An environment-friendly treatment device and treatment method for oil drilling waste mud

Abstract

The application discloses an environment-friendly treatment equipment and treatment method for oil drilling waste mud, which comprises a heat preservation frame, a heat preservation cabinet is arranged at the top of the heat preservation frame, a reaction treatment cylinder for reaction treatment of the mud is arranged in the heat preservation cabinet, a heating mechanism for heating the reaction treatment cylinder is arranged in the heat preservation frame, a discharge accelerating mechanism for accelerating the discharge of water vapor in the mud in the reaction treatment cylinder is arranged in the heat preservation cabinet, a top frame is arranged at the top of the heat preservation cabinet, a through pipe is arranged on the top frame, one end of the through pipe penetrates into the heat preservation cabinet and is connected with a gland, and the gland covers the top of the reaction treatment cylinder. The oil quality in the mud can be effectively reduced, the influence of drying and dehydration on the oil quality is reduced, the mud and the flocculating powder are accelerated to be held and precipitated, the oil quality layer is beneficial to float, the flocculating powder is more effectively mixed with the mud, compared with the addition of the flocculating liquid agent mixed with water, the dehydration amount and the dehydration difficulty are reduced, and the heating time is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of oil drilling waste treatment, and particularly relates to an oil drilling waste mud environment-friendly treatment equipment and a treatment method. BACKGROUND

[0002] In the process of oil drilling, a large amount of mud is brought to the ground due to the scouring of drilling fluid into the borehole and the continuous exploration and pulling out of the drill pipe in the borehole. Since the oil content in the mud is generally high, if it is directly discarded, a large amount of resources will be wasted, and if the mud with high oil content is directly buried in the soil, the agricultural value of the land will be directly reduced. Since the mud is mixed with stones, sand and water, it cannot be directly recycled, and therefore needs to be treated with a treatment equipment.

[0003] A common treatment equipment is a centrifugal separation method, that is, the sand and stones in the mud are first separated through primary screening, and then the oil and water are separated by a spiral centrifugal mechanism, which has high efficiency, but the separated oil contains a large amount of impurities. Another kind usually needs to mix the flocculant with the mud to make the sand in the mud flocculate and precipitate, and then remove the water in the mud by drying to separate the oil, water and impurities in the mud.

[0004] The Chinese invention patent with the application publication number CN115162983A adopts the second kind, which discloses an oil drilling waste mud environment-friendly treatment equipment and a treatment method, which comprises a plurality of support plates fixedly installed on the outer surface of the bottom end of the cylinder, and a support leg fixedly installed at the bottom of the support plate. It also comprises: a feeding assembly for conveying waste mud into the cylinder, which is installed on the top of the cylinder; a first-stage shearing assembly for crushing the waste mud flowing in the feeding assembly, which is installed on the feeding assembly; a second-stage shearing assembly for crushing the waste mud flowing into the cylinder, which is installed on the inner wall of the top end of the cylinder; a conveying assembly for conveying the treatment agent into the waste mud, which is installed on the side wall of the middle end of the cylinder; a stirring assembly for mixing the treatment agent and the waste mud, which is installed on the inner wall of the middle end of the cylinder; a dehydration assembly for dehydrating the mixed waste mud, which is installed on the inner wall of the bottom end of the cylinder; and a drying assembly for drying the dehydrated waste mud, which is installed on the dehydration assembly.

[0005] That is, the first and second shearing assemblies are used to shear the mud, so as to realize double crushing of the mud, the treatment agent mixed by the flocculating agent and water is added to the crushed mud by the conveying assembly, the treatment agent and the mud are fully mixed by the stirring assembly, and then the mixture is filtered by the second filter screen, the filtered mixture is squeezed and dewatered by the dewatering assembly, and finally the dewatered mud mixture is dried by the drying assembly, so as to realize the separation of water and silt.

[0006] However, after the multiple crushing of the mud, the water-mixed flocculating agent is added, and the conditions for direct flocculation and sedimentation are not obtained, but direct stirring is performed, although the flocculating agent and the sand particles can be accelerated to form a ball during the stirring process, but the mud, oil and water in the mud are also rolled over, so that the oil and the silt are not separated by layers, but are mixed together; and then the squeezing and drying are performed, since the oil itself blocks the voids of the silt, the influence of the oily mud on the drying itself is ignored, although the squeezing and dewatering are performed, but during the drying process, the water vapor generated by the heating of the silt blocked by the oil is not easy to separate, in addition, in order to make the flocculating agent more easily mixed with the mud, the treatment liquid agent is prepared by pre-adding water, but this method undoubtedly increases the dewatering amount and time of the squeezing and drying, and increases the dewatering difficulty; and the oil itself is heated, and the oil with short hydrocarbon chain length is directly evaporated with the increase of the drying heating time, and the useful oil in the oil is wasted during the recovery process.

[0007] Therefore, it is necessary to provide a treatment device and method which has good flocculation and layering effects, can effectively reduce the dewatering difficulty, and can realize more effective separation and recovery of oil and silt in the mud, so as to meet the basic needs. SUMMARY

[0008] The present application aims to provide an oil drilling waste mud environmental protection treatment device and method to solve the problems in the prior art.

