A device for balancing the internal pressure of a top-charging coke oven charging guide sleeve

Abstract

The utility model provides a device that can balance the internal pressure of the charging guide sleeve of a top-charging coke oven, belongs to the technical field of coking equipment, and is used to prevent dust overflow and pollution of the working environment. The technical scheme is as follows: the pressure balance pipe is horizontally placed, one end of the pressure balance pipe is connected to the upper end of the far-end charging guide sleeve, the other end of the pressure balance pipe is connected to the upper end of the near-end charging guide sleeve, a shut-off valve is installed at the connection between the pressure balance pipe and the upper end of the far-end charging guide sleeve, a backflush valve is installed in the middle of the pressure balance pipe, and the inlet end of the backflush valve is connected to the purging medium pipeline. The utility model has the advantages of simple structure and convenient use, can guide the raw coal gas in the far-end charging guide sleeve to the near-end charging guide sleeve through the pressure balance pipe at the end of coal charging and during the process of leveling the coal, reduces the internal pressure of the far-end charging guide sleeve, and effectively prevents dust and raw coal gas from overflowing, polluting, and deteriorating the working environment.

Description

Technical Field

[0001] This utility model relates to a device that can balance the internal pressure of the coal charging guide sleeve of a top-loading coke oven, belonging to the technical field of coking equipment. Background Technology

[0002] Top-charged coke ovens require coal cars to be loaded onto the top of the oven. During the loading process, the carbonization chamber is affected by the high-pressure ammonia water in the riser pipe, resulting in negative pressure inside the carbonization chamber. The suction is stronger closer to the riser pipe and weaker further away. Therefore, the carbonization chambers at the far end with weak suction become the weakest link during the loading process. In addition, the space at the top of the oven will become smaller at the end of the loading process and during the leveling process, which will further aggravate the suction effect on the carbonization chambers at the far end of the riser pipe. This can easily cause raw coal gas and dust in the carbonization chamber to overflow from the guide sleeve of the coal car at the far end of the riser pipe, polluting and deteriorating the on-site environment.

[0003] To prevent the aforementioned problems, current methods mostly involve reducing the amount of coal charged, indirectly increasing the space at the top of the furnace, or improving the sealing of the guide sleeve. However, these measures have a significant impact on production and are not very effective. Currently, there is no effective solution to this problem; the only recourse is to strengthen monitoring during operation and promptly stop coal charging when raw coal gas leaks out, which hinders the smooth progress of production. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a device that can balance the internal pressure of the coal charging guide sleeve of a top-loading coke oven. This device can reduce the internal pressure of the far-end guide sleeve and avoid excessive internal pressure of the far-end coal charging guide sleeve, which would cause coal dust and external coal gas to overflow and worsen the working environment.

[0005] The technical solution to the above technical problem is: A device for balancing the internal pressure of the coal charging guide sleeve in a top-loading coke oven includes a furnace body, a carbonization chamber, a riser pipe, a far-end coal charging guide sleeve, an intermediate coal charging guide sleeve, and a near-end coal charging guide sleeve. The far-end coal charging guide sleeve, the intermediate coal charging guide sleeve, and the near-end coal charging guide sleeve are sequentially installed on the top of the furnace body. The riser pipe is installed on the outside of the near-end coal charging guide sleeve. The lower ends of the riser pipe, the far-end coal charging guide sleeve, the intermediate coal charging guide sleeve, and the near-end coal charging guide sleeve are respectively connected to the carbonization chamber of the furnace body. A pressure balancing pipe is added. The pressure balancing pipe is placed horizontally. One end of the pressure balancing pipe is connected to the upper end of the far-end coal charging guide sleeve, and the other end of the pressure balancing pipe is connected to the upper end of the near-end coal charging guide sleeve.

[0006] The aforementioned device for balancing the internal pressure of the coal charging guide sleeve in a top-loading coke oven has a shut-off valve installed at the connection between the pressure balancing pipe and the upper end of the far-end coal charging guide sleeve, and a backflush valve installed in the middle of the pressure balancing pipe, with the inlet end of the backflush valve connected to the purging medium pipeline.

[0007] The beneficial effects of this utility model are: This invention features a pressure balancing pipe installed between the far-end and near-end coal charging guide sleeves. During the final stages of coal charging and leveling, when the exhaust of raw coal gas from the carbonization chamber is obstructed and the pressure in the far-end guide sleeve increases, the pressure balancing pipe can guide a portion of the raw coal gas from the far-end guide sleeve into the near-end guide sleeve, thereby reducing the internal pressure of the far-end guide sleeve. A shut-off valve controls the flow of raw coal gas, maintaining pressure balance between the far-end and near-end guide sleeves. A backflush valve allows the pressure balancing pipe to introduce purging media for purging.

[0008] This utility model has a simple structure and is easy to use. During the final stage of coal loading and coal leveling, it can effectively reduce the internal pressure of the far-end coal loading guide sleeve, which is far from the riser pipe, and effectively prevent coal dust from overflowing, polluting and deteriorating the working environment. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the usage state of this utility model.

