A new rotary kiln pulverized coal pyrolysis system arrangement structure

Abstract

The application is a new rotary kiln pulverized coal pyrolysis system arrangement structure, and relates to the technical field of pulverized coal pyrolysis. It comprises a drying furnace, a dry distillation furnace and a pyrolysis and cooling device arranged on the ground in sequence, a drying coal hopper is arranged above the drying furnace and the dry distillation furnace for feeding, and further comprises: an elevator, the elevators are arranged above the drying coal hoppers of the drying furnace and the dry distillation furnace and above the pyrolysis and cooling device for conveying materials; a support frame, the support frame is built on the ground to support the drying coal hoppers above the drying furnace and the dry distillation furnace and support the pyrolysis and cooling device; a walking channel structure, the walking channel structure is arranged on the support frame for people to walk; and a support structure, the support structure is arranged on the support frame to fix and support the elevators.

Description

Technical Field

[0001] This invention relates to the field of pulverized coal pyrolysis technology, and in particular to a novel rotary kiln pulverized coal pyrolysis system layout structure. Background Technology

[0002] Coal pyrolysis is the process by which coal decomposes under anaerobic conditions to produce coal gas, tar, and semi-coke. As a core upstream link in the coal chemical industry chain, its reaction conditions directly affect subsequent conversion efficiency. Coal pyrolysis involves three substantial transformation stages: the first stage (room temperature to 300℃) mainly removes adsorbed moisture and a small amount of volatile matter, while the coal body retains its original form; the second stage (300-600℃) involves the formation and solidification of colloids, generating semi-coke with a porous structure; the third stage (600-1000℃) involves further decomposition and condensation of the semi-coke, ultimately forming coke with a carbon content >92%.

[0003] At present, most rotary kiln pulverized coal pyrolysis processes adopt a flow-type layout, consisting of a first stage of drying, a second stage of dry distillation, a third stage of gas extraction, and a fourth stage of cooling. This system layout has problems such as excessively high equipment height, difficult civil construction, high equipment inspection and maintenance costs, and increased investment and operating costs.

[0004] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop a new type of rotary kiln pulverized coal pyrolysis system layout structure. Summary of the Invention

[0005] The purpose of this invention is to provide a novel rotary kiln pulverized coal pyrolysis system layout structure to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] The present invention discloses a novel rotary kiln pulverized coal pyrolysis system layout, comprising a drying furnace, a retorting furnace, and a pyrolysis and cooling device arranged sequentially on the ground. A drying coal hopper is provided above the drying furnace and the retorting furnace for feeding the coal. The system also includes:

[0008] Bucket elevators are installed above the dry coal hoppers of the drying furnace and the distillation furnace, as well as above the pyrolysis and cooling device, for conveying materials.

[0009] A support frame, erected on the ground, is used to support the dry coal hopper above the drying furnace and the distillation furnace, and to support the pyrolysis and cooling device.

[0010] A walking passage structure is provided on the support frame for people to walk on;

[0011] And a support structure, which is mounted on the support frame to fix and support the bucket elevator.

[0012] Furthermore, the support frame is a steel structure support.

[0013] Furthermore, the dry coal hopper is fixedly connected to the support frame by bolts.

[0014] Furthermore, the bucket elevator is a closed-type bucket elevator.

[0015] Furthermore, the bottoms of the drying furnace, the distillation furnace, and the support frame are all supported by a cement foundation.

[0016] Furthermore, the height of the support frame supporting the pyrolysis and cooling device is higher than the height of the dry coal hopper.

[0017] Furthermore, the walking passage structure includes a protective fence erected on the outer perimeter of the top of the support frame, and a step for people to walk on is provided on the inner side of the protective fence;

[0018] It also includes a first travel channel disposed at the upper end between the two adjacent support frames, and a second travel channel disposed at the lower end between the two adjacent support frames and located above the drying furnace and the distillation furnace;

[0019] An inclined staircase is constructed between the top of the support frame supporting the pyrolysis and cooling device and the top of the adjacent support frame.

[0020] Furthermore, a ladder is provided on one side of the support frame for people to climb into the protective fence, a lifting bracket is provided on one side of the ladder, a lifting hoist is provided on the top of the lifting bracket, and a lifting platform is provided on the lifting bracket below the lifting hoist. The lifting platform is driven to rise and fall by the lifting hoist.

