Plasma low-nitrogen combustion device

Abstract

The invention relates to a plasma low-nitrogen combustion device which comprises a gasifier, a low-nitrogen combustion device, a reactor and a plasma generator, wherein the outlet of the gasifier is connected with the low-nitrogen combustion device through a first branch and is connected with the plasma generator through a second branch; the low-nitrogen combustion device is connected with a firstinlet of the reactor through a second pipeline; the plasma generator is connected with a second inlet of the reactor through a third pipeline and is connected with a plasma power supply; the reactoris further provided with an exhaust port; the low-nitrogen combustion device is provided with a combustion chamber and a shell; a first air feeding hole is formed in the front end of the combustion chamber in the shell; and a treatment device is arranged at the gap between the shell and the combustion chamber and comprises an ignition cabinet, a second air feeding cavity and a water steam condensing cavity. The plasma low-nitrogen combustion device is simple in structure; plasma directly participates in the system reaction to reduce emission of NOx; ignition combustion is precise to avoid a potential safety hazard; and the blowing-in gas is uniformly mixed to improve the treatment efficiency, and energy conservation and environmental protection are realized.

Description

technical field [0001] The invention belongs to the technical field of low-nitrogen combustion, and in particular relates to a plasma low-nitrogen combustion device. Background technique [0002] Currently, NO X The technical measures of emission can be divided into two categories according to the position of action. The first category is denitrification in the furnace, and through various technical means to control the combustion process to reduce NO X The second type is tail off, which is the NO generated in the tail flue gas X reduction. In the existing technology, most of the methods of low nitrogen combustion technology and flue gas denitrification are used to reduce NO X emissions, but there are differences in low-nitrogen combustion technologies, NO X Emission concentrations also vary widely. [0003] Plasma low-nitrogen combustion technology uses plasma to directly ignite pulverized coal in the burner, which can save a lot of boiler start-up oil. The plasma pul...

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Problems solved by technology

The plasma pulverized coal burner using this technology realizes the internal combustion of pulverized coal, and at the same time combines with the overall low-nitrogen combustion technology of the air, which can greatly reduce the NOx of the boiler without reducing the efficiency of the boiler. X emissions, but the existing plasma low-nitrogen combustion technology produces a reaction zone temperature as high as 1500 °C, and some NO remains in the low-nitrogen combustion device X discharge system, causing serious environmental pollution, which not only causes energy waste, but also is not conducive to environmental friendliness

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