A Venturi structure of a dry desulfurization tower

Abstract

The utility model discloses a Venturi structure of a dry desulfurization tower, comprising a mounting base, a discharge end is arranged above the mounting base, and a Venturi tube body is connected above the discharge end, a connecting pipe is arranged in the middle of the Venturi tube body, and a feed end is connected to the top of the Venturi tube body; sealing baffles are installed on both sides above the desulfurization tube, and a telescopic push rod is connected to the outer side of the sealing baffle, and a sealing block is arranged on the inner side of the sealing baffle. Compared with the existing device, the Venturi structure of the dry desulfurization tower can drive the sealing baffle to extend and retract horizontally with each other through the telescopic push rod, so as to adjust the relative position with the desulfurization tube, and it is convenient to adjust the opening quantity of the desulfurization tube according to the needs, so as to avoid the boiler flue gas volume far from reaching the rated working condition flue gas volume. At this time, using more desulfurization pipes can easily lead to too small flue gas flow rate after passing through the Venturi, thereby affecting the desulfurization efficiency of the desulfurization reactor.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization, in particular to a dry desulfurization tower Venturi structure. Background Art

[0002] Desulfurization generally refers to the process of removing sulfur from fuel before combustion and before flue gas emission. It is one of the important technical measures to prevent and control air pollution. Dry desulfurization, also known as dry flue gas desulfurization, refers to the use of powdered or granular absorbents, adsorbents or catalysts to remove sulfide-containing gases from flue gas. Dry desulfurization tower is the main equipment for dry desulfurization. In the process of dry desulfurization, a dry desulfurization tower Venturi structure is required.

[0003] The Chinese patent with the authorization publication number CN205627598U discloses a venturi desulfurization tower, including a cylinder shell and an inlet horn, and also including a vertical venturi arranged in the cylinder shell and a horizontal venturi connected to the vertical venturi and passing through the side wall of the cylinder shell, the horizontal venturi is connected to the inlet horn, and atomizing nozzles are arranged in the vertical venturi and the horizontal venturi. When the utility model performs flue gas desulfurization, the flue gas first enters the horizontal venturi for preliminary treatment, and then passes through the vertical venturi for further flue gas desulfurization. The double venturi structure can greatly improve the desulfurization efficiency, reduce the gas-water ratio of the desulfurization tower, reduce water consumption, and reduce the energy consumption of the circulating pump. The equipment has a compact structure, small footprint, and low investment cost; at the same time, it is provided with multi-layer spraying, and the flue gas desulfurization efficiency is higher.

[0004] Although the Venturi structure mentioned above is equipped with multi-layer spraying, the flue gas desulfurization efficiency is higher, but the general Venturi pipe structure does not have an adjustment function. In actual operation, the boiler is operated at low load, and the flue gas volume is far from the rated operating flue gas volume. At this time, using more desulfurization pipes can easily lead to too small flue gas flow rate after passing through the Venturi, thereby affecting the desulfurization efficiency of the desulfurization reactor. For this reason, we propose a dry desulfurization tower Venturi structure. Utility Model Content

[0005] The purpose of the utility model is to provide a Venturi structure for a dry desulfurization tower to solve the problem raised in the above background technology that since the general Venturi pipe structure does not have an adjustment function, in actual operation, the boiler is operated at a low load and the flue gas volume is far from the rated operating condition flue gas volume. At this time, using more desulfurization pipes can easily lead to too small a flue gas flow rate after passing through the Venturi, thereby affecting the desulfurization efficiency of the desulfurization reactor.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a dry desulfurization tower Venturi structure, comprising:

[0007] A mounting base, a discharge end is arranged above the mounting base, a venturi tube body is connected to the discharge end, a connecting pipe is arranged in the middle of the venturi tube body, and a feed end is connected to the top of the venturi tube body;

[0008] The desulfurization pipe is installed inside the connecting pipe. Sealing baffles are installed on both sides above the desulfurization pipe, and the outer side of the sealing baffle is connected to a telescopic push rod. A sealing block is arranged on the inner side of the sealing baffle.

[0009] Preferably, the feed end is also provided with:

[0010] A filter plate is installed inside the feed end head, a hollow mesh surface is installed inside the filter plate, and a sealing rubber ring is connected to the outer wall of the filter plate.

