Desulfurization system based on limestone gypsum method

Abstract

The utility model relates to the technical field of desulfurization equipment, and discloses a desulfurization system based on a limestone gypsum method, which structurally comprises a desulfurization tower, an air inlet pipe, a liquid inlet pipe, an exhaust end, a spraying mechanism, a dispersing mechanism and a demisting plate. When doing eccentric motion, the eccentric wheel is in contact with the annular pipe and drives the annular pipe to shake leftwards and rightwards, so that the spraying range of the nozzle is wider, and the contact area between limestone slurry and sulfur-containing gas is increased; limestone slurry is contained by means of an arc-shaped plate on a dispersion mechanism, flows downwards to an open groove under an arc-shaped inclined structure, and flows to a second liquid guide plate under the flow guide action of the open groove; and the sulfur-containing gas is dripped through a plurality of second liquid guide plates to be subjected to desulfurization reaction, so that the desulfurization effect on the sulfur-containing gas is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization equipment, in particular to a desulfurization system based on a limestone gypsum method. Background Art

[0002] When boilers and other institutions are used, tail gas will be generated, and the tail gas will contain a large amount of sulfur. If this part of the sulfur-containing gas is directly discharged into the air, it will cause serious harm to the environment. In order to ensure the sustainable development of the environment, it is usually necessary to use a desulfurization device to desulfurize the sulfur-containing flue gas. Among the desulfurization methods, the limestone-gypsum flue gas desulfurization device is a commonly used desulfurization device. The main advantages of the gypsum method are a wide range of applicable coal types, high desulfurization efficiency, high absorbent utilization rate, high equipment operation rate, and high work reliability;

[0003] Based on the above, the existing limestone gypsum method needs to use a spray device to spray the flue gas when desulfurizing sulfur-containing flue gas. However, most of the existing devices for spraying flue gas are single-layer spray rack settings, resulting in a shorter contact reaction time between the flue gas and the limestone slurry and a smaller contact area, resulting in a reduced desulfurization efficiency for the sulfur-containing flue gas. Utility Model Content

[0004] 1. Technical Problems to be Solved by the Utility Model

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a desulfurization system based on the limestone gypsum method, which has the function of increasing the contact area with the sulfur-containing flue gas and thus increasing the desulfurization effect on the sulfur-containing flue gas.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] The desulfurization system based on the limestone gypsum method includes a desulfurization tower, an air inlet pipe, a liquid inlet pipe and an exhaust port. The lower end of the side of the desulfurization tower is connected to the air inlet pipe, the upper end of the side of the desulfurization tower is connected to the liquid inlet pipe, and the top of the desulfurization tower is provided with an exhaust port for discharging the desulfurized gas.

[0009] As an optimization, the desulfurization tower includes a spray mechanism, a dispersion mechanism and a demister plate. The interior of the desulfurization tower is equipped with a spray mechanism capable of spraying limestone slurry. A plurality of dispersion mechanisms and demister plates are arranged directly below the spray mechanism, and the plurality of dispersion mechanisms and demister plates are arranged alternately in sequence.

[0010] As an optimization, the spray mechanism includes a base plate, a first liquid guide plate, a guide plate, a leakage groove and a spray piece. The bottom annular array of the base plate has several first liquid guide plates, and the outer sides of several first liquid guide plates are connected to the inner wall of the desulfurization tower. A spray piece connected to the liquid inlet pipe is fixedly installed on the top of the base plate, and several guide plates are installed between the spray piece and the base plate, and leakage grooves are opened on both sides of several guide plates.

[0011] As an optimization, an atomizing nozzle is installed at the bottom of the liquid inlet pipe, and the atomizing nozzle is located on the same center line as the desulfurization tower and the spraying member.

[0012] As an optimization, the spraying part includes a mounting block, a connecting pipe, a telescopic support pipe, a ring pipe, a nozzle, a fixed plate, a motor and an eccentric wheel. The mounting block is located on the top of the base plate. A connecting pipe connected to the liquid inlet pipe is provided in the mounting block. The top array of the connecting pipe has a plurality of telescopic support pipes, the tops of the plurality of telescopic support pipes are connected to the ring pipe, the bottom annular array of the ring pipe has a plurality of nozzles, a fixed plate is installed on the mounting block, a motor is installed on the top of the fixed plate, an eccentric wheel is eccentrically connected to the output end of the motor, and the eccentric wheel is in contact with the ring pipe.

[0013] As an optimization, the upper and lower ends of the telescopic support tube are respectively connected to the connecting tube and the ring tube, and the telescopic support tube is a structural tube with telescopic length.

