CN220432866U

CN220432866U - Blast furnace top gas recovery device with buffer structure

Info

Publication number: CN220432866U
Application number: CN202321504631.8U
Authority: CN
Inventors: 宋喜庆; 徐建军; 王文新; 堕忠林
Original assignee: Anyang Xinpu Iron And Steel Co ltd
Current assignee: Anyang Xinpu Iron And Steel Co ltd
Priority date: 2023-06-13
Filing date: 2023-06-13
Publication date: 2024-02-02
Anticipated expiration: 2033-06-13

Abstract

The utility model discloses a blast furnace top gas recovery device with a buffer structure, which comprises a support plate, wherein a first top plate is fixed at the top of a cloth bag filter through a first bolt, a first filter screen is fixed at the bottom of the first top plate, the first filter screen is connected to the inner bottom of the cloth bag filter in a closing way, a purifying mechanism is fixed at the other side of the upper end surface of the support plate, and the head end of the purifying mechanism is connected with the cloth bag filter. This blast furnace top gas recovery unit with buffer structure, buffer tank can be used to retrieve the pressure-equalizing gas naturally, and after the pressure in the buffer tank reached the setting value, the nitrogen gas that draws forth from the nitrogen gas jar can drive into natural recovery unit with the surplus pressure-equalizing gas in the material jar and retrieve further, and after the pressure-equalizing gas in the material jar was driven, cut off recovery system, conveniently realize forcing recovery, the setting of buffer tank has reduced pressure periodic fluctuation, and sack filter and second filter screen can carry out filtration treatment to gas, convenient recovery.

Description

Blast furnace top gas recovery device with buffer structure

Technical Field

The utility model relates to the technical field of blast furnace top gas recovery, in particular to a blast furnace top gas recovery device with a buffer structure.

Background

At present, the increasingly improved environmental protection requirements are that the recovery of the equalizing gas at the top of the blast furnace is an effective measure for solving the pollution of toxic gas and dust and recovering energy, and has profound significance for the development of recycling economy.

The existing blast furnace top gas recovery device is generally not provided with a buffer mechanism, the pressure of the naturally recovered equalizing gas is close to the pressure of the clean gas main pipe, and the impact on the clean gas main pipe is relatively large, so the blast furnace top gas recovery device with the buffer mechanism is provided to solve the problems.

Disclosure of Invention

The utility model aims to provide a blast furnace top gas recovery device with a buffer structure, which aims to solve the problems that the existing blast furnace top gas recovery device is generally not provided with a buffer mechanism, the pressure of the naturally recovered equalizing gas is close to the pressure of a clean gas main pipe, and the impact on the clean gas main pipe is relatively large.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a blast furnace top gas recovery unit with buffer structure, includes the extension board, the bottom of extension board is fixed with the support, one side of extension board up end is fixed with the nitrogen jar, the front side of nitrogen jar is fixed with the admission valve, the centre department of extension board up end is fixed with buffer tank and sack filter, the buffer tank is connected with the sack filter through the third connecting tube, the top of sack filter is fixed with first roof through first bolt, the bottom of first roof is fixed with first filter screen, first filter screen close to be connected at the interior bottom of sack filter, the opposite side of extension board up end is fixed with purifying mechanism, purifying mechanism's head end is connected with the sack filter.

Preferably, a gas pipeline is fixed on one side of the buffer tank, a recovery valve is fixed in the gas pipeline, the gas pipeline penetrates through the support plate and is connected with the second connecting pipeline, and a pressure sensor is fixed at the inner bottom of the buffer tank.

Through the technical scheme, the pressure sensor can detect the pressure in the buffer tank.

Preferably, the purifying mechanism comprises an exhaust pipeline and a bearing box, the exhaust pipeline is fixed on one side of the cloth bag filter, a check valve is fixed in the exhaust pipeline, the bearing box is fixed on the other side of the upper end face of the support plate, the exhaust pipeline extends into the bearing box, and an exhaust hole is formed in the exhaust pipeline.

Through the technical scheme, the gas can be discharged into the bearing box through the gas exhaust hole, and the second filter screen can carry out secondary filtration treatment on the gas.

Preferably, the second filter screen is connected to the inner bottom of the bearing box in a clamping way, the second filter screen is of an annular structure, a second top plate is fixed to the top of the second filter screen, the second top plate is fixed to the top of the bearing box through a second bolt, and an exhaust channel is fixed to one side of the bearing box.

Through above-mentioned technical scheme, annular second filter screen filter effect is better.

Preferably, an air pump is fixed at the inner bottom of the nitrogen tank, an air transmission pipeline is fixed at the bottom of the air pump, a nitrogen shut-off valve is fixed in the air transmission pipeline, and the air transmission pipeline penetrates through the bottom of the nitrogen tank and the support plate and is connected with the first connecting pipeline.

