CN111607438A

CN111607438A - Side direction spray column that admits air with structure flow equalizes

Info

Publication number: CN111607438A
Application number: CN202010590591.8A
Authority: CN
Inventors: 陶迎; 钟渝; 张瑶; 谢建
Original assignee: CISDI Chongqing Information Technology Co Ltd
Current assignee: CISDI Chongqing Information Technology Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2020-09-01

Abstract

The invention provides a side air inlet spray tower with a flow equalizing structure, which comprises a tower body, wherein a side gas inlet is formed in the lower part of the tower body, a gas outlet is formed in the top of the tower body, the side air inlet spray tower further comprises a vertically arranged sleeve and a transversely arranged porous plate which is positioned above the sleeve, the sleeve is at least two layers which are concentrically arranged inside and outside, the position of the sleeve in the vertical direction corresponds to the gas inlet, a gas through hole is formed in the side surface of each layer of sleeve, and annular spaces are formed between the two adjacent layers of sleeves inside and outside and between the outermost sleeve and the inner wall of the tower body. According to the invention, a plurality of annular buffer spaces are formed by the sleeves arranged inside and outside to buffer airflow, the airflow flows inwards layer by layer through the coal gas through holes, and finally flows to the spraying area from the upper porous plate, so that the turbulent airflow flowing from the side direction is converted into more uniform airflow in the tower body, the uniformity of airflow distribution in the spraying area in the tower body is improved, and the dust removal or acid removal effect of the tower body is improved.

Description

Side direction spray column that admits air with structure flow equalizes

Technical Field

The invention belongs to the technical field of coal gas dust removal, and particularly relates to a side air inlet spray tower with a flow equalizing structure.

Background

In steel smelting processes, the exhaust gases produced often contain large amounts of dust or harmful acid gases, such as blast furnace gas. In order to meet the increasingly strict environmental requirements, the blast furnace gas must be correspondingly dedusted and deacidified before being discharged so as to reach the discharge standard. The treatment process adopted frequently in the past is full-dry cloth bag dust removal, but the problem brought by the process is obvious, namely when the temperature is reduced, acidic components in clean gas after dust removal are separated out, the gas pipe network is seriously corroded and even penetrated in a short time, safety accidents such as gas leakage are caused, and the normal production and operation of a blast furnace are seriously influenced.

At present, acid components in blast furnace gas are treated by a spray tower deacidification process, but a large amount of gas enters the spray deacidification tower from the side direction, so that the gas flow in a tower body is obviously uneven, the gas flow in the tower body has the phenomena of serious deflection, overhigh local flow velocity, disordered flow field and the like, spray water and the gas cannot be uniformly contacted, the local contact time is too short, even a large amount of gas directly escapes against the wall, and the deacidification and washing effect is seriously influenced. Therefore, the acid removal efficiency is improved, and the uniformity of airflow distribution in the tower body is improved, which becomes a problem to be solved urgently.

Disclosure of Invention

In view of the above defects of the prior art, an object of the present invention is to provide a side-inlet spray tower with a flow equalizing structure, which improves the uniformity of airflow distribution in the tower body and improves the dust removal or acid removal effect of the tower body.

In order to achieve the above objects and other related objects, the technical solution of the present invention is as follows:

the utility model provides a side direction spray column that admits air with structure flow equalizes, includes the tower body, the lower part of tower body is provided with the coal gas entry of side direction, the top of tower body is provided with the coal gas export, still including setting up the structure of flow equalizing in the tower body lower part, the structure of flow equalizing includes the sleeve of vertical setting and is located the perforated plate of sleeve top and horizontal setting, the sleeve is inside and outside at least two-layer that sets up with one heart, the sleeve on vertical side the position with the coal gas entry corresponds, and the coal gas via hole has all been seted up to every layer of telescopic side, all forms annular space between the inside and outside adjacent two-layer sleeve and between the inner wall of outmost sleeve and tower body, and coal gas gets into each annular space by the coal gas via hole after the.

Adopt above-mentioned structure, the sleeve through inside and outside setting forms a plurality of annular buffer spaces, cushions the air current, and the air current passes through the gas via hole inwards to flow in layer one by layer, sprays the district from the perforated plate flow direction of top at last to change the turbulent air current that the side direction came into and flow into more even air current in the tower body, improve the interior homogeneity that sprays district air current and distribute of tower body, improve the tower body and remove dust or deacidify effect.