[0009] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an oil drilling waste mud environmental protection treatment device, comprising a heat preservation frame, a heat preservation cabinet is arranged at the top of the heat preservation frame, a reaction treatment cylinder for reaction treatment of the mud is arranged in the heat preservation cabinet, a heating mechanism for heating the reaction treatment cylinder is arranged in the heat preservation frame, a promoting discharge mechanism for accelerating the discharge of water vapor in the mud in the reaction treatment cylinder is arranged in the heat preservation cabinet, a top frame is arranged at the top of the heat preservation cabinet, a through pipe is arranged on the top frame, one end of the through pipe penetrates into the heat preservation cabinet and is connected with a gland, and the gland covers the top of the reaction treatment cylinder;

[0010] In order to mix the flocculating agent and the slurry fully, a stirring mechanism is arranged on the top of the inlet pipe for adding the flocculating agent and the slurry and for mixing the flocculating agent and the slurry efficiently.

[0011] In order to realize the dehydration of the slurry in the reaction treatment cylinder by heating, preferably, the heating mechanism comprises a base arranged in the heat preservation frame, a heating plate is arranged on the base and the upper surface of the heating plate is in contact with the lower surface of the reaction treatment cylinder.

[0012] In order to reduce the influence of the slurry itself on the dehydration, preferably, the drainage promoting mechanism comprises a shock absorbing frame arranged on both sides of the rear part of the reaction treatment cylinder, the outer wall of the shock absorbing frame is uniformly provided with convex rings, a support spring is symmetrically arranged in the rear part of the heat preservation cabinet, the front part of the support spring is connected with a shock absorbing plate, shock strips are connected on both sides of the shock absorbing plate and inserted into the shock absorbing frame, and a vibration exciter is arranged on the shock absorbing plate.

[0013] In order to take out the reaction treatment cylinder after the slurry is treated and to ensure that the reaction treatment cylinder is in a relatively stable state during the treatment process, preferably, a handle is arranged on the front part of the reaction treatment cylinder, a material port is arranged on the front part of the heat preservation cabinet, and a sealing cabinet door is arranged on the material port, when the sealing cabinet door is closed, the handle is supported on the sealing cabinet door.

[0014] In order to know the height of the slurry in the reaction treatment cylinder in real time during the actual adding of the slurry into the reaction treatment cylinder, preferably, a level detector for detecting the height of the slurry is arranged on one side of the pressure cover, and the transmission line of the level detector is connected with an external computer.

[0015] In order to avoid the condensation of water vapor in the reaction treatment cylinder and to accelerate the drainage of the water vapor, preferably, the drainage promoting mechanism further comprises an air vent arranged on one side of the top of the top frame, a cover is arranged on the inner top of the top frame and the air vent is in communication with the cover, an air suction pump is connected to the bottom of the cover, the air suction pipe of the air suction pump is connected to the pressure cover and is in communication with the reaction treatment cylinder, and a connecting pipe for connecting an air exhaust hose is connected to one side of the upper surface of the top frame and is in communication with the air vent.

[0016] In order to scatter the flocculating agent into the slurry effectively and to avoid that larger particle impurities in the slurry enter into the reaction treatment cylinder, preferably, the stirring mechanism comprises a stirring cylinder connected to the top of the inlet pipe and in communication with the inlet pipe, the both ends of the stirring cylinder are provided with sealing plates, a motor is arranged on one of the sealing plates, the rotor shaft of the motor penetrates through the sealing plate into the stirring cylinder and is connected with a rotating plate, and rotating blades are uniformly arranged on the rotating plate in a ring shape.

[0017] Another side of the sealing plate is provided with a powder spraying pipe, one end of the powder spraying pipe is inserted into the stirring cylinder and connected with a spraying box, the spraying box is communicated with the powder spraying pipe, the bottom of the powder spraying pipe is provided with a spraying port, the top of the stirring cylinder is provided with a feeding hopper communicated with the stirring cylinder, the top of the spraying box is provided with a scraping blade for scraping the mud attached to the spiral blade, one end of the powder spraying pipe is connected with a butterfly valve, the inlet end of the butterfly valve is connected with a powder gas conveyor, and the suction end of the powder gas conveyor is connected with a powder pipe inserted into a flocculating agent packaging bag.

[0018] In order to accelerate the mud in the feeding hopper into the reaction treatment cylinder, preferably, the top of the top frame is provided with a plug pressing mechanism for plugging the mud in the feeding hopper into the stirring cylinder, the plug pressing mechanism comprises a gas cylinder arranged on the top frame, the top rod of the gas cylinder is connected with a top plate, one side of the bottom of the top plate is provided with a pressing column, the bottom of the pressing column is connected with a lower pressing plate, and the bottom of the lower pressing plate is connected with a pressing plug.

