Monolithic uniform-gas-distribution brick of hot-blast furnace

Abstract

The invention relates to a monolithic uniform-gas-distribution brick of a hot-blast furnace. The brick is of a regular hexagonal prism with an internal central through hole, wherein the central through hole consists of a tapering section, a throat-opening straight section and a flaring section, both the tapering section and the flaring section of the central through hole are conical surfaces, thethroat-opening straight section is a cylindrical surface, the tapering section and the flaring section are symmetric to each other by taking a semi-high cross section of the regular hexagonal prism asa symmetry plane, central axes of the tapering section, the flaring section and the throat-opening straight section of the central through hole are superposed with a central axis of the regular hexagonal prism, six throat opening gas holes are formed in the middle edge angle part of the regular hexagonal prism, and six grooves are uniformly distributed in each of two bottom faces of the regular hexagonal prism. According to the monolithic uniform-gas-distribution brick of the hot-blast furnace, the slip or misalignment of the uniform-gas-distribution brick of the existing hot-blast furnace can be avoided or reduced, the rectifying and uniform gas distribution effects of the uniform-gas-distribution brick of the hot-blast furnace can be remarkably improved, and the overall thermal efficiency and benefit of the hot-blast furnace in a furnace service period are increased.

Description

technical field [0001] The invention belongs to the technical field of kilns, and in particular relates to a uniform gas distribution brick for an integral hot blast furnace. Background technique [0002] At present, due to the constraints or limitations of its own structure and gas flow laws, the hot blast stove has the disadvantage of uneven distribution of high-temperature flue gas on the checker brick section of the regenerator. In order to solve this technical problem, a hot blast stove with uniform gas distribution Brick (Chinese patent CN205616915U) provides a method that can not only overcome the disadvantages of uneven distribution of high-temperature smoke on the side away from the combustion chamber and the side close to the combustion chamber on the section of the internal combustion regenerator, but also overcome the disadvantages of the top-combustion hot blast stove. The gas distribution brick with the defect of uneven temperature distribution on the inner end...

AI Technical Summary

Problems solved by technology

[0002] At present, due to the constraints or limitations of its own structure and gas flow laws, the hot blast stove has the disadvantage of uneven distribution of high-temperature flue gas on the checker brick section of the regenerator. In order to solve this technical problem, a hot blast stove with uniform gas distribution Brick (Chinese patent CN205616915U) provides a method that can not only overcome the disadvantages of uneven distribution of high-temperature smoke on the side away from the combustion chamber and the side close to the combustion chamber on the section of the internal combustion regenerator, but also overcome the disadvantages of the top-combustion hot blast stove. The gas distribution brick with the defect of uneven temperature distribution on the inner end surface of the hot blast stove caused by the swirling flow phenomenon formed by the burner structure and the combustion top combustion chamber structure has low production cost in the actual operation process, and the early operation effect is good. However, due to the influence of thermal stress and other practical factors at the end of the hot blast stove, the upper and lower uniform gas distribution bricks slipped or misplaced, reducing or even losing the rectification and uniform gas distribution of the hot blast stove uniform gas distribution bricks effect

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