A vertical furnace regenerator

Abstract

The invention relates to a regenerative chamber of a vertical retort. The regenerative chamber comprises upper part regenerative chambers and lower part regenerative chambers, wherein the top of eachupper part regenerative chamber is provided with a top convergence airway communicated with the top of a combustion chamber, and the bottom of the upper part regenerative chamber is provided with a small flue of the upper part regenerative chamber; the top of each lower part regenerative chamber is provided with a small flue of the lower part regenerative chamber, and the bottom of the lower partregenerative chamber is provided with a bottom convergence airway communicated with the bottom of the combustion chamber; each unit regenerative chamber is formed by one upper part regenerative chamber and one lower part regenerative chamber; all the unit regenerative chambers and the combustion chambers are arranged in a way of one-to-one correspondence. According to the regenerative chamber of the vertical retort, the small flues of the lower part regenerative chambers are arranged on the tops of the lower part regenerative chambers, and the bottoms of the lower part regenerative chambers are communicated with the bottoms of the combustion chambers by means of the horizontal bottom convergence airways, so that the air flow resistances of different exchange cycles are enabled to be the same or similar, and the structure of the regenerative chamber is enabled to be simpler; furthermore, each unit regenerative chamber only corresponds to one combustion chamber, so that the temperaturesof vertical flame paths of the combustion chambers are more easily adjusted.

Description

technical field [0001] The invention relates to the technical field of vertical furnaces, in particular to an externally heated coal-based vertical furnace for producing direct reduced iron or a regenerator structure for a continuous vertical furnace for low-rank coal dry distillation. Background technique [0002] In the 1970s and 1980s, vertical furnaces were widely used to produce city gas and semi-coke. In recent years, with the country's emphasis on environmental protection, semi-coke has been increasingly regarded as a tool for household energy to control smog. The concept of a new type of clean energy semi-coke industry has given vertical furnaces room for development. At the same time, the use of vertical furnaces to directly reduce ironmaking to produce high-quality special steel has also become an important research direction in the steel industry. [0003] In the industrialized vertical furnace installation, the vertical furnace includes a carbonization chamber (...

AI Technical Summary

Problems solved by technology

In this technical solution, both the upper regenerator and the lower regenerator set small flues at the bottom, but the air passage connecting the lower regenerator and the bottom of the combustion chamber is a right-angled air passage, including a section of vertical air passage. In addition, in the conventional vertical furnace structure, each regenerator corresponds to two combustion chambers, and the air flow of one regenerator is adjusted , which will affect the temperature of the vertical flue of the two combustion chambers accordingly, so the temperature of the vertical flue of the combustion chamber is not easy to adjust, resulting in large temperature fluctuations during the production of the vertical furnace, and the generation of NOx is easy to exceed the standard, and it is difficult to meet the environmental protection requirements

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