[0011] Preferably, the filter plate and the feed end are engaged with each other, the hollow mesh surface is fixedly connected to the filter plate, and the sealing rubber ring is tightly fitted to the filter plate.

[0012] Preferably, the feed end is interconnected with the discharge end through a venturi tube body and a connecting pipe, the desulfurization pipes are evenly distributed, and the desulfurization pipes are fixedly connected to the connecting pipe.

[0013] Preferably, a telescopic structure is formed between the telescopic push rod and the sealing baffle, and the sealing baffle is symmetrically distributed with respect to the vertical center line of the connecting pipe, and the sealing baffle and the desulfurization pipe are perpendicular to each other.

[0014] Preferably, the filter plate is further provided with:

[0015] The limiting plate is installed on both sides of one end of the filter plate, and the limiting plate is detachably connected to the feed end through bolts.

[0016] Compared with the prior art, the utility model provides a dry desulfurization tower Venturi structure, which has the following beneficial effects:

[0017] The utility model can drive the sealing baffle to extend and retract horizontally through the telescopic push rod, so as to adjust the relative position with the desulfurization pipe, and it is convenient to adjust the exposure quantity of the desulfurization pipe according to the needs, thereby avoiding the problem that the general Venturi pipe structure has no adjustment function. In actual operation, the boiler is operated at low load, and the flue gas volume is far from the rated working condition flue gas volume. At this time, using more desulfurization pipes can easily lead to too small flue gas flow rate after passing through the Venturi, thereby affecting the desulfurization efficiency of the desulfurization reactor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2It is a schematic diagram of the internal structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the filter plate of the utility model;

[0021] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0022] In the figure: 1. Installation base; 2. Discharge end; 3. Connecting pipe; 4. Venturi tube body; 5. Feed end; 6. Filter plate; 7. Sealing rubber ring; 8. Limiting plate; 9. Hollow mesh surface; 10. Desulfurization pipe; 11. Sealing baffle; 12. Sealing block; 13. Telescopic push rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-3 A dry desulfurization tower Venturi structure includes: a mounting base 1, a discharge terminal 2 is arranged above the mounting base 1, and a Venturi tube body 4 is connected to the discharge terminal 2, a connecting pipe 3 is arranged in the middle of the Venturi tube body 4, and a feed terminal 5 is connected to the top of the Venturi tube body 4; a filter plate 6 is installed inside the feed terminal 5, a hollow mesh surface 9 is installed inside the filter plate 6, and a sealing rubber ring 7 is connected to the outer wall of the filter plate 6; the filter plate 6 and the feed terminal 5 are mutually engaged, and the hollow mesh surface 9 is fixedly connected to the filter plate 6, and the sealing rubber ring 7 is tightly fitted to the filter plate 6; the hollow mesh surface 9 inside the filter plate 6 can filter the flue gas passing through the feed terminal 5, so as to remove solid particles in the flue gas, and the sealing rubber ring 7 can improve the relative tightness between the filter plate 6 and the feed end 5, thereby avoiding leakage of flue gas; the feed end 5 is interconnected with the discharge end 2 through the Venturi tube body 4 and the connecting pipe 3, and the desulfurization pipe 10 is evenly distributed, and the desulfurization pipe 10 is fixedly connected to the connecting pipe 3; the flue gas entering from the feed end 5 can be transported to the discharge end 2 through the Venturi tube body 4 and the connecting pipe 3, and a desulfurization agent is arranged in the desulfurization pipe 10, and the flue gas can be filtered and desulfurized in the pipeline; a limit plate 8 is installed on both sides of one end of the filter plate 6, and the limit plate 8 is detachably connected to the feed end 5 by bolts; the limit plate 8 can limit the filter plate 6, and can also facilitate regular disassembly of the filter plate 6 and cleaning of the hollow mesh surface 9.

