Fluid system for an oily sludge disposal plant

Abstract

The application discloses a fluid system of an oily sludge treatment device, which comprises a pyrolysis main treatment device, a pump group fluid device and public auxiliary facilities, and the three are independently arranged and communicated with each other through pipelines; the pyrolysis main treatment device comprises a pyrolysis chamber and a spraying recovery chamber, and oil-water steam evaporated after pyrolysis of oily sludge in the pyrolysis chamber enters the spraying recovery chamber; the spraying recovery chamber can recover liquefied oil-water steam; and the pump group fluid device can condense and cool the oil-water steam in the spraying recovery chamber. The fluid system independently arranges the pyrolysis main treatment device and the pump group fluid device, avoids heat exchange and mutual interference between the two, is beneficial to normal and efficient operation of the respective systems, avoids corrosion of the pyrolysis main treatment device when fluid equipment is running, leaking and dripping, centrally arranges all fluid equipment, is convenient for installation and maintenance, and improves overall operation reliability and service life of the equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the oil and gas field environmental protection technical field, especially to a fluid system of an oily sludge disposal device. BACKGROUND

[0002] Oily sludge refers to the mixture of mineral oil, water and soil generated in the process of oil and gas resource exploration, exploitation and gathering and transportation. Oily sludge belongs to HW08 in the National Hazardous Waste List. Common harmless treatment methods for oily sludge include incineration, heat treatment, chemical demulsification, solvent extraction and biological method. Among them, the heat treatment method has the advantages of short cycle, wide treatment range, less environmental constraints, good volume and mass reduction effect, and full recovery. This technology has been widely regarded as the best effective operation technology.

[0003] Based on the heat treatment method for treating oily sludge, the electrical elements of the treatment device often have requirements for explosion-proof, dust-proof and waterproof. The current fluid system of oily sludge pyrolysis equipment, such as pumps and valves, is arranged on the equipment shell. The inner cavity of the pyrolysis equipment often reaches a high temperature of 500 DEG C or above. Even if there is heat insulation cotton, the equipment shell still has a temperature of about 50-80 DEG C, which has a certain impact on the normal operation of the fluid system components. At the same time, the high-temperature equipment shell indirectly heats the conveying medium in the pipeline, causing the medium that has been cooled by the fluid system to be heated again, causing mutual interference between the fluid equipment and the pyrolysis equipment. When the fluid system fails, the temperature of the main treatment equipment needs to be reduced to room temperature before maintenance, and there are many inconveniences in the replacement and maintenance of fluid components. SUMMARY

[0004] The purpose of the present application is to overcome the mutual interference between the pyrolysis equipment and the fluid system in the existing oily sludge pyrolysis equipment, and the inconvenience of replacing and maintaining the fluid components, and to provide a fluid system of an oily sludge disposal device.

[0005] In order to achieve the above-mentioned purpose of the application, the following technical solutions are provided:

[0006] A fluid system of an oily sludge disposal device, comprising a pyrolysis main treatment device, a pump group fluid device and public auxiliary facilities, the pyrolysis main treatment device, the pump group fluid device and the public auxiliary facilities are independently arranged, and the pyrolysis main treatment device, the pump group fluid device and the public auxiliary facilities are communicated with each other through pipelines; the pyrolysis main treatment device comprises a pyrolysis chamber and a spraying recovery chamber, and the oil-water vapor evaporated after the pyrolysis of the oily sludge in the pyrolysis chamber enters the spraying recovery chamber; the spraying recovery chamber can recover the liquefied oil-water vapor; the pump group fluid device can condense and cool the oil-water vapor in the spraying recovery chamber.

[0007] The fluid system of the oil-containing sludge treatment device provided by the application independently arranges the pyrolysis main treatment device and the pump group fluid device in space positions, avoids heat exchange and mutual interference, is beneficial to normal and efficient operation of the respective systems, avoids leakage of fluid equipment such as pipes, valves and pumps during work, and corrosion of the pyrolysis main treatment device; the independent arrangement mode can facilitate maintenance and replacement without waiting for the entire pyrolysis device to cool down when a fault occurs, and is more convenient and efficient for maintenance work. The pump group fluid device centrally arranges all fluid equipment, is convenient for installation and maintenance, does not interfere with the pyrolysis device, and improves overall operation reliability and service life of the device.

[0008] Optionally, the spray recovery chamber comprises a water collecting chamber, an oil collecting chamber, a recovery chamber and a spray chamber; the pyrolysis chamber is directly communicated with the spray chamber, the spray chamber is communicated with the recovery chamber, and the water collecting chamber is communicated with the recovery chamber; the water collecting chamber can provide spray cooling water for the spray chamber, the liquefied oil-water vapor in the spray chamber flows into the recovery chamber for recovery, the recovered water in the recovery chamber flows back into the water collecting chamber, and the recovered oil in the recovery chamber flows back into the oil collecting chamber.

