CN217536041U

CN217536041U - Blast furnace top pressure-equalizing gas drainage device

Info

Publication number: CN217536041U
Application number: CN202221444789.6U
Authority: CN
Inventors: 侯荣宝; 马孝彬; 李炳建; 费腾腾; 张强; 秦花; 陈忠军; 王辉; 王鹏鹏; 马宝安; 徐建飞
Original assignee: Shandong Laigang Yongfeng Steel and Iron Co Ltd
Current assignee: Shandong Laigang Yongfeng Steel and Iron Co Ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-10-04
Anticipated expiration: 2032-06-10

Abstract

The utility model discloses a pressure-equalizing gas drainage device at the top of a blast furnace, which comprises a spiral pipe, a hose, a water inlet pipe, a water outlet pipe, a water tank and a water pump, wherein one end of the water inlet pipe is communicated with the water tank and the inlet of the other end of the water inlet pipe is connected with the hose, one end of the water outlet pipe is communicated with the water tank and the outlet of the other end of the water outlet pipe is connected with the hose, the hose is wound on the spiral pipe, and the water pump is arranged on the water inlet pipe; one end of the spiral pipe is provided with an air inlet pipe, the other end of the spiral pipe is provided with an air outlet pipe, a water outlet pipe is arranged on the air inlet pipe, and a valve is arranged on the water outlet pipe. The utility model discloses in, the temperature of furnace roof voltage-sharing coal gas is effectively reduced, and its water content reduces by a wide margin, and the dust in dry coal gas is difficult and the material takes place to bond to reduce the emergence of scale deposit phenomenon, avoided closing the voltage-sharing that not strictly produces or diffuse the condition such as failure because of the valve, secondly the reduction of moisture in the coal gas has avoided leading to the fact the emergence of furnace roof valve bonding phenomenon because of winter is cold, has ensured blast furnace normal production and safety.

Description

Blast furnace top pressure-equalizing gas drainage device

Technical Field

The utility model relates to a blast furnace top gas pressure equalizing system's drainage field, more specifically says, the utility model relates to a blast furnace top pressure equalizing gas drainage device.

Background

The blast furnace top equipment comprises a receiving hopper, a charging bucket, a pressure equalizing pipeline, a diffusing pipeline and the like, wherein the pressure equalizing pipeline is communicated with the charging bucket, the inside of the blast furnace is always in a high-temperature and high-pressure state, and the charging bucket is a bridge for allowing fuel substances in an external normal-pressure state to enter the inside of the blast furnace. The materials in the receiving hopper are loaded into the charging bucket, the pressure equalizing pipeline is in a state of pressure balance in the furnace by conveying high-pressure coal gas, and then a valve communicated with the inside of the furnace is opened to discharge the materials into the furnace according to the set requirements. After the material is discharged from the material tank, a valve communicated with the interior of the furnace is closed, a relief pipeline is opened to recover the pressure in the material tank to a normal pressure state, and then the material receiving hopper is repeated to carry out the material charging process on the material tank.

The gas used for equalizing the pressure at the top of the furnace is subjected to dust removal and water removal treatment. However, in the actual production process, fine dust in the wet equalized gas is often mixed in the material and adhered to the positions of the equalized pressure valve, the relief valve, the upper sealing valve, the lower sealing valve and the like. The long-time dust accumulation and the influence of high-temperature and high-pressure environment can generate scale at the valve gaps, and finally the valves are not closed tightly, so that the pressure equalizing or the bleeding failure is caused to directly influence the production of the blast furnace.

The gas used for equalizing the pressure at the top of the blast furnace is derived from the gas generated by the blast furnace, and the temperature of the gas is between 100 and 300 ℃. The gas is transported by a pipeline and filtered by dry dedusting, one part of the gas is used for heating the air furnace, one part of the gas is transported to a gas pipe network for other gas consumption equipment, and the other part of the gas is used as a top pressure equalizing medium. Although the blast furnace gas is filtered layer by layer, the dust content of the blast furnace gas is usually (10-30) mg/cubic meter, and the temperature is about 200 ℃. In this case, the water in the gas is mixed in the gas in the form of gas, and when reaching the top of the furnace, the gas is liquefied by condensation. The dust in the material and the water in the coal gas are subjected to complex chemical reaction, and the valve and the pipeline are scaled to form nodules in the past for a long time, so that the valve gap is enlarged to cause the failure of pressure equalization and diffusion. Secondly, when the temperature is lower in winter, the condensed water drops can be quickly frozen to firmly bond the valve to cause switch failure, or the pipeline is blocked due to ice accumulation, thereby seriously affecting the production and safety of the blast furnace.

Therefore, a pressure-equalizing gas drainage device on the top of the blast furnace needs to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a blast furnace top pressure-equalizing coal gas drainage device, which mainly solves the problems mentioned in the background technology.

The utility model provides a blast furnace top pressure-equalizing gas drainage device, which comprises a spiral pipe, a hose, a water inlet pipe, a water outlet pipe, a water tank and a water pump, wherein one end of the water inlet pipe is communicated with the water tank, the other end of the water inlet pipe is connected with the inlet of the hose, one end of the water outlet pipe is communicated with the water tank, the other end of the water outlet pipe is connected with the outlet of the hose, the hose is wound on the spiral pipe, and the water pump is arranged on the water inlet pipe;

one end of the spiral pipe is provided with an air inlet pipe, the other end of the spiral pipe is provided with an air outlet pipe, a water outlet pipe is arranged on the air inlet pipe, and a valve is arranged on the water outlet pipe.

