Low-temperature furnace waste gas denitration equipment

By designing a low-temperature furnace exhaust gas denitrification device, the device utilizes the shell and limiting plate structure to extend the exhaust gas contact time. Combined with a sealing cover and a quick filter replacement mechanism, it solves the problem of high nitrate content in the exhaust gas of low-temperature combustion boilers, improves denitrification efficiency, and protects the health of workers.

CN224100374UActive Publication Date: 2026-04-10江苏巨航环保设备制造有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-20
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

The exhaust gas produced by low-temperature combustion boilers contains high levels of nitrates, leading to environmental pollution. Existing equipment has a fast flue gas rise rate, resulting in insufficient contact and reaction between the absorbent liquid and the flue gas, and low denitrification efficiency.

Method used

A low-temperature furnace exhaust gas denitrification device was designed, which adopts a combination structure of shell, exhaust pipe, inlet pipe, connecting pipe, limiting plate and through hole to make the exhaust gas rise slowly and increase the contact time; a sealing cover is used to prevent the ammonia odor from escaping; and the filter element can be quickly disassembled through baffle and fixing mechanism.

Benefits of technology

It increases the contact time between exhaust gas and ammonia water, enhances denitrification efficiency, protects the health of workers, simplifies the filter replacement process, and reduces workload.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of waste gas treatment, and discloses low-temperature furnace waste gas denitration equipment which comprises a shell, a liquid adding pipe is fixedly connected to the outer wall of a top plate of the shell and communicated with the shell, a water outlet pipe is fixedly connected to the outer wall of the bottom of the shell and communicated with the shell, and a water outlet pipe is fixedly connected to the outer wall of the top plate of the shell and communicated with the shell. And the outer wall of the top of the shell is fixedly connected with an air outlet pipe, the air outlet pipe communicates with the shell, the inner wall of the shell is fixedly connected with a plurality of limiting plates, and the multiple limiting plates are obliquely arranged. According to the device, the shell, the gas outlet pipe, the gas inlet pipe, the connecting pipe, the through hole, the limiting plate and the through groove are matched for use, so that waste gas slowly rises in ammonia water in the shell, the contact time is greatly prolonged, the cover plate is rotated anticlockwise, the threaded rod is in threaded connection with the liquid adding pipe, and the liquid adding effect is greatly improved. Therefore, the sealing of the odor in the ammonia water container is realized, and the pungent odor of the ammonia water in the shell is prevented from diffusing into the air.
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Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas treatment technical field more particularly to a kind of low-temperature furnace waste gas denitrification equipment. BACKGROUND

[0002] At present, low-temperature combustion boiler is widely used in power generation, thermal and other industries. However, the waste gas produced in the process of low-temperature combustion has high content of nitrate, which is one of the main problems causing environmental pollution.

[0003] According to the search, the patent with the publication number CN220589328U discloses an industrial waste gas desulfurization and denitrification equipment, which comprises a reaction tower, and a connecting pipe is fixedly connected to the bottom of the reaction tower. The scraper can scrape off the sludge deposited at the bottom of the purification water tank, so that the sludge is prevented from adhering to the bottom of the purification water tank, and the pollution discharge effect of the purification water tank is improved. However, there are still the following defects: the flue gas rises at a high speed, which makes it difficult for the absorption liquid to fully and completely react with the flue gas, thereby reducing the denitrification efficiency. SUMMARY

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a kind of low-temperature furnace waste gas denitrification equipment to solve the problems existing in the above-mentioned background art.

[0005] The utility model provides the following technical scheme: a kind of low-temperature furnace waste gas denitrification equipment, including shell, the top plate outer wall of shell is fixedly connected with liquid feeding pipe, and liquid feeding pipe is communicated with shell, the bottom outer wall of shell is fixedly connected with water outlet pipe, and water outlet pipe is communicated with shell, the top outer wall of shell is fixedly connected with gas outlet pipe, and gas outlet pipe is communicated with shell, the inner wall of shell is fixedly connected with multiple limit plates, and multiple limit plates are placed obliquely, one end of multiple limit plates is all set with through slot, the top outer wall of shell is fixedly connected with inlet pipe, and shell is communicated with inlet pipe, one end of inlet pipe is all passed through shell and multiple limit plates and is fixedly connected with connecting pipe, multiple through holes are formed in the top of connecting pipe.

