A bottom coke discharge chute system for CDQ

Abstract

The invention discloses a bottom coke discharging chute system for coke dry quenching. The bottom coke discharging chute system comprises a receiving barrel located at the upper part, wherein a receiving port is formed in the upper end of the receiving barrel, the lower end of the receiving barrel is connected with two forking chute pipelines arranged in a forking manner, an inverted Y shape is formed, a vertical section bending vertically downwards is arranged at the lower part of each forking chute pipeline, and a discharging port is formed in the lower part of the vertical section; the system further comprises a dust removal pipeline, one end of the dust removal pipeline is connected with a dust removal fan, and the other end communicates with the receiving barrel. The bottom coke discharging chute system is characterized in that an impact energy dissipation plate is further arranged at the upper end of each vertical section at the lower part of the corresponding forking chute pipeline, the upper end of the impact energy dissipation plate is connected to the outer side of a bending position on the inner wall of the forking chute pipeline, and the lower end extends obliquely inwards in a hanging manner. The bottom coke discharging chute system has the advantages that the structure is simple, the service life is long and raise dust can be avoided better.

Description

technical field [0001] The invention relates to a coke dry quenching device used in the field of ironmaking, in particular to a coke discharge chute system at the bottom of the dry quenching coke. Background technique [0002] Coke is made by heating coal in bituminous coal to 950-1050°C under the condition of isolation from air, after drying, Pyrolysis , melt melt , bonding, curing, shrinkage and other stages of the product. Mainly used blast furnace ironmaking It is also used in blast furnace smelting of copper, lead, zinc, titanium, antimony, mercury and other non-ferrous metals, and acts as a reducing agent, heating agent and material column skeleton. Ironmaking blast furnace is replaced by coke charcoal , which laid the foundation for the large-scale modern blast furnace, and is a major milestone in the history of metallurgy. Therefore, it is necessary to make coke before making iron in general iron and steel plants. [0003] After the coal is smelted into co...

AI Technical Summary

Problems solved by technology

[0006] But this existing structure still has the following problems: 1. The dust removal effect is not good. When discharging coke with a large discharge, the coke directly touches the dust collection port, and the negative pressure in the dust removal pipe directly sucks coke powder, coke, and even lump coke into the pipe for deposition, resulting in reduced ventilation capacity and suction of the dust removal pipe. As a result, the dust generated by coking in the chute cannot be sucked away normally, and the dust around the chute is serious.

2. The outer inner wall of the upper end of the vertical section at the lower end of the first fork slide pipe and the second fork slide pipe directly bears the impact of coke. In this way, long-term frictional impact is easy to damage and the service life is short, and the second is that the energy dissipation effect is limited and cannot effectively reduce coke. Downward sliding energy, when the coke rushes out of the discharge port, the kinetic energy is large and the speed is fast, and it is easy to cause dust

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