Device for improving smoke discharge capability of heat-accumulation-type stove kiln

Abstract

The invention provides a device for improving smoke discharge capability of a heat-accumulation-type stove kiln. The device is characterized in that a heat-accumulation-type nozzle brick is divided into an upper semi part, a lower semi part and an outer sleeve; the upper semi part and the lower semi part of the nozzle brick are fixed together through the outer sleeve, and are provided with unidirectional auxiliary channels with corresponding axes; the cross section of the channel at the upper semi part of the nozzle brick is elliptic; the cross section of the channel at the lower semi part of the nozzle brick is round; a spherical space is arranged at the joint part of the upper semi part and the lower semi part of the nozzle brick of the auxiliary channel, and occupies half of the upper semi part of the nozzle brick and half of the lower semi part of the nozzle brick; and a fire-resistant ball is put in the spherical space. According to the invention, under the condition that the invariable normal nozzle orifice area and flow rate of smoke are ensued, the smoke discharge area is increased, the smoke exhaust capability is improved, the smoke rate flowing through a heat accumulation chamber is increased, the stove pressure stability is ensured, and the recycling and utilization efficiency of smoke sensible heat is improved; and simultaneously the problem that electricity energy is wasted by adopting an ultra large draught fan is solved.

Description

technical field [0001] The invention belongs to the technical field of thermal engineering and is suitable for the regenerative combustion heating process in metallurgy and mechanical processing. Specifically, the utility model relates to a device for improving the smoke exhaust capacity of a regenerative kiln. Background technique [0002] Due to the remarkable energy-saving effect, regenerative combustion technology has been rapidly promoted in the field of thermal engineering. Especially in various heating furnaces, molten steel tanks, and hot metal tank baking devices in the metallurgical industry, it is widely used. However, in the implementation process of the current regenerative combustion technology, due to the volume expansion of the high-temperature flue gas after combustion, the smoke exhaust capacity of the regenerative burner is limited. It can be seen from the calculation that when the blast furnace gas dual regenerative method is adopted, there will be 10% ...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to solve the problem of poor smoke exhaust capability of the above-mentioned regenerative kiln, provide a method and device for improving the smoke exhaust capability of the regenerative kiln, overcome the deficiencies in the existing regenerative heating technology, and solve the problem of Due to the limitation of the cross-sectional area of ​​the burner nozzle, the furnace fire problem caused by insufficient smoke exhaust capacity, on the premise of not affecting the combustion effect, increase the amount of flue gas flowing through the regenerator

Images