Coal-fired power plant denitration equipment with spray guns arranged in layered manner

Abstract

The utility model provides coal-fired power plant denitration equipment with spray guns arranged in a layered mode, and relates to the technical field of denitration equipment, the coal-fired power plant denitration equipment comprises a machine body, an input pipe and an inner sleeve, the machine body is internally provided with a first treatment chamber, a second treatment chamber, a third treatment chamber and a fourth treatment chamber in sequence from left to right, and the input pipe is installed in the first treatment chamber; a first exhaust pipe is connected between the first treatment chamber and the second treatment chamber, a second exhaust pipe is connected between the second treatment chamber and the third treatment chamber, and a third exhaust pipe is connected between the third treatment chamber and the fourth treatment chamber. The device can be conveniently connected with spray gun coal-fired equipment which is arranged in a layered mode for denitration treatment, NO is oxidized into NO2 through O3 by means of an O3 oxidation absorption method, then water is used for absorption, NO is oxidized into NO2 through ClO2 by means of a ClO2 oxidation reduction method, then NO2 is reduced into N2 through Na2SO3 water-soluble black gas feeding liquid, the separation speed is high, separation is more thorough, discharged gas is safer and trustworthy, and the device is more efficient and practical.

Description

Technical Field

[0001] The utility model relates to the technical field of denitration equipment, in particular to denitration equipment for a coal-fired power plant with spray guns arranged in layers. Background Art

[0002] Efficient new technologies and equipment that can simultaneously desulfurize and denitrify are the general trend in flue gas purification technology research at home and abroad. At present, many countries and regions have carried out research and development of simultaneous desulfurization and denitrification technologies for flue gas from thermal power plants, and some have even carried out industrial applications. Due to various reasons, my country is still in the desulfurization stage, but simultaneous desulfurization and denitrification are imperative.

[0003] In the specification of a desulfurization and denitrification equipment dedicated to a power plant in the prior art (Announcement No. CN107281907A), it is mentioned that "the feeding pipe sealing sleeve and the distribution wire pipe are both vertically fixed on the electrolytic reaction box, the emergency stop button and the electrolytic reaction box are clearance-matched, the electrolytic reaction box is vertically fixed in front of the power distribution box, and the distribution wire pipe is electrically connected to the power distribution box; the heat sink slot plates are provided with two and are respectively vertically nested on the left and right sides of the power distribution box, and the fixed welding plates are provided with two and are respectively vertically welded on the left and right sides of the power distribution box". However, the desulfurization and denitrification equipment in the prior art has a slow electrolytic separation speed on the one hand, and on the other hand, the electrolytic separation is incomplete, and it is easy to leave some nitric oxide and nitrogen dioxide, which is not convenient, fast and practical. Utility Model Content

[0004] In order to overcome the defects of the prior art, a coal-fired power plant denitrification equipment with layered spray guns is provided to solve the problems that the electrolytic separation of the desulfurization and denitrification equipment in the prior art is slow on the one hand, and incomplete on the other hand, which easily leaves some nitric oxide and nitrogen dioxide, and is not convenient, fast and practical.

[0005] To achieve the above-mentioned purpose, a coal-fired power plant denitrification equipment with layered spray guns is provided, including a body, an input pipe and an inner sleeve, wherein a first treatment chamber, a second treatment chamber, a third treatment chamber and a fourth treatment chamber are arranged in sequence from left to right inside the body, and an input pipe is installed in the first treatment chamber, and a first exhaust pipe is connected between the first treatment chamber and the second treatment chamber, a first exhaust pump is installed on the left part of the first exhaust pipe, a second exhaust pipe is connected between the second treatment chamber and the third treatment chamber, and a second exhaust pump is installed on the left part of the second exhaust pipe, a third exhaust pipe is connected between the third treatment chamber and the fourth treatment chamber, and a third exhaust pump is installed on the left part of the third exhaust pipe, and an inner sleeve is installed in the upper part of the fourth treatment chamber.

[0006] Furthermore, a plurality of groups of air inlet pipes are arranged on the left side of the first processing chamber, and the upper end of the air inlet pipe is connected with an upper connecting pipe, a plurality of groups of branch pipes are arranged on the air inlet pipe, and an air outlet nozzle is installed on the branch pipe.

[0007] Furthermore, a first ultrasonic water level detector is provided at the inner top of the second treatment chamber, a guide plate is installed at the upper part of the second treatment chamber, and clean water is filled at the lower part of the second treatment chamber. At the same time, a first rotating shaft rotates in the clean water, and the lower end of the first rotating shaft is installed on the first motor. First stirring paddles are provided on both sides of the left and right sides of the first rotating shaft.

