CN112143527A - System and method for treating oil-based rock debris with high-temperature plasma tubular melting furnace - Google Patents
System and method for treating oil-based rock debris with high-temperature plasma tubular melting furnace Download PDFInfo
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- CN112143527A CN112143527A CN202011003732.8A CN202011003732A CN112143527A CN 112143527 A CN112143527 A CN 112143527A CN 202011003732 A CN202011003732 A CN 202011003732A CN 112143527 A CN112143527 A CN 112143527A
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
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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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/12—Heating the gasifier
- C10J2300/123—Heating the gasifier by electromagnetic waves, e.g. microwaves
- C10J2300/1238—Heating the gasifier by electromagnetic waves, e.g. microwaves by plasma
Abstract
The invention relates to a system and a method for treating oil-based rock debris by using a high-temperature plasma tubular melting furnace. The drilling oil-based rock debris pretreatment system is mainly used for pretreating the drilling oil-based rock debris and aims to recover part of mineral oil in the drilling oil-based rock debris; the high-temperature plasma gasification and melting treatment is used for gasifying and melting the dry powder sprayed into the furnace to generate CO + H2A primarily crude synthesis gas and a molten slag; the tail gas treatment system is used for removing water vapor, ash and part of harmful gases in the raw synthesis gas; the slag treating and recovering system includes mainly a chilling device and a chilling chamber, and the slag discharged from the smelting furnace flows into the chilling device to form glass body. The whole system has zero pollution, low seepage, high volume reduction, high strength and high disposal rate in the treatment process.
Description
Technical Field
The invention relates to a treatment system, in particular to a system and a method for treating drilling oil-based cuttings by using a high-temperature plasma tubular melting furnace.
Background
The leaching solution of the oil-based rock debris generated by drilling and production has higher toxicity, and different chemical treatment agents stabilize the bridging structures between various pollutants and inorganic solids in the drill cuttings, so that the component structures of the oil-based rock debris are more complicated, and the process treatment difficulty and the treatment cost are objectively increased. The direct discharge or simple landfill treatment of oil-based detritus can cause serious pollution to soil and underground water, and the drill cuttings can also contain a large amount of pathogenic bacteria, parasites, and heavy metals such as copper, zinc, lead, chromium, mercury and the like, so that the health and ecological environment of human beings are seriously affected, and therefore, a high-efficiency, safe and environment-friendly treatment technology needs to be found out.
The oil-based cuttings treatment technology is various, and several conventional treatment technologies have respective advantages, disadvantages and application ranges (see table 1). Because the components of the oil-based rock debris are complex, no treatment method can treat all types of oil-containing silt, and therefore, the oil-based rock debris is necessarily subjected to classification treatment by adopting an integrated technology. With the increasingly strict and perfect environmental regulations, the harmless, resource and comprehensive utilization treatment technology of the oil-based rock debris will become a necessary trend for the development of the oil-based rock debris treatment technology.
Table 1 comparison of conventional processing techniques
| Processing method | Advantages of the invention | Disadvantages of |
| Curing | Simple process and low cost | The crude oil is not recovered, and the hidden danger of environmental pollution is caused |
| Drying of | The equipment is simple and the crude oil is recovered | Foreign equipment does not rent and sell but only does technical service |
| Pyrolysis of | The crude oil is recovered, and the harmful substances are degraded thoroughly | High equipment energy consumption and high investment |
| Incineration of | The waste is reduced and treated thoroughly | High investment and treatment cost and secondary pollution |
| Physical and chemical separation | The crude oil is recovered, and the energy consumption of equipment is low | Limited separation effect and difficult subsequent water treatment |
| Microbial treatment | Complete degradation and low treatment cost | Long treatment period and large occupied area |
The oil-based rock debris is suitable for a plurality of treatment technologies, and each technology has advantages and disadvantages, so that different treatment technologies are selected according to the specific characteristics of the oil-based rock debris in practical application. When the oil content of the oil-based detritus is high, the oil in the oil-based detritus can be recovered by adopting technical means such as high-temperature cracking, burning, physical and chemical separation and the like, so that the treatment cost is reduced, and certain economic benefit is created; while the oil content is low, the technologies of solidification, desiccation, microbiological treatment and the like can be adopted. The treatment technologies with large investment such as pyrolysis, incineration and the like are suitable for centralized treatment and factory building, and the drying and microbial treatment can be applied to single well treatment.
