Efficient conveying device for oil-rich coal pyrolysis products

Abstract

The invention provides an efficient conveying device for oil-rich coal pyrolysis products, and belongs to the technical field of underground coal utilization, the efficient conveying device for the oil-rich coal pyrolysis products comprises a first conveying assembly arranged in an oil well and a conveying pipeline arranged at an oil well mouth, and a second conveying assembly is arranged in the conveying pipeline. Heavy coal tar in an oil well can be rapidly and preliminarily cracked into light coal tar through the first conveying assembly, the cracking efficiency is improved, the probability that pyrolysis products block a conveying pipeline is reduced, a first upper spiral blade and a first lower spiral blade can further crush coal particles in the pyrolysis products, the probability that the pyrolysis products block the pipeline is reduced, and the pyrolysis products can be conveyed to the conveying pipeline. And then through the cooperation of the second conveying assembly and the third conveying assembly in the conveying pipeline, the light coal tar entering the conveying pipeline is subjected to secondary cracking, so that the cracking efficiency is further improved, the probability of blockage of pyrolysis products in the conveying pipeline is reduced, and the conveying efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of underground coal utilization, and particularly relates to a high-efficiency conveying device for pyrolysis products of oil-rich coal. BACKGROUND

[0002] Oil-rich coal is a recognized special coal resource. Under the condition of isolation from air in situ, oil-rich coal can be preferentially extracted to extract oil and gas resources in short supply in the country through low-temperature pyrolysis, to generate pyrolysis semicoke that can replace anthracite and coking coal, to realize the conversion of oil-rich coal from fuel to fuel + raw material, and to maximize the retention of solid carbon, reduce carbon dioxide emissions, and reduce the destruction of the surface ecological environment.

[0003] At present, when oil-rich coal is pyrolyzed, the pyrolysis efficiency is low, and the pyrolysis products are prone to blockage in the conveying pipeline, affecting the conveying efficiency. Therefore, a high-efficiency conveying device for pyrolysis products of oil-rich coal is needed to solve this problem. SUMMARY

[0004] To achieve the above purpose, the present application provides a high-efficiency conveying device for pyrolysis products of oil-rich coal, which comprises a first conveying assembly arranged in an oil well and a conveying pipeline arranged at an oil well mouth, wherein the conveying pipeline is provided with a second conveying assembly.

[0005] Further, the first conveying assembly comprises a first upper shaft vertically arranged, a first upper bearing rotatably sleeved at the upper end of the first upper shaft, and a rotating bearing rotatably sleeved at the lower end of the first upper shaft. A first lower shaft is vertically arranged below the rotating bearing, and a first lower bearing is rotatably sleeved at the lower end of the first lower shaft. A first upper helical blade is fixedly sleeved on the first upper shaft, and a first lower helical blade is fixedly sleeved on the first lower shaft.

[0006] Further, the second conveying assembly is located at a vertical part of the conveying pipeline, and comprises a second upper shaft vertically arranged, and a second lower shaft vertically arranged below the second upper shaft. A second upper bearing is rotatably sleeved at the upper end of the second upper shaft, a second lower bearing is rotatably sleeved at the lower end of the second lower shaft, a high-pressure oil tank is arranged between the second upper shaft and the second lower shaft, and a second helical blade is arranged outside the high-pressure oil tank.

[0007] Further, a third conveying assembly is arranged in a horizontal part of the conveying pipeline, and the structure of the third conveying assembly is the same as that of the second conveying assembly.

[0008] Further, the first upper helical blade, the second upper helical blade, and the second helical blade are all made of noble metal catalysts.

[0009] Further, the first upper spiral blade, the second upper spiral blade and the spiral blade bearing of the second spiral blade are all provided with bionic grooves.

[0010] The advantage of the present application is that the present application provides a high-efficiency oil-rich coal pyrolysis product conveying device, which can rapidly and preliminarily crack heavy coal tar in an oil well into light coal tar through the cooperation of the first upper spiral blade and the first lower spiral blade in the first conveying assembly, thereby improving the cracking efficiency and reducing the probability of blockage of the pyrolysis product in the conveying pipeline. In addition, the first upper spiral blade and the first lower spiral blade can also crush coal particles in the pyrolysis product, thereby further reducing the probability of blockage in the pipeline. Then, the light coal tar entering the conveying pipeline is subjected to secondary cracking through the cooperation of the second conveying assembly and the third conveying assembly in the conveying pipeline, thereby further improving the cracking efficiency and greatly reducing the probability of blockage of the pyrolysis product in the conveying pipeline, so as to greatly improve the conveying efficiency.

