Energy-saving anti-smoldering gasification torch

Abstract

The utility model provides an energy-saving anti-smoldering gasification torch. The energy-saving anti-smoldering gasification torch comprises an incandescent light, a barrel, a plurality of sub torches and a check valve. Wherein the plurality of sub torches are wrapped by the cylinder body, and each sub torch pipeline is provided with a check valve. A conventional single large torch is replaced by a plurality of small sub torches, so that the flare gas still has a relatively high outlet flow rate during small-flow discharge, and the problem that the service life of the torch is shortened due to smoldering of the flare gas in a barrel during small-flow discharge of a conventional gasification torch is solved. In addition, only 1-2 sets of incandescent lights are kept running at ordinary times, the running time of the incandescent lights is shortened, and running energy consumption is reduced.

Description

Technical Field

[0001] This application relates to the field of waste gas treatment technology, and in particular to an energy-saving gasification flare that prevents smoldering. Background Technology

[0002] In the coal chemical industry, coal gasification produces large amounts of hydrogen, carbon monoxide, carbon dioxide, and water vapor. Therefore, the molecular weight of the emitted gasification flare gas is generally low, resulting in a large volumetric flow rate for the same processing capacity. To prevent flameout due to excessive flare outlet velocity in the event of an accident, the gasification flare head outlet typically has a diameter change, meaning the flare head's outlet area increases. However, as a safety device, the flare gas flow rate is usually very small, less than 10% of the maximum designed processing capacity. Because the gasification flare head outlet area is large, and the outlet velocity is very low during routine low-flow emissions, coupled with the flare's high altitude and the influence of wind pressure, the flare gas is easily trapped and smolders, leading to prolonged smoldering and reduced flare head lifespan.

[0003] To prevent the flare gas from failing to ignite promptly during low-flow emissions, at least four sets of continuous lights are generally required when the flare head outlet diameter is greater than 1 meter. These continuous lights need to operate for extended periods. Assuming an enterprise operates for 7,000 hours per year, the four sets of continuous lights consume approximately 560,000 standard cubic meters of natural gas annually, resulting in significant operating costs and substantial carbon emissions. Summary of the Invention

[0004] This application provides an energy-saving and anti-smoldering gasification flare, which can be used to solve the technical problem of energy waste in gasification flares.

[0005] An energy-saving anti-smoldering gasification flare includes a continuous lamp, a cylinder, multiple sub-flares, and a check valve; wherein, the cylinder encloses multiple sub-flares, and a check valve is provided on the pipe corresponding to each sub-flare; the continuous lamp is located on the outside of the cylinder.

[0006] The opening pressures of any two check valves are different, and the corresponding number of check valves are opened according to the size of the flare gas discharge flow.

[0007] The number of sub-flames ranges from 2 to 7; there are two types of sub-flames, namely edge sub-flames and center sub-flames; the edge sub-flames are set close to the inner wall of the cylinder; the center sub-flames are set at the center of the edge sub-flames and do not contact the inner wall of the cylinder.

[0008] The central torch has a cylindrical wall;

[0009] The outer wall of the fringe torch is a reducing pipe; the diameter of the upper part of the fringe torch is larger than that of the lower part, and the middle part is a transition slope; the shape of the part in contact with the main body fits the shape of the main body; the height range of the transition slope is 0.2H to 0.3H, where H is the height of the torch head, and the slope angle Φ is 100° to 110°.

[0010] When the number of sub-torches is less than or equal to 4, the sub-torches only include the edge sub-torches; when the number of sub-torches is greater than 4, the sub-torches include the edge sub-torches and the center sub-torches, and there is only one center sub-torch.

[0011] The opening pressure of the check valve corresponding to the i-th sub-flame is P. i If P1 < P2 < ... < Pn, then n is the number of sub-torches, and the value of n ranges from 2 to i.

[0012] The exit area of ​​the sub-flame can take two forms: the exit area is equal, or the exit area of ​​the sub-flame has multiple values.

[0013] For ease of maintenance, check valves are installed on the ground pipelines. Each check valve on the sub-flare pipeline has a different opening pressure, and the corresponding number of check valves are opened according to the flare gas discharge flow rate. The four sub-flares with the lowest opening pressure are installed close to the inner wall of the cylinder, and the continuous warning lights are placed near these four sub-flares.

[0014] The beneficial effects of this invention are: (1) Multiple small sub-flames replace the conventional single large flame. During daily low-flow emissions, only 1 to 2 sub-flames are turned on. The flame head outlet area of ​​the sub-flames can ensure that the flame gas still has a large outlet flow rate during low-flow emissions, which solves the problem that the flame gas burns inside the cylinder during low-flow emissions of conventional gasification flames, thus reducing the flame life; (2) During daily operation, only 1 to 2 sets of constant-light lamps need to be kept running. The other constant-light lamps are interlocked with the check valves of the paired sub-flames. When the check valves are opened, they are automatically ignited. At other times, they do not need to be run, which significantly reduces the running time of the constant-light lamps and saves operating costs. Attached Figure Description

[0015] Figure 1 A top view of the gasification torch structure provided in this application embodiment;

[0016] Figure 2 The front view of the gasification torch structure provided in this application embodiment;

[0017] Figure 3 Comparison diagram of gasification torch sub-flame and traditional gasification torch provided in the embodiments of this application;

[0018] 3(a) is the front view and top view of the edge sub-flare tube; 3(b) is the front view and top view of the center sub-flare tube; 3(c) is the front view and top view of the conventional gasification flare outlet, where the flare outlet area is A;

[0019] Figure 4 The embodiments of this application provide an arrangement diagram when the number of sub-torches is 2 to 6.