(2) A single treatment technique may be difficult to meet standard requirements, and thus multiple treatment techniques need to be combined to meet environmental requirements, reduce treatment costs, and increase profitability.
(3) With the increasingly strict and perfect environmental regulations, the harmless, resource and comprehensive utilization treatment technology of the oil-based rock debris will become a necessary trend for the development of the oil-based rock debris treatment technology.
Disclosure of Invention
The invention provides a system for treating drilling oil-based rock debris by using a high-temperature plasma tubular melting furnace, aiming at solving the problems of energy waste, low efficiency and serious environmental pollution of oil-based rock debris treatment equipment or method in the prior art.
In order to achieve the above object, the present invention adopts a technical solution of a system for treating drilling oil-based cuttings with a high temperature plasma tube melting furnace, comprising:
the drilling oil-based detritus pretreatment system comprises a vertical centrifugal machine, a horizontal centrifugal machine, a dryer and a pulverizer which are sequentially connected, wherein the outlet end of the vertical centrifugal machine is connected with the inlet end of the horizontal centrifugal machine, the outlet end of the horizontal centrifugal machine is connected with the inlet of the drying device, the outlet end of the drying device is connected with the inlet end of the pulverizer, and the pulverizer pulverizes the deoiled, dehydrated and dried drilling oil-based detritus into powdery particles;
the high-temperature plasma gasification melting treatment system comprises a high-temperature plasma generator (hereinafter referred to as plasma torches) and a high-temperature plasma tube type melting furnace, wherein a plurality of plasma torches are installed in the high-temperature plasma tube type melting furnace, the plasma torches are arranged on the wall of the melting furnace at intervals, an outlet of a pulverizer is connected with an inlet of the high-temperature plasma tube type melting furnace, a slag discharge port is formed in the bottom end of the high-temperature plasma tube type melting furnace, and an exhaust port is formed in the side wall, close to the bottom end, of the high-temperature plasma tube type melting furnace;
the tail gas treatment system mainly comprises a condenser, a cyclone dust collector, a washing tower and gas power generation equipment, wherein an exhaust port of the high-temperature plasma tubular melting furnace is sequentially connected with the condenser, the cyclone dust collector and the washing tower, an exhaust port of the washing tower is connected with an inlet of the gas power generation equipment, and gas exhausted from the high-temperature plasma tubular melting furnace enters the gas power generation equipment to be combusted and generated;
the slag treatment and recovery system comprises a chilling device and a chilling chamber, wherein chilling water is arranged in the chilling device and the chilling chamber, the chilling device is connected with a slag discharge port at the bottom of the high-temperature plasma tube type melting furnace, and liquid slag generated in the high-temperature plasma tube type melting furnace enters the chilling chamber after passing through the chilling device to form a glass body.
Further, the furnace body of the high-temperature plasma tubular melting furnace is vertically arranged and axially symmetrical, the inlet of the furnace body is arranged at the top end, the plasma torches are perpendicular to the side wall of the furnace body and are arranged up and down to be arranged between the top end and the bottom end of the furnace body at a set interval.
Furthermore, the vertical centrifuge is a vertical centrifugal vertical centrifuge, the horizontal centrifuge is a horizontal centrifugal dehydrator, and the heat of the dryer comes from the gas power generation equipment. The rotating shaft of the vertical centrifuge is vertical to the ground, and the rotating shaft of the bedroom centrifuge is parallel to the ground; the separation efficiency of the two centrifuges is different, the general vertical centrifuges have low rotating speed and low separation efficiency and can only carry out coarse separation, and the horizontal centrifuges have high rotating speed and high separation efficiency and are used for fine separation.
