CN209549030U - Water mist dust removing equipment for blast furnace taphole - Google Patents

Abstract

The utility model discloses a water mist dust removal device for a blast furnace taphole, which comprises a top-suction electric dust collector for the taphole, a water tank, a first air inlet pipe, a water inlet pipe, a water outlet pipe and a second air inlet pipe. One end of the first air inlet pipe is installed on the top of the water tank, one end of the water inlet pipe and one end of the water outlet pipe are respectively connected with the water tank, the second air inlet pipe is also arranged on the water outlet pipe, and the other end of the water outlet pipe is arranged at the taphole Around the top-suction electrostatic precipitator, multiple spray holes are set on the outlet pipe of the top-suction electrostatic precipitator at the taphole. The utility model is used for water mist dedusting above the blast furnace taphole, and can use water and compressed air to mix and produce water mist, which can achieve the effect of water mist dust reduction after spraying out, with low cost, simple transformation technology, low energy consumption, and can solve existing problems In some blast furnaces, there is a problem that there is a lot of smoke and dust when tapping the iron hole, and the effect is good.

Description

Water mist dust removal equipment for blast furnace taphole

technical field

The utility model relates to the technical field of water mist dedusting in the metallurgical industry, in particular to a water mist dedusting device for blast furnace tapholes.

Background technique

In the process of blast furnace tapping, it is often encountered that the iron hole is splashed due to the gas escaping from the iron hole. The iron hole splash will bring a lot of smoke and dust and slag iron, which greatly increases the dust removal pressure, causes environmental pollution, and Affect the normal production of the blast furnace. In order to solve the large amount of smoke and dust caused by the splashing of the iron hole, the top suction electrostatic precipitator is designed on the front and upper part of the blast furnace iron hole. The side-suction electrostatic precipitator cannot completely suck away the dust, and every time a large amount of dust is released to the electrostatic precipitator, the dust removal effect is not ideal.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a water mist dedusting device for blast furnace tapholes. The equipment can spray water mist on dusty parts to solve the problem of dusty dust.

The technical scheme of the utility model is: a water mist dust removal equipment for a blast furnace taphole, including a top-suction electrostatic precipitator for the taphole, a water tank, a first inlet pipe, a water inlet pipe, a water outlet pipe and a second inlet pipe. Air pipe, one end of the first air inlet pipe is installed on the top of the water tank, one end of the water inlet pipe and one end of the water outlet pipe are connected to the water tank respectively, the second air inlet pipe is also provided on the described water outlet pipe, and the other end of the water outlet pipe is provided with Around the top-suction electrostatic precipitator of the taphole, a plurality of spray holes are arranged on the outlet pipe at the top-suction electrostatic precipitator of the taphole. Among them, the water tank can store the water required for spraying water mist. After the first air intake pipe is ventilated, the water in the water tank enters the water outlet pipe under air pressure. The top-suction electrostatic precipitator at the blast furnace taphole sprays water mist through the spray hole to achieve the effect of water mist dust removal.

The other end of the water inlet pipe is connected to an external water source, the other end of the first air inlet pipe is connected to a compressed air pipeline, one end of the second air inlet pipe is connected to a water outlet pipe, and the other end of the second air inlet pipe is connected to an air supply pipe.

The water tank is also provided with a safety valve.

The bottom of the water tank is also provided with a blowdown pipe, and the blowdown pipe is provided with a blowdown valve.

On the water outlet pipe, the distance between adjacent spray holes is the same, and the distance is 230-280mm.

On the water outlet pipe, the opening of the spray hole faces the direction of the top-suction electrostatic precipitator away from the taphole.

The water inlet pipe, the water outlet pipe, the first air inlet pipe and the second air inlet pipe are all provided with valves.

The first air inlet pipe, the water inlet pipe, the water outlet pipe and the second air inlet pipe are all made of seamless steel pipes.

The water outlet pipe and the second air inlet pipe and the different water outlet pipes are all connected by welding.