[0006] As a further scheme of the utility model, the top of the liquid feeding pipe is fixedly connected with a funnel, and the funnel is communicated with the liquid feeding pipe.

[0007] As a further scheme of the utility model, a cover plate is arranged in the funnel, and the cover plate is a circular truncated cone body. A threaded rod is fixedly connected to the bottom of the cover plate, and the threaded rod is threadedly connected with the liquid feeding pipe.

[0008] As a further scheme of the utility model, a sealing ring is fixedly connected to the circumferential outer side of the cover plate, and the sealing ring is in contact with the funnel.

[0009] As a further scheme of the utility model, the side of the air outlet pipe is provided with a notch, a baffle is arranged in the notch, two limiting rings are fixedly connected to the side of the baffle, a filter element is arranged between the two limiting rings, and a fixing mechanism for limiting the baffle is arranged on the side of the air outlet pipe.

[0010] As a further scheme of the utility model, the fixing mechanism is two second protruding blocks, the two second protruding blocks are fixed on the circumferential outer wall of the air outlet pipe through bolts, a clamping block is rotatably connected to the side of each of the two second protruding blocks, two first protruding blocks are fixedly connected to the circumferential outer side of the baffle, clamping grooves are formed in the top of the two first protruding blocks, and the clamping grooves are clamped with the clamping blocks.

[0011] As a further scheme of the utility model, the two clamping blocks are magnets.

[0012] As a further scheme of the utility model, two inclined surfaces are formed in the inner wall of the bottom of the shell, and the two inclined surfaces are symmetrically formed.

[0013] The utility model discloses a technical effect and advantage:

[0014] 1. The utility model discloses a shell, air outlet pipe, inlet pipe, connecting pipe, through -hole, limiting board, the cooperation of through -groove, thereby making the slow rising of waste gas in the ammonia water in the shell, thereby greatly increase the contact time, and further greatly increase the denitration efficiency.

[0015] 2. The utility model discloses the anticlockwise rotation of the cover plate, makes the threaded rod and liquid adding pipe threaded connection, thereby realizes the sealing of the smell in the ammonia water container, avoids the ammonia water in the shell and emits the irritating smell to the air, effectively protects the health of staff.

[0016] 3. The utility model discloses the cooperation of baffle, fixing mechanism, limiting ring, thereby realizes the quick disassembly of filter element, greatly facilitates the staff replacement filter element, and greatly reduces the working strength of staff, and the operation is convenient and quick. DRAWINGS

[0017] Fig. 1 It is the three -dimensional structure schematic diagram of the utility model.

[0018] Fig. 2 It is the inlet pipe cross section structure schematic diagram of the utility model.

[0019] Fig. 3 It is the shell cross section structure schematic diagram of the utility model.

[0020] The reference signs are: 1, air outlet pipe; 2, funnel; 3, liquid adding pipe; 4, air inlet pipe; 5, shell; 6, baffle; 7, first protrusion; 8, second protrusion; 9, clamping groove; 10, clamping block; 11, limiting ring; 12, filter element; 13, cover plate; 14, sealing ring; 15, threaded rod; 16, limiting plate; 17, through slot; 18, through hole; 19, connecting pipe; 20, water outlet pipe. DETAILED DESCRIPTION