Further, the plasma torches are arranged on the side wall of the furnace body of the high-temperature plasma tube type melting furnace in a crossed and equidistant mode, the plasma torches arranged in the crossed and equidistant mode gradually enable the dry powder to be completely gasified, and solid matters are gradually melted.
Furthermore, the slag treatment and recovery system comprises a chilling device and a chilling chamber, wherein chilling water is arranged in the chilling device and the chilling chamber, the chilling device is connected with a slag discharge port at the bottom of the high-temperature plasma tube type melting furnace, and liquid slag generated in the high-temperature plasma tube type melting furnace enters the chilling chamber through the chilling device to form a glass body.
Furthermore, the chilling chamber is also connected with a circulating water pump and a water supplementing pump, the cooling tower is connected with the chilling chamber through the circulating water pump, and the water supplementing pump is used for supplementing water into the chilling chamber.
Furthermore, the tail gas treatment system comprises a condenser, a cyclone separator, a washing tower and gas power generation equipment, wherein an inlet of the condenser is connected with an exhaust port of the high-temperature plasma tubular melting furnace, and gas exhausted from the high-temperature plasma tubular melting furnace sequentially flows through the condenser, the cyclone separator and the washing tower, is dedusted and washed and then enters the gas power generation equipment to be combusted and generate power.
The invention also relates to a method for treating the drilling oil-based cuttings by using the high-temperature plasma tubular melting furnace, which comprises the following steps
Step 1: sending the collected drilling oil-based rock debris into a vertical centrifuge, separating oil from water by using centrifugal force, and collecting and recycling;
step 2: conveying the drilling oil-based rock debris subjected to primary deoiling and dewatering into a horizontal centrifuge for secondary deoiling and dewatering, and further separating oil and water components;
and step 3: feeding the deoiled and dehydrated drilling oil-based rock debris into a dryer for complete dehydration, so that the drilling oil-based rock debris becomes dry solid;
and 4, step 4: sending the dried drilling oil-based rock debris into a crusher, and crushing the solid oil-based rock debris into dry powder;
and 5: mixing the crushed dry powder product with air, continuously pressing the dry powder into a high-temperature plasma melting furnace by using a nozzle, sequentially passing through a plurality of plasma torches which are arranged in a crossed manner, fully gasifying the dry powder by using high-activity plasmas generated by the plasma torches, and breaking and gasifying most of high-molecular organic compounds in the drilling oil-based cuttings into gas; melting the residual inorganic substances and residual toxic and harmful substances by utilizing the high-temperature characteristic of the plasma torch, chilling the molten slag by a chilling device to form stable inert glass bodies, temporarily storing the stable inert glass bodies in a chilling chamber, and periodically discharging the stable inert glass bodies;
step 6: the generated gas is purified by a tail gas treatment system and then is introduced into gas power generation equipment through a draught fan to be combusted and generate power.
The beneficial effects produced by the invention comprise: the equipment adopts sealing treatment, and the treatment process has zero pollution, low seepage, high volume reduction, high strength and high disposal rate.
The equipment can be disassembled, and if the equipment breaks down, the furnace is shut down to overhaul and replace parts.
The invention can fully utilize the energy generated by the system, and the byproducts can be recycled, thereby greatly reducing the overall energy consumption of the system.
The equipment can run all the day.
The equipment is convenient to transport, has strong emergency capacity and flexible use, and can realize the maximization of the utilization rate of the equipment.