[0014] As an optimization, the dispersion mechanism includes an arc plate, a second liquid guide plate and a groove. The bottom annular array of the arc plate has a plurality of second liquid guide plates, and the plurality of second liquid guide plates are connected to the inner wall of the desulfurization tower. The plurality of second liquid guide plates have grooves on both sides.

[0015] As an optimization, a third liquid guide plate connected to the desulfurization tower is installed at the bottom of the demister plate, and a demister component is installed on the demister plate.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the advantages of the utility model are:

[0018] (1) The utility model is based on the desulfurization system of the limestone gypsum method. The driver drives the motor to operate, and the motor drives the eccentric wheel to make eccentric motion. When the eccentric wheel makes eccentric motion, it will contact with the annular pipe and drive the annular pipe to swing left and right, so that the spraying range of the nozzle can be wider, and the contact area between the limestone slurry and the sulfur-containing gas can be increased, thereby increasing the desulfurization effect and efficiency of the sulfur-containing gas.

[0019] (2) The utility model is based on the desulfurization system of the limestone gypsum method, which receives the limestone slurry through the arc plate on the dispersion mechanism, and flows downward to the groove under the arc inclined structure, and flows to the second liquid guide plate under the guiding effect of the groove, and drips through a number of second liquid guide plates to carry out a desulfurization reaction on the sulfur-containing gas, thereby increasing the desulfurization effect on the sulfur-containing gas.

[0020] (3) The utility model is based on the desulfurization system of the limestone gypsum method. The limestone slurry dropped on the demisting plate will drip from the third liquid guide plate and contact with the sulfur-containing gas. In combination with the dispersion mechanism, the contact time and contact area between the limestone slurry and the sulfur-containing gas can be increased, thereby increasing the desulfurization efficiency.

[0021] (4) The desulfurization system based on the limestone gypsum method of the utility model is connected with the connecting pipe and the ring pipe through the upper and lower ends of the telescopic support pipe respectively, so that the limestone slurry in the liquid inlet pipe can be discharged into the nozzle on the ring pipe under the action of the booster pump and sprayed out through the nozzle, and the telescopic support pipe is a telescopic structure pipe, which can be extended and retracted as the ring pipe is driven by the eccentric wheel to the left and right, ensuring that the ring pipe can maintain a connected state with the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the desulfurization system based on the limestone gypsum method of the utility model;

[0023] Figure 2 It is a schematic diagram of the desulfurization tower of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the spray mechanism of the utility model;

[0025] Figure 4 It is a schematic diagram of the bottom structure of the spray mechanism of the utility model;

[0026] Figure 5 It is a structural schematic diagram of the spraying member of the utility model;

[0027] Figure 6 It is a structural schematic diagram of the dispersion mechanism of the utility model;

[0028] Figure 7 It is a structural schematic diagram of the demister plate of the utility model.

[0029] The reference numerals in the figure are: desulfurization tower-1, air inlet pipe-2, liquid inlet pipe-3, exhaust end-4, spray mechanism-11, dispersion mechanism-12, defogger plate-13, bottom plate-21, first liquid guide plate-22, guide plate-23, leakage groove-24, spray piece-25, atomizing nozzle-26, mounting block-31, connecting pipe-32, telescopic support pipe-33, ring pipe-34, nozzle-35, fixing plate-36, motor-37, eccentric wheel-38, arc plate-41, second liquid guide plate-42, slot-43, third liquid guide plate-51, defogger piece-52. DETAILED DESCRIPTION

[0030] 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.

[0031] Example:

[0032] See also Figure 1-Figure 7 The desulfurization system based on the limestone gypsum method includes a desulfurization tower 1, an air inlet pipe 2, a liquid inlet pipe 3 and an exhaust port 4. The lower end of the side of the desulfurization tower 1 is connected to the air inlet pipe 2, the upper end of the side of the desulfurization tower 1 is connected to the liquid inlet pipe 3, and the top of the desulfurization tower 1 is provided with an exhaust port 4 for discharging the desulfurized gas.

[0033] In this embodiment, the desulfurization tower 1 includes a spray mechanism 11, a dispersion mechanism 12 and a demister plate 13. The desulfurization tower 1 is installed with a spray mechanism 11 capable of spraying limestone slurry. The spray mechanism 11 is connected to the liquid inlet pipe 3. A plurality of dispersion mechanisms 12 and demister plates 13 are arranged directly below the spray mechanism 11. The plurality of dispersion mechanisms 12 and demister plates 13 are arranged alternately in sequence.

