Low-temperature particle generator

Abstract

The utility model relates to the technical field of waste gas denitration devices, in particular to a low-temperature particle generator which comprises a box body, a smoke inlet and a smoke outlet, the smoke inlet and the smoke outlet are formed in the box body, a catalytic device used for purifying low-temperature smoke is arranged in the box body, and an ammonia water spraying connector is further arranged on the box body. An ammonia water waste liquid outlet is also formed in one side, opposite to the ammonia water spraying joint, of the box body.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas denitration devices, and particularly relates to a low-temperature particle generator. Background Art

[0002] At present, the flue gas generated by industrial boilers or furnace equipment (such as industrial boilers, cement kilns, brick kilns, cracking equipment in coking and petrochemical systems, etc.) is generally denitrified through a selective catalytic reduction technology (SCR) denitration catalyst and a corresponding reactor. The optimal reaction temperature of the catalyst is between 280 and 400 °C. However, the emission temperatures of most kilns are in the range of 110 °C to 160 °C, resulting in most SCR reactors being unable to achieve high denitrification efficiency and having poor use effects. Therefore, some large kilns will choose to electrically heat the flue gas to increase the flue gas temperature, which also causes the overall size of these SCR reactors to be huge, taking up a lot of space and being unsuitable for installation on small-air-volume kilns. Content of the Utility Model

[0003] Therefore, in view of the above problems, the utility model proposes a low-temperature particle generator.

[0004] To achieve the above object, the technical solution of the utility model provides a low-temperature particle generator, which includes a box body, a smoke inlet and a smoke outlet opened on the box body. A catalytic device for purifying low-temperature flue gas is arranged inside the box body. An ammonia water spraying joint is also arranged on the box body, and an ammonia water waste liquid discharge port is arranged on the side of the box body opposite to the ammonia water spraying joint.

[0005] Further improvement is: the catalytic device includes: low-temperature catalyst particles, and a quick-release device arranged inside the box body for placing the low-temperature catalyst particles and facilitating the passage of flue gas.

[0006] Further improvement is: the quick-release device includes: an installation frame arranged inside the box body, and the installation frame is perpendicular to the axial directions of the smoke inlet and the smoke outlet. A plurality of trays are arranged on the installation frame through a clamping device. A plurality of ventilation holes are opened on the trays, and the low-temperature catalyst particles are placed on the trays.

[0007] Further improvement is: a partition plate matching the inside of the box body is also arranged inside the box body. An installation opening is opened on the partition plate, and the installation frame is arranged on the installation opening.

[0008] Further improvement is: a strengthening column is also arranged in the middle of the installation frame, and at least one strengthening plate is arranged between the strengthening column and the inside of the box body.

[0009] Further improvements are as follows: The engaging device includes a engaging plate disposed on the peripheral side of the tray for engaging with the mounting frame, and a wire mesh covering the tray. One end of the wire mesh is hinged to one end of the box body and is detachably connected to the mounting frame.

[0010] Further improvements are as follows: The position of the box body corresponding to the catalytic device protrudes outward to increase the contact area between the flue gas and the catalytic device.

[0011] Further improvements are as follows: Mounting plates are also provided on the smoke inlet and the smoke outlet, and mounting holes for facilitating the connection of the flue are provided on the mounting plates.

[0012] The advantages and beneficial effects of the present utility model are as follows:

[0013] The structure is simple and the installation is convenient. Since the box body is internally loaded with a low-temperature catalyst that can react with low-temperature flue gas, the device for heating the flue gas can be eliminated, making the entire generator smaller in volume, facilitating its application in small-air-volume furnaces, installing it at the position of the outlet horn of the dust collector and inside the flue between dust removal and desulfurization, without occupying additional space. Moreover, the generator can utilize the existing ammonia injection reducing agent preparation system, eliminating the need to rebuild the pipeline system, and the transformation is simple. Description of the Drawings

[0014] Figure 1 It is a side view schematic diagram of a low-temperature particle generator of the present utility model;

[0015] Figure 2 It is a front view schematic diagram inside a low-temperature particle generator of the present utility model;

[0016] Figure 3 It is a schematic diagram of a tray of a low-temperature particle generator of the present utility model;

[0017] Figure 4 It is a schematic diagram of a wire mesh of a low-temperature particle generator of the present utility model;

[0018] In the figure: 1. Box body; 2. Smoke inlet; 3. Smoke outlet; 4. Ammonia spraying joint; 5. Ammonia waste liquid discharge port; 6. Mounting frame; 7. Tray; 8. Vent hole; 9. Partition board; 10. Mounting opening; 11. Reinforcing column; 12. Reinforcing plate; 13. Engaging plate; 14. Wire mesh; 15. Mounting plate. Detailed Embodiments

[0019] The following combines the drawings and embodiments to further describe the detailed embodiments of the present utility model. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0020] As Figures 1 - 4As shown in the figure, a low-temperature particle generator includes a box body 1, a smoke inlet 2 and a smoke outlet 3 opened on the box body 1. A catalytic device for purifying low-temperature flue gas is arranged inside the box body 1. An ammonia water spraying joint 4 is also arranged on the box body 1, and an ammonia water waste liquid discharge port 5 is arranged on the side of the box body 1 opposite to the ammonia water spraying joint 4.

