Rotary vane type oil sludge pyrolysis system

Abstract

The invention discloses a rotary-vane oil sludge pyrolysis system, the rotary-vane oil sludge pyrolysis system comprises a heating base, a pyrolysis mechanism and a recovery mechanism, the heating mechanism is used for providing heat for pyrolysis of oil sludge, the pyrolysis mechanism comprises a pyrolysis chamber and a rotary-vane crushing mechanism, the pyrolysis chamber is communicated with the heating mechanism, the rotary-vane crushing mechanism is communicated with the pyrolysis chamber, and the recovery mechanism is communicated with the rotary-vane crushing mechanism. The pyrolysis chamber is provided with a pyrolysis cavity, the rotary vane crushing mechanism is located in the pyrolysis cavity and used for cutting and crushing the oil sludge, the recycling mechanism is communicated with the pyrolysis cavity so as to recycle high-heat flue gas of the pyrolysis cavity and comprises a recycling cover, a condenser and an oil-water separator, the recycling cover is connected with the pyrolysis chamber, and the condenser is connected with the oil-water separator. The condenser is connected with the recovery cover through a pipeline, and the oil-water separator is connected with the condenser through a pipeline. The rotary-vane oil sludge pyrolysis system provided by the invention has the advantages of high oil sludge treatment efficiency and low energy consumption.

Description

Technical Field

[0001] The invention relates to the technical field of oil sludge recovery, and in particular to a rotary vane oil sludge pyrolysis system. Background Art

[0002] Oil sludge is a mixture of oil, mud, sand and water produced during the oilfield exploitation process, with a water content of more than 90%. Since it contains toxic organic matter that is harmful to the environment, it must be treated harmlessly. Therefore, finding an efficient and reasonable oil sludge treatment technology is of great significance for the sustainable development of oil fields. The treatment efficiency of oil sludge in related technologies is greatly affected by factors such as temperature and pressure, the treatment efficiency is unstable, and the energy consumption is large. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides a rotary vane oil sludge pyrolysis system, which has the advantages of high oil sludge treatment efficiency and low energy consumption.

[0004] According to the rotary vane oil sludge pyrolysis system of the embodiment of the present invention, the rotary vane oil sludge pyrolysis system includes a heating base, a pyrolysis mechanism and a recovery mechanism, the heating mechanism is used to provide heat for the pyrolysis oil sludge, the pyrolysis mechanism includes a pyrolysis chamber and a rotary vane crushing mechanism, the pyrolysis chamber is connected to the heating mechanism, the pyrolysis chamber has a pyrolysis cavity, the rotary vane crushing mechanism is located in the pyrolysis cavity for cutting and crushing the oil sludge, the recovery mechanism is connected to the pyrolysis cavity for recovering the high-temperature flue gas from the pyrolysis cavity, the recovery mechanism includes a recovery hood, a condenser and an oil-water separator, the recovery hood is connected to the pyrolysis chamber, the condenser is connected to the recovery hood through a pipeline, and the oil-water separator is connected to the condenser through a pipeline.

[0005] The rotary vane oil sludge pyrolysis system according to the embodiment of the present invention has the advantages of high oil sludge processing efficiency and low energy consumption. The present application has the following advantages: the oil sludge is continuously stirred and crushed by means of a rotary vane crushing mechanism so that the oil sludge is fully heated and pyrolyzed during the pyrolysis process, the pyrolysis time is shortened, the decomposition efficiency is improved, and the energy consumption is reduced.

[0006] In some embodiments, the pyrolysis chamber includes a heat flow pipe arranged around the pyrolysis cavity, and the heat flow pipe is connected to the heating mechanism.

[0007] In some embodiments, the heat flow pipe is an annular fluid loop.

[0008] In some embodiments, the heating mechanism includes a heater and a delivery pump, the first side of the heater is connected to the delivery pump through a pipeline, the second side of the heater is connected to the heat flow pipe through a pipeline, the delivery pump is connected to the heat flow pipe through a pipeline, and the heater, the delivery pump and the pyrolysis chamber form a loop.