[0025] See also Figure 1 , 3 And 4, a dry desulfurization tower Venturi structure, including: a desulfurization pipe 10, which is installed inside the connecting pipe 3, and sealing baffles 11 are installed on both sides above the desulfurization pipe 10, and a telescopic push rod 13 is connected to the outer side of the sealing baffle 11, and a sealing block 12 is arranged on the inner side of the sealing baffle 11; a telescopic structure is formed between the telescopic push rod 13 and the sealing baffle 11, and the sealing baffle 11 is symmetrically distributed about the vertical center line of the connecting pipe 3, and the sealing baffle 11 and the desulfurization pipe 10 are perpendicular to each other; the telescopic push rod 13 can drive the sealing baffle 11 to expand and contract horizontally, so as to adjust the relative position with the desulfurization pipe 10, so as to facilitate the adjustment of the opening quantity of the desulfurization pipe 10 as needed, so as to improve the utilization efficiency of the desulfurizer in the desulfurization pipe 10.

[0026] Working principle: When using the Venturi structure of the dry desulfurization tower, first connect the feed end 5 to the exhaust pipe. When the exhaust gas enters the Venturi tube body 4, the flue gas passing through the feed end 5 is filtered by the hollow mesh surface 9 inside the filter plate 6, so that the solid particles in the flue gas can be removed. At the same time, the sealing rubber ring 7 can improve the relative tightness between the filter plate 6 and the feed end 5, so as to avoid the leakage of the flue gas; secondly, the flue gas is transported to the discharge end 2 through the Venturi tube body 4 and the connecting pipe 3. The desulfurization pipe 10 is provided with a desulfurizer, and the flue gas can be discharged from the pipe. It is enough to filter and desulfurize; then, if the flue gas volume is small, start the telescopic push rod 13, and the telescopic push rod 13 drives the sealing baffle 11 to expand and contract horizontally, so as to adjust the relative position with the desulfurization pipe 10, so as to adjust the number of exposures of the desulfurization pipe 10 as needed, thereby improving the use efficiency of the desulfurizer in the desulfurization pipe 10; finally, regularly disassemble the filter plate 6 and clean the hollow mesh surface 9, remove the bolts, and then remove the limit plate 8, and then take out the filter plate 6. This is the working principle of the Venturi structure of the dry desulfurization tower.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dry desulfurization tower Venturi structure, characterized in that: include: A mounting base (1), a discharge end (2) is arranged above the mounting base (1), a venturi tube body (4) is connected to the discharge end (2), a connecting pipe (3) is arranged in the middle of the venturi tube body (4), and a feed end (5) is connected to the top of the venturi tube body (4); A desulfurization pipe (10) is installed inside the connecting pipe (3), and sealing baffles (11) are installed on both sides above the desulfurization pipe (10), and a telescopic push rod (13) is connected to the outer side of the sealing baffle (11), and a sealing block (12) is arranged on the inner side of the sealing baffle (11).

2. A dry desulfurization tower Venturi structure according to claim 1, characterized in that: The feed end (5) is also provided with: A filter plate (6) is installed inside the feed end head (5), a hollow mesh surface (9) is installed inside the filter plate (6), and a sealing rubber ring (7) is connected to the outer wall of the filter plate (6).

3. A dry desulfurization tower Venturi structure according to claim 2, characterized in that: The filter plate (6) and the feed end head (5) are mutually engaged, the hollow mesh surface (9) is fixedly connected to the filter plate (6), and the sealing rubber ring (7) is tightly fitted to the filter plate (6).

4. The dry desulfurization tower Venturi structure according to claim 1, characterized in that: The feed end (5) is connected to the discharge end (2) via the venturi tube body (4) and the connecting pipe (3), the desulfurization pipes (10) are evenly distributed, and the desulfurization pipes (10) are fixedly connected to the connecting pipe (3).

5. The dry desulfurization tower Venturi structure according to claim 1, characterized in that: A telescopic structure is formed between the telescopic push rod (13) and the sealing baffle (11), and the sealing baffle (11) is symmetrically distributed with respect to the vertical center line of the connecting pipe (3), and the sealing baffle (11) and the desulfurization pipe (10) are perpendicular to each other.

6. A dry desulfurization tower Venturi structure according to claim 2, characterized in that: The filter plate (6) is also provided with: A limit plate (8) is installed on both sides of one end of the filter plate (6), and the limit plate (8) is detachably connected to the feed end head (5) via bolts.

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