CN215593008U

CN215593008U - Gas dry dust-removing device

Info

Publication number: CN215593008U
Application number: CN202121772104.6U
Authority: CN
Inventors: 贾彩清; 陆大章; 万春梅
Original assignee: CISDI Research and Development Co Ltd
Current assignee: CISDI Research and Development Co Ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-01-21
Anticipated expiration: 2031-07-30

Abstract

The utility model provides a gas dry-method dust removal device, which comprises a cylinder body, wherein a gas inlet is formed in the lower part of the cylinder body, a gas outlet is formed in the upper part of the cylinder body, the gas inlet direction of the gas inlet is arranged along the radial direction of the cylinder body, at least two subareas are arranged on the cross section of the cylinder body from near to far along the gas inlet direction of gas, a filter cylinder is arranged in each subarea, and the filter cylinder is positioned below the gas outlet; the length, the diameter or the number of the filter cylinders of each subarea are different, and the gas filtering capacity of each subarea increases along the gas inlet direction of the gas inlet area by area. According to the difference of the flow and the flow velocity of different positions of the gas entering the cylinder, the cylinder is correspondingly and transversely divided into a plurality of subareas along the gas carrying direction, each subarea is provided with a filter cylinder, the gas filtering capacity of each subarea is sequentially increased, the matching of the processing capacity of each subarea with the gas flow and the flow velocity is realized, and the flow equalization of the processed clean gas is realized.

Description

Gas dry dust-removing device

Technical Field

The utility model belongs to the technical field of coal gas dust removal, and particularly relates to a coal gas dry-method dust removal device.

Background

Blast furnace gas is an acidic corrosive gas containing dust and gaseous impurities, such as oil, chlorine, sulfur and other impurities; the dust is removed by a dust removal system, and the dust is conveyed to a user after impurities are removed. In the prior art, dust is removed by a blast furnace gas dry dust removal device, and then impurities such as chlorine, sulfur and the like are removed by a dechlorination device and a hydrolysis desulfurization device which are separately arranged at the downstream.

However, in the prior art, the gas does not uniformly pass through the filter cartridge in the dust removing device, usually enters from the side surface of the dust removing device, the position close to the gas inlet is a leeward area with low flow rate and low flow rate, the position far away from the gas inlet is a windward area with high flow rate and high flow rate, the flow rate and the flow rate of the gas at different positions have differences, different treatment amounts need to be matched, and if the filter cartridge is uniformly arranged, self-flow equalization, self-adaptation and better treatment efficiency cannot be achieved. The common way is to arrange a flow equalizing device in a certain height range of the inlet section of the cylinder body, and the structure is complex.

SUMMERY OF THE UTILITY MODEL

In view of the defects of the prior art, the utility model aims to provide a gas dry-method dust removal device, which improves the self-flow-equalizing and self-adapting effects of gas entering a cylinder, improves the overall efficiency of the device and prolongs the service life of the device.

In order to achieve the above and other related objects, the present invention provides a gas dry dedusting device, which comprises a cylinder, wherein a gas inlet is arranged at the lower part of the cylinder, a gas outlet is arranged at the upper part of the cylinder, the gas inlet direction of the gas inlet is along the radial direction of the cylinder, at least two zones are arranged on the cross section of the cylinder from near to far along the gas inlet direction of the gas, a filter cartridge is arranged in each zone, and the filter cartridge is positioned below the gas outlet; the length, the diameter or the number of the filter cylinders of each subarea are different, and the gas filtering capacity of each subarea increases along the gas inlet direction of the gas inlet area by area.

Optionally, the length of the filter cartridge increases from the section closest to the gas inlet to the section farthest from the gas inlet along the gas inlet direction.

Optionally, the diameter of the filter cartridge increases from the section closest to the gas inlet to the section farthest from the gas inlet along the gas inlet direction.

Optionally, the number of the filter cartridges increases from the section closest to the gas inlet to the section farthest from the gas inlet along the gas inlet direction.

