Combustion device for rotational flow mixed combustion by spraying air above uniformly distributed gas jets in loop

Abstract

The invention relates to a combustion device for rotational flow mixed combustion by spraying air above uniformly distributed gas jets in a loop. The problems that a combustion device has a complex structure and requires a larger combustion space, gas mixing is non-uniform, the combustion is incomplete, the environment is polluted and the energy is wasted are effectively solved. The upper part inside a wall body of a combustion chamber is provided with a rotational flow and backflow combustion chamber; a gas inlet pipe and an air inlet pipe are arranged on a cylinder; the gas inlet pipe is connected with a gas distributing loop; the gas jets on the upper part of the gas distributing loop are connected with an airflow mixing loop; the airflow mixing loop is positioned at the bottom of the rotational flow and backflow combustion chamber; the air inlet pipe is connected with the airflow mixing loop through an air inlet jet; a guide baffle is arranged in the air inlet jet; an airflow outlet is formed in the wall body of the combustion chamber or in the top of a spherical arch; and the lower part of the rotational flow and backflow combustion chamber is provided with an outlet section of the combustion device. Key problems of unstable combustion, low combustion intensity, low combustion temperature and the like of low-heat value gas are effectively solved, and the combustion device is low in manufacturing cost and has a simple structure.

Description

technical field [0001] The invention relates to a combustion device for blast furnace hot blast stove and other industrial kilns, in which the gas nozzles in the ring are uniformly distributed and sprayed with air swirling mixed combustion. Background technique [0002] At present, blast furnace hot blast stoves and other industrial furnaces are required to obtain high performance and high benefits under the combustion of low calorific value blast furnace gas from the perspective of energy saving and consumption reduction, and finally achieve the goals of high efficiency, energy saving, environmental protection, and increased production. For this reason, an efficient and enhanced combustion process is very necessary, which relates to the performance of the combustion device. Throughout the various gas combustion devices currently in use, they are mainly based on the mixing, preheating and ignition of gas and air in the combustion space. This mode always has uneven mixing, in...

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Problems solved by technology

[0003] In view of the above situation, in order to overcome the defects of the prior art, the object of the present invention is to propose a combustion device in which the gas nozzles in the ring are evenly distributed on the spray air swirling mixed combustion, which can effectively solve the complex structure of many furnace combustion devices, or the need Large combustion space, and problems such as uneven gas mixing, insufficient combustion, environmental pollution, waste of energy, etc. (especially blast furnace hot blast stoves and kilns that mainly use heat)

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