Open-type roasting furnace heating curve and furnace moving operational method

Abstract

The invention relates to an open-type roasting furnace heating curve and a furnace moving operational method. By adopting the operational method for shifting a combustion frame of a roasting furnace in advance, alternate operation of a sixth chamber and a fifth chamber of a heating furnace is achieved, a preheating furnace chamber is heated in a forcing mode, a variation trend of the temperature of preheating section tar separated out of heating-flue flue gas of the furnace chamber is changed, the heating-flue temperature of a downstream preheating furnace chamber is increased, the fact that the ignition temperature of the heating-flue flue gas is achieved when the tar is separated out is ensured, the tar can be combusted sufficiently, the flue gas discharged out of a roasting furnace system basically does not contain the tar, the requirements for direct emission and environment protection are met, pressure on flue gas treatment of a purification system is relieved, and the problem of tar accumulation of a smoke drainage system is solved. Meanwhile, complete combustion of the tar can lower the energy consumption level for unit product of the roasting furnace. By adopting the heating curve and improving the temperature level of the preheating section heating-flue, the system reaches heat preservation temperature in advance, the heat preservation time of the system is prolonged, and evenness of the temperature of roasted products is improved.

Description

technical field [0001] The present invention relates to a method for raising the temperature of an open roasting furnace and an operation method for moving the furnace, in particular to an open roasting furnace during the roasting process by changing the operation system of moving the furnace, adjusting the temperature rise curve, increasing the temperature of the preheating furnace chamber, and ensuring the tar Fully burn in the flue, so that the flue gas exhausted by the roasting furnace system basically does not contain tar. The heating method and the furnace moving operation method. Background technique [0002] During the roasting process of the anode roaster, the furnace shift cycle of about 30 hours is usually used, and the system configuration uses three preheating furnace chambers, three forced heating furnace chambers and six to seven cooling furnace chambers to operate. With the increase of the operation time of the roasting furnace and the increase of the deforma...

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Problems solved by technology

[0003] 1. The air leakage in the preheating furnace chamber increases, and the temperature of the fire path is low

[0004] 2. The air leakage increases, resulting in insufficient negative pressure in the system, and the temperature rise of the carbon block cannot keep up with the normal temperature rise curve

[0005] 3. The temperature of the flue is low, which cannot guarantee the complete combustion of the tar. The tar sticks to the pipe wall and valve of the exhaust system, which not only increases the difficulty of cleaning, but also increases the purification pressure of the purification system.

[0006] 4. Incomplete combustion of tar causes energy waste and increases system energy consumption

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