Optionally, the filter cartridge is of an inverted cone structure which is tapered from top to bottom, or the filter cartridge is of a cylindrical structure.

Optionally, the upper end of the filter cylinder of each subarea is flush, and the height of the lower end of the filter cylinder decreases from subarea to subarea along the gas inlet direction.

Optionally, on the cross section of the cylinder body, the centers of the filter cartridges of the partitions are distributed on the same circular arc with the center of the gas inlet as the center.

Optionally, the cross section of the cylinder body is divided into three zones along the gas inlet direction, and the radial distance ratio of the farthest boundary of each zone to the center of the gas inlet is 1:2-2.5: 4-4.5.

Optionally, a support plate is arranged in the cylinder, a gas collection chamber is defined between the support plate and the top of the cylinder, the gas collection chamber is communicated with the gas outlet, the support plate separates gas before and after purification, the upper end of the filter cylinder is arranged on the support plate, and the support plate is provided with an opening corresponding to the gas outlet at the upper end of the filter cylinder.

Optionally, a limiting structure is arranged on the inner wall of the cylinder, a limiting part is arranged at the lower end of the filter cylinder, a limiting groove is formed in one of the limiting structure and the limiting part, a limiting pin is vertically arranged in the other limiting structure, and the limiting pin extends into the limiting groove to limit the transverse swing range of the filter cylinder.

Optionally, the coal gas dry dust removal device further comprises an injection dust removal device, the injection dust removal device comprises a gas supply device, an injection main pipe and an injection branch pipe, the injection branch pipe is of an inverted cone-shaped structure with a thick upper part and a thin lower part, a plurality of injection ports are formed in the side surface of the injection branch pipe, and the injection branch pipe extends into the filter cylinder.

Optionally, the blowing openings are trumpet-shaped, and the blowing openings on the same blowing branch pipe are the same in size.

As described above, the present invention has the following advantageous effects: by adopting the structure, the cylinder body is correspondingly transversely divided into a plurality of subareas along the coal gas carrying direction according to the different positions, the flow rates and the flow velocities of the coal gas after entering the cylinder body, the filter cylinder is arranged in each subarea, the coal gas filtering capacity of each subarea is sequentially increased, the matching of the processing capacity of each subarea with the coal gas flow rate and the flow velocity is realized, and the self-flow equalization, the self-adaptation and the better processing efficiency are achieved.

Drawings

FIG. 1 is a schematic diagram of an embodiment;

FIG. 2 is a view A-A of FIG. 1;

FIG. 3 is a schematic view of a partition on a cross section of a barrel;

FIG. 4 is a schematic structural diagram of another embodiment;

FIG. 5 is an enlarged view of a portion of FIG. 4;

FIG. 6 is a schematic structural diagram of yet another embodiment;

FIG. 7 is a schematic structural diagram of another embodiment.

Part number description:

1-a filter cartridge; 2-a support plate; 3-a cylinder body; 3 a-a first partition; 3 b-a second partition; 3 c-a third partition; 31-gas inlet; 32-gas outlet; 33-gas collection chamber; 34-an ash collecting hopper; 41-a limiting structure; 42-a limit pin; 43-a limit groove; 5-blowing ash removal device; 51-a header pipe; 52-branch pipe; 53-blowing ports.

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.

