Coal gasification flare line arrester

Abstract

The utility model belongs to chemical industry safety device technical field especially, it is a kind of coal gasification torch pipeline fire barrier device, including the device shell of being installed on torch pipeline, device shell is equipped with stainless steel orifice plate corrugated packing and tubular gas distribution pipe in order along the coal gasification synthesis gas flow direction inside, the stainless steel orifice plate corrugated packing is composed of several bending metal corrugated sheets, and channel is formed between adjacent multiple metal corrugated sheets, tubular gas distribution pipe includes a pair of steel pipe support plate and the several stainless steel pipes distributed between a pair of steel pipe support plate, and stainless steel pipe is fixed with a pair of steel pipe support plate, the utility model can reduce the resistance of fire barrier device inner core, and set up multilayer reinforcing mechanism, enhance the strength of fire barrier device inner core, reduce the probability of device inner core damage, in addition, the device inside is provided with metal mesh type fire barrier core, prevents the ignition under accidental condition.

Description

Technical Field

[0001] This utility model belongs to the technical field of chemical safety devices, and in particular, it is a flame arrestor for a coal gasification flare pipeline. Background Technology

[0002] The ammonia synthesis plant is equipped with a flare protection system. When a problem occurs in the gasification system, the syngas from the gasification process is vented into the flare system. A continuous flame is installed at the top of the flare, ensuring a constant burning flame.

[0003] The flare system pipes are relatively thick, DN1000mm. There is a risk that the flame at the flare head may backflow into the flare pipes. The flame arrestor originally designed for the flare system has high resistance. When the gasification system is vented (when the coal gasification unit releases syngas into the flare system for combustion due to production needs, the syngas will pass through the flare flame arrestor), the flame arrestor core is frequently damaged, resulting in high maintenance costs and safety risks. Utility Model Content

[0004] The purpose of this invention is to solve the problems of high resistance, low strength, and easy failure of existing flame arresting devices, and to propose a flame arresting device for coal gasification flare pipelines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a flame arresting device for a coal gasification flare pipeline, comprising a device housing installed on the flare pipeline, and stainless steel perforated plate corrugated packing and tubular gas distribution pipe sequentially arranged inside the device housing along the coal gasification syngas flow direction. Stainless steel perforated plate corrugated packing consists of several bent metal corrugated sheets, with channels formed between adjacent metal corrugated sheets; The tubular gas distribution pipe includes a pair of steel pipe support plates and several stainless steel pipes distributed between the pair of steel pipe support plates. The stainless steel pipes are fixed to the pair of steel pipe support plates.

[0006] As a further preferred option, the stainless steel perforated plate corrugated packing has several small holes distributed on it.

[0007] As a further preferred embodiment, the channel formed between multiple adjacent corrugated metal sheets has a wavy cross-section, with a channel area of ​​approximately 8 cm². 2 .

[0008] As a further preferred embodiment, the device housing includes a central annular structure, and gas inlets and gas outlets at both ends of the annular structure, the diameters of which are smaller than those of the annular structure; the annular structure is provided with a transition section with a gradually changing diameter between it and the gas inlets and gas outlets; the gas inlets and gas outlets of the device housing are fixedly connected to the flare pipe via fixed flanges. As a further preferred option, both the stainless steel perforated plate corrugated packing and the tubular gas distribution pipe are cylindrical structures that match the annular structure.

[0009] As a further preferred option, a fixing bracket is provided between the stainless steel orifice plate corrugated packing and the tubular gas distribution pipe for fixing.

[0010] As a further preferred embodiment, the mounting bracket includes an outer ring, an inner ring, and a support column connecting the outer ring and the inner ring, with the outer ring fixed to the inner wall of the device housing.

[0011] As a further preferred option, the device housing is also equipped with a built-in fixing baffle for positioning the tubular gas distribution pipe on the fixed support.

[0012] This utility model has the following advantages: 1. The device casing is designed according to PN4.0 to increase casing strength; 2. Reduce the resistance of the flame arrester core; 3. A multi-layered reinforcement mechanism is installed to enhance the strength of the flame arrestor core and reduce the chance of damage to the core. 4. An internal metal mesh (fixed bracket) flame arrestor core is installed to prevent fire in case of accident. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the internal structure of the present invention; Figure 2 This is a schematic diagram of the structure of a stainless steel perforated plate corrugated packing. Figure 3 This is a schematic diagram of the fixed support structure; Figure 4 This is a schematic diagram of a tubular gas distribution pipe. Figure 5 This is a structural diagram of an external fixed flange; In the diagram: 1. Fixed flange, 2. Stainless steel orifice plate corrugated packing, 3. Fixed bracket, 4. Pipeline gas distribution pipe, 5. Internal fixed baffle, 6. External fixed flange, 7. Device casing. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] This utility model discloses a flame arrestor for a coal gasification flare pipeline, including a device housing 7 installed on the flare pipeline. The device housing 7 is designed according to PN2.5 and can withstand a pressure of 2.5MPa, thereby increasing the strength of the housing.

[0016] The device housing 7 includes a central annular structure and gas inlets and gas outlets at both ends of the annular structure. The diameters of the gas inlets and gas outlets are smaller than those of the annular structure. The annular structure is provided with a transition section with a gradually changing diameter between it and the gas inlets and gas outlets. The gas inlets and gas outlets of the device housing 7 are fixedly connected to the flare pipes via fixed flanges 1.

[0017] The device housing 7 is divided into two parts to facilitate the installation, inspection and maintenance of internal components. The two parts of the device housing 7 are fixedly connected to each other by external fixing flanges 6 to form an integral device housing 7.

