Efficient flue gas denitration device

Abstract

The utility model provides an efficient flue gas denitration device which comprises a reaction box, an inlet pipe is arranged at one end of the reaction box, an outlet pipe is arranged at the other end of the reaction box, a filter screen is arranged in the reaction box, a placing assembly is arranged above the filter screen in the reaction box, a moving assembly is arranged on the placing assembly, and a cleaning and discharging mechanism is arranged on the moving assembly. A plugging mechanism is arranged at one end of the reaction box close to the outlet pipe. According to the device, inactivated catalysts on the catalyst placing net can be automatically cleaned and pushed out at regular intervals, new catalysts can be automatically added, then the catalysts are flatly laid on the catalyst placing net, the flue gas denitration effect is ensured, operation is more convenient and simpler, meanwhile, the device can be closed in use in cooperation with a plugging mechanism, and the device is convenient to operate. The flue gas is prevented from being discharged from the empty groove to influence the treatment effect, and the flue gas treatment device is opened when the catalyst is discharged, so that the old catalyst is conveniently discharged from the empty groove and is conveniently collected and treated.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas denitration, in particular to a high-efficiency flue gas denitration device. Background Art

[0002] There are two main types of flue gas denitrification technologies: dry method (selective catalytic reduction flue gas denitrification, selective non-catalytic reduction denitrification) and wet method. Compared with wet flue gas denitrification technology, the main advantages of dry flue gas denitrification technology are: low basic investment, simple equipment and process, high efficiency of removing NOX, no wastewater and waste treatment, and not easy to cause secondary pollution.

[0003] However, the existing flue gas denitrification devices have certain defects in actual use. The denitrification treatment is carried out by using a catalyst-catalyzed reduction reaction, and the catalyst is located inside the reaction device. After a period of use, the activity of the catalyst decreases until it disappears. It is inconvenient to replace the catalyst, which affects the efficiency of the reaction and leads to incomplete denitrification. Summary of the invention

[0004] In view of the above-mentioned technical problems, the utility model proposes a high-efficiency flue gas denitration device, which is used to solve the problem that the flue gas denitration device in the prior art is inconvenient to replace the catalyst.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A highly efficient flue gas denitrification device comprises a reaction box, one end of the reaction box is provided with an inlet pipe, the other end is provided with an outlet pipe, a filter screen is provided inside the reaction box, a placement component is provided above the filter screen inside the reaction box, a moving component is provided on the placement component, and a cleaning and discharging mechanism is provided on the moving component.

[0007] Furthermore, in order to facilitate contact reaction with flue gas and perform denitration, the placement component includes a mounting frame arranged inside the reaction box, and a catalyst placement net is arranged inside the mounting frame.

[0008] Furthermore, in order to facilitate the movement of the cleaning and discharging mechanism, and to facilitate cleaning and subsequent re-placing of the catalyst, the moving component includes a linear guide device arranged above the reaction box above the mounting frame, a guide slider is slidably provided on the linear guide device, and a moving plate is provided between the two guide sliders.

[0009] Furthermore, in order to facilitate the scraping and cleaning of the old catalyst and the paving of the new catalyst, the cleaning and discharging mechanism includes a second electric push rod equidistantly arranged under the moving plate, a lifting plate is provided at the output end of the second electric push rod, and a scraper is provided under the lifting plate.

[0010] Furthermore, in order to facilitate leveling of the catalyst, a scraper leveling brush is provided under the lifting plate.

[0011] Furthermore, in order to place new catalyst on the catalyst placement net after cleaning and facilitate the subsequent flue gas denitrification, the cleaning and discharging mechanism also includes a storage box arranged on the movable plate, and telescopic pipes are equidistantly arranged under the storage box. The telescopic pipes pass through the lifting plate and extend to the bottom where a discharge pipe is provided. The discharge pipe is located between the scraper and the leveling brush, and a discharge port is opened under the discharge pipe.

[0012] Furthermore, in order to facilitate cleaning of the catalyst, a discharge mechanism is provided at one end of the reaction box close to the discharge pipe.

[0013] Furthermore, in order to facilitate cleaning of the catalyst on the catalyst placement net, the discharge mechanism includes an empty slot opened on the side wall of the reaction box, and the empty slot is arranged close to the catalyst placement net.

[0014] Furthermore, in order to be able to close when in use and open when cleaning the catalyst, first electric push rods are equidistantly arranged at the top of the inner part of the empty slot, and the output ends of the first electric push rods are jointly provided with baffles matching the empty slot.

[0015] Furthermore, in order to facilitate the collection of the catalyst, an inclined material guide plate is connected to the outer side of the empty slot.