Through the technical scheme, the air pump can pump nitrogen in the nitrogen tank into the charging bucket.

Preferably, the first filter screens are distributed on the first top plate at equal intervals.

Through the technical scheme, the first filter screen can carry out one-time filtration treatment on coal gas.

Compared with the prior art, the utility model has the beneficial effects that: this blast furnace top gas recovery unit with buffer structure, buffer tank can be used to retrieve the pressure-equalizing gas naturally, and after the pressure in the buffer tank reached the setting value, the nitrogen gas that draws forth from the nitrogen gas jar can drive into natural recovery unit with the surplus pressure-equalizing gas in the material jar and retrieve further, and after the pressure-equalizing gas in the material jar was driven, cut off recovery system, conveniently realize forcing recovery, the setting of buffer tank has reduced pressure periodic fluctuation, and sack filter and second filter screen can carry out filtration treatment to gas, convenient recovery.

Drawings

FIG. 1 is a schematic diagram of a front cross-sectional structure of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a schematic view showing the connection structure of the exhaust pipe, the check valve and the exhaust hole according to the present utility model.

In the figure: 1. a support plate; 2. a bracket; 3. a nitrogen tank; 4. an intake valve; 5. an air pump; 6. a gas line; 7. a nitrogen shut-off valve; 8. a first connecting pipe; 9. a buffer tank; 10. a gas pipe; 11. a recovery valve; 12. a second connecting pipe; 13. a pressure sensor; 14. a third connecting pipe; 15. a cloth bag filter; 16. a first top plate; 17. a first bolt; 18. a first filter screen; 19. a purifying mechanism; 1901. an exhaust duct; 1902. a check valve; 1903. a carrying case; 1904. an exhaust hole; 1905. a second filter screen; 1906. a second top plate; 1907. a second bolt; 1908. an exhaust passage.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides a technical solution: the utility model relates to a blast furnace top gas recovery device with a buffer structure, which is shown in fig. 1, and comprises a support plate 1, wherein a support frame 2 is fixed at the bottom of the support plate 1, a nitrogen tank 3 is fixed at one side of the upper end surface of the support plate 1, an air inlet valve 4 is fixed at the front side of the nitrogen tank 3, an air pump 5 is fixed at the inner bottom of the nitrogen tank 3, an air pipeline 6 is fixed at the bottom of the air pump 5, a nitrogen shut-off valve 7 is fixed in the air pipeline 6, the air pipeline 6 penetrates through the bottom of the nitrogen tank 3 and the support plate 1 and is connected with a first connecting pipeline 8, the first connecting pipeline 8 is required to be installed on a material tank before the device is used, and after the pressure in the buffer tank 9 reaches a set value, nitrogen in the nitrogen tank 3 can enter the nitrogen tank 3 through the air pipeline 6 and the first connecting pipeline 8 in sequence under the action of the air pump 5, so that residual gas in the material tank can be conveniently driven into the buffer tank 9 for further recovery.

As shown in fig. 1 and 2, a buffer tank 9 and a cloth bag filter 15 are fixed in the middle of the upper end surface of the support plate 1, a gas pipeline 10 is fixed at one side of the buffer tank 9, a recovery valve 11 is fixed in the gas pipeline 10, the gas pipeline 10 penetrates through the support plate 1 and is connected with a second connecting pipeline 12, a pressure sensor 13 is fixed at the inner bottom of the buffer tank 9, the second connecting pipeline 12 is required to be installed on the material tank before the device is used, after the recovery valve 11 is opened, pressure equalizing gas discharged from the material tank can sequentially enter the buffer tank 9 through the second connecting pipeline 12 and the gas pipeline 10, the pressure sensor 13 can detect the pressure in the buffer tank 9, and after the pressure in the buffer tank 9 reaches a set value, residual equalizing gas in the material tank can be driven into the buffer tank 9 by nitrogen in the nitrogen tank 3 for further recovery.

As shown in fig. 1 and 2, the buffer tank 9 is connected with the cloth bag filter 15 through the third connecting pipeline 14, the top of the cloth bag filter 15 is fixed with the first top plate 16 through the first bolt 17, the bottom of the first top plate 16 is fixed with the first filter screen 18, the first filter screen 18 is connected to the inner bottom of the cloth bag filter 15 in a clamping way, the first filter screens 18 are distributed on the first top plate 16 at equal intervals, the first filter screen 18 can perform primary filtering treatment on the equalizing gas, and the first filter screens 18 distributed at equal intervals can enable the filtering effect to be more thorough and efficient.

