CN216662982U

CN216662982U - Desulfurizing tower

Info

Publication number: CN216662982U
Application number: CN202122960395.8U
Authority: CN
Inventors: 禚玉群; 任雯; 王涛; 刘宁; 李亚斌; 李淑慧
Original assignee: Tsinghua University; Shanxi Research Institute for Clean Energy of Tsinghua University
Current assignee: Tsinghua University; Shanxi Research Institute for Clean Energy of Tsinghua University
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-06-03
Anticipated expiration: 2031-11-26

Abstract

The utility model discloses a desulfurizing tower, which comprises an annular shell; the desulfurizer bin is formed by vertically penetrating 2 planar air permeable walls which are vertically arranged on the inner side of the annular shell, a coal gas bin is formed between the 2 planar air permeable walls, a horizontal baffle is arranged in the coal gas bin in the height direction and divides the coal gas bin into a plurality of sub coal gas bins; a feed inlet; a discharge port; a plurality of gas inlets; and a plurality of gas outlets. The desulfurizing tower structure does not need to be manually put into a tank for material cleaning and distributing, so that the manual labor intensity is low, and the material changing efficiency is high; the gas distribution control is more visual and accurate due to the arrangement of the sub-bins, the gas flow field is optimized, the utilization rate of the desulfurizer is improved, and the problems of low utilization rate of the desulfurizer and local hardening of the desulfurizer caused by bias gas flow are solved; the gas circuit is transversely arranged, so that the reaction contact area is increased, the gas flow rate is reduced, and the gas running resistance is reduced.

Description

Desulfurizing tower

Technical Field

The utility model belongs to the technical field of desulfurization, and particularly relates to a desulfurizing tower.

Background

The gas desulfurization device for the iron-making blast furnace of the steel plant is divided into a dry desulfurization device and a wet desulfurization device, wherein the market share of the dry desulfurization device is about more than 85 percent. The consumption of the chemical adsorption desulfurizer used for removing inorganic sulfur in the dry desulfurization device is large, and the chemical adsorption desulfurizer needs to be replaced periodically, the existing dry desulfurization tower is a vertical/horizontal fixed bed desulfurization tank, the desulfurizer is filled into the tank as bulk granules, and the desulfurizer needs to be manually put into the tank and taken out or put into the tank when being replaced. The existing dry-method desulfurizing tower has the following disadvantages: 1. the blast furnace gas as the operation medium in the tank is toxic and explosive, and the potential safety hazard is great if the gas remains in the tank in the operation process; 2. the desulfurizer is in bulk granules, and the filling amount is large, so that the desulfurizer is difficult to replace, and the labor intensity of workers is high; 3. the waste desulfurizer contains sulfide and partial monomer sulfur, the taste is pungent, and the operation of bulk granules in a closed space has large dust emission, which causes the severe working conditions in the tank; 4. the working schedule of the desulfurizer replacement is slow, thereby reducing the utilization rate of the environment-friendly facility for blast furnace gas desulfurization.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the utility model aims to provide the desulfurizing tower, the structure of the desulfurizing tower does not need to be manually put into a tank for cleaning and distributing materials, the manual labor intensity is low, and the material changing efficiency is high; the gas distribution control is more visual and accurate due to the arrangement of the sub-bins, the gas flow field is optimized, the utilization rate of the desulfurizer is improved, and the problems of low utilization rate of the desulfurizer and local hardening of the desulfurizer caused by bias gas flow are solved; the gas circuit is transversely arranged, so that the reaction contact area is increased, the gas flow rate is reduced, and the gas running resistance is reduced.

The utility model provides a desulfurizing tower. According to an embodiment of the utility model, the desulfurization tower comprises:

an annular housing;

the desulfurizer bin is used for containing a desulfurizer, a coal gas bin is formed between the annular shell and the planar air permeable wall, the coal gas bin is provided with a horizontal baffle in the height direction, and the horizontal baffle divides the coal gas bin into a plurality of sub coal gas bins;

the feed inlet is formed in the top of the desulfurizer bin;

the discharge port is arranged at the bottom of the desulfurizer bin;

the gas inlets are arranged on one side of the annular shell, and at least one gas inlet is arranged on the shell corresponding to each sub-gas bin;

the gas outlets are arranged on the other side of the annular shell, and at least one gas outlet is arranged on the shell corresponding to each sub-gas bin.