[0021] Furthermore, a suspended basket is mounted on the second travel channel, and the suspended basket moves on the second travel channel via concave wheels on the mounting frame.

[0022] Furthermore, the support structure includes connecting brackets disposed on the top and sides of the support frame, the connecting brackets being fixedly connected to the bucket elevator to fix and support the bucket elevator.

[0023] In the above technical solution, the novel rotary kiln pulverized coal pyrolysis system layout structure provided by the present invention has the following beneficial effects:

[0024] This structure is designed for rotary kiln pulverized coal pyrolysis processes, featuring a layout suitable for civil engineering, installation, operation, and maintenance. A closed bucket elevator is used for material conveying (one in operation and one on standby), ensuring economical and reliable operation. An integrated frame support structure supports the flow-line layout, effectively reducing equipment installation height, minimizing civil engineering investment, facilitating operation and maintenance, improving maintenance convenience, and reducing maintenance costs. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0026] Figure 1 This is a schematic diagram of the layout structure of a novel rotary kiln pulverized coal pyrolysis system provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the distribution of the walking channel structure and support structure on the support frame of a novel rotary kiln pulverized coal pyrolysis system layout structure provided by an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of a hanging basket installed on a ladder in a novel rotary kiln pulverized coal pyrolysis system layout structure provided in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Drying oven; 2. Retort oven; 3. Pyrolysis and cooling device; 4. Drying coal hopper; 5. Bucket elevator; 6. Support frame; 7. Protective fence; 8. First walking passage; 9. Second walking passage; 10. Inclined staircase; 11. Ladder; 12. Lifting support; 13. Lifting hoist; 14. Lifting platform; 15. Suspended basket; 16. Connecting support. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Please see Figure 1-3 A novel rotary kiln pulverized coal pyrolysis system layout includes a drying furnace 1, a retorting furnace 2, and a pyrolysis and cooling device 3 arranged sequentially on the ground. A drying coal hopper 4 is installed above the drying furnace 1 and the retorting furnace 2 for feeding. The system also includes:

[0033] Bucket elevators 5 are installed above the drying coal hoppers 4 of the drying furnace 1 and the carbonization furnace 2, as well as above the pyrolysis and cooling device 3, to transport materials. Since the drying furnace 1, the carbonization furnace 2, and the pyrolysis and cooling device 3 are all built on the ground, the materials are fed through the drying coal hoppers 4 built above. The materials need to be transported to the higher drying coal hoppers 4. Therefore, in the process of arranging the rotary kiln pulverized coal pyrolysis system, we directly set the drying furnace 1, the carbonization furnace 2, and the pyrolysis and cooling device 3, which require a large amount of construction, on the ground to reduce the amount of engineering work. In the later stage, it also reduces the inspection and maintenance costs, as well as the investment and operating costs. The equipment at a lower position is convenient for use and maintenance.

[0034] Support frame 6 is built on the ground to support the dry coal hopper 4 above the drying furnace 1 and the dry distillation furnace 2, as well as to support the pyrolysis and cooling device 3. Therefore, the support frame 6 is constructed accordingly based on the number and distribution of equipment.

[0035] A walking passage structure is installed on the support frame 6 for people to walk on;

[0036] And a support structure, which is set on the support frame 6 to fix and support the bucket elevator 5.

[0037] Specifically, the construction of support frame 6 effectively integrates the layout of the rotary kiln pulverized coal pyrolysis system, allowing some equipment in the system to be directly fixed and supported via support frame 6, reducing the burden of civil construction. Furthermore, a walking passageway structure is provided between adjacent support frames 6 to facilitate personnel movement, improving the interoperability between support frames 6 and the rotary kiln pulverized coal pyrolysis system. This facilitates personnel relocation during use and maintenance, enhancing work convenience. The support structure also significantly simplifies the height and support fixation of the bucket elevator 5. The relatively tall bucket elevator 5 does not require complex connections to the ground, achieving stable support through rapid construction. Simultaneously, the use of a closed-loop bucket elevator 5 for material transport (one operational, one standby) ensures economical and reliable operation. This flow-line layout effectively reduces equipment installation height and minimizes civil construction investment.