The arrangement positions of different gasifier furnace structures and gasification nozzles determine the flow field structure in the gasification chamber, the characteristics of different flow field structures and the gasification result (mainly referring to the effective gas CO + H after gasification)2The level of the ingredient content) are closely related. Therefore, the furnace structure of the gasification furnace and the arrangement position, the number and the angle of the gasification nozzles are important indexes for distinguishing the characteristics and the performance of the gasification furnace. The tubular melting furnace is a furnace type structure completely different from the traditional Texaco gasification furnace, a channel coal water slurry gasification furnace and a multi-nozzle opposed coal water slurry gasification furnace. The tubular melting furnace has a long and thin tubular structure, N high-temperature plasma torches are vertically and equally arranged on the side wall surface of the furnace, a dry powder injection port is arranged at the top of the furnace, a slag discharge port is arranged at the bottom of the furnace, and a raw gas discharge port is arranged on the side wall close to the bottom of the furnace; its advantages are high heat load of cross-section and volume, and high heat load of oil-base well drilling cuttingsThe dry powder drilling oil-based detritus sprayed from the top nozzle and the elongated flow field formed by the gasifying agent can sequentially pass through a plurality of high-temperature plasma torches, and the activity of plasma generated by the plasma torches and the high-temperature characteristic of the plasma are fully utilized, so that the drilling oil-based detritus is completely gasified and melted at one time. The furnace type structure has great advantages for reducing the power of a single high-temperature plasma torch, so that the power consumption and the power of the whole system can be greatly reduced.
Drawings
FIG. 1 is a schematic structural diagram of a composite system for treating drilling oil-based cuttings by using a high-temperature plasma tubular melting furnace.
FIG. 2 is a flow chart of a high-temperature plasma tube melting furnace composite system for processing drilling oil-based cuttings.
FIG. 3 is a flow chart of a high-temperature plasma tube melting furnace composite system for processing drilling oil-based cuttings.
In the figure: the method comprises the following steps of 1-vertical centrifuge, 2-horizontal centrifuge, 3-dryer, 4-pulverizer, 5-nozzle, 6-high-temperature plasma tube type melting furnace, 7-plasma torch, 8-chilling device, 9-condenser, 10-cyclone separator, 11-washing tower, 12-induced draft fan, 13-gas power generation equipment, 14-chilling chamber, 15-cooling tower, 16-circulating water pump and 17-water replenishing pump.
Detailed Description
The present invention is explained in further detail below with reference to the drawings and the specific embodiments, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
As shown in the attached figure 1, the composite system for treating the drilling oil-based rock debris by the high-temperature plasma tubular melting furnace comprises a treatment system and a control system. The processing system is a main reaction site for melting the drilling oil-based cuttings, simultaneously feeds back data information to the control system for processing, and the control system is connected with the processing system so as to monitor the operation condition and information parameters of the processing system in real time.
The processing system is a main system of a composite system for processing the drilling oil-based cuttings by using the high-temperature plasma tube melting furnace and is also a main reaction site for melting the drilling oil-based cuttings, and the processing system comprises 4 subsystems: the drilling oil-based rock debris pretreatment system, the high-temperature plasma melting system, the slag treatment and recovery system and the tail gas treatment system.
In the drilling oil-based debris pretreatment system, the outlet end of a vertical centrifugal vertical centrifuge (1) is connected with the inlet end of a horizontal centrifugal dehydrator (2), the outlet of the horizontal centrifugal dehydrator (2) is connected with the inlet of a dryer (3), the outlet end of the dryer (3) is connected with the inlet end of a crusher (4), the outlet of the crusher (4) is connected with a nozzle (5), and the outlet end of the nozzle (5) is connected with the inlet end of a high-temperature plasma tubular melting furnace (6); the deoiling and dewatering adopts two-stage separation of a vertical centrifuge and a horizontal centrifuge, so that water and oil components in the oil-based rock debris are separated as far as possible, the post-treatment is convenient, and the energy consumption is reduced. The separated water-oil mixture can be directly used for drilling and can be recycled for many times. The nozzle continuously sprays the drilling oil-based rock debris powder into the high-temperature plasma melting furnace, and a sealing device is arranged at the inlet of the hearth to prevent generated gas from overflowing and scattering from the feed inlet. The upper part of the high-temperature plasma tube type melting furnace is fed by a nozzle, so that the whole hearth is filled with powder, and the entering powder is fully gasified and melted.
