Ground torch combustion system suitable for oversized emission of high-carbon gas

Abstract

The utility model discloses a ground torch combustion system suitable for oversized emission of high-carbon gas, and relates to the technical field of combustible tail gas treatment. Comprising a flare tower, a combustor, an air duct and an ignition device, a plurality of forced smoke abatement combustors are arranged around the dead center of the flare tower; a plurality of forced smoke abatement combustors which are arranged into a straight line are arranged at the edge of the flare tower in a radiation manner by taking the part between every two adjacent forced smoke abatement combustors as a starting point; the multiple stages of hexagonal natural air inducing and smoke eliminating combustors are concentric with the center of the flare tower and located at the position close to the edge of the flare tower from inside to outside, and each hexagon is formed by sequentially arranging a plurality of natural air inducing and smoke eliminating combustors; the forced smoke abatement combustor is connected with a forced air inducing pipeline; the natural air inducing duct is arranged in a radioactive manner by taking the center of the flare tower as an original point; the utility model solves the problem that the existing torch type, the construction and maintenance cost and the handling capacity cannot be considered at the same time.

Description

Technical Field

[0001] This utility model relates to the field of combustible exhaust gas treatment technology, specifically a ground flare combustion system adapted to ultra-large emissions of high-carbon gases. 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] For flared gases with extremely large emissions, high carbon content, and non-toxic properties, ground-based flare systems are suitable when enterprises face land scarcity. Therefore, a new type of ground-based flare system has been researched and developed to address this current situation. However, when using ground-based flare systems for flared gases with extremely large emissions, high carbon content, and non-toxic properties, insufficient oxygen supply can easily lead to black smoke emissions. Furthermore, the large footprint of ground-based flare systems presents a dilemma for enterprises with limited available land. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art and proposes a ground flare combustion system adapted to ultra-large emissions of high-carbon gases; it solves the problem that existing flare types cannot simultaneously meet the requirements of construction and maintenance costs and processing capacity.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A ground-based flare combustion system adapted to ultra-large emissions of high-carbon gases includes a flare tower, burners, air ducts, and an ignition device. The flare tower has air ducts and burners at its base. The burners include forced smoke extinguishing burners and naturally induced smoke extinguishing burners. Multiple forced smoke extinguishing burners are arranged around the center of the flare tower. Multiple straight lines of forced smoke extinguishing burners radiate outwards from the points between adjacent forced smoke extinguishing burners, with each forced smoke extinguishing burner in each straight line arranged sequentially adjacent to the others. Concentric with the center of the flare tower and located near its edge, multiple levels of hexagonal naturally induced smoke extinguishing burners are arranged from the inside out, each hexagon consisting of multiple naturally induced smoke extinguishing burners arranged sequentially.

[0007] The air duct includes a natural air intake duct and a forced air intake duct; the forced smoke extinguishing burner is connected to the forced air intake duct, and the forced air intake duct forces air into the forced smoke extinguishing burner through the forced air intake fan; the natural air intake duct is arranged radially with the center of the flare tower as the origin, and the air intake of the natural air intake duct is located outside the flare tower, and the air outlet is located inside the flare tower.

[0008] Furthermore, the outer wall of the flare tower is constructed by on-site splicing of carbon steel plates, and the flare tower as a whole has a vertical cylindrical structure.

[0009] Furthermore, multiple forced smoke-extinguishing burners are arranged in the center, and multiple sets of ignition devices are evenly distributed around them. Multiple sets of ignition devices are evenly distributed at the multi-stage hexagonal natural draft smoke-extinguishing burners.

[0010] Furthermore, each ignition device includes a main ignition device and a backup ignition device; the main ignition device is a skid-shaped unit consisting of a flame transmitter and a continuous lamp; the backup ignition device is an electromagnetic igniter.

[0011] Furthermore, it also includes a flame detection system, which consists of thermocouples and ultraviolet flame detectors; the thermocouples are installed inside the continuous lamp, and the ultraviolet flame detectors are installed on the flare tower.

[0012] Furthermore, the forced draft duct is divided into a main duct that transports air through an induced draft fan, a mother smoke elimination duct that distributes air to each stage of the exhaust duct, and a sub-smoke elimination duct for each forced smoke elimination burner; air is delivered to each forced smoke elimination burner through the main duct, the mother smoke elimination duct, and the sub-smoke elimination duct.

[0013] Furthermore, the natural air intake duct is made of concrete or brick.

