CN209997467U

CN209997467U - clean flue gas mixing and heating device

Info

Publication number: CN209997467U
Application number: CN201920615036.9U
Authority: CN
Inventors: 殷结峰; 吕晨峰; 李元昊; 齐全; 乔冠
Original assignee: Xian Xire Boiler Environmental Protection Engineering Co Ltd
Current assignee: Xian Xire Boiler Environmental Protection Engineering Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-01-31
Anticipated expiration: 2029-04-30

Abstract

The utility model discloses a mixed rising temperature device of clean flue gas, including high temperature flue gas entry flue, high temperature flue gas distributor box, clean flue gas casing and a plurality of high temperature flue gas distribution branch pipe, the export of high temperature flue gas entry flue is linked together with the entry of high temperature flue gas distributor box, the end of each high temperature flue gas distribution branch pipe communicates with high temperature flue gas distributor box respectively, another end of each high temperature flue gas distribution branch pipe inserts in clean flue gas casing, a plurality of hot-blast air distribution holes have been seted up to the side of each high temperature flue gas distribution branch pipe, wherein, each hot-blast air distribution hole all is located clean flue gas casing, and all just to the flow direction of clean flue gas in the clean flue gas casing, the device can the effectual temperature that improves clean flue gas, reduce the risk that causes the jam after clean flue gas gets into GGH.

Description

clean flue gas mixing and heating device

Technical Field

The utility model belongs to steel plant flue gas desulfurization denitration field relates to kinds of clean flue gas mixed rising temperature device.

Background

In order to improve the quality of atmospheric environment, national and partial local governments set increasingly strict emission standards for the steel industry, and require atmospheric pollutants such as NOx and SO generated by combustion of sintering machines and the like₂Dust and the like are treated by dust removal, desulfurization and denitration measures.

For the desulfurization and denitrification device of the sintering machine in the steel plant, when the technological route of firstly removing dust from the flue gas of the sintering machine, then desulfurizing by a wet method, heating up the GGH and finally denitrifying is adopted, the flue gas of the desulfurized clean flue gas is wet flue gas with the temperature close to the saturation temperature, and the wet clean flue gas enters the GGH for heat exchange, so that the deposition and blockage of the GGH are easily caused, and the long-term stable operation of the GGH is not facilitated.

Therefore, clean flue gas mixing and heating devices need to be designed, the guided high-temperature flue gas is mixed with the desulfurized clean flue gas, the temperature of the clean flue gas is increased, the relative humidity is reduced, and the risk of blockage caused by the clean flue gas entering the GGH is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide kinds of clean flue gas and mix rising temperature device, the device can the effectual temperature that improves the clean flue gas, reduces the risk that arouses the jam after clean flue gas gets into GGH.

In order to achieve the purpose, the clean flue gas mixing and heating device of the utility model comprises a high-temperature flue gas inlet flue, a high-temperature flue gas distribution box, a clean flue gas shell and a plurality of high-temperature flue gas distribution branch pipes;

the outlet of the high-temperature flue gas inlet flue is communicated with the inlet of the high-temperature flue gas distribution box, the ends of the high-temperature flue gas distribution branch pipes are respectively communicated with the high-temperature flue gas distribution box, the other ends of the high-temperature flue gas distribution branch pipes are inserted into the clean flue gas channel shell, and a plurality of hot air distribution holes are formed in the side surface of each high-temperature flue gas distribution branch pipe, wherein each hot air distribution hole is located in the clean flue gas channel shell and is just opposite to the flowing direction of clean flue gas in the clean flue gas channel shell.

The outer wall of the clean flue shell is connected with the part of the high-temperature flue gas distribution branch pipe, which is positioned outside the clean flue shell, through a reinforcing rib.

The clean flue shell is provided with a through hole for the high-temperature flue gas distribution branch pipe to pass through, and the high-temperature flue gas distribution branch pipe and the clean flue shell are welded at the position of the through hole.

And a limiting support for limiting each high-temperature flue gas distribution branch pipe is arranged in the clean flue shell, wherein the end part of each high-temperature flue gas distribution branch pipe penetrates through the limiting support.

The clean flue shell is internally provided with a plurality of inner support rods which are connected.

And the hot air distribution holes on the high-temperature flue gas distribution branch pipe are distributed in sequence along the axial direction.

The utility model discloses following beneficial effect has:

clean flue gas mix rising temperature device when concrete operation, the high temperature flue gas enters into clean flue casing through high temperature flue gas entry flue, high temperature flue gas distributor box, high temperature flue gas distribution branch pipe and hot-blast air distribution hole in to adopt the mode and the clean flue gas homogeneous mixing of mixing against the current, with the temperature that improves clean flue gas, reduce the relative humidity of clean flue gas, reduce the risk that arouses the jam after clean flue gas gets into GGH, simple structure, the construction installation of being convenient for.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a front view of the present invention.

Wherein, 1 is a clean flue shell, 2 is a reinforcing rib, 3 is an inner support rod, 4 is a high-temperature flue gas distribution box, 5 is a high-temperature flue gas inlet flue, 6 is a high-temperature flue gas distribution branch pipe, 7 is a hot air distribution hole, and 8 is a limiting support.