Optionally, every layer the sleeve sets up with the tower body is concentric, the perforated plate is installed on the tower body inner wall, telescopic upper end links to each other with the perforated plate, and is gapped between telescopic lower extreme and the tower body bottom.

Optionally, the perforated plate is a circular plate provided with a plurality of vent holes, the sleeve divides the perforated plate into different annular regions, and the openings of the different annular regions on the perforated plate are the same or different in size.

Optionally, each layer of the sleeve is provided with a plurality of gas through holes, wherein at least one gas through hole in each layer of the sleeve faces the gas inlet, and the position of the gas through hole is opposite to the gas inlet.

Optionally, in two adjacent layers of sleeves, the diameter of the gas through hole of the outer layer sleeve is larger than that of the gas through hole of the inner layer sleeve.

Optionally, the height of the center of the gas through hole of each layer of sleeve is the same as that of the center of the gas inlet.

Optionally, the upper end of each layer of the sleeve is higher than the top of the gas inlet, and the lower end of each layer of the sleeve is lower than the bottom of the gas inlet.

Optionally, the height of the lower end of the sleeve gradually decreases from the outer layer to the inner layer.

Optionally, the edge of perforated plate and tower body inner wall zonulae occludens, the sleeve is hung and is installed on the perforated plate or the sleeve passes through the support to be supported on the inner wall of tower body.

Optionally, each layer of the sleeve is provided with a plurality of gas through holes along the circumferential direction.

As mentioned above, the beneficial effects of the invention are: according to the invention, a plurality of annular buffer spaces are formed by the sleeves arranged inside and outside to buffer airflow, the airflow flows inwards layer by layer through the coal gas through holes, and finally flows to the spraying area from the upper porous plate, so that the turbulent airflow flowing from the side direction is converted into more uniform airflow in the tower body, the uniformity of airflow distribution in the spraying area in the tower body is improved, and the dust removal or acid removal effect of the tower body is improved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the connection of the outer sleeve to the perforated plate according to the present invention;

FIG. 3 is a schematic view of the connection of the intermediate layer sleeve to the perforated plate of the present invention;

FIG. 4 is a schematic view of the connection of the inner sleeve to the perforated plate according to the present invention;

FIG. 5 is a top view of a multi-well plate of the present invention;

FIG. 6 is a simulated flow diagram of a prior art spray tower;

fig. 7 is a simulated flow diagram of a spray tower of the present invention.

Part number description:

1-a tower body; 11-gas inlet; 12-gas outlet; 13-a spray gun; 21-a perforated plate; 22-a sleeve; 23-gas passing through holes; 24-vent hole.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Examples

As shown in fig. 1 to 5, the lateral air intake spray tower with a flow equalizing structure in the example of this embodiment includes a tower body 1, a lateral gas inlet 11 is provided on a side surface of a lower portion of the tower body 1, a gas outlet 12 is provided on a top portion of the tower body 1, the flow equalizing structure is provided on the lower portion of the tower body 1, the flow equalizing structure corresponds to the gas inlet 11, specifically, after the gas enters the tower body 1 from the gas inlet 11, the gas passes through the flow equalizing structure and then enters an upper spray area, and the spray area is provided with a spray gun 13 and the like; the flow equalizing structure comprises a porous plate 21 and at least two layers of sleeves 22 concentrically arranged inside and outside, the porous plate 21 is vertically arranged (arranged perpendicular to the axial direction of the tower body 1), and a plurality of vent holes 24 are formed; all the sleeves 22 are positioned below the perforated plate 21 and are arranged vertically; the position of the sleeve 22 in the vertical direction corresponds to the gas inlet 11, a gas through hole 23 is formed in the side face of each layer of sleeve 22, annular spaces are formed between two adjacent layers of sleeves 22 inside and outside and between the outermost layer of sleeve 22 and the inner wall of the tower body 1, the innermost layer of sleeve 22 is a circular space, gas enters the annular space on the outermost side after entering the tower body 1 from the gas inlet 11, then enters each annular space and circular space through the gas through hole 23 and upwards enters the spraying area above the porous plate 21 through the porous plate 21, and the gas flow direction is shown by an arrow in fig. 1.