Example 1

As shown in fig. 1 to 3, the gas dry dedusting device is used for gas dedusting, and comprises a cylinder 3, wherein a gas inlet 31 is arranged on the side surface of the lower part of the cylinder 3, the gas inlet 31 is connected with an inlet pipeline, a gas outlet 32 is arranged on the upper part of the cylinder 3, the gas outlet 32 is connected with an outlet pipeline, a plurality of filter cartridges 1 are transversely arranged in the cylinder 3 side by side, the filter cartridges 1 are positioned below the gas outlet 32 and on the upper side of the gas inlet 31; wherein, the upper part of the cylinder 3 is provided with a gas collecting chamber 33, the gas collecting chamber 33 is positioned above the filter cartridge 1 and is communicated with the gas outlet 32; the gas inlet is arranged on the outer peripheral side of the filter cartridge 1 during gas purification, the lower end of the filter cartridge 1 is closed, the upper end of the filter cartridge 1 is provided with a gas outlet after gas purification, and the gas outlet is communicated with the gas collecting chamber 33. When the coal gas purifier is used, unpurified coal gas is fed from the coal gas inlet 31, flows upwards in the cylinder 3, is dedusted and filtered by the filter cartridge 1 to obtain purified coal gas, enters the coal gas collecting chamber 33 and is discharged through the coal gas outlet 32 for a user to use, and the bottom of the cylinder 3 is provided with the ash collecting hopper 34, the ash discharging port and the like for cleaning collected dust.

The key point is that at least two partitions are divided from near to far along the gas inlet direction of the gas on the cross section of the cylinder (namely at least two partitions are arranged from the position close to the gas inlet 31 to the position far away from the gas inlet 31), the gas inlet direction is along the radial direction of the cylinder, one or more filter cartridges are arranged in each partition, and the filter cartridges are positioned below the gas outlet; at least one of the length, diameter or number of the filter cartridges of each section is set to be different so that the gas filtering capacity of each section increases zone by zone along the gas inlet direction.

By adopting the structure, the cylinder body is correspondingly transversely divided into a plurality of subareas along the coal gas carrying direction according to the different positions, the flow rates and the flow velocities of the coal gas after entering the cylinder body, the filter cylinder is arranged in each subarea, the coal gas filtering capacity of each subarea is sequentially increased, the matching of the processing capacity of each subarea with the coal gas flow rate and the flow velocity is realized, and the self-flow equalization, the self-adaptation and the better processing efficiency are achieved.

In one embodiment, a support plate 2 is arranged in the cylinder 3, a gas collecting chamber 33 is enclosed between the support plate 2 and the top of the cylinder 3, the support plate 2 separates the gas before and after purification to play a role in sealing and prevent the gas which is not purified from escaping, the upper end of the filter cartridge 1 is arranged on the support plate 2, and the support plate 2 is provided with an opening corresponding to the upper end of the inner sleeve of the filter cartridge 1.

In this case, the length of the filter cartridge increases from the section closest to the gas inlet to the section farthest from the gas inlet in the gas inlet direction. As shown in fig. 2 and 3, the partition is divided into a plurality of partitions, in this example, 3 partitions, from the near to the far in the direction indicated by the arrow, and in other embodiments, the number of partitions may be increased or decreased according to the size of the cylinder 3. A plurality of subareas are arranged according to the plane radial distance range from the air inlet of the cylinder 3, and the area of the first subarea, which is closest to the coal gas inlet 31, is a low-flow-rate and low-flow leeward area and is shortest in length matched with the filter cartridge 1; the last area, the high-flow-rate and high-flow windward area farthest from the gas inlet 31, is matched with the longest filter cartridge 1; namely the area between the first zone and the last zone, the length of the filter cartridge 1 is between the first zone and the last zone, and the length of the filter cartridge 1 is increased zone by zone, so that the first-stage automatic distribution of the gas flow is realized.

In this embodiment, three sections are taken as an example, and the length of the filter cartridge 1 is gradually increased from the first section 3a closest to the gas inlet 31 to the third section 3c farthest from the gas inlet 31, which are sequentially divided into the first section 3a, the second section 3b and the third section 3c along the gas inlet direction. As shown in fig. 1, the length of the first section 3a cartridge 1 is smaller than that of the second section 3b cartridge 1, and the length of the second section 3b cartridge 1 is smaller than that of the third section 3c cartridge 1, and the number of the cartridges 1 in each section may be equal or different, for example, may be increased in sequence.