[0021] The technical solutions in the utility model will be clearly and completely described below with reference to the drawings in the utility model, and the forms of the structures described in the following embodiments are only examples, and the utility model is not limited to the structures described in the following embodiments, and all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] Reference Figs. 1-3 The utility model provides a kind of low-temperature furnace waste gas denitrification equipment, including shell 5, the bottom inner wall of shell 5 is equipped with two inclines, and two inclines are symmetrically equipped, ammonia water in shell 5 is conveniently discharged by incline, the top outer wall of shell 5 is welded with liquid adding pipe 3, and liquid adding pipe 3 is communicated with shell 5, the top of liquid adding pipe 3 is fixed with funnel 2 by bolt, funnel 2 is equipped with cover plate 13, the circumferential outside of cover plate 13 is bonded with sealing ring 14, and sealing ring 14 is in contact with funnel 2, the sealing between cover plate 13 and funnel 2 is greatly increased by sealing ring 14, and cover plate 13 is circular truncated cone body, the bottom of cover plate 13 is fixed with threaded rod 15 by bolt, and threaded rod 15 is threadedly connected with liquid adding pipe 3, by counterclockwise rotating cover plate 13, make threaded rod 15 and liquid adding pipe 3 threadedly connected, avoid ammonia water in shell 5 pungent smell to be emitted to air, affect the health of staff, and funnel 2 is communicated with liquid adding pipe 3, ammonia water is conveniently added into shell 5 by funnel 2, the bottom outer wall of shell 5 is welded with water outlet pipe 20, and water outlet pipe 20 is communicated with shell 5, the top outer wall of shell 5 is welded with air outlet pipe 1, and air outlet pipe 1 is communicated with shell 5, the inner wall of shell 5 is welded with multiple limiting plates 16, and multiple limiting plates 16 are placed obliquely, one end of multiple limiting plates 16 is equipped with through slot 17, the top outer wall of shell 5 is welded with air inlet pipe 4, and shell 5 is communicated with air inlet pipe 4, one end of air inlet pipe 4 is passed through shell 5 and multiple limiting plates 16 and is welded with connecting pipe 19, the top of connecting pipe 19 is equipped with multiple through holes 18, waste gas is entered into connecting pipe 19 by air inlet pipe 4, and is entered into ammonia water in shell 5 from multiple through holes 18 on connecting pipe 19, and the nitre in waste gas is decomposed by ammonia water, and waste gas slowly moves upwards along multiple limiting plates 16, so that the problem that flue gas rising rate is too fast is solved.

[0023] The utility model discloses a side of the air outlet pipe 1 is provided with the notched, is equipped with the baffle 6 in the notched, the baffle 6 one side is fixed with two limit rings 11 through bolt, is equipped with filter core 12 between two limit rings 11, one side of air outlet pipe 1 is equipped with the fixed mechanism that carries out the location of baffle 6, and the fixed mechanism is two second lugs 8, and two second lugs 8 are bolted in the circumference outer wall of air outlet pipe 1, and one side of two second lugs 8 is all rotatably connected with the clamping block 10, and two clamping blocks 10 are all magnets, and the magnetic force of clamping block 10 is absorbed with first lug 7, thereby make clamping block 10 not easy with the card slot 9 and separate, and the circumference outside of baffle 6 is fixed with two first lugs 7 through bolt, and the top of two first lugs 7 is all provided with the card slot 9, and the card slot 9 is connected with clamping block 10, and by rotating two clamping blocks 10, make two clamping blocks 10 all with the card slot 9 and separate, thereby make baffle 6 quick and separate fixed, by rotating fixed mechanism and make baffle 6 separate fixed, then pull baffle 6 outward, baffle 6 drives two limit rings 11 and moves outward, and two limit rings 11 drive filter core 12 and move outward, thereby realized the quick disassembly of filter core 12.

