CN210832024U

CN210832024U - Secondary air arrangement structure of grate garbage incinerator

Info

Publication number: CN210832024U
Application number: CN201921658616.2U
Authority: CN
Inventors: 徐德军; 韩瑞锋; 王智超
Original assignee: Wuxi Huaguang Boiler Co Ltd
Current assignee: Wuxi Huaguang Environment and Energy Group Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-06-23
Anticipated expiration: 2029-09-30

Abstract

The utility model relates to a msw incineration stove technical field specifically is a grate waste incinerator's overgrate air arrangement structure, its formation that can effectively restrain NOx, and it is including burning furnace, its characterized in that, the preceding arch of burning furnace and back arch punishment do not are provided with upper air secondary air pipe and lower floor's flue gas secondary air pipe, let in the air overgrate air in the upper air secondary air pipe, the intraductal flue gas overgrate air that lets in of lower floor's flue gas secondary air.

Description

Secondary air arrangement structure of grate garbage incinerator

Technical Field

The utility model relates to a waste incinerator technical field specifically is a grate waste incinerator's overgrate air arrangement structure.

Background

The environmental protection is a basic national policy of China, and the living standard of people is continuously improved. The increasing discharge of municipal domestic waste and industrial waste causes increasingly serious environmental problems. The garbage incineration has the comprehensive advantages of reduction, harmlessness and recycling. The grate waste incinerator is widely used as a main mode for treating waste, wherein the standard emission of flue gas is required to meet the requirement of environmental protection, along with the improvement of living standard, the calorific value of the waste entering the incinerator is higher and higher, the temperature of the flue gas at the outlet of the incinerator is also higher and higher, so that the quantity of NOx generated is also increased continuously, and although secondary air is introduced into the existing grate waste incinerator, the requirement of temperature regulation cannot be met, so that a large amount of NOx is discharged.

Disclosure of Invention

In order to solve the problem that current NOx production is many, the utility model provides a grate waste incinerator's overgrate air arrangement structure, its formation that can effectively restrain NOx.

The technical scheme is as follows: a secondary air arrangement structure of a grate garbage incinerator comprises the incinerator and is characterized in that an upper layer air secondary air pipe and a lower layer smoke secondary air pipe are arranged at the front arch and the rear arch of the incinerator respectively, air secondary air is introduced into the upper layer air secondary air pipe, and smoke secondary air is introduced into the lower layer smoke secondary air pipe.

The incinerator is further characterized in that protective plates are arranged outside the furnace walls at the front arch and the rear arch of the incinerator respectively, and the upper layer air secondary air pipe and the lower layer flue gas secondary air pipe are fixed on the protective plates;

the upper air secondary air pipe is horizontally arranged or obliquely arranged downwards, and the included angle between the upper air secondary air pipe and the horizontal plane is 0-25 degrees;

the lower layer flue gas secondary air pipe is horizontally arranged or obliquely arranged downwards, and the included angle between the lower layer flue gas secondary air pipe and the horizontal plane is 0-30 degrees.

Adopt the utility model discloses afterwards, two-layer overgrate air arranges about, and the upper strata adopts the air overgrate air, and the lower floor adopts the flue gas overgrate air, can make the flue gas temperature move at reasonable within range according to burning the proportion of burning furnace export flue gas temperature real-time adjustment air overgrate air and flue gas overgrate air, and the original emission of NOx has been guaranteed at reasonable scope in effectual suppression NOx's formation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

As shown in figure 1, a grate waste incinerator's overgrate air arrangement structure, it is including burning furnace 1, the preceding department of encircleing of burning furnace 1 is provided with preceding upper air secondary air pipe 2 and preceding wall lower floor flue gas secondary air pipe 3, the department of encircleing is provided with back upper air secondary air pipe 4 and back wall lower floor flue gas secondary air pipe 5 on the back, let in the air overgrate air in preceding upper air secondary air pipe 2 and the back wall upper air secondary air pipe 4, let in the flue gas overgrate air in preceding wall lower floor flue gas secondary air pipe 3 and the back wall lower floor flue gas secondary air pipe 5.

The external portion of the furnace wall of the front arch and the rear arch of the incinerator 1 is provided with a front guard plate and a rear guard plate respectively, a front wall upper layer air secondary air pipe 2 and a front wall lower layer flue gas secondary air pipe 3 are fixed on the front guard plate, and a rear wall upper layer air secondary air pipe 4 and a rear wall lower layer flue gas secondary air pipe 5 are fixed on the rear guard plate.

The front wall upper air secondary air pipe 2 and the back wall upper air secondary air pipe 4 are horizontally arranged or obliquely arranged downwards, the included angle between the front wall upper air secondary air pipe and the horizontal plane is 0-25 degrees, and the front wall upper air secondary air pipe and the back wall upper air secondary air pipe are horizontally arranged in the embodiment.

The front wall lower layer flue gas secondary air pipe 3 and the rear wall lower layer flue gas secondary air pipe 5 are horizontally arranged or obliquely arranged downwards, the included angle between the front wall lower layer flue gas secondary air pipe and the horizontal plane is 0-30 degrees, the front wall lower layer flue gas secondary air pipe and the horizontal plane are obliquely arranged downwards, and flue gas secondary air can enter more quickly.

In the figure, 6 is a feed hopper, 7 is a grate and 8 is a slag discharge port.

Claims

1. A secondary air arrangement structure of a grate garbage incinerator comprises the incinerator and is characterized in that an upper layer air secondary air pipe and a lower layer smoke secondary air pipe are arranged at the front arch and the rear arch of the incinerator respectively, air secondary air is introduced into the upper layer air secondary air pipe, and smoke secondary air is introduced into the lower layer smoke secondary air pipe.

2. The secondary air arrangement structure of a grate stoker garbage incinerator according to claim 1, wherein said furnace walls at the front arch and the rear arch of said incinerator are provided with guard plates at the outer portions thereof, respectively, and said upper air secondary duct and said lower flue gas secondary duct are fixed to said guard plates.

3. The secondary air arrangement structure of a grate stoker garbage incinerator according to claim 1, wherein said upper air secondary duct is arranged horizontally or inclined downwardly with an angle of 0-25 ° to the horizontal.

4. The secondary air arrangement structure of a grate stoker garbage incinerator according to claim 1, wherein said lower flue gas secondary air pipe is arranged horizontally or inclined downward, and the included angle with the horizontal plane is 0-30 °.