Discharging device of hot phase separation equipment

Abstract

The utility model provides a discharge device of hot phase separation equipment in the technical field of oily sludge resourceful treatment in the petrochemical industry, which comprises a screw conveyer, a discharge valve and a water delivery pipe, a screw shaft is arranged in the screw conveyer, a screw blade is arranged on the screw shaft, a plurality of notches are distributed on the screw blade at equal intervals, and the discharge valve is connected with the water delivery pipe. One side of each notch is fixedly connected with a scraping plate; a feeding port is formed in the top of one end of the spiral conveyor, a discharging port is further formed in the top of the spiral conveyor, a discharging port is formed in the end, away from the slag discharging port, of the bottom of the spiral conveyor, and the discharging port is connected with the top of the discharging valve; nozzles are arranged at the bottom of the water conveying pipe in the spiral conveyor and right face the discharging opening, pyrolysis gas and pyrolysis residues are discharged from different outlets, and oily sludge treatment and energy recovery are achieved; the pushing speed of the oily sludge is slowed down through the notches in the spiral blades, pyrolysis gas can be fully discharged through the scrapers, cooling and dust removal are facilitated through the water conveying pipes, and the water consumption for spraying and dust removal is reduced.

Description

Technical Field

[0001] This utility model relates to the field of resource utilization technology for oily sludge in the petrochemical industry, specifically a discharge device for a thermal phase separation equipment. Background Technology

[0002] Oily sludge is a major pollutant generated during crude oil extraction, storage, gathering, processing, and produced fluid treatment. It typically consists of water, crude oil, and particulate matter. Due to its high content of organic pollutants such as cycloalkanes, benzene compounds, and polycyclic aromatic hydrocarbons, as well as inorganic pollutants primarily composed of heavy metals like copper, chromium, and mercury, and salts, and harmful microorganisms symbiotic with the sludge, it is classified as hazardous waste. If not treated promptly and appropriately, it will have varying degrees of impact on the surrounding environment. Therefore, the harmless, reduced-volume, and resource-based treatment technologies for oily sludge will become an inevitable trend in sludge treatment technology development. For oily sludge with high oil content, advanced recycling technologies can recover most of the oil, achieving environmental remediation and pollution prevention while also yielding certain economic benefits.

[0003] Continuous rotary thermal phase separation technology for oily sludge, also known as pyrolysis technology, is a process that uses high-temperature heating to cause the organic matter in oily sludge to undergo a cracking reaction, converting it into gaseous, liquid, and solid products. The aim is to maximize the recovery of valuable components from oily sludge and reduce its environmental pollution. However, currently, blockages are prone to occur during the discharge of pyrolysis residue after thermal phase separation of oily sludge, which is difficult to clean. Furthermore, the pyrolysis gas generated after the pyrolysis of oily sludge is easily discharged along with the pyrolysis residue, resulting in a waste of resources.

[0004] For example, Chinese Patent Publication No. CN211254538U discloses a device for discharging, cooling, and dust removal of solid residue from thermal phase separation, including a discharge spiral device and a discharge spray spiral device. The discharge spiral device and the discharge spray spiral device are connected. The discharge spiral device has a first spiral shaft, a material chamber, and a jacketed chamber. The material chamber is sleeved on the first spiral shaft, and the jacketed chamber is sleeved outside the material chamber. The first spiral shaft is used to transport the material in the material chamber. A first inlet is provided at one end of the material chamber, extending through the jacketed chamber to the outside of the jacketed chamber. A first outlet is provided at the other end of the material chamber, extending through the jacketed chamber to the outside of the jacketed chamber. Outside the cavity, a first water inlet is provided at one end of the jacket cavity, and a first water outlet is provided at the other end of the jacket cavity. The discharge spraying spiral device is equipped with a spraying component, which is used to spray water onto the material. Before spraying water to humidify and remove dust from high-temperature materials, the material is cooled down to reduce the amount of spraying water and prevent water vapor from carrying dust and causing serious secondary pollution. However, after long-term use, the first spiral shaft and the discharge spraying spiral device are prone to pyrolysis residue adhesion and blockage, which is difficult to clean and affects the rotation of the first and second spiral shafts. In addition, during the process of conveying oily sludge material on the first spiral shaft, pyrolysis gas is not easy to be extracted, resulting in resource waste. Summary of the Invention

