CN215998010U

CN215998010U - Purification system of flue gas in billet rolling process

Info

Publication number: CN215998010U
Application number: CN202122531441.2U
Authority: CN
Inventors: 王怀安; 李莉莎; 樊云飞; 师磊; 李水; 李雪川
Original assignee: Beijing Bopeng Zhongke Environmental Protection Technology Co ltd
Current assignee: Beijing Bopeng Zhongke Environmental Protection Technology Co ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-03-11
Anticipated expiration: 2031-10-20

Abstract

The application relates to a flue gas purification system in a billet rolling process, which comprises a rolling mill room, a purification device and a diffusion chimney, wherein a side suction cover is arranged in the rolling mill room and used for absorbing dust-containing waste gas, the side suction cover is communicated with the purification device through a dust removal pipeline, an air inlet device, a sound wave resonance device, a spraying device and a dehydration device are arranged in the purification device, the purification device is communicated with the diffusion chimney through a dust removal fan, and the rolling mill room, the purification device and the diffusion chimney are sequentially communicated; the dust-containing flue gas discharged from the rolling mill room is collected by a side suction hood under the traction of a fan and enters a purification device through a dust removal pipeline, and the direction of the entering flue gas is adjusted by an air inlet device; the sound wave resonance device and the spraying device enable dust-containing particles in the flue gas to form dust-containing liquid drops which can be removed; and after dust-containing liquid drops in the flue gas are removed by the dehydration device, the steel rolling flue gas is discharged by a diffusing chimney after reaching the standard.

Description

Purification system of flue gas in billet rolling process

Technical Field

The utility model relates to a novel environmental protection technology field especially relates to a clean system of steel billet rolling in-process flue gas.

Background

The red hot steel billet is at rolling in-process, produces a large amount of vapor around the rolling mill when producing a large amount of iron scale, iron fillings dust and water spray cooling, if do not set up dust collector in the factory building, these dust and vapor mixture scatter into the factory building in to the factory building diffusion everywhere, cause very big harm for the environment in rolling mill and the factory building, factory building and equipment can be covered by the dust of reddish brown, and the long-term direct contact of workman can harm physical and mental health. The latest environmental protection regulations require that the part of the smoke emission is organized to reach the standard from the unorganized emission, so the smoke emission must be collected, purified and discharged to reach the standard.

The organized discharge of the overflow flue gas in the steel rolling process is still in the initial stage of research at present, and the adopted method is generally that the overflow flue gas is directly discharged at high altitude after being collected, or partial dust is removed through spray washing and then discharged. And can not meet the requirement of environmental protection.

Disclosure of Invention

In view of this, the application provides a purification system of flue gas in the rolling process of steel billet, can purify steel rolling flue gas effectively, makes this part flue gas discharge up to standard.

According to one aspect of the application, a system for purifying flue gas in a billet rolling process is provided, and comprises a rolling mill room, a side suction cover, a purification device, a dust removal pipeline and a diffusion chimney; the side suction cover is arranged in the rolling mill room and used for absorbing dust-containing waste gas, and the side suction cover is communicated with the purification device through the dust removal pipeline; an air inlet device, a sound wave resonance device, a spraying device and a dewatering device are arranged in the purifying device, and the purifying device is communicated with a diffusing chimney through a dust removal fan; the dust removal fan is arranged behind the purification device and used for providing system power; the rolling mill room, the purification device and the diffusing chimney are communicated in sequence.

In a possible realization, the air inlet device is installed in the purification device near the bottom end part, and the elbow of the outlet of the air inlet device is provided with a preset angle.

In one possible implementation, the acoustic resonance device comprises one or more layers of compressed air or nitrogen driven sound generating devices.

In one possible implementation, the spraying device comprises one and/or more layers of single-medium spray guns.

In a possible implementation manner, a baffle is installed at the bottom of an inner cavity of the dehydration device, and the baffle is obliquely arranged; and a drainage square box communicated with the dehydration device is arranged on the side wall of the purification device, and the drainage square box is connected with the bottom of the baffle.

In a possible implementation manner, the air inlet device, the sound wave resonance device, the spraying device and the dewatering device are sequentially arranged in the inner cavity of the purifying device from bottom to top.

In a possible implementation manner, the water purification device further comprises a drainage device, wherein the drainage device is arranged at the bottom of the purification device, and the drainage device is communicated with the drainage square box through a pipeline.

In a possible implementation manner, the water purification device further comprises a water circulation device, wherein the water circulation device is communicated with the water drainage device, and the water circulation device is arranged adjacent to the purification device.

