Pyrolysis gas quench tower of circulating fluidized bed

Abstract

The utility model relates to the technical field of heat exchange equipment, in particular to a pyrolysis gas quench tower of a circulating fluidized bed, which comprises exhaust end sockets arranged at the upper end and the lower end and communicated with a produced gas buffer tank, and a material returning end socket communicated with cyclone separation equipment, tower bodies are hermetically arranged between the exhaust end sockets and the material returning end socket, and a plurality of groups of tower bodies are arranged side by side along the vertical direction; a vulcanizing plate and a material collecting plate which are connected with each other are obliquely arranged in the tower body, an air passing pipe group is arranged on the vulcanizing plate in a penetrating manner, the material collecting plate is provided with a cooling fin, and a cooling coil is arranged on the cooling fin; a primary gas pipe, a secondary gas pipe and a material supplementing pipe are arranged on the side wall of the tower body in a communicating manner, the exteriors of the primary gas pipe and the secondary gas pipe are communicated with each other and are arranged on one side close to the vulcanizing plate, the primary gas pipe is positioned below the vulcanizing plate, the secondary gas pipe is positioned above the vulcanizing plate, and the material supplementing pipe is arranged on one side close to the material collecting plate and is positioned above the vulcanizing plate. The pyrolysis gas quench tower of the circulating fluidized bed disclosed by the utility model realizes cooling and impurity removal of pyrolysis gas.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange equipment technology, specifically a circulating fluidized bed pyrolysis gas quench tower. Background Technology

[0002] Coal gas is a combustible gas produced from coal through processes such as coal gasification and dry distillation. The main production processes for coal gas include coal gasification and pyrolysis. Coal gasification involves reacting coal with a gasifying agent in a high-temperature, oxygen-deficient, or low-oxygen environment to convert the coal into coal gas. Pyrolysis involves heating coal and other organic matter to high temperatures in an oxygen-deficient or low-oxygen environment, causing them to decompose into gaseous, liquid, and solid products. Therefore, the coal gas produced by pyrolysis is high in temperature and contains many impurities, requiring cooling and purification before storage. Currently, pyrolysis coal gas is cooled using coolers, with the addition of rain shower and water bath structures to improve cooling efficiency. However, conventional pyrolysis coal gas cooling equipment still has the following shortcomings: impurities in the pyrolysis coal gas easily adhere to the inner wall of the cooling tube bundle, thereby reducing cooling efficiency and even clogging the tube bundle. Utility Model Content

[0003] In order to solve the technical problems existing in the background art, this utility model provides a circulating fluidized bed pyrolysis gas quench tower to achieve cooling and impurity removal of pyrolysis gas.

[0004] The technical solution adopted by this utility model is:

[0005] A circulating fluidized bed pyrolysis gas quench tower includes: exhaust heads and return heads located at the upper and lower ends, the exhaust heads being connected to a produced gas buffer tank, and the return heads being connected to a cyclone separator; a tower body is sealed between the exhaust heads and the return heads, and multiple sets of tower bodies are arranged side-by-side along the vertical direction; a vulcanizing plate and a collecting plate are inclinedly arranged inside the tower body, a group of gas passage pipes is installed through the vulcanizing plate, cooling fins are installed on the collecting plate, and cooling coils are installed on the cooling fins; a primary gas pipe, a secondary gas pipe, and a feed pipe are connected to the side wall of the tower body, the primary gas pipe and the secondary gas pipe are externally interconnected and located on the side close to the vulcanizing plate, the primary gas pipe is located below the vulcanizing plate, the secondary gas pipe is located above the vulcanizing plate, and the feed pipe is located on the side close to the collecting plate and above the vulcanizing plate.

[0006] Furthermore, the vulcanizing plate and the aggregate plate are inclined, with the inclination angle of the vulcanizing plate being less than that of the aggregate plate.

[0007] Furthermore, the tilt angle of the vulcanized plate is set to 5-10°;

[0008] The inclination angle of the aggregate plate is set to 10-15°.

[0009] Furthermore, the end of the gas passage assembly is arranged parallel to the vulcanizing plate.

[0010] Furthermore, a partition is provided directly below the collecting plate. The partition is shaped like a "┗" and forms a heat-insulating space with the collecting plate through which the cooling coil passes.

[0011] Furthermore, the cooling coil is coiled in a serpentine shape on the cooling fins.

[0012] Furthermore, the diameter of the primary trachea is greater than the diameter of the secondary trachea.

[0013] Furthermore, the feeding pipe is inclined and connected to the cyclone separator.

[0014] The beneficial effects of this novel circulating fluidized bed pyrolysis gas quench tower are as follows:

[0015] 1. The material in the pyrolysis gas is circulated through the primary gas pipe, secondary gas pipe, and gas passage pipe group to form a sulfidation bed, thereby removing impurities from the pyrolysis gas.

[0016] 2. The cooling coil cools the cooling fins, which in turn cool the material flowing through the signal, thereby cooling the pyrolysis gas. Attached Figure Description

[0017] Figure 1 This utility model provides a general schematic diagram of a circulating fluidized bed pyrolysis gas quench tower;

[0018] Figure 2 This utility model provides a schematic diagram of the tower body of a circulating fluidized bed pyrolysis gas quench tower.