[0010] The following are marked in the diagram: 1. Pressure balance pipe; 2. Shut-off valve; 3. Backflush valve; 4. Far-end coal charging guide sleeve; 5. Middle coal charging guide sleeve; 6. Near-end coal charging guide sleeve; 7. Ascending pipe; 8. Furnace body; 9. Carbonization chamber; 10. Coal leveling rod; 11. Coal. Detailed Implementation

[0011] This utility model consists of a pressure balance pipe 1, a shut-off valve 2, a backflush valve 3, a far-end coal charging guide sleeve 4, an intermediate coal charging guide sleeve 5, and a near-end coal charging guide sleeve 6.

[0012] Figure 1 , 2 The pressure balancing pipe 1 is placed horizontally, with one end connected to the upper end of the far-end coal charging guide sleeve 4 and the other end connected to the upper end of the near-end coal charging guide sleeve 6. The function of the pressure balancing pipe 1 is to introduce a portion of the raw coal gas from the far-end coal charging guide sleeve 4 into the near-end coal charging guide sleeve 6, thereby reducing the internal pressure of the far-end coal charging guide sleeve 4.

[0013] Figure 1 , 2 The display shows that a shut-off valve 2 is installed at the connection between the pressure balancing pipe 1 and the upper end of the remote coal loading guide sleeve 4. The shut-off valve 2 is an electrically operated sealed butterfly valve used to control the opening and closing of the pressure balancing pipe 1, ensuring internal communication between the remote coal loading guide sleeve 4 and the near-end coal loading guide sleeve 6 during coal car loading. During operation, the shut-off valve 2 controls the flow of raw coal gas, maintaining pressure balance between the remote coal loading guide sleeve 4 and the near-end coal loading guide sleeve 6.

[0014] Figure 1 , 2The display shows that a backflush valve 3 is installed in the middle of the pressure balance pipe 1, and the inlet end of the backflush valve 3 is connected to the purging medium pipeline. The backflush valve 3 is a solenoid valve used to control the flow of the backflush medium. Its function is to purge the internal dust of the pressure balance pipe 1 and prevent coal dust from accumulating and clogging the pressure balance pipe 1.

[0015] Figure 2 The usage process of this utility model is shown as follows: A. Before starting coal loading, open backflush valve 3 and shut-off valve 2 to purge pressure balance pipe 1 to ensure it is unobstructed. After purging, close backflush valve 3 and shut-off valve 2.

[0016] B. After coal charging begins, if the coal material 11 in the carbonization chamber 9 is too high or the coal leveling rod 10 enters the carbonization chamber 9, causing the space at the top of the furnace to become smaller and affecting the output of raw coal gas, the shut-off valve 2 will be opened, so that the far-end coal charging guide sleeve 4 and the near-end coal charging guide sleeve 6 are connected through the pressure balance pipe 1. The raw coal gas in the far-end coal charging guide sleeve 4 can enter the carbonization chamber 9 and the riser pipe 7 through the pressure balance pipe 1 and the near-end coal charging guide sleeve 6, thereby reducing the pressure of the raw coal gas in the far-end coal charging guide sleeve 4.

[0017] C. After coal loading is completed, close shut-off valve 2.

[0018] This invention uses a pressure balancing pipe 1 to achieve internal communication between the two coal charging guide sleeves at the far and near ends of the riser pipe 7. This allows a portion of the raw coal gas at the far end of the carbonization chamber 9 to be introduced into the near end of the carbonization chamber 9 through the pressure balancing pipe 1. This ensures that when the space at the top of the furnace decreases at the end of the coal charging process and during coal leveling, the internal pressure of the far end coal charging guide sleeve 4 is reduced, thus preventing dust from overflowing and polluting or deteriorating the working environment.

[0019] An embodiment of this utility model is as follows: The pressure balance tube 1 has a diameter of 200mm and a length of 9000mm; Shut-off valve 2 is a DN200 sealed butterfly valve. The backflush valve 3 is a DC24 electromagnetic pulse valve.

Claims

1. A device for balancing the internal pressure of the coal charging guide sleeve in a top-loading coke oven, comprising a furnace body (8), a carbonization chamber (9), a riser pipe (7), a far-end coal charging guide sleeve (4), a middle coal charging guide sleeve (5), and a near-end coal charging guide sleeve (6), wherein the far-end coal charging guide sleeve (4), the middle coal charging guide sleeve (5), and the near-end coal charging guide sleeve (6) are sequentially installed on the top of the furnace body (8), the riser pipe (7) is installed on the outside of the near-end coal charging guide sleeve (6), and the lower ends of the riser pipe (7), the far-end coal charging guide sleeve (4), the middle coal charging guide sleeve (5), and the near-end coal charging guide sleeve (6) are respectively connected to the carbonization chamber (9) of the furnace body (8), characterized in that: It adds a pressure balance pipe (1), which is placed horizontally. One end of the pressure balance pipe (1) is connected to the upper end of the far-end coal loading guide sleeve (4), and the other end of the pressure balance pipe (1) is connected to the upper end of the near-end coal loading guide sleeve (6).

2. The device for balancing the internal pressure of the coal charging guide sleeve in a top-charging coke oven according to claim 1, characterized in that: A shut-off valve (2) is installed at the connection between the pressure balance pipe (1) and the upper end of the far-end coal loading guide sleeve (4). A backflush valve (3) is installed in the middle of the pressure balance pipe (1). The inlet end of the backflush valve (3) is connected to the purging medium pipeline.

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