[0009] In some embodiments, the vane crushing mechanism includes a transmission shaft and a plurality of vanes, the plurality of vanes are arranged on the transmission shaft at intervals, the axial direction of the transmission shaft is perpendicular to the plane where the vanes are located, and the transmission shaft is transmission-connected to a driving member.

[0010] In some embodiments, there is a certain distance between the bottom end of the rotary vane and the lower surface of the pyrolysis chamber, and there is a certain distance between the top end of the rotary vane and the upper surface of the pyrolysis chamber.

[0011] In some embodiments, a discharge port is provided at the bottom of the pyrolysis chamber, and a discharge valve is provided at the discharge port.

[0012] In some embodiments, the recovery hood is arranged on the top of the pyrolysis chamber, and the cross-sectional area of ​​the recovery hood decreases as the distance from the pyrolysis chamber increases.

[0013] In some embodiments, an oil pipeline is arranged on the top of the oil-water separator, a drainage pipe is arranged on the bottom of the oil-water separator, an oil production valve is arranged on the oil pipeline, and a separation water valve is arranged on the drainage pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the structure of a rotary vane oil sludge pyrolysis system according to an embodiment of the present invention.

[0015] Figure numerals: 1, oil sludge; 2, rotary vane; 3, transmission shaft; 4, discharge valve; 5, discharge port; 6, delivery pump; 7, heater; 8, thermal fluid; 9, thermal fluid direction; 10, heat flow pipe; 11, conical gas collecting hood; 12, oil-gas mixture; 13, gas pipeline; 14, condenser; 15, oil-water separator; 16, oil production valve; 17, oil pipeline; 18, water separation valve; 19, drain pipe. DETAILED DESCRIPTION

[0016] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0017] According to the rotary vane oil sludge pyrolysis system of the embodiment of the present invention, the rotary vane oil sludge pyrolysis system includes a heating base, a pyrolysis mechanism and a recovery mechanism. The heating mechanism is used to provide heat for the pyrolysis oil sludge 1. The pyrolysis mechanism includes a pyrolysis chamber and a rotary vane crushing mechanism. The pyrolysis chamber is connected to the heating mechanism. The pyrolysis chamber has a pyrolysis cavity. The rotary vane crushing mechanism is located in the pyrolysis cavity and is used to cut and crush the oil sludge 1. The recovery mechanism is connected to the pyrolysis cavity and is used to recover the high-temperature flue gas from the pyrolysis cavity. The recovery mechanism includes a recovery hood 11, a condenser 14 and an oil-water separator 15. The recovery hood 11 is connected to the pyrolysis chamber, the condenser 14 is connected to the recovery hood 11 through a pipeline, and the oil-water separator 15 is connected to the condenser 14 through a pipeline. The heating mechanism is connected to the pyrolysis chamber, and the heating mechanism transports hot fluid 8 to the pyrolysis chamber. The hot fluid 8 releases heat in the pyrolysis chamber. Crushing and cutting the sludge 1 in the pyrolysis chamber can increase the relative heating area of ​​the sludge 1, so that the moisture and volatile oil in the sludge 1 can volatilize. The recovery mechanism can fully collect the flue gas in the pyrolysis chamber through the recovery hood 11. The recovery mechanism processes the flue gas and can reuse the volatile oil in the flue gas as a resource.

[0018] It can be understood that the movement of the rotary vane crushing mechanism in the pyrolysis chamber can drive the sludge 1 away from the main body of the sludge 1, thereby increasing the relative contact surface area between the sludge 1 and the air, which is beneficial to the volatilization of water and volatile oil.

[0019] In some embodiments, the pyrolysis chamber includes a heat flow pipe 10 arranged around the pyrolysis cavity, and the heat flow pipe 10 is connected to the heating mechanism.

