Cooling and gas collecting device for upgrading low-order pulverized coal and low-temperature upgrading furnace
The staggered layout of the gas collector and distribution box design solves the problem of poor gas flow in the upgrading of low-grade pulverized coal, achieves efficient gas collection and cooling, and improves the gas collection and cooling effects of the low-temperature upgrading furnace.
Patent Information
- Application Number
- CN202422872458.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-11-21
AI Technical Summary
When low-grade pulverized coal is distilled at low temperature, the gaps between the particles are small, which prevents the gas from flowing smoothly. The gas and pulverized coal are mixed and discharged out of the furnace, affecting the gas collection and cooling effect.
A cooling and gas collection device is designed, including a gas distribution unit and a low-temperature upgrading furnace. A staggered layout of gas collectors and distribution boxes is adopted, and multiple air vents and pulverized coal baffles are set to form three-dimensional gas collection and cooling. The cooled coal gas is used for cooling and gas collection.
It improves the gas collection capacity and cooling effect, reduces pulverized coal agglomeration, enhances gas collection efficiency and cooling uniformity, and reduces the use of gas collectors.
Smart Images
Figure CN223409588U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of low-temperature upgrading of pulverized coal, in particular to a cooling and gas collecting device and a low-temperature upgrading furnace for upgrading low-rank pulverized coal. Background Art
[0002] During low-temperature carbonization, low-grade pulverized coal needs to be upgraded in an oxygen-free environment at 400-450°C. However, the gaps between particles in the pulverized coal are small, and the gas cannot flow smoothly in the pulverized coal pile, causing the coal gas to easily mix with the pulverized coal and be discharged out of the furnace. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a cooling gas collecting device and a low-temperature upgrading furnace for upgrading low-grade pulverized coal, which can improve the gas collection and cooling effects.
[0004] In order to solve the above problems, the utility model provides a cooling and gas collecting device and a low-temperature upgrading furnace for upgrading low-rank pulverized coal. The cooling and gas collecting device and the low-temperature upgrading furnace for upgrading low-rank pulverized coal include at least two gas collecting and distributing units, at least one gas collecting and distributing unit is used to cool pulverized coal, and the other gas collecting and distributing units are used to collect coal gas. Each gas collecting and distributing unit includes a plurality of gas collectors, and the gas collectors include a collecting and distributing connecting pipe, a collecting and distributing box and a pulverized coal baffle. The collecting and distributing box is installed on the collecting and distributing connecting pipe, and the collecting and distributing box is connected to the collecting and distributing connecting pipe. The collecting and distributing box is provided with a first air vent and a second air vent, the first air vent is located on the side wall of the collecting and distributing box, the second air vent is located at the bottom of the collecting and distributing box, and the second air vent is arranged along the length direction of the collecting and distributing box. The pulverized coal baffle is installed on the collecting and distributing box, and the pulverized coal baffle is used to block the pulverized coal from entering the first air vent; the first air vent and the second air vent on the gas collecting and distributing unit used for collecting coal gas are used to collect coal gas; the first air vent and the second air vent on the gas collecting and distributing unit used for cooling pulverized coal are used to discharge cooling gas to cool the coal gas.
[0005] Furthermore, there are a plurality of the first vents, and a plurality of rows of the first vents are arranged on the side wall of each side of the collecting and distributing box.
[0006] Furthermore, the projection of the pulverized coal baffle on the collecting and distributing box covers the first vent.
[0007] Furthermore, a communication opening is provided on the collecting and distributing connecting pipe, the collecting and distributing box is a rectangular frame, and the upper end of the collecting and distributing box is fixed at the communication opening of the collecting and distributing connecting pipe.
[0008] Furthermore, the gas used to cool the pulverized coal is cooled coal gas.
[0009] Furthermore, the gas collectors in each gas collecting and dispersing unit are staggered in the vertical direction.
[0010] Furthermore, adjacent gas collectors in the vertical direction are staggered in the horizontal direction.
[0011] Furthermore, the gas collecting and distributing unit further includes a transfer box, and both ends of the gas collecting and distributing unit are connected to corresponding transfer boxes.
[0012] Furthermore, the gas distribution unit further includes a gas connecting pipe, which is connected to the transfer box.