In one possible implementation mode, an electric valve, an anti-scaling device and an anti-blocking device are installed in the inner cavity of the dust removal pipeline; the anti-scaling device and the anti-blocking device are arranged adjacent to the side suction cover.

The purification system of flue gas among the steel billet rolling process of this application embodiment's beneficial effect: the dust-containing flue gas discharged by the rolling mill in the rolling mill room is collected by a side suction hood in the rolling mill room and enters a purification device through a dust removal pipeline under the traction of a dust removal fan 410, wherein the purification device internally comprises an air inlet device, a sound wave resonance device, a spraying device and a dehydration device. The air inlet device adjusts the direction of the entering smoke; the sound wave resonance device and the spraying device enable dust-containing particles in the flue gas to form dust-containing liquid drops which can be removed; and after dust-containing liquid drops in the flue gas are removed by the dehydration device, the steel rolling flue gas is discharged by a diffusing chimney after reaching the standard.

Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

Fig. 1 shows a main structure diagram of a flue gas purification system in a billet rolling process according to an embodiment of the present application;

FIG. 2 is a partial enlarged view of a flue gas purification system in a billet rolling process according to an embodiment of the present application;

fig. 3 shows a structure diagram of a side suction hood in a flue gas purification system in a billet rolling process according to an embodiment of the present application.

Detailed Description

Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention or for simplicity in description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.

FIG. 1 shows a cross-sectional view of a body structure according to an embodiment of the present application. As shown in fig. 1, the system for purifying flue gas in a billet rolling process according to the embodiment of the present invention includes a rolling mill room 100, a side suction hood, a purification device 300, a dust removal pipe 200, and a diffusion chimney 400; a side suction cover is arranged in the rolling mill room 100 and used for collecting dust-containing smoke, the side suction cover is communicated with the purification device 300 through a dust removal pipeline 200, the purification device 300 comprises an air inlet device 310, a sound wave resonance device 320, a spraying device 330 and a dehydration device 340, the air inlet device 310, the sound wave resonance device 320, the spraying device 330 and the dehydration device 340 are sequentially arranged from bottom to top, a dust removal fan 410 is arranged in the purification device 300 and the diffusion chimney 400 and used for discharging the smoke reaching the standard, and the rolling mill room 100, the purification device 300 and the diffusion chimney 400 are sequentially connected; according to the arrangement, in the rolling mill room 100, smoke generated in the billet rolling process is collected by the side suction hood arranged at the rear side of the rolling mill, and dust-containing smoke collected by the side suction hood enters the purifying device 300 through the dust removal pipeline 200, wherein the air inlet device 310 is arranged at the bottom end part of the purifying device 300, the joint of the air inlet device 310 and the purifying device 300 is bent downwards, the elbow angle of the air inlet device 310 is determined according to the actual smoke content and dust content, at the moment, dust-containing waste gas sequentially passes through the sound wave resonance device 320, the spraying device 330 and the dehydrating device 340 in the purifying device 300, and finally, the purified smoke is discharged through the diffusing chimney 400 in the diffusing chimney; the smoke generated in the billet rolling process can meet the emission standard after being purified by the system. In the system, dust-containing gas becomes flue gas after reaching the standard after being purified and is discharged, so that the environmental protection requirement can be met, and the organized emission of the flue gas is achieved.

It should be noted that in the flue gas purification system in the billet rolling process according to the embodiment of the present application, the dust removal pipe 200 communicated with the side suction hood is transversely disposed and communicated with the purification device 300, and an electric valve, an anti-scaling device and an anti-blocking device are further installed in an inner cavity of the dust removal pipe 200, wherein the dust-containing gas includes impurities such as iron oxide scales and iron filings, and is easy to scale and block in the dust removal pipe 200, so that the installed anti-scaling device and the anti-blocking device can respectively remove the impurities such as iron oxide scales and iron filings, and dust, which are easy to scale and block in the dust removal pipe 200.

Referring to fig. 1, in the system for purifying flue gas in the billet rolling process according to the embodiment of the present application, an air inlet device 310 is communicated with a dust removal pipeline 200; wherein, the air inlet 310 is communicated with the connecting elbow of the purification device 300, so that the dust-containing flue gas enters the purification device 300 along the air inlet 310, the air inlet 310 is installed inside the purification device 300 at a position close to the bottom, wherein the air inlet 310 is transversely arranged, and the air inlet 310 is in the form of an elbow at the connecting position with the diffusing chimney 400.

