Denitration reaction device of desulfurization and denitrification system

Abstract

The utility model discloses a denitration reaction device of a desulfurization and denitration system, which comprises a denitration reaction cylinder, a flue gas pipe and a reducing agent pipe are respectively arranged in mounting holes in the outer cambered surface of the denitration reaction cylinder, and the denitration reaction device further comprises a flow guide mechanism, the flow guide mechanism comprises a horizontal dispersion disc, first-stage mixing flow guide rings and second-stage mixing flow guide rings, the horizontal dispersion disc is arranged at the lower end of the inner arc surface of the denitration reaction cylinder, the flue gas pipe and the reducing agent pipe are both communicated with the horizontal dispersion disc, the first-stage mixing flow guide rings are arranged on the upper surface of the horizontal dispersion disc, and the second-stage mixing flow guide rings are arranged on the lower surface of the horizontal dispersion disc. According to the denitration reaction device of the desulfurization and denitration system, flue gas and a reducing agent are mixed in a small amount and in a large amount in sequence by guiding the flowing tracks of the flue gas and the reducing agent in the denitration reaction device, the amount of gas participating in mixing at a time is reduced, mixing uniformity is guaranteed, and the time required for uniform mixing is shortened; the working efficiency of the denitration reaction device is improved, and the denitration of the desulfurization and denitration system is more thorough.

Description

TECHNICAL FIELD

[0001] The utility model relates to desulfurization and denitration system technical field, concretely is a kind of denitration reaction device of desulfurization and denitration system. BACKGROUND

[0002] Desulfurization and denitration system‌It is an environmental protection technology system for reducing sulfur dioxide and nitrogen oxides emissions generated in the combustion process of fossil fuels such as coal and oil, which removes these harmful substances in flue gas by physical, chemical or biological methods to reduce pollution to the atmospheric environment, in the desulfurization and denitration system, flue gas containing nitrogen oxides and reducing agent are introduced into the denitration reaction device respectively, and the denitration of flue gas is realized by the reaction of flue gas and reducing agent;In the prior art, the authorized publication number CN 219615271 U proposes a denitration reaction device of desulfurization and denitration system, including reaction tank upper through connection gas inlet channel, the reaction tank is rotatably connected with a rotating shaft, the rotating shaft is coaxially fixedly connected with an impeller, when the gas inlet channel is driven impeller rotation in the process of gas inlet and then makes each gas fully mixed, the gas inlet channel includes the first gas inlet through connection with the reaction tank, the first gas inlet is through connection with the second gas inlet, by impeller rotation, accelerate the mixing of gas, the gas is directly mixed, the gas amount participating in mixing is more, and the mixing is not uniform, more time is needed for reaction, which affects the denitration reaction efficiency. SUMMARY

[0003] The utility model solves the technical problem of overcoming the defects of the prior art, provides a denitration reaction device of desulfurization and denitration system, so that the flue gas and the reducing agent are sequentially mixed in small amount and mixed in large amount, the amount of gas participating in mixing is reduced, the uniformity of mixing is ensured, the time required for uniform mixing is reduced, the working efficiency of the denitration reaction device is improved, and the problems in the background art can be effectively solved.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a denitration reaction device of desulfurization and denitration system, including the reaction cylinder of selling, the mounting hole of the outer arc surface of the reaction cylinder of selling is equipped with flue gas pipe and reducing agent pipe respectively, still include guide vane mechanism;

[0005] The guide mechanism comprises a horizontal dispersion disc, a first-stage mixing guide ring and a second-stage mixing guide ring, the horizontal dispersion disc is arranged at the lower end of the inner arc surface of the desulfurization reaction cylinder, the flue gas pipe and the reducing agent pipe are communicated with the horizontal dispersion disc, the upper surface of the horizontal dispersion disc is respectively provided with the first-stage mixing guide ring, the second-stage mixing guide ring is located at the upper side of the first-stage mixing guide ring, the lower surface of the second-stage mixing guide ring is fixedly connected with the upper surface of the vertically adjacent first-stage mixing guide ring, the flow tracks of the flue gas and the reducing agent in the desulfurization reaction device are guided, the flue gas and the reducing agent are sequentially mixed in small amount and mixed in large amount, the amount of gas participating in single mixing is reduced, the uniformity of mixing is ensured, the time required for uniform mixing is reduced, the working efficiency of the desulfurization reaction device is improved, and the denitration of the desulfurization and denitration system is more thorough.