[0019] In order to cooperate with the above-mentioned oil drilling waste mud environmental protection treatment equipment, efficiently treat mud, a treatment method for treating waste mud by using the oil drilling waste mud environmental protection treatment equipment is provided, comprising the following steps:

[0020] Step one: the mud is coarsely screened by a sieve plate, and is added into a sedimentation tank for initial layering and water removal, and then an appropriate amount of flocculating agent is prepared for standby;

[0021] Step two: the powder pipe is inserted into the flocculating agent bag, the plug pressing mechanism is started, the mud is continuously added into the feeding hopper, and the stirring mechanism is started;

[0022] Step three: when the mud height in the reaction treatment cylinder meets the treatment requirement detected by the level detector, the plug pressing mechanism and the stirring mechanism are closed, and the promoting drainage mechanism is started;

[0023] Step four: after the promoting drainage mechanism runs for not less than minutes, the heating mechanism is started, heating is performed until no obvious water vapor is discharged, the promoting drainage mechanism is closed, and after a delay of not less than minutes, the heating mechanism is closed;

[0024] Step five: the sealing cabinet door is opened, and the reaction treatment cylinder is pulled out from the heat preservation cabinet through the handle;

[0025] Step six: the upper oil layer of the reaction treatment cylinder is scraped off by a scraper, and the oil layer is collected in an oil collection cylinder; the middle layer flocculating material of the reaction treatment cylinder is scraped off, and the flocculating material is collected in a flocculating material collection cylinder; and the remaining mud and sand particles in the reaction treatment cylinder are poured out and concentrated and stacked together.

[0026] Compared with the prior art, the beneficial effects of the present application are:

[0027] The present application relates to an oil drilling waste mud environmental protection treatment equipment:

[0028] Stirring mechanism: The mud is filtered by the uniformly arranged rotating blades, avoiding large clumps and stones from entering the reaction processing cylinder. Under the action of the rotating blades, the mud is quickly cut and thrown into the space between the rotating blades. The flocculating agent powder is quickly sucked by the powder gas conveyor, discharged into the spray box through the powder spray pipe, and sprayed out of the nozzle at a large angle, thereby quickly combining with the mud cut and broken by the rotating blades. The broken mud combined with the flocculating agent powder is rolled and combined with other mud, which is beneficial to the uniform mixing of the flocculating agent and the mud. When the mud enters the inlet pipe, it is further cut by the lower rotating blades and covered by the flocculating agent powder sprayed from the nozzle. The broken mud is further held by the flocculating agent and enters the reaction processing cylinder, which is blocked by the flocculating agent, reducing the efficiency of the oil layer and the sand in the reaction processing cylinder. Not only does it improve the flocculating agent and sand holding degree in the reaction processing cylinder, but also improves the water vapor discharge degree from the mud in the drying process, improving the drying effect of the mud;

[0029] Heating mechanism and promoting discharge mechanism: When the exciter is running, the high-frequency vibration is quickly transmitted to the shock strip through the shock plate, and then transmitted to the shock frame through the shock strip. Under the influence of high-frequency vibration on the surface of the shock frame, in addition to accelerating the flowability of various particles in the mud and speeding up the flocculating agent and sand holding precipitation, the high-frequency vibration makes the contact area between the shock frame and the mud maintain a liquid layer gap. Under the action of the convex ring, the blockage surface of the oil and sand combined with the shock frame is destroyed, and the static layer between the layers is also destroyed, which is beneficial to the separation of sand and oil. Due to the shock transmission of the counterweight frame to the reaction processing cylinder, when the mud is heated, the water vapor generated in the mud will not only come out from the upper layer of the mud, but also be discharged in large quantities from the gap between the mud and the shock frame and the gap between the mud and the inner wall of the reaction processing cylinder, effectively reducing the influence of oil on the water vapor discharge in the mud. In addition, when the air pump is running, the water vapor in the reaction processing cylinder can be discharged quickly to prevent water droplets from condensing in the reaction processing cylinder and returning to the reaction processing cylinder. The short hydrocarbon chain oil can also be extracted through the exhaust hose and the condensation cooling tower.

[0030] Plug pressure mechanism: During the repeated extension and retraction of the top rod of the air cylinder, the pressure plug is repeatedly inserted and pulled out of the feeding hopper. When the mud is added to the feeding hopper, the mud can be quickly discharged into the stirring cylinder, the extrusion force is applied, the mud is quickly discharged through the rotating rotating blades, and the mud is quickly discharged into the reaction processing cylinder through the inlet pipe, improving the processing efficiency of the mud.

[0031] Further, the oil quality in the mud can be effectively reduced, the influence of drying and dehydration is reduced, the sand and flocculating powder are accelerated to deposit, the oil quality is beneficial to float, the flocculating powder is mixed with the mud more effectively, compared with the flocculating liquid agent mixed with water, the dehydration amount and difficulty are reduced, and the heating time is reduced.

[0032] The application relates to a treatment method for treating waste mud by using an oil drilling waste mud environment-friendly treatment equipment, and can efficiently use the oil drilling waste mud environment-friendly treatment equipment, can effectively separate oil quality, water and impurities such as sand, realizes gas-solid oil quality recovery, and is convenient to implement. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a whole structure schematic diagram of the application;

[0034] Figure 2 It is a front view schematic diagram of the application;

[0035] Figure 3 It is Figure 2 A-A sectional view schematic diagram;

[0036] Figure 4 It is Figure 2 A partial sectional view schematic diagram;

[0037] Figure 5 It is a stirring barrel connection amplification structure schematic diagram of the application;

[0038] Figure 6 It is a spraying box connection amplification structure schematic diagram of the application;

[0039] Figure 7 It is a plug pressure mechanism amplification structure schematic diagram of the application.