[0034] In this embodiment, the spray mechanism 11 includes a bottom plate 21, a first liquid guide plate 22, a guide plate 23, a leakage groove 24 and a spraying member 25. The bottom annular array of the bottom plate 21 has a plurality of first liquid guide plates 22. The outer sides of the plurality of first liquid guide plates 22 are connected to the inner wall of the desulfurization tower 1, which can support and fix the bottom plate 21. A spraying member 25 connected to the liquid inlet pipe 3 is fixedly installed on the top of the bottom plate 21. A plurality of guide plates 23 are installed between the spraying member 25 and the bottom plate 21. The plurality of guide plates 23 can guide and drain the flow of the limestone slurry sprayed on the spraying member 25. Leakage grooves 24 are provided on both sides of the plurality of guide plates 23. The leakage grooves 24 can discharge the limestone slurry after being drained by the guide plate 23 and flow to the first liquid guide plate 22, and then drip through the first liquid guide plate 22 to react and desulfurize the rising gas.

[0035] In this embodiment, an atomizing nozzle 26 is installed at the bottom of the liquid inlet pipe 3, which can atomize and spray the limestone slurry discharged into the liquid inlet pipe 3 by means of the booster pump. The atomizing nozzle 26 is on the same center line as the desulfurization tower 1 and the spraying member 25, so that the sprayed limestone slurry can erupt through the most central position and come into contact with the harmful gas over a sufficiently large area.

[0036] In this embodiment, the spraying member 25 includes a mounting block 31, a connecting pipe 32, a telescopic support pipe 33, an annular pipe 34, a nozzle 35, a fixing plate 36, a motor 37 and an eccentric wheel 38. The mounting block 31 is located at the top of the bottom plate 21. A connecting pipe 32 connected to the liquid inlet pipe 3 is provided in the mounting block 31. The top array of the connecting pipe 32 has a plurality of telescopic support pipes 33. The tops of the plurality of telescopic support pipes 33 are connected to the annular pipe 34. The bottom annular array of the annular pipe 34 has a plurality of nozzles 35 capable of spraying limestone slurry. A fixing plate 36 is installed on the mounting block 31. A motor 37 is installed on the top of the fixing plate 36. An eccentric wheel 38 is eccentrically connected to the output end of the motor 37. The eccentric wheel 38 is in contact with the annular pipe 34. Driven by the motor 37, the eccentric rotation motion is performed to drive the annular pipe 34 to shake to a certain extent.

[0037] In this embodiment, the control method of the utility model is controlled by a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of motor power is also common knowledge in this field. The utility model is mainly used to protect mechanical devices, so the utility model will no longer explain the control method and circuit connection in detail.

[0038] In this embodiment, the upper and lower ends of the telescopic support tube 33 are respectively connected to the connecting tube 32 and the annular tube 34, so that the limestone slurry in the liquid inlet tube 3 can be discharged into the nozzle 35 on the annular tube 34 under the action of the booster pump and sprayed out through the nozzle 35. The telescopic support tube 33 is a telescopic structural tube, which can be extended and retracted as the annular tube 34 swings left and right under the drive of the eccentric wheel 38, ensuring that the annular tube 34 can maintain a connected state with the connecting tube 32.

[0039] In this embodiment, the dispersion mechanism 12 includes an arc plate 41, a second liquid guide plate 42 and a groove 43. The bottom annular array of the arc plate 41 has a plurality of second liquid guide plates 42. The plurality of second liquid guide plates 12 are connected to the inner wall of the desulfurization tower 1. The grooves 43 are provided on both sides of the plurality of second liquid guide plates 42. The arc structure of the arc plate 41 can collect the limestone slurry sprayed by the nozzle 35 and the atomizing nozzle 26, and flow downward to the groove 43 under the arc inclined structure. Under the guiding effect of the groove 43, it will flow to the second liquid guide plate 43 and drip through the plurality of second liquid guide plates 43 to carry out a desulfurization reaction on the harmful gas.

[0040] In this embodiment, a third liquid guide plate 51 connected to the desulfurization tower 1 is installed at the bottom of the demister plate 13, and a demister 52 is installed on the demister plate 13. With the help of the demister 52, when harmful gas containing mist flows through the demister 52 at a certain speed, due to the inertial impact of the gas, the mist collides with the demister 52 and the gathered droplets are large enough that the gravity generated by itself exceeds the combined force of the rising force of the gas and the surface tension of the liquid. The droplets are separated from the surface of the corrugated plate, and the gas undergoing desulfurization can be defogged.