[0018] The outer casing 7 of the device is provided with stainless steel perforated plate corrugated packing 2 and tubular gas distribution pipe 4 in sequence along the direction of coal gasification syngas flow.

[0019] The stainless steel perforated plate corrugated packing 2 is composed of several bent metal corrugated sheets, which are connected together by welding, and channels are formed between adjacent metal corrugated sheets; the stainless steel perforated plate corrugated packing 2 has several small holes, the corrugation apex angle is about 90 degrees, the channel formed by the corrugation is at an angle of 30 degrees to the vertical direction, and the flow channels of two adjacent corrugated sheets are at 90 degrees.

[0020] The stainless steel perforated plate corrugated packing 2 has a uniformly distributed geometric pattern, a compact structure, low resistance, and improved gas flow path. The geometric pattern provides more surface area, resulting in a large throughput. It maximizes the contact area between the small flame and the channel wall, enhances heat transfer, and reduces the flame temperature below the ignition point, thereby preventing flame spread.

[0021] The channels formed between multiple adjacent corrugated metal sheets have a wavy cross-section (i.e., a channel is formed by multiple corrugated metal sheets), and the channel area is approximately 8 cm². 2 Compared to the original channel cross-sectional area of ​​2cm 2 It has a larger ventilation volume and rigidity, which can effectively reduce the resistance of the flame arrestor core; and the rigid structure composed of metal corrugated sheets has high strength, and the fixing blocks around the perimeter can also enhance the structural strength.

[0022] The tubular gas distribution pipe 4 includes a pair of steel pipe support plates and several stainless steel pipes distributed between the pair of steel pipe support plates. The stainless steel pipes are fixed to the pair of steel pipe support plates. The tubular gas distribution pipe 4 reduces the gas flow rate. If there is a flame, the flame will be cooled in the narrow channel. When the flame is divided to a certain extent, the heat removed through the channel is sufficient to lower the temperature below the ignition point of the combustible material, thus extinguishing the flame.

[0023] The stainless steel pipe has a diameter of φ8, a wall thickness of 1mm, and a length of 150mm. It is welded to a pair of steel pipe support plates, forming a cylindrical whole. The circular steel pipe support plates support the pipe.

[0024] Both the stainless steel perforated plate corrugated packing 2 and the tubular gas distribution pipe 4 are cylindrical structures that match the annular structure.

[0025] A fixing bracket 3 is provided between the stainless steel perforated plate corrugated packing 2 and the tubular gas distribution pipe 4 for fixing. The fixing bracket 3 includes an outer ring, an inner ring, and eight pillars connecting the outer ring and the inner ring. The outer ring is fixed to the inner wall of the device housing 7 and is installed after the stainless steel perforated plate corrugated packing to fix and support it, preventing the stainless steel perforated plate corrugated packing 2 from deforming under stress.

[0026] A metal fixing bracket 3 with a thickness of about 20mm is set behind the metal corrugated sheet to help fix the stainless steel perforated plate corrugated packing 2, prevent the stainless steel perforated plate corrugated packing 2 from being blown away from the center by the airflow, and play a role in isolation and fixation.

[0027] The device housing 7 is also equipped with a built-in fixing baffle 5 for positioning the tubular gas distribution pipe 4 on the fixing bracket 3.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A flame arrestor for a coal gasification flare pipeline, characterized in that: The device includes a housing (7) installed on the flare pipe, and stainless steel perforated plate corrugated packing (2) and tubular gas distribution pipe (4) are sequentially arranged inside the housing (7) along the coal gasification syngas flow direction. The stainless steel perforated plate corrugated packing (2) is composed of several bent metal corrugated sheets, and channels are formed between adjacent metal corrugated sheets. The tubular gas distribution pipe (4) includes a pair of steel pipe support plates and several stainless steel pipes distributed between the pair of steel pipe support plates, with the stainless steel pipes fixed to the pair of steel pipe support plates.

2. The flame arrestor for a coal gasification flare pipeline according to claim 1, characterized in that: The stainless steel perforated plate corrugated packing (2) has several small holes distributed on it.

3. The flame arrestor for a coal gasification flare pipeline according to claim 1, characterized in that: The channels formed between multiple adjacent corrugated metal sheets have a wavy cross-section and a channel area of ​​approximately 8 cm². 2 .

4. The flame arrestor for a coal gasification flare pipeline according to claim 1, characterized in that: The device housing (7) includes a central annular structure and gas inlets and gas outlets at both ends of the annular structure. The diameters of the gas inlets and gas outlets are smaller than those of the annular structure. The annular structure is provided with a transition section with a gradually changing diameter between it and the gas inlets and gas outlets. The gas inlets and gas outlets of the device housing (7) are fixedly connected to the flare pipes via fixed flanges (1).

5. A flame arrestor for a coal gasification flare pipeline according to claim 1, characterized in that: The stainless steel perforated plate corrugated packing (2) and the tubular gas distribution pipe (4) are both cylindrical structures that match the annular structure.

6. A flame arrestor for a coal gasification flare pipeline according to claim 4, characterized in that: A fixing bracket (3) is provided between the stainless steel perforated plate corrugated packing (2) and the tubular gas distribution pipe (4) for fixing.

7. A flame arrestor for a coal gasification flare pipeline according to claim 6, characterized in that: The fixed bracket (3) includes an outer ring, an inner ring, and a support column connecting the outer ring and the inner ring. The outer ring is fixed to the inner wall of the device housing (7).

8. A flame arrestor for a coal gasification flare pipeline according to claim 6, characterized in that: The device housing (7) is also provided with an internal fixing baffle (5) for positioning the tubular gas distribution pipe (4) on the fixing bracket (3).

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