[0020] Specifically, the heat flow pipe 10 is arranged around the pyrolysis chamber so that the pyrolysis chamber is fully and evenly heated, and the heat flow pipe 10 is connected to the heating mechanism to receive the hot fluid 8. It can be understood that the heat flow pipe 10 adopts a serpentine coil or the like to increase the contact area between the heat flow pipe 10 and the pyrolysis chamber, thereby improving the heating efficiency.

[0021] In some embodiments, the heat flow pipe 10 is a toroidal fluid loop.

[0022] Specifically, the heat flow pipe 10 adopts an annular fluid loop. When the heating mechanism stops sending out the hot fluid 8, the heat flow pipe 10 can still circulate itself to heat the pyrolysis chamber. The annular fluid loop increases the contact area with the pyrolysis chamber relative to a single pipeline, and the heating efficiency is higher.

[0023] In some embodiments, the heating mechanism includes a heater 7 and a delivery pump 6, the first side of the heater 7 is connected to the delivery pump 6 through a pipeline, the second side of the heater 7 is connected to the heat flow pipe 10 through a pipeline, the delivery pump 6 is connected to the heat flow pipe 10 through a pipeline, and the heater 7, the delivery pump 6 and the pyrolysis chamber form a loop.

[0024] Specifically, the heater 7 is used to heat the medium to form a hot fluid 8, and the hot fluid direction 9 moves from the heater 7 to the delivery pump 6 and then moves from the delivery pump 6 to the pyrolysis chamber. The loop formed between the heater 7, the delivery pump 6 and the pyrolysis chamber can realize the medium circulation and reduce the medium waste, and the waste heat of the medium can also be used to reheat the gas pipe 13 of the recovery mechanism to ensure that the flue gas flows smoothly to the condenser 14.

[0025] In some embodiments, the vane crushing mechanism includes a transmission shaft 3 and a plurality of vanes 2, wherein the plurality of vanes 2 are arranged on the transmission shaft 3 at intervals, wherein the axial direction of the transmission shaft 3 is perpendicular to the plane where the vanes 2 are located, and the transmission shaft 3 is transmission-connected to the driving member.

[0026] Specifically, a plurality of rotors 2 may be arranged at equal intervals on the transmission shaft 3, and the driving member may be a motor installed outside the pyrolysis chamber. The output end of the motor drives the transmission shaft 3 to rotate, and the transmission shaft 3 drives the rotors 2 to rotate.

[0027] Optionally, multiple rotors 2 are inclined relative to the axial direction of the transmission shaft 3, and the multiple rotors 2 form a spiral structure. Driven by the transmission shaft 3, the rotors 2 rotate and thus push the sludge 1 in the pyrolysis chamber to move toward the discharge port 5, so that the sludge 1 in the pyrolysis chamber can keep flowing to prevent the sludge 1 from coking and affecting the pyrolysis in the pyrolysis chamber.

[0028] In some embodiments, there is a certain distance between the bottom end of the rotary vane 2 and the lower surface of the pyrolysis chamber, and there is a certain distance between the top end of the rotary vane 2 and the upper surface of the pyrolysis chamber.

[0029] Specifically, the top and bottom ends of the rotary vane 2 are spaced apart from the pyrolysis chamber to prevent the rotary vane 2 from colliding with the pyrolysis chamber and damaging the equipment.

[0030] In some embodiments, a discharge port 5 is provided at the bottom of the pyrolysis chamber, and a discharge valve 4 is provided at the discharge port 5 .

[0031] Specifically, the discharge port 5 at the bottom of the pyrolysis chamber is used to discharge the dried sludge 1, and the discharge valve 4 is used to control the discharge of the dried sludge 1 to prevent the unpyrolyzed sludge 1 from flowing out.

[0032] In some embodiments, the recovery hood 11 is arranged on the top of the pyrolysis chamber, and the cross-sectional area of ​​the recovery hood 11 decreases as the distance from the pyrolysis chamber increases.

