CN203024146U

CN203024146U - Efficient desulfurization low-nitrogen coal powder burning combination device

Info

Publication number: CN203024146U
Application number: CN 201220626598
Authority: CN
Inventors: 张印; 施正; 张洪
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-23
Filing date: 2012-11-23
Publication date: 2013-06-26
Anticipated expiration: 2022-11-23

Abstract

The utility model discloses an efficient desulfurization low-nitrogen coal powder burning combination device. The device comprises an oil gun, a central air pipe and a volute tank body, wherein the oil gun penetrates into the inner portion of the central air pipe, the outer periphery of the central air pipe is provided with a first time air coal powder pipe, a second time air coal powder pipe and an outer second time air pipe sequentially, the air outlet end of the central air pipe of one end of the volute tank body is provided with a first time air expandion mouth, an inner second time air expansion mouth and an outer second time air expansion mouth outward sequentially, a first time air coal powder inlet of the first air coal powder pipe, an inner second time air coal powder inlet of the second time air coal powder pipe and an outer second time air inlet of the outer second time air pipe are respectively arranged under the volute tank body, a whirling blade is arranged inside the first time air coal powder pipe, and a second time air whirling blade is arranged inside the outer second time air pipe. Air needed by coal powder burning is divided into first time air, inner second time air and outer second time air to blow into a furnace respectively and enable fuel to burn in a staged mode, and therefore production of nitrogen oxide is reduced.

Description

High-efficiency desulfurization hangs down nitrogen coal dust firing set composite

Technical field

The utility model relates to the low nitrogen coal dust firing set composite of a kind of desulfurization.

Background technology

Existing burner is to the SO in flue gas ₂Do not carry out any processing, and the discharging of nitrogen oxide is not had strict control yet.Burner on market mainly is divided into single flow and spiral coal powder burner, is only to reduce the generation of nitrogen oxide by the ignition temperature that reduces coal dust, has greatly hindered the efficiency of combustion of coal dust.

Summary of the invention

Technical problem to be solved in the utility model is to provide the low nitrogen coal dust firing set composite of desulfurization that a kind of combustion efficiency is good, desulfurized effect is good.

The utility model adopts following technical scheme:

a kind of high-efficiency desulfurization hangs down nitrogen coal dust firing set composite, comprise oil gun, central air hose, the spiral case casing, oil gun stretches into central air hose inside, the periphery of central air hose is followed successively by wind coal pipe and Secondary Air coal pipe and outer second air pipe, the port of export of one end central air hose of spiral case casing is respectively outwards a wind extension mouth, the inner second air extension mouth, the outer second air extension mouth, the outer second air air inlet of the wind coal dust import of a wind coal pipe and the inner second air import of Secondary Air coal pipe and outer second air pipe, be separately positioned on the below of spiral case casing

Be provided with spinning disk in a wind coal pipe, be provided with the Secondary Air spinning disk in the outer second air pipe.

Beneficial effect: this device air that coal dust firing is required is divided into wind, inner second air, an outer second air and is blown into respectively in boiler, makes fuel carry out fractional combustion, thereby has reduced the generation of nitrogen oxide; Blowing of this device desulfurizing agent, complete burning feature according to coal dust carries out, with the SO of burning generation ₂Fully react, reach the purpose of desulfurization.The loose sulphur plate of desulfurizing agent plays even conveying.Compared with prior art, the utility model is applied to pulverized-coal fired boiler, and desulfurization can reach 50%; Humidifying device is set after boiler flue again, and desulfurization can reach 80%, can realize that NOx is lower than the discharge standard of 300mg/m3; Do not need the system of separately setting up departments, can desulfurization hang down the integrated burning of nitrogen, all applicable to coal dust inferior, applicable multiple combustion system.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the left view of Fig. 1.

The specific embodiment

With reference to the accompanying drawings, the specific embodiment of the present utility model is described in detail:

a kind of high-efficiency desulfurization hangs down nitrogen coal dust firing set composite, comprise oil gun 1, central air hose 2, spiral case casing 3, oil gun 1 stretches into central air hose 2 inside, the periphery of central air hose 2 is followed successively by wind coal pipe 12 and Secondary Air coal pipe and outer second air pipe, the port of export of one end central air hose 2 of spiral case casing 3 is respectively outwards a wind extension mouth 8, inner second air extension mouth 7, outer second air extension mouth 6, the wind coal dust import 11 of a wind coal pipe 12 and the inner second air import 14 of Secondary Air coal pipe and the outer second air air inlet 15 of outer second air pipe, be separately positioned on the below of spiral case casing 3,

The interior spinning disk 4 that arranges of wind coal pipe 12 is provided with Secondary Air spinning disk 5 in the outer second air pipe.

Coal dust is sent into wind coal pipe 12 one time by a wind, and send into burner hearth with higher eddy flow cleanliness, oil gun 1 oiling, expanding spout is separately set up in ignition at outer second air air inlet 15 places, in guaranteeing, outer second air does not mix in advance, and interior outer second air is tangentially to enter spiral case casing 3, guarantee that simultaneously port outlet air-distribution is even, thereby make burning optimization, and realize low nitrogen burning.Desulfurizing agent utilizes the circulating flue gas air-flow from inner second air import 14, by spiral case casing 3, evenly carries through desulfurizing agent diffuser plate 9, send in stove, produce reaction, sending into by centre wind simultaneously with sulfur dioxide in limiting the furnace chamber temperature province, reduce fire combustion temperature, carry out low nitrogen burning.

Claims

1. a high-efficiency desulfurization hangs down nitrogen coal dust firing set composite, comprise oil gun (1), central air hose (2), spiral case casing (3), it is characterized in that: described oil gun (1) stretches into central air hose (2) inside, the periphery of central air hose (2) is followed successively by a wind coal pipe (12) and Secondary Air coal pipe and outer second air pipe, the port of export of one end central air hose (2) of described spiral case casing (3) is respectively outwards a wind extension mouth (8), inner second air extension mouth (7), outer second air extension mouth (6), the outer second air air inlet (15) of the wind coal dust import (11) of a described wind coal pipe (12) and the inner second air import (14) of Secondary Air coal pipe and outer second air pipe, be separately positioned on the below of spiral case casing (3).

2. the low nitrogen coal dust firing set composite of high-efficiency desulfurization according to claim 1, is characterized in that: be provided with spinning disk (4) in a described wind coal pipe (12), be provided with Secondary Air spinning disk (5) in the outer second air pipe.