[0011] The present application will be described in detail below in combination with the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 is a structural schematic diagram of the present application.

[0013] Fig. 2 is a structural schematic diagram of the first conveying assembly of the present application.

[0014] Fig. 3 is a structural schematic diagram of the second conveying assembly of the present application.

[0015] BRIEF DESCRIPTION OF DRAWINGS: 1, oil well; 2, first conveying assembly; 21, first upper shaft; 22, first lower shaft; 23, first upper bearing; 24, first lower bearing; 25, first upper spiral blade; 26, first lower spiral blade; 27, rotating bearing; 3, conveying pipeline; 4, second conveying assembly; 41, second upper shaft; 42, second lower shaft; 43, second upper bearing; 44, second lower bearing; 45, high-pressure oil tank; 46, second spiral blade; 5, third conveying assembly. DETAILED DESCRIPTION

[0016] In order to further illustrate the technical means and effects taken by the present application to achieve the predetermined purpose, the specific implementation, structural features and effects of the present application are described in detail below in combination with the drawings and examples.

[0017] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of the present application.

[0018] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "aligned", "overlapped", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0019] The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features; in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0020] Embodiment 1

[0021] The present embodiment provides a high-efficiency oil-rich coal pyrolysis product conveying device as shown in Figs. 1-3 The present embodiment provides a high-efficiency oil-rich coal pyrolysis product conveying device as shown in Further, the first conveying assembly 2 comprises a first upper shaft 21 arranged vertically, a first upper bearing 23 rotatably sleeved on the upper end of the first upper shaft 21, and a rotating bearing 27 rotatably sleeved on the lower end of the first upper shaft 21; a first lower shaft 22 is vertically arranged below the rotating bearing 27, and a first lower bearing 24 is rotatably sleeved on the lower end of the first lower shaft 22; a first upper helical blade 25 is fixedly sleeved on the first upper shaft 21, and a first lower helical blade 26 is fixedly sleeved on the first lower shaft 22; The second conveying assembly 4 is located at the vertical part of the conveying pipeline 3, and the second conveying assembly 4 comprises a vertically arranged second upper shaft 41, and a second lower shaft 42 is vertically arranged below the second upper shaft 41; a second upper bearing 43 is rotatably sleeved at the upper end of the second upper shaft 41, a second lower bearing 44 is rotatably sleeved at the lower end of the second lower shaft 42, a high-pressure oil tank 45 is arranged between the second upper shaft 41 and the second lower shaft 42, and a second spiral blade 46 is arranged outside the high-pressure oil tank 45, wherein the high-pressure oil tank 45 is in communication with the second spiral blade 46 through an oil path, the oil tank is pressurized after injecting oil, and then the high-pressure oil tank 45 is closed; the first upper spiral blade 25, the second upper spiral blade and the second spiral blade 46 are all made of noble metal catalyst; The horizontal part of the conveying pipeline 3 is provided with a third conveying assembly 5, and the structure of the third conveying assembly 5 is the same as that of the second conveying assembly 4.

[0022] In use, the first conveying assembly 2 is arranged at the bottom of the oil well 1, one of the first upper spiral blade 25 and the first lower spiral blade 26 is arranged as a forward blade, and the other is arranged as a reverse blade, so that the two blades are matched with the rotating bearing 27, so that the first upper spiral blade 25 and the first lower spiral blade 26 are positively and negatively rotated by the pushing force when the stratum fluid flows out, the first upper spiral blade 25 and the first lower spiral blade 26 are made of noble metal catalyst, and the noble metal is preferably platinum alloy, which can be used to preliminarily crack heavy coal tar into light coal tar and reduce the probability of clogging of pyrolysis products in the conveying pipeline 3, and then the light coal tar is pumped from the bottom of the oil well 1 into the conveying pipeline 3, and the light coal tar is cracked again in the conveying pipeline 3 by the second conveying assembly 4 and the third conveying assembly 5, so as to further reduce the probability of clogging of pyrolysis products in the conveying pipeline 3, thereby greatly improving the conveying efficiency.