[0013] In order to solve the above problems, the present invention provides a low-temperature upgrading furnace, which includes a furnace body and any one of the above-mentioned cooling and gas collecting devices for upgrading low-grade pulverized coal.
[0014] The utility model is used for the cooling and gas collecting device and the low-temperature upgrading furnace for upgrading low-grade pulverized coal, by arranging a first air vent on the side wall of the collecting and distributing box and a second air vent on the bottom, so as to form three-dimensional gas collection and three-dimensional cooling, thereby increasing the gas collection amount and improving the effect of cooling the pulverized coal. At the same time, the second air vent forms a larger collecting and distributing surface at the bottom, further improving the gas collection efficiency and cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of a preferred embodiment of the low-temperature upgrading furnace of the utility model.
[0016] Figure 2 It is a structural diagram of the gas distribution unit.
[0017] Figure 3 It is the distribution diagram of the gas collector in the furnace body.
[0018] Figure 4 It is a cross-sectional view of the gas collector.
[0019] Figure 5 It is a cross-sectional view of AA.
[0020] The meanings of the reference numerals in the accompanying drawings are:
[0021] Furnace body 1, cooling gas collecting device A, gas collecting and distributing unit 2, gas collector 3, collecting and distributing connecting pipe 31, connecting opening 311, collecting and distributing box 32, first air vent 321, second air vent 322, pulverized coal baffle 33, transfer box 4, gas connecting pipe 5. DETAILED DESCRIPTION
[0022] The present invention will be further described below with reference to the accompanying drawings.
[0023] like Figure 1 and Figure 2As shown, a preferred embodiment of the present invention for a low-temperature upgrading furnace includes a furnace body 1 and a cooling and gas collecting device A. The furnace body 1 has a cooling and gas collecting section. The cooling and gas collecting device A is provided on the furnace body 1 and located within the cooling and gas collecting section. The cooling and gas collecting device A is used to collect the coal gas generated by the upgraded pulverized coal and to cool the upgraded pulverized coal.
[0024] The cooling and gas collection device A comprises multiple gas collection and distribution units 2 arranged vertically, with the number of gas collection and distribution units 2 set as needed. In this embodiment, two gas collection and distribution units 2 are used for gas cooling, while the remaining units are used for gas collection. The cooling gas collection and distribution units 2 are typically located at the lower end of the cooling and gas collection section. To ensure maximum gas collection, at least one additional gas collection unit 2 is also located below the cooling gas collection units 2 for gas collection.
[0025] like Figures 3 to 5As shown, each gas collection and distribution unit 2 includes a transfer box 4, a gas connecting pipe 5, and multiple gas collectors 3. The gas collectors 3 are mounted on the furnace body 1. The transfer box 4 is mounted outside the furnace body 1, with both ends of each gas collector 3 extending outside the furnace body 1 and then into the transfer box 4. The gas collectors 3 are used to collect coal gas from the cooling and gas collection section of the furnace body 1. Multiple gas collectors 3 are arranged horizontally, with adjacent gas collectors 3 staggered vertically. That is, the gas collectors 3 are arranged horizontally, one high and one low, to prevent pulverized coal from agglomerating. Gas collectors 3 in adjacent gas collection units are staggered horizontally to prevent pulverized coal from agglomerating. The staggered arrangement of adjacent gas collectors 3 in both the vertical and horizontal directions makes the pulverized coal fluffy and less likely to agglomerate during its fall, allowing cooling gas to more easily enter the gaps between the pulverized coal, improving cooling efficiency. This also allows coal gas mixed in the pulverized coal to more easily escape and be collected by the gas collectors 3. Compared to the simple layout of the conventional matrix arrangement without staggering, the staggered layout structural design of the gas collector 3 in the present application can achieve the same gas collection and cooling effect while reducing the usage of the gas collector 3. The gas connecting pipe 5 is installed on the transfer box 4. The gas connecting pipe 5 provided on the gas collecting and distributing unit 2 used for gas collection is used to connect the transfer boxes 4 at both ends of the gas collector 3 and send the gas in the transfer box 4 to the external gas treatment system. The gas connecting pipe 5 provided on the gas collecting and distributing unit 2 used for cooling is used to connect the transfer boxes 4 corresponding to the cooling. The external cooling gas is centrally sent in through the gas connecting pipe 5, which can reduce the pipeline connected to the external cooling gas source and facilitate troubleshooting and maintenance. The cooling gas uses cooled gas, which does not increase the collected gas components, and facilitates the subsequent treatment of the gas. The gas connecting pipe 5 connected to the gas collecting and distributing unit 2 used for cooling connects the upper and lower adjacent transfer boxes 4 at the same time, reducing the use of pipelines. The gas connecting pipe 5 connected to the gas collecting and distributing unit 2 for collecting gas connects the transfer boxes 4 located at both ends of the gas collector 3 to centrally collect the gas and reduce the use of pipelines.
