A pit-type flare

Abstract

The utility model discloses a pit type torch relates to combustible tail gas processing technical field, including pit, torch head, airway, drainage canal and gas pipeline, the pit is set down from ground, the pit is the rectangular structure of long side along the horizontal direction arrangement, the short side one side of pit is inlaid with torch head, and the head of torch head is located pit inboard, and the tail of torch head is connected with gas pipeline, torch head flame that torch head spouts is along the length direction horizontal combustion of pit, and the pit is connected with airway, and airway is communicated with the atmosphere on ground, and the pit is connected with drainage canal, the utility model discloses can be applied to petrochemical industry and coal chemical industry torch gas processing field, has solved the problem that present torch type, construction and maintenance cost and processing capacity can not be considered simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of combustible exhaust gas treatment technology, specifically a pit-type flare. Background Technology

[0002] A flare is an industrial device used to incinerate combustible waste gases (such as refinery gas, toxic gases, biogas, etc.), converting them into low-hazard substances such as carbon dioxide and water through combustion, thus combining safe emission and environmental protection functions. Existing industrial flare styles include elevated flares, enclosed ground flares, and open ground flares.

[0003] The elevated flare flame is far from the ground and can treat a large volume of waste gas, but it is noisy and has strong heat radiation. It requires a supporting high-altitude tower, which results in high construction and maintenance costs and relatively high construction difficulty. It is suitable for large-scale waste gas treatment in oil refineries, chemical plants and other similar facilities.

[0004] Enclosed ground-based flare combustion chambers isolate the gas from the external environment, offering high safety; however, they have a complex structure, higher cost, and smaller gas processing capacity. According to SH / T3009-2013, their waste gas treatment capacity should not exceed 100 t / h. They are suitable for treating highly toxic waste gases or those with stringent environmental protection requirements.

[0005] Open-air ground-based flares burn near the ground, resulting in low noise and minimal heat radiation; however, their processing capacity is limited, they cannot handle toxic gases, and they require too much space. Due to various restrictions on industrial land use, they are rarely used in practical project construction. They are suitable for low-flow or intermittent emission scenarios. Utility Model Content

[0006] This invention overcomes the shortcomings of the prior art by proposing a pit-type flare; it solves the problem that existing flare types cannot simultaneously meet the requirements of construction and maintenance costs and processing capacity.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] A pit-type flare includes a pit, a flare head, a ventilation duct, a drainage ditch, and a gas supply pipe. The pit extends downwards from the ground and is a rectangular structure with its long side running horizontally. A flare head is buried on one of the short sides of the pit, with its head located inside the pit and its tail connected to the gas supply pipe. The flare head emits a flame that burns horizontally along the length of the pit. The pit is connected to a ventilation duct that communicates with the atmosphere above ground. A drainage ditch is also connected to the pit.

[0009] Furthermore, multiple pits are set up in parallel on the ground, and each pit is connected to a torch head.

[0010] Furthermore, multiple torch heads are connected to the gas supply pipeline via branch pipes.

[0011] Furthermore, the gas pipeline is laid on the ground.

[0012] Furthermore, the bottom of the pit has an arc-shaped structure, forming a U-shaped pit.

[0013] Furthermore, the outer surface of the U-shaped pit is provided with castable material to isolate the heat radiation of the torch head flame.

[0014] Furthermore, an insulation wall is installed around the outer perimeter of the pit.

[0015] Furthermore, the torch head is connected to an ever-burning lamp, which is located inside the pit.

[0016] Furthermore, ventilation ducts are connected to both sides of the pit.

[0017] Furthermore, the drainage ditch is located on the side of the pit away from the torch head.

[0018] The beneficial effects of this utility model compared to the prior art are as follows:

[0019] 1. This utility model facilitates the inspection and maintenance of the entire flare area by the owner, reducing costs and increasing efficiency.

[0020] 2. When treating the same amount of waste gas, the pit-type flare described in this utility model does not require the addition of a tower and its auxiliary pipelines compared to an elevated flare, which greatly reduces the waste of resources such as steel structure, piping, and energy consumption.

[0021] 3. When treating the same amount of waste gas, the pit-type flare described in this utility model will occupy a much smaller area compared to the open ground flare.

[0022] 4. Compared with enclosed ground flares, the pit-type flares described in this utility model have a significantly enhanced capacity to treat waste gas.

[0023] This invention can be applied to flare gas treatment in the petrochemical and coal chemical industries, specifically for treating flare gas volumes greater than 100 t / h, while achieving relatively low construction and maintenance costs. In sites with limited space, this invention maximizes space utilization and improves flare gas treatment capacity. Attached Figure Description

[0024] Figure 1 This is a front view of the layout of the pit-type torch described in this utility model;

[0025] Figure 2 This is a side view of the pit-type torch layout described in this utility model;

[0026] Figure 3 This is a top view of the pit-type torch layout described in this utility model;

[0027] Figure label:

[0028] 1. Torch head; 2. Torch head flame; 3. Continuous light; 4. Insulation wall; 5. U-shaped pit; 6. Ventilation duct; 7. Drainage ditch; 8. Gas supply pipeline; 9. Castable refractory. Detailed Implementation

[0029] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. The technical solution of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0030] See Figures 1 to 3 This embodiment proposes a pit-type flare, including a flare head 1, a flare head flame 2, a continuous lamp 3, a heat insulation wall 4, a U-shaped pit 5, a ventilation duct 6, a drainage ditch 7, an air supply pipeline 8, and a castable refractory 9.