[0040] In the drawing: 1 is a heat preservation frame, 2 is a base, 3 is a heating plate, 4 is a heat preservation cabinet, 5 is a reaction treatment cylinder, 6 is a shock absorbing frame, 7 is a supporting spring, 8 is a shock absorbing plate, 9 is a shock strip, 10 is a vibration exciter, 11 is a handle, 12 is a sealing cabinet door, 13 is a top frame, 14 is a inlet pipe, 15 is a pressure cover, 16 is a material level detector, 17 is a gas permeation hole, 18 is a cover, 19 is an air pump, 20 is a connecting pipe, 21 is a stirring barrel, 22 is a sealing plate, 23 is a motor, 24 is a rotating plate, 25 is a rotating piece, 26 is a powder spraying pipe, 27 is a spraying box, 28 is a spraying port, 29 is a feeding hopper, 30 is a scraping piece, 31 is a butterfly valve, 32 is a powder gas conveyor, 33 is a powder pipe, 34 is a gas cylinder, 35 is a top plate, 36 is a pressure column, 37 is a lower pressing plate, and 38 is a plug. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0042] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , an oil drilling waste mud environmental protection treatment equipment includes a heat preservation frame 1, a heat preservation cabinet 4 is bolted on the top of the heat preservation frame 1, a reaction treatment cylinder 5 for reacting and treating the mud is put into the heat preservation cabinet 4, a heating mechanism for heating the reaction treatment cylinder 5 is arranged in the heat preservation frame 1, the heat preservation frame 1 and the heat preservation cabinet 4 are respectively used for isolating the heating mechanism and the reaction treatment cylinder 5 from the external environment, so as to reduce heat loss, a discharge promoting mechanism for accelerating the discharge of water vapor in the mud in the reaction treatment cylinder 5 is arranged in the heat preservation cabinet 4, a top frame 13 is bolted on the top of the heat preservation cabinet 4, a through pipe 14 is arranged through the middle of the top frame 13, the lower end of the through pipe 14 penetrates into the heat preservation cabinet 4 and is integrally provided with a gland 15, and the gland 15 covers the top of the reaction treatment cylinder 5, so as to avoid the water vapor in the reaction treatment cylinder 5 from entering the top frame 13.

[0043] The top of the through pipe 14 is provided with a stirring mechanism, and the stirring mechanism is used for adding a flocculating agent and the mud and for efficient mixing of the flocculating agent and the mud.

[0044] In order to further better realize the performance of the above mechanism, the following embodiments are provided.

[0045] Embodiment one:

[0046] Referring to Figure 3 and Figure 4 , the heating mechanism includes a base 2 embedded in the heat preservation frame 1, the base 2 is made of heat insulation concrete, a heating plate 3 is inserted into a slot arranged on the base 2, the heating plate 3 is flush with the upper plate surface of the heat preservation frame 1, and the heating surface on the upper surface of the heating plate 3 is in contact with the lower surface of the reaction treatment cylinder 5; when the heating plate 3 operates, the mud in the reaction treatment cylinder 5 is heated; in addition, the power supply line of the heating plate 3 penetrates out of the heat preservation frame 1 and is connected to the power output end of an external temperature controller, and the power input end of the external temperature controller is connected to an external power supply through a cable.

[0047] Referring to Figure 3 and Figure 4The promoting and discharging mechanism comprises two seamless and welded shock-absorbing frames 6 with the same height as the reaction processing cylinder 5 on the two sides of the rear part of the reaction processing cylinder 5, the shock-absorbing frames 6 are U-shaped plates with a thickness of 3 mm, the outer walls of the shock-absorbing frames 6 are uniformly provided with convex rings, the two ends of the supporting spring 7 are fused with fixing seats, the fixing seats of the supporting spring 7 are bolted and fixed on the shock-absorbing plates 8, the shock-absorbing plates 8 are welded with shock strips 9 on the left and right sides and the shock strips 9 are slidably inserted into the shock-absorbing frames 6, the shock-absorbing plates 8 are further bolted with a vibration exciter 10, the power line of the vibration exciter 10 is drawn out of the top frame 13 and connected with the lower post of the external knife switch wiring, the upper post of the knife switch wiring is connected with the external power line through a cable.

[0048] The supporting spring 7 is used for elastically supporting the shock strip 9 to keep it inserted into the shock-absorbing frame 6, when the vibration exciter 10 operates, high-frequency vibration is quickly transmitted to the shock strip 9 through the shock-absorbing plate 8, and then the high-frequency vibration is transmitted to the shock-absorbing frame 6 through the shock strip 9, under the influence of the high-frequency vibration on the surface of the shock-absorbing frame 6, in addition to accelerating the flowability of various plasm in the mud and accelerating the flocculating agent to hold and deposit with the silt, the high-frequency vibration makes the liquid layer gap in the contact area between the shock-absorbing frame 6 and the mud, under the action of the convex ring, the clogging surface of the oil quality combined with the silt in contact with the shock-absorbing frame 6 is destroyed, and the static layer between the layers is also destroyed, which is beneficial to the stripping of the silt and the oil quality, and due to the shock transmission of the shock-absorbing frame 6 to the reaction processing cylinder 5, when the mud is heated, in addition to the water vapor in the mud rising from the upper layer, a large amount of water vapor is also discharged from the gap between the mud and the shock-absorbing frame 6 and the gap between the mud and the inner wall of the reaction processing cylinder 5, which effectively reduces the influence of the oil quality on the discharge of the water vapor in the mud.

