CN214004703U

CN214004703U - Cleaning device for inclined holes of gas of surrounding pipe of reduction furnace

Info

Publication number: CN214004703U
Application number: CN202022239110.7U
Authority: CN
Inventors: 季书民
Original assignee: Xinjiang Bayi Iron and Steel Co Ltd
Current assignee: Xinjiang Bayi Iron and Steel Co Ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-08-20
Anticipated expiration: 2030-10-10

Abstract

The utility model discloses a clear device that leads to of reducing furnace surrounding pipe coal gas inclined hole, including the pneumatic pick, the drill bit of pneumatic pick is connecting a clear pole that leads to of "eight" font, and in clear pole extends the coal gas inclined hole of reducing furnace, a gas-supply pipe of the air inlet end fixed connection of pneumatic pick, a flexible pipe is being connected through twice interval arrangement's tight loop to the gas-supply pipe other end, and the high pressurized air source is being connected through control flap to the flexible pipe. The utility model discloses clear logical efficiently, can greatly reduced workman intensity of labour, save time.

Description

Cleaning device for inclined holes of gas of surrounding pipe of reduction furnace

Technical Field

The utility model relates to a clear device that leads to of reducing furnace surrounding pipe coal gas inclined hole.

Background

The raw gas generated by the gasifier of the pyrometallurgical furnace is called as generated gas, the temperature is 1050-1100 ℃, and the generated gas contains a large amount of dust. The generated coal gas passes through 4 coal gas generating pipes, is dedusted by a hot cyclone separator and then is divided into two parts, wherein one part of the coal gas enters a reduction furnace for pre-reduction of ores, and the other part of the coal gas passes through a cold coal gas filler scrubber and then is mixed with the pre-reduced coal gas of the reduction furnace for users to use. Coal gas generated by the euprocymia furnace gasifier firstly enters a surrounding pipe of the reduction furnace before entering the reduction furnace, is similar to a hot blast surrounding pipe of a blast furnace, and then eighty inclined hole passages for the coal gas of the reduction furnace are arranged in the surrounding pipe to enter the reduction furnace so as to provide the coal gas required by reduction reaction in the reduction furnace. Because coal gas input from a gasification furnace contains a large amount of dust, the dust can generate phenomena of fusion bonding and the like in a high-temperature state, a reduction furnace surrounding pipe and a coal gas inclined hole channel can generate blocking phenomena in the continuous production process of the reduction furnace, once the reduction furnace surrounding pipe is blocked, the coal gas flow entering the reduction furnace is unevenly distributed, the coal gas flow is insufficient when a large amount of reduction furnace surrounding pipes are blocked, and the pressure difference of the shaft furnace surrounding pipe is increased, so that the stable forward running of the reduction furnace is directly influenced. In addition, if the process is not operated properly, the top gas is controlled to be lower than the pressure of the gasification furnace in the damping down process, so that the coke breeze in the reduction furnace is carried into the gas of the surrounding pipe and the inclined hole channel of the gas through the gas flow, and the blockage is easily caused. Therefore, after the surrounding pipes and the inclined coal gas holes are blocked, the reduction furnace is abnormal in working state, abnormal in furnace condition and low in metallization rate, the reduction furnace needs to be emptied, the surrounding pipes and the inclined coal gas holes need to be cleared, the surrounding pipes and the inclined coal gas holes need to enter the reduction furnace, and eighty surrounding pipes of the reduction furnace need to be cleared. According to the experience of the Bao steel Rojing surrounding pipe blockage removal, when the blockage removal is carried out each time, an operator waits until the temperature in the furnace is lower than 80 degrees, wears a special aluminum platinum heat insulation suit, and uses a sharp-pointed or flat-headed steel chisel to knock the steel chisel by a manual hammer to dredge the surrounding pipe. The cleaning difficulty is very high, the manual cleaning efficiency is very low, the surrounding pipe blockage cleaning time spent in each reducing furnace cleaning operation is about 24 hours, and the part of the time occupies about one third of the whole reducing furnace cleaning time, so that a new tool for cleaning the surrounding pipe and the inclined gas hole of the reducing furnace is developed, and the tool is a necessary condition for improving the reducing furnace cleaning efficiency and saving the overhaul time.

Disclosure of Invention

An object of the utility model is to provide a clear device that leads to of reducing furnace surrounding pipe coal gas inclined hole, clear lead to efficiently, can greatly reduced workman intensity of labour, save time.

The cleaning device for the coal gas inclined holes of the surrounding pipes of the reduction furnace comprises an air pick, wherein a drill bit of the air pick is connected with an eight-shaped cleaning rod, the cleaning rod extends into the coal gas inclined holes of the reduction furnace, the air inlet end of the air pick is fixedly connected with an air pipe, the other end of the air pipe is connected with a flexible pipe through two fastening rings arranged at intervals, and the flexible pipe is connected with a high-pressure air source through a control valve.

The utility model discloses a pneumatic pick bore bit can drive and be the clear pole that leads to of "eight" font, and the vibrational force of pneumatic pick passes through pneumatic unit head connecting device and transmits for clear pole, and clear pole vibration leads to the fact the plug loose, through the effect of gravity by the coal gas inclined hole landing to the reduction furnace in, reaches the purpose of mediation, has improved and has relied on the manpower hammer to strike the drill rod and clear the time-consuming, hard maintenance operation who leads to the coal gas inclined hole.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic view of the structure of the present invention.

Detailed Description

A clearing device for coal gas inclined holes of a reduction furnace surrounding pipe comprises a pneumatic pick 4, a drill bit 9 of the pneumatic pick 4 is connected with a splayed clearing rod 1, and the drill bit 9 is hinged with the clearing rod 1. The clearing rod 1 extends into a coal gas inclined hole 2 of the reducing furnace, a gas inlet end of the pneumatic pick 4 is fixedly connected with a gas pipe 7, the other end of the gas pipe 7 is connected with a flexible pipe 5 through two fastening rings 6 which are arranged at intervals, and the flexible pipe 5 is connected with a high-pressure gas source 8 through a control valve 3.

Claims

1. The utility model provides a clear device that leads to of reducing furnace shroud pipe coal gas inclined hole, includes the pneumatic pick, characterized by: the drill bit of pneumatic pick is connected with a splayed clear rod which extends into a coal gas inclined hole of the reducing furnace, the air inlet end of the pneumatic pick is fixedly connected with a gas pipe, the other end of the gas pipe is connected with a flexible pipe through two fastening rings arranged at intervals, and the flexible pipe is connected with a high-pressure air source through a control valve.