[0005] The technical problem to be solved by this utility model is how to solve the problems of pyrolysis residue blockage and the inability to fully extract pyrolysis gas. The purpose of this utility model is to provide a discharge device for a thermal phase separation equipment that can fully discharge pyrolysis gas and make maximum use of spray water for dust removal.

[0006] The technical solution adopted by this utility model is as follows: a discharge device for a thermal phase separation equipment, including a screw conveyor, a screw shaft inside the screw conveyor, the two ends of the screw shaft being rotatably connected to the two ends of the screw conveyor, a screw blade on the screw shaft, a discharge valve and a water pipe, multiple notches evenly spaced on the screw blades, and a scraper fixedly connected to one side of each notch; a feed inlet is provided at the top of one end of the screw conveyor, an exhaust port is also provided at the top of the screw conveyor, and a discharge port is also provided at the top of the screw conveyor; a discharge port is provided at the bottom of the end of the screw conveyor away from the feed inlet, and the discharge port is connected to the top of the discharge valve; one end of the water pipe extends through the screw conveyor and into the screw conveyor, and a nozzle is provided at the bottom of the water pipe inside the screw conveyor, with all nozzles facing the discharge port.

[0007] The discharge device of the thermal phase separation equipment provided by this utility model can achieve the following beneficial effects:

[0008] (1) The pyrolysis gas and pyrolysis residue generated by the thermal desorption of oily sludge during the treatment process are discharged from different outlets through the exhaust port and the discharge port. During operation, the oily sludge is concentrated below the spiral shaft. The pyrolysis gas rises with the hot air and is discharged from the exhaust port. The pyrolysis residue is pushed by the spiral blades and discharged from the discharge port. The pyrolysis residue can be landfilled or used to prepare porous solid adsorbents. After cooling, the pyrolysis gas yields liquid oil resources and gaseous fuel synthesis gas. During the discharge process, the treatment of oily sludge and energy recovery are achieved.

[0009] (2) The spiral blades, the notches on the spiral blades and the scrapers on the notches can slow down the speed at which the oily sludge is pushed by the spiral blades. At the same time, the scrapers can stir the oily sludge, so that the oily sludge can be fully pyrolyzed and the pyrolysis gas can be fully discharged.

[0010] (3) While stirring the oily sludge, the scraper can scrape off the sludge attached to the bottom of the screw conveyor, preventing solid particles generated by the pyrolysis of oily sludge from causing blockage, thereby affecting downstream equipment or reducing the quality of pyrolysis oil and pyrolysis gas.

[0011] (4) The solid particles generated after pyrolysis fall into the top of the discharge valve. The high-temperature solid particles are cooled and dusted by the nozzle on the water supply pipe to prevent the solid particle residue from being discharged directly and causing pollution. The dust reduction effect is good. Since the discharge valve is intermittent, the water consumption of the spray dust reduction device can also be reduced.

[0012] Preferably, the exhaust port is located between the feed inlet and the discharge outlet and is close to the discharge outlet.

[0013] By placing the exhaust port close to the discharge port, it is easier to collect pyrolysis gas through the exhaust port. After the pyrolysis gas is discharged, the slag is discharged, which can reduce the amount of pyrolysis gas discharged with the pyrolysis slag and reduce resource waste.

