CN212264141U - Novel oil-based rock debris resourceful treatment device - Google Patents
Novel oil-based rock debris resourceful treatment device Download PDFInfo
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- CN212264141U CN212264141U CN202020943544.2U CN202020943544U CN212264141U CN 212264141 U CN212264141 U CN 212264141U CN 202020943544 U CN202020943544 U CN 202020943544U CN 212264141 U CN212264141 U CN 212264141U
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Abstract
The utility model discloses a novel oil base detritus resourceful treatment device belongs to well drilling waste treatment equipment field, and the treatment facility volume that aim at has now to be used for oil base detritus is great, can't realize the problem of oil base detritus processing along with the drilling. The device comprises a pretreatment unit, a leaching unit, a precise desorption unit, an evaporation unit and a condensation and solvent recovery unit; the pretreatment unit comprises a separator, a scraper conveyor, a vibrating screen, a recovery tank, a first conveying device and a second conveying device, wherein the scraper conveyor is connected with the separator and can scrape out solid materials in the separator. The application provides a new oil base detritus resourceful treatment equipment, it can realize the while-drilling of oil base detritus and handle, and have the advantage of standardization, miniaturization, sled dress ization, can realize the final processing of well drilling discarded object to oil base detritus characteristics, effectively avoids secondary pollution's production, has higher using value and better application prospect.
Description
Technical Field
The utility model relates to a well drilling waste disposal equipment field specifically is a novel oil base detritus resourceful treatment device. The method and the device can realize the reduction and resource treatment of the drilling waste oil-based cuttings generated by the exploitation of the petroleum shale gas, have the advantages of strong adaptability, no secondary pollution and the like, and have higher application value and better application prospect.
Background
In the process of drilling and developing petroleum and natural gas, aiming at the high-difficulty drilling operation requirements of highly deviated wells, water-sensitive formations, complex formations, horizontal wells and the like, the conventional water-based mud cannot well meet the requirements of the drilling operation, and the oil-based mud taking oil as a continuous phase has obvious advantages and can be used for the high-difficulty drilling operation. In drilling engineering of deep wells and ultra-deep wells in Xinjiang in China and shale gas development drilling engineering in Sichuan and Yu areas, the oil-based drilling mud is widely used. The oil-based drilling mud contains a large amount of mineral oil-based oil, and the content of the mineral oil-based oil is about 80-90%. Currently, the base oils widely used in oil-based drilling muds include diesel, synthetic mineral oils. During the drilling process, along with the circulation of mud, a large amount of drilling wastes such as waste oil-based cuttings and the like can be generated, and the generation amount of single-well oil-based cuttings is 400m3～800m3And the pollution is a main pollution problem which troubles the ecological environment protection in the oil and gas field development process. According to the regulations of national hazardous waste records of the ministry of environmental protection, the oil-based rock debris in the oil and gas field development process is calibrated to be HW08 type hazardous waste. At present, aiming at the treatment of the oil-based rock debris, the oil-based rock debris treatment and disposal technologies used and under study mainly comprise a spin-drying-centrifugal separation technology, a thermal desorption technology, a microbial treatment technology and a solidification resourceChemical techniques, and the like.
The thermal desorption technology is also called as thermal desorption technology, and is used for separating and condensing most of liquid phase in the oil-based rock debris and then recovering the liquid phase under an anaerobic heating condition, so that the aim of separating the rock debris from oil is fulfilled. The heating method of the desorption furnace is classified into fuel heating, electric heating, hammer mill thermal desorption and the like according to the difference of heating media. The thermal desorption technology using fuel heating can directly utilize fuel (such as diesel oil, natural gas, associated gas and the like) for heating, or utilize fuel for heating steam, and then utilize the steam for heating desorption equipment. Thermal desorption equipment heated by fuel is generally large in volume and is suitable for building a centralized processing station. The relative volume of the electric heating equipment is slightly smaller, and the oil content of the thermal desorption residue is lower than 1 percent; the properties of the recovered oil meet the requirements of recycling and slurry preparation, and the method has the advantages of high thermal efficiency (more than 85%), small occupied area, skid-mounting capability, safety and reliability of equipment and the like.
The microbial treatment of the oil-based rock debris is to perform tiltably functional restoration and improvement on the oil-based drill debris by using microbial bacteria, decompose petroleum hydrocarbons and other organic matters in the oil-based rock debris by using microbes, and enable the treated oil-based rock debris to reach the standard of site greening. The field area required by the microbial treatment technology is large, the treatment period is about 30-60 d, even longer, and the treatment period is limited by environmental conditions such as temperature and humidity.
The solidification and resource treatment of the oil-based rock debris refers to that the oil-containing rock debris is mixed by using cement and a curing agent and processed into various resource products, such as paving roadbed materials, non-sintered ceramic granules, non-sintered bricks and the like. Because the oil content is higher, the oil-based drilling cuttings are directly solidified and difficult to reach the standard; therefore, it is generally used as a final disposal technique such as a spin-drying-centrifugation technique, a thermal desorption technique, and a normal-temperature desorption technique.