[0031] Three U-shaped pits 5 are set parallel to each other on the ground. The main view of each U-shaped pit 5 is rectangular, while its lateral view is U-shaped. A flare head 1 is buried on one of the shorter sides of each U-shaped pit 5. The head of the flare head 1 is located inside the U-shaped pit 5, and the tail of the flare head 1 extends out of the ground and connects to the gas pipeline 8 laid on the ground. The arrangement of the flare heads 1 on the shorter side allows the flame 2 to burn along the length of the U-shaped pit 5, and ensures that the direction of the flame emitted by the flare head 1 is as close as possible to the uninhabited area. The flare heads 1 are horizontally placed in the U-shaped pits 5 so that the flame 2 can burn horizontally. The length of the flame 2 is controlled to be within 50m as much as possible.

[0032] In this embodiment, to minimize the flame length, the gas pipeline 8 is connected to three branch pipes, corresponding to three torch heads 1, and each torch head 1 corresponds to three U-shaped pits 5 on the ground. Alternatively, depending on the actual gas volume, the gas pipeline 8 can be connected to n branch pipes, corresponding to n torch heads 1 and n U-shaped pits 5 on the ground.

[0033] Each U-shaped pit 5 has ventilation ducts 6 connected to both sides. The ventilation ducts 6 are connected to the atmosphere above ground. The function of the ventilation ducts 6 is to provide sufficient combustion air to the U-shaped pit 5, thereby supplementing the flame 2 of the torch head with a large amount of oxygen to aid combustion.

[0034] The outer surface of the U-shaped pit 5 is cast with castable refractory 9 to isolate the heat radiation of the torch flame 2 and facilitate observation of the combustion of the torch 1. It also greatly saves the owner's maintenance costs for equipment and pipelines in the later stage.

[0035] Heat insulation walls 4 are installed around the outer perimeter of the U-shaped pits 5 on both sides to isolate the heat radiation of the torch flame 2 and to protect the personal safety of the factory employees.

[0036] Each U-shaped pit 5 is connected to a drainage ditch 7 on the side away from the torch head 1; the drainage ditch 7 is used to drain the water in the U-shaped pit 5 in a timely manner to prevent excessive water accumulation in the U-shaped pit 5 from affecting the combustion of the torch head flame 2.

[0037] The torch head 1 is connected to a continuous lamp 3, which is located inside the U-shaped pit 5. The continuous lamp 3 is ignited by a ground explosion device, and then the continuous lamp 3 ignites the torch head 1.

[0038] The pit-type flare proposed in this embodiment can be applied to the flare gas treatment field in the petrochemical and coal chemical industries. More specifically, it is suitable for treating flare gas volumes greater than 100 t / h and can effectively reduce construction and maintenance costs.

[0039] When treating the same amount of exhaust gas, compared to an elevated flare, a pit-type flare does not require an additional tower and its associated pipelines, greatly reducing the waste of resources such as steel structure, piping, and energy consumption.

[0040] When treating the same amount of exhaust gas, a pit-type flare requires significantly less floor space compared to an open ground flare.

[0041] Compared to enclosed ground flares, pit-type flares have a significantly greater capacity to process waste gas.

[0042] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments. It should not be considered that the specific embodiments of the present invention are limited to this. For those skilled in the art, several simple deductions or substitutions can be made without departing from the present invention, and all such deductions or substitutions should be considered to fall within the scope of patent protection determined by the submitted claims.

Claims

1. A pit flare, characterized in that, It includes a pit, a flare head (1), a ventilation duct (6), a drainage ditch (7), and an air supply pipe (8); the pit is set from the ground downwards; the pit is a rectangular structure with its long side set horizontally; a flare head (1) is buried on one side of the short side of the pit, the head of the flare head (1) is located inside the pit, and the tail of the flare head (1) is connected to the air supply pipe (8); the flare head flame (2) emitted by the flare head (1) burns horizontally along the length of the pit; the pit is connected to the ventilation duct (6), which is connected to the atmosphere above ground; the pit is connected to the drainage ditch (7).

2. A pit torch according to claim 1, wherein Multiple pits are set up in parallel on the ground, and each pit is connected to a torch head (1).

3. A pit torch according to claim 2, wherein Multiple torch heads (1) are connected to the gas pipeline (8) via branch pipes.

4. A pit-type torch according to claim 3, characterized in that, The gas pipeline (8) is laid on the ground.

5. A pit-type flare according to claim 1 or 2, characterized in that, The bottom of the pit is an arc-shaped structure, forming a U-shaped pit (5).

6. A pit-type flare according to claim 1, characterized in that, The outer surface of the U-shaped pit (5) is provided with castable material (9) for isolating the heat radiation of the torch head flame (2).

7. A pit-type flare according to claim 1, characterized in that, Insulation walls are installed around the outer perimeter of the pit (4).

8. A pit-type flare according to claim 1, characterized in that, The torch head (1) is connected to a perpetual lamp (3), which is located inside the pit.

9. A pit-type flare according to claim 1, characterized in that, Ventilation ducts are connected to both sides of the pit (6).

10. A pit-type flare according to claim 1, characterized in that, The drainage ditch (7) is located on the side of the pit away from the torch head (1).

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