[0014] The beneficial effects of this utility model compared to the prior art are as follows:

[0015] This invention overcomes the drawback of black smoke emission caused by insufficient oxygen supply when using ground-based flare systems for venting gases with extremely large emissions, high carbon content, and non-toxic properties. It also solves the problem of limited available land for businesses, saving land and reducing economic investment. This invention is suitable for situations where the venting volume is ≥200t / h, the gas has a high carbon content, is non-toxic, and the available land for the business is limited. Attached Figure Description

[0016] Figure 1 This is a plan view showing the arrangement of the forced smoke extinguishing burner and the naturally induced smoke extinguishing burner in the embodiment;

[0017] Figure 2 This is an elevation view of the flare tower in the embodiment;

[0018] Figure 3 This is a plan view of the natural airflow duct layout in the embodiment;

[0019] Figure 4 This is a cross-sectional view of the natural airflow duct in the embodiment.

[0020] Figure label:

[0021] 1. Flame tower; 2. Forced smoke extinguishing burner; 3. Natural draft smoke extinguishing burner; 4. Natural draft duct; 5. Forced draft duct; 6. Main ignition device; 7. Backup ignition device; 8. Flame detection system. Detailed Implementation

[0022] 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.

[0023] See Figures 1 to 4 This embodiment proposes a closed ground flare combustion system adapted to ultra-large emissions and high carbon component gases, including a flare tower 1, a forced smoke extinguishing burner 2, a natural draft smoke extinguishing burner 3, a natural draft duct 4, a forced draft duct 5, a main ignition device 6, a backup ignition device 7, and a flame detection system 8.

[0024] The outer wall of the flare tower 1 is assembled on-site using carbon steel plates. The interior uses ceramic fiber modules that can withstand temperatures up to 1200℃ and is coated with a rainproof and erosion-resistant coating for heat insulation. Due to the extremely large venting capacity, the flare tower 1 is divided into several units according to SH3009-2013, and the maximum allowable venting capacity of each flare tower 1 is 100t / h.

[0025] The flare tower 1 has a vertical cylindrical structure. The bottom of the flare tower 1 is equipped with air ducts and burners. The burners include forced smoke extinguishing burners 2 and naturally induced smoke extinguishing burners 3. Six forced smoke extinguishing burners 2 are arranged around the center of the flare tower 1. Starting from the point between each adjacent pair of forced smoke extinguishing burners 2, six straight lines of forced smoke extinguishing burners 2 radiate outwards from the edge of the flare tower 1. Each forced smoke extinguishing burner 2 in each straight line is arranged sequentially adjacent to each other, forming a snowflake-shaped hexagonal structure. Around the center of the flare tower 1, near the edge of the flare tower 1, three levels of hexagonal naturally induced smoke extinguishing burners 3 are arranged from the inside out. Each hexagon... The system consists of multiple naturally induced draft smoke-eliminating burners 3 arranged sequentially. The arrangement of the two burners in this embodiment ensures that the distance between each burner stage is sufficient to draw in enough air, guaranteeing that the large volume of high-carbon gas entering the flare tower 1 can be ignited simultaneously. Both the forced draft smoke-eliminating burner 2 and the naturally induced draft smoke-eliminating burner 3 are existing structures, both utilizing the Venturi principle for air intake. The difference lies in that the forced draft smoke-eliminating burner 2 uses the pressure generated by a forced air supply from a fan to draw in air, while the naturally induced draft smoke-eliminating burner 3 utilizes the suction generated by the upward flow of air during combustion. In this embodiment, the forced draft smoke-eliminating burner 2 is a Riello RS70 / M, and the naturally induced draft smoke-eliminating burner 3 is an FZ-QEF. The cooperation between the two burners significantly reduces the size of the fan, thereby reducing costs while still achieving smokeless combustion.

[0026] The forced smoke extinguishing burner 2 is equipped with a forced air duct 5. The forced air duct 5 is a steel pipe through which air is forcibly delivered into the forced smoke extinguishing burner 2 by an induced draft fan. The forced air duct 5 is divided into a main pipe that delivers air through the induced draft fan, a mother smoke extinguishing pipe that distributes air to each stage of the exhaust pipe, and a daughter smoke extinguishing pipe for each forced smoke extinguishing burner 2. Air is delivered to each forced smoke extinguishing burner 2 through the main pipe, the mother smoke extinguishing pipe, and the daughter smoke extinguishing pipes.

[0027] The natural draft duct 4 is made of concrete or brick. It is arranged radially with the center of the flare tower 1 as the origin. The air intake is located outside the flare tower 1, and the air outlet is located inside the flare tower 1. The distance from the center is arranged according to the arrangement of the burners. The natural draft duct 4 draws air from outside the flare tower 1 into the flare tower 1 through the chimney effect, increases the amount of air inside the flare tower 1, and ensures 100% combustion of the released air.