However, the prior art is generally large in equipment volume and cannot realize the treatment of the oil-based rock debris while drilling. To this end, a new device and/or apparatus is urgently needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: the novel oil-based rock debris recycling device is provided for solving the problems that the existing processing equipment for the oil-based rock debris is large in size and cannot realize the processing of the oil-based rock debris while drilling. The application provides a new oil base detritus resourceful treatment equipment, it can realize the while-drilling of oil base detritus and handle, and have the advantage of standardization, miniaturization, sled dress ization, can realize the final processing of well drilling discarded object to oil base detritus characteristics, effectively avoids secondary pollution's production, has higher using value and better application prospect.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
a novel oil-based rock debris recycling treatment device comprises a pretreatment unit, a leaching unit, a precise desorption unit, an evaporation unit and a condensation and solvent recovery unit;
the pretreatment unit comprises a separator, a scraper conveyor, a vibrating screen, a recovery tank, a first conveying device and a second conveying device, wherein the separator is connected with oil-based rock debris to be treated, the scraper conveyor is connected with the separator and can scrape out solid materials in the separator, a liquid-phase discharge port of the separator is connected with the recovery tank, the liquid-phase materials separated by the separator can return to the recovery tank for recovery, the scraper conveyor is connected with the vibrating screen, the vibrating screen can screen the solid materials conveyed by the scraper conveyor and respectively obtain first particle size materials and second particle size materials, and the vibrating screen is respectively connected with the first conveying device and the second conveying device;
the leaching unit comprises a spray type leaching device, a soaking type leaching device, a third mixed liquid pump and a fourth mixed liquid pump, wherein a feed inlet is formed in the upper part of the spray type leaching device, a liquid sprayer is arranged at the top of the spray type leaching device, a liquid-phase discharge outlet is formed in the lower part of the spray type leaching device, and a solid-phase discharge outlet is formed in the bottom of the spray type leaching device;
the first conveying device is connected with a feed inlet of the spray-type leacher, the first-particle-size materials can enter the spray-type leacher of the leaching unit through the first conveying device for leaching treatment, the third mixed liquid pump is connected with the spray-type leacher, and the third mixed liquid pump can realize circulation of the spray liquid in the spray-type leacher;
one end of a rotary cylinder of the immersion type leacher is provided with a feed inlet, and the other end of the immersion type leacher is provided with a solid phase discharge outlet; the rotary cylinder body of the immersion type leacher is circumferentially provided with a liquid spraying device, and the bottom of the immersion type leacher is provided with a liquid phase discharge hole;
the second conveying device is connected with a feed inlet of the immersion type leacher, materials with second particle sizes can enter the immersion type leacher of the leaching unit through the second conveying device for leaching treatment, the fourth mixed liquid pump is connected with a liquid spraying device of the immersion type leacher and can realize circulation of spraying liquid in the immersion type leacher;
the precise desorption unit comprises a centrifuge and a DTDC desolventizer, wherein the DTDC desolventizer is respectively provided with a matched air net, a feed inlet, a steam outlet, a steam inlet, a gas phase outlet and a dried material outlet, and detritus obtained by treatment of the DTDC desolventizer can be discharged through the dried material outlet;
the liquid phase material discharged from the liquid phase discharge port of the spray type leacher and the liquid phase material discharged from the liquid phase discharge port of the soak type leacher can be centrifugally separated by the centrifugal machine to respectively obtain a centrifugal liquid phase material and a centrifugal solid phase material;
the solid-phase discharge hole of the spray type leacher, the solid-phase discharge hole of the soak type leacher and the centrifugal machine are respectively connected with the feed hole of the DTDC desolventizing machine, and solid-phase materials discharged through the solid-phase discharge hole of the spray type leacher, solid-phase materials discharged through the solid-phase discharge hole of the soak type leacher and centrifugal solid-phase materials obtained by separation of the centrifugal machine can enter the DTDC desolventizing machine for evaporation treatment;
the evaporation unit comprises a solution pump, a multi-effect evaporation system, a base oil recovery device and a steam generation device, wherein the multi-effect evaporation system is respectively provided with a feed inlet, an evaporation residual liquid outlet, a steam inlet, a steam outlet and a gas phase outlet, the feed inlet is positioned at the top of the multi-effect evaporation system, and the evaporation residual liquid outlet is positioned at the bottom of the multi-effect evaporation system;
the centrifugal machine is connected with the solution pump, an outlet of the solution pump is connected with a feed inlet of the multi-effect evaporation system, centrifugal liquid-phase materials obtained by liquid separation of the centrifugal machine can enter the multi-effect evaporation system through the solution pump for evaporation treatment, an evaporation residual liquid outlet of the multi-effect evaporation system is connected with a base oil recovery device, and the base oil recovery device can recover residues generated by the multi-effect evaporation system;
the steam generating device is respectively connected with a steam inlet of the DTDC desolventizing machine and a steam outlet of the DTDC desolventizing machine and can provide steam for the DTDC desolventizing machine; the steam generating device is respectively connected with a steam inlet on the multi-effect evaporation system and a steam outlet on the multi-effect evaporation system and can provide steam for the multi-effect evaporation system;
the condensation and solvent recovery unit comprises a condenser, a refrigerator, a buffer pool and a solvent storage tank, wherein the buffer pool, the refrigerator and the condenser form condensation circulation, and cooling water in the buffer pool can be cooled by the refrigerator and condensed by the condenser for heat exchange in sequence and then returns to the buffer pool for recycling;
the condenser is provided with an air inlet and a liquid outlet respectively, the air inlet of the condenser is positioned at the top of the condenser, and the liquid outlet of the condenser is positioned at the bottom of the condenser; a gas phase outlet of the DTDC desolventizing machine is connected with a gas inlet of the condenser, and gas phase materials separated by the DTDC desolventizing machine can enter the condenser for condensation treatment through the gas phase outlet of the DTDC desolventizing machine; the gas phase outlet of multiple-effect evaporation system links to each other with the air inlet of condenser and the gas phase material of multiple-effect evaporation system separation carries out condensation processing in can getting into the condenser, the liquid outlet of condenser links to each other with the solvent storage tank and in the solvent storage tank can get into the solvent storage tank through the solvent that the condenser condensation produced, the solvent storage tank leaches the ware with the fountain respectively, soaks the formula and leaches the ware and link to each other and the retrieval and utilization solvent in the solvent storage tank can return respectively that the fountain leaches the ware, soaks the formula and leaches and carry out the leaching processing.