[0016] Beneficial effects of the utility model:

[0017] 1. The utility model can automatically clean and push out the inactive catalyst on the catalyst placement net regularly through the mobile component provided in cooperation with the cleaning and discharging mechanism, and can also automatically add new catalyst and then spread it on the catalyst placement net to ensure the effect of flue gas denitrification, which is more convenient and simple to operate. At the same time, the discharging mechanism can be closed when in use to prevent flue gas from being discharged from the empty slot and affecting the treatment effect, and can be opened when the catalyst is discharged, so that the old catalyst can be discharged from the empty slot and the collection and treatment operation can be convenient for it;

[0018] 2. The utility model can filter and adsorb the flue gas first through the filter net and placement component, filter and adsorb the particulate impurities in the flue gas, and facilitate the subsequent denitrification reaction. Then, the catalyst on the placement component is used for reduction reaction to remove the nitrate in the flue gas, avoiding emission to the outside and causing pollution. The flat-laying method of the catalyst is convenient for subsequent cleaning, re-addition, and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is one of the internal structure schematic diagrams of a high-efficiency flue gas denitrification device of the utility model;

[0021] Figure 2 This is the second schematic diagram of the internal structure of a highly efficient flue gas denitrification device of the utility model;

[0022] Figure 3 It is a partial structural schematic diagram of a highly efficient flue gas denitrification device of the utility model;

[0023] Figure 4 It is a partial structural schematic diagram of a moving component and a cleaning and discharging mechanism in a highly efficient flue gas denitrification device of the utility model;

[0024] Figure 5 It is a partial structural schematic diagram of a cleaning and discharging mechanism in a high-efficiency flue gas denitrification device of the utility model.

[0025] In the figure: 1. reaction box; 2. inlet pipe; 3. outlet pipe; 4. filter screen; 5. installation frame; 6. linear guide device; 7. guide plate; 8. baffle; 9. first electric push rod; 10. empty slot; 11. storage box; 12. catalyst placement net; 13. outlet; 14. guide rail slider; 15. moving plate; 16. second electric push rod; 17. lifting plate; 18. scraper; 19. leveling brush; 20. telescopic tube; 21. outlet pipe. DETAILED DESCRIPTION

[0026] 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.

[0027] like Figure 1~Figure 5As shown, an efficient flue gas denitrification device described in Example 1 of the utility model comprises a reaction box 1 for denitrifying the flue gas, one side of which is provided with an inlet pipe 2 for conveniently introducing the flue gas, and the other end is provided with an outlet pipe 3 for discharging the flue gas after denitrification, a filter screen 4 is provided at the bottom end of the reaction box 1, which can conveniently remove and filter the particulate impurities in the flue gas, and a mounting frame 5 for placing components is provided at the top, a catalyst placement net 12 is installed in the mounting frame 5, and a catalyst (a denitrification catalyst, which can be a metal oxide catalyst or other types of catalysts, which is a relatively mature technology and will not be described here) is laid thereon, according to the conditions of catalytic reduction, a heating device can be provided inside the reaction box 1, and the waste heat of the flue gas can also be used for catalytic reaction, which can be arranged according to actual conditions.

[0028] See also Figure 1~Figure 3 In order to ensure the high efficiency of flue gas denitrification and the effect of catalytic reduction, the catalyst is replaced automatically and regularly. The reaction box 1 is located above the mounting frame 5 and a linear guide device 6 of a moving component is installed, on which a guide slider 14 is slidably matched (it can be driven by a linear motor or reciprocating by a reciprocating screw rod, which is a relatively mature technology and will not be described in detail here). Figure 4 As shown. A moving plate 15 is fixedly installed between the two guide rail sliders 14 by screws, and the second electric push rods 16 of the cleaning and discharging mechanism are vertically installed at the four corners of the bottom end of the moving plate 15. The output end (i.e., the bottom end) of the second electric push rod 16 is jointly installed with a lifting plate 17. A scraper 18 and a leveling brush 19 are arranged under the lifting plate 17 in sequence. The scraper 18 can conveniently push and clean the catalyst that has lost its catalytic effect, and the leveling brush 19 at the rear can level the new catalyst that is discharged, so as to facilitate the subsequent denitration reaction with the flue gas. According to the actual situation, the number of components, cleaning and discharging mechanisms and discharging mechanisms can be one group or two groups, etc., which are set according to the actual flue gas situation to ensure the denitration effect.

[0029] See also Figure 1~Figure 5 In order to facilitate the discharge of new catalyst and the cleaning and discharge of old catalyst, a storage box 11 (with catalyst in granular form inside and a feeding pipe for convenient filling at the top) of the cleaning and discharging mechanism is installed on the moving plate 15. Figure 5As shown, three groups of telescopic tubes 20 (which may be corrugated tubes, on which electric control valves are arranged, which can be conveniently controlled to open and close, and thus conveniently discharge new catalyst) are equidistantly installed at the bottom of the storage box 11, and the bottom end thereof passes through the lifting plate 17 and extends to the bottom to be connected with a discharge pipe 21, and the bottom end of the discharge pipe 21 is provided with a discharge port 13 for conveniently discharging the catalyst, and the discharge pipe 21 is located between the scraper 18 and the leveling brush 19, and a hollow groove 10 of a discharge mechanism is provided on the side wall of the reaction box 1, and a baffle 8 is installed inside the hollow groove 10 through a first electric push rod 9, and the baffle 8 is half the height of the hollow groove 10, and a vertical plate adapted to the baffle 8 is also provided inside the hollow groove 10. When the baffle 8 is located at the bottom end of the hollow groove 10, the hollow groove 10 can be sealed in cooperation with the vertical plate, so as not to affect the denitration process. In order to ensure the sealing effect, a sealing strip is bonded to the surrounding side of the baffle 8, and in order to facilitate the discharge of the old catalyst, as shown in FIG. Figure 2 As shown, a guide plate 7 is obliquely installed on the outer side wall of the empty slot 10, and a collecting hopper can be provided at the lower end thereof to facilitate the collection of old catalysts and subsequent processing.