[0009] The fluid system of the oil-containing sludge treatment device provided by the application adopts a chamber design for the spray recovery chamber, realizes water-oil separation, improves recovery rate and resource utilization efficiency, effectively separates and recovers oil-water vapor after pyrolysis through spraying and condensation, continuously supplies spray cooling water for the spray chamber through the water collecting chamber, forms a closed loop, saves water and reduces operation cost, and centrally recovers liquid substances in the recovery chamber, which is convenient for subsequent treatment and transportation. The water and oil are respectively returned to the water collecting chamber and the oil collecting chamber, and classified utilization of resources is realized.

[0010] Optionally, a dust removal and filtration device is arranged in the communication passage between the pyrolysis chamber and the spray chamber, and the dust removal and filtration device can remove pyrolysis solid residues carried in the oil-water vapor.

[0011] In this way, solid residues generated during pyrolysis can be prevented from entering the spray chamber, the spray nozzles and pipelines are prevented from being blocked, the normal spray condensation effect is prevented from being affected, and the service life of the device is effectively prolonged.

[0012] Optionally, the bottom of the recovery chamber is communicated with the bottom of the water collecting chamber, a partition plate with a predetermined height is arranged between the recovery chamber and the oil collecting chamber, and the recovered oil can flow into the oil collecting chamber from the upper part of the partition plate.

[0013] With this arrangement, the principle of natural separation of oil and water under the action of gravity is utilized, the recovery chamber and the bottom of the water collecting chamber are communicated to form a communicating vessel, and the recovered water automatically flows into the water collecting chamber; when the stratified oil liquid surface exceeds the height of the partition, the recovered oil overflows the partition to reach the oil collecting chamber. This arrangement does not require additional separation devices, simplifying the oil-water separation process.

[0014] Optionally, the public auxiliary facilities include a cooling tower, and the pump group fluid device includes a water tank, a first spraying pump, a second spraying pump, a heat exchanger, and a heat exchanger pump; the water tank, the heat exchanger pump, the cold side of the heat exchanger, and the cooling tower are sequentially communicated by pipelines to form an outer circulation system, and the water in the outer circulation system is low-temperature water; the water collecting chamber, the first spraying pump, the second spraying pump, the hot side of the heat exchanger, and the spraying chamber are sequentially communicated by pipelines to form an inner circulation system, and the water in the inner circulation system is high-temperature water; the low-temperature water and the high-temperature water exchange heat in the heat exchanger.

[0015] With this arrangement, the high-temperature spraying circulation and the low-temperature cooling circulation are reasonably separated, the water in the inner circulation system is continuously heated to become high-temperature water after spraying high-temperature oil-water vapor, while the outer circulation low-temperature water always maintains a relatively low temperature, and the temperature difference between the two is large, which is beneficial to efficient heat exchange in the heat exchanger. The inner circulation high-temperature water is cooled after transferring heat to the outer circulation low-temperature water in the heat exchanger, realizing reasonable recycling of heat; at the same time, the outer circulation high-temperature water becomes low-temperature water after being cooled in the cooling tower, forming a closed loop circulation, reducing the demand for fresh water supply, and saving water resources. The spraying pumps and the heat exchanger pump drive the two circulations respectively, and the flow is smooth and efficient. The water tank serves as a buffer to ensure continuous and stable supply of low-temperature water.

[0016] Optionally, the first spraying pump and the second spraying pump are connected in parallel, and the first spraying pump and the second spraying pump are each provided with a one-way valve.

[0017] With this arrangement, the redundancy backup capability of the system is improved. When one of the pumps fails, the other pump can continue to operate alone to ensure continuous spraying circulation, enhancing the reliability and continuous operation capability of the system; according to actual working conditions, single-pump operation or double-pump simultaneous operation can be realized to meet different processing scales and load requirements, improving the adaptability of the equipment. The two spraying pumps are each provided with a one-way valve to prevent circulation water from intermingling between the two spraying pumps when the two pumps are operated simultaneously.

[0018] Optionally, the public auxiliary facilities further comprise a recovered water tank, a recovered oil tank, a water storage tank, and an oil storage tank; the pump group fluid device further comprises a water discharge pump, an oil discharge pump, a sewage pump, and a water feeding pump; the water discharge pump is in communication with the recovered water tank; the oil discharge pump is in communication with the recovered oil tank and the oil storage tank; the water feeding pump is in communication with the water storage tank, the water tank, and the cooling tower; the sewage pump is in communication with the water tank, the recovery chamber, the oil collection chamber, the water collection chamber, the recovered water tank, the recovered oil tank, the cooling tower, the water storage tank, and the oil storage tank, respectively, and the sewage pump can discharge slurry water; the recovered water tank and the recovered oil tank are vertical storage tanks.

