Ammonia-free denitration regenerative burner

Abstract

The invention discloses an ammonia-free denitration regenerative burner. The ammonia-free denitration regenerative burner comprises a burner body, a baffle brick, a catalyst and a burner channel. Thebaffle brick is arranged in the burner body. The catalyst is cellular, and comprises a first catalyst body and a second catalyst body, the first catalyst body is a high-temperature catalyst, the second catalyst is a low-temperature catalyst, and the catalyst is arranged in the burner body in a layered manner and is fixedly connected with the upper end of the baffle brick. The burner channel is arranged in the burner body in a penetrating manner, and natural gas is introduced into the burner from the burner channel. The ammonia-free denitration regenerative burner is simple in structure and easy to operate, reducers, such as ammonia and urea, do not need to be introduced, and the temperature gradient of a flue is utilized for carrying out a catalytic reduction reaction; and the cellular catalyst is selected and is arranged in the layered manner, and good denitration performance can be achieved.

Description

technical field [0001] The invention relates to the technical field of regenerative burners, in particular to an ammonia-free denitration regenerative burner. Background technique [0002] Regenerative burner (RCB) is a burner that recovers heat from kiln flue gas through heat storage balls to preheat air to achieve the purpose of alternate combustion and uniform heating. Regenerative burners are mainly used in the field of industrial gas heating, and are known for their high combustion thermal efficiency. It is another major technical progress after the self-preheating burner. In recent years, it has been widely disseminated and demonstrated as the core of energy-saving technology in the United Kingdom, Western Europe, North America, Australia and Japan, and is used in forging furnaces, heat treatment furnaces, metal melting furnaces and glass tank furnaces. Industrial heating furnace, using fuel to control the temperature in the furnace at a high temperature of 900-1700 ...

AI Technical Summary

Problems solved by technology

[0003] Many domestic low NO x The regenerative burner mainly uses structural design to reduce NO x emission standards, but often not up to the ultra-low NO of the heating furnace x Emission standard (3 ); and by installing a denitrification catalyst, it is necessary to add ammonia water and urea, which will lead to a complex structure of the equipment, which needs to be determined according to the NO in the flue gas x The concentration of ammonia water is adjusted to adjust the injection amount of ammonia water. The operation is complicated and easily leads to ammonia escape and secondary pollution.

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