The high temperature plasma melting system: 1-n plasma torches (7) are vertically arranged on the side face of the high-temperature plasma tube type melting furnace (6), slag is chilled by a bottom chilling device (8) and then discharged to a chilling chamber (14), and the chilled glass-shaped slag is temporarily stored and recovered;
[1] the outlet end of a chilling chamber (14) in the slag treatment and recovery system is connected with the inlet end of a cooling tower (15), the outlet end of the cooling tower is connected with the chilling chamber (14), a water replenishing pump (17) is arranged at the bottom of the chilling chamber (14), and a circulating water pump (16) is arranged on a pipeline; when the water amount of the cooling water pool is low, the water replenishing pump 17 is started to replenish water to the circulating cooling water system. The cooling tower (15) is a spray cooling tower, but if the work area is located in a water deficient area, the cooling tower may be a dry cooling tower.
[2] The tail gas processing system comprises a condenser (9), a cyclone separator (10), a washing tower (11), gas power generation equipment (13), the outlet end of the condenser (9) is connected with the inlet end of the cyclone separator (10), the outlet section of the cyclone separator (10) is connected with the inlet end of the washing tower (11), the outlet end of the washing tower (11) is connected with the inlet end of the gas power generation equipment (13), an induced draft fan (smoke) is arranged between the washing tower (11) and the gas power generation equipment (13), high-temperature smoke is sent into a dryer (3) to dry drilling oil base rock debris, moisture generated in the drying process is taken away by sprayed dry air, and the whole process is countercurrent heat exchange.
The control system comprises a semi-automatic control mode of an electric appliance control part and a simple mechanical control part, and is used for collecting and processing system information conditions so as to uniformly coordinate the relation among subsystems of the processing system and perform cooperative control.
A process of a composite system for treating drilling oil-based detritus by a high-temperature plasma tubular melting furnace is shown in figure 2, a drilling oil-based detritus pretreatment system is connected with a high-temperature plasma melting system, the high-temperature plasma melting system is respectively connected with a tail gas treatment system and a slag treatment and recovery system, the four systems form the drilling oil-based detritus high-temperature plasma melting treatment system, the control system and the treatment system are connected with each other, the treatment system feeds back data information to the control system, and the control system analyzes and processes signals fed back by a main system to uniformly coordinate the connection among the systems for control.
The flow of the composite system equipment for treating the drilling oil-based rock debris by the high-temperature plasma tubular melting furnace is shown in figure 3, wherein the drilling oil-based rock debris pretreatment system is connected with the high-temperature plasma melting furnace, and the high-temperature plasma melting furnace is connected with another two pieces of treatment equipment: a device connected with slag treatment and recovery, which comprises a chilling device, a chilling chamber and a cooling tower; the other is connected with tail gas treatment equipment which comprises a condenser, a cyclone separator, a washing tower and gas power generation equipment.
The composite system for treating the drilling oil-based cuttings by using the high-temperature plasma tubular melting furnace specifically comprises the following steps:
step 1: and (3) sending the collected drilling oil-based rock debris into a vertical centrifuge, separating most of oil and water in the drilling oil-based rock debris by using centrifugal force, and collecting and recycling the collected drilling oil-based rock debris.