[0019] With this arrangement, the resources are classified and properly stored, and the comprehensive utilization rate of resources is improved. The sewage pump is connected with each device, and when the relevant device needs to be discharged, the corresponding sewage valve can be opened to conveniently discharge the sewage. When the recovery chamber is discharged, the solid residue in the pyrolysis chamber is adsorbed on the oil-water vapor and brought into the spraying chamber and then into the recovery chamber, so there is often slurry state sludge at the bottom of the recovery chamber. Therefore, the sewage pump is provided with the ability to discharge slurry water, which can be discharged to other treatment devices, such as a filter press. After the slurry water is filtered, the filter cake can be put into the oily sludge raw material pool for secondary treatment, or if it is discharged as general sewage, it can be discharged into a wastewater treatment station. The water feeding pump inlet is in communication with the water storage tank, and the pressurized water can be used to supplement the water tank and the cooling tower. The water discharge pump inlet is in communication with the recovered water tank, and the pressurized water can be used for other water use on the site, such as dust suppression and site cleaning. The oil discharge pump inlet is in communication with the recovered oil tank, and the pressurized oil can be transported to the oil storage tank for storage. The recovered water tank and the recovered oil tank are both vertical storage tanks, and the recovered water and the recovered oil can be again static stratification in the corresponding vertical storage tanks to obtain relatively pure water and oil, and the bottom turbid part can be discharged through the sewage outlet.

[0020] Optionally, the pump group fluid device further comprises an oil pump and a water pump, and a liquid level meter is arranged in each of the water collection chamber and the oil collection chamber, and the liquid level meter can detect the liquid level in real time. When the liquid level in the water collection chamber reaches a predetermined height, the water pump can pump the liquid in the water collection chamber to the recovered water tank. When the liquid level in the oil collection chamber reaches a predetermined height, the oil pump can pump the liquid in the oil collection chamber to the recovered oil tank.

[0021] With this arrangement, by adding an oil pump and a water pump in the pump group fluid device and arranging a liquid level meter in the water collection chamber and the oil collection chamber, when the liquid level reaches a preset value, the oil pump and the water pump automatically pump the liquid in the water collection chamber and the oil collection chamber to the recovered water tank and the recovered oil tank, respectively, to realize automatic classification and collection of resources and improve the automation level of recovery. The real-time monitoring of the liquid level meter, combined with the start and stop of the oil pump and the water pump, can effectively avoid the risk of excessive liquid level or overflow, and ensure the safe and smooth operation of the system.

[0022] Optionally, the public auxiliary facilities further comprise an air compressor and an air tank, the pump group fluid device further comprises a nitrogen generator, the air compressor pressurizes compressed air into the air tank, the air compressor can provide power for the pyrolysis main treatment equipment and the pneumatic elements of the pump group fluid device, and part of the compressed air enters the nitrogen generator to generate nitrogen, and the nitrogen generator is in communication with the air tank and the nitrogen tank respectively.

[0023] With this arrangement, the air compressor can provide stable compressed air power for the entire equipment system, meet the needs of various pneumatic elements such as pneumatic valves, air cylinders, etc., and ensure normal operation of the equipment; the air tank is arranged to store air and reduce pressure, adjust the supply of compressed air, and improve air utilization efficiency; the nitrogen generator extracts nitrogen from compressed air, and the nitrogen tank stores nitrogen to provide inert protective gas for the equipment and create an oxygen-free environment, which is conducive to the realization of special process conditions.

[0024] Optionally, the pump group fluid device further comprises an electric control box, and the electric control box is used to control the operation of the fluid system of the oily sludge treatment device.

[0025] With this arrangement, the electric control box can be a PLC control box commonly used in the industry, and the addition of the electric control box makes the automatic control of the fluid system more efficient, improves production efficiency and flexibility, and reduces labor costs.

[0026] Compared with the prior art, the present application has the following advantages:

[0027] 1. The fluid system of the oily sludge treatment device provided by the present application arranges the pyrolysis main treatment equipment and the pump group fluid device independently in space, avoids heat exchange and mutual interference between them, is conducive to the normal and efficient operation of each system, and at the same time, since the pyrolysis main treatment equipment and the pump group fluid device are arranged independently, the leakage phenomenon occurs at the connection of fluid equipment such as pipes, valves, pumps, etc. during work, which corrodes the pyrolysis main treatment equipment; this independent arrangement method does not need to wait for the entire pyrolysis equipment to cool down when a fault occurs, and can be repaired, which is convenient for maintenance and replacement, and the maintenance work is more convenient and efficient. The pump group fluid device is centrally arranged, which is convenient to install and maintain, and does not interfere with the pyrolysis equipment, thereby improving the overall operation reliability and service life of the equipment.

