An apparatus for combined treatment of oil sands with a biomass furnace

Abstract

The application provides a device for combined treatment of oil sand by using a biomass furnace, which comprises a biomass furnace, a mixer and a vibrating screen separator, wherein the biomass furnace is provided with a hearth, a separator and an ash returner; a first inlet of the mixer is connected with a slag discharge port of the hearth, a second inlet of the mixer is connected with an oil sand bin, a third inlet of the mixer is connected with a dust discharge port of the ash returner, a waste gas outlet of the mixer is connected with a waste gas inlet of the hearth; and the vibrating screen separator is connected with a sand discharge port of the mixer. The hot ash and hot slag discharged from the biomass furnace and the oil sand output from the oil sand bin are mixed in the mixer, the oil sand is dried and pyrolyzed under the heat, the alkaline components in the hot ash break the emulsion and viscosity of the oil sand, the oil sand is finally changed into dry ash sand and waste gas is generated, and the treatment effect is good. The heat of the treated hot slag and the oil gas contained in the oil sand can be fully recovered, the energy utilization rate is improved, and the oil sand is treated as a resource. The device does not pollute the environment, is simple and easy to operate, and has low cost.

Description

Technical Field

[0001] This invention relates to the field of oil sands treatment technology, and in particular to an apparatus for treating oil sands using a biomass furnace. Background Technology

[0002] Oil sands mainly originate from the extraction, refining, storage, and transportation processes of the petroleum industry. Their main components are water, oil, sand and gravel, and many other types of chemical substances.

[0003] Under natural conditions, toxic substances from crude oil in oil sands can seep to the surface under gravity, easily causing soil compaction, affecting the normal growth of surface vegetation, and threatening human health. Oil sands generally have a high crude oil content; if effective means are not adopted to recover them, it will result in a huge waste of my country's petroleum resources. Oil sands are diverse in type and complex in nature, and the corresponding processing technologies and equipment are also showing a trend towards diversification.

[0004] Simple incineration and landfill are the most common oil sands disposal methods due to their ease of implementation. However, they generate secondary pollution and waste resources, and will gradually be replaced by other less polluting and more recyclable technologies, such as supercritical water treatment. The main principle of supercritical water oxidation is to use supercritical water as a reaction medium to oxidize and decompose organic matter. Supercritical water oxidation requires high temperature (400–600℃) and high pressure (30–50 MPa) reaction conditions, which can completely oxidize and decompose organic components within seconds, greatly increasing the oxidation rate. However, this technology has stringent operating requirements, high costs, and small processing capacity, making large-scale promotion difficult at present. Summary of the Invention

[0005] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide an apparatus for the combined treatment of oil sands using a biomass furnace, which can recycle oil sands without causing environmental pollution, is simple to implement, and has low cost.

[0006] This invention provides an apparatus for the combined treatment of oil sands using a biomass furnace, comprising: a biomass furnace, a mixer, and a vibrating screen separator. The biomass furnace has an integrally formed and interconnected furnace chamber, a separator, and an ash return device. The furnace chamber has a feed inlet, a slag discharge outlet, and a waste gas inlet. The top of the separator has a flue gas outlet, and the bottom of the ash return device has an ash discharge outlet. The mixer has a first inlet, a second inlet, a third inlet, a waste gas outlet, and a sand discharge outlet. The first inlet of the mixer is connected to the slag discharge outlet of the furnace chamber, the second inlet of the mixer is connected to the oil sand silo, the third inlet of the mixer is connected to the ash discharge outlet of the ash return device, and the waste gas outlet of the mixer is connected to the waste gas inlet of the furnace chamber. The vibrating screen separator is connected to the sand discharge outlet of the mixer to separate the sand and fine ash discharged from the mixer.

[0007] In some embodiments, the vibrating screen separator has a sand and gravel outlet and a fine ash outlet. The sand and gravel outlet of the vibrating screen separator is connected to the feed inlet of the furnace, and the fine ash outlet of the vibrating screen separator is connected to the fine ash silo.

[0008] In some embodiments, a conveyor and a bucket elevator are connected between the sand and gravel outlet of the vibrating screen separator and the feed inlet of the furnace. The inlet of the conveyor is connected to the sand and gravel outlet of the vibrating screen separator, the outlet of the conveyor is connected to the inlet of the bucket elevator, and the outlet of the bucket elevator is connected to the feed inlet of the furnace.

[0009] In some embodiments, the exhaust port of the separator is connected to a gas treatment device, and the outlet of the gas treatment device is connected to an exhaust pipe.

[0010] In some embodiments, the mixer is provided with a stirring mechanism and a heating device.

[0011] In some embodiments, the stirring mechanism includes a motor, a rotating shaft, and stirring blades. The rotating shaft is arranged in a horizontal direction, the motor is located on one side inside the mixer, the output end of the motor is connected to one end of the rotating shaft and drives the rotating shaft to rotate, and the stirring blades are fixedly connected to the side wall of the rotating shaft.