The first conveying device and the second conveying device are respectively screw conveyors.
The vibrating screen is characterized in that a first hopper and a second hopper are respectively arranged on the vibrating screen, the first hopper is connected with the first conveying device, first particle size materials obtained by screening of the vibrating screen can enter the first hopper and are output through the first conveying device, the second hopper is connected with the second conveying device, and second particle size materials obtained by screening of the vibrating screen can enter the second hopper and are output through the second conveying device.
And a liquid-phase discharge port of the spray type leacher is positioned 0.3-1.5 m above a solid-phase discharge port of the spray type leacher.
The leaching unit further comprises a third conveying device and a fourth conveying device, a solid-phase discharge hole of the spray type leaching device is connected with a feed inlet of the DTDC desolventizing machine through the third conveying device, and a solid-phase discharge hole of the soaking type leaching device is connected with a feed inlet of the DTDC desolventizing machine through the fourth conveying device.
And the third conveying device and the fourth conveying device are respectively closed screw conveyors.
The multi-effect evaporation system is a triple-effect evaporator.
The device further comprises a fifth conveying device, wherein the fifth conveying device is connected with the DTDC desolventizing machine and can output the rock debris processed by the DTDC desolventizing machine.
The fifth conveying device is a scraper conveyor.
The steam generating device is a boiler.
The solvent storage tank is respectively connected with the spray type extractor and the immersion type extractor through the solvent pump.
Still include material collection device, material collection device links to each other with the DTDC desolventizer and the detritus on the DTDC desolventizer can get into in the material collection device and collect.
And a solvent reflux pump is arranged on the pipeline of the condensation circulation.
The solvent reflux pump is positioned in a pipeline connecting the buffer pool and the refrigerating machine.
The immersion type leacher adopts a spiral stirrer to assist in quickly stirring, mixing and reacting.
The spray type leacher adopts a spiral scraper as a main discharging mode, so that residual materials are avoided.
The pretreatment unit, the leaching unit, the precise desorption unit, the evaporation unit and the condensation and solvent recovery unit are all in one of modularization, aboveground type and assembly type.
The device is characterized by further comprising a control system, wherein the pretreatment unit, the leaching unit, the precise desorption unit, the evaporation unit and the condensation and solvent recovery unit are respectively connected with the control system.
The control system is one or more of a single chip microcomputer or a DCS.
In order to solve the problems, the application provides a recycling device for processing, standardizing and modularizing waste oil-based rock debris while drilling, which forms a complete set of processing equipment for the oil-based rock debris by mutual matching of units and ensures that no secondary pollution is caused in the processing engineering.
Compared with the prior art, this application includes parts such as preprocessing unit, leaching unit, accurate desorption unit, evaporation unit, condensation and solvent recovery unit, and the micro-negative pressure is adopted in the full title, avoids waste gas to leak. Meanwhile, the condensation and solvent recovery unit adopts a circulating water cooling mode, so that the freezing water capacity and flow are large, the operation cost is saved, and a better energy-saving effect is achieved. Further, the mutual cooperation of leaching unit, accurate desorption unit, evaporation unit, condensation and solvent recovery unit quality control is utilized to this application, effectively retrieves desorption medicament, and the rate of recovery reaches about 99%, has apparent progressive meaning. By adopting the method and the device, the solid phase and the liquid phase in the oil-based rock debris can be effectively separated, the separation efficiency is high, the time consumption is short, and the economic value is obvious. After the treatment, the solid-phase substance amount in the oil-based rock debris is greatly reduced, the treatment cost is effectively reduced, and the oil-based rock debris can be treated according to law after being utilized up to the standard; the liquid phase in the oil-based rock debris can be recycled, so that the treatment cost is reduced; the desorption solvent adopted in the system can be effectively recovered and recycled, the treatment cost of the oil-based rock debris is greatly reduced, and the method has remarkable progress significance.
Drawings
Fig. 1 is a schematic structural view of embodiment 1.
The labels in the figure are: 1 is a separator, 2 is a vibrating screen, 3 is a spray type extractor, 4 is an immersion type extractor, 5 is a centrifuge, 6 is a DTDC desolventizing machine, 7 is a multi-effect evaporation system, 8 is a base oil recovery device, 9 is a boiler, 20 is a condenser, 21 is a refrigerator, 22 is a buffer tank, and 23 is a solvent storage tank.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in the figure, the present embodiment provides a CDH type oil-based rock debris resourceful treatment device, which includes a pretreatment unit, a leaching unit, a precision desorption unit, an evaporation unit, a condensation and solvent recovery unit, and a control system.
In this embodiment, pretreatment unit, leaching unit, accurate desorption unit, evaporation unit, condensation and solvent recovery unit link to each other with control system respectively, and control system chooses singlechip or DCS for use.
