizing and impurity removing device 5 is communicated with a spiral propulsion pyrolysis desorption deep treatment device 8. The above structure is a treatment of liquid sludge. The homogenized oil sludge is controlled to contain about 5 percent of solids and is conveyed to a quenching, tempering and separating device through a crusher and a screw pump. In the tempering process, oil sludge is heated (the temperature is controlled to be 70-80 ℃), stirred, subjected to chemical tempering, kept stand for a certain time to separate out surface oil, and then sent into an oil-water separation device to realize oil-water separation. In order to realize continuous operation, a plurality of tanks of the conditioning and separating device 18 are provided, and the plurality of tanks are alternately used. The bottom layer oil sludge is sent into a centrifugal separation device to realize further separation of oil, water and solid, and the oil content of the solid phase after centrifugal separation is less than 8% and the solid content is 20-40%; the separated oil and water are sent to an oil-water separation device, the oil separated by the oil-water separation device is further dehydrated through a centrifugal machine, oil recovery is carried out (the oil content is more than 97%), and the water is recycled. In order to save water resources, the process water of the system is recycled for multiple times, redundant water enters the sewage tank, and after the sewage in the sewage tank is treated by the primary water treatment system and reaches the standard of a factory sewage treatment station, the sewage enters the factory sewage treatment station for deep treatment and is reinjected after reaching the standard.
The crushing and sorting device 11 of the semi-solid oil sludge pretreatment component 2 is communicated with the semi-solid oil sludge conveying component, and the crushing and sorting device 11 is simultaneously communicated with the pyrolysis desorption advanced treatment device 14; the crushing and roughing device 13 of the solid oil sludge pretreatment component 3 is communicated with the solid oil sludge conveying component, the crushing and roughing device 13 is communicated with the vibration screening device 14, and the vibration screening device 14 is simultaneously communicated with the rotary pyrolysis deep-removal treatment device 15; the crushing device 18 of the oily contaminant pretreatment part 4 is communicated with the oily contaminant conveying part, and the crushing device 16 is simultaneously communicated with the pyrolysis carbonization treatment device 17. According to the structure, the semi-solid oil sludge is crushed and sorted to remove contaminants such as large impurities and packaging bags, and the large contaminants are conveyed to the contaminant temporary storage warehouse for storage and conveyed to the cement kiln for resource utilization. For solid oil sludge (high solid-containing oily sludge), due to high solid content and low oil content, quenching and tempering pretreatment is not needed, crushing and rough separation are directly carried out through a crusher, and then large impurities are selected through vibration screening. And conveying the screened large sundries to a contaminant temporary storage warehouse for storage. Thus, the pretreatment of the two kinds of sludge is realized respectively.
The semisolid oil sludge of the oily sludge pretreatment system is set into a structure capable of screening out large impurities and packaging bags through a crushing and sorting device 13; broken rough minute device 13 sets up to the structure that can carry out broken rough minute to solid-state fatlute through the breaker, and vibratory screening device 14 sets up to the structure that can the bold debris in the solid-state fatlute of vibratory screening, and bold debris set up to the structure that can send into gyration thermal desorption advanced treatment unit 15 and carry out advanced treatment.
The invention also relates to an oily sludge pretreatment method which has simple steps, can be effectively applied to oily sludge pretreatment, can recover high-quality oil content while meeting the operation stability and treatment efficiency of a subsequent pyrolysis desorption deep system, realizes resource recycling, avoids environmental pollution and meets the requirement of environmental protection.
The pretreatment method of the oily sludge comprises the following steps: 1) liquid oil sludge in the oil sludge receiving pool 10 is conveyed into the homogenizing impurity removal device 5 through a screw pump 9, residual impurities and sand particles in the oil sludge are removed in the homogenizing impurity removal device 5, and meanwhile, the oil sludge is homogenized; 2) impurities discharged by the homogeneous impurity removal device 5 enter a spiral propulsion pyrolysis desorption advanced treatment device 8 for advanced treatment; 3) the oil sludge for realizing the homogenization treatment enters a hot washing, tempering and centrifuging device 6, in the tempering process, a tempering and separating device 18 heats, stirs and adds chemicals for tempering to the oil sludge, then the oil sludge is kept still for a set time, and surface oil is separated out, and then the oil sludge is sent to an oil-water separating device 7 for realizing oil-water separation; 4) the bottom oil sludge of the conditioning and separating device 18 sequentially enters the centrifugal separating device 19 and the oil-water separating device 7 to realize further oil-water separation, the oil separated by the oil-water separating device 7 is further dehydrated through a centrifugal machine to recover oil products, and the water is recycled; 5) the oily sludge pretreatment system recycles water in the pretreatment process for many times, redundant water enters the sewage tank, sewage in the sewage tank is treated by the water treatment system to reach the standard of a factory sewage treatment station and then enters the factory sewage treatment station for treatment, and the sewage is reinjected after reaching the standard.
The semi-solid oil sludge is crushed and sorted by a crushing and sorting device 11, large impurities and packaging bags are removed, and large contaminants are conveyed to a contaminant temporary storage for storage and conveyed to a cement kiln for reuse; the solid oil sludge is crushed and coarsely separated by a crushing and coarsely separating device 13, large impurities are subjected to vibration screening by a vibration screening device 14, and the screened large impurities are conveyed to a contaminant temporary storage for storage.
