Low-NOx dry and wet deslagging dual-swirl coal-dust combustion device for

Abstract

The invention relates to a low-NOx dry and wet deslagging dual-swirl coal-dust combustion device, which comprises a combustor assembly, wherein a breaking-out opening is arranged on the front end of the combustor assembly; the back end of the combustor assembly is connected with a secondary air room; and a primary air or coal-dust nozzle of the combustor assembly is arranged in the secondary air room. The low-NOx dry and wet deslagging dual-swirl coal-dust combustion device is characterized in that the combustor assembly is covered by a working lining; the working lining is covered by a cooling water suite; a rotational-flow vane grid is arranged on the primary air or coal-dust nozzle; and a primary air or coal-dust feeding device is connected with the primary air or coal-dust nozzle. The low-NOx dry and wet deslagging dual-swirl coal-dust combustion device has the advantages of fully combustion, remarkable energy saving and emission reduction effect and long service life. At present, tens of thousands of 2 to 35 tons of steam or hot-water industrial boilers, furnaces and kilns are used in China. The boilers, the furnaces and the kilns are improved according to the low-NOx dry and wet deslagging dual-swirl coal-dust combustion device to generate great emission-reduction social benefits and obtain amazing energy-saving economic achievements.

Description

technical field [0001] The invention relates to a low-NOx solid-liquid slagging double-swirl pulverized coal combustion equipment, which is suitable for 2-35 tons of steam and hot water boilers, furnaces, forging, steelmaking, chemical industry, textile, papermaking, road and bridge mixing stations and refrigeration plants. The utility model relates to a combustion device for heat energy demanded by various industrial productions such as aggregate heating, and belongs to the technical field of pulverized coal burners. Background technique [0002] The layer-fired boiler is a furnace type widely used in industrial boilers at present. It is composed of pressure parts, chain grate and other main components. Low burn rate, q 4 Large loss, waste of coal, exhaust smoke contains NOx, SO 2 , High dust concentration, polluting the environment. In order to solve these problems, the applicant once applied for a utility model patent entitled "Axial Vortex Pulverized Coal Burner with ...

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Problems solved by technology

On June 11, 2007, he applied for an invention patent (application number 200710110815.5) called "Low NOx Multi-Tube Axial Vortex Pulverized Coal Burner" on June 11, 2007, but these two burners still have the following disadvantages: 1. Due to the high combustion temperature of the burner, it affects the service life of the burner

Although the pulverized coal burner adopts the combustion method of two winds, it is found through practice that there are still the following defects: 1. Since the load of industrial boilers changes frequently and fluctuates greatly during the operation, the patented product does not affect the load during application. The adaptability to changes is not good; 2. The slag discharge is not smooth, and it is easy to climb the slag at the slag discharge port for a long period of time, resulting in blockage of the slag port or even shutdown of the furnace

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