CN221207387U

CN221207387U - Roasting furnace tail gas treatment device

Info

Publication number: CN221207387U
Application number: CN202323116474.6U
Authority: CN
Inventors: 许文付; 王二军; 张威山; 张永强; 郭宾; 刘彪
Original assignee: Shanxi Yiyuan Hengrui New Material Co ltd
Current assignee: Shanxi Yiyuan Hengrui New Material Co ltd
Priority date: 2023-11-17
Filing date: 2023-11-17
Publication date: 2024-06-25
Anticipated expiration: 2033-11-17

Abstract

The utility model discloses a roasting furnace tail gas treatment device, which comprises a primary filter box, a filter plugboard, a secondary filter box, a guide plate, an extension pipeline, a cooling circulation pipe and an auxiliary sedimentation tank, wherein the filter plugboard is arranged on the primary filter box; the filtering plugboard is vertically inserted into the first-stage filtering box, the first-stage filtering box is communicated with the second-stage filtering box through a steel pipe, a guide plate is fixed on one side, close to the steel pipe, of the second-stage filtering box, ammonia water is injected into the second-stage filtering box, the bottom end of the guide plate is placed in the ammonia water, an extension pipeline is vertically arranged at the top of the second-stage filtering box, a cooling circulating pipe is arranged on the outer wall of the extension pipeline, and the top end of the extension pipeline is connected with the bottom end of the auxiliary sedimentation tank; the utility model has the advantages that: the tail gas of the roasting furnace is filtered by a first-stage filter box to remove tar and dust contained in the tail gas; and then, absorbing harmful gas in the tail gas by ammonia water of the secondary filter box, finally, cooling and refluxing the water vapor by an extension pipeline and a cooling circulating pipe, and finally, discharging the residual gas through an air outlet pipe.

Description

Roasting furnace tail gas treatment device

Technical field:

The utility model relates to the technical field of roasting furnace equipment, in particular to a roasting furnace tail gas treatment device.

The background technology is as follows:

The main components of the tail gas of the open roasting furnace are N2, O2, CO2, water vapor and a small part of pollutants. Contaminants such as NOx, SO, tar, dust, etc.

For the tail gas treatment of small-sized equipment of some open roasting furnaces, the tail gas is generally discharged after simple cooling, and the tail gas discharged from the tail gas treatment device is not cooled in place in many times due to poor cooling efficiency, so that pollutants in the tail gas cannot be completely removed, and the pollutants are discharged to the outside.

The utility model comprises the following steps:

The utility model aims to provide a roasting furnace tail gas treatment device for solving the problems in the background technology.

The utility model is implemented by the following technical scheme:

A roasting furnace tail gas treatment device comprises a primary filter box, a filter plugboard, a secondary filter box, a guide plate, an extension pipeline, a cooling circulation pipe and an auxiliary sedimentation tank; the utility model discloses a filter plate, including the steel pipe, the second grade rose box, the first grade rose box is internal to be vertically inserted and is equipped with the filtration picture peg, the first grade rose box pass through the steel pipe with second grade rose box intercommunication the second grade rose box is close to one side of steel pipe is fixed with the guide plate, the injection has aqueous ammonia in the second grade rose box, in aqueous ammonia was arranged in to the bottom of guide plate, the top of second grade rose box is vertical to be provided with extension pipeline the outer wall of extension pipeline is equipped with the cooling circulation pipe, the top of extension pipeline is connected with the bottom of auxiliary sedimentation tank.

Preferably, one end of the primary filter box is provided with a tail gas input pipe, a valve is arranged on the tail gas input pipe, a sealing door is arranged on the vertical surface of one side of the primary filter box, and a handle is arranged on the sealing door.

Preferably, the filtering plugboard is U-shaped, filtering holes are formed in the surfaces of two symmetrical vertical plates, the two vertical plates are arranged in the primary filtering box, a sealing gasket is fixed at the top of the filtering plugboard, and the sealing gasket is positioned on the upper surface of the outer side of the primary filtering box.