The drilling waste has the characteristics of high viscosity, high specific gravity and wide particle size distribution, and therefore, the pretreatment unit is arranged in the embodiment, and the solid-liquid separation is carried out on the raw materials by utilizing the mechanical separation force, so that the subsequent quality separation treatment is facilitated, and the high treatment efficiency of the system is kept.
In the embodiment, the pretreatment unit comprises a separator, a scraper conveyor, a vibrating screen, a recovery tank, a first conveying device and a second conveying device, wherein the separator is connected with the oil-based rock debris to be treated; wherein, the first conveying device and the second conveying device respectively adopt screw conveyors. The scraper conveyer is connected with the separator, a liquid phase discharge port of the separator is connected with the recovery tank, the scraper conveyer is connected with the vibrating screen, and the vibrating screen is respectively connected with the first conveying device and the second conveying device. Meanwhile, the first conveying device is connected with a feed inlet of the spray type leacher, and the second conveying device is connected with a feed inlet of the soak type leacher. Furthermore, a first hopper and a second hopper are respectively arranged on the vibrating screen, the first hopper is connected with the first conveying device, first particle size materials obtained by screening of the vibrating screen can enter the first hopper and be output through the first conveying device, the second hopper is connected with the second conveying device, and second particle size materials obtained by screening of the vibrating screen can enter the second hopper and be output through the second conveying device.
In the embodiment, the leaching unit is arranged, and the solid phase surface oil phase is resolved by adopting a solvent leaching mode, so that the oil content in the oil-containing solid phase can be reduced, and the purpose of recycling oil products can be achieved.
In this embodiment, the leaching unit includes a spray-type leaching device, a soaking-type leaching device, a third mixed liquid pump, a fourth mixed liquid pump, a third conveying device, and a fourth conveying device, wherein a feed inlet is formed at the upper part of the spray-type leaching device, a liquid sprayer is arranged at the top of the spray-type leaching device, a liquid-phase discharge outlet is formed at the lower part of the spray-type leaching device, and a solid-phase discharge outlet is formed at the bottom of the spray-type leaching device; the liquid phase discharge port of the spray type extractor is positioned 0.5m above the solid phase discharge port of the spray type extractor. And the third mixed liquid pump is connected with the spray-type leacher and is used for realizing the circulation of the spray liquid in the spray-type leacher. In this embodiment, the third conveying device and the fourth conveying device are respectively a closed screw conveyor.
Meanwhile, one end of a rotary cylinder of the immersion type leacher is provided with a feed inlet, and the other end of the immersion type leacher is provided with a solid phase discharge outlet; the rotary cylinder body of the immersion type leacher is circumferentially provided with a liquid spraying device, and the bottom of the immersion type leacher is provided with a liquid phase discharge hole. And the fourth mixed liquid pump is connected with the liquid spraying device of the immersion type extractor and is used for realizing the circulation of the spraying liquid in the immersion type extractor. In the embodiment, coarse materials enter the soaking extractor, fine materials enter the spraying extractor, and oil-based extraction is facilitated. Meanwhile, the immersion type leacher adopts a spiral stirrer to assist in quickly stirring, mixing and reacting; the leaching device adopts the oil base in the medicament extraction oil base detritus, and the soaking type leaching device is provided with a stirrer, so that the medicament and the detritus are mixed more uniformly. The spray type leacher adopts a spiral scraper as a main discharging mode to avoid residual materials.
In this embodiment, accurate desorption unit includes centrifuge, DTDC desolventizing machine, material collection device, is provided with supporting wind net, feed inlet, steam outlet, steam inlet, dry material export on the DTDC desolventizing machine respectively. Wherein, the liquid phase discharge port of the spray type extractor and the liquid phase discharge port of the immersion type extractor are respectively connected with a centrifuge; and respectively feeding the liquid-phase material discharged from the liquid-phase discharge port of the spray type leacher and the liquid-phase material discharged from the liquid-phase discharge port of the soak type leacher into a centrifugal machine, and performing centrifugal separation to respectively obtain a centrifugal liquid-phase material and a centrifugal solid-phase material. Meanwhile, aiming at solid-phase materials, a solid-phase discharge hole of the spray type leacher, a solid-phase discharge hole of the soak type leacher and a centrifugal machine are respectively connected with a feed inlet of the DTDC desolventizing machine; the solid phase material discharged from the solid phase discharge port of the spray type leacher, the solid phase material discharged from the solid phase discharge port of the soak type leacher and the centrifugal solid phase material obtained by the separation of the centrifugal machine enter a DTDC desolventizing machine (the centrifugal machine is connected with the DTDC desolventizing machine through a closed spiral conveyor), and are subjected to the evaporation and the desolventizing treatment through the DTDC desolventizing machine. In this embodiment, the solid phase discharge gate of spray type leaches the ware and links to each other with the feed inlet of DTDC desolventizing machine through third conveyor, and the solid phase discharge gate of soaking type leaches the ware and links to each other with the feed inlet of DTDC desolventizing machine through fourth conveyor. Meanwhile, the device also comprises a fifth conveying device, wherein the fifth conveying device is connected with the DTDC desolventizing machine and can output the rock debris processed by the DTDC desolventizing machine; in this embodiment, the fifth conveying device is a scraper conveyor. After the steam stripping treatment by a DTDC desolventizer, respectively obtaining gas-phase materials and dry rock debris; and discharging the detritus treated by the DTDC desolventizer through a dry material outlet of the DTDC desolventizer, collecting the detritus by a material collecting device, and treating the detritus according to a law after the detritus is utilized up to the standard. In this embodiment, centrifuge carries out solid-liquid separation to leaching mixed liquid, further reduces mixed liquid solid content, makes its retrieval and utilization up to standard.