[0049] Referring to Figure 1 , Figure 2 and Figure 4 , the promoting and discharging mechanism further comprises an air vent 17 arranged on the right side of the top of the top frame 13, a cover 18 is seamlessly welded on the inner top of the top frame 13 and the air vent 17 is communicated with the cover 18, the bottom of the cover 18 is connected with the exhaust end of an air pump 19 through a joint, the power line of the air pump 19 is drawn out of the top frame 13 and connected with the lower post of the external circuit breaker wiring, the upper post of the circuit breaker is connected with the external power line, the air pump 19 is connected with the pressure cover 15 through a joint and communicated with the inside of the reaction processing cylinder 5, and a connecting pipe 20 for connecting the exhaust hose is seamlessly welded on the upper side of the top frame 13 and communicated with the air vent 17.

[0050] When the air pump 19 operates, the water vapor in the reaction processing cylinder 5 can be accelerated to be discharged, so as to prevent the water vapor from condensing into water droplets and returning to the reaction processing cylinder 5;

[0051] In addition, the exhaust hose is interference fitted with the connecting pipe 20 and is tightened by a throat clamp. The outer surface of the exhaust hose is wrapped with 5 cm of thermal insulation cotton to ensure the thermal insulation of the inner wall of the exhaust hose. Considering that the oil product with a short hydrocarbon chain will be gasified when the temperature exceeds 100 degrees Celsius, the exhaust hose is connected to an external condensation cooling tower for cooling. The condensed water is collected at the bottom of the cooling tower, and the oil gas is condensed into an oil layer floating on the water surface. The oil product is released from the lower layer of the cooling tower and is stored in a storage tank for further oil product refining.

[0052] Referring to Figure 1 , Figure 2 and Figure 3 , the front part of the reaction treatment cylinder 5 is bolted with a handle 11 on both sides, and the front part of the thermal insulation cabinet 4 is provided with a feeding port. The feeding port is hingedly connected with a sealing cabinet door 12. A handle lock and a lock sleeve are respectively installed on the sealing cabinet door 12 and the edge of the feeding port to realize the closure of the sealing cabinet door 12. In addition, a sealing ring strip is installed on the rear edge of the sealing cabinet door 12. Therefore, when the sealing cabinet door 12 is locked, the sealing ring strip is pressed tightly at the feeding port by the sealing cabinet door 12 to ensure the sealing performance of the sealing cabinet door 12 on the feeding port. When the sealing cabinet door 12 is closed, the handle 11 is supported on the sealing cabinet door 12. Therefore, when the vibration exciter 10 operates, the sealing cabinet door 12 can effectively support the reaction treatment cylinder 5.

[0053] Referring to Figure 4 , a plastic steel mud is used to fix a level detector 16 for detecting the height of the mud in the installation port on the left side of the gland 15. The transmission line of the level detector 16 is connected with an external computer.

[0054] The level detector 16 is used to transmit the data of the height of the mud to the external computer in real time during the process of adding the mud into the reaction treatment cylinder 5. Therefore, the data of the height of the mud in the external computer is observed to facilitate the control of the height of the mud added into the reaction treatment cylinder 5.

[0055] Since some stones or lumps still exist in the mud after the initial screening, it is not conducive to the heating and flocculation operation in the reaction treatment cylinder. In order to enable the dry powder flocculant to be efficiently mixed with the mud and discharged into the reaction treatment cylinder 5, and to accelerate the entry of the mud into the stirring cylinder 21, the following embodiments are provided based on the above.

[0056] Embodiment Two:

[0057] Referring to Figure 1 , Figure 2 , Figure 4 and Figure 5The stirring mechanism comprises a flange-connection stirring cylinder 21 which is connected to the top of the inlet pipe 14 and communicates with the inlet pipe 14, both ends of the stirring cylinder 21 are fixed with cover plates 22 by annular bolts, the left cover plate 22 is bolted with a motor 23, the rotor shaft of the motor 23 penetrates the cover plate 22 to the inside of the stirring cylinder 21 and is connected to the center of a rotating plate 24 by interference key, the rotating plate 24 is uniformly welded with rotating blades 25 around the circumference;

[0058] The maximum gap between the adjacent rotating blades 25 is 5mm, so when the mud falls from the top of the stirring cylinder 21, the mud is filtered by the uniformly distributed rotating blades 25, so that the large lumps and stones are prevented from entering the space between the rotating blades 25 and falling into the reaction processing cylinder 5, and the lumps and stones retained in the feeding hopper 29 can be cleaned regularly, while the mud passing through the gap of the upper rotating blades 25 will enter the space between the rotating blades 25.