Detailed Description

The present invention will be described in further detail at with reference to the accompanying drawings:

referring to fig. 1, 2 and 3, the clean flue gas mixing and heating device of the present invention comprises a high temperature flue gas inlet flue 5, a high temperature flue gas distribution box 4, a clean flue gas shell 1 and a plurality of high temperature flue gas distribution branch pipes 6, wherein an outlet of the high temperature flue gas inlet flue 5 is communicated with an inlet of the high temperature flue gas distribution box 4, ends of the high temperature flue gas distribution branch pipes 6 are respectively communicated with the high temperature flue gas distribution box 4, another end of each high temperature flue gas distribution branch pipe 6 is inserted into the clean flue gas shell 1, a plurality of hot air distribution holes 7 are provided on a side surface of each high temperature flue gas distribution branch pipe 6, wherein each hot air distribution hole 7 is located in the clean flue gas shell 1 and is directly aligned to a flow direction of clean flue gas in the clean flue gas shell 1.

The outer wall of the clean flue shell 1 is connected with the part of the high-temperature flue gas distribution branch pipe 6, which is positioned outside the clean flue shell 1, through the reinforcing rib 2; the clean flue shell 1 is provided with a through hole for the high-temperature flue gas distribution branch pipe 6 to pass through, and the high-temperature flue gas distribution branch pipe 6 is welded with the clean flue shell 1 at the position of the through hole.

A limiting support 8 used for limiting each high-temperature flue gas distribution branch pipe 6 is arranged in the clean flue shell 1, wherein the end part of each high-temperature flue gas distribution branch pipe 6 penetrates through the limiting support 8, a plurality of inner support rods 3 are arranged in the clean flue shell 1 and connected with the inner support rods, and the inner support rods and the hot air distribution holes 7 on the high-temperature flue gas distribution branch pipes 6 are sequentially distributed along the axial direction.

The reinforcing ribs 2, the high-temperature flue gas inlet flue 5 and the high-temperature flue gas distribution box 4 are made of carbon steel; the clean flue shell 1, the inner stay bar 3 and the high-temperature flue gas distribution branch pipe 6 are made of stainless steel; the inside of the clean flue shell 1 adopts high-temperature glass scales for corrosion prevention.

The utility model discloses a concrete working process does:

the high-temperature flue gas enters the high-temperature flue gas distribution box 4 through the high-temperature flue gas inlet flue 5, then enters the high-temperature flue gas distribution branch pipe 6, then enters the inside of the clean flue shell 1 through the hot air distribution holes 7 and then is mixed with the clean flue gas, wherein the high-temperature flue gas is mixed with the clean flue gas in a countercurrent mode through the hot air distribution holes 7, and therefore the temperature of the clean flue gas is increased.

The outer wall of the clean flue shell 1 and the high-temperature flue gas distribution branch pipe 6 are welded and reinforced through the reinforcing ribs 2, and the inner portion of the clean flue shell 1 is welded and reinforced through the inner support rods 3, so that the structural strength is guaranteed.

The tail end of the high-temperature flue gas distribution branch pipe 6 is limited by the limiting support 8, so that the stability of the high-temperature flue gas distribution branch pipe 6 is ensured, and the high-temperature flue gas distribution branch pipe 6 can be expanded freely after hot air is introduced.

Claims

The clean flue gas mixing and heating device is characterized by comprising a high-temperature flue gas inlet flue (5), a high-temperature flue gas distribution box (4), a clean flue gas shell (1) and a plurality of high-temperature flue gas distribution branch pipes (6);

the outlet of the high-temperature flue gas inlet flue (5) is communicated with the inlet of the high-temperature flue gas distribution box (4), the ends of the high-temperature flue gas distribution branch pipes (6) are respectively communicated with the high-temperature flue gas distribution box (4), the other ends of the high-temperature flue gas distribution branch pipes (6) are inserted into the clean flue gas channel shell (1), a plurality of hot air distribution holes (7) are formed in the side surface of each high-temperature flue gas distribution branch pipe (6), wherein each hot air distribution hole (7) is located in the clean flue gas channel shell (1), and the hot air distribution holes are just opposite to the flowing direction of the clean flue gas in the clean flue gas channel shell (1).
2. The clean flue gas mixing and heating device according to claim 1, wherein the outer wall of the clean flue housing (1) is connected with the part of the high temperature flue gas distribution branch pipe (6) located outside the clean flue housing (1) through the reinforcing rib (2).
3. The clean flue gas mixing and heating device according to claim 1, wherein the clean flue housing (1) is provided with a through hole for the high temperature flue gas distribution branch pipe (6) to pass through, and the high temperature flue gas distribution branch pipe (6) is welded to the clean flue housing (1) at the through hole.
4. The clean flue gas mixing and heating device according to claim 1, wherein a limiting support (8) for limiting each high-temperature flue gas distribution branch pipe (6) is arranged in the clean flue housing (1), and the end of each high-temperature flue gas distribution branch pipe (6) passes through the limiting support (8).
5. The clean flue gas mixing and heating device according to claim 1, wherein a plurality of inner support rods (3) are arranged in the clean flue housing (1) and connected with each other.
6. The clean flue gas mixing and heating device as claimed in claim 1, wherein the hot air distribution holes (7) on the high-temperature flue gas distribution branch pipe (6) are distributed in sequence along the axial direction.