CN220405254U

CN220405254U - Nitrogen oxide converter

Info

Publication number: CN220405254U
Application number: CN202321410596.3U
Authority: CN
Inventors: 栗志强; 袁秋晓; 景占浩; 吴泽凯; 崔广洋; 王荣光
Original assignee: Zhengzhou Talgreen Energy Technology Co ltd
Current assignee: Zhengzhou Talgreen Energy Technology Co ltd
Priority date: 2023-06-05
Filing date: 2023-06-05
Publication date: 2024-01-30
Anticipated expiration: 2033-06-05

Abstract

The utility model discloses a nitrogen oxide converter, which comprises a box body and a conversion mechanism; the box body comprises: the inside of the box body is provided with a singlechip, the front end of the box body is respectively provided with a display screen and a control button, the input end of the singlechip is electrically connected with an external power supply, the input end of the display screen is electrically connected with the output end of the singlechip, and the output ends of the control buttons are all electrically connected with the input end of the singlechip; the conversion mechanism comprises: it includes mount, communicating pipe, connector, drum, catalyst, bleeder vent, apron and electric heater strip, the mount sets up in the inside of box body, and the inside through-hole department of mount all is provided with communicating pipe, and the outside end of being away from mutually of communicating pipe all is provided with the connector, and the drum has been placed to the inside of mount, and the inside of drum has held the catalyst, and this nitrogen oxide converter can carry out conversion reaction under lower temperature, and reaction condition is lower, is convenient for change the catalyst, and it is more convenient to use.

Description

Nitrogen oxide converter

Technical Field

The utility model relates to the technical field of online monitoring of flue gas, in particular to a nitrogen oxide converter.

Background

CEMS is a device for continuously monitoring the concentration and total emission amount of gaseous pollutants and particulate matters emitted by an atmospheric pollution source and transmitting information to a main department in real time, and is called as a flue gas automatic monitoring system, namely a flue gas emission continuous monitoring system or a flue gas online monitoring system. The equipment in the flue gas on-line monitoring can only measure the content of nitric oxide, requires that nitrogen dioxide must be converted into nitric oxide for measurement, needs to use a nitrogen oxide converter to convert the nitrogen dioxide, and the nitrogen oxide converter adopts pure molybdenum and a special activated carbon as catalysts, heats the catalyst to above 350 ℃, and can convert the nitrogen dioxide into nitric oxide after sample gas passes through the catalysts, but the equipment can convert the nitrogen dioxide to the nitric oxide at the temperature of 350 ℃ or higher, and has higher reaction conditions, when the catalysts are replaced, the shell of the converter is often required to be detached for replacement, and the catalysts are mostly fixed in the converter, so that the catalyst is inconvenient to replace and inconvenient to use.

Disclosure of Invention

The utility model aims to overcome the existing defects, provides the nitrogen oxide converter, can perform conversion reaction at a lower temperature, has lower reaction conditions, is convenient for replacing a catalyst, and can effectively solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the nitrogen oxide converter comprises a box body and a conversion mechanism;

the box body comprises: the inside of the box body is provided with a singlechip, the front end of the box body is respectively provided with a display screen and a control button, the input end of the singlechip is electrically connected with an external power supply, the input end of the display screen is electrically connected with the output end of the singlechip, and the output ends of the control buttons are all electrically connected with the input end of the singlechip;

the conversion mechanism comprises: the novel electric heating device comprises a fixing frame, a communicating pipe, connectors, cylinders, catalysts, ventilation holes, cover plates and electric heating wires, wherein the fixing frame is arranged in the box body, communicating pipes are arranged at through holes in the fixing frame, the connectors are arranged at the outer ends of the communicating pipes which are opposite to each other, the cylinders are arranged in the fixing frame, the catalysts are contained in the cylinders, the ventilation holes are formed in the front end and the rear end of the cylinders, the cover plates are arranged at the upper ends of the fixing frame and are matched with the cylinders, the electric heating wires are arranged at the lower ends of the fixing frame, the input ends of the electric heating wires are electrically connected with the output ends of a singlechip, conversion reaction can be carried out at a lower temperature, reaction conditions are lower, the catalysts are convenient to replace, and the novel electric heating device is more convenient to use.