[0030] Working principle: When the utility model is in use, the flue gas is passed into the reaction box 1 through the inlet pipe 2, and the particulate impurities can be filtered through the filter screen 4, and then the flue gas passes through the catalyst placement net 12 to catalytically react with the catalyst above to perform a denitration reaction, and then is discharged through the outlet pipe 3. When the catalyst needs to be replaced after a period of use, the second electric push rod 16 is extended to move the lifting plate 17 downward. At this time, the scraper 18 contacts the catalyst placement net 12, and the linear guide device 6 works to move the guide slider 14 and the moving plate 15, so that the catalyst on the catalyst placement net 12 can be pushed and scraped off, and at the same time, the new catalyst in the storage box 11 is removed. The catalyst is discharged through the discharge port 13 under the telescopic tube 20 and the discharge pipe 21, and is laid on the cleaned catalyst placement net 12. As it continues to move, the leveling brush 19 can level the new catalyst, and the first electric push rod 9 is retracted to move the baffle 8 upward to open the empty slot 10, and then the old catalyst can be pushed out and discharged through the guide plate 7, and then the second electric push rod 16 is retracted to move the whole upward, and then the linear guide device 6 moves the guide slider 14 to reset, which is convenient for the next cleaning operation. When the denitrification reaction is in progress, the first electric push rod 9 is extended to move the baffle 8 downward to block the empty slot 10 to prevent smoke from being discharged from the empty slot 10.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An efficient flue gas denitrification device, comprising a reaction box (1), characterized in that: The reaction box (1) is provided with an inlet pipe (2) at one end and an outlet pipe (3) at the other end; a filter screen (4) is provided inside the reaction box (1); a placement component is provided inside the reaction box (1) above the filter screen (4); a moving component is provided on the placement component; and a cleaning and discharging mechanism is provided on the moving component.

2. The efficient flue gas denitrification device according to claim 1, characterized in that: The placement assembly comprises a mounting frame (5) arranged inside the reaction box (1), and a catalyst placement net (12) is arranged inside the mounting frame (5).

3. The efficient flue gas denitrification device according to claim 2 is characterized in that: The moving assembly comprises a linear guide rail device (6) arranged in the reaction box (1) and located above the mounting frame (5), a guide rail slider (14) being slidably provided on the linear guide rail device (6), and a moving plate (15) being provided between two guide rail sliders (14).

4. The efficient flue gas denitrification device according to claim 3 is characterized in that: The cleaning and discharging mechanism comprises a second electric push rod (16) equidistantly arranged under the moving plate (15), a lifting plate (17) being provided at the output end of the second electric push rod (16), and a scraper (18) being provided under the lifting plate (17).

5. The efficient flue gas denitrification device according to claim 4 is characterized in that: A leveling brush (19) is also provided under the lifting plate (17).

6. The efficient flue gas denitrification device according to claim 5, characterized in that: The cleaning and discharging mechanism further comprises a material storage box (11) arranged on the movable plate (15), telescopic tubes (20) being equidistantly arranged below the material storage box (11), the telescopic tubes (20) penetrating the lifting plate (17) and extending to a discharge tube (21) being arranged below, the discharge tube (21) being located between the scraper (18) and the leveling brush (19), and a discharge port (13) being provided below the discharge tube (21).

7. The efficient flue gas denitrification device according to any one of claims 2 to 6, characterized in that: The reaction box (1) is provided with a discharge mechanism at one end close to the discharge pipe (3).

8. The efficient flue gas denitrification device according to claim 7, characterized in that: The discharge mechanism comprises an empty slot (10) provided on the side wall of the reaction box (1), wherein the empty slot (10) is arranged close to the catalyst placement net (12).

9. The efficient flue gas denitrification device according to claim 8, characterized in that: First electric push rods (9) are equidistantly arranged at the top end of the inner portion of the empty slot (10), and a baffle (8) matching the empty slot (10) is arranged at the output end of the first electric push rod (9).

10. The efficient flue gas denitrification device according to claim 8 or 9, characterized in that: The outer side of the empty slot (10) is connected to a material guide plate (7) which is arranged obliquely.

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