According to the desulfurizing tower provided by the embodiment of the utility model, firstly, feeding is carried out through the feeding hole arranged at the top of the desulfurizing agent bin, discharging is carried out through the discharging hole arranged at the bottom of the desulfurizing agent bin, the desulfurizing agent bin is of an up-and-down through structure, the desulfurizing agent is discharged through vertical gravity, manual canning, material cleaning and material distribution are not needed, the manual labor intensity is low, and the material changing efficiency is high; secondly, in order to ensure that all desulfurizer filling surfaces are uniformly distributed with gas, the gas bin is divided into a plurality of sub-gas bins through baffles after flow field simulation, the sub-gas bins are arranged in a separated mode, gas distribution control is more visual and accurate, a gas flow field is optimized, the utilization rate of the desulfurizer is improved, and the problems of low utilization rate of the desulfurizer and local hardening of the desulfurizer caused by bias gas flow are solved; thirdly, the gas paths are transversely arranged, so that the reaction contact area is increased, the gas flow rate is reduced, and the gas running resistance is reduced; fourthly, the gas bin and the desulfurizer bin are divided by the ventilating wall, so that the uniform and controllable contact of gas with the desulfurizer is ensured, and the smooth movement of the desulfurizer during discharging can be ensured; fifthly, the desulfurizing tower has a vertical structure, occupies a small area, saves the field and is more suitable for transforming or replacing narrow spaces of projects.

In addition, the desulfurization tower according to the above embodiment of the present invention may further have the following additional technical features:

in some embodiments of the utility model, the desulfurization tower further comprises: a first flow regulator disposed within the gas silo at the gas inlet, the first flow regulator including a first necked down opening disposed proximate the gas inlet and a first flared opening disposed distal to the gas inlet.

In some embodiments of the utility model, the desulfurization tower further comprises: a second flow regulator disposed within the gas silo at the gas outlet, the second flow regulator including a second throat disposed proximate the gas outlet and a second flared mouth disposed distal the gas outlet.

In some embodiments of the utility model, the desulfurization tower further comprises: the base, the base sets up the bottom of desulfurizing tower.

In some embodiments of the present invention, the annular housing has a cross section in a horizontal direction that is circular or polygonal.

In some embodiments of the utility model, the planar gas permeable walls are louver walls or mesh walls.

In some embodiments of the utility model, the width of the desulfurizing agent bin is 0.4 to 0.6 times the inner diameter of the desulfurizing tower.

In some embodiments of the utility model, the number of sub-silos is 2-5.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a cross-sectional view of a desulfurization tower according to one embodiment of the present invention, taken along the vertical direction;

fig. 2 is a sectional view of the desulfurization tower of fig. 1 taken along the direction a-a.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the reactor or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered as limiting.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Because of the characteristics of the coal gas desulfurization process, the desulfurizer is dry granular material, the process is the existing mainstream process and can not obviously change within a period of time, but the existing dry desulfurization tower is still a fixed bed reaction tank body, the structural design is backward, and the serious defects of high material changing labor intensity, high potential safety hazard, severe working conditions, low equipment utilization rate, backward gas flow field arrangement and the like exist. With the further extension of the national environmental protection requirements, the blast furnace gas desulfurization has been proposed in various places successively and has strict requirements. The existing fixed bed desulfurization tank body is difficult to meet the actual use requirements of large blast furnace gas desulfurization operation gas volume and high safety and reliability requirements, and can be gradually eliminated. The market will place a great demand for safer, more efficient, more mechanically automated products.