[0028] The main ignition device 6 adopts an indirect ignition mode and consists of a flame transmitter and a continuous lamp in a skid-mounted configuration. The number of skid-mounted devices is determined according to the arrangement of the forced smoke-extinguishing burners 2 and the naturally induced smoke-extinguishing burners 3. The backup ignition device 7 uses electromagnetic ignition and serves as a backup when the main ignition device 6 fails to start normally; the continuous lamp remains constantly lit. In this embodiment, six forced smoke-extinguishing burners 2 are arranged in the center, with three sets of ignition devices evenly distributed around them. Three sets of ignition devices are also evenly distributed at the three-stage hexagonal naturally induced smoke-extinguishing burners 3. Each set of ignition devices includes one main ignition device 6 and one backup ignition device 7. The main ignition device 6 and the backup ignition device 7 ensure that the continuous lamp remains lit and that the burners on each stage of the venting duct are ignited.

[0029] The flame detection system 8 employs two modes, with mutual backup to ensure the safety of the device. The flame detection system 8 consists of a thermocouple and an ultraviolet (UV) flame detector to ensure the safety of the ground flare system. The thermocouple is installed inside the continuous flame lamp to monitor its operation, while the UV flame detector is installed on the flare tower 1 to monitor the combustion status within the flare tower 1. Any abnormalities can be promptly detected and warnings issued to ensure system safety. The main ignition device 6, the backup ignition device 7, and the flame detection system 8 described in this embodiment are all existing structures.

[0030] The main ignition device 6, the backup ignition device 7, and the flame detection system 8 are used to ensure the safety of the ground flare system, and each vent can be 100% ignited.

[0031] The closed-loop ground flare combustion system described in this embodiment is suitable for applications where the venting air volume is ≥200t / h, the gas has a high carbon content, is non-toxic, and the available land for the enterprise is limited.

[0032] 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 ground-based flare combustion system adapted to ultra-large emissions of high-carbon gases, comprising a flare tower (1), a burner, an air duct, and an ignition device; the bottom of the flare tower (1) is provided with an air duct and a burner; characterized in that, The burner includes a forced smoke extinguishing burner (2) and a natural draft smoke extinguishing burner (3); multiple forced smoke extinguishing burners (2) are arranged around the center of the flare tower (1); multiple forced smoke extinguishing burners (2) are arranged in a straight line radiating outward from each pair of adjacent forced smoke extinguishing burners (2) as the starting point; each forced smoke extinguishing burner (2) in each straight line is arranged adjacent to each other; multiple hexagonal natural draft smoke extinguishing burners (3) are arranged from the inside out, concentric with the center of the flare tower (1) and located near the edge of the flare tower (1), each hexagon is composed of multiple natural draft smoke extinguishing burners (3) arranged in a straight line; The air duct includes a natural air duct (4) and a forced air duct (5); the forced smoke extinguishing burner (2) is connected to the forced air duct (5), and the forced air duct (5) forces air into the forced smoke extinguishing burner (2) through the induced draft fan; the natural air duct (4) is arranged radially with the center of the flare tower (1) as the origin, and the air inlet of the natural air duct (4) is located outside the flare tower (1), and the air outlet is located inside the flare tower (1).

2. The ground flare combustion system adapted to ultra-large emissions of high-carbon gases according to claim 1, characterized in that, The outer wall of the torch tower (1) is made of carbon steel plates assembled on site, and the torch tower (1) has an overall vertical cylindrical structure.

3. A ground-based flare combustion system adapted to ultra-large emissions of high-carbon gases according to claim 1, characterized in that, Multiple forced smoke-extinguishing burners (2) are arranged in the center, and multiple sets of ignition devices are evenly distributed around them. Multiple sets of ignition devices are evenly distributed at the multi-stage hexagonal natural draft smoke-extinguishing burners (3).

4. A ground-based flare combustion system adapted to ultra-large emissions of high-carbon gases according to claim 3, characterized in that, Each ignition device includes a main ignition device (6) and a backup ignition device (7); the main ignition device (6) is a pry bar consisting of a flame transmitter and a continuous lamp; the backup ignition device (7) is an electromagnetic igniter.

5. A ground-based flare combustion system adapted to ultra-large emissions of high-carbon gases according to claim 4, characterized in that, It also includes a flame detection system (8), which includes a thermocouple and an ultraviolet flame detector; the thermocouple is installed inside the lamp and the ultraviolet flame detector is installed on the torch tower (1).

6. A ground-based flare combustion system adapted to ultra-large emissions of high-carbon gases according to claim 1, characterized in that, The forced draft duct (5) is divided into a main duct that delivers air through the draft fan, a mother smoke duct that distributes air to each stage of the exhaust duct, and a sub-smoke duct for each forced smoke burner (2); air is delivered to each forced smoke burner (2) through the main duct, the mother smoke duct and the sub-smoke duct.

7. A ground-based flare combustion system adapted to ultra-large emissions of high-carbon gases according to claim 1, characterized in that, The natural air intake duct (4) is made of concrete or brick.

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