Chain grate secondary combustion furnace

The invention discloses a chain grate secondary combustion furnace, and relates to coal-fired furnaces. In the background, the outstanding defects of all chain grates are weight in pollution dischargeso as to become a main pollution control item. The invention aims to change the secondary combustion black smoke of the structure of the arch, the combustion efficiency is reduced, and emission is reduced. The scheme is characterized that an air supplementing pipe (2) is added, a vertical partition plate (12) is arranged in a front arch so as to divide the front arch into a front chamber and a rear chamber, the front chamber is a ignition chamber (section with smoke), and the rear chamber is a combustion chamber (14); a flat partition plate (9) is arranged on the front portion of the verticalpartition plate, so that the ignition chamber is divided into an upper layer and a lower layer, the lower layer is the ignition chamber (10), and the upper layer is a baffling channel (8) (having a disturbance function). A ch