In view of this, the present invention provides a desulfurization tower. According to an embodiment of the present invention, referring to fig. 1 and 2, the desulfurization tower includes: an annular housing 1; the desulfurizer bin 3 is formed between the 2 planar air permeable walls 2 and is used for containing a desulfurizer, a coal gas bin 4 is formed between the annular shell 1 and the planar air permeable walls 2, the coal gas bin is provided with a horizontal baffle 5 in the height direction, and the horizontal baffle 5 divides the coal gas bin 4 into a plurality of sub coal gas bins; the feed inlet 8 is formed in the top of the desulfurizer bin 3, and the feed inlet 8 is formed in the bottom of the desulfurizer bin 3; the discharge port 9 is arranged at the bottom of the desulfurizer bin 3, and the discharge port 9 is arranged at the bottom of the desulfurizer bin 3; the coal gas inlets 6 are arranged on one side of the annular shell 1, and at least one coal gas inlet 6 is arranged on the shell 1 corresponding to each sub coal gas bin; the coal gas outlets 7 are arranged on the other side of the annular shell 1, and at least one coal gas outlet 7 is arranged on the shell 1 corresponding to each sub coal gas bin. Therefore, firstly, feeding is carried out through a feeding hole 8 arranged at the top of the desulfurizer bin 3, discharging is carried out through a discharging hole 9 arranged at the bottom of the desulfurizer bin 3, the desulfurizer bin 3 is of an up-and-down through structure, the desulfurizer is discharged through vertical gravity, manual canning, material cleaning and material distribution are not needed, the manual labor intensity is low, the material changing efficiency is high, the up-and-down structures of the desulfurizer bin are all simulated through particle flow, the hidden danger of all flowing dead angles is eliminated, and the particles can smoothly flow downwards; secondly, in order to ensure that all desulfurizer filling surfaces are uniformly distributed with gas, the gas bin 4 is divided into a plurality of sub gas bins through the baffle 5 after flow field simulation, the sub gas bins are arranged, the gas distribution control is more visual and accurate, the gas flow field is optimized, the utilization rate of the desulfurizer is improved, and the problems of low utilization rate of the desulfurizer and local hardening of the desulfurizer caused by gas bias flow are solved; thirdly, the gas paths are transversely arranged, so that the reaction contact area is increased, the gas flow rate is reduced, and the gas running resistance is reduced; fourthly, the gas bin 4 and the desulfurizer bin 3 are divided by the gas permeable wall 2, so that the uniform and controllable contact of gas with a desulfurizer is ensured, and the smooth movement of the desulfurizer during discharging can be ensured; fifthly, the desulfurizing tower has a vertical structure, occupies a small area, saves the field and is more suitable for transforming or replacing narrow spaces of projects.

The desulfurization tower according to an embodiment of the present invention is further described in detail below.

In the embodiment of the utility model, the 2 planar air permeable walls 2 are vertically arranged on the inner side of the annular shell 1, a desulfurizer bin 3 which is communicated up and down is formed between the 2 planar air permeable walls 2, a coal gas bin 4 is formed between the annular shell 1 and the planar air permeable walls 2, wherein the coal gas bin area close to a coal gas inlet is a raw coal gas distribution chamber, and the coal gas bin area close to a coal gas outlet is a clean coal gas confluence chamber. That is to say, the space enclosed by the annular shell is divided into three parts by the two plane air permeable walls, namely a raw gas distribution chamber, a desulfurizer bin and a clean gas converging chamber. The desulfurizer bin is communicated up and down, and the raw gas distribution chamber and the clean gas converging chamber are divided into a plurality of sub-gas bins by horizontal clapboards according to height; each sub-gas bin corresponds to a set of independent gas inlet, raw gas distribution chamber, clean gas convergence chamber and gas outlet.

According to a specific embodiment of the utility model, the section of the annular shell 1 along the horizontal direction is circular or polygonal, the annular shell 1 forms a shell of the desulfurization tower, preferably circular, and the shell with the circular section has the advantage of high pressure resistance because the pressure of the blast furnace gas can reach 0.2-0.3 MPa generally, and can meet the high-pressure use condition.

According to a further embodiment of the present invention, the planar gas permeable wall 2 is a louver wall or a grid wall, preferably a louver wall, and the louver wall can be used for optimizing the flow direction of the gas, and can also be used as a gas permeable wall support framework and a desulfurizer falling guide plate.

According to another embodiment of the present invention, the ratio of the height of the sub-gas bins to the inner diameter of the desulfurization tower is 1.2-1.5, so that the ratio of the height of the sub-gas bins to the inner diameter of the desulfurization tower is limited in the above range, which further facilitates the uniform gas distribution of the gas to be desulfurized, optimizes the gas flow field, and avoids the gas flowing eccentrically in the desulfurizer bin. The utility model discloses the people discover, if the ratio of the height in sub-coal gas storehouse and the internal diameter of desulfurizing tower surpasss 1.2-1.5, then lead to coal gas in height and width scope air current distribution difference to be greater than 1.15, can cause coal gas to bias flow in desulfurizer storehouse.