[0024] The utility model discloses a working principle: first clockwise rotation cover plate 13 makes the threaded rod 15 with liquid adding pipe 3 and separates the threaded connection, then with the liquid adding pipe 3 into the casing 5 in ammonia water, then counterclockwise rotation cover plate 13 makes the threaded rod 15 with liquid adding pipe 3 and is threadedly connected, then with the exhaust gas into the connecting pipe 19 in intake pipe 4, and the exhaust gas is in the multiple through -hole 18 on the connecting pipe 19 and enters the ammonia water in the casing 5, and the nitre in the exhaust gas is decomposed through the ammonia water, and the exhaust gas slowly moves up along the multiple limit board 16, and the exhaust gas is discharged through the air outlet pipe 1.

[0025] Finally, it should be pointed out that in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0026] The utility model discloses the drawing of the embodiment of the utility model only relates to the structure of the embodiment of the utility model, and other structures can refer to the usual design, and under the condition of not conflicting, the same embodiment and different embodiments of the utility model can be combined with each other.

Claims

1. A low-temperature furnace exhaust gas denitrification device, comprising a shell (5), characterized in that: A liquid filling pipe (3) is fixedly connected to the outer wall of the top plate of the shell (5), and the liquid filling pipe (3) is connected to the shell (5). A water outlet pipe (20) is fixedly connected to the outer wall of the bottom of the shell (5), and the water outlet pipe (20) is connected to the shell (5). An air outlet pipe (1) is fixedly connected to the outer wall of the top of the shell (5), and the air outlet pipe (1) is connected to the shell (5). Multiple limiting plates (16) are fixedly connected to the inner wall of the shell (5), and the multiple limiting plates (16) are placed at an angle. A through groove (17) is opened at one end of each of the multiple limiting plates (16). An air inlet pipe (4) is fixedly connected to the outer wall of the top of the shell (5), and the shell (5) is connected to the air inlet pipe (4). One end of each air inlet pipe (4) passes through the shell (5) and multiple limiting plates (16) and is fixedly connected to a connecting pipe (19). Multiple through holes (18) are opened at the top of each connecting pipe (19).

2. The low-temperature furnace exhaust gas denitrification equipment according to claim 1, characterized in that: The top of the liquid addition tube (3) is fixedly connected to a funnel (2), and the funnel (2) is connected to the liquid addition tube (3).

3. The low-temperature furnace exhaust gas denitrification equipment according to claim 2, characterized in that: The funnel (2) is provided with a cover plate (13), and the cover plate (13) is a frustum. A threaded rod (15) is fixedly connected to the bottom of the cover plate (13), and the threaded rod (15) is threadedly connected to the liquid adding pipe (3).

4. The low-temperature furnace exhaust gas denitrification equipment according to claim 3, characterized in that: A sealing ring (14) is fixedly connected to the outer circumference of the cover plate (13), and the sealing ring (14) is in contact with the funnel (2).

5. The low-temperature furnace exhaust gas denitrification equipment according to claim 1, characterized in that: A slot is provided on one side of the air outlet pipe (1), and a baffle (6) is provided in the slot. Two limiting rings (11) are fixedly connected to one side of the baffle (6), and a filter element (12) is provided between the two limiting rings (11). A fixing mechanism for limiting the baffle (6) is provided on one side of the air outlet pipe (1).

6. The low-temperature furnace exhaust gas denitrification equipment according to claim 5, characterized in that: The fixing mechanism consists of two second protrusions (8), which are fixed to the outer circumference of the air outlet pipe (1) by bolts. Each of the two second protrusions (8) is rotatably connected to a locking block (10) on one side. Two first protrusions (7) are fixedly connected to the outer circumference of the baffle (6). Each of the two first protrusions (7) has a locking groove (9) on its top, and the locking groove (9) engages with the locking block (10).

7. The low-temperature furnace exhaust gas denitrification equipment according to claim 6, characterized in that: Both of the card blocks (10) are magnets.

8. The low-temperature furnace exhaust gas denitrification equipment according to claim 1, characterized in that: The bottom inner wall of the shell (5) has two inclined surfaces, and the two inclined surfaces are symmetrically arranged.

Citation Information

Patent Citations

  • Industrial waste gas desulfurization and denitrification equipment

    CN220589328U