As shown in fig. 1, fig. 2 and fig. 3, a purifying mechanism 19 is fixed on the other side of the upper end surface of the support plate 1, the head end of the purifying mechanism 19 is connected with a cloth bag filter 15, the purifying mechanism 19 comprises an exhaust pipeline 1901 and a bearing box 1903, the exhaust pipeline 1901 is fixed on one side of the cloth bag filter 15, a check valve 1902 is fixed in the exhaust pipeline 1901, the bearing box 1903 is fixed on the other side of the upper end surface of the support plate 1, the exhaust pipeline 1901 extends into the bearing box 1903, an exhaust hole 1904 is formed in the exhaust pipeline 1901, after the pressure equalizing gas enters the exhaust pipeline 1901, the pressure equalizing gas is discharged into the bearing box 1903 through the exhaust hole 1904, and the second filter screen 1905 can perform secondary filtering treatment on the pressure equalizing gas.

Further, the second filter screen 1905 is connected to the inner bottom of the bearing box 1903 in a clamping manner, the second filter screen 1905 is of an annular structure, the second top plate 1906 is fixed to the top of the second filter screen 1905, the second top plate 1906 is fixed to the top of the bearing box 1903 through the second bolt 1907, an exhaust channel 1908 is fixed to one side of the bearing box 1903, the second filter screen 1905 can carry out secondary filtering treatment on the equalizing gas, the second top plate 1906 and the second filter screen 1905 can be integrally detached after the second bolt 1907 is unscrewed, and the second filter screen 1905 is convenient to clean or replace.

When the pressure sensor 13 detects that the pressure in the nitrogen tank 3 reaches a set value, nitrogen in the nitrogen tank 3 can be pumped into the tank by the air pump 5, residual pressure-equalizing gas in the tank is driven into the buffer tank 9 by the nitrogen for further recovery, and after the pressure-equalizing gas in the tank is driven out, the nitrogen cut-off valve 7 cuts off the recovery system.

The terms "center," "longitudinal," "transverse," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for descriptive simplicity and convenience only and not as an indication or implying that the apparatus or element being referred to must have a particular orientation, be constructed and operated for a particular orientation, based on the orientation or positional relationship illustrated in the drawings, and thus should not be construed as limiting the scope of the present utility model.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a blast furnace top gas recovery unit with buffer structure, includes extension board (1), the bottom of extension board (1) is fixed with support (2), one side of extension board (1) up end is fixed with nitrogen tank (3), the front side of nitrogen tank (3) is fixed with admission valve (4), its characterized in that: the middle of extension board (1) up end department is fixed with buffer tank (9) and sack filter (15), buffer tank (9) are connected with sack filter (15) through third connecting tube (14), the top of sack filter (15) is fixed with first roof (16) through first bolt (17), the bottom of first roof (16) is fixed with first filter screen (18), the interior bottom at sack filter (15) is connected to first filter screen (18) block, the opposite side of extension board (1) up end is fixed with purifying mechanism (19), the head end of purifying mechanism (19) is connected with sack filter (15).

2. The blast furnace top gas recovery apparatus with buffer structure according to claim 1, wherein: one side of the buffer tank (9) is fixed with a gas pipeline (10), a recovery valve (11) is fixed in the gas pipeline (10), the gas pipeline (10) penetrates through the support plate (1) and is connected with a second connecting pipeline (12), and a pressure sensor (13) is fixed at the inner bottom of the buffer tank (9).

3. The blast furnace top gas recovery apparatus with buffer structure according to claim 1, wherein: the purifying mechanism (19) comprises an exhaust pipeline (1901) and a bearing box (1903), the exhaust pipeline (1901) is fixed on one side of the cloth bag filter (15), a check valve (1902) is fixed in the exhaust pipeline (1901), the bearing box (1903) is fixed on the other side of the upper end face of the support plate (1), the exhaust pipeline (1901) stretches into the bearing box (1903), and an exhaust hole (1904) is formed in the exhaust pipeline (1901).

4. A blast furnace top gas recovery apparatus with buffer structure according to claim 3, wherein: the inner bottom of the bearing box (1903) is connected with a second filter screen (1905) in a clamping mode, the second filter screen (1905) is of an annular structure, a second top plate (1906) is fixed to the top of the second filter screen (1905), the second top plate (1906) is fixed to the top of the bearing box (1903) through a second bolt (1907), and an exhaust channel (1908) is fixed to one side of the bearing box (1903).

5. The blast furnace top gas recovery apparatus with buffer structure according to claim 1, wherein: the nitrogen tank is characterized in that an air pump (5) is fixed at the inner bottom of the nitrogen tank (3), an air pipeline (6) is fixed at the bottom of the air pump (5), a nitrogen shut-off valve (7) is fixed in the air pipeline (6), and the air pipeline (6) penetrates through the bottom of the nitrogen tank (3) and the support plate (1) and is connected with a first connecting pipeline (8).

6. The blast furnace top gas recovery apparatus with buffer structure according to claim 1, wherein: the first filter screens (18) are distributed on the first top plate (16) at equal intervals.