Novel combined brick structure of self-locking sealed blast furnace warm air duct intersection

Abstract

The invention provides a novel combined brick structure of a self-locking sealed blast furnace warm air duct intersection and relates to the technical field of thermal power engineering. A key technology of self-locking refractory brick masonry structure is adopted, self-locking refractory bricks with both flat ends and self-locking refractory bricks with one flat end and one pointed end are selected within bending angles of 1-180 degrees according to the actual condition of diameter of the intersection connecting site of a main pipe and a surrounding pipe (or branch pipe), and the self-locking refractory bricks are built to form a novel annular combined brick structure at the intersection connecting site of the main pipe and the surrounding pipe (or branch pipe) in the blast furnace warm air duct so as to eliminate the annular faulted joint at the intersection connecting site of the main pipe and the surrounding pipe (or branch pipe) in the blast furnace warm air duct and numerous triangular faulted joints of the annular faulted joint. The novel combined brick structure is applied to blast furnace warm air duct intersection structures. The novel combined brick structure has the advantages of scientific and smart design, no annular faulted joints or triangular faulted joints, severe environment resistance, high production efficiency and excellent quality.

Description

technical field [0001] The invention relates to a new composite brick structure of a self-locking and sealing blast furnace hot blast pipeline three-way junction, which relates to the technical field of thermal energy engineering; in particular, it relates to the technical field of the composite brick structure at the junction of the main pipe and the surrounding pipe (or branch pipe) three-way junction in the blast furnace hot blast pipeline; The technical field of a new composite brick structure at a three-way junction of a lock-sealed blast furnace hot blast pipeline. Background technique [0002] At present, the air temperature that the hot blast stove can provide is 1000 ℃ ~ 1300 ℃. Increasing the hot air temperature is an important means to reduce the coke ratio and increase the coal injection ratio. With the strengthening of blast furnace smelting, high air temperature and high air pressure levels are also Then gradually increase. At present, the connection between t...

AI Technical Summary

Problems solved by technology

At present, the connection between the main pipe and the surrounding pipe (or branch pipe) in the hot blast pipeline of the blast furnace is generally lacking in scientific and reasonable structure due to its structure, the part of the fork will be burned red, the surface temperature is high, and the service life is short. , defects and disadvantages

More specifically, the connection of the three-way junction and the air supply pipe were burned red, which limited the hot air temperature, oxygen enrichment rate, and the injection amount of pulverized coal, seriously affected normal production, and caused serious loss of heat energy and production output. decline, and even lead to the vicious consequences of the pipeline being burned through and forced to stop production; no one has been able to solve this outstanding technical problem facing the industry.

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