[0028] 2. The oil-containing sludge treatment device fluid system provided by the present application, by reasonably separating the high-temperature spraying cycle and the low-temperature cooling cycle, the water in the inner circulation system is continuously heated to become high-temperature water after spraying high-temperature oil-water vapor, while the outer circulation low-temperature water always maintains a lower temperature, and the temperature difference between the two is large, which is beneficial to efficient heat exchange in the heat exchanger. The inner circulation high-temperature water is cooled after transferring heat to the outer circulation low-temperature water in the heat exchanger, realizing the reasonable recycling of heat; at the same time, the outer circulation heated water becomes low-temperature water again after cooling in the cooling tower, forming a closed loop circulation, reducing the demand for fresh water supply and saving water resources. The spraying pump and the heat exchange pump respectively drive the two circulations, and the flow is smooth and efficient. The water tank is set to play a reserve and buffer role, ensuring the continuous and stable supply of low-temperature water.

[0029] 3. The oil-containing sludge treatment device fluid system provided by the present application realizes classified recycling and proper storage of resources, and improves the comprehensive utilization rate of resources. The sewage pump is connected with each device, and when the related device needs to discharge sewage, only the corresponding sewage valve needs to be opened to conveniently discharge sewage; the water adding pump inlet is communicated with the water storage tank, and the pressurized water can be used to supply water to the water tank and the cooling tower; the water discharging pump inlet is communicated with the recovered water tank, and the pressurized water can be used for other water use in the site, such as dust suppression, site cleaning, etc.; the oil discharging pump inlet is communicated with the recovered oil tank, and the pressurized oil can be transported to the oil storage tank for storage; the recovered water tank and the recovered oil tank are both set as vertical storage tanks, and the recovered water and the recovered oil can be again statically stratified in the corresponding vertical storage tanks to obtain relatively pure water and oil, and the bottom turbid part can be discharged through the sewage outlet. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a schematic diagram of the fluid system of the oil-containing sludge treatment device;

[0031] Figure 2 It is a schematic diagram of the pyrolysis main treatment device;

[0032] Figure 3 It is a schematic diagram of the pump group fluid device;

[0033] Figure 4 It is a schematic diagram of the public auxiliary facility;

[0034] Figure 5 It is a schematic diagram of the cooling tower structure.

[0035] Reference: 1-pyrolysis main processing equipment, 11-pyrolysis chamber, 12-spraying recovery chamber, 121-water collecting chamber, 122-oil collecting chamber, 123-recovery chamber, 124-spraying chamber, 2-pump group fluid device, 201-water tank, 202-first spraying pump, 203-second spraying pump, 204-heat exchanger, 205-heat exchange pump, 206-water discharge pump, 207-oil discharge pump, 208-drainage pump, 209-water feeding pump, 210-oil pumping pump, 211-water pumping pump, 212-nitrogen generator, 213-nitrogen tank, 214-electric control box, 3-public auxiliary facilities, 31-cooling tower, 311-tank body, 312-fan, 313-coil pipe, 314-water distribution pump, 315-heating pipe, 316-inlet, 317-outlet, 318-cooling tower water feeding port, 319-cooling tower drainage port, 32-recovered water tank, 33-recovered oil tank, 34-water storage tank, 35-oil storage tank, 36-air compressor, 37-air tank, 100-other water outlet, 200-sewage treatment outlet. DETAILED DESCRIPTION

[0036] The application will be further described in conjunction with test examples and specific embodiments. However, it should not be understood that the above-mentioned subject matter of the application is limited to the following examples only, and any technology realized based on the content of the application falls within the scope of the application.

[0037] In the description of the specific embodiments of the application, the orientation or position relationship terms such as "up", "down", "left", "right", "center", "inner", "outer", and the like appearing without special indication are expressed based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product / equipment / device of the application is usually used. These orientation or position relationship terms are only for the convenience of describing the application scheme or simplifying the description in the specific embodiments, and for the convenience of the technical personnel to quickly understand the scheme, and are not intended to indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the application.

[0038] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or overhanging or parallel, but can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Alternatively, it can be simplified to understand that the corresponding device / component / element is arranged in the direction of "horizontal", "vertical", "overhanging", "parallel" and the like, and can have an error / deviation of ±10% relative to the corresponding direction, more preferably an error / deviation of ±8%, more preferably an error / deviation of ±6%, more preferably an error / deviation of ±5%, more preferably an error / deviation of ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the present application.

[0039] In addition, the terms "first", "second", "third", and the like in the description of the present application are only used to distinguish the same or similar components, and should not be understood as emphasizing or implying the relative importance of the specific components.

[0040] In addition, in the description of the embodiments of the present application, "several", "a plurality of", "several" represent at least 2. It can be 2, 3, 4, 5, 6, 7, 8, 9, etc. Any case, it can even be more than 9 cases.

[0041] In addition, in the description of the technical solutions of the present application, unless otherwise specified / limited / limited, the terms "arrangement", "installation", "connection", "connection", "provided with", "laid", "arrangement" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, which can be welding, riveting, bolting, screwing, etc. Common connection means in the art. Such connection can be mechanical connection, or electrical connection or communication connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements.