[0008] Furthermore, a second ultrasonic water level detector is provided at the inner top of the third treatment chamber, an arc guide plate is installed at the upper part of the third treatment chamber, and a chlorine dioxide oxidant is installed at the lower part of the third treatment chamber, a second rotating shaft is rotatably provided in the chlorine dioxide oxidant, the lower end of the second rotating shaft is installed on a second motor, and second stirring paddles are provided on both sides of the left and right sides of the second rotating shaft.

[0009] Furthermore, a third ultrasonic water level detector is provided on the inner top of the fourth treatment chamber, a sodium sulfate solution is filled in the lower inner part of the fourth treatment chamber, and a third rotating shaft rotates in the sodium sulfate solution, the lower end of the third rotating shaft is installed on the third motor, and third stirring paddles are provided on both sides of the third rotating shaft, and a plurality of air outlet pipes are provided on the upper right side of the fourth treatment chamber.

[0010] Furthermore, a base is provided at the bottom of the body, a control panel is provided at the front side of the body, and a liquid inlet and a liquid outlet are provided at the front sides of the second processing chamber, the third processing chamber and the fourth processing chamber.

[0011] Furthermore, a dehumidifier is installed in the lower part of the inner sleeve, a heat conductive wire is installed in the middle part of the inner sleeve, and a turbo fan is installed in the upper part of the inner sleeve.

[0012] The beneficial effects of the utility model are:

[0013] 1. The first treatment chamber of the present invention is provided to transport ozone oxidation gas into the first treatment chamber through an input pipe, and to oxidize NO into NO2 using O3 oxidation absorption method.

[0014] 2. The utility model utilizes the first exhaust pipe to extract the gas in the first treatment chamber and transport it to clean water for washing and absorbing NO2. The gas emerging from the water can remove water vapor under the guidance of the guide plate and is conveniently transported to the chlorine dioxide oxidant through the second exhaust pipe.

[0015] 3 The utility model utilizes the oxidation-reduction method ClO2 to oxidize NO into NO2, and the reduced gas can also remove moisture through the arc guide plate, and then is transported to the sodium sulfate solution in the fourth treatment chamber through the third exhaust pipe.

[0016] 4. The utility model utilizes NaSO3 water-soluble black gas to reduce NO2 to N, and then dehumidifies and dries the gas in sequence through the dehumidifier and heat-conducting wire in the inner sleeve, so that the discharged gas is safe and dry, which is more convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view schematic diagram of an embodiment of the utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of an input pipe according to an embodiment of the utility model;

[0020] Figure 4 Schematic diagram of the inner sleeve of an embodiment of the utility model.

[0021] In the figure: 1, machine body; 10, base; 11, control panel; 2, first treatment chamber; 20, air inlet pipe; 21, input pipe; 22, upper connecting pipe; 23, branch pipe; 24, air outlet nozzle; 3, second treatment chamber; 30, first ultrasonic water level detector; 31, guide plate; 32, first air extraction pipe; 33, first air extraction pump; 34, clean water; 35, first motor; 36, first rotating shaft; 37, first stirring paddle; 4, third treatment chamber; 40, second ultrasonic water level detector measurement; 41. second air extraction pipe; 42. second air extraction pump; 43. chlorine dioxide oxidant; 44. second motor; 45. second rotating shaft; 46. second stirring paddle; 5. fourth treatment chamber; 50. third ultrasonic water level detection; 51. third air extraction pipe; 52. third air extraction pump; 53. sodium sulfate solution; 54. third motor; 55. third rotating shaft; 56. third stirring paddle; 57. air outlet; 6. inner sleeve; 60. dehumidifier; 61. thermal wire; 62. turbo fan. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model is further described in detail in combination with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. Specific details such as specific system structures and technologies are proposed in order to more thoroughly understand the embodiments of the utility model. The described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. However, it should be clear to those skilled in the art that the utility model can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present disclosure.

[0023] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0024] Figure 1 It is a front view schematic diagram of an embodiment of the utility model, Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model, Figure 3 Schematic diagram of the input pipe of the utility model embodiment and Figure 4 Schematic diagram of the inner sleeve of an embodiment of the utility model.

