Ash removal method for radiant coil of fuel oil heating furnace

Abstract

The invention relates to an ash removal method, in particular to an ash removal method for a radiant coil of a fuel oil heating furnace, comprising the following processing steps: firstly cutting offthe fuel oil supply of the fuel oil heating furnace to stop the fuel oil heating furnace from burning, secondly opening an upper-end air door of the fuel oil heating furnace entirely, thirdly taking steam as motive power, sending water in a plurality of water inlet tubes communicated at the bottom of the fuel oil heating furnace, and removing deposit ash on outer wall of the radiant coil in a hearth depending on the shock wave generated by evaporating water in the hearth. After adopting the ash removal method, the deposit ash on the radiant coil of the fuel oil heating furnace can be easily removed by the shock wave generated by evaporating water after entering the hearth, thereby ensuring that a production system does not stop and effectively solving the difficult problem of ash removal for the radiant coil of the fuel oil heating furnace, and improving thermal efficiency of the heating furnace. In addition, the method has simple operation, practicality and small investment, can reduce labor intensity, and is beneficial to body health of workers.

Description

technical field [0001] The invention relates to a method for cleaning dust, in particular to a method for cleaning a furnace pipe in a radiant section of a fuel-fired heating furnace. Background technique [0002] At present, the heating furnace is a commonly used heating equipment in the chemical industry and other industries. Its fuel is mainly fuel oil, natural gas, etc., and its working characteristic is to use the burning flame to heat the radiant section vertically arranged in the furnace in the form of heat radiation. furnace tube. For the heating furnace using fuel oil, due to the presence of ash in the fuel oil, the ash is continuously deposited on the outer wall of the radiant section furnace tube in the heating furnace during the combustion process, and the long-term ash deposition makes the heat of the radiant section furnace tube The resistance increases, which reduces the thermal efficiency of the furnace and wastes energy; when the ash content on the furnace ...

AI Technical Summary

Problems solved by technology

For the heating furnace using fuel oil, due to the presence of ash in the fuel oil, the ash is continuously deposited on the outer wall of the radiant section furnace tube in the heating furnace during the combustion process, and the long-term ash deposition makes the heat of the radiant section furnace tube The resistance increases, which reduces the thermal efficiency of the furnace and wastes energy; when the ash on the furnace tube in the radiant section reaches a certain thickness, the production system must be stopped for manual ash removal, which cannot guarantee the continuous operation of the production system and increases the start-up and shutdown of the production system and maintenance costs (when using fuel oil with a large ash content, it must be stopped once every two months to clean the furnace tubes in the radiant section); moreover, manual cleaning is used, the working environment is poor, and the labor intensity is high. Good for workers' health

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