In this embodiment, the evaporation unit includes a solution pump, a multi-effect evaporation system, a base oil recovery device, and a steam generation device. The multi-effect evaporation system of this embodiment selects triple-effect evaporator (triple-effect evaporator's compressor adopts imported roots compressor to reserve aftertreatment system such as stiff ware and crystallization separation system and steam outlet to condenser), and steam generation device selects the boiler for use. The multi-effect evaporation system is provided with a feed inlet, an evaporation residual liquid outlet, a steam inlet, a steam outlet and a gas phase outlet respectively, the feed inlet is positioned at the top of the multi-effect evaporation system, and the evaporation residual liquid outlet is positioned at the bottom of the multi-effect evaporation system. The centrifugal machine is connected with a solution pump, the outlet of the solution pump is connected with the feed inlet of the multi-effect evaporation system, and the evaporation residual liquid outlet of the multi-effect evaporation system is connected with a base oil recovery device. Meanwhile, the steam generating device is respectively connected with a steam inlet of the DTDC desolventizing machine and a steam outlet of the DTDC desolventizing machine; the steam generating device is respectively connected with a steam inlet on the multi-effect evaporation system and a steam outlet on the multi-effect evaporation system.
In this embodiment, the condensing and solvent recovering unit includes a condenser, a refrigerator, a buffer tank, a solvent storage tank, and a solvent pump. The buffer pool, the refrigerator and the condenser are sequentially connected through pipelines to form condensation circulation, and cooling water in the buffer pool can be sequentially cooled by the refrigerator and condensed by the condenser for heat exchange and then returns to the buffer pool for cyclic utilization. In this embodiment, a solvent reflux pump is disposed on the pipeline of the condensation cycle, and the solvent reflux pump is located in the pipeline connecting the buffer tank and the refrigerator.
Meanwhile, the condenser is provided with an air inlet and a liquid outlet respectively, the air inlet of the condenser is positioned at the top of the condenser, and the liquid outlet of the condenser is positioned at the bottom of the condenser. The gas phase outlet of the DTDC desolventizer is connected with the gas inlet of the condenser, and gas phase materials separated by the DTDC desolventizer can enter the condenser through the gas phase outlet of the DTDC desolventizer to be condensed. The gas phase outlet of the multi-effect evaporation system is connected with a condenser, and the liquid outlet of the condenser is connected with a solvent storage tank. Meanwhile, the solvent storage tank is respectively connected with the spray type extractor and the immersion type extractor through the solvent pump.
In this scheme, one of modularization, aboveground formula, assembled is all adopted to pretreatment unit, leaching unit, accurate desorption unit, evaporation unit, condensation and solvent recovery unit.
Further, the inventors describe the scheme of the present embodiment as follows.
In the pretreatment unit, oil-based rock debris to be treated enters a separator for separation treatment to respectively obtain a first solid-phase material and a first liquid-phase material; the scraper conveyer is used for scraping out solid materials in the separator, and liquid-phase materials separated by the separator return to the recovery tank for recycling and tempering. Meanwhile, the scraper conveyor is connected with the vibrating screen, and the vibrating screen can screen the solid materials conveyed by the scraper conveyor to respectively obtain coarse-grain-size materials and fine-grain-size materials (in the embodiment, the vibrating screen is of a double-layer screen structure and collects the materials according to different grain sizes in a classified manner). The vibrating screen plays a role in screening the particle size of the raw material, and the raw material is respectively obtained into a coarse particle size material and a fine particle size material according to different particle sizes, and then respectively enters a collecting frame of the vibrating screen. Meanwhile, the first conveying device can convey the materials with the first particle size into a spray type leacher of the leaching unit for leaching treatment; the second conveying device can convey the materials with the second particle size into the soaking type leacher of the leaching unit for leaching treatment. In the structure, a solid-phase discharge port of the separator is connected with the vibrating screen, solid-phase materials separated by the separator can be screened through the vibrating screen, oversize products and undersize products of the vibrating screen are respectively connected with the two spiral conveyors through the hoppers, and the spiral conveyors convey the materials to a next-stage unit for processing.
Specifically, the preprocessing unit of the present embodiment involves: 1 scraper conveyer, 2 screw conveyers, 1 separator, 1 vibrating screen and 1 recovery tank.
The design parameters of the parts in the pretreatment unit are as follows:
(1) separating machine
Rotating speed: k = 60-120 r/min, separation type: vertical, structural style: skid-mounted, explosion-proof requirement: integral explosion prevention;
(2) vibrating screen
The aperture of the screen mesh: c =8mm, vibration frequency: k = 240-300 r/min, gradient: r =30 ~ 45 degrees, structural style: skid-mounted, explosion-proof requirement: and (4) integral explosion prevention.
The operation mode of the pretreatment unit is as follows: the operation may be intermittent or continuous for 24 hours, as desired.
In the leaching unit, coarse-grain-size materials enter the spray type leacher through a first conveying device, and fine-grain-size materials enter the soaking type leacher through a second conveying device. In the embodiment, the immersion type leacher adopts a spiral stirrer to assist in quickly stirring, mixing and reacting; the spray type leacher adopts a spiral scraper as a main discharging mode to avoid residual materials. In the structure, aiming at materials with different particle sizes, a corresponding solvent leaching mode is adopted, so that the analysis of the oil phase on the surface of the solid phase is realized, and the purposes of reducing the oil content in the oil-containing solid phase and recycling the oil product are achieved.