In a preferred embodiment, the spiral pipe has at least four layers, and the diameter of the circumscribed cylinder in which the spiral pipe is located is 4 meters.

In a preferred embodiment, the hose has a diameter of 25 mm.

In a preferred embodiment, the drain pipe has a diameter of 35 mm.

In a preferred embodiment, the water collecting device further comprises a water collecting tank, and the water collecting tank is placed below the drain pipe.

In a preferred embodiment, the hose is of a heat resistant rubber material.

The utility model discloses a technological effect and advantage:

when furnace top pressure-equalizing gas flows through the spiral pipe, the temperature is effectively reduced, the water content is greatly reduced, and the dried gas is not easy to be bonded with dust in materials, so that the scaling phenomenon is reduced, the conditions of pressure equalizing or diffusion failure and the like caused by untight closing of a valve are avoided, and then the reduction of water in the gas avoids the bonding phenomenon of the furnace top valve caused by cold in winter, and the normal production and safety of the blast furnace are ensured.

Drawings

FIG. 1 is a front view of a spiral pipe;

FIG. 2 is an overall elevation view of the hose wound around the spiral pipe;

fig. 3 is a schematic view of a use scene that the whole device is installed on an original pressure equalizing pipeline.

Description of reference numerals: 1. a spiral tube; 11. an air inlet pipe; 12. an air outlet pipe; 13. a drain pipe; 14. a valve; 2. a hose; 21. a water inlet pipe; 22. a water outlet pipe; 23. a water tank; 24. and (4) a water pump.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

A blast furnace top pressure-equalizing gas drainage device is shown in figures 1-3 and comprises a spiral pipe 1, a hose 2, a water inlet pipe 21, a water outlet pipe 22, a water tank 23 and a water pump 24, wherein one end of the water inlet pipe 21 is communicated with the water tank 23, the other end of the water inlet pipe is connected with an inlet of the hose 2, one end of the water outlet pipe 22 is communicated with the water tank 23, the other end of the water outlet pipe is connected with an outlet of the hose 2, the hose 2 is wound on the spiral pipe 1, the water pump 24 is arranged on the water inlet pipe 21, namely the water pump 24 works, water in the water tank 23 sequentially passes through the water inlet pipe 21, the hose 2 and the water outlet pipe 22 and then flows back into the water tank 23;

one end of the spiral pipe 1 is provided with an air inlet pipe 11, the other end is provided with an air outlet pipe 12, the air inlet pipe 11 and the air outlet pipe 12 are conveniently installed on an original pressure equalizing pipeline, a water outlet pipe 13 is arranged on the air inlet pipe 11, and a valve 14 is arranged on the water outlet pipe 13.

The spiral pipe 1 has at least four layers, and the diameter of the external cylinder where the spiral pipe 1 is located is 4 meters, so that the heat dissipation area of the spiral pipe 1 is increased.

The hose 2 has a diameter of 25 mm.

The diameter of the drain pipe 13 is 35 mm.

The water collecting device further comprises a water collecting tank, the water collecting tank is placed below the drain pipe 13, and condensed water flows into the water collecting tank through the drain pipe 13.

The hose 2 is made of heat-resistant rubber and can be wound on the spiral pipe 1 in a bending manner.

When the furnace top pressure equalizing pipe is used, referring to fig. 3, at the position of the furnace top pressure equalizing pipe at the original gravity dust removal position, the next section is intercepted, the air inlet pipe 11, the spiral pipe 1 and the air outlet pipe 12 are installed at the intercepted position (to replace the original linear pressure equalizing pipe), the hose 2 is wound on the spiral pipe 1, the water inlet pipe 21, the water outlet pipe 22, the water pump 24 and the water tank 23 are installed, when water in the water tank 23 flows through the hose 2, the water and the pressure equalizing gas flowing through the spiral pipe 1 are subjected to full heat exchange, so that the temperature of the pressure equalizing gas is reduced, water vapor in the pressure equalizing gas is condensed into water drops after being cooled, and the water drops flow downwards and are discharged through the water discharge pipe 13.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present disclosure. Structures, devices and methods of operation not specifically described or illustrated in the present application are not specifically illustrated or described, but are generally practiced in the art without limitation.

Claims

1. A blast furnace top pressure-equalizing gas drainage device is characterized by comprising a spiral pipe, a hose, a water inlet pipe, a water outlet pipe, a water tank and a water pump, wherein one end of the water inlet pipe is communicated with the water tank, the other end of the water inlet pipe is connected with an inlet of the hose, one end of the water outlet pipe is communicated with the water tank, the other end of the water outlet pipe is connected with an outlet of the hose, the hose is wound on the spiral pipe, and the water pump is arranged on the water inlet pipe;

2. The blast furnace top pressure-equalizing gas drainage device according to claim 1, wherein the spiral pipe has at least four layers, and the diameter of the circumscribed cylinder in which the spiral pipe is located is 4 meters.

3. The blast furnace top pressure equalizing gas drain device according to claim 2, wherein the hose has a diameter of 25 mm.

4. The blast furnace top pressure equalizing gas drain device according to claim 3, wherein the diameter of the drain pipe is 35 mm.

5. The blast furnace top pressure-equalizing gas drain device according to claim 4, further comprising a water receiving tank disposed below the drain pipe.

6. The blast furnace top pressure equalizing gas drain device according to claim 5, wherein the hose is made of heat-resistant rubber.