The hot washing, tempering and centrifuging device 6 is used for heating, stirring and adding chemicals to carry out tempering treatment on the liquid oil sludge, and the heating temperature is controlled between 70 and 80 ℃; the tempering and separating device 18 comprises a plurality of tempering and separating tank bodies which are alternately used.
According to the oily sludge pretreatment system and the treatment method, when the oily sludge is pretreated, the liquid oil sludge in the oil sludge receiving pool is conveyed into the homogenizing impurity removal device through the screw pump, residual impurities and sand grains in the oil sludge are removed in the homogenizing impurity removal device, and meanwhile, the oil sludge is homogenized; impurities discharged by the homogeneous impurity removal device enter a spiral propulsion pyrolysis desorption advanced treatment device for advanced treatment; the oil sludge for realizing the homogenization treatment enters a hot washing, tempering and centrifuging device, in the tempering process, a tempering and separating device heats and stirs the oil sludge, adds medicaments for tempering, then stands for a set time, separates out surface oil, and then sends the oil to an oil-water separating device to realize oil-water separation; the bottom layer oil sludge of the conditioning and separating device sequentially enters a centrifugal separating device and an oil-water separating device to realize further oil-water separation, the oil separated by the oil-water separating device is further dehydrated through a centrifugal machine to recover oil products, and the water is recycled; the oily sludge pretreatment system recycles water in the pretreatment process for many times, redundant water enters the sewage tank, sewage in the sewage tank is treated by the water treatment system to reach the standard of a factory sewage treatment station and then enters the factory sewage treatment station for treatment, and the sewage is reinjected after reaching the standard. The system of the invention is a component of an oily sludge treatment system. The improvement of the present application is not the improvement of the specific devices (components) per se, but the unique connection of the components to form a unique system and the unique process steps to realize the treatment of the oily sludge. The oily sludge pretreatment system and the treatment method have the advantages of simple structure and simple steps, can be effectively applied to oily sludge pretreatment, can recover high-quality oil content while meeting the operation stability and treatment efficiency of a subsequent pyrolysis desorption deep system, realize resource recycling, avoid environmental pollution and meet the requirement of environmental protection.
The present invention has been described in connection with the accompanying drawings, and it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, changes and equivalents of the embodiments of the invention, and its application to other applications without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides an oily sludge pretreatment systems which characterized in that: the oily sludge pretreatment system comprises a liquid oily sludge pretreatment component (1), a semi-solid oily sludge pretreatment component (2), a solid oily sludge pretreatment component (3), an oily contaminant pretreatment component (4), wherein the liquid oily sludge pretreatment component (1) comprises a homogeneous impurity removal device (5), a thermal washing and conditioning centrifugal device (6), an oil-water separation device (7) and a screw propulsion pyrolysis desorption deep treatment device (8), a screw pump (9) is communicated with the liquid oily sludge pretreatment component (1) and an oily sludge receiving pool (10) and is communicated with the oil sludge receiving pool (10), the semi-solid oily sludge pretreatment component (2) comprises a crushing and sorting device (11) and a pyrolysis desorption deep treatment device (12), the solid oily sludge pretreatment component (3) comprises a crushing and rough sorting device (13), a vibration screening device (14) and a rotary pyrolysis deep treatment device (15), the pretreatment component (4) for oil-containing contaminants comprises a crushing device (16) and a pyrolysis carbonization treatment device (17).
2. The oily sludge pretreatment system as set forth in claim 1, characterized in that: the hot washing quenching and tempering centrifugal device (6) of the liquid oil sludge pretreatment component (1) of the oily sludge pretreatment system comprises a quenching and tempering separation device (18) and a centrifugal separation device (19), a homogenizing impurity removal device (5) is communicated with the quenching and tempering separation device (18), the quenching and tempering separation device (18) is communicated with an oil-water separation device (7), the quenching and tempering separation device (18) is simultaneously communicated with the centrifugal separation device (19), the centrifugal separation device (19) is communicated with the oil-water separation device (7), and the homogenizing impurity removal device (5) is communicated with a spiral propulsion pyrolysis desorption deep treatment device (8).
3. The oily sludge pretreatment system as set forth in claim 1, characterized in that: the crushing and sorting device (11) of the semi-solid oil sludge pretreatment component (2) is communicated with the semi-solid oil sludge conveying component, and the crushing and sorting device (11) is simultaneously communicated with the pyrolysis desorption advanced treatment device (14); the crushing and rough separation device (13) of the solid oil sludge pretreatment component (3) is communicated with the solid oil sludge conveying component, the crushing and rough separation device (13) is communicated with the vibration screening device (14), and the vibration screening device (14) is simultaneously communicated with the rotary thermal desorption advanced treatment device (15); the crushing device (18) of the oily contaminant pretreatment component (4) is communicated with the oily contaminant conveying component, and the crushing device (16) is simultaneously communicated with the pyrolysis carbonization treatment device (17).
