Device for improving combustion capacity of thermal desorption tar gas of annular furnace and heating method

Abstract

The invention discloses a device for improving combustion capacity of thermal desorption tar gas of an annular furnace and a heating method. The device comprises the annular furnace (14), wherein a feed port (15) and a discharge port (16) are arranged on the annular furnace (14), and the annular furnace (14) is divided into a preheating zone (13), a heating zone (12) and a soaking zone (11). The device is characterized in that a fan (1) and a warm air duct are respectively communicated and connected with the preheating zone (13) and the soaking zone (11) by a heat exchanger (2), the inner wall and the outer wall of the annular furnace are provided with preheating nozzles (10) and soaking nozzles (9), the fan (1) is communicated and connected with the heating zone (12) by a cold air pipe network (3), the inner wall and the outer wall of the annular furnace in the heating zone (12) are provided with a thermal storage box (7) of thermal storage nozzles and thermal desorption tar gas nozzles (8), wherein the thermal storage box (7) of the thermal storage nozzles and the thermal desorption tar gas nozzles (8) are arranged in a matching way so as to form independent thermal storage nozzles, and an electric control valve is arranged on the cold wind pipe network (3); in addition, one fan is adopted to be connected with different pieces of thermal equipment by the pipe network, so that the capacity of the annular furnace is substantially increased under the condition that the requirements on heating various pipe blanks by the annular furnace are met.

Description

Technical field: [0001] The invention relates to the technical field of thermal engineering, in particular to a device and a heating method for improving the production capacity of detarred coal gas from the combustion heat of an annular furnace. technical background: [0002] At present, the fuel used in the ring furnace is relatively rich, including natural gas and various coal-based gases, among which thermal detarred gas is one of the fuels for heating the tube billet in the ring furnace. The heat taken away by the exhaust gas discharge of the traditional annular furnace heating process usually accounts for more than 50% of the fuel input. Even if the air heat exchanger is installed, the energy saving rate is only between 15% and 25%, and there are still 30% to 50%. % of the heat is discharged into the atmosphere with the exhaust gas, so the productivity (or bottom strength) of the annular furnace is low. [0003] In recent years, regenerative combustion technology has ...

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Problems solved by technology

[0008] The invention mainly solves the problem of low production capacity of the existing ring furnace before heating the tube billet, but according to the different thermal processes of the ring furnace and the characteristics of multiple combustion methods for the thermal detarred gas, the thermal detarred gas can be burned in a conventional manner Simultaneously with the regenerative combustion method on the annular furnace, under the premise of making full use of the hot detarred gas resources, the production capacity of the annular furnace is greatly increased, and the thermal efficiency of the annular furnace combustion heat detarred gas is improved

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