[0020] Wherein: 1-Continuous light; 2-Cylinder body; 3-Sub-flame; 4-Check valve; 5-Sub-flame cylinder body. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0022] The embodiments of this application will now be described in conjunction with the accompanying drawings.

[0023] like Figures 1-3 As shown, an energy-saving anti-smoldering gasification flare has 7 sub-flares inside the cylinder. The number of sub-flares varies depending on the actual situation, ranging from 2 to 7. The outlet areas of the sub-flares can be the same or different. Assuming the outlet area of ​​a traditional gasification flare is A, the sum of the outlet areas of all sub-flares in this embodiment is less than A.

[0024] When the number of sub-torches is 2 to 6, the arrangement method is as follows: Figure 4 Each sub-flare pipeline is equipped with a check valve. For ease of maintenance, the check valve can also be installed on the ground pipeline.

[0025] Each check valve opens at a different pressure, and P1 < P2 < P3 < P4 < P5 < P6 < P7 (i.e., P... i (This represents the opening pressure of the check valve on the i-th sub-flare pipeline). When the flare gas discharge is small, the flare gas pressure is also small. When P1 < flare gas pressure < P2, the check valve of the first sub-flare opens, while the other check valves remain closed. This means that the flare gas is only discharged from the outlet of the first sub-flare. Compared to a conventional gasification flare, because the outlet area of ​​the first sub-flare is smaller, the flare gas velocity is greater for the same discharge volume. For example, in this embodiment, the outlet area of ​​the first sub-flare is less than 1 / 7 of that of a conventional gasification flare; therefore, the outlet velocity at low discharge volumes is more than 7 times that of a conventional gasification flare.

[0026] By specifically designing the outlet area of ​​the sub-flare, the flare gas outlet velocity can be ensured to be greater than the critical velocity at which smoldering occurs, thus preventing smoldering of the flare gas inside the flare and reducing the flare head's lifespan. Similarly, when the flare gas discharge continues to increase, making P2 < flare gas pressure < P3, the check valves of the first and second sub-flares open. At this time, the first and second sub-flares operate simultaneously, while the other five sub-flares remain closed. When the flare gas discharge gradually increases again, the remaining five sub-flares start operating sequentially. When the flare gas discharge ends, the flare gas pressure gradually decreases, and the check valves of each sub-flare close sequentially.

[0027] It is worth noting that, in order to facilitate the timely ignition of the flare gas by the permanent lamps, the sub-flares with lower opening pressures should be arranged close to the inner wall of the cylinder 2. For example, in this embodiment, sub-flares 1 to 4 are arranged close to the inner wall of the cylinder 2, and the four permanent lamps are arranged corresponding to these four sub-flares. If the positions of sub-flares 1 and 7 are interchanged, the permanent lamps will not be able to ignite the flare gas in time due to the greater distance.

[0028] Furthermore, since this embodiment uses seven sub-flares, emissions below 14.3% of the maximum flare emission can be handled by the first sub-flare, which accounts for the vast majority of flare emission conditions. Therefore, during normal operation, it is only necessary to keep the constant-burning lamp corresponding to the first sub-flare constantly lit. The other constant-burning lamps are interlocked with the check valves of each sub-flare. When the corresponding check valve opens, the corresponding constant-burning lamp is ignited. At other times, the constant-burning lamps can be kept closed. This significantly reduces the fuel gas consumption of the constant-burning lamps, saves on enterprise operating costs, and reduces carbon emissions.

[0029] The embodiments described above do not constitute a limitation on the scope of protection of this application.

Claims

1. An energy saving anti-dump gasification flare, characterized in that, The flare comprises: a long-lasting lamp (1), a cylinder (2), a plurality of sub-flares (3) and check valves (4); wherein the cylinder (2) wraps the plurality of sub-flares (3), each sub-flare is provided with a check valve (4) on the corresponding pipeline; the long-lasting lamp (1) is arranged outside the cylinder (2); The opening pressure of any two check valves is different, and the corresponding number of check valves is opened according to the size of the flare gas discharge flow.

2. The torch of claim 1, wherein, The number of the sub-flares (3) ranges from 2 to 7; the sub-flares include two types, i.e. edge sub-flares and center sub-flares; wherein the edge sub-flares are close to the inner wall of the cylinder (2); the center sub-flares are arranged at the center of the edge sub-flares and are not in contact with the inner wall of the cylinder (2).

3. The torch of claim 2, wherein, The cylinder wall of the center sub-flare is cylindrical; The cylinder wall of the edge sub-flare is a reducer; the cylinder diameter of the upper part of the edge sub-flare is larger than that of the lower part, the middle part is a transition slope, and the shape of the contact part with the cylinder (2) is consistent with that of the cylinder (2); the height of the transition slope ranges from 0.2H to 0.3H, H is the height of the flare head, and the slope angle Φ is 100º to 110º.

4. The torch of claim 3, wherein, When the number of the sub-flares (3) is less than or equal to 4, the sub-flares (3) only include edge sub-flares; when the number of the sub-flares (3) is greater than 4, the sub-flares (3) include edge sub-flares and center sub-flares, and there is only one center sub-flare.

5. The torch of claim 4, wherein, The opening pressure of the check valve corresponding to the i-th sub torch is P i P1 P2 Pn 6. The torch of claim 1, wherein, The outlet area of the sub-flares (3) includes two forms: the outlet areas are equal, or the outlet areas of the sub-flares have multiple values.

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