[0023] The rotating bearing 27 is provided with a bionic oil groove for retaining liquid and reducing the wear of the gear reduction, the bionic groove is a design inspired by the structure of biological bodies in nature, and aims to simulate the characteristics of these structures to achieve specific functional advantages; this design usually involves creating a series of ordered or random pits, grooves or other morphological features on the surface of materials or objects, and the shape, size, depth and arrangement of these features are carefully designed to simulate structures that have been optimized through long-term evolution in nature, for example, the surface of the wings of some insects has tiny pits, which can help reduce air resistance and improve flight efficiency, in engineering and manufacturing, bionic groove technology is used to improve the wear resistance, corrosion resistance, self-cleaning ability and other properties of materials.

[0024] Further, the spiral blade bearings of the first upper spiral blade 25, the second upper spiral blade and the second spiral blade 46 are all provided with bionic grooves.

[0025] The bionic groove arranged on the spiral blade bearing is used for retaining liquid, improving lubricity of the bearing and preventing eccentric wear.

[0026] In addition, the first upper bearing 23, the first lower bearing 24, the second upper bearing 43 and the second lower bearing 44 are self-lubricating bearings, and the specific model is "SF-1 general steel base self-lubricating bearing 1". The self-lubricating bearing is internally provided with high-pressure oil, and the self-lubricating bearing is a porous medium foam structure.

[0027] The present application provides a kind of rich oil coal pyrolysis product high-efficiency conveying device, first by the cooperation of first upper spiral blade 25 and first lower spiral blade 26 in first conveying component 2, so that heavy coal tar in oil well 1 can be quickly preliminary cracking into light coal tar, improve the cracking efficiency, reduce the probability of pyrolysis product in conveying pipeline 3 block, first upper spiral blade 25 and first lower spiral blade 26 can also crush coal particles in pyrolysis product, reduce the probability of block in pipeline, then by the cooperation of second conveying component 4 and third conveying component 4 in conveying pipeline 3, light coal tar in conveying pipeline 3 is secondary cracking, so as to further improve the cracking efficiency, greatly reduce the probability of pyrolysis product in conveying pipeline 3 block, so as to greatly improve the conveying efficiency.

[0028] The above is a further detailed description of the present application in combination with specific preferred embodiments, and the specific implementation of the present application cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, under the premise of not departing from the concept of the present application, a number of simple deductions or substitutions can be made, which should be regarded as belonging to the protection scope of the present application.

Claims

1. A high-efficiency conveying device for oil-rich coal pyrolysis products, characterized in that: It includes a first delivery assembly (2) installed inside the oil well (1) and a delivery pipe (3) installed at the opening of the oil well (1), wherein a second delivery assembly (4) is provided inside the delivery pipe (3).

2. The high-efficiency conveying device for oil-rich coal pyrolysis products as described in claim 1, characterized in that: The first conveying assembly (2) includes a vertically arranged first upper shaft (21), the upper end of the first upper shaft (21) is rotatably sleeved with a first upper bearing (23), and the lower end of the first upper shaft (21) is rotatably sleeved with a rotating bearing (27). A first lower shaft (22) is vertically provided below the rotating bearing (27), and a first lower bearing (24) is rotatably sleeved on the lower end of the first lower shaft (22); The first upper shaft (21) is fixedly sleeved with a first upper helical blade (25), and the first lower shaft (22) is fixedly sleeved with a first lower helical blade (26).

3. The high-efficiency conveying device for oil-rich coal pyrolysis products as described in claim 1, characterized in that: The second conveying assembly (4) is located at the vertical part of the conveying pipe (3). The second conveying assembly (4) includes a vertically arranged second upper shaft (41) and a second lower shaft (42) is vertically arranged below the second upper shaft (41). A second upper bearing (43) is rotatably sleeved at the upper end of the second upper shaft (41), and a second lower bearing (44) is rotatably sleeved at the lower end of the second lower shaft (42). A high-pressure oil chamber (45) is provided between the second upper shaft (41) and the second lower shaft (42), and a second spiral blade (46) is provided outside the high-pressure oil chamber (45).

4. The high-efficiency conveying device for oil-rich coal pyrolysis products as described in claim 3, characterized in that: The horizontal section of the conveying pipe (3) is provided with a third conveying component (5), the structure of which is the same as that of the second conveying component (4).

5. A high-efficiency conveying device for oil-rich coal pyrolysis products as described in claim 2 or 3, characterized in that: The first upper helical blade (25), the second upper helical blade and the second helical blade (46) are all made of precious metal catalysts.

6. The high-efficiency conveying device for oil-rich coal pyrolysis products as described in claim 5, characterized in that: The first upper helical blade (25), the second upper helical blade and the second helical blade (46) all have biomimetic grooves on their helical blade bearings.

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