[0021] In order to facilitate denitrification of low-temperature flue gas, the catalytic device includes: low-temperature catalyst particles (not shown in the figure), and a quick-release device arranged in the box body 1 for placing low-temperature catalyst particles and facilitating the passage of flue gas. In order to increase the contact area between the low-temperature catalyst and the low-temperature flue gas, the low-temperature catalyst is in granular form.

[0022] The low-temperature catalyst is a prior art. During actual use, the user can select a suitable low-temperature catalyst according to the actual situation.

[0023] In order to facilitate loading and replacing the low-temperature catalyst particles, the quick-release device includes: an installation frame 6 arranged in the box body 1, and the installation frame 6 is perpendicular to the axial directions of the smoke inlet 2 and the smoke outlet 3, and a plurality of trays 7 arranged on the installation frame 6 through a clamping device. A plurality of ventilation holes 8 are opened on the trays 7, and the low-temperature catalyst particles are placed on the trays 7.

[0024] In order to facilitate the production of the trays 7 and simplify the production process of the trays 7, a partition plate 9 matching the inside of the box body 1 is also arranged inside the box body 1. An installation opening 10 is opened on the partition plate 9, and the installation frame 6 is arranged on the installation opening 10.

[0025] In order to enhance the connection strength between the installation frame 6 and the box body 1, a strengthening column 11 is also arranged in the middle of the installation frame 6, and at least one strengthening plate 12 is arranged between the strengthening column 11 and the inside of the box body 1.

[0026] In order to facilitate fixing the trays 7 and preventing the catalyst particles in the trays 7 from falling, the clamping device includes: a clamping plate 13 arranged on the periphery of the trays 7 for clamping with the installation frame 6, and a wire mesh 14 covering the trays 7. One end of the wire mesh 14 is hinged to one end of the box body 1 and is detachably connected to the installation frame 6;

[0027] The wire mesh 14 can be fixed by tying with iron wire after covering, or can be positioned on the installation frame 6 through screws and gaskets.

[0028] In order to improve the denitrification speed, the position of the box body 1 corresponding to the catalytic device protrudes outwards to expand the contact area between the flue gas and the catalytic device.

[0029] To facilitate the installation of the box body 1, mounting plates 15 are further provided on the smoke inlet 2 and the smoke outlet 3, and mounting holes (not shown in the figure) for facilitating the connection of the flue are formed in the mounting plates 15.

[0030] Working principle: During use, the low-temperature catalyst particles are evenly spread on the tray 7, and then the tray 7 is placed on the mounting rack 6. The tray 7 is fixed by the wire mesh 14 to prevent the low-temperature catalyst particles from falling, thus completing the loading of the low-temperature catalyst particles. Subsequently, the generator can be installed on the flue, and then the ammonia injection pipeline is connected to the generator to complete the installation and start using. During use, the flue gas enters the interior of the box body 1, the ammonia water spills from the ammonia water spraying joint 4, the flue gas is denitrified under the action of the low-temperature catalyst, passes through the ventilation holes 8 on the tray 7 after denitrification, and finally is discharged from the smoke outlet 3.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and descriptions only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-temperature particle generator, comprising a box, a smoke inlet and a smoke exhaust port opened on the box, characterized in that: A catalytic device for purifying low-temperature flue gas is arranged inside the box body, an ammonia water spraying joint is also arranged on the box body, and an ammonia water waste liquid discharge port is also arranged on the side of the box body opposite to the ammonia water spraying joint.

2. A low temperature particle generator according to claim 1, characterized in that: The catalytic device comprises: low-temperature catalyst particles, a quick-release device arranged in a box body for placing the low-temperature catalyst particles and facilitating the passage of smoke.

3. A low temperature particle generator according to claim 2, characterized in that: The quick-release device includes: a mounting frame arranged in the box body and perpendicular to the axial direction of the smoke inlet and the smoke exhaust port, a plurality of trays arranged on the mounting frame through a snap-fit ​​device, a plurality of air holes are opened on the tray, and the low-temperature catalyst particles are placed on the tray.

4. A low temperature particle generator according to claim 3, characterized in that: The box body is also provided with an isolation plate matching the interior of the box body, the isolation plate is provided with a mounting opening, and the mounting frame is arranged on the mounting opening.

5. A low temperature particle generator according to claim 3, characterized in that: A reinforcement column is also arranged in the middle of the mounting frame, and at least one reinforcement plate is arranged between the reinforcement column and the interior of the box body.

6. A low temperature particle generator according to claim 3, characterized in that: The clamping device comprises: a clamping plate arranged on the peripheral side of the pallet for clamping with the mounting frame, and a steel wire mesh covering the pallet, wherein one end of the steel wire mesh is hinged to the other end of the box body and is detachably connected to the mounting frame.

7. A low temperature particle generator according to claim 1, characterized in that: The box body protrudes outwards at a position corresponding to the catalytic device to expand the contact area between the flue gas and the catalytic device.

8. A low temperature particle generator according to claim 1, characterized in that: The smoke inlet and the smoke exhaust port are also provided with mounting plates, and the mounting plates are provided with mounting holes for connecting to the flue.

Images