Sleeve 22 through inside and outside setting forms a plurality of annular buffer spaces, cushions the air current, and the air current passes through coal gas via hole 23 inwards to flow in layer upon layer, and the porous plate 21 flow direction that follows the top at last sprays the district to change the turbulent air current that the side direction came into to flow into more even air current in the tower body 1, improve the homogeneity that sprays district air current distribution in the tower body 1, improve the dust removal of tower body 1 or deacidify effect.

Wherein, every layer sleeve 22 and tower body 1 concentric setting, perforated plate 21 are the circular slab, and perforated plate 21 installs on the inner wall of tower body 1, and the edge of

perforated plate

21 and 1 inner wall zonulae occludens of tower body, for example fixed through welding or other modes, and sleeve 22's upper end links to each other with perforated plate 21, and is gapped between sleeve 22's lower extreme and the tower body 1 bottom.

When the coal gas enters the tower body 1, one part of the coal gas flows horizontally along the annular space at the outermost side, one part of the coal gas flows into the annular space at the inner side from the coal gas through hole 23 of the sleeve 22 at the outermost side, one part of the coal gas moves upwards along the sleeve 22, and the other part of the coal gas moves downwards along the sleeve 22 and enters the annular space at the inner side through a gap between the sleeve 22 and the bottom of the tower body 1; the gas between the two adjacent layers of the sleeves 22 flows in the manner described above.

In this example, the upper end of the sleeve 22 is hung on the lower surface of the porous plate 21 and connected by welding; the lower end of the sleeve 22 is suspended. In other embodiments, the sleeve 22 may also be supported by brackets on the inner wall or bottom of the tower 1.

The upper end of the sleeve 22 is connected with the porous plate 21 to divide the porous plate 21 into different annular areas, and the openings of the different annular areas on the porous plate 21 are the same or different in size. In the present example, three layers of sleeves 22 are illustrated, and as shown in fig. 1 and 5, the sleeves 22 comprise an outer sleeve 22a, a middle sleeve 22b and an inner sleeve 22c, which divide the lower part of the tower 1 into three annular spaces and one circular space; the corresponding perforated plate 21 is divided into three annular regions A, B, C and circular regions D, the size of the vent holes 24 corresponding to each region can be the same or different, and can be set according to requirements, for example, the opening of the circular region D is larger than that of the annular region C, the opening of the annular region C is larger than that of the annular region B, and the opening of the annular region B is larger than that of the annular region A; the distribution density of the ventilation holes 24 in each region may be set according to the amount of gas entering the annular space and the circular space, and the size of the openings in each region may be the same when the densities are different.

In this example, each layer of the sleeve 22 is circumferentially provided with a plurality of gas through holes 23, wherein at least one gas through hole 23 of each layer of the sleeve 22 faces the gas inlet 11, and the position of the gas through hole 23 is opposite to the gas inlet 11, so that gas can rapidly flow inwards through the gas through hole 23, and the gas can be rapidly diffused. The diameters of the gas through holes 23 on the sleeves 22 are gradually reduced from the outer layer to the inner side, namely, in the two adjacent layers of sleeves 22, the diameter of the gas through hole 23 of the outer layer sleeve 22 is larger than that of the gas through hole 23 of the inner layer sleeve 22, and the diameter of the gas through hole 23 of the outermost layer sleeve 22 is smaller than that of the gas inlet 11; as shown in fig. 2 to 4, the gas passing hole 23 of the outer sleeve 22a has a diameter larger than that of the gas passing hole 23 of the intermediate sleeve 22b, and the gas passing hole 23 of the intermediate sleeve 22b has a diameter larger than that of the gas passing hole 23 of the inner sleeve 22 c; this arrangement allows gas entering through the outer sleeve 22a to flow partially inwardly through the gas passage holes 23 of the intermediate sleeve 22b and partially within the annular space defined between the outer sleeve 22a and the intermediate sleeve 22 b.

As shown in figure 1, the height of the center of the gas through hole 23 of each layer of sleeve 22 is the same as that of the center of the gas inlet 11, so that gas can rapidly enter the flow equalizing structure. The upper end of each layer of the sleeve 22 is higher than the top of the gas inlet 11, and the lower end of each layer of the sleeve 22 is lower than the bottom of the gas inlet 11, so that the buffering and flow equalizing effects of the sleeve 22 on the gas are ensured.