[0006] Further, the guide mechanism further comprises a planar spiral groove, an air outlet hole and an air inlet hole, the planar spiral groove is arranged in the interior of the horizontal dispersion disc, the middle part of the planar spiral groove is provided with the air inlet hole, the flue gas pipe and the reducing agent pipe are respectively communicated with the adjacent air inlet hole, the top wall of the planar spiral groove is provided with the uniformly distributed air outlet hole, and the flue gas and the reducing agent are guided to be uniformly distributed in the horizontal direction.

[0007] Further, the guide mechanism further comprises an exhaust pipe, the exhaust pipe is arranged at the upper end of the desulfurization reaction cylinder, the lower end of the exhaust pipe is communicated with the interior of the second-stage mixing guide ring, the upper end of the inner arc surface of the second-stage mixing guide ring is a tapered arc surface, and the exhaust of the reaction gas is guided.

[0008] Further, the number of the first-stage mixing guide ring is twice the number of the second-stage mixing guide ring, and the flue gas and the reducing agent are mixed in multiple stages.

[0009] Further, the upper surface of the horizontal dispersion disc is rotatably connected with a rotating column, the outer arc surface of the rotating column is respectively provided with a mixing plate one, the mixing plate one is one-to-one corresponding and cooperatively installed with the second-stage mixing guide ring, the lower surface of the mixing plate one is respectively provided with a mixing plate two, the mixing plate two is one-to-one corresponding and cooperatively installed with the first-stage mixing guide ring, and the flue gas and the reducing agent are agitated to accelerate the mixing speed.

[0010] Further, the outer side of the desulfurization reaction cylinder is provided with a single-chip microcomputer, the input end of the single-chip microcomputer is electrically connected with an external power supply, and the starting and stopping of the overall device are controlled.

[0011] Further, the upper end of the rotating column is provided with a worm wheel, a worm is rotatably connected between the left and right inner walls of the rotating groove in the middle part of the exhaust pipe, the worm is meshingly connected with the worm wheel, a motor is arranged in the mounting groove of the upper end of the inner arc surface of the desulfurization reaction cylinder, the output shaft of the motor is fixedly connected with the worm, the input end of the motor is electrically connected with the output end of the single-chip microcomputer, and power is provided for the rotation of the rotating column.

[0012] Further, the middle part of the flue gas pipe and the reducing agent pipe is connected with an electromagnetic pressure valve, the output end of the electromagnetic pressure valve is electrically connected to the input end of the single-chip microcomputer, the gas inlet pressure of the flue gas and the reducing agent is controlled, and the excessively high pressure is avoided to cause excessively high flow speed.

[0013] Compared with the prior art, the desulfurization and denitration system has the following advantages:

[0014] By guiding the flow track of the flue gas and the reducing agent in the denitration reaction device, the flue gas and the reducing agent are sequentially mixed in small amount and mixed in large amount, the amount of the gas participating in the mixing at one time is reduced, the uniformity of the mixing is ensured, the time required for the uniform mixing is reduced, the working efficiency of the denitration reaction device is improved, and the denitration of the desulfurization and denitration system is more thorough. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a structural schematic diagram of the whole device of the utility model;

[0016] Fig. 2 It is a structural schematic diagram of the whole device of the utility model;

[0017] Fig. 3 It is a structural schematic diagram of the whole device of the utility model;