In the system for purifying flue gas in the billet rolling process according to the embodiment of the present application, the purification device 300 further includes a sound wave resonance device 320; the sound wave resonance device 320 is installed on the upper side of the air inlet device 310, the sound wave resonance device 320 is a sound production device driven by one layer and/or multiple layers of compressed air or nitrogen, and the sound wave resonance device 320 pretreats the dust-containing waste gas by sound waves to enable fine particles in the dust-containing waste gas to collide and gather to form large particles.

Further, the purification apparatus 300 further comprises a spraying apparatus 330; wherein, atomizer 330 comprises one deck and/or multilayer single medium spray gun, is equipped with the single medium spray gun that is used for spouting into the atomizing water droplet in atomizer 330 promptly, makes the large granule after gathering take place to agglomerate, becomes dusty water droplet, and atomizer 330 is installed in the upside of sound wave resonance device 320, and here, atomizer 330 and sound wave resonance device 320 are prior art, and it is no longer repeated here.

Referring to fig. 2, in another possible implementation manner, a dewatering device 340 is further installed in the purification device 300, dust-containing flue gas in the purification device passes through a cyclone blade in the dewatering device 340, due to the effect of centrifugal force, dust-containing liquid droplets in the flue gas are thrown onto the cylinder wall of the purification device 300, the dust-containing liquid droplets thrown onto the cylinder wall slide down to a bottom baffle of the dewatering device along the cylinder wall by virtue of self gravity, and the dust-containing liquid droplets collected by the bottom baffle enter the lower drainage device 500 through a drainage square box and a drainage pipe.

Here, it should also be noted that the bottom end of the purification device 300 is provided with a drainage device 500, which acts as a water seal to ensure the negative pressure state of the purification device.

Referring to fig. 1, in the system for purifying flue gas in a billet rolling process according to the embodiment of the present application, a water circulation device 600 is connected to the purification device 300, and the water circulation device 600 is used for purifying the dust-containing water collected by the drainage device and supplying water to the purification device 300.

The side suction cover is fixed to the rear side of the cabinet body, the rolling mill 110 is arranged between the cabinet body and the side suction cover, and the side suction cover is arranged for collecting smoke generated in the billet rolling process of the rolling mill 110; the duct at the rear side of the side suction hood is communicated with the dust removal duct 200 in the rolling mill room 100, so that the flue gas collected by the side suction hood is dragged by the dust removal fan 410 to pass through the dust removal duct 200 to the purification device 300.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A purification system of flue gas in the process of rolling billets is characterized by comprising the following components:

the device comprises a rolling mill room, a side suction cover, a purification device, a dust removal pipeline and a diffusion chimney;

the side suction cover is arranged in the rolling mill room and used for absorbing dust-containing waste gas, and the side suction cover is communicated with the purification device through the dust removal pipeline;

an air inlet device, a sound wave resonance device, a spraying device and a dewatering device are arranged in the purifying device, and the purifying device is communicated with a diffusing chimney through a dust removal fan;

the dust removal fan is arranged behind the purification device and used for providing system power;

the rolling mill room, the purification device and the diffusing chimney are communicated in sequence.

2. The system for purifying flue gas generated during billet rolling according to claim 1, wherein the air inlet device is installed in the purifying device near the bottom end, and the elbow of the outlet of the air inlet device is provided with a preset angle.

3. The system of claim 1, wherein the acoustic resonance device comprises one or more layers of compressed air or nitrogen driven sound generating devices.

4. The system for purifying flue gas generated in the process of rolling billets as claimed in claim 1, wherein the spraying device comprises one or more layers of single-medium spray guns.

5. The system for purifying flue gas generated in the billet rolling process according to claim 1, wherein a baffle is installed at the bottom of the inner cavity of the dehydration device, and the baffle is obliquely arranged;

and a drainage square box communicated with the dehydration device is arranged on the side wall of the purification device, and the drainage square box is connected with the bottom of the baffle.

6. The system for purifying flue gas generated in the billet rolling process according to any one of claims 2 to 5, wherein the air inlet device, the acoustic resonance device, the spraying device and the dehydration device are arranged in the inner cavity of the purification device from bottom to top.

7. The system for purifying flue gas generated in the billet rolling process according to claim 5, further comprising a drainage device, wherein the drainage device is arranged at the bottom of the purification device, and the drainage device is communicated with the drainage square box through a pipeline.

8. The system for purifying flue gas generated during billet rolling according to claim 7, further comprising a water circulation device, wherein the water circulation device is communicated with the drainage device, and the water circulation device is arranged adjacent to the purification device.

9. The system for purifying the smoke generated in the billet rolling process according to claim 1, wherein an electric valve, an anti-scaling device and an anti-blocking device are installed in the inner cavity of the dust removal pipeline;

the anti-scaling device and the anti-blocking device are arranged adjacent to the side suction cover.