The clean gas after the fine dust removal by the filter cartridges 1 is gathered in the gas collection chamber, so that the flow rate of the gas passing through each filter cartridge 1 is basically equivalent, the service life of each filter cartridge 1 is ensured to be basically consistent, and the maintenance is convenient. Meanwhile, the airflow can be gradually diffused in a buffer range formed by the height difference of the filter cylinder 1, and the flow equalizing device is self-flow equalizing and self-adapting without being additionally arranged.

In this embodiment, the filter cartridge 1 has an inverted cone-shaped structure that is tapered from top to bottom, and the area of the outer peripheral side of the filter cartridge 1 is increased, so that the dust removal efficiency can be increased, and the air flow can be buffered by the tapered surface.

In this example, the upper ends of the filter cartridges 1 are flush, and the height of the lower end of the filter cartridge 1 decreases progressively along the gas inlet direction. The structure facilitates uniform installation of the filter cartridges 1, the filter cartridges 1 arranged in areas with larger flow velocity and flow are longer, the flow velocity can be reduced, the filtering area is increased, and the filter cartridges 1 arranged in areas with smaller flow velocity and flow are shorter, so that the flow equalizing effect of coal gas in each area is realized.

In another embodiment, the diameter of the filter cartridge 1 is the same for each section, and the number of sections is different, for example, the number may be increased sequentially.

In this embodiment, the diameter of the cartridge 1 is also increased zone by zone, i.e. the diameter of the cartridge 1 in the second zone 3b is greater than the diameter of the cartridge 1 in the first zone 3a, and the diameter of the cartridge 1 in the third zone 3c is greater than the diameter of the cartridge 1 in the second zone 3 b. In other embodiments, the filter cartridges 1 in each zone have the same diameter and different lengths.

As further shown in fig. 7, in the cross section of the cylinder 3, the centers of the filter cartridges 1 of the respective partitions are distributed on the same circular arc centered on the center O of the gas inlet 31 as shown by the two-dot chain line in the figure so as to correspond to the form of diffusion of the gas into the cylinder 3.

As shown in fig. 3, the cross section of the cylinder 3 is divided into three zones along the gas inlet direction, and the radial distance ratio of the farthest boundary of each zone to the center of the gas inlet 31 is D1: D2: D3: 1:2-2.5:4-4.5, so as to reasonably plan the range of each zone.

Example 2

As shown in fig. 4 and 5, since the lower end of the filter cartridge 1 has no supporting structure, the filter cartridge may shake due to long length or influence of air flow, and affect the gas treatment effect, on the basis of embodiment 1 or 2, in this example, a limiting structure 41 for limiting the lateral swing range of the filter cartridge 1 is provided, so as to control the radial movement range of the filter cartridge 1.

Specifically, as shown in fig. 5, the inner wall of the barrel 3 is provided with a limiting structure 41, the limiting structure 41 can be a limiting block, a limiting plate and the like, the lower end of the filter cartridge 1 is provided with a limiting part, a limiting groove 43 is formed in the limiting structure 41, the limiting part is a limiting pin 42 vertically arranged at the lower end of the filter cartridge 1, the limiting pin 42 extends into the limiting groove 43, and a transverse gap is formed between the limiting groove 43 and the limiting pin 42, so that the transverse swinging range of the filter cartridge 1 is limited by the limiting groove 43 and the limiting pin 42, and the structure is convenient to set and install, and the replacement of the adsorbent by the filter cartridge 1 is not affected.

According to the different heights of each subarea, the corresponding limiting structures 41 are arranged at different height positions, and the limiting structures 41 can adopt strip-shaped or frame structures, so that the blocking of coal gas is reduced.