[0059] When the motor 23 operates, the rotating plate 24 is driven to rotate, and the rotating blades 25 rotate with it, when the mud falls into the space between the rotating blades 25, the mud is quickly cut by the rotating blades 25 and is thrown to the space between the rotating blades 25;

[0060] Referring to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 , the center hole of the right cover plate 22 is seamlessly welded with a powder spraying pipe 26, one end of the powder spraying pipe 26 is inserted into the stirring cylinder 21 and is welded with a spraying box 27, the spraying box 27 communicates with the powder spraying pipe 26, the bottom of the powder spraying pipe 26 is provided with a spraying opening 28 which is a 270-degree arc-shaped opening, when the powder spraying pipe 26 sprays the flocculating agent powder into the spraying box 27, the flocculating agent powder is sprayed at a large angle through the spraying opening 28; the top of the stirring cylinder 21 is seamlessly welded with a feeding hopper 29 which communicates with the stirring cylinder 21, the feeding hopper 29 is arranged to add mud into the stirring cylinder 21; the top of the spraying box 27 is welded with a scraping blade 30 which is used to scrape the mud adhered to the rotating blades 25, the upper end of the scraping blade 30 is 2mm away from the topmost rotating blade 25, if the mud is retained between the rotating blades 25 and does not continue to fall, the scraping blade 30 can scrape the mud which does not separate from the rotating blades 25; the right end of the powder spraying pipe 26 is connected with the discharge end of a butterfly valve 31 by a screw connection, the inlet end of the butterfly valve 31 is connected with the powder discharge end of a powder gas conveying machine 32 by a double-head screw connection, and the material suction end of the powder gas conveying machine 32 is connected with a powder pipe 33 which is used to insert into the flocculating agent packaging bag by a screw connection, one end of the powder pipe 33 is connected with a hose which is used to punch into the flocculating agent packaging bag at various angles.

[0061] The butterfly valve 31 is opened, and the power of the powder gas conveyor 32 is turned on. The flocculant powder is sucked by the powder gas conveyor 32, discharged into the spray box 27 through the powder spray pipe 20, and sprayed out from the large-angle nozzle 28, so as to be quickly combined with the mud broken by the rotary blade 25. The broken mud combined with the flocculant powder is rolled under the action of the rotary blade 25 and combined with other mud, which is beneficial to the uniform mixing of the flocculant powder and the mud.

[0062] When the mud enters the inlet pipe 14, it is also cut by the lower rotary blade 25 and covered by the flocculant powder sprayed out from the nozzle 28. The broken mud is further subjected to the flocculant hoop and enters the reaction treatment cylinder 5, which is blocked by the flocculant powder, thereby reducing the efficiency of the oil layer and the silt in the reaction treatment cylinder 5. The degree of flocculant and silt in the mud is improved, and the degree of water vapor discharge from the mud in the drying process is improved, thereby improving the drying effect of the mud.

[0063] Referring to Figure 1 、 Figure 2 、 Figure 4 and Figure 7 , the top of the top frame 13 is provided with a plug pressing mechanism for pressing the mud in the feeding hopper 29 into the stirring cylinder 21. The plug pressing mechanism includes a gas cylinder 34 fixed on the upper rear side of the top frame 13. The gas cylinder 34 is a bidirectional type. The gas inlet end and the gas outlet end of the gas cylinder 34 are connected to the gas connection end of one side of an electromagnetic reversing valve through a gas conveying pipe. The electromagnetic reversing valve is a three-position four-way type. The other side of the gas connection end of the electromagnetic reversing valve is connected to the exhaust end of an external compression gas pump through a gas pipe. The gas position control connection end of the electromagnetic reversing valve is connected to the control input end of an external PLC controller through a cable. The two gas position reversing cycle times of the gas cylinder 34 are set to 1 second. When the setting of the PLC controller is started, the top rod of the gas cylinder 34 is repeatedly extended and retracted. The top rod of the gas cylinder 34 is fixed on the top of the top plate 35 by bolts. The bottom front side of the top plate 35 is fixed on the pressure column 36 by bolts. The bottom of the pressure column 36 is fixed on the lower pressing plate 37 by bolts. The bottom of the lower pressing plate 37 is bonded with the pressure plug 38. The material of the pressure plug 38 is neoprene. The pressure plug 38 can be in soft contact with the inner wall of the circular pipe of the feeding hopper 29. When the top rod of the gas cylinder 34 is extended to the maximum length, the pressure plug 38 is completely separated from the feeding hopper 29. When the top rod of the gas cylinder 34 is retracted to the shortest length, the pressure plug 38 can be inserted into the bottom of the feeding hopper 29.

[0064] During the repeated extension and retraction of the top rod of the gas cylinder 34, the pressure plug 38 is repeatedly inserted and pulled out of the feeding hopper 29. After the mud is added into the feeding hopper 29, the mud can be accelerated to enter the stirring cylinder 21, the extrusion pressure is applied, the mud is accelerated to pass through the rotary blade 25, and then the mud is accelerated to pass through the inlet pipe 14 and discharge into the reaction treatment cylinder 5, thereby improving the treatment efficiency of the mud.

[0065] In order to more effectively utilize the above treatment equipment to treat the oil drilling waste mud, the following treatment method is provided:

[0066] A treatment method for treating waste mud using an oil drilling waste mud environment-friendly treatment equipment, comprising the following steps:

[0067] Step one: screen the mud with a screen plate, and add a sedimentation tank for initial layering and water removal, and then prepare an appropriate amount of flocculating agent for standby;

[0068] Among them, the screen plate is selected to have a filtering precision of 5 millimeters, the screen plate is fixed in a inclined support manner, manual screening is performed, and large stone particles in the mud are removed; the screened mud is added to the sedimentation tank, and the upper layer of water is removed after standing and sedimentation; the flocculating powder is packaged in a packaging bag.