[0038] Furthermore, the support frame 6 is a steel structure support. Steel structures are low in cost, quick to construct, easy to maintain, and stable in use, effectively reducing civil engineering investment in equipment.

[0039] Furthermore, the dry coal hopper 4 is fixedly connected to the support frame 6 by bolts. Specifically, a suitable support structure can be connected to the support frame 6 according to the structure of the dry coal hopper 4 to stably support and fix the dry coal hopper 4.

[0040] Furthermore, the bucket elevator 5 is a closed bucket elevator, which prevents dust from escaping during the material conveying process.

[0041] Furthermore, the bottoms of the drying furnace 1, the distillation furnace 2, and the support frame 6 are all supported by cement foundations. This structure is a conventional installation method. However, in this device, the cement foundations can be reused directly, leaving space for the steel structure support frame 6. Using the cement foundations as the support base makes the support frame 6 more stable and effectively integrates the layout scheme of the new rotary kiln pulverized coal pyrolysis system, further reducing the investment in equipment civil engineering.

[0042] Furthermore, the height of the support frame 6 supporting the pyrolysis and cooling device 3 is higher than the height of the support frame 4 supporting the dry coal hopper. Therefore, the height of the support frame 6 will vary, depending entirely on the specific equipment structure, shape, and height.

[0043] Furthermore, the walking passage structure includes a protective fence 7 erected on the top periphery of the support frame 6. Inside the protective fence 7, there are stepboards for people to walk on, so that workers on the support frame 6 can stand on the stepboards and be protected by the protective fence 7, so as to facilitate the maintenance of the relevant equipment on the support frame 6.

[0044] It also includes a first travel channel 8 located at the upper end between two adjacent support frames 6, and a second travel channel 9 located at the lower end between two adjacent support frames 6 and above the drying furnace 1 and the distillation furnace 2;

[0045] An inclined staircase 10 is constructed between the top of the support frame 6 supporting the pyrolysis and cooling device 3 and the top of the adjacent support frame 6.

[0046] Specifically, the first walking passage 8 is often located at a higher position, facilitating movement of personnel between adjacent support frames 6. This allows for more convenient and rapid maintenance and repair of the entire rotary kiln pulverized coal pyrolysis system. Inclined staircases 10 are constructed between support frames 6 with height differences, allowing personnel to climb and move around more easily. The second walking passage 9 is typically located closer to the equipment, enabling personnel to observe the equipment up close and facilitating maintenance and repair. Additionally, the second walking passage 9 can also serve as a mounting location for related equipment. For example, if cooling fans are installed on the outside of the drying furnace 1 and the distillation furnace 2, mounting space is provided at the bottom of the second walking passage 9 to save ground space and make the layout of the rotary kiln pulverized coal pyrolysis system more rational.

[0047] Furthermore, a ladder 11 is provided on one side of the support frame 6 for people to climb into the protective fence 7. A lifting bracket 12 is provided on one side of the ladder 11, and a lifting hoist 13 is provided on the top of the lifting bracket 12. A lifting platform 14 is provided on the lifting bracket 12 below the lifting hoist 13. The lifting platform 14 is driven to rise and fall by the lifting hoist 13. The ladder 11 is connected to the protective fence 7 to facilitate climbing into the protective fence 7. At the same time, the protective fence 7 is also connected to the first walking passage 8, the second walking passage 9 and the inclined staircase 10 to facilitate the smooth passage and walking of personnel between them. That is, the ends of the first walking passage 8, the second walking passage 9 and the inclined staircase 10 are all equipped with protective fences 7 and walking steps to facilitate the interconnection between the structures (the attached figure only shows the protective fence 7 at the upper part of the support frame 6), improving the safety of personnel when walking.

[0048] Furthermore, a suspended basket 15 is mounted on the second travel channel 9, and the suspended basket 15 moves along the second travel channel 9 via concave wheels on the mounting frame. The suspended basket 15 can be easily moved and brought closer to the drying furnace 1 and the distillation furnace 2 for maintenance. A special structure can be provided on the second travel channel 9 to support the suspended basket 15, making its use more convenient. The suspended basket 15 is conventional equipment, and its usage will not be described in detail.