Example 3

On the basis of the embodiment 1-2, in order to facilitate cleaning of dust on the outer sleeve of the filter cartridge 1 or cleaning of the adsorbent, the gas dry dust removal device further comprises an injection ash removal device 5, wherein the injection ash removal device 5 comprises a gas supply device (not shown), an injection main pipe 51 for air intake and an injection branch pipe 52 for reversely injecting the filter cartridge, the injection branch pipe 52 is of an inverted cone-shaped structure with a thick upper part and a thin lower part, the side surface of the injection branch pipe 52 is provided with a plurality of injection ports 53, and the injection branch pipe 52 extends into the filter cartridge. Each of the blowing legs 52 extends into the interior of the corresponding filter cartridge 1, i.e. in the inner sleeve 13, and the filter cartridge 1 is subjected to a back-blowing cleaning through the blowing openings 53, as shown in fig. 4 and 5.

The diameter of the blowing branch pipe 52 is gradually reduced from top to bottom along the axis, the air inlet end of the blowing branch pipe is a large-diameter end and is connected with the blowing main pipe 51, the air supply device of the main pipe 51 is communicated, and the end with the smallest section is closed (namely the lower end is closed); the blowing openings 53 have a gradually expanding trumpet-like structure, and the gradually expanding opening diameters of the side walls of each of the blowing branch pipes 52 are equal so that the airflow velocity and the flow rate of each blowing opening 53 are the same.

The diameters of the filter cartridges 1 are different, the sizes of the corresponding blowing branch pipes 52 are different, and the diameters of the blowing branch pipes 52 can be increased along with the increase of the diameters of the filter cartridges 1.

According to the working condition requirement of the dust removal device, the gas supply device can provide inert gas or clean coal gas for ash removal and superheated steam for cleaning pores on the surface of the adsorbent, and the inert gas or the clean coal gas and the superheated steam can be conveyed through different gas supply pipelines.

Example 4

As shown in fig. 6, the difference from example 1 is that the length of the filter cartridge 1 is the same in each partition, and the diameter of the filter cartridge 1 may be increased zone by zone, or the number of filter cartridges 1 may be increased zone by zone. And each filter cartridge 1 can share one limiting structure 61, thereby facilitating the arrangement of the structure.

Because the cross section of the cylinder 3 is sequentially divided into at least two subareas along the gas inlet direction, the length or the diameter of the filter cartridge 1 in each subarea is different, the length of the filter cartridge 1 is increased zone by zone and/or the diameter of the filter cartridge 1 is increased zone by zone, and the first-stage automatic distribution of the gas flow is realized. The purified gas after fine dust removal through the filter cartridges 1 is gathered in the gas collecting chamber 33 and then flows out, so that the second-stage automatic distribution of the gas flow is realized, the gas flow rate through each filter cartridge 1 is basically equivalent, the service life of each filter cartridge 1 is ensured to be basically consistent, and the maintenance is convenient. Meanwhile, the airflow can be gradually diffused in a buffer range formed by the height difference of the filter cylinder 1, and the flow equalizing device is self-flow equalizing and self-adapting without being additionally arranged. Dust filtered by the filter cartridge 1 can be cleaned by back-blowing, the gas inlet 31 is closed during dust cleaning, dust cleaning gas is blown to the inner cavity of the filter cartridge 1 through a back-blowing pipeline, the separation of the dust and the filter cartridge 1 is realized, and a control valve of a gas blowing device is closed after the dust cleaning is finished; the dust is collected in the bottom cone section of the cylinder 3 and is discharged after being accumulated to a certain material level.

Example 5

As shown in fig. 7, the difference from the above embodiment is that the filter cartridge 1 has a cylindrical structure, the length increases zone by zone, and the diameter of the filter cartridge 1 may be the same or may increase zone by zone.

For the occasion that the gas flow rate is not high or the requirement for uniform flow filtration is not high, the first-stage automatic distribution of the gas flow is realized through partitioning, the filtration requirement is met, and the processing and manufacturing difficulty can be properly reduced by adopting the cylindrical filter cylinder.