[0018] In the drawing: 1 is a desulfurization reaction cylinder, 2 is a flue gas pipe, 3 is a reducing agent pipe, 4 is a flow guide mechanism, 41 is a horizontal dispersion disc, 42 is a first-stage mixing flow guide ring, 43 is a second-stage mixing flow guide ring, 44 is a planar spiral groove, 45 is an air outlet hole, 46 is an exhaust pipe, 47 is an air inlet hole, 5 is a rotating column, 6 is a mixing plate one, 7 is a mixing plate two, 8 is a worm gear, 9 is a worm, 10 is a motor, 11 is a single-chip microcomputer, and 12 is an electromagnetic pressure valve. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Please refer to Figs. 1-3 The embodiment provides a technical scheme: a denitration reaction device of a desulfurization and denitration system, which comprises a desulfurization reaction cylinder 1, which provides a reaction space for the denitration of the desulfurization and denitration system, and the outer arc surface of the desulfurization reaction cylinder 1 is provided with mounting holes for a flue gas pipe 2 and a reducing agent pipe 3, so that the flue gas and the reducing agent can enter the inside of the desulfurization reaction cylinder 1, and further comprises a flow guide mechanism 4.

[0021] The guide mechanism 4 comprises a horizontal dispersion disc 41, a first-stage mixing guide ring 42 and a second-stage mixing guide ring 43. The horizontal dispersion disc 41 is arranged at the lower end of the inner arc surface of the denitration reaction cylinder 1, and the flue gas pipe 2 and the reducing agent pipe 3 are communicated with the horizontal dispersion disc 41. The upper surface of the horizontal dispersion disc 41 is respectively provided with the first-stage mixing guide ring 42. The second-stage mixing guide ring 43 is located at the upper side of the first-stage mixing guide ring 42. The lower surface of the second-stage mixing guide ring 43 is fixedly connected with the upper surface of the vertically adjacent first-stage mixing guide ring 42. The guide mechanism 4 further comprises a planar spiral groove 44, an air outlet hole 45 and an air inlet hole 47. The planar spiral groove 44 is arranged in the interior of the horizontal dispersion disc 41. The middle part of the planar spiral groove 44 is provided with the air inlet hole 47. The flue gas pipe 2 and the reducing agent pipe 3 are respectively communicated with the adjacent air inlet hole 47. The top wall of the planar spiral groove 44 is provided with the uniformly distributed air outlet hole 45. The guide mechanism 4 further comprises an exhaust pipe 46. The exhaust pipe 46 is arranged at the upper end of the denitration reaction cylinder 1. The lower end of the exhaust pipe 46 is communicated with the interior of the second-stage mixing guide ring 43. The lower end of the exhaust pipe 46 is communicated with the interior of the outermost second-stage mixing guide ring 43. The inner arc surface of the upper end of the second-stage mixing guide ring 43 is a tapered arc surface. The number of the first-stage mixing guide ring 42 is twice the number of the second-stage mixing guide ring 43. In the denitration process, the flue gas and the reducing agent enter the interiors of two planar spiral grooves 44 which are independent of each other through the air inlet hole 47. Under the guidance of the planar spiral groove 44, the flue gas and the reducing agent are uniformly dispersed in the horizontal direction. Finally, the flue gas and the reducing agent are discharged from the air outlet hole 45 and flow upward. Through the contact between the nitrogen oxides in the flue gas and the reducing agent, the oxidation-reduction reaction occurs, the flue gas is denitrated, and in the denitration process, the flue gas and the reducing agent are first separated into multiple parts by the first-stage mixing guide ring 42 and flow in a small space to preliminarily mix the flue gas and the reducing agent. Then, the second-stage mixing guide ring 43 guides the preliminarily mixed air to flow in two large spaces to secondarily mix the flue gas and the reducing agent, gradually mixes the flue gas and the reducing agent, and improves the uniformity of the mixing reaction of the flue gas and the reducing agent. The upper surface of the horizontal dispersion disc 41 is rotationally connected with a rotating column 5. The outer arc surface of the rotating column 5 is provided with a mixing plate one 6. The mixing plate one 6 is correspondingly and cooperatively arranged with the second-stage mixing guide ring 43. The lower surface of the mixing plate one 6 is provided with a mixing plate two 7. The mixing plate two 7 is correspondingly and cooperatively arranged with the first-stage mixing guide ring 42. The rotating column 5 drives the mixing plate one 6 and the mixing plate two 7 to rotate. The mixing plate one 6 is located in the interior of the second-stage mixing guide ring 43. The mixing plate two 7 is located in the interior of the first-stage mixing guide ring 42. The rotation of the mixing plate one 6 and the mixing plate two 7 accelerates the mixing of the flue gas and the reducing agent. The outer side of the denitration reaction cylinder 1 is provided with a single-chip microcomputer 11. The input end of the single-chip microcomputer 11 is electrically connected with an external power supply to control the start and stop of the whole device. The upper end of the rotating column 5 is provided with a worm wheel 8. A worm 9 is rotationally connected between the left and right inner walls of the rotating groove in the middle part of the exhaust pipe 46. The worm 9 is meshingly connected with the worm wheel 8.A motor 10 is arranged in a mounting groove on the inner arc surface of the upper end of the desulfurization and denitration reaction cylinder 1, the output shaft of the motor 10 is fixedly connected with the worm 9, the input end of the motor 10 is electrically connected with the output end of the single-chip microcomputer 11, the motor 10 is started, the output shaft of the motor 10 drives the worm 9 to rotate, through the meshing connection between the worm 9 and the worm gear 8, the rotating column 5 is driven to rotate, the middle parts of the flue gas pipe 2 and the reducing agent pipe 3 are both connected with an electromagnetic pressure valve 12, the output end of the electromagnetic pressure valve 12 is electrically connected with the input end of the single-chip microcomputer 11, the gas inlet pressure of the flue gas and the reducing agent is controlled, so that the flue gas and the reducing agent do not flow too fast in the desulfurization and denitration reaction cylinder 1, and the reaction is not incomplete.