Step 2: conveying the drilling oil-based rock debris subjected to primary deoiling and dehydration into a horizontal centrifuge for secondary deoiling and dehydration, and further separating oil-water components;
and step 3: the deoiled and dehydrated drilling oil-based rock debris is sent into a dryer for further complete dehydration to be changed into solid, so that the solid is convenient to crush;
and 4, step 4: the dried drilling oil-based rock debris is sent into a crusher, and the solid oil-based rock debris is crushed into powder, so that the subsequent high-temperature plasma tubular melting furnace can be more quickly and fully treated, and the energy is saved and the consumption is reduced;
and 5: mixing the pulverized powder with air, continuously pressing mine powder into high temperature plasma melting furnace by using nozzle, sequentially and fully gasifying the mine powder by multiple cross-mounted plasma torches to destroy most toxic and harmful substances in the drilling oil-based detritus, and rapidly gasifying organic part in the drilling oil-based detritus into CO and H2After the inorganic part and the residual toxic and harmful substances are melted, the combustible synthetic gas mainly enters the chilling chamber through the slope runner, flows into the chilling chamber and is cooled to form a glass body with stable inertia.
Step 6: after the drilling oil-based rock debris is thermally cracked in the high-temperature plasma melting furnace, the generated synthesis gas sequentially enters a cyclone separator, a condenser and a washing tower through an exhaust port which is arranged at the bottom of the high-temperature plasma melting furnace to be cooled, dedusted and washed, and the relatively pure H-base rock debris is obtained2And combustible syngas based on CO. The synthetic gas is introduced into the gas power generation equipment through the induced draft fan to be combusted and generated so as to supplement partial power consumption of the system.
And 7: the synthesis gas is combusted and utilized by the gas generator to generate high-temperature flue gas, and the high-temperature flue gas is introduced into the dryer to be used as a heat source of the dryer, so that the energy consumption of the dryer due to electric heating is avoided, and the energy is saved.
Compared with other methods, the composite system for treating the drilling oil-based cuttings by the high-temperature plasma tubular melting furnace has the advantages that:
the composite system for treating the drilling oil-based cuttings by the high-temperature plasma tubular melting furnace can almost completely convert carbon-based wastes in the drilling oil-based cuttings into inert glass bodies and combustible synthetic gas, and is more efficient compared with other technologies.
Compared with the traditional treatment technology, the composite system for treating the drilling oil-based detritus by using the high-temperature plasma tubular melting furnace can completely decompose toxic and harmful substances such as nitric oxide, dioxin and the like in the drilling oil-based detritus, and the toxic and harmful substances in ash slag after the drilling oil-based detritus is melted are melted into harmless and stable inert glass bodies.
Combustible synthesis gas and glass generated by the composite system for treating the drilling oil-based rock debris by using the high-temperature plasma tubular melting furnace can be recycled, and the overall energy consumption of the system is greatly reduced from the energy utilization perspective.
The composite system for treating the drilling oil-based rock debris by the high-temperature plasma tubular melting furnace can greatly reduce the energy consumption of the subsequent high-temperature plasma tubular melting furnace through a series of raw material pretreatment, and improve the efficiency; the plurality of plasma torches horizontally and equidistantly arranged on the side surface of the furnace are fully contacted with the oil-based rock debris powder filled in the furnace chamber, gasification and melting are sequentially carried out, and the oil-based rock debris can be completely treated to the greatest extent.
In conclusion, the composite system for treating the drilling oil-based detritus by the high-temperature plasma tubular melting furnace solves the outstanding problems of resource waste, large occupied area, high cost, low efficiency, environmental pollution and the like in the traditional drilling oil-based detritus treatment mode. The application of the composite system for treating the drilling oil-based rock debris by using the high-temperature plasma tubular melting furnace fundamentally solves the pollution source, the whole system can realize all-weather operation, and the plasma torch can adjust the power according to the load and comprehensively improve the efficiency of the system. The composite system for treating the drilling oil-based cuttings by the high-temperature plasma tubular melting furnace can run at full load in a severe environment, and is more efficient, safer, more reliable and pollution-free compared with other treatment modes.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting of the claimed invention.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the content of the embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the technical scope of the present invention, and any changes and modifications made are within the protective scope of the present invention.