[0014] Preferably, a conveying motor is fixedly connected to the end of the screw conveyor away from the discharge port, a gearbox is connected to the power output end of the conveying motor, a conductor rotor is provided on the power output shaft of the gearbox, a permanent magnet rotor is provided at one end of the screw shaft, and the conductor rotor and the permanent magnet rotor form a magnetic coupler.

[0015] The oily sludge is pushed and stirred by a conveyor motor combined with magnetic force to drive the spiral shaft to rotate at low speed. The magnetic coupler avoids mechanical wear and friction, and automatically limits the maximum torque to prevent deformation and damage to the spiral blades or the scrapers on the spiral blades.

[0016] Preferably, the spiral blades are disposed on the spiral shaft at one end near the permanent magnet rotor, and the edge of the spiral blades at the end near the discharge port coincides with the edge of the discharge port.

[0017] Limiting the length of the spiral blades reduces the production cost of the equipment and prevents the water sprayed from the nozzles from falling onto the spiral blades, thus preventing the water from being scattered during the rotation of the spiral blades and ensuring the cooling and dust removal effect.

[0018] Preferably, the total length of the scrapers is greater than the axial length of the helical blades.

[0019] Because the scrapers are evenly spaced, when the total length of the scrapers is greater than the axial length of the spiral blades, every part of the bottom of the screw conveyor can be scraped by the scrapers, preventing pyrolysis slag from accumulating in the screw conveyor.

[0020] Preferably, the discharge valve is provided with a rotating shaft, on which multiple insert plates are installed in a ring at equal intervals, and the distance between the ends of two adjacent insert plates is greater than the width of the discharge port.

[0021] The rotating shaft drives multiple plates to rotate, and two adjacent plates are used to catch the pyrolysis slag and spray water, which slows down the falling speed of the pyrolysis slag and prevents the pyrolysis slag from being directly discharged and causing secondary pollution.

[0022] Preferably, a geared motor is fixedly connected to the discharge valve, and the power output shaft of the geared motor is connected to the rotating shaft in the discharge valve.

[0023] The geared motor slowly rotates the shaft of the discharge valve, thereby causing multiple baffles to rotate slowly. This prevents the discharge from being too fast, which could result in the spray water being discharged without mixing with the pyrolysis residue, causing secondary pollution, or the pyrolysis gas being discharged from the discharge port, resulting in waste.

[0024] Preferably, the bottom of the discharge valve is provided with a discharge cover, the length and width of which are greater than the length and width of the discharge port.

[0025] By making the length and width of the discharge hood greater than the length and width of the discharge port, the lower end of the discharge hood has a larger area than the upper end, which facilitates the discharge of pyrolysis slag, prevents pyrolysis slag blockage, and facilitates the centralized collection of pyrolysis slag. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is the front view from the main perspective of this utility model;

[0028] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0029] Figure 3 This is a utility model Figure 1 Sectional view at point AA;

[0030] Figure 4 This is a schematic diagram of the spiral shaft in this utility model.

[0031] Reference numerals: 1-Screw conveyor, 11-Inlet, 12-Exhaust port, 13-Discharge port, 14-Water pipe, 141-Nozzle, 15-Conveyor motor, 151-Gearbox, 152-Conductor rotor, 2-Screw shaft, 21-Permanent magnet rotor, 22-Screw blade, 221-Notch, 222-Scraper, 3-Discharge valve, 31-Rotating shaft, 32-Insulator plate, 33-Gear motor, 34-Discharge hood. Detailed Implementation

[0032] The following will be combined with the appendix Figure 1-4The technical solution of this utility model is clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Example 1