The diameter of the spray hole on the outlet pipe is 3-5mm.

The principle of using the above-mentioned water mist dust removal equipment for blast furnace tapholes is that the water tank is filled with water through the water inlet pipe, and then the first air inlet pipe on the top of the water tank is opened, and compressed air is introduced, and the air pressure makes the water in the water tank Water enters the outlet pipe, opens the valve of the second inlet pipe to feed high-pressure gas, and adjusts the water volume of the outlet pipe through the valve of the outlet pipe. After the water and gas are mixed, water mist is sprayed from the spray hole to achieve dust removal with water mist at the blast furnace taphole. Effect.

Compared with the prior art, the utility model has the following beneficial effects:

The water mist dust removal equipment for the blast furnace taphole is used for the water mist dust removal above the blast furnace taphole. It can use the mixture of water and compressed air to generate water mist, which can achieve the effect of water mist dust reduction after spraying. The cost is low and the transformation technology It is simple and low in energy consumption, and can solve the problem of large and outwardly rising smoke and dust in the existing blast furnace tap hole, with good effect.

The water mist dust removal equipment for the blast furnace taphole, through the design of a utility model for spraying water mist on the dusty part, spraying water mist on the dusty part to prevent the occurrence of dust, the technology is simple, the transformation cost is low, and the operation is simple and easy. , compared with the existing technology, it is very energy-saving and the effect is obvious.

Description of drawings

Fig. 1 is a structural schematic diagram of the water mist dedusting equipment used in the blast furnace taphole.

Detailed ways

The utility model will be further described in detail below in conjunction with the examples, but the implementation of the utility model is not limited thereto.

Example

A kind of water mist dedusting equipment for blast furnace taphole of the present embodiment, as shown in Figure 1, comprises the top-suction type electrostatic precipitator 6 of two tapholes, water tank 1, first air inlet pipe 3, water inlet pipe 2 , the water outlet pipe 4 and the second air inlet pipe 5, the volume of the water tank 1 is 0.5m ³ , the working pressure is 1.35Mpa, one end of the first air inlet pipe 3 is installed on the top of the water tank 1, one end of the water inlet pipe 2 and the water outlet pipe 4 One end is respectively connected with the water tank 1, and the second air inlet pipe 5 is also arranged on the water outlet pipe 4, and the other end of the water outlet pipe 4 is arranged around the top suction electrostatic precipitator 6 of the taphole, and is located at the top of the taphole. A plurality of spray holes 7 are arranged on the outlet pipe 4 of the suction electrostatic precipitator 6 . The water tank 1 can store the required water. After the first air intake pipe 3 is ventilated, the water in the water tank 1 is subjected to air pressure and enters the water outlet pipe 4. The water in the water outlet pipe 4 is mixed with compressed air and passed through the spray hole 7 in the blast furnace. The top-suction electrostatic precipitator 6 at the mouth sprays water mist to achieve the effect of water mist dust removal. The top-suction electrostatic precipitator of the taphole is installed above the blast furnace taphole, and the taphole (not shown in the figure) is an important part of the blast furnace.

The water tank is also provided with a safety valve 8, which ensures that the working pressure of the gas tank cannot exceed 1.75Mpa, and plays the role of safety protection. The bottom of the water tank is also provided with a blowdown pipe 9, and the blowdown pipe is provided with a blowdown valve for the purpose of discharging the impurities deposited for a long time in the water tank in order to avoid blocking the water pipe. One end of the second air inlet pipe 5 is connected with the water outlet pipe 4, and the other end of the second air inlet pipe 5 is connected with an air supply pipeline (not shown in the figure), and feeds the high-pressure gas of 0.95Mpa. The other end of the water inlet pipe 2 is connected to an external water source (not shown in the figure). The other end of the first air intake pipe 3 is externally connected to a compressed air pipeline (not shown in the figure). On the outlet pipe 4, the adjacent spray holes 7 have the same spacing, the aperture is 4mm, and the spacing is 250mm. On the water outlet pipe 4, the opening of the spray hole 7 is set towards the direction away from the top-suction electrostatic precipitator 6 of the taphole. The water inlet pipe 2, the water outlet pipe 4, the first air inlet pipe 3 and the second air inlet pipe 5 are all provided with valves. The first air inlet pipe 3, the water inlet pipe 2, the water outlet pipe 4 and the second air inlet pipe 5 are all made of seamless steel pipes. The water outlet pipe 4 and the second air inlet pipe 5 and between different water outlet pipes are connected by welding.