Claims (9)
1. System with oil base detritus is handled to high temperature plasma tubular melting furnace which characterized in that: comprises that
The drilling oil-based detritus pretreatment system comprises a vertical centrifugal machine, a horizontal centrifugal machine, a dryer and a pulverizer which are sequentially connected, wherein the outlet end of the vertical centrifugal machine is connected with the inlet end of the horizontal centrifugal machine, the outlet end of the horizontal centrifugal machine is connected with the inlet of the drying device, the outlet end of the drying device is connected with the inlet end of the pulverizer, and the pulverizer pulverizes the deoiled, dehydrated and dried drilling oil-based detritus into powdery particles;
the high-temperature plasma gasification melting treatment system comprises a high-temperature plasma generator and a high-temperature plasma tube type melting furnace, wherein a plurality of plasma torches are installed in the high-temperature plasma tube type melting furnace, the plasma torches are arranged on the wall of the melting furnace at intervals, an outlet of the pulverizer is connected with an inlet of the high-temperature plasma tube type melting furnace, a slag discharge port is formed in the bottom end of the high-temperature plasma tube type melting furnace, and an exhaust port is formed in the side wall, close to the bottom end, of the high-temperature plasma tube type melting furnace;
the tail gas treatment system mainly comprises a condenser, a cyclone dust collector, a washing tower and gas power generation equipment, wherein an exhaust port of the high-temperature plasma tubular melting furnace is sequentially connected with the condenser, the cyclone dust collector and the washing tower, an exhaust port of the washing tower is connected with an inlet of the gas power generation equipment, and gas exhausted from the high-temperature plasma tubular melting furnace enters the gas power generation equipment to be combusted and generated;
the slag treatment and recovery system comprises a chilling device and a chilling chamber, wherein chilling water is arranged in the chilling device and the chilling chamber, the chilling device is connected with a slag discharge port at the bottom of the high-temperature plasma tube type melting furnace, and liquid slag generated in the high-temperature plasma tube type melting furnace enters the chilling chamber after passing through the chilling device to form a glass body.
2. The system for treating oil-based rock debris with a high temperature plasma tube melter of claim 1 wherein: the furnace body of the high-temperature plasma tubular melting furnace is vertically arranged, the whole furnace body is of a slender tubular structure, the furnace body is axially symmetrical, the plasma torches are perpendicular to the side wall of the furnace body, and the plasma torches are vertically arranged to be arranged between the top end and the bottom end of the furnace body at set intervals.
3. The system for treating oil-based rock debris with a high temperature plasma tube melter of claim 1 wherein: the heat of the dryer comes from the high-temperature flue gas exhausted by the gas power generation equipment.
4. The system for treating oil-based rock debris with a high temperature plasma tube melter of claim 1 wherein: the plasma torches are vertically arranged on the side wall of the furnace body of the high-temperature plasma tubular melting furnace in a crossed and equidistant mode, so that dry powder is completely gasified gradually, and residual ash slag is completely melted gradually.
5. The system for treating oil-based rock debris with a high temperature plasma tube melter of claim 1 wherein: the slag treatment and recovery system comprises a chilling device, a chilling chamber and a cooling tower, wherein the cooling tower cools water in the chilling chamber, and slag discharged from a slag outlet of the high-temperature plasma melting furnace is chilled by the chilling device and then flows into the chilling chamber to form a vitreous body.
6. The system for treating oil-based rock debris with a high temperature plasma tube melter of claim 5 wherein: the chilling chamber is also connected with a circulating water pump and a water replenishing pump, the cooling tower is connected with the chilling chamber through the circulating water pump, and the water replenishing pump is used for replenishing water into the chilling chamber.
7. The system for treating oil-based rock debris with a high temperature plasma tube melter of claim 1 wherein: the tail gas treatment system comprises a condenser, a cyclone separator, a washing tower and gas power generation equipment, wherein the condenser is used for removing water vapor in the raw gas, the cyclone separator is used for gas-solid separation and separating ash carried in the raw gas, an inlet of the condenser is connected with an exhaust port of the high-temperature plasma tubular melting furnace, and gas exhausted from the high-temperature plasma tubular melting furnace sequentially passes through the condenser, the cyclone separator and the washing tower and enters the gas power generation equipment for combustion power generation after dust removal and washing.