Preferably, the top and the bottom of one side on the secondary filter box are respectively provided with a liquid inlet pipe and a liquid outlet pipe, and valves are arranged on the liquid inlet pipe and the liquid outlet pipe.

Preferably, the ammonia water is not higher than the lowest position of the steel pipe.

Preferably, the lower end and the upper end of the cooling circulation pipe are respectively provided with a liquid inlet and a liquid outlet.

Preferably, an air outlet pipe is arranged on the auxiliary sedimentation tank.

The utility model has the advantages that: the tail gas of the roasting furnace is filtered by a first-stage filter box to remove tar and dust contained in the tail gas; and then, absorbing harmful gas in the tail gas by ammonia water of the secondary filter box, finally, cooling and refluxing the water vapor by an extension pipeline and a cooling circulating pipe, and finally, discharging the residual gas through an air outlet pipe.

Description of the drawings:

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

Fig. 2 is an internal cross-sectional view of fig. 1.

In the figure: 1. 1.1 parts of a first-stage filter box, 1.2 parts of a tail gas input pipe, a sealing door, 2 parts of a filter plugboard, 2.1 parts of a vertical plate, 2.2 parts of a sealing gasket, 3 parts of a second-stage filter box, 3.1 parts of a liquid inlet pipe, 3.2 parts of a liquid discharge pipe, 4 parts of a guide plate, 5 parts of an extension pipe, 6 parts of a cooling circulation pipe, 6.1 parts of a liquid inlet, 6.2 parts of a liquid outlet, 7 parts of an auxiliary sedimentation tank, 7.1 parts of an air outlet pipe.

The specific embodiment is as follows:

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. 1-2, the present utility model provides a technical scheme of a tail gas treatment device for a roasting furnace, which comprises:

The tail gas treatment device of the roasting furnace comprises a first-stage filter box 1, a filter plugboard 2, a second-stage filter box 3, a guide plate 4, an extension pipeline 5, a cooling circulation pipe 6 and an auxiliary sedimentation tank 7; one end of the primary filter tank 1 is provided with a tail gas input pipe 1.1, a valve is arranged on the tail gas input pipe 1.1, a sealing door 1.2 is arranged on one side of the primary filter tank 1 on the vertical surface, a handle is arranged on the sealing door 1.2, and the interior of the primary filter tank 1 can be cleaned by opening the sealing door 1.2.

The filtering plugboard 2 is vertically inserted in the first-stage filtering box 1, the filtering plugboard 2 is U-shaped, filtering holes are formed in the surfaces of two symmetrical vertical plates 2.1, and the two vertical plates 2.1 are arranged in the first-stage filtering box 1 and used for filtering and intercepting tar and dust in the first-stage filtering box 1. The top of the filter plugboard 2 is fixed with a sealing gasket 2.2, and the sealing gasket 2.2 is positioned on the upper surface of the outer side of the first-stage filter box 1 to prevent the non-filtered polluted gas from overflowing from the first-stage filter box 1. The first-stage filter box 1 is communicated with the second-stage filter box 3 through a steel pipe, so that unfiltered polluted gas flows into the second-stage filter box 3 from the first-stage filter box 1 through the steel pipe, a guide plate 4 is fixed on one side, close to the steel pipe, of the second-stage filter box 3, and unfiltered polluted gas enters the second-stage filter box 3 and flows downwards into ammonia water through the guide plate 4; the top and the bottom of second grade rose box 3 one side are provided with feed liquor pipe 3.1 and fluid-discharge tube 3.2 respectively, all are provided with the valve on feed liquor pipe 3.1 and the fluid-discharge tube 3.2, and second grade rose box 3 has the aqueous ammonia through feed liquor pipe 3.1 intussuseption, and the height of aqueous ammonia does not exceed the minimum position of steel pipe. The bottom end of the guide plate 4 is placed in ammonia water, toxic gas is adsorbed through the ammonia water, an extension pipeline 5 is vertically arranged at the top of the secondary filter box 3, a cooling circulating pipe 6 is arranged on the outer wall of the extension pipeline 5, and a liquid inlet 6.1 and a liquid outlet 6.2 are respectively arranged at the lower end and the upper end of the cooling circulating pipe 6; the gas which does not react flows upwards through the extension pipeline 5 and is further cooled through the cooling circulating pipe 6, so that the water vapor is condensed and flows back into the secondary filter tank 3 through gravity, the top end of the extension pipeline 5 is connected with the bottom end of the auxiliary sedimentation tank 7, the auxiliary sedimentation tank 7 is provided with the gas outlet pipe 7.1, and the residual gas flows out from the gas outlet pipe 7.1 and is discharged.