[0042] Example 1

[0043] For example Figure 1As shown, the embodiment provides a fluid system of an oily sludge treatment device, which comprises a pyrolysis main treatment device 1, a pump group fluid device 2 and a public auxiliary facility 3. The pyrolysis main treatment device 1, the pump group fluid device 2 and the public auxiliary facility 3 are independently arranged in space and are communicated with each other through pipelines. The pyrolysis main treatment device 1 comprises a pyrolysis chamber 11 and a spraying recovery chamber 12. The oily sludge is pyrolyzed in the pyrolysis chamber 11 and the oil and water vapor is evaporated into the spraying recovery chamber 12. The spraying recovery chamber 12 can recover the liquefied oil and water vapor. The pump group fluid device 2 can condense and cool the oil and water vapor in the spraying recovery chamber 12.

[0044] Specifically as Figure 2 As shown, the spraying recovery chamber 12 comprises a water collecting chamber 121, an oil collecting chamber 122, a recovery chamber 123 and a spraying chamber 124.

[0045] Specifically as Figure 3 As shown, the pump group fluid device 2 comprises a water tank 201, a first spraying pump 202, a second spraying pump 203, a heat exchanger 204, a heat exchange pump 205, a water discharge pump 206, an oil discharge pump 207, a blowdown pump 208, a water feeding pump 209, an oil pumping pump 210, a water pumping pump 211, a nitrogen generator 212, a nitrogen tank 213 and an electric control box 214.

[0046] Specifically as Figure 4 As shown, the public auxiliary facility 3 comprises a cooling tower 31, a recovered water tank 32, a recovered oil tank 33, a water storage tank 34, an oil storage tank 35, an air compressor 36 and an air tank 37.

[0047] The pyrolysis chamber 11 is directly communicated with the spraying chamber 124. After the oily sludge is fully pyrolyzed in the pyrolysis chamber 11, the petroleum hydrocarbon and water are evaporated into the spraying chamber 124.

[0048] A dust removal and filtration device can be arranged in the communication passage between the pyrolysis chamber 11 and the spraying chamber 124. The dust removal and filtration device can remove the pyrolysis solid residue carried in the oil and water vapor. In this way, the solid residue generated in the pyrolysis process can be prevented from entering the spraying chamber 124, the spraying nozzle and the pipeline are prevented from being blocked, the normal spraying and condensing effect is prevented from being affected, the service life of the device is effectively prolonged. It can be understood that the dust removal and filtration device can be a spiral dust collector.

[0049] The spray chamber 124 is communicated with the recovery chamber 123, and the water collecting chamber 121 is communicated with the recovery chamber 123, and the water collecting chamber 121 can provide the spray chamber 124 with spray cooling water, that is, the spray water of the spray chamber 124 comes from the recovered water in the water collecting chamber 121. The water in the water collecting chamber 121 is pressurized by the first spray pump 202 or the second spray pump 203 and then sprayed to the spray chamber 124, and the liquefied oil-water vapor in the spray chamber 124 flows into the recovery chamber 123 for recovery, the recovered water in the recovery chamber 123 flows back into the water collecting chamber 121, and the recovered oil in the recovery chamber 123 flows back into the oil collecting chamber 122.

[0050] The fluid system of the oily sludge treatment device provided by the embodiment realizes the water-oil separation function, improves the recovery rate and resource utilization efficiency, and separates and recovers the oil-water vapor after pyrolysis through spraying and condensation. The water collecting chamber 121 continuously supplies cooling water to the spray chamber 124 to form a closed loop, thereby saving water and reducing operation cost. The recovery chamber 123 recovers liquid substances, which is convenient for subsequent treatment and transportation. The water and oil are respectively returned to the water collecting chamber 121 and the oil collecting chamber 122, thereby realizing classified utilization of resources.

[0051] Specifically, the bottom of the recovery chamber 123 is communicated with the bottom of the water collecting chamber 121, and a partition with a predetermined height is arranged between the recovery chamber 123 and the oil collecting chamber 122, and the recovered oil can flow into the oil collecting chamber 122 from the upper part of the partition. By using this arrangement, the principle of natural separation of oil and water under the action of gravity is utilized. The recovery chamber 123 is communicated with the bottom of the water collecting chamber 121 to form a communicating vessel, and the recovered water automatically flows into the water collecting chamber 121. When the layered oil liquid surface exceeds the height of the partition, the recovered oil overflows the partition and reaches the oil collecting chamber 122. This arrangement does not require additional separation devices, thereby simplifying the oil-water separation process.