In particular, the leaching unit of the present embodiment involves: 1 set of immersion type leacher, 1 set of spray type leacher, 2 screw conveyors and 2 mixing liquid pumps.
The design parameters of the parts of the leaching unit are as follows:
(1) soaking type extractor
Stirring speed: k = 200-600 r/min, number of stirrers: n =2, sidewall inclination angle: r =60 degrees, material form: stainless steel, structural style: skid-mounted, explosion-proof requirement: integral explosion prevention;
(2) spray type leacher:
rotation speed: k =50 ~ 80r/min, spray flow: q =6 ~ 15m3/h, shower head n =20 ~ 35, the gradient: r = 30-45 degrees, blade form: helical scraper blade, material form: stainless steel, structural style: skid-mounted, explosion-proof requirement: and (4) integral explosion prevention.
The operation mode of the leaching unit is as follows: the operation may be intermittent or continuous for 24 hours, as desired.
In the precise desorption unit, a DTDC (direct digital DC) evaporation and desorption mode is adopted, solid-phase rock debris generated by the leaching unit is further dried and heated, the volatile component of the solid-phase rock debris is reduced, the solid-phase rock debris meets the solid waste disposal requirement, and the solvent is further recovered. In this embodiment, liquid phase materials of the spray type extractor and the immersion type extractor enter the centrifuge for centrifugal separation to obtain a centrifugal liquid phase material and a centrifugal solid phase material, respectively. Simultaneously, solid-phase materials discharged from a solid-phase discharge port of the spray type leacher, solid-phase materials discharged from a solid-phase discharge port of the soak type leacher and centrifugal solid-phase materials obtained by separation of a centrifugal machine enter a DTDC desolventizing machine, and are subjected to evaporation and desorption treatment through the DTDC desolventizing machine, and gas-phase materials and dry rock debris are obtained by evaporation and desorption of the DTDC desolventizing machine; and discharging the detritus treated by the DTDC desolventizer through a dry material outlet of the DTDC desolventizer, collecting the detritus by a material collecting device, and treating the detritus according to a law after the detritus is utilized up to the standard. Meanwhile, gas-phase materials obtained by evaporation and desorption of the DTDC desolventizer enter a condensation and solvent recovery unit for treatment.
In particular, the leaching unit of the present embodiment involves: 1 DTDC desolventizing machine, 1 matched air net, 1 scraper conveyor and 3 closed spiral conveyors.
The design parameters of the parts in the precise desorption unit are as follows:
heating the solid to: m1= 75-95 ℃, steam temperature: m2= 120-135 ℃, steam pressure: p = 1.0-2.8 kg, steam density: rho = 650-750 kg/(h.m)2) And a desolventizing layer material layer: h = 500-750 mm, stirring speed: k =10 ~ 12r/min, structural style: skid-mounted, explosion-proof requirement: and (4) integral explosion prevention.
The operation mode of the precise desorption unit is as follows: the operation may be intermittent or continuous for 24 hours, as desired.
In the evaporation unit, a multi-effect evaporation mode is adopted, steam is used for heating, the desorbed medicament mixed liquid is separated, and the desorbed medicament and the oil-based mud are recovered. The centrifugal liquid-phase material obtained by the separation of the centrifugal machine enters a multi-effect evaporation system through a solution pump for evaporation treatment; the gas phase material generated by evaporation enters a condensation and solvent recovery unit through a gas phase outlet of the multi-effect evaporation system; the residue generated after the evaporation of the multi-effect evaporation system is sent into a base oil recovery device, and the residue generated by the multi-effect evaporation system is recovered through the base oil recovery device; the steam generating device is respectively connected with a steam inlet on the multi-effect evaporation system and a steam outlet on the multi-effect evaporation system, hot steam generated by the steam generating device enters the multi-effect evaporation system through the steam inlet of the multi-effect evaporation system, and cold steam of the multi-effect evaporation system returns to the steam generating device through the steam outlet on the multi-effect evaporation system. Meanwhile, hot steam generated by the steam generating device enters the DTDC desolventizer through a steam inlet of the DTDC desolventizer, and cold steam of the DTDC desolventizer enters the steam generating device through a steam outlet of the DTDC desolventizer.
Specifically, the evaporation unit of the present embodiment relates to: 1 set of triple-effect evaporator, 1 solution pump and 1 base oil recovery device.
The design parameters of the partial components in the evaporation unit are as follows:
heating the mixed solution to: t1= 40-60 ℃, and the pH value of the original material is as follows: PH = 7.5-9.5, inlet and outlet temperature of compressor: t2=90/110 ℃, heat exchange area: s = 100-150 m2The evaporator type: forced circulation, structural style: skid-mounted, explosion-proof requirement: and (4) integral explosion prevention.
Operation mode of the evaporation unit: the operation may be intermittent or continuous for 24 hours, as desired.