According to another embodiment of the present invention, the width of the desulfurizing agent bin 3 is 0.4-0.6 times of the inner diameter of the desulfurizing tower, so that the width of the desulfurizing agent bin 3 is limited within the above range, which not only ensures the residence time of the coal gas in the desulfurizing agent bin within a high-efficiency range, but also effectively controls the resistance of the coal gas passing through the desulfurizing agent layer not to be too large.

In the embodiment of the utility model, in order to ensure uniform gas distribution of all desulfurizer filling surfaces, after flow field simulation, the gas bin 4 is divided into a plurality of sub gas bins by the baffle 5, the sub gas bins are arranged, gas is divided into bins for processing, the number of the sub gas bins is not particularly limited, and the sub gas bins can be randomly selected by persons in the field according to actual needs as long as uniform gas distribution of all desulfurizer filling surfaces can be ensured, and as a preferred scheme, the number of the sub gas bins is 2-5.

Further, referring to fig. 1 and 2, the desulfurization tower further includes: a first flow regulator 10, said first flow regulator 10 being disposed within said gas silo at said gas inlet 6, said first flow regulator 10 comprising a first constriction 10-1 and a first flared opening 10-2, said first constriction 10-1 being disposed proximate to said gas inlet 6 and said first flared opening 10-2 being disposed distal to said gas inlet 6. The first damper 10 functions as: the gas to be desulfurized enters the first necking 10-1 through the gas inlet 6, and the gas to be desulfurized is diffused through the first flaring 10-2, so that the uniform gas distribution of the gas to be desulfurized is further facilitated, the gas flow field is optimized, the utilization rate of a desulfurizer is improved, and the problems of low utilization rate of the desulfurizer and local hardening of the desulfurizer caused by bias flow of the gas are solved.

Further, referring to fig. 1 and 2, the desulfurization tower further includes: a second damper 11, said second damper 11 being arranged in said gas silo at said gas outlet 7, said second damper 11 comprising a second constriction and a second flaring, said second constriction being arranged close to said gas outlet 7 and said second flaring being arranged remote from said gas outlet 7. The function of the second airflow regulator 11 is opposite to that of the first airflow regulator 10, the desulfurized coal gas is concentrated to the second necking through the second flaring and then discharged out of the desulfurization tower through the coal gas outlet 7, and the desulfurized coal gas is concentrated to the coal gas outlet 7 through the function of the second airflow regulator 11, so that the desulfurized coal gas is further favorably discharged, and the desulfurization efficiency is further improved. The second damper 11 is similar in shape to the first damper 10, but is positioned differently.

Further, referring to fig. 1, the desulfurization tower further comprises: a base 12, the base 12 sets up the bottom of desulfurizing tower, the base 12 is used for bearing the weight of the desulfurizing tower body.

For convenience of understanding, the method of desulfurization using the desulfurization tower of the above embodiment is explained in detail below, and includes:

(1) the desulfurizer enters the desulfurizer bin 3 through the feed inlet 8;

in this step, the desulfurizer gets into desulfurizer storehouse 3 in through feed inlet 8, fills up desulfurizer storehouse 3, and desulfurizer storehouse 3 is the structure that link up from top to bottom, and the desulfurizer passes through vertical gravity blanking, does not need the manual work to go into the jar clear material and cloth, and artifical intensity of labour is little, and the reloading is efficient. An electric crane is arranged at the top of the desulfurizing tower, and the new desulfurizing agent granules are lifted to a feed inlet 8 at the top of the desulfurizing tower in a ton bag mode and enter a desulfurizing agent bin 3 through the feed inlet 8.