4. The oily sludge pretreatment system according to claim 1 or 2, characterized in that: homogeneity edulcoration device (5) set up to the structure that can detach remaining debris and sand grain in the liquid fatlute, homogeneity edulcoration device (5) set up simultaneously to the structure that can realize liquid fatlute homogeneous treatment, homogeneity edulcoration device (5) exhaust impurity set up to the structure that can get into spiral propulsion pyrolysis desorption advanced treatment unit (8) and carry out the advanced treatment.
5. The oily sludge pretreatment system according to claim 1 or 2, characterized in that: when the hot-washing conditioning centrifugal device (6) modulates the liquid oil sludge, the hot-washing conditioning centrifugal device (6) is set to be of a structure capable of heating, stirring and dosing conditioning the liquid oil sludge, after the liquid oil sludge is heated, stirred and dosed, the liquid oil sludge is kept stand for a set time to separate out surface oil, and then enters the oil-water separation device (7) to realize oil-water separation.
6. The oily sludge pretreatment system as claimed in claim 5, characterized in that: the structure that the bottom fatlute of quenching and tempering separator (18) of oily sludge pretreatment systems's hot washing quenching and tempering centrifugal device (6) set up to entering centrifugal separation device (19), oil-water separator (7) in proper order and realize the further separation of profit, the oil that oil-water separator (7) separated sets up to carrying out oil recovery's structure after can realizing the dehydration through centrifuge, the water that oil-water separator (7) separated sets up to the structure that can carry out recycling.
7. The oily sludge pretreatment system according to claim 1 or 3, wherein: the semisolid oil sludge of the oily sludge pretreatment system is set into a structure capable of screening out large impurities and packaging bags through a crushing and sorting device (13); the crushing rough separation device (13) is set to be a structure capable of crushing and rough separating solid oil sludge through the crusher, the vibration screening device (14) is set to be a structure capable of screening large impurities in the solid oil sludge in a vibration mode, and the large impurities are set to be a structure capable of being sent into the rotary thermal desorption advanced treatment device (15) to be subjected to advanced treatment.
8. A pretreatment method of oily sludge is characterized in that: the pretreatment method of the oily sludge comprises the following steps: 1) liquid oil sludge in the oil sludge receiving pool (10) is conveyed into a homogenizing impurity removal device (5) through a screw pump (9), residual impurities and sand grains in the oil sludge are removed in the homogenizing impurity removal device (5), and meanwhile, the oil sludge is homogenized; 2) impurities discharged by the homogenizing impurity removal device (5) enter a spiral propulsion pyrolysis desorption advanced treatment device (8) for advanced treatment; 3) the oil sludge for realizing the homogenization treatment enters a hot washing, tempering and centrifuging device (6), in the tempering process, a tempering and separating device (18) heats, stirs and adds drugs to temper the oil sludge, then the oil sludge is kept still for a set time, and surface oil is separated out, and then the oil sludge is sent to an oil-water separating device (7) to realize oil-water separation; 4) bottom layer oil sludge of the conditioning and separating device (18) sequentially enters a centrifugal separating device (19) and an oil-water separating device (7) to realize further oil-water separation, oil separated by the oil-water separating device (7) is further dehydrated through a centrifugal machine to recover oil products, and water is recycled; 5) the oily sludge pretreatment system recycles water in the pretreatment process for many times, redundant water enters the sewage tank, sewage in the sewage tank is treated by the water treatment system to reach the standard of a factory sewage treatment station and then enters the factory sewage treatment station for treatment, and the sewage is reinjected after reaching the standard.
9. The method for pretreating oily sludge according to claim 8, wherein: the semi-solid oil sludge is crushed and sorted by a crushing and sorting device (11), large impurities and packaging bags are removed, and large contaminants are conveyed to a contaminant temporary storage warehouse for storage and conveyed to a cement kiln for reuse; the solid oil sludge is crushed and coarsely separated through a crushing and coarsely separating device (13), then large impurities are subjected to vibration screening through a vibration screening device (14), and the screened large impurities are conveyed to a contaminant temporary storage and stored.
10. The oil-containing sludge pretreatment method according to claim 8 or 9, characterized in that: the hot washing, tempering and centrifuging device (6) is used for heating, stirring and adding chemicals to perform tempering treatment on the liquid oil sludge, and the heating temperature is controlled to be 70-80 ℃; the tempering and separating device (18) comprises a plurality of tempering and separating tank bodies which are alternately used.
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| CN113511791A (en) * | 2021-07-25 | 2021-10-19 | 浙江宜可欧环保科技有限公司 | Oil sludge screening pretreatment system |
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| CN110606633A (en) * | 2019-09-12 | 2019-12-24 | 广西博世科环保科技股份有限公司 | Oily sludge recycling and reducing treatment method and treatment system |
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| CN110606633A (en) * | 2019-09-12 | 2019-12-24 | 广西博世科环保科技股份有限公司 | Oily sludge recycling and reducing treatment method and treatment system |
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| CN113511791A (en) * | 2021-07-25 | 2021-10-19 | 浙江宜可欧环保科技有限公司 | Oil sludge screening pretreatment system |
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