[0026] The gas collector 3 includes a collecting and distributing connecting pipe 31, a collecting box 32, and a pulverized coal baffle 33. The collecting and distributing connecting pipe 31 is mounted on the furnace body 1, and the collecting box 32 is mounted on the collecting and distributing connecting pipe 31. The collecting box 32 is connected to the connecting pipe and is provided with a gas channel for collecting coal gas. The coal gas enters the collecting box 32 and then enters the collecting and distributing connecting pipe 31, and finally enters the transfer box 4 from the collecting and distributing connecting pipe 31. The pulverized coal baffle 33 is mounted on the collecting box 32 and is used to block pulverized coal from entering the gas channel, thereby reducing the possibility of pulverized coal entering the collecting box 32.
[0027] Specifically, the collecting and distributing box 32 is a rectangular frame, and is provided with a first vent 321 and a second vent 322. The first vent 321 and the second vent 322 form a gas channel. The first vent 321 is located on the side wall of the collecting and distributing box 32. There are multiple first vents 321. Each side wall of the collecting and distributing box 32 is arranged with multiple rows of first vents 321, and each row has multiple first vents 321. This maximizes the number of points for gas collection and cooling while ensuring the strength of the collecting and distributing box 32. The first vent 321 is typically circular, but in other embodiments, it can also be set to other shapes as long as it ensures the strength of the side wall of the collecting and distributing box 32. There are four pulverized coal baffles 33, two of which are tilted and fixed on each side of the gas collector 32. The projections of the pulverized coal baffles 33 on the gas collector 32 cover the first air vents 321. The tilted positioning of the pulverized coal baffles 33, while simultaneously covering the first air vents 321, creates an isolation space between the pulverized coal baffles 33 and the sidewall of the gas collector 32. The pulverized coal baffles 33 prevent pulverized coal from entering this isolation space. Consequently, the gas collected by the first air vents 321 has a very low pure pulverized coal content, preventing pulverized coal from entering the gas collector 32 and clogging the first air vents 321, ensuring that the cooling gas can be smoothly discharged into the pulverized coal. The tilted positioning of the pulverized coal baffles 33 also reduces the volume of a single gas collector 3, allowing more gas collectors 3 to be installed at the same height. One pulverized coal baffle 33 can block two rows of first air vents 321. In other embodiments, it can also block one row of first air vents 321, depending on the needs. The second air vents 322 are arranged along the length of the collecting box 32. The length of the second air vents 322 is generally the same as that of the collecting box 32, forming a gas collection surface. This maximizes the gas collection area. In this embodiment, the opening at the lower end of the rectangular frame serves as the second air vent 322. Of course, to ensure the strength of the collecting box 32, reinforcing ribs may be provided within the collecting box 32 to increase its strength. In another embodiment, the second air vents 322 may be divided into multiple sections, with partitions provided between adjacent sections of the second air vents 322. Specifically, the collecting box 32 is a box with an open top and a closed bottom. The second air vents 322 for ventilation are provided at the closed bottom end of the box. Distributing the first air vents 321 and the second air vents 322 at different locations creates three-dimensional gas collection and pulverized coal cooling locations, improving gas collection and pulverized coal cooling efficiency.