The working principle is as follows: the tail gas of the roasting furnace is filtered by a first-stage filter box 1 to remove tar and dust contained in the tail gas; and then the ammonia water in the secondary filter box 3 is used for adsorbing harmful gases in the tail gas, finally the extension pipeline 5 and the cooling circulation pipe 6 are used for cooling and refluxing the water vapor, and finally the rest gases are discharged through the air outlet pipe 7.1.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a roasting furnace tail gas processing apparatus which characterized in that: comprises a first-stage filter box (1), a filter plugboard (2), a second-stage filter box (3), a guide plate (4), an extension pipeline (5), a cooling circulation pipe (6) and an auxiliary sedimentation tank (7); the utility model discloses a filter plate, including steel pipe, secondary filter tank (3), filtering plugboard (2) is vertically inserted in one-level filter tank (1), one-level filter tank (1) pass through the steel pipe with secondary filter tank (3) intercommunication secondary filter tank (3) is close to one side of steel pipe is fixed with guide plate (4), the injection has aqueous ammonia in secondary filter tank (3), in aqueous ammonia is arranged in to the bottom of guide plate (4), the top of secondary filter tank (3) is vertical to be provided with extension pipeline (5) the outer wall of extension pipeline (5) is equipped with cooling circulation pipe (6), the top of extension pipeline (5) is connected with the bottom of supplementary sedimentation tank (7).

2. A roasting furnace tail gas treatment apparatus as claimed in claim 1, wherein: one end of the first-stage filter box (1) is provided with a tail gas input pipe (1.1), a valve is arranged on the tail gas input pipe (1.1), a sealing door (1.2) is arranged on one side of the first-stage filter box (1) on the vertical surface, and a handle is arranged on the sealing door (1.2).

3. A roasting furnace tail gas treatment apparatus as claimed in claim 2, wherein: the filtering plugboard (2) is U-shaped, filtering holes are formed in the surfaces of two symmetrical vertical plates (2.1), the two vertical plates (2.1) are arranged in the first-stage filtering box (1), a sealing gasket (2.2) is fixed at the top of the filtering plugboard (2), and the sealing gasket (2.2) is located on the upper surface of the outer side of the first-stage filtering box (1).

4. A roasting furnace tail gas treatment apparatus as claimed in claim 1, wherein: the top and the bottom of two-stage filter case (3) one side are provided with feed liquor pipe (3.1) and fluid-discharge tube (3.2) respectively, all be provided with the valve on feed liquor pipe (3.1) and fluid-discharge tube (3.2).

5. A roasting furnace tail gas treatment apparatus as claimed in claim 1, wherein: the height of the ammonia water does not exceed the lowest position of the steel pipe.

6. A roasting furnace tail gas treatment apparatus as claimed in claim 1, wherein: the lower end and the upper end of the cooling circulation pipe (6) are respectively provided with a liquid inlet (6.1) and a liquid outlet (6.2).

7. A roasting furnace tail gas treatment apparatus as claimed in claim 1, wherein: an air outlet pipe (7.1) is arranged on the auxiliary sedimentation tank (7).