Garbage incinerator with small NOx pollutants

A garbage incinerator and an incinerator technology are applied to garbage incineration. In the field of flue gas recirculation, it can solve the problems of not giving full play to the effect of flue gas recirculation technology, the difficulty of secondary air to meet the requirements of oxygen regulation, and the lack of in-depth research on flue gas recirculation technology, so as to achieve convenient and effective regulation, save space and cost, and reduce the pressure of denitrification Effect

CN112503535APending Publication Date: 2021-03-16EVERBRIGHT ENVIRONMENTAL TECH CHINA CO LTD +1
12 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-03-16

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention provides a garbage incinerator with small NOx pollutants. The garbage incinerator comprises an incineration fire grate which is used for incinerating garbage located on an incineration fire grate, wherein burning flue gas generated by incineration is discharged from an incinerator opening through an incinerator throat area, a primary air device which is used for feeding primary air below the incineration fire grate to provide oxygen for incineration, a secondary air device which is used for providing secondary air into the incinerator through a secondary air nozzle located in theincinerator throat area so as to adjust the oxygen amount in the garbage incinerator, a first recirculating flue gas nozzle which is arranged with a secondary air nozzle in a staggered manner, and isused for feeding recirculating flue gas into the incinerator to be mixed with combustion flue gas in the incinerator, and a second recirculating flue gas nozzle which is located on a rear arch abovethe incineration fire grate and used for feeding recirculating flue gas into the combustion area to be mixed with the combustion flue gas so as to reduce the oxygen content in the incinerator. According to the garbage incinerator, the generation amount of NOx pollutants is low, stable and reliable operation is achieved, the performance of the incinerator is fundamentally improved, and the SCR denitration pressure is reduced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present application relates to the technical field of environmental protection, and more specifically relates to waste incineration. Background technique

[0002] At present, there are few researches and applications of low NOx pollutants based on waste incinerators, especially the research on flue gas recirculation technology is not deep enough. It is easy to cause condensation corrosion; or only select a certain position to install the recirculation nozzle, which does not fully exert the effect of the flue gas recirculation technology. Waste incineration mostly relies on post-furnace denitrification technologies such as SNCR, SCR, etc. The SNCR denitrification process has limited efficiency, and the SCR denitrification process has high investment and operating costs, especially in terms of catalyst regeneration. Contents of the invention

[0003] The present application has been made in consideration of the above-mentioned problems. The prese...

Examples

Embodiment Construction

[0028] In order to make the objects, technical solutions, and advantages of the present application more apparent, exemplary embodiments according to the present application will be described in detail below with reference to the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. It should be understood that the present application is not limited by the exemplary embodiments described here. Based on the embodiments of the present application described in the present application, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present application.

[0029] Incinerator incineration treatment is a widely used waste treatment technology at present, which can realize resource utilization and reduction, but there are problems in pollutant emission control during operation. ...