[0019] In the picture:

[0020] 1. Exhaust end cap,

[0021] 2. Return material end cap,

[0022] 3. Tower body,

[0023] 311. Vulcanizing plate; 312. Aggregator plate; 313. Partition plate; 321. Cooling fins; 322. Cooling coil; 331. Primary air pipe; 332. Secondary air pipe; 333. Feeding pipe; 34. Air passage pipe assembly. Detailed Implementation

[0024] To more clearly and explicitly illustrate the specific implementation objectives and methods of this utility model, the technical solution of this utility model will be fully described below. The described embodiments are only some embodiments of this utility model, not all embodiments. Without creative effort, all other embodiments based on the described embodiments of this utility model are within the protection scope of this utility model.

[0025] This utility model relates to a circulating fluidized bed pyrolysis gas quench tower, such as... Figure 1 , Figure 2 As shown, it includes: an exhaust head 1 and a return head 2 disposed at the upper and lower ends, respectively. The exhaust head 1 is connected to the output gas buffer tank, and the return head 2 is connected to the cyclone separator.

[0026] A tower body 3 is sealed between the exhaust end cap 1 and the return end cap 2. Multiple sets of tower bodies 3 are arranged side by side in the vertical direction. Inside the tower body 3, vulcanizing plates 311 and collecting plates 312 are inclined and connected. The vulcanizing plates 311 and collecting plates 312 are inclined, and the inclination angle of the vulcanizing plate 311 is less than that of the collecting plate 312. The inclination angle of the vulcanizing plate 311 is set to 5-10°, and the inclination angle of the collecting plate 312 is set to 10-15°.

[0027] A venting pipe assembly 34 is provided through the vulcanizing plate 311, with the end of the venting pipe assembly 34 parallel to the vulcanizing plate 311; a cooling fin 314 is provided on the collecting plate 312, with multiple sets of cooling fins arranged in parallel and vertically, and a cooling coil 322 is provided on the cooling fin 314, with the cooling coil 322 coiled in a serpentine shape on the cooling fin 314; a partition 313 is provided directly below the collecting plate 312, the partition 313 is shaped like a "┗", and forms a heat-insulating space with the collecting plate 312 through which the cooling coil 322 passes.

[0028] A primary air pipe 331, a secondary air pipe 332, a feed pipe 333, and a discharge pipe are connected and arranged on the side wall of the tower body 3. The external extensions of the primary air pipe 331 and the secondary air pipe 332 are interconnected and located on the side near the vulcanizing plate 311. The primary air pipe 331 is located below the vulcanizing plate 311, and the secondary air pipe 332 is located above the vulcanizing plate 311. The extension direction of the secondary air pipe 332 into the tower body 3 is parallel to the cooling fins 314. The feed pipe 333 is located on the side near the collecting plate 312 and above the vulcanizing plate 311. The diameter of the primary air pipe 331 is greater than the diameter of the secondary air pipe 332. The feed pipe 333 is inclined and connected to the cyclone separator. The discharge pipe is connected to the material recovery equipment, and the material recovery equipment is connected to the cyclone separator.

[0029] In summary, the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification. All equivalent variations and modifications of the shape, structure, features, and spirit described in the claims of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A circulating fluidized bed pyrolysis gas quench tower, comprising: The exhaust cap (1) and return cap (2) are located at the upper and lower ends, respectively. The exhaust cap (1) is connected to the output gas buffer tank, and the return cap (2) is connected to the cyclone separator. The feature is that: A tower body (3) is sealed between the exhaust end cap (1) and the return end cap (2). Multiple sets of tower bodies (3) are arranged side-by-side along the vertical direction. A vulcanizing plate (311) and a collecting plate (312) are inclinedly arranged inside the tower body (3). An exhaust pipe assembly (34) is installed through the vulcanizing plate (311). Cooling fins (314) are installed on the collecting plate (312), and cooling coils (322) are installed on the cooling fins (314). The sidewalls of the tower body (3) are connected to… The system is equipped with a primary air pipe (331), a secondary air pipe (332), and a feed pipe (333). The primary air pipe (331) and the secondary air pipe (332) are externally connected and are located on the side close to the vulcanizing plate (311). The primary air pipe (331) is located below the vulcanizing plate (311), and the secondary air pipe (332) is located above the vulcanizing plate (311). The feed pipe (333) is located on the side close to the collecting plate (312) and is located above the vulcanizing plate (311).

2. The circulating fluidized bed pyrolysis gas quench tower according to claim 1, characterized in that: The vulcanizing plate (311) and the collecting plate (312) are inclined, and the inclination angle of the vulcanizing plate (311) is less than the inclination angle of the collecting plate (312).

3. The circulating fluidized bed pyrolysis gas quench tower according to claim 2, characterized in that: The tilt angle of the vulcanized plate (311) is set to 5-10°; The inclination angle of the aggregate plate (312) is set to 10-15°.

4. The circulating fluidized bed pyrolysis gas quench tower according to claim 2, characterized in that: The end of the air passage assembly (34) is arranged parallel to the vulcanizing plate (311).

5. The circulating fluidized bed pyrolysis gas quench tower according to claim 1, characterized in that: A partition (313) is provided directly below the collecting plate (312). The partition (313) is shaped like a "┗" and forms a heat-insulating space with the collecting plate (312) through which the cooling coil (322) passes.

6. The circulating fluidized bed pyrolysis gas quench tower according to claim 1 or 5, characterized in that: The cooling coil (322) is coiled in a serpentine shape on the cooling fins (314).

7. The circulating fluidized bed pyrolysis gas quench tower according to claim 1, characterized in that: The diameter of the primary trachea (331) is greater than the diameter of the secondary trachea (332).

8. The circulating fluidized bed pyrolysis gas quench tower according to claim 1, characterized in that: The feed pipe (333) is inclined and connected to the cyclone separator.

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