[0022] The working principle of the denitration reaction device of the desulfurization and denitration system is as follows: in the process of the desulfurization and denitration system working, the flue gas enters the inside of the desulfurization and denitration reaction cylinder 1 through the flue gas pipe 2, the reducing agent enters the inside of the desulfurization and denitration reaction cylinder 1 through the reducing agent pipe 3, the flue gas and the reducing agent enter the inside of two independent plane spiral grooves 44 through the gas inlet holes 47 respectively, under the guidance of the plane spiral grooves 44, the flue gas and the reducing agent are uniformly dispersed in the horizontal direction, and finally flow upwards from the gas outlet holes 45, through the contact between the nitrogen oxides in the flue gas and the reducing agent, oxidation-reduction reaction occurs, the flue gas is denitrated, in the denitration process, the motor 10 is started through the single-chip microcomputer 11, the output shaft of the motor 10 drives the worm 9 to rotate, through the meshing connection between the worm 9 and the worm gear 8, the rotating column 5, the mixing plate one 6 and the mixing plate two 7 are driven to rotate, first, the flue gas and the reducing agent are separated into multiple parts by the first-stage mixing flow guide ring 42 and flow in small spaces, through the rotation of the mixing plate two 7, the flue gas and the reducing agent in each small space are preliminarily mixed, then the air preliminarily mixed is guided by the second-stage mixing flow guide ring 43 to flow in two large spaces respectively, through the rotation of the mixing plate one 6, the flue gas and the reducing agent in each large space are secondarily mixed, the flue gas and the reducing agent are gradually mixed, the uniformity of the mixing reaction of the flue gas and the reducing agent is improved, and finally, under the guidance of the conical arc surface of the second-stage mixing flow guide ring 43, the gas fully reacted is discharged through the exhaust pipe 46.

[0023] It is worth noting that the single-chip microcomputer 11 disclosed in the above embodiment can be an AT89C4051 type single-chip microcomputer, the motor 10 and the electromagnetic pressure valve 12 can be freely configured according to the actual application scene, the motor 10 can be an HC-KFS type servo motor, the electromagnetic pressure valve 12 can be an SRV-04T type electromagnetic pressure regulating valve, and the single-chip microcomputer 11 controls the motor 10 and the electromagnetic pressure valve 12 to work by using the method commonly used in the prior art.