[0025] Reference Figures 1 to 4 As shown, the utility model provides a denitrification equipment for a coal-fired power plant with a layered arrangement of spray guns, including a body 1, a first treatment chamber 2 and an inner sleeve 6, the interior of the body 1 is provided with a first treatment chamber 2, a second treatment chamber 3, a third treatment chamber 4 and a fourth treatment chamber 5 from left to right, and an input pipe 21 is installed in the first treatment chamber 2, and a first air extraction pipe 32 is connected between the first treatment chamber 2 and the second treatment chamber 3, a first air extraction pump 33 is installed on the left portion of the first air extraction pipe 32, a second air extraction pipe 41 is connected between the second treatment chamber 3 and the third treatment chamber 4, and a second air extraction pump 42 is installed on the left portion of the second air extraction pipe 41, a third air extraction pipe 51 is connected between the third treatment chamber 4 and the fourth treatment chamber 5, and a third air extraction pump 52 is installed on the left portion of the third air extraction pipe 51, and an inner sleeve 6 is installed on the upper portion of the fourth treatment chamber 5.

[0026] In this embodiment, a plurality of air inlet pipes 20 are arranged on the left side of the first processing chamber 2, and the upper end of the air inlet pipe 21 is connected to an upper connecting pipe 22, a plurality of branch pipes 23 are arranged on the air inlet pipe 21, and an air outlet nozzle 24 is installed on the branch pipe 23.

[0027] As a preferred embodiment, the first treatment chamber 2 in the present invention is configured to deliver ozone oxidation gas into the first treatment chamber 2 through an inlet pipe 21, and to oxidize NO into NO2 using O3 by using an O3 oxidation absorption method.

[0028] In this embodiment, a first ultrasonic water level detector 30 is provided at the inner top of the second treatment chamber 3, and a guide plate 31 is installed at the upper part of the second treatment chamber 3, and clean water 34 is installed at the lower part of the second treatment chamber 3. At the same time, a first rotating shaft 36 rotates in the clean water 34, and the lower end of the first rotating shaft 36 is installed on the first motor 35. First stirring paddles 37 are provided on both sides of the left and right sides of the first rotating shaft 36.

[0029] As a preferred embodiment, the utility model utilizes the first exhaust pipe 32 to extract the gas in the first treatment chamber 2 and transport it to the clean water 34 for washing and absorbing NO2. The gas emerging from the water can remove water vapor under the guidance of the guide plate 31, and is conveniently transported to the chlorine dioxide oxidant 43 through the second exhaust pipe 41.

[0030] In this embodiment, a second ultrasonic water level detector 40 is provided at the inner top of the third treatment chamber 4, and an arc guide plate is installed at the upper part of the third treatment chamber 4, and a chlorine dioxide oxidant 43 is installed at the lower part of the third treatment chamber 4, and a second rotating shaft 45 is rotatably provided in the chlorine dioxide oxidant 43, and the lower end of the second rotating shaft 45 is installed on the second motor 44, and second stirring paddles 46 are provided on both sides of the left and right sides of the second rotating shaft 45.

[0031] As a preferred embodiment, the utility model utilizes the oxidation-reduction method ClO2 to oxidize NO into NO2. The reduced gas can also remove moisture through the arc guide plate and then be transported to the sodium sulfate solution 53 in the fourth treatment chamber 5 through the third exhaust pipe 51.

[0032] In this embodiment, a third ultrasonic water level detector 50 is provided at the inner top of the fourth treatment chamber 5, a sodium sulfate solution 53 is installed in the lower part of the fourth treatment chamber 5, and a third rotating shaft 55 is rotatably provided in the sodium sulfate solution 53, and the lower end of the third rotating shaft 55 is installed on the third motor 54, and third stirring paddles 56 are provided on the left and right sides of the third rotating shaft 55, and a plurality of groups of air outlet pipes 57 are provided on the upper right side surface of the fourth treatment chamber 5; a base 10 is provided at the bottom of the body 1, a control panel 11 is provided on the front side of the body 1, and liquid inlet and liquid outlet pipes are provided on the front sides of the second treatment chamber 3, the third treatment chamber 4 and the fourth treatment chamber 5; a dehumidifier 60 is installed at the lower part of the inner sleeve 6, a heat conductive wire 61 is installed in the middle part of the inner sleeve 6, and a turbo fan 62 is installed in the upper part of the inner sleeve 6.

[0033] As a preferred embodiment, the utility model uses Na2SO3 water-soluble black gas to reduce NO2 to N2, and then dehumidifies and dries the gas in sequence through the dehumidifier 60 and the heat conducting wire 61 in the inner sleeve 6, so that the discharged gas is safe and dry, which is more convenient and practical.