8. The system for treating oil-based rock debris with a high temperature plasma tube melter of claim 1 wherein: the high-temperature plasma tubular melting furnace is connected with a nozzle, and dry powder drilling oil-based rock debris crushed by the crusher is sprayed into the high-temperature plasma tubular melting furnace at a high speed through the nozzle.
9. The method for treating the drilling oil-based rock debris by using the high-temperature plasma tubular melting furnace is characterized by comprising the following steps of: comprises the following steps
Step 1: sending the collected drilling oil-based rock debris into a vertical centrifuge, separating oil from water by using centrifugal force, and collecting and recycling;
step 2: conveying the drilling oil-based rock debris subjected to primary deoiling and dewatering into a horizontal centrifuge for secondary deoiling and dewatering, and further separating oil and water components;
and step 3: feeding the deoiled and dehydrated drilling oil-based rock debris into a dryer for complete dehydration, so that the drilling oil-based rock debris becomes dry solid;
and 4, step 4: sending the dried drilling oil-based rock debris into a crusher, and crushing the solid oil-based rock debris into dry powder;
and 5: mixing the crushed dry powder product with air, continuously pressing the dry powder into a high-temperature plasma melting furnace by using a nozzle, sequentially passing through a plurality of plasma torches which are arranged in a crossed manner, and fully gasifying the dry powder product by using high-activity plasma generated by the plasma torches; melting the residual inorganic substances and residual toxic and harmful substances by utilizing the high-temperature characteristic of the plasma torch, chilling the molten slag by a chilling device to form stable inert glass bodies, temporarily storing the stable inert glass bodies in a chilling chamber, and periodically discharging the stable inert glass bodies;
step 6: the generated gas is purified by a tail gas treatment system and then is introduced into gas power generation equipment through a draught fan to be combusted and generate power.
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| CN202011003732.8A CN112143527A (en) | 2020-09-22 | 2020-09-22 | System and method for treating oil-based rock debris with high-temperature plasma tubular melting furnace |
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| CN202011003732.8A CN112143527A (en) | 2020-09-22 | 2020-09-22 | System and method for treating oil-based rock debris with high-temperature plasma tubular melting furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112587851A (en) * | 2020-12-14 | 2021-04-02 | 合肥工业大学 | Device and method for treating oil-based drilling cuttings by using plasma |
| CN114951210A (en) * | 2022-05-27 | 2022-08-30 | 常州大学 | Energy vehicle system for treating oil-based rock debris and energy vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108129041A (en) * | 2017-12-29 | 2018-06-08 | 嘉华特种水泥股份有限公司 | Utilize the preparation method of oil base well drilling detritus burning silicate cement clinker |
| CN111394110A (en) * | 2019-01-03 | 2020-07-10 | 四川天法科技有限公司 | Novel oil-based detritus treatment facility |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108129041A (en) * | 2017-12-29 | 2018-06-08 | 嘉华特种水泥股份有限公司 | Utilize the preparation method of oil base well drilling detritus burning silicate cement clinker |
| CN111394110A (en) * | 2019-01-03 | 2020-07-10 | 四川天法科技有限公司 | Novel oil-based detritus treatment facility |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112587851A (en) * | 2020-12-14 | 2021-04-02 | 合肥工业大学 | Device and method for treating oil-based drilling cuttings by using plasma |
| CN114951210A (en) * | 2022-05-27 | 2022-08-30 | 常州大学 | Energy vehicle system for treating oil-based rock debris and energy vehicle |
| CN114951210B (en) * | 2022-05-27 | 2024-03-12 | 常州大学 | Energy vehicle system and energy vehicle for treating oil-based rock debris |
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Application publication date: 20201229 |