Further, the conversion mechanism further comprises screws, the screws are respectively arranged at the upper ends of the fixing frames, nuts are connected with the outer cambered surfaces of the screws in a threaded mode, avoidance holes corresponding to the screws are formed in the cover plate, and the nuts and the cover plate are matched and installed to facilitate fixing of the cover plate.

Further, the device also comprises a temperature sensor, wherein the temperature sensor is arranged in a mounting hole in the communicating pipe at the rear side, and the output end of the temperature sensor is electrically connected with the input end of the singlechip, so that the conversion temperature can be controlled conveniently.

Further, the upper end of the box body is hinged with an access door through a hinge, and the access door corresponds to the upper and lower positions of the fixing frame, so that the cover plate can be conveniently taken out.

Further, the inside of mount has offered the seal groove respectively, and the inside of seal groove all is provided with the rubber seal pad, has ensured the sealed effect of apron.

Further, all be provided with the fan in the installation round hole of box body rear side, the ventilation hole has been seted up respectively to the upper end of box body, and the output of singlechip is all connected to the equal electricity of input of fan, can ventilate the heat dissipation in to the box body.

Further, the front end of the box body is symmetrically provided with handles, and the front end of the box body is respectively provided with fixing holes, so that the converter is convenient to use.

Compared with the prior art, the utility model has the beneficial effects that: the nitrogen oxide converter has the following advantages:

1. in flue gas on-line monitoring work, when needing to convert nitrogen dioxide into nitric oxide, make the connector of front side be linked together with outside gas transmission equipment, make the connector of rear side be linked together with outside receiving equipment, make gas get into inside the drum, make the singlechip start to operate through control button, the singlechip makes the electric heating wire start to operate, the electric heating wire heats catalyst and gas, accelerate the reaction between catalyst and the gas, can convert nitrogen dioxide in the gas into nitric oxide through the catalyst, nitric oxide is discharged from the connector of rear side, the catalyst is mostly pure molybdenum and active carbon, add manganese oxide in the catalyst inside, make the catalyst can react with nitrogen dioxide at about hundred ninety degrees centigrade, compare in the conversion environment of three hundred fifty degrees centigrade of conventional high temperature, reaction condition has been significantly reduced, it is more convenient to use.

2. When needing to change the catalyst, open the access door, take down the nut through external tool, can take off the apron, take out the drum and change the catalyst, through setting up seal groove and rubber seal pad, the sealed effect when having ensured the apron installation for can take out the drum through setting up the access door, so that need not disassemble whole box body, be convenient for change the catalyst, the flue gas online monitoring in-process nitrogen dioxide conversion work of being convenient for more uses.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

fig. 3 is an enlarged schematic view of the structure of the present utility model at a.

In the figure: 1 box body, 2 singlechip, 3 display screen, 4 control button, 5 handles, 6 fixed orifices, 7 conversion mechanism, 71 mount, 72 communicating pipe, 73 connector, 74 drum, 75 catalyst, 76 bleeder vent, 77 screw rod, 78 apron, 79 electric heating wire, 8 access door, 9 seal groove, 10 rubber seal pad, 11 fan, 12 ventilation hole, 13 nuts, 14 temperature sensor.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present embodiment provides the following technical solutions: the nitrogen oxide converter comprises a box body 1 and a conversion mechanism 7;

box body 1: the inside of the box body is provided with a singlechip 2, the front end of the box body 1 is respectively provided with a display screen 3 and a control button 4, the input end of the singlechip 2 is electrically connected with an external power supply, the input end of the display screen 3 is electrically connected with the output end of the singlechip 2, the output ends of the control buttons 4 are all electrically connected with the input end of the singlechip 2, the inside of a mounting round hole at the rear side of the box body 1 is provided with a fan 11, the upper end of the box body 1 is respectively provided with a vent hole 12, the input ends of the fan 11 are all electrically connected with the output end of the singlechip 2, the front end of the box body 1 is symmetrically provided with handles 5, and the front end of the box body 1 is respectively provided with a fixing hole 6;