Using the above-mentioned water mist dedusting equipment for the blast furnace taphole, the water tank is filled with water through the water inlet pipe, and then the first air inlet pipe on the top of the water tank is opened, and compressed air is introduced, and the air pressure makes the water in the water tank enter the outlet pipe , Open the valve of the second inlet pipe to feed high-pressure gas, and adjust the water volume of the outlet pipe through the valve of the outlet pipe. After the water and gas are mixed, water mist is sprayed from the spray hole to achieve the effect of water mist dust removal at the blast furnace taphole.

As mentioned above, the utility model can be better realized, and the above-described embodiment is only a preferred embodiment of the utility model, and is not used to limit the scope of implementation of the utility model; that is, all equal changes made according to the contents of the utility model and modifications are all covered by the scope of protection required by the claims of the present utility model.

Claims (10)

1. a kind of water mist dedusting equipment that blast furnace taphole is used, it is characterized in that, comprise the top-suction electric precipitator of taphole, water tank, the first air inlet pipe, water inlet pipe, water outlet pipe and the second air inlet pipe, One end of the first air inlet pipe is installed on the top of the water tank, one end of the water inlet pipe and one end of the water outlet pipe are respectively connected with the water tank, the second air inlet pipe is also provided on the water outlet pipe, and the other end of the water outlet pipe is located at the water outlet. Around the top-suction electrostatic precipitator of the taphole, a plurality of spray holes are arranged on the outlet pipe at the top-suction electrostatic precipitator of the taphole. 2. The water mist dedusting equipment for a blast furnace taphole according to claim 1, wherein the other end of the water inlet pipe is connected to an external water source, the other end of the first air inlet pipe is externally connected to a compressed air pipeline, and the second One end of the air inlet pipe is connected with the water outlet pipe, and the other end of the second air inlet pipe is connected with the air supply pipe. 3. A water mist dedusting device for a blast furnace taphole according to claim 1, wherein a safety valve is also provided on the water tank. 4. A water mist dedusting device for a blast furnace taphole according to claim 1, characterized in that, the bottom of the water tank is further provided with a blowdown pipe, and a blowdown valve is arranged on the blowdown pipe. 5 . The water mist dedusting equipment for blast furnace taphole according to claim 1 , characterized in that, on the outlet pipe, the distance between adjacent spray holes is the same, and the distance is 230-280 mm. 6. A water mist dedusting device for a blast furnace taphole according to claim 1, characterized in that, on the water outlet pipe, the opening of the spray hole faces the direction of the top-suction electrostatic precipitator away from the taphole. 7. A water mist dedusting device for a blast furnace taphole according to claim 1, wherein valves are provided on the water inlet pipe, the water outlet pipe, the first air inlet pipe and the second air inlet pipe. 8. A water mist dedusting device for a blast furnace taphole according to claim 1, wherein the first air inlet pipe, the water inlet pipe, the water outlet pipe and the second air inlet pipe are all made of seamless steel pipes. 9. A water mist dedusting device for a blast furnace taphole according to claim 1, characterized in that the water outlet pipe and the second air inlet pipe and between different water outlet pipes are connected by welding. 10. The water mist dedusting equipment for blast furnace taphole according to claim 1, characterized in that, the diameter of the spray hole on the outlet pipe is 3-5mm.