[0012] In some embodiments, the stirring blade is a spiral stirring blade.

[0013] In some embodiments, the motor is a reversible motor.

[0014] In some embodiments, a first control valve is connected to the connecting pipe between the slag discharge port of the furnace and the first inlet of the mixer, and a second control valve is connected to the connecting pipe between the ash discharge port of the ash return device and the third inlet of the mixer.

[0015] In some embodiments, the gas processing device has a detachably connected gas filter element. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings.

[0017] in:

[0018] Figure 1 This is a schematic diagram of the device for combined treatment of oil sands using a biomass furnace in an embodiment of the present invention;

[0019] Figure label:

[0020] 1-Furnace chamber; 2-Ash return device; 3-Bucket elevator; 4-First control valve; 5-Conveyor; 6-Vibrating screen separator; 7-Fine ash bin; 8-Separator; 9-Second control valve; 10-Oil sand bin; 11-Mixer; 12-Gas treatment device; 13-Exhaust pipe. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] The apparatus for combined processing of oil sands using a biomass furnace according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0023] like Figure 1 As shown in the figure, this invention proposes an apparatus for combined treatment of oil sands using a biomass furnace, comprising: a biomass furnace, a mixer 11, and a vibrating screen separator 6. The biomass furnace has an integrally formed and interconnected furnace chamber 1, a separator 8, and an ash returner 2. The furnace chamber 1 has a feed inlet, a slag discharge outlet, and an exhaust gas inlet. The top of the separator 8 has a flue gas outlet, and the bottom of the ash returner 2 has an ash discharge outlet. The mixer 11 has a first inlet, a second inlet, a third inlet, an exhaust gas outlet, and a sand discharge outlet. The first inlet of the mixer 11 is connected to the slag discharge outlet of the furnace chamber 1, the second inlet of the mixer 11 is connected to the oil sand silo 10, the third inlet of the mixer 11 is connected to the ash discharge outlet of the ash returner 2, and the exhaust gas outlet of the mixer 11 is connected to the exhaust gas inlet of the furnace chamber 1. The vibrating screen separator 6 is connected to the sand discharge outlet of the mixer 11 to separate the sand and gravel and fine ash discharged from the mixer 11.

[0024] This invention, through the installation of a biomass furnace and a mixer 11, mixes the hot ash and slag discharged from the biomass furnace with the oil sand output from the oil sand silo 10 in the mixer 11. The oil sand undergoes drying and pyrolysis upon heating, while the alkaline components such as potassium carbonate in the hot ash demulsify and break down the adhesion of the oil sand, ultimately altering its physical properties and composition, transforming it into dried ash sand and generating exhaust gas. The treatment effect is excellent. After treatment, the heat from the hot slag of the biomass furnace and the oil gas contained in the oil sand can be fully recovered, improving energy utilization and enabling resource-based treatment of the oil sand. It does not cause environmental pollution, is simple to implement, and has low cost.

[0025] In this embodiment of the invention, a vibrating screen separator 6 is used to separate sand and gravel of different particle sizes discharged from the mixer 11.

[0026] In this embodiment of the invention, the exhaust gas outlet of the mixer 11 is connected to the exhaust gas inlet of the furnace 1, so that the exhaust gas is introduced into the biomass furnace for incineration and utilization, thereby improving the resource utilization rate.

[0027] Furthermore, the slag discharge port is located at the bottom of furnace 1.

[0028] In some embodiments, the vibrating screen separator 6 has a sand and gravel outlet and a fine ash outlet. The sand and gravel outlet of the vibrating screen separator 6 is connected to the feed inlet of the furnace 1, and the fine ash outlet of the vibrating screen separator 6 is connected to the fine ash silo 7. The large-diameter sand and gravel discharged from the vibrating screen separator 6 is periodically fed into the biomass furnace to replenish the bed material, while the small-diameter fine ash is directly fed into the fine ash silo 7 for storage and recycling.

[0029] In some embodiments, a conveyor 5 and a bucket elevator 3 are connected between the sand and gravel outlet of the vibrating screen separator 6 and the feed inlet of the furnace 1. The inlet of the conveyor 5 is connected to the sand and gravel outlet of the vibrating screen separator 6, the outlet of the conveyor 5 is connected to the inlet of the bucket elevator 3, and the outlet of the bucket elevator 3 is connected to the feed inlet of the furnace 1.

[0030] In some embodiments, the exhaust port of the separator 8 is connected to the gas treatment device 12, and the outlet of the gas treatment device 12 is connected to the exhaust pipe 13. After being treated by the gas treatment device 12, the gas is discharged into the atmosphere without causing air pollution.