(2) Gas to be desulfurized sequentially enters a gas bin 4 area close to the gas inlet 6 and a desulfurizer bin 3 through a gas inlet 6, and the gas to be desulfurized is desulfurized under the action of a desulfurizer in the desulfurizer bin 3;

in the step, the gas bin 4 is divided into a plurality of sub gas bins by the baffle 5, at least one gas inlet 6 is arranged on the shell 1 corresponding to each sub gas bin, correspondingly, at least one gas outlet 7 is arranged on the shell 1 corresponding to each sub gas bin, and the gas inlet 6 and the gas outlet 7 are arranged oppositely. And the coal gas to be desulfurized sequentially enters the sub coal gas bin areas close to the coal gas inlets 6 through the coal gas inlets 6 and then enters the desulfurizer bin 3, and the coal gas to be desulfurized is desulfurized under the action of a desulfurizer in the desulfurizer bin 3. The desulfurizer is selected more, the particle size range is preferably 10mm-70mm, the shape can be columnar, spherical, honeycomb, cubic and the like, chemical adsorption reaction, chemical catalytic reaction or physical adsorption reaction can occur between the coal gas to be desulfurized and the desulfurizer, and related contents of the desulfurizer belong to the prior art in the field and are not described herein again.

(3) And the gas after desulfurization flows out of the desulfurization tower through the region of the gas bin 4 close to the gas outlet 7 and the gas outlet 7 in sequence.

In this step, the desulfurized gas flows out of the desulfurization tower sequentially through each sub-gas bin region close to the gas outlet 7 and the respective gas outlet 7. When the desulfurizer is used for a period of time and loses efficacy, a new desulfurizer needs to be replaced, the discharge port 9 needs to be opened at the moment, the desulfurizer is discharged through vertical gravity due to the fact that the desulfurizer bin 3 is of an up-and-down through structure, loading/unloading is fully mechanized and automatic, manual canning material cleaning and distributing are not needed, manual labor intensity is low, and material replacement efficiency is high. The bottom of the desulfurization tower is matched with a ton bag packaging machine connector and a blanking vibration device, so that the unloading is rapid and efficient.

According to the desulfurization method provided by the embodiment of the utility model, firstly, feeding is carried out through the feeding hole 8 arranged at the top of the desulfurizer bin 3, discharging is carried out through the discharging hole 9 arranged at the bottom of the desulfurizer bin 3, the desulfurizer bin 3 is in a vertically through structure, the desulfurizer is discharged through vertical gravity, manual canning for material cleaning and distribution is not needed, the manual labor intensity is low, and the material changing efficiency is high; secondly, in order to ensure that all desulfurizer filling surfaces are uniformly distributed with gas, the coal gas bin 4 is divided into a plurality of sub coal gas bins by the baffle 5 after flow field simulation, and the sub coal gas bins are arranged in a sub-bin manner, so that gas distribution control is more visual and accurate, a gas flow field is optimized, the utilization rate of a desulfurizer is improved, and the problems of low utilization rate of the desulfurizer and local hardening of the desulfurizer caused by gas bias flow are solved; thirdly, the gas path is transversely arranged, so that the reaction contact area is increased, the gas flow rate is reduced, and the gas running resistance is reduced; fourthly, the gas bin 4 and the desulfurizer bin 3 are divided by the gas permeable wall 2, so that the uniform and controllable contact of gas with a desulfurizer is ensured, and the smooth movement of the desulfurizer during discharging can be ensured; fifthly, the desulfurizing tower has a vertical structure, occupies a small area, and is more suitable for transforming or replacing narrow spaces of projects.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A desulfurization tower, comprising:

an annular housing;

the feed inlet is formed in the top of the desulfurizer bin;

the discharge port is arranged at the bottom of the desulfurizer bin;

2. The desulfurization tower of claim 1, further comprising: a first flow regulator disposed within the gas silo at the gas inlet, the first flow regulator including a first throat disposed proximate the gas inlet and a first flared mouth disposed distal to the gas inlet.

3. The desulfurization tower of claim 1, further comprising: a second flow regulator disposed within the gas silo at the gas outlet, the second flow regulator including a second throat disposed proximate the gas outlet and a second flared mouth disposed distal the gas outlet.

4. The desulfurization tower of claim 1, further comprising: the base, the base sets up the bottom of desulfurizing tower.

5. The desulfurization tower of any one of claims 1 to 4, wherein the annular housing has a circular or polygonal cross section in the horizontal direction.

6. Desulfurization tower according to any one of claims 1-4, characterized in that said planar gas permeable walls are louver walls or grid walls.

7. The desulfurization tower of any one of claims 1 to 4, wherein the width of the desulfurization agent compartment is 0.4 to 0.6 times the inner diameter of the desulfurization tower.

8. The desulfurization tower of any one of claims 1 to 4, wherein the number of the sub-gas silos is 2 to 5.