In the condensation and solvent recovery unit, the function of the refrigerant is utilized to exchange the temperature of the steam in the condensation device, reduce the temperature of the steam, condense and reflux the medicine and achieve the aim of recovering the medicine. Specifically, the buffer pool, the refrigerator and the condenser form a condensation cycle to provide a cold source for the system. Simultaneously, gas-phase materials separated by the DTDC desolventizer and gas-phase materials separated by the multi-effect evaporation system respectively enter a condenser for condensation treatment; after condensation, the recovered solvent obtained can enter a solvent storage tank. And the recycled solvent in the solvent storage tank is respectively returned to the spray type leacher and the soaking type leacher through the solvent pump for leaching treatment, so that the recycling of the solvent is realized.
Specifically, the condensation and solvent recovery unit of the present embodiment involves: 1 set of condenser, 1 circulating water pool, 1 solvent tank, 1 solvent reflux pump and 1 refrigerating machine.
The design parameters of the parts of the condensation and solvent recovery unit are as follows:
condensing deviceType setting: adopt circulating water cooling system, the temperature control scope: q = 5-35 ℃, chilled water capacity: v =18 ~ 22L, chilled water flow: q1=10 ~ 33L/min, pump lift: h = 10-30 m, reflux flow: q2= 6-15 m3H, structural form: skid-mounted, explosion-proof requirement: and (4) integral explosion prevention.
The operation mode of the condensation and solvent recovery unit is as follows: the operation may be intermittent or continuous for 24 hours, as desired.
In this embodiment, a solvent recovery system is provided, and an evaporation unit, a condensation unit, and a solvent recovery unit are provided to recover the desorbed chemical by utilizing the boiling point difference of the mixed solution, with a recovery rate of > 99%. In the application, the whole flow of the oil-based rock debris recycling treatment device adopts micro negative pressure, so that waste gas leakage is avoided; by adopting the method, the solid phase and the liquid phase in the oil-based rock debris can be effectively separated, the separation efficiency is high, and the time consumption is short; the condensation and solvent recovery unit adopts a circulating water cooling mode, so that the capacity and flow of the chilled water are large, and the operation cost is effectively saved; in addition, this application can take away medicament steam to evaporation unit, condensation and solvent recovery unit and condense to retrieve to the solvent storage tank, recycle realizes recovery, the recycle of solvent, has apparent progressive meaning.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A novel oil-based rock debris recycling treatment device is characterized by comprising a pretreatment unit, a leaching unit, a precise desorption unit, an evaporation unit and a condensation and solvent recovery unit;
the pretreatment unit comprises a separator, a scraper conveyor, a vibrating screen, a recovery tank, a first conveying device and a second conveying device, wherein the separator is connected with oil-based rock debris to be treated, the scraper conveyor is connected with the separator and can scrape out solid materials in the separator, a liquid-phase discharge port of the separator is connected with the recovery tank, the liquid-phase materials separated by the separator can return to the recovery tank for recovery, the scraper conveyor is connected with the vibrating screen, the vibrating screen can screen the solid materials conveyed by the scraper conveyor and respectively obtain first particle size materials and second particle size materials, and the vibrating screen is respectively connected with the first conveying device and the second conveying device;
the leaching unit comprises a spray type leaching device, a soaking type leaching device, a third mixed liquid pump and a fourth mixed liquid pump, wherein a feed inlet is formed in the upper part of the spray type leaching device, a liquid sprayer is arranged at the top of the spray type leaching device, a liquid-phase discharge outlet is formed in the lower part of the spray type leaching device, and a solid-phase discharge outlet is formed in the bottom of the spray type leaching device;
the first conveying device is connected with a feed inlet of the spray-type leacher, the first-particle-size materials can enter the spray-type leacher of the leaching unit through the first conveying device for leaching treatment, the third mixed liquid pump is connected with the spray-type leacher, and the third mixed liquid pump can realize circulation of the spray liquid in the spray-type leacher;
one end of a rotary cylinder of the immersion type leacher is provided with a feed inlet, and the other end of the immersion type leacher is provided with a solid phase discharge outlet; the rotary cylinder body of the immersion type leacher is circumferentially provided with a liquid spraying device, and the bottom of the immersion type leacher is provided with a liquid phase discharge hole;
the second conveying device is connected with a feed inlet of the immersion type leacher, materials with second particle sizes can enter the immersion type leacher of the leaching unit through the second conveying device for leaching treatment, the fourth mixed liquid pump is connected with a liquid spraying device of the immersion type leacher and can realize circulation of spraying liquid in the immersion type leacher;
the precise desorption unit comprises a centrifuge and a DTDC desolventizer, wherein the DTDC desolventizer is respectively provided with a matched air net, a feed inlet, a steam outlet, a steam inlet, a gas phase outlet and a dried material outlet, and detritus obtained by treatment of the DTDC desolventizer can be discharged through the dried material outlet;
the liquid phase material discharged from the liquid phase discharge port of the spray type leacher and the liquid phase material discharged from the liquid phase discharge port of the soak type leacher can be centrifugally separated by the centrifugal machine to respectively obtain a centrifugal liquid phase material and a centrifugal solid phase material;
the solid-phase discharge hole of the spray type leacher, the solid-phase discharge hole of the soak type leacher and the centrifugal machine are respectively connected with the feed hole of the DTDC desolventizing machine, and solid-phase materials discharged through the solid-phase discharge hole of the spray type leacher, solid-phase materials discharged through the solid-phase discharge hole of the soak type leacher and centrifugal solid-phase materials obtained by separation of the centrifugal machine can enter the DTDC desolventizing machine for evaporation treatment;