[0031] In some embodiments, the mixer 11 is equipped with a stirring mechanism and a heating device. The stirring mechanism ensures that the oil sand, hot ash, and hot slag in the mixer 11 are mixed evenly, fully utilizing the heat from the hot ash and hot slag. The heating device allows for auxiliary heating when the heat within the mixer 11 is insufficient.

[0032] In some embodiments, the stirring mechanism includes a motor, a rotating shaft, and stirring blades. The rotating shaft is arranged in a horizontal direction, the motor is located on one side inside the mixer 11, the output end of the motor is connected to one end of the rotating shaft and drives the rotating shaft to rotate, and the stirring blades are fixedly connected to the side wall of the rotating shaft.

[0033] In some embodiments, the stirring blades are spiral stirring blades. This can improve stirring efficiency and make the oil sand mixed more evenly with hot ash and hot slag.

[0034] In some embodiments, the motor is a reversible motor. This allows the spiral stirring blades to alternate between forward and reverse rotation, further improving the uniformity of the stirring.

[0035] In some embodiments, a first control valve 4 is connected to the connecting pipe between the slag discharge port of the furnace 1 and the first inlet of the mixer 11, and a second control valve 9 is connected to the connecting pipe between the ash discharge port of the ash return device 2 and the third inlet of the mixer 11. By setting the first control valve 4, the hot slag in the furnace 1 is allowed to accumulate to a certain weight before being discharged into the mixer 11. By setting the second control valve 9, the hot ash in the ash return device 2 is allowed to accumulate to a certain weight before being discharged into the mixer 11.

[0036] In some embodiments, the gas processing device 12 includes a detachably connected gas filter element. This allows for easy replacement of the gas filter element when it becomes unusable.

[0037] Furthermore, the gas processing device 12 can be equipped with two independent gas filter elements. When one of the gas filter elements needs to be replaced, the exhaust pipe can be switched to the other gas filter element, so that the system can continue to operate.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An apparatus for co-processing oil sands using a biomass furnace, characterized in that, include: A biomass furnace, wherein the biomass furnace has an integrally set and interconnected furnace chamber, separator and ash return device, the furnace chamber has a feed inlet, a slag discharge outlet and a waste gas inlet, the top of the separator has a flue gas outlet and the bottom of the ash return device has an ash discharge outlet; A mixer having a first inlet, a second inlet, a third inlet, an exhaust gas outlet, and a sand discharge port; the first inlet of the mixer is connected to the slag discharge port of the furnace; the second inlet of the mixer is connected to the oil sand bin; the third inlet of the mixer is connected to the ash discharge port of the ash return device; and the exhaust gas outlet of the mixer is connected to the exhaust gas inlet of the furnace. A vibrating screen separator is connected to the sand discharge port of the mixer to separate the sand and gravel and fine ash discharged from the mixer; the vibrating screen separator has a sand and gravel outlet and a fine ash outlet, the sand and gravel outlet of the vibrating screen separator is connected to the feed inlet of the furnace, and the fine ash outlet of the vibrating screen separator is connected to the fine ash silo. A conveyor and a bucket elevator are connected between the sand and gravel outlet of the vibrating screen separator and the feed inlet of the furnace. The inlet of the conveyor is connected to the sand and gravel outlet of the vibrating screen separator, the outlet of the conveyor is connected to the inlet of the bucket elevator, and the outlet of the bucket elevator is connected to the feed inlet of the furnace.

2. The apparatus for combined treatment of oil sands using a biomass furnace according to claim 1, characterized in that, The exhaust port of the separator is connected to a gas treatment device, and the outlet of the gas treatment device is connected to an exhaust pipe.

3. The apparatus for combined treatment of oil sands using a biomass furnace according to claim 1, characterized in that, The mixer is equipped with a stirring mechanism and a heating device.

4. The apparatus for combined treatment of oil sands using a biomass furnace according to claim 3, characterized in that, The stirring mechanism includes a motor, a rotating shaft, and stirring blades. The rotating shaft is arranged in a horizontal direction. The motor is located on one side inside the mixer. The output end of the motor is connected to one end of the rotating shaft and drives the rotating shaft to rotate. The stirring blades are fixedly connected to the side wall of the rotating shaft.

5. The apparatus for combined treatment of oil sands using a biomass furnace according to claim 4, characterized in that, The stirring blade is a spiral stirring blade.

6. The apparatus for combined treatment of oil sands using a biomass furnace according to claim 4, characterized in that, The motor is a reversible motor.

7. The apparatus for combined treatment of oil sands using a biomass furnace according to claim 1, characterized in that, A first control valve is connected to the connecting pipe between the slag discharge port of the furnace and the first inlet of the mixer, and a second control valve is connected to the connecting pipe between the ash discharge port of the ash return device and the third inlet of the mixer.

8. The apparatus for combined treatment of oil sands using a biomass furnace according to claim 2, characterized in that, The gas processing device has a detachably connected gas filter element.

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