[0069] Step two: insert the hose connected to the powder pipe 33 into the flocculating agent bag, start the plug pressing mechanism, continuously add mud into the feeding hopper 29, and start the stirring mechanism;

[0070] More specifically, the program of the PLC controller is started, the power supply of the motor 23 and the powder gas conveyor 32 is turned on, the butterfly valve 31 is opened, the top rod of the air cylinder 34 is repeatedly operated, the plug 38 is reciprocated up and down, after the mud is added into the feeding hopper 29, the mud is pressed and tamped into the stirring cylinder 21 by the plug 38; when the mud is momentarily between the rotating blades 25, the mud is quickly cut and thrown by the rotating blades 25 into the space between the rotating blades 25; the flocculating powder is quickly sucked by the powder gas conveyor 32, discharged into the spray box 27 through the powder spraying pipe 20, and sprayed out of the spray opening 28 at a large angle, so as to quickly combine with the mud cut and broken by the rotating blades 25; the flocculating powder combined with the broken mud is rolled and combined with other mud, which is conducive to the uniform mixing of the flocculating powder and the mud; when the mud enters the inlet pipe 14, it is also cut by the lower rotating blades 25, covered by the flocculating powder sprayed out of the spray opening 28, and the broken mud is further subjected to the flocculating agent hoop and enters the reaction treatment cylinder 5.

[0071] Step three: when the mud height in the reaction treatment cylinder 5 meets the treatment requirement detected by the level detector 16, the plug pressing mechanism and the stirring mechanism are closed, and the promoting discharge mechanism is started;

[0072] More specifically, the program of the PLC controller is stopped, the power supply of the motor 23 and the powder gas conveyor 32 is turned off, the butterfly valve 31 is closed, the power supply of the exciter 10 and the air pump 19 is turned on, and the promoting discharge mechanism is operated.

[0073] Step four: after the operation time of the promoting mechanism is delayed for 10 minutes, the heating mechanism is started to heat until no obvious water vapor is discharged, the promoting mechanism is closed, and after a delay of 20 minutes, the heating mechanism is closed;

[0074] Before the unheated drying, the operation of the exciter 10 in the promoting mechanism can accelerate the flocculation of the silt and the flocculants, and accelerate the precipitation of the flocculation. The temperature controller is started to make the heating plate 3 operate to heat the mud in the reaction treatment cylinder 5. During the heating process, the mud boils due to the water content. Due to the high-frequency vibration, the contact area between the shock-absorbing frame 6 and the mud keeps a liquid layer gap. Under the action of the convex ring, the blocked surface of the oil and the silt in contact with the shock-absorbing frame 6 is destroyed, and the static layer between the layers is also destroyed, which is beneficial to the stripping of the silt and the oil. Due to the shock-absorbing effect of the shock-absorbing frame 6 on the reaction treatment cylinder 5, when the mud is heated, the water vapor generated by the heating of the mud will be discharged from the gap between the mud and the shock-absorbing frame 6 and the gap between the mud and the inner wall of the reaction treatment cylinder 5 in addition to the upper layer of the mud. Observe the steam condensation cooling tower. When the steam enters, the power of the exciter 10 and the air pump 19 is disconnected, and the power of the heating plate 3 is disconnected after a delay of 20 minutes.

[0075] Step five: open the sealing cabinet door 12, and pull the reaction treatment cylinder 5 out of the heat preservation cabinet 4 through the handle 11.

[0076] More specifically, open the sealing cabinet door 12, and wear heat-insulating gloves, hold the handle 11 and pull it out until the reaction treatment cylinder 5 is pulled out of the heat preservation cabinet 4.

[0077] Step six: use a spatula to scrape off the upper oil layer of the reaction treatment cylinder 5 and collect it in the oil collection cylinder; scrape off the middle flocculation of the reaction treatment cylinder 5 and collect it in the flocculation collection cylinder; and pour out the remaining silt particles in the reaction treatment cylinder 5 and concentrate them in one place.

[0078] At this time, the remaining oil layer is located in the upper layer, and the water is discharged after being heated by the heating mechanism. Therefore, only the remaining oil needs to be scraped off along the top of the sediment layer and collected for further refining operation of these long-chain hydrocarbon oils.

[0079] The above only describes the preferred embodiments of the present application and is not used to limit the protection scope of the present application.