conversion mechanism 7: the device comprises a fixing frame 71, a communicating pipe 72, a connector 73, a cylinder 74, a catalyst 75, an air vent 76, a cover plate 78 and an electric heating wire 79, wherein the fixing frame 71 is arranged in the box body 1, the communicating pipe 72 is arranged at through holes in the fixing frame 71, the connectors 73 are arranged at the opposite outer ends of the communicating pipe 72, the cylinder 74 is arranged in the fixing frame 71, the catalyst 75 is contained in the cylinder 74, the air vent 76 is arranged at the front end and the rear end of the cylinder 74, the cover plate 78 is arranged at the upper end of the fixing frame 71, the cover plate 78 is matched with the cylinder 74, the electric heating wire 79 is arranged at the lower end of the fixing frame 71, the input end of the electric heating wire 79 is electrically connected with the output end of the singlechip 2, the conversion mechanism 7 further comprises screw rods 77, the screw rods 77 are respectively arranged at the upper end of the fixing frame 71, the outer cambered surfaces of the screw rods 77 are respectively connected with nuts 13 in a threaded manner, the inside of the cover plate 78 is provided with avoidance holes corresponding to the screw rods 77, the nut 13 is matched with the cover plate 78 and also comprises a temperature sensor 14, the temperature sensor 14 is arranged in a mounting hole in the communicating pipe 72 at the rear side, the output end of the temperature sensor 14 is electrically connected with the input end of the singlechip 2, the upper end of the box body 1 is hinged with an access door 8 through a hinge, the access door 8 corresponds to the upper and lower positions of the fixed frame 71, the inside of the fixed frame 71 is respectively provided with a sealing groove 9, the inside of the sealing groove 9 is provided with a rubber sealing gasket 10, when the nitrogen dioxide is required to be converted into nitric oxide in the flue gas online monitoring work, the connector 73 at the front side is communicated with external gas transmission equipment, the connector 73 at the rear side is communicated with external receiving equipment, the gas enters the cylinder 74, the singlechip 2 starts to operate through the control button 4, the singlechip 2 starts to operate the electric heating wire 79, the electric heating wire 79 heats catalyst 75 and gas for the reaction between catalyst 75 and the gas, can convert nitrogen dioxide in the gas into nitric oxide through catalyst 75, nitric oxide is discharged from the connector 73 of rear side, catalyst 75 is mostly pure molybdenum and active carbon, add manganese oxide in the inside of catalyst 75, make catalyst 75 can react with nitrogen dioxide under the temperature of about hundred ninety degrees celsius degrees, compare in the conversion environment of conventional high temperature three hundred fifty degrees celsius degrees, reaction condition is obviously reduced, it is more convenient to use, temperature sensor 14 detects the temperature of gas and sends the testing result to singlechip 2, singlechip 2 sends the testing result to display screen 3 and shows it, thereby be convenient for control conversion temperature, when needs change catalyst 75, open access door 8, take down nut 13 through external tool, can take down cover plate 78, take out cylinder 74 and change catalyst 75, seal effect when guaranteeing 78 installation through setting up seal groove 9 and rubber seal pad 10, make the whole box 1 can not be used in the conversion box 1 can be followed by the change the nitrogen to the fan, thereby the fan is convenient for the inside can be changed to the fan is guaranteed to the air vent 11 to the fan, the fan is convenient for use, the inside can be changed to the fan is convenient for take out in the fan is convenient for take out the inside the conversion box 1, the fan is convenient for use, the fan is convenient to take out the fan 11.