[0049] Furthermore, the support structure includes connecting brackets 16 disposed on the top and sides of the support frame 6. The connecting brackets 16 are used to fix and support the bucket elevator 5. The connecting brackets 16 extending from the support frame 6 fix and support the main support positions of the bucket elevator 5 to further stabilize the fixation and support of the bucket elevator 5.

[0050] In summary, this design presents a layout scheme suitable for civil engineering, installation, operation, and maintenance of rotary kiln pulverized coal pyrolysis processes. A closed-loop bucket elevator is used for material conveying (one operational, one standby), ensuring economical and reliable operation. The integrated frame support structure, supporting a flow-line layout, effectively reduces equipment installation height, minimizes civil engineering investment, facilitates operation and maintenance, improves maintenance convenience, and reduces maintenance costs.

[0051] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A novel rotary kiln pulverized coal pyrolysis system layout structure, comprising a drying furnace (1), a retorting furnace (2), and a pyrolysis and cooling device (3) arranged sequentially on the ground, wherein a drying coal hopper (4) is provided above the drying furnace (1) and the retorting furnace (2) for feeding coal, characterized in that, Also includes: Bucket elevators (5) are installed above the dry coal hoppers (4) of the drying furnace (1) and the distillation furnace (2), as well as above the pyrolysis and cooling device (3) to transport materials. Support frame (6), which is built on the ground to support the dry coal hopper (4) above the drying furnace (1) and the distillation furnace (2) and to support the pyrolysis and cooling device (3); A walking passage structure is provided on the support frame (6) for people to walk on; and a support structure, which is mounted on the support frame (6) to fix and support the bucket elevator (5).

2. The novel rotary kiln pulverized coal pyrolysis system layout structure according to claim 1, characterized in that, The support frame (6) is a steel structure support.

3. The novel rotary kiln pulverized coal pyrolysis system layout structure according to claim 2, characterized in that, The dry coal hopper (4) is fixedly connected to the support frame (6) by bolts.

4. The novel rotary kiln pulverized coal pyrolysis system layout structure according to claim 1, characterized in that, The bucket elevator (5) is a closed bucket elevator.

5. The novel rotary kiln pulverized coal pyrolysis system layout structure according to claim 1, characterized in that, The bottoms of the drying furnace (1), the distillation furnace (2), and the support frame (6) are all supported by cement foundations.

6. The novel rotary kiln pulverized coal pyrolysis system layout structure according to claim 1, characterized in that, The height of the support frame (6) supporting the pyrolysis and cooling device (3) is higher than the height of the dry coal hopper (4).

7. The novel rotary kiln pulverized coal pyrolysis system layout structure according to claim 6, characterized in that, The walking passage structure includes a protective fence (7) erected on the top periphery of the support frame (6), and a step for people to walk on is provided on the inner side of the protective fence (7); It also includes a first travel channel (8) located at the upper end between the two adjacent support frames (6) and a second travel channel (9) located at the lower end between the two adjacent support frames (6) and above the drying furnace (1) and the distillation furnace (2). An inclined staircase (10) is constructed between the top of the support frame (6) supporting the pyrolysis and cooling device (3) and the top of the adjacent support frame (6).

8. The novel rotary kiln pulverized coal pyrolysis system layout structure according to claim 7, characterized in that, A ladder (11) is provided on one side of the support frame (6) for people to climb into the protective fence (7). A lifting bracket (12) is provided on one side of the ladder (11). A lifting hoist (13) is provided on the top of the lifting bracket (12). A lifting platform (14) is provided on the lifting bracket (12) below the lifting hoist (13). The lifting platform (14) is driven to lift by the lifting hoist (13).

9. The novel rotary kiln pulverized coal pyrolysis system layout structure according to claim 7, characterized in that, A basket (15) is mounted on the second walking channel (9), and the basket (15) moves on the second walking channel (9) by means of concave wheels on the mounting frame.

10. The novel rotary kiln pulverized coal pyrolysis system layout structure according to claim 1, characterized in that, The support structure includes connecting brackets (16) disposed on the top and sides of the support frame (6), the connecting brackets (16) being fixedly connected to the bucket elevator (5) to fix and support the bucket elevator (5).

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