Claims

1. An environmentally friendly treatment device for waste drilling mud in oil wells, characterized in that: The device includes an insulation frame (1), an insulation cabinet (4) on top of the insulation frame (1), a reaction processing cylinder (5) for reacting and treating mud inside the insulation cabinet (4), a heating mechanism for heating the reaction processing cylinder (5) inside the insulation frame (1), a drainage mechanism for accelerating the discharge of water vapor from the mud inside the reaction processing cylinder (5) inside the insulation cabinet (4), a top frame (13) on top of the insulation cabinet (4), an inlet pipe (14) on the top frame (13), one end of the inlet pipe (14) passing through the insulation cabinet (4) and connected to a pressure cap (15), and the pressure cap (15) covering the top of the reaction processing cylinder (5). The top of the inlet pipe (14) is provided with a mixing mechanism, which is used to add flocculant and mud and to mix flocculant and mud efficiently. The catalytic mechanism includes vibration-damping frames (6) arranged on both sides of the rear of the reaction processing cylinder (5). The outer wall of the vibration-damping frame (6) is uniformly provided with protruding rings. The rear of the heat preservation cabinet (4) is symmetrically provided with support springs (7). The front of the support spring (7) is connected to a vibration-damping plate (8). The two sides of the vibration-damping plate (8) are connected with vibration strips (9) and the vibration strips (9) are inserted into the vibration-damping frame (6). The vibration-damping plate (8) is also provided with an exciter (10). The exhaust mechanism also includes a vent (17) on one side of the top of the top frame (13). The top of the top frame (13) is provided with a cover (18) and the vent (17) is connected to the cover (18). The bottom of the cover (18) is connected to a vacuum pump (19). The vacuum pump (19) is connected to the pressure cap (15) and is connected to the inside of the reaction processing cylinder (5). The top side of the top frame (13) is connected to a pipe (20) for connecting an exhaust hose and the pipe (20) is connected to the vent (17).

2. The environmental protection equipment for treating waste oil drilling mud according to claim 1, characterized in that: The heating mechanism includes a base (2) disposed in the heat preservation frame (1), and a heating plate (3) is disposed on the base (2), with the top of the heating plate (3) in contact with the bottom of the reaction processing cylinder (5).

3. The environmental protection equipment for treating waste oil drilling mud according to any one of claims 1-2, characterized in that: The front of the reaction processing cylinder (5) is provided with a handle (11), and the front of the heat preservation cabinet (4) is provided with a material port, and a sealed cabinet door (12) is installed at the material port. When the sealed cabinet door (12) is closed, the handle (11) is supported on the sealed cabinet door (12).

4. The environmental protection equipment for treating waste drilling mud in oil wells according to claim 1, characterized in that: A level detector (16) for detecting the mud height is provided on one side of the pressure cap (15), and the transmission line of the level detector (16) is connected to an external computer.

5. The environmental protection treatment equipment for oil drilling waste mud according to claim 1, characterized in that: The mixing mechanism includes a mixing cylinder (21) connected to the top of the inlet pipe (14) and communicating with the inlet pipe (14). Both ends of the mixing cylinder (21) are provided with sealing plates (22). A motor (23) is provided on one of the sealing plates (22). The rotor shaft of the motor (23) passes through the sealing plate (22) into the mixing cylinder (21) and is connected to a rotating plate (24). Rotating blades (25) are uniformly arranged in a circumferential direction on the rotating plate (24). On the other side, the sealing plate (22) is provided with a powder spraying pipe (26). One end of the powder spraying pipe (26) is inserted into the mixing drum (21) and connected to a spray box (27). The spray box (27) is connected to the powder spraying pipe (26). The bottom of the powder spraying pipe (26) is provided with a nozzle (28). The top of the mixing drum (21) is provided with a feeding hopper (29) and the feeding hopper (29) is connected to the mixing drum (21). The top of the spray box (27) is provided with a scraper (30) for scraping off the mud attached to the rotating blade (25). One end of the powder spraying pipe (26) is connected to a butterfly valve (31). The inlet end of the butterfly valve (31) is connected to a powder gas conveyor (32). The suction end of the powder gas conveyor (32) is connected to a powder pipe (33) for inserting into the flocculant packaging bag.

6. The environmental protection treatment equipment for oil drilling waste mud according to claim 5, characterized in that: The top of the top frame (13) is provided with a pressing mechanism for inserting the mud in the feeding hopper (29) into the mixing drum (21). The pressing mechanism includes a cylinder (34) provided on the top frame (13). The top of the cylinder (34) is connected to a top plate (35). A pressure column (36) is provided on one side of the bottom of the top plate (35). A lower pressure plate (37) is connected to the bottom of the pressure column (36). A pressure plug (38) is connected to the bottom of the lower pressure plate (37).

7. A method for treating waste drilling mud using the environmentally friendly treatment equipment for oil drilling waste mud as described in claim 6, characterized in that, Includes the following steps: Step 1: Use a sieve plate to coarsely screen the mud and add it to a sedimentation tank for initial stratification and water removal. Then prepare an appropriate amount of flocculant for later use. Step 2: Insert the powder tube (33) into the flocculant bag, start the plugging mechanism, continuously add mud into the feeding hopper (29), and start the mixing mechanism; Step 3: When the mud height in the reaction treatment cylinder (5) is detected by the level detector (16) to meet the treatment requirements, close the plugging mechanism and the mixing mechanism, and start the drainage mechanism; Step 4: After the facilitator has been running for at least 10 minutes, start the heating mechanism and heat until no obvious water vapor is emitted. Then, turn off the facilitator and turn off the heating mechanism after a delay of at least 20 minutes. Step 5: Open the sealed cabinet door (12) and pull the reaction processing cylinder (5) out of the heat preservation cabinet (4) using the handle (11); Step 6: Use a scraper to scrape off the upper oil layer of the reaction treatment cylinder (5) and collect the oil layer in the oil collection cylinder; scrape off the middle layer of flocculent material in the reaction treatment cylinder (5) and collect the flocculent material in the flocculent material collection cylinder; pour out the remaining mud and sand particles in the reaction treatment cylinder (5) and pile them up in one place.

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