[0052] Further, liquid level meters are arranged in the water collecting chamber 121 and the oil collecting chamber 122, and the liquid level meters can detect the liquid level in real time. When the liquid level in the water collecting chamber 121 reaches a predetermined height, the water pump 211 can pump the liquid in the water collecting chamber 121 to the recovered water tank 32 for storage. When the liquid level in the oil collecting chamber 122 reaches a predetermined height, the oil pump 210 can pump the liquid in the oil collecting chamber 122 to the recovered oil tank 33 for storage. By arranging the liquid level meters in the water collecting chamber 121 and the oil collecting chamber 122, when the liquid level reaches a preset value, the oil pump 210 and the water pump 211 automatically pump the liquid in the water collecting chamber 121 and the oil collecting chamber 122 to the recovered water tank 32 and the recovered oil tank 33 respectively, thereby realizing automatic classified collection of resources and improving the automation level of recovery. The real-time monitoring of the liquid level meters, combined with the start and stop of the oil pump 210 and the water pump 211, can effectively avoid the risk of excessive liquid level or overflow, thereby ensuring the safe and smooth operation of the system.

[0053] Further, the water tank 201, the heat pump 205, the cold side of the heat exchanger 204, and the cooling tower 31 are connected in sequence by pipelines to form an outer circulation system, and the water in the outer circulation system is low-temperature water (the temperature of the low-temperature water is generally about 25°C, and is not higher than 25°C) ;

[0054] The water collecting chamber 121, the first spraying pump 202, the second spraying pump 203, the hot side of the heat exchanger 204, and the spraying chamber 124 are connected in sequence by pipelines to form an inner circulation system, and the water in the inner circulation system is high-temperature water (the temperature of the high-temperature water is generally higher than 25°C) ;

[0055] The low-temperature water and the high-temperature water are heat-exchanged in the heat exchanger 204.

[0056] With this arrangement, the high-temperature spraying circulation and the low-temperature cooling circulation are reasonably separated, the water in the inner circulation system is continuously heated to become high-temperature water after spraying high-temperature oil and water vapor, while the outer circulation low-temperature water always maintains a relatively low temperature, and the temperature difference between the two is large, which is beneficial to efficient heat exchange in the heat exchanger 204. The inner circulation high-temperature water is cooled after transferring heat to the outer circulation low-temperature water in the heat exchanger 204, realizing reasonable recycling of heat; at the same time, the outer circulation high-temperature water becomes low-temperature water again after cooling in the cooling tower 31, forming a closed loop circulation, reducing the demand for fresh water supply, and saving water resources. The two spraying pumps and the heat pump 205 drive the inner and outer two circulation systems to run smoothly and efficiently, and the water tank 201 plays a role in storage and buffering, ensuring the continuous and stable supply of low-temperature water.

[0057] Further, the first spraying pump 202 and the second spraying pump 203 are connected in parallel, and the first spraying pump 202 and the second spraying pump 203 are each provided with a one-way valve. With this arrangement, the redundancy backup capability of the system is improved. When one of the pumps fails, the other pump can continue to operate alone, ensuring that the spraying circulation is not interrupted, and the reliability and continuous operation capability of the system are enhanced; according to actual working conditions, one pump or both pumps can be operated, so as to meet different processing scales and load requirements, and improve the adaptability of the equipment. The one-way valves arranged in front of the two spraying pumps can prevent the circulation water from intermingling between the two spraying pumps when the two pumps are operated at the same time.

[0058] Further, the water discharge pump 206 is connected with the recovered water tank 32;

[0059] The oil discharge pump 207 is connected with the recovered oil tank 33 and the oil storage tank 35;

[0060] The water adding pump 209 is connected with the water storage tank 34, the water tank 201, and the cooling tower 31;

[0061] The blowdown pump 208 is communicated with the water tank 201, the recovery chamber 123, the oil collection chamber 122, the water collection chamber 121, the recovery water tank 32, the recovery oil tank 33, the cooling tower 31, the water storage tank 34 and the oil storage tank 35 respectively, and the blowdown pump 208 can discharge mud water;

[0062] The recovery water tank 32 and the recovery oil tank 33 are vertical storage tanks.

[0063] With this arrangement, the classified recovery and proper storage of resources are realized, and the comprehensive utilization rate of resources is improved. The blowdown pump 208 is connected with each device, and each device is provided with a valve at the blowdown port. The valve is in a normally closed state. When the related device needs to be blown down, the corresponding blowdown valve only needs to be opened to conveniently blow down. When the recovery chamber 123 is blown down, the solid residue of the pyrolysis chamber 11 is adsorbed on the oil-water vapor and brought into the spray chamber 124 and then into the recovery chamber 123, so that there is often sludge in the form of mud at the bottom of the recovery chamber 123. Therefore, the blowdown pump 208 is provided with the ability to discharge mud water. The mud water can be discharged to other treatment devices, such as a filter press. After the mud water is filtered, the filter cake can be put into the oily sludge raw material pool for secondary treatment. If the discharge is general sewage, it can be discharged into a wastewater treatment station through the sewage treatment port 200. The inlet of the water adding pump 209 is communicated with the water storage tank 34, and the water storage tank 34 is used to store fresh clean water. The clean water is used to supplement the water used in the fluid system. Specifically, the pressurized water can be used to supplement the water tank 201 and the cooling tower 31. The inlet of the water unloading pump 206 is communicated with the recovery water tank 32, and the pressurized water can be discharged from other water outlets 100 for other water uses on the site, such as dust suppression and site cleaning. The inlet of the oil unloading pump 207 is communicated with the recovery oil tank 33, and the pressurized oil can be transported to the oil storage tank 35 for storage. The oil storage tank 35 is used to store the oil product that is statically stratified in the recovery oil tank 33. The recovery water tank 32 and the recovery oil tank 33 are both vertical storage tanks. The recovered water and the recovered oil can be statically stratified again in the corresponding vertical storage tanks to obtain relatively pure water and oil. The bottom turbid part can be discharged through the blowdown port.