[0033] It can be understood that the recovery hood 11 can be a conical air collecting hood, or a quadrangular pyramid hood, or a hood of other shapes. The recovery hood 11 has a small top and a large bottom structure so that the smoke gathers at the top to reduce smoke escape.

[0034] In some embodiments, an oil pipeline 17 is provided on the top of the oil-water separator 15 , a drainage pipe 19 is provided on the bottom of the oil-water separator 15 , an oil production valve 16 is provided on the oil pipeline 17 , and a separation water valve 18 is provided on the drainage pipe 19 .

[0035] Specifically, the oil-gas mixture 12 forms an oil-water mixture after being cooled in the condenser 14, and the oil-water mixture is separated in the oil-water separator 15. The oil production valve 16 controls the discharge of oil, and the separation water valve 18 can control the oil-water interface height by discharging water.

[0036] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0041] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A rotary vane sludge pyrolysis system, characterized in that: include: A heating mechanism, the heating mechanism is used to provide heat for pyrolysis of oil sludge; A pyrolysis mechanism, the pyrolysis mechanism comprising a pyrolysis chamber and a rotary blade crushing mechanism, the pyrolysis chamber is connected to the heating mechanism, the pyrolysis chamber has a pyrolysis cavity, and the rotary blade crushing mechanism is located in the pyrolysis cavity to cut and crush the oil sludge; A recovery mechanism, wherein the recovery mechanism is connected to the pyrolysis chamber and is used to recover the high-temperature flue gas from the pyrolysis chamber. The recovery mechanism comprises a recovery hood, a condenser and an oil-water separator. The recovery hood is connected to the pyrolysis chamber, the condenser is connected to the recovery hood through a pipeline, and the oil-water separator is connected to the condenser through a pipeline.

2. The rotary vane sludge pyrolysis system according to claim 1, characterized in that: The pyrolysis chamber comprises a heat flow pipe arranged around the pyrolysis cavity, and the heat flow pipe is connected to the heating mechanism.

3. The rotary vane oil sludge pyrolysis system according to claim 2, characterized in that: The heat flow pipe is an annular fluid loop.

4. The rotary vane oil sludge pyrolysis system according to claim 2, characterized in that: The heating mechanism includes a heater and a delivery pump, a first side of the heater is connected to the delivery pump through a pipeline, a second side of the heater is connected to the heat flow pipe through a pipeline, the delivery pump is connected to the heat flow pipe through a pipeline, and the heater, the delivery pump and the pyrolysis chamber form a loop.

5. The rotary vane oil sludge pyrolysis system according to claim 1, characterized in that: The rotary vane crushing mechanism comprises a transmission shaft and a plurality of rotary vanes, wherein the plurality of rotary vanes are arranged on the transmission shaft at intervals, wherein the axial direction of the transmission shaft is perpendicular to the plane where the rotary vanes are located, and the transmission shaft is transmission-connected to a driving member.

6. The rotary vane oil sludge pyrolysis system according to claim 5, characterized in that: There is a certain distance between the bottom end of the rotary vane and the lower surface of the pyrolysis chamber, and there is a certain distance between the top end of the rotary vane and the upper surface of the pyrolysis chamber.

7. The rotary vane sludge pyrolysis system according to claim 1, characterized in that: A discharge port is arranged at the bottom of the pyrolysis chamber, and a discharge valve is arranged at the discharge port.

8. The rotary vane oil sludge pyrolysis system according to claim 1, characterized in that: The recovery hood is arranged on the top of the pyrolysis chamber, and the cross-sectional area of ​​the recovery hood decreases as the distance from the pyrolysis chamber increases.

9. The rotary vane oil sludge pyrolysis system according to claim 1, characterized in that: An oil delivery pipe is arranged on the top of the oil-water separator, a drainage pipe is arranged on the bottom of the oil-water separator, an oil production valve is arranged on the oil delivery pipe, and a separation water valve is arranged on the drainage pipe.

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