[0041] Working principle: when it is necessary to desulfurize harmful gases, the harmful gases containing sulfur are discharged into the desulfurization tower 1 through the air inlet pipe 2 at the bottom of the desulfurization tower 1, and then the limestone slurry connected at one end is discharged into the connecting pipe 32 through the liquid inlet pipe 3 under the action of the booster pump, and flows into the annular pipe 34 through the telescopic support pipe 33, and the limestone slurry is sprayed out with the help of the nozzle 35 on the annular pipe 34 and the atomizing nozzle 26 at the bottom of the liquid inlet pipe 3, so as to desulfurize the rising sulfur-containing gas. At the same time, the motor 37 is driven by an external driver to operate, and the motor 37 drives the eccentric wheel 38 connected thereto to make an eccentric movement. The eccentric wheel 38 will contact the annular pipe 34 when making an eccentric movement, and drive the annular pipe 34 to swing left and right under the support of the telescopic support pipe 33, so that the spraying range of the nozzle 35 can be wider, and the contact area between the limestone slurry and the sulfur-containing gas can be increased;

[0042] At the same time, as the limestone slurry falls, it will fall on the dispersion mechanism 12 and the defogger plate 13. The limestone slurry will be collected by the arc plate 41 on the dispersion mechanism 12, and will flow downward to the groove 43 under the arc-shaped inclined structure. Under the guiding effect of the groove 43, it will flow to the second liquid guide plate 43, and drip through the second liquid guide plate 43 to desulfurize the harmful gas. The limestone slurry that falls on the defogger plate 13 will drip from the third liquid guide plate 51 and come into contact with the sulfur-containing gas. Under the action of the dispersion mechanism 12 and the defogger plate 13, the desulfurization effect on the sulfur-containing gas will be increased.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] 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 desulfurization system based on a limestone gypsum method, the structure of which comprises a desulfurization tower (1), an air inlet pipe (2) located at the lower end of the side of the desulfurization tower (1), a liquid inlet pipe (3) provided at the upper end of the side of the desulfurization tower (1), and an exhaust port (4) located at the top of the desulfurization tower (1); Features: The desulfurization tower (1) comprises a spray mechanism (11) located inside the desulfurization tower (1) and a plurality of dispersion mechanisms (12) and demister plates (13) arranged directly below the spray mechanism (11). The plurality of dispersion mechanisms (12) and demister plates (13) are arranged alternately in sequence. The spray mechanism (11) is connected to a liquid inlet pipe (3). The spray mechanism (11) comprises a bottom plate (21), a plurality of first liquid guide plates (22) arranged in an array at the bottom of the bottom plate (21), a spray component (25) located at the top of the bottom plate (21), a plurality of guide plates (23) arranged between the spray component (25) and the bottom plate (21), and drain grooves (24) arranged at both sides of the plurality of guide plates (23).

2. The desulfurization system based on the limestone gypsum method according to claim 1, characterized in that: An atomizing nozzle (26) is installed at the bottom of the liquid inlet pipe (3), and the atomizing nozzle (26) is located on the same center line as the desulfurization tower (1) and the spraying member (25).

3. The desulfurization system based on the limestone gypsum process according to claim 1, characterized in that: The spraying member (25) comprises a mounting block (31) located on the bottom plate (21), a connecting pipe (32) arranged in the mounting block (31), a plurality of telescopic support pipes (33) mounted on the top of the connecting pipe (32), an annular pipe (34) located on the top of the plurality of telescopic support pipes (33), nozzles (35) arrayed at the bottom of the annular pipe (34), a fixing plate (36) mounted on the mounting block (31), a motor (37) located on the top of the fixing plate (36), and an eccentric wheel (38) mounted on the output end of the motor (37).

4. The desulfurization system based on the limestone gypsum method according to claim 3 is characterized in that: The upper and lower ends of the telescopic support tube (33) are respectively connected to the connecting tube (32) and the ring tube (34); the telescopic support tube (33) is a structural tube with a telescopic length.

5. The desulfurization system based on the limestone gypsum process according to claim 1, characterized in that: The dispersion mechanism (12) comprises an arc-shaped plate (41), a plurality of second liquid-conducting plates (42) arranged in an array at the bottom of the arc-shaped plate (41), and slots (43) arranged on both sides of the plurality of second liquid-conducting plates (42).

6. The desulfurization system based on the limestone gypsum process according to claim 1, characterized in that: A third liquid guide plate (51) connected to the desulfurization tower (1) is installed at the bottom of the demister plate (13), and a demister component (52) is installed on the demister plate (13).

7. The desulfurization system based on the limestone gypsum process according to claim 1, characterized in that: The outer sides of the plurality of first liquid guide plates (22) are connected to the inner wall of the desulfurization tower (1), and can support and fix the bottom plate (21).

8. The desulfurization system based on the limestone gypsum process according to claim 3, characterized in that: The eccentric wheel (38) is in contact with the annular tube (34).

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