In this case, the height of the lower end of the sleeve 22 gradually decreases from the outer layer to the inner layer, i.e., the lower end of the inner sleeve 22c is lower than the lower end of the middle sleeve 22b, and the lower end of the middle sleeve 22b is lower than the lower end of the outer sleeve 22a, thereby facilitating the gas to enter the space inside the outer sleeve 22 from the lower end of the outer sleeve 22.

When no flow equalizing device is arranged in the tower body 1, the simulation result of the flow field in the tower body 1 is shown in fig. 6, and the flow line of the spraying area is relatively disordered and uneven. The simulation result of the flow field in the tower body 1 of the invention is shown in fig. 7, the flow field of the spraying area above the porous plate 21 is obviously improved, and compared with the flow field in fig. 6, the air flow is more uniform and not disordered.

The invention adopts the multilayer sleeve 22 to divide the plane of the perforated plate 21 into a plurality of different annular areas, flexibly adjusts/controls the flow rate of the airflow passing through the different annular areas of the perforated plate 21 by controlling the size of the multilayer sleeve 22, the side opening of the sleeve 22, the length of the sleeve 22 and the opening arrangement of the different annular areas of the perforated plate 21, improves the distribution uniformity of the airflow passing through the perforated plate 21 upwards, and eliminates the phenomena of obvious bias flow, local high-speed area, airflow disorder and the like existing when the airflow flows upwards after entering the tower body 1 from the side direction as much as possible. The device simple structure, simple to operate, the low price, and hinder and decrease less, be applicable to different diameters size and height side direction air intake tower body 1, have extensive suitability.

Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a side direction spray column that admits air with structure flow equalizes, includes the tower body, the lower part of tower body is provided with the coal gas entry of side direction, the top of tower body is provided with coal gas outlet, its characterized in that: still including setting up the structure of flow equalizing in the tower body lower part, the structure of flow equalizing includes the sleeve of vertical setting and is located the perforated plate of sleeve top and horizontal setting, the sleeve is inside and outside at least two-layer that sets up with one heart, the sleeve in vertical ascending position of side with the coal gas entry corresponds, and the coal gas via hole has all been seted up to every layer of telescopic side, all forms annular space between inside and outside adjacent two-layer sleeve and between the inner wall of outmost sleeve and tower body, and after coal gas got into the tower body from the coal gas entry, got into each annular space by the coal gas via hole to get into through the perforated plate and spray the district.

2. The side-inlet spray tower with the flow equalizing structure of claim 1, wherein: every layer the sleeve sets up with the tower body is concentric, the perforated plate is installed on the tower body inner wall, telescopic upper end links to each other with the perforated plate, and is gapped between telescopic lower extreme and the tower body bottom.

3. The side-inlet spray tower with the flow equalizing structure of claim 1, wherein: the perforated plate is a circular plate provided with a plurality of vent holes, the perforated plate is divided into different annular areas by the sleeve, and the sizes of the holes in the different annular areas on the perforated plate are the same or different.

4. The side-inlet spray tower with the flow equalizing structure of claim 1, wherein: each layer of sleeve is provided with a plurality of gas through holes, wherein at least one gas through hole in each layer of sleeve faces to the gas inlet, and the position of the gas through hole is opposite to the gas inlet.

5. The side-inlet spray tower with the flow equalizing structure of claim 5, wherein: in two adjacent layers of sleeves, the diameter of the gas through hole of the outer layer sleeve is larger than that of the gas through hole of the inner layer sleeve.

6. The side-inlet spray tower with the flow equalizing structure of claim 5, wherein: the height of the center of the gas through hole of each layer of the sleeve is the same as that of the center of the gas inlet.

7. The side-inlet spray tower with the flow equalizing structure of claim 1, wherein: the upper end of each layer of the sleeve is higher than the top of the gas inlet, and the lower end of each layer of the sleeve is lower than the bottom of the gas inlet.

8. The side-inlet spray tower with the flow equalizing structure of claim 7, wherein: the height of the lower end of the sleeve is gradually reduced from the outer layer to the inner layer.

9. The side-inlet spray tower with the flow equalizing structure of claim 1, wherein: the edge of perforated plate and tower body inner wall zonulae occludens, the sleeve is hung and is installed on the perforated plate or the sleeve passes through the support to be supported on the inner wall of tower body.

10. The side-inlet spray tower with the flow equalizing structure of claim 1, wherein: and a plurality of gas through holes are formed in each layer of the sleeve along the circumferential direction.