[0024] The above are only embodiments of the present application, and do not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A denitration reaction device of a desulfurization and denitration system, comprising a denitration reaction cylinder (1), wherein a flue gas pipe (2) and a reducing agent pipe (3) are respectively arranged in mounting holes of the outer arc surface of the denitration reaction cylinder (1), characterized in that: It also includes a flow guide mechanism (4); The flow guide mechanism (4) includes a horizontal dispersion disc (41), a first-stage mixing flow guide ring (42) and a second-stage mixing flow guide ring (43). The horizontal dispersion disc (41) is arranged at the lower end of the inner arc surface of the desorption reaction cylinder (1). The flue gas pipe (2) and the reducing agent pipe (3) are both connected with the horizontal dispersion disc (41). The upper surface of the horizontal dispersion disc (41) is respectively provided with the first-stage mixing flow guide ring (42). The second-stage mixing flow guide ring (43) is located on the upper side of the first-stage mixing flow guide ring (42). The lower surface of the second-stage mixing flow guide ring (43) is fixedly connected with the upper surface of the vertically adjacent first-stage mixing flow guide ring (42).

2. The denitration reaction device of a desulfurization and denitration system according to claim 1, characterized in that: The flow guide mechanism (4) further includes a planar spiral groove (44), an air outlet hole (45) and an air inlet hole (47). The planar spiral groove (44) is arranged in the interior of the horizontal dispersion disc (41). The middle part of the planar spiral groove (44) is provided with the air inlet hole (47). The flue gas pipe (2) and the reducing agent pipe (3) are respectively connected with the adjacent air inlet hole (47). The top wall of the planar spiral groove (44) is provided with the uniformly distributed air outlet hole (45).

3. The denitration reaction device of the desulfurization and denitration system according to claim 1, characterized in that: The flow guide mechanism (4) further includes an exhaust pipe (46). The exhaust pipe (46) is arranged at the upper end of the desorption reaction cylinder (1). The lower end of the exhaust pipe (46) is connected with the interior of the second-stage mixing flow guide ring (43). The inner arc surface of the upper end of the second-stage mixing flow guide ring (43) is a tapered arc surface.

4. The denitration reaction device of a desulfurization and denitration system according to claim 1, characterized in that: The number of the first-stage mixing flow guide ring (42) is twice the number of the second-stage mixing flow guide ring (43).

5. The denitration reaction device of the desulfurization and denitration system according to claim 1, characterized in that: The upper surface of the horizontal dispersion disc (41) is rotatably connected with a rotating column (5). The outer arc surface of the rotating column (5) is provided with a mixing plate one (6). The mixing plate one (6) is one-to-one corresponding and cooperatively installed with the second-stage mixing flow guide ring (43). The lower surface of the mixing plate one (6) is provided with a mixing plate two (7). The mixing plate two (7) is one-to-one corresponding and cooperatively installed with the first-stage mixing flow guide ring (42).

6. The denitration reaction device of a desulfurization and denitration system according to claim 5, characterized in that: The outer side of the desorption reaction cylinder (1) is provided with a single-chip microcomputer (11). The input end of the single-chip microcomputer (11) is electrically connected with an external power supply.

7. The denitration reaction device of a desulfurization and denitration system according to claim 6, characterized in that: The upper end of the rotating column (5) is provided with a worm wheel (8). The worm gear (9) is rotatably connected between the left and right inner walls of the rotating groove in the middle part of the exhaust pipe (46). The worm gear (9) is meshingly connected with the worm wheel (8). The mounting groove in the upper end of the inner arc surface of the desorption reaction cylinder (1) is provided with a motor (10). The output shaft of the motor (10) is fixedly connected with the worm gear (9). The input end of the motor (10) is electrically connected with the output end of the single-chip microcomputer (11).

8. The denitration reaction device of the desulfurization and denitration system according to claim 6, characterized in that: The middle part of the flue gas pipe (2) and the reducing agent pipe (3) is connected with an electromagnetic pressure valve (12). The output end of the electromagnetic pressure valve (12) is electrically connected with the input end of the single-chip microcomputer (11).

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