[0035] The following description, in conjunction with specific embodiments, provides further details. Figure 1-4 As shown, this embodiment is a discharge device for a thermal phase separation equipment, including a screw conveyor 1. A screw shaft 2 is installed inside the screw conveyor 1, with both ends of the screw shaft 2 rotatably connected to both ends of the screw conveyor 1. The screw shaft 2 is equipped with screw blades 22. It also includes a discharge valve 3 and a water pipe 14. Multiple notches 221 are evenly spaced on the screw blades 22, and scrapers 222 are fixedly connected to one side of each notch 221. A feed inlet 11 is located at the top of one end of the screw conveyor 1, and an exhaust port 12 is also located at the top of the screw conveyor 1. A discharge port 13 is located at the bottom of the end of the screw conveyor 1 furthest from the feed inlet 11, and the discharge port 13 is connected to the top of the discharge valve 3. One end of the water pipe 14 extends through the screw conveyor 1 into the screw conveyor 1. A nozzle 141 is located at the bottom of the water pipe 14 inside the screw conveyor 1, and all nozzles 141 face the discharge port 13. The pyrolysis gas and pyrolysis residue are discharged through the discharge port 13. Discharged from different outlets, the pyrolysis residue can be landfilled or used to prepare porous solid adsorbents. After cooling, the pyrolysis gas yields liquid oil resources and gaseous fuel synthesis gas. During the discharge process, oily sludge is treated and resources are recovered. The spiral blades 22, the notches 221 on the spiral blades 22, and the scrapers 222 on the notches 221 slow down the speed at which the oily sludge is pushed by the spiral blades 22. At the same time, the scrapers 222 stir the oily sludge, allowing it to fully pyrolyze and facilitating the full discharge of pyrolysis gas. They also scrape off the sludge attached to the bottom of the screw conveyor 1, preventing solid particles generated from the pyrolysis of oily sludge from causing blockage. The solid particles generated after pyrolysis fall to the top of the discharge valve 3. The high-temperature solid particles are cooled and dusted by the nozzles 141 on the water pipe 14, preventing the solid particle residue from being directly discharged and causing pollution. This also reduces the water consumption of the spray dust suppression device.

[0036] Reference Figure 1-2As shown, in this embodiment, the exhaust port 12 is located between the feed port 11 and the discharge port 13 and is close to the discharge port 13. By making the exhaust port 12 close to the discharge port 13, it is convenient to collect pyrolysis gas through the exhaust port 12. After the pyrolysis gas is discharged, the slag is discharged, which can reduce the pyrolysis gas from being discharged along with the pyrolysis slag and reduce resource waste.

[0037] Reference Figure 1-2 As shown, in this embodiment, a conveying motor 15 is fixedly connected to the end of the screw conveyor 1 away from the discharge port 13. A reduction gearbox 151 is connected to the power output end of the conveying motor 15. A conductor rotor 152 is provided on the power output shaft of the reduction gearbox 151. A permanent magnet rotor 21 is provided at one end of the screw shaft 2. The conductor rotor 152 and the permanent magnet rotor 21 form a magnetic coupler. The conveying motor 15, combined with the magnetic coupler, drives the screw shaft 2 to rotate at low speed to push and stir the oily sludge. The magnetic coupler avoids mechanical wear and friction, and automatically limits the maximum torque to prevent the screw blades 22 or the scrapers 222 on the screw blades 22 from deforming and being damaged.

[0038] Reference Figure 2 As shown, in this embodiment, the spiral blade 22 is disposed on the spiral shaft 2 at one end near the permanent magnet rotor 21, and the edge of the spiral blade 22 at the end near the discharge port 13 coincides with the edge of the discharge port 13, which limits the length of the spiral blade 22, reduces the production cost of the spiral blade 22, and at the same time prevents the water sprayed from the nozzle 141 from falling onto the spiral blade 22, preventing the sprayed water from being dispersed during the rotation of the spiral blade 22, thereby ensuring the cooling and dust removal effect.

[0039] Reference Figure 4 As shown, in this embodiment, the total length of the scrapers 222 is greater than the axial length of the spiral blades 22. Since the scrapers 222 are distributed at equal intervals, when the total length of the scrapers 222 is greater than the axial length of the spiral blades 22, every part of the bottom of the screw conveyor 1 can be scraped by the scrapers 222, preventing the pyrolysis slag from accumulating in the screw conveyor 1.