[0064] Further, the air compressor 36 pressurizes the compressed air into the air tank 37, and the air compressor 36 can provide power for the pneumatic elements of the pyrolysis main processing device 1 and the pump group fluid device 2. A part of the compressed air enters the nitrogen generator 212 to generate nitrogen, and the nitrogen generator 212 is in communication with the air tank 37 and the nitrogen tank 213, respectively. In this way, the air compressor 36 can provide stable compressed air power for the entire device system, meet the needs of various pneumatic elements such as pneumatic valves, air cylinders, etc., and ensure normal operation of the device; the air tank 37 is provided to store and reduce pressure, adjust the supply of compressed air, and improve air utilization efficiency; the nitrogen generator 212 purifies nitrogen from the compressed air in the air tank 37, stores the separated nitrogen in the nitrogen tank 213, and provides inert protective gas for the device to create an oxygen-free environment, which is conducive to the realization of special process conditions.

[0065] Further, the electric control box 214 is used to control the operation of the fluid system of the oily sludge treatment device. The electric control box 214 is connected with power lines and signal lines of each pump, the nitrogen generator 212, and the cooling tower 31 in the system, and control buttons are arranged on the electric control box 214, which can be controlled locally or remotely controlled by feeding back signals to a remote control system. All motors have high requirements for explosion-proof and dust-proof. The electric control box 214 can be a PLC control box commonly used in industry. The addition of the electric control box 214 makes the automatic control degree of the fluid system higher, improves production efficiency and flexibility, and reduces labor costs.

[0066] Further, the cooling tower 31 of the embodiment can be a closed cooling tower, which includes a box body 311, a fan 312, a coil pipe 313, a water distribution pump 314, and a heating pipe 315. The water in the external circulation system enters the coil pipe 313 from the suction port 316 and is discharged from the discharge port 317. A cooling tower sewage outlet 319 is arranged at the bottom of the box body 311, and the generated sewage can be discharged from the cooling tower sewage outlet 319. A cooling tower water supplement port 318 is also arranged on the box body 311, and the water in the water storage tank 34 can be supplemented to the cooling tower 31 through the cooling tower water supplement port 318. When the temperature of the water in the external circulation system is not higher than 35°C, only the fan 312 is started to blow the coil pipe 313 for heat dissipation. When the temperature of the external circulation water exceeds 35°C, the water distribution pump 314 pressurizes the normal temperature water at the bottom of the box body 311 to the upper part of the coil pipe 313 to spray and cool the coil pipe 313. When the temperature of the external circulation water exceeds 40°C, the fan 312 and the water distribution pump 314 are started simultaneously for heat dissipation. The heating pipe 315 is also arranged at the bottom of the box body 311. When the temperature is low in winter and the cooling water in the box body 311 freezes, the heating pipe 315 is started to melt the ice water to ensure that the water can enter the water distribution pump 314.

[0067] The fluid system of the oil-containing sludge treatment device provided by the embodiment independently arranges the pyrolysis main treatment equipment 1 and the pump group fluid device 2 in space positions, avoids heat exchange and mutual interference between each other, is beneficial to normal and efficient operation of respective systems, the independent arrangement mode can be maintained without waiting for the entire pyrolysis equipment to be cooled when a fault occurs, is convenient for maintenance and replacement, and is more convenient and efficient for maintenance work. The pump group fluid device 2 centrally and jacks up all fluid equipment, is convenient for installation and maintenance of connecting pipes, does not cause interference between the fluid equipment and the pyrolysis equipment, and improves overall operation reliability and service life of the equipment.