the evaporation unit comprises a solution pump, a multi-effect evaporation system, a base oil recovery device and a steam generation device, wherein the multi-effect evaporation system is respectively provided with a feed inlet, an evaporation residual liquid outlet, a steam inlet, a steam outlet and a gas phase outlet, the feed inlet is positioned at the top of the multi-effect evaporation system, and the evaporation residual liquid outlet is positioned at the bottom of the multi-effect evaporation system;
the centrifugal machine is connected with the solution pump, an outlet of the solution pump is connected with a feed inlet of the multi-effect evaporation system, centrifugal liquid-phase materials obtained by liquid separation of the centrifugal machine can enter the multi-effect evaporation system through the solution pump for evaporation treatment, an evaporation residual liquid outlet of the multi-effect evaporation system is connected with a base oil recovery device, and the base oil recovery device can recover residues generated by the multi-effect evaporation system;
the steam generating device is respectively connected with a steam inlet of the DTDC desolventizing machine and a steam outlet of the DTDC desolventizing machine and can provide steam for the DTDC desolventizing machine; the steam generating device is respectively connected with a steam inlet on the multi-effect evaporation system and a steam outlet on the multi-effect evaporation system and can provide steam for the multi-effect evaporation system;
the condensation and solvent recovery unit comprises a condenser, a refrigerator, a buffer pool and a solvent storage tank, wherein the buffer pool, the refrigerator and the condenser form condensation circulation, and cooling water in the buffer pool can be cooled by the refrigerator and condensed by the condenser for heat exchange in sequence and then returns to the buffer pool for recycling;
the condenser is provided with an air inlet and a liquid outlet respectively, the air inlet of the condenser is positioned at the top of the condenser, and the liquid outlet of the condenser is positioned at the bottom of the condenser; a gas phase outlet of the DTDC desolventizing machine is connected with a gas inlet of the condenser, and gas phase materials separated by the DTDC desolventizing machine can enter the condenser for condensation treatment through the gas phase outlet of the DTDC desolventizing machine; the gas phase outlet of multiple-effect evaporation system links to each other with the air inlet of condenser and the gas phase material of multiple-effect evaporation system separation carries out condensation processing in can getting into the condenser, the liquid outlet of condenser links to each other with the solvent storage tank and in the solvent storage tank can get into the solvent storage tank through the solvent that the condenser condensation produced, the solvent storage tank leaches the ware with the fountain respectively, soaks the formula and leaches the ware and link to each other and the retrieval and utilization solvent in the solvent storage tank can return respectively that the fountain leaches the ware, soaks the formula and leaches and carry out the leaching processing.
2. The device as claimed in claim 1, wherein the vibrating screen is provided with a first hopper and a second hopper, the first hopper is connected with the first conveying device, the first material with the first particle size obtained by screening with the vibrating screen can enter the first hopper and be output through the first conveying device, the second hopper is connected with the second conveying device, and the second material with the second particle size obtained by screening with the vibrating screen can enter the second hopper and be output through the second conveying device.
3. The device according to claim 1, wherein the liquid phase discharge port of the spray extractor is located 0.3-1.5 m above the solid phase discharge port of the spray extractor.
4. The device of claim 1, wherein the leaching unit further comprises a third conveying device and a fourth conveying device, the solid phase discharge port of the spray type leacher is connected with the feed port of the DTDC desolventizer through the third conveying device, and the solid phase discharge port of the soak type leacher is connected with the feed port of the DTDC desolventizer through the fourth conveying device.
5. The apparatus of claim 1, further comprising a fifth conveyor connected to the DTDC desolventizer and capable of outputting the cuttings processed by the DTDC desolventizer.
6. The apparatus of claim 1, further comprising a solvent pump, wherein the solvent storage tank is connected to the spray extractor and the soak extractor respectively through the solvent pump.
7. The apparatus of claim 1, further comprising a material collecting device, wherein the material collecting device is connected with the DTDC desolventizer, and the debris on the DTDC desolventizer can enter the material collecting device for collection.
8. The apparatus according to claim 1, wherein a solvent reflux pump is provided on the pipe of the condensation cycle.
9. The apparatus of any one of claims 1 to 8, wherein the pretreatment unit, the leaching unit, the precision desorption unit, the evaporation unit, the condensation and solvent recovery unit are all one of modular, aboveground and assembled.
10. The device according to any one of claims 1 to 8, further comprising a control system, wherein the pretreatment unit, the leaching unit, the precision desorption unit, the evaporation unit and the condensation and solvent recovery unit are respectively connected with the control system.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117466559A (en) * | 2023-12-28 | 2024-01-30 | 西南石油大学 | Oil-based rock debris-high titanium slag-red mud-based light high-strength baking-free ceramsite and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117466559A (en) * | 2023-12-28 | 2024-01-30 | 西南石油大学 | Oil-based rock debris-high titanium slag-red mud-based light high-strength baking-free ceramsite and preparation method thereof |
| CN117466559B (en) * | 2023-12-28 | 2024-03-08 | 西南石油大学 | Oil-based rock debris-high titanium slag-red mud-based light high-strength baking-free ceramsite and preparation method thereof |
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Effective date of registration: 20220905 Address after: Building 1, No. 9, Xinyuan Avenue, High-tech Zone, Chengdu, Sichuan 610000 Patentee after: Sichuan Intercontinental Huasheng Energy Co.,Ltd. Address before: No.1, 6th floor, building 1, No.9, Xinyuan Avenue, high tech Zone, Chengdu, Sichuan 610000 Patentee before: Intercontinental Strait environmental protection engineering (Chengdu) Co.,Ltd. |