[0040] Reference Figure 2 As shown, in this embodiment, the discharge valve 3 is provided with a rotating shaft 31, and multiple insert plates 32 are installed circumferentially and equidistantly on the rotating shaft 31. The distance between the ends of two adjacent insert plates 32 is greater than the width of the discharge port 13. The rotating shaft 31 drives the multiple insert plates 32 to rotate, and the adjacent insert plates 32 are used to receive the pyrolysis slag and spray water, thereby slowing down the falling speed of the pyrolysis slag and preventing the pyrolysis slag from being directly discharged and causing secondary pollution.

[0041] Reference Figure 1As shown, in this embodiment, a reduction motor 33 is fixedly connected to the discharge valve 3. The power output shaft of the reduction motor 33 is connected to the rotating shaft 31 in the discharge valve 3. The reduction motor 33 drives the rotating shaft 31 of the discharge valve 3 to rotate slowly, thereby mobilizing multiple baffles 32 to rotate slowly. This prevents the discharge from being too fast, which would cause the spray water to be discharged together with the pyrolysis residue before mixing, resulting in secondary pollution, or the pyrolysis gas to be discharged from the discharge port 13, resulting in waste.

[0042] Reference Figure 1-3 As shown in any figure, in this embodiment, the bottom of the discharge valve 3 is provided with a discharge cover 34. The length and width of the discharge cover 34 are both greater than the length and width of the discharge port 13. By making the length and width of the discharge cover 34 greater than the length and width of the discharge port 13, the lower end of the discharge is larger than the upper end, which facilitates the discharge of pyrolysis slag, prevents pyrolysis slag blockage, and facilitates the centralized collection of pyrolysis slag.

[0043] Example 2

[0044] During operation, oily sludge heated at high temperature enters the screw conveyor 1 through the feed inlet 11. The conveyor motor 15 and the reduction motor 33 are then started. The conveyor motor 15, after its speed is reduced by the reduction gearbox 151, drives the conductor rotor 152 to rotate. The conductor rotor 152 drives the permanent magnet rotor 21 at the end of the screw shaft 2 to rotate. Overload protection is provided by the magnetic coupler formed by the conductor rotor 152 and the permanent magnet rotor 21. The rotation of the screw shaft 2 then drives the spiral blades 22 on the screw shaft 2 to rotate, and the spiral blades 22 propel the oily sludge from the feed inlet... 11 Pushed towards the discharge port 13; Since there are multiple notches 221 evenly distributed on the spiral blade 22, and scrapers 222 are fixedly connected to each notch 221, the spiral blade 22 stirs the oily sludge through the scrapers 222 during rotation, which facilitates the full release of pyrolysis gas in the high-temperature oily sludge and discharges it from the exhaust port 12. The pyrolysis gas is collected by installing a negative pressure suction device at the exhaust port 12. At the same time, the scrapers 222 can also scrape off the oily sludge attached to the bottom of the screw conveyor 1 during rotation.

[0045] The pyrolysis residue, after being discharged from the pyrolysis gas, falls above the discharge valve 3 under the pushing action of the spiral blades 22. The pyrolysis residue is received by the insert plate 32 in the discharge valve 3. At the same time, the water supply pipe 14 delivers spray water into the screw conveyor 1 and sprays it onto the discharge valve 3 from the nozzle 141 to cool and remove dust from the pyrolysis residue. Since the edge of the spiral blades 22 is aligned with the edge of the discharge port 13 and does not extend all the way to the inner wall of the end of the screw conveyor 1, the spray water will not be affected by the spiral blades 22 and will not change the spray direction. This facilitates the thorough mixing of the pyrolysis residue and the spray water, resulting in good dust removal effect and reducing the amount of water used for dust suppression.