According to the utility model, the cylinder body is correspondingly transversely divided into a plurality of subareas along the gas carrying direction according to the different positions, flow rates and flow velocities of the gas entering the cylinder body, each subarea is provided with the filter cylinder, and the gas filtering capacities of the subareas are sequentially increased, so that the matching of the processing capacity of each subarea with the gas flow rate and the flow velocity is realized, and the self-flow equalization, the self-adaptation and the better processing efficiency are achieved.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. 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 coal gas dry process dust collector, includes the barrel, the lower part of barrel is provided with the coal gas import, and the upper portion of barrel is provided with coal gas export, its characterized in that: the gas inlet direction of the gas inlet is arranged along the radial direction of the cylinder body, at least two subareas are arranged on the cross section of the cylinder body from near to far along the gas inlet direction of the gas, a filter cylinder is arranged in each subarea, and the filter cylinder is positioned below the gas outlet; the length, the diameter or the number of the filter cylinders of each subarea are different, and the gas filtering capacity of each subarea increases along the gas inlet direction of the gas inlet area by area.

2. The gas dry dedusting device according to claim 1, characterized in that: along the gas inlet direction of the gas, the length of the filter cartridge increases gradually from the partition nearest to the gas inlet to the partition farthest to the gas inlet.

3. The gas dry dedusting device according to claim 1, characterized in that: along the gas inlet direction of the gas, the diameter of the filter cylinder increases gradually from the partition nearest to the gas inlet to the partition farthest to the gas inlet.

4. The gas dry dedusting device according to claim 1, characterized in that: along the gas inlet direction of the gas, the number of the filter cartridges increases gradually from the partition closest to the gas inlet to the partition farthest from the gas inlet.

5. The gas dry dedusting device according to any one of claims 1 to 4, characterized in that: the filter cylinder is of an inverted cone-shaped structure which is gradually thinned from top to bottom, or the filter cylinder is of a cylindrical structure.

6. The gas dry dedusting device according to claim 2, characterized in that: the upper ends of the filter cylinders of the subareas are parallel and level, and the height of the lower end of the filter cylinder is gradually reduced along the gas inlet direction.

7. The gas dry dedusting device according to claim 1, characterized in that: on the cross section of the cylinder body, the centers of the filter cylinders of the partitions are distributed on the same circular arc with the center of the gas inlet as the center of a circle.

8. The gas dry dedusting device according to claim 1, characterized in that: on the cross section of the cylinder body, the cylinder body is divided into three areas along the gas inlet direction, and the radial distance ratio of the farthest boundary of each subarea to the center of the gas inlet is 1:2-2.5: 4-4.5.

9. The gas dry dedusting device according to claim 1, characterized in that: the gas filter is characterized in that a support plate is arranged in the cylinder, a gas collecting chamber is enclosed between the support plate and the top of the cylinder and is communicated with a gas outlet, the support plate separates gas before and after purification, the upper end of the filter cylinder is arranged on the support plate, and the support plate is provided with an opening corresponding to a gas outlet at the upper end of the filter cylinder.

10. The gas dry dedusting device according to claim 1, characterized in that: the inner wall of the barrel is provided with a limiting structure, the lower end of the filter cylinder is provided with a limiting part, one of the limiting structure and the limiting part is provided with a limiting groove, the other one of the limiting structure and the limiting part is vertically provided with a limiting pin, and the limiting pin extends into the limiting groove to limit the transverse swing range of the filter cylinder.

11. The gas dry dedusting device according to claim 1, characterized in that: the coal gas dry-method dust removal device further comprises a blowing dust removal device, the blowing dust removal device comprises a gas supply device, a blowing main pipe and a blowing branch pipe, the blowing branch pipe is of an inverted cone-shaped structure with a thick upper part and a thin lower part, a plurality of blowing openings are formed in the side face of the blowing branch pipe, and the blowing branch pipe extends into the filter cylinder.

12. The gas dry dedusting device of claim 11, characterized in that: the blowing openings are trumpet-shaped, and the sizes of the blowing openings on the same blowing branch pipe are the same.