[0068] The above merely describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fluid system for an oily sludge treatment device, comprising a pyrolysis main treatment unit (1), a pump fluid unit (2), and auxiliary facilities (3), characterized in that, The pyrolysis main processing equipment (1), the pump group fluid device (2) and the auxiliary facilities (3) are set up independently of each other, and the pyrolysis main processing equipment (1), the pump group fluid device (2) and the auxiliary facilities (3) are connected to each other through pipelines; The pyrolysis main treatment equipment (1) includes a pyrolysis chamber (11) and a spray recovery chamber (12). After the oily sludge is pyrolyzed in the pyrolysis chamber (11), the oil and water vapor evaporate and enter the spray recovery chamber (12). The spray recovery chamber (12) can recover liquefied oil and water vapor; The pump fluid device (2) can condense and cool the oil and water vapor in the spray recovery chamber (12); The spray recovery chamber (12) includes a water collection chamber (121), an oil collection chamber (122), a recovery chamber (123), and a spray chamber (124). The pyrolysis chamber (11) is directly connected to the spray chamber (124), the spray chamber (124) is connected to the recovery chamber (123), and the water collection chamber (121) is connected to the recovery chamber (123). The auxiliary facilities (3) include a cooling tower (31), and the pump set fluid device (2) includes a water tank (201), a first spray pump (202), a second spray pump (203), a heat exchanger (204), and a heat exchange pump (205). The water tank (201), the heat pump (205), the cold side of the heat exchanger (204), and the cooling tower (31) are connected in sequence through pipelines to form an external circulation system, and the water in the external circulation system is low temperature water; The auxiliary facilities (3) also include an air compressor (36) and an air tank (37). The pump fluid device (2) also includes a nitrogen generator (212). The air compressor (36) compresses compressed air into the air tank (37). The air compressor (36) can provide power to the pneumatic components of the pyrolysis main processing equipment (1) and the pump fluid device (2). A portion of the compressed air enters the nitrogen generator (212) to generate nitrogen. The nitrogen generator (212) is connected to the air tank (37) and the nitrogen tank (213) respectively.

2. The fluid system of the oily sludge treatment device according to claim 1, characterized in that, The water collection chamber (121) can provide spray cooling water to the spray chamber (124). The liquefied oil and water vapor in the spray chamber (124) flows into the recovery chamber (123) for recovery. The recovered water in the recovery chamber (123) flows back into the water collection chamber (121), and the recovered oil in the recovery chamber (123) flows back into the oil collection chamber (122).

3. The fluid system of the oily sludge treatment device according to claim 2, characterized in that, A dust removal and filtration device is provided in the communication channel between the pyrolysis chamber (11) and the spray chamber (124), which can remove pyrolysis solid residue carried in oil and water vapor.

4. The fluid system of the oily sludge treatment device according to claim 2, characterized in that, The bottom of the recovery chamber (123) is connected to the bottom of the water collection chamber (121). A partition of a predetermined height is provided between the recovery chamber (123) and the oil collection chamber (122), and the recovered oil can flow into the oil collection chamber (122) from the upper part of the partition.

5. The fluid system of the oily sludge treatment device according to claim 2, characterized in that, The water collection chamber (121), the first spray pump (202), the second spray pump (203), the hot side of the heat exchanger (204), and the spray chamber (124) are connected in sequence through pipelines to form an internal circulation system, and the water in the internal circulation system is high-temperature water; The low-temperature water and the high-temperature water exchange heat in the heat exchanger (204).

6. The fluid system of the oily sludge treatment device according to claim 5, characterized in that, The first spray pump (202) and the second spray pump (203) are connected in parallel, and both the first spray pump (202) and the second spray pump (203) are equipped with a one-way valve.

7. The fluid system of the oily sludge treatment device according to claim 5, characterized in that, The auxiliary facilities (3) also include a water recycling tank (32), a oil recycling tank (33), a water storage tank (34), and an oil storage tank (35); The pump set fluid device (2) also includes a water unloading pump (206), an oil unloading pump (207), a sewage pump (208), and a water filling pump (209). The unloading pump (206) is connected to the recovery water tank (32); The unloading pump (207) is connected to the recovery tank (33) and the storage tank (35); The water pump (209) is connected to the water storage tank (34), the water tank (201) and the cooling tower (31); The sewage pump (208) is connected to the water tank (201), the recovery chamber (123), the oil collection chamber (122), the water collection chamber (121), the recovery water tank (32), the recovery oil tank (33), the cooling tower (31), the water storage tank (34), and the oil storage tank (35), respectively. The sewage pump (208) is capable of discharging mud and water. Both the water recovery tank (32) and the oil recovery tank (33) are vertical storage tanks.

8. The fluid system of the oily sludge treatment device according to claim 7, characterized in that, The pump group fluid device (2) also includes an oil pump (210) and a water pump (211). Level gauges are arranged in both the water collection chamber (121) and the oil collection chamber (122). The level gauges can detect the liquid level in real time. When the liquid level in the water collection chamber (121) reaches a predetermined height, the water pump (211) can pump the liquid in the water collection chamber (121) to the recovery tank (32). When the liquid level in the oil collection chamber (122) reaches a predetermined height, the oil pump (210) can pump the liquid in the oil collection chamber (122) to the recovery oil tank (33).

9. The fluid system of an oily sludge treatment device according to any one of claims 1-8, characterized in that, The pump fluid device (2) also includes an electrical control box (214), which is used to control the operation of the fluid system of the oily sludge disposal device.

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