[0046] When the geared motor 33 rotates, it drives the rotating shaft 31 to rotate slowly. The rotating shaft 31 drives multiple insert plates 32 to rotate simultaneously. The mixture of pyrolysis residue and spray water located above the rotating shaft 31 is discharged from the discharge port 13 when it rotates below the rotating shaft 31. It is then collected by the discharge hood 34. The insert plates 32 that rotate to the top of the rotating shaft 31 continue to close the discharge port 13 located above the discharge valve 3, and continue to receive the pyrolysis residue and spray water. Through intermittent discharge, the pyrolysis gas is prevented from being discharged from the discharge port 13 along with the pyrolysis residue. The discharge of pyrolysis residue is smooth and will not cause blockage. It is convenient to use, does not cause secondary pollution, and also reduces the water consumption during spray dust suppression.

[0047] The directional terms used in this utility model, such as "center," "up," "down," "left," "right," "vertical," "horizontal," "inner," and "outer," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A discharge device for a thermal phase separation equipment, comprising a screw conveyor (1), wherein a screw shaft (2) is provided inside the screw conveyor (1), the two ends of the screw shaft (2) are rotatably connected to the two ends of the screw conveyor (1), and screw blades (22) are provided on the screw shaft (2), characterized in that: It also includes a discharge valve (3) and a water pipe (14). Multiple notches (221) are arranged at equal intervals on the spiral blades (22). A scraper (222) is fixedly connected to one side of each notch (221). A feed inlet (11) is provided at the top of one end of the spiral conveyor (1). An exhaust port (12) is also provided at the top of the spiral conveyor (1). A discharge port is also provided at the top of the spiral conveyor (1). A discharge port (13) is provided at the bottom of the end of the spiral conveyor (1) away from the feed inlet (11). The discharge port (13) is connected to the top of the discharge valve (3). One end of the water pipe (14) extends through the spiral conveyor (1) and into the spiral conveyor (1). A nozzle (141) is provided at the bottom of the water pipe (14) inside the spiral conveyor (1). The nozzles (141) are all facing the discharge port (13).

2. The discharge device of the thermal phase separation equipment according to claim 1, characterized in that: The exhaust port (12) is located between the feed port (11) and the discharge port (13) and is close to the discharge port (13).

3. The discharge device of the thermal phase separation equipment according to claim 2, characterized in that: The screw conveyor (1) is fixedly connected to a conveying motor (15) at one end away from the discharge port (13). The power output end of the conveying motor (15) is connected to a gearbox (151). A conductor rotor (152) is provided on the power output shaft of the gearbox (151). A permanent magnet rotor (21) is provided at one end of the screw shaft (2). The conductor rotor (152) and the permanent magnet rotor (21) form a magnetic coupler.

4. The discharge device of the thermal phase separation equipment according to claim 1, characterized in that: The spiral blade (22) is disposed on the spiral shaft (2) at one end near the permanent magnet rotor (21), and the edge of the spiral blade (22) at the end near the discharge port (13) coincides with the edge of the discharge port (13).

5. The discharge device of the thermal phase separation equipment according to claim 1, characterized in that: The total length of the scrapers (222) is greater than the axial length of the spiral blades (22).

6. The discharge device of the thermal phase separation equipment according to claim 1, characterized in that: The discharge valve (3) is provided with a rotating shaft (31), and multiple insert plates (32) are installed in a ring at equal intervals on the rotating shaft (31). The distance between the ends of two adjacent insert plates (32) is greater than the width of the discharge port (13).

7. The discharge device of the thermal phase separation equipment according to claim 6, characterized in that: A geared motor (33) is fixedly connected to the discharge valve (3), and the power output shaft of the geared motor (33) is connected to the rotating shaft (31) in the discharge valve (3).

8. The discharge device of the thermal phase separation equipment according to claim 1, characterized in that: The bottom of the discharge valve (3) is provided with a discharge cover (34), the length and width of which are greater than the length and width of the discharge port (13).

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