[0028] The collecting and distributing connecting pipe 31 is a hollow tube body, and both ends of the collecting and distributing connecting pipe 31 are located in the transfer box 4. A connecting opening 311 is provided on the collecting and distributing connecting pipe 31. The upper end of the collecting and distributing box 32 is fixed at the connecting opening 311 of the collecting and distributing connecting pipe 31, so that the collecting and distributing box 32 is connected to the collecting and distributing connecting pipe 31, so that the cooling gas enters the collecting and distributing box 32 from the collecting and distributing connecting pipe 31, or the gas collected by the collecting and distributing box 32 enters the collecting and distributing connecting pipe 31.
[0029] The pulverized coal enters the cooling and gas collection section. As the pulverized coal falls, coal gas is separated from the pulverized coal and enters the collection and distribution connecting pipe 31 connected to it through the first air vent 321 and the second air vent 322 of the gas collection and distribution unit 2. The coal gas then enters the corresponding first gas collection box and then the corresponding gas exhaust pipe, and is finally sent to the external coal gas treatment system to complete the collection of coal gas. While collecting coal gas, the external gas source sends the cooling gas to the transfer box 4 connected to it through the gas connection pipe 5 of the cooling gas collection and distribution unit 2. The transfer box 4 then diverts the cooling gas to the corresponding gas collector 3. The cooling gas is discharged through the first air vent 321 and the second air vent 322 on the second gas collector 3 and sent into the furnace body 1 to cool the pulverized coal in the furnace body 1, thereby completing the collection of coal gas and cooling of the pulverized coal.
[0030] The gas collectors 3 are staggered both vertically and horizontally, allowing the pulverized coal to remain fluffy and prevent agglomeration during its fall, cooling evenly and maximizing gas collection during gas collection. Compared to a conventional matrix arrangement with no staggering, the staggered layout of the gas collectors 3 in this application reduces the number of gas collectors 3 used while achieving the same effect and preventing agglomeration of the pulverized coal.
[0031] The above is only an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure made using the contents of the description and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the patent protection scope of the present invention.
Claims
1. A cooling and gas collecting device for upgrading low-rank pulverized coal, characterized by: The vents are connected to the vent pipe to allow the vents to pass through the vent pipe, and the vents are connected to the vent pipe by a thread-through fan. The vents are passed through the vent pipe to the vent pipe, and the vents are connected to the vent pipe by a thread-through fan. The vents are connected to the vent pipe by a thread-through fan. The vents are connected to the vent pipe by a thread-through fan.
2. The cooling and gas collecting device for upgrading low-rank pulverized coal according to claim 1, characterized in that: There are a plurality of first vents, and a plurality of rows of first vents are arranged on the side wall of each side of the collecting box.
3. The cooling and gas collecting device for upgrading low-rank pulverized coal according to claim 1, characterized in that: The projection of the pulverized coal baffle on the collecting and distributing box covers the first vent.
4. The cooling and gas collecting device for upgrading low-rank pulverized coal according to claim 1, characterized in that: The collecting and distributing connecting pipe is provided with a communication opening, the collecting and distributing box is a rectangular frame, and the upper end of the collecting and distributing box is fixed at the communication opening of the collecting and distributing connecting pipe.
5. The cooling and gas collecting device for upgrading low-rank pulverized coal according to claim 1, characterized in that: The gas used for cooling the pulverized coal is cooled coal gas.
6. The cooling and gas collecting device for upgrading low-rank pulverized coal according to claim 1, characterized in that: The gas collectors in each gas collecting and dispersing unit are staggered in the vertical direction.
7. The cooling and gas collecting device for upgrading low-rank pulverized coal according to claim 1, characterized in that: Adjacent gas collectors in the vertical direction are staggered in the horizontal direction.
8. The cooling and gas collecting device for upgrading low-rank pulverized coal according to claim 1, characterized in that: The gas collecting and dispersing unit further includes a transfer box, and both ends of the gas collecting and dispersing unit are connected to the corresponding transfer boxes.
9. The cooling and gas collecting device for upgrading low-rank pulverized coal according to claim 8, characterized in that: The gas collecting and distributing unit further includes a gas connecting pipe, which is connected to the transfer box.
10. Low temperature upgrading furnace, characterized by: The invention comprises a furnace body and a cooling and gas collecting device for upgrading low-rank pulverized coal as described in any one of claims 1 to 9.