[0034] The utility model can effectively solve the problems in the prior art that the electrolytic separation of desulfurization and denitrification equipment is slow on the one hand, and incomplete on the other hand, which easily leaves some nitrogen monoxide and nitrogen dioxide, and is not convenient, fast and practical. The utility model is convenient for connecting the layered spray gun coal-fired equipment to carry out denitrification treatment, firstly using the O3 oxidation absorption method to oxidize NO into NO2 with O3, and then absorbing it with water, and then using the ClO2 oxidation-reduction method to oxidize NO into NO2 with ClO2, and then using Na2SO3 water-soluble black gas liquid to reduce NO2 to N2, the separation speed is fast and more thorough, the exhaust gas is safer and more reliable, and more efficient and practical.

[0035] The above embodiments are used to explain the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims for protection shall be included in the protection scope of the present invention.

Claims

1. A denitration equipment for coal-fired power plants with spray guns arranged in layers, characterized in that: The invention comprises a machine body (1), an input pipe (21) and an inner sleeve (6); a first processing chamber (2), a second processing chamber (3), a third processing chamber (4) and a fourth processing chamber (5) are arranged in sequence from left to right inside the machine body (1); an input pipe (21) is installed in the first processing chamber (2); a first exhaust pipe (32) is connected between the first processing chamber (2) and the second processing chamber (3); a first exhaust pump (33) is installed at the left part of the first exhaust pipe (32); a second exhaust pipe (41) is connected between the second processing chamber (3) and the third processing chamber (4); a second exhaust pump (42) is installed at the left part of the second exhaust pipe (41); a third exhaust pipe (51) is connected between the third processing chamber (4) and the fourth processing chamber (5); a third exhaust pump (52) is installed at the left part of the third exhaust pipe (51); and an inner sleeve (6) is installed at the upper part of the fourth processing chamber (5).

2. The denitration equipment for coal-fired power plants with layered spray guns according to claim 1, characterized in that: A plurality of groups of air inlet pipes (20) are arranged on the left side of the first processing chamber (2), and the upper end of the air inlet pipe (21) is connected to an upper connecting pipe (22), a plurality of groups of branch pipes (23) are arranged on the air inlet pipe (21), and an air outlet nozzle (24) is installed on the branch pipe (23).

3. The denitration equipment for coal-fired power plants with layered spray guns according to claim 1, characterized in that: A first ultrasonic water level detector (30) is arranged at the top of the second treatment chamber (3), a guide plate (31) is installed at the upper part of the second treatment chamber (3), and clean water (34) is installed at the lower part of the second treatment chamber (3). A first rotating shaft (36) is rotatably arranged in the clean water (34), the lower end of the first rotating shaft (36) is installed on a first motor (35), and first stirring paddles (37) are arranged on both left and right sides of the first rotating shaft (36).

4. The denitration equipment for coal-fired power plants with layered spray guns according to claim 1, characterized in that: A second ultrasonic water level detector (40) is arranged at the inner top of the third treatment chamber (4), and an arc-shaped guide plate is installed at the inner upper part of the third treatment chamber (4). A chlorine dioxide oxidant (43) is installed at the inner lower part of the third treatment chamber (4). A second rotating shaft (45) is rotatably arranged in the chlorine dioxide oxidant (43), the lower end of the second rotating shaft (45) is mounted on a second motor (44), and second stirring paddles (46) are arranged on both left and right sides of the second rotating shaft (45).

5. The denitration equipment for coal-fired power plants with layered spray guns according to claim 1, characterized in that: A third ultrasonic water level detector (50) is arranged at the inner top of the fourth treatment chamber (5), a sodium sulfate solution (53) is filled in the lower part of the fourth treatment chamber (5), and a third rotating shaft (55) is rotatably arranged in the sodium sulfate solution (53), the lower end of the third rotating shaft (55) is mounted on a third motor (54), third stirring paddles (56) are arranged on both the left and right sides of the third rotating shaft (55), and a plurality of gas outlet ports (57) are arranged on the upper right side surface of the fourth treatment chamber (5).

6. The denitration equipment for coal-fired power plants with layered spray guns according to claim 1, characterized in that: The bottom of the machine body (1) is provided with a base (10), the front side of the machine body (1) is provided with a control panel (11), and the front sides of the second treatment chamber (3), the third treatment chamber (4) and the fourth treatment chamber (5) are all provided with a liquid inlet and a liquid outlet.

7. The denitration equipment for coal-fired power plants with layered spray guns according to claim 1, characterized in that: A dehumidifier (60) is installed in the lower part of the inner sleeve (6), a heat-conducting wire (61) is installed in the middle part of the inner sleeve (6), and a turbo fan (62) is installed in the upper part of the inner sleeve (6).

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