The working principle of the nitrogen oxide converter provided by the utility model is as follows: in the flue gas online monitoring work, when the nitrogen dioxide is required to be converted into nitric oxide, the front connector 73 is communicated with external gas transmission equipment, the rear connector 73 is communicated with external receiving equipment, gas enters the cylinder 74, the singlechip 2 starts to operate through the control button 4, the singlechip 2 starts to operate the electric heating wire 79, the electric heating wire 79 heats the catalyst 75 and the gas, the reaction between the catalyst 75 and the gas is quickened, namely, the nitrogen dioxide in the gas can be converted into nitric oxide through the catalyst 75, the nitric oxide is discharged from the rear connector 73, most of the catalyst 75 is pure molybdenum and active carbon, and manganese oxide is added into the catalyst 75, so that the catalyst 75 can react with the nitrogen dioxide at a temperature of about one hundred ninety degrees celsius, compared with the conventional high-temperature three hundred fifty degrees celsius conversion environment, the reaction condition is obviously reduced, the use is more convenient, the temperature sensor 14 detects the temperature of the gas and sends the detection result to the singlechip 2, the singlechip 2 sends the detection result to the display screen 3 to display the detection result, so that the conversion temperature is convenient to control, when the catalyst 75 needs to be replaced, the access door 8 is opened, the nut 13 is removed through an external tool, the cover plate 78 can be removed, the cylinder 74 is taken out to replace the catalyst 75, the sealing effect of the cover plate 78 in installation is ensured by arranging the sealing groove 9 and the rubber sealing gasket 10, the cylinder 74 can be taken out without disassembling the whole box body 1 by arranging the access door 8, the catalyst 75 is convenient to replace, the nitrogen dioxide conversion work in the flue gas online monitoring process is more convenient to use, the inside of the box body 1 can be ventilated and radiated by arranging the vent hole 12 and the fan 11, ensuring the normal use of the converter.

It should be noted that, in the above embodiment, the singlechip 2 may be S7-200, the display screen 3 may be HYW050E, the temperature sensor 14 may be PT100, and the singlechip 2 controls the operation of the display screen 3 and the temperature sensor 14 by methods commonly used in the prior art.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. A nitrogen oxide converter, characterized by: comprises a box body (1) and a conversion mechanism (7);

box body (1): the inside of the box body is provided with a singlechip (2), the front end of the box body (1) is respectively provided with a display screen (3) and a control button (4), the input end of the singlechip (2) is electrically connected with an external power supply, the input end of the display screen (3) is electrically connected with the output end of the singlechip (2), and the output ends of the control buttons (4) are electrically connected with the input end of the singlechip (2);

conversion mechanism (7): the novel catalyst box comprises a fixing frame (71), a communicating pipe (72), connectors (73), a cylinder (74), a catalyst (75), ventilation holes (76), a cover plate (78) and electric heating wires (79), wherein the fixing frame (71) is arranged in the box body (1), the communicating pipe (72) is arranged at the position of the through hole in the fixing frame (71), the connectors (73) are arranged at the outer ends of the communicating pipe (72) opposite to each other, the cylinder (74) is arranged in the fixing frame (71), the catalyst (75) is contained in the cylinder (74), ventilation holes (76) are formed in the front end and the rear end of the cylinder (74), the cover plate (78) is arranged at the upper end of the fixing frame (71) in a matched mode, the electric heating wires (79) are arranged at the lower end of the fixing frame (71), and the input end of the electric heating wires (79) are electrically connected with the output end of a single chip microcomputer (2).

2. The nitrogen oxide converter of claim 1, wherein: the conversion mechanism (7) further comprises a screw (77), the screw (77) is respectively arranged at the upper end of the fixing frame (71), nuts (13) are connected with the outer cambered surface of the screw (77) in a threaded mode, avoidance holes corresponding to the screw (77) are formed in the cover plate (78), and the nuts (13) are installed in a matched mode with the cover plate (78).

3. The nitrogen oxide converter of claim 1, wherein: the temperature sensor (14) is arranged in a mounting hole in the communicating pipe (72) at the rear side, and the output end of the temperature sensor (14) is electrically connected with the input end of the singlechip (2).

4. The nitrogen oxide converter of claim 1, wherein: the upper end of the box body (1) is hinged with an access door (8) through a hinge, and the access door (8) corresponds to the upper and lower positions of the fixing frame (71).

5. The nitrogen oxide converter of claim 1, wherein: a sealing groove (9) is formed in the fixing frame (71), and rubber sealing gaskets (10) are arranged in the sealing groove (9).

6. The nitrogen oxide converter of claim 1, wherein: a fan (11) is arranged in the installation round hole at the rear side of the box body (1), vent holes (12) are respectively formed in the upper end of the box body (1), and the input ends of the fan (11) are electrically connected with the output end of the singlechip (2).

7. The nitrogen oxide converter of claim 1, wherein: the front end of the box body (1) is symmetrically provided with handles (5), and the front end of the box body (1) is respectively provided with fixing holes (6).