CN2550652Y

CN2550652Y - High efficiency environment protection burner

Info

Publication number: CN2550652Y
Application number: CN 02214566
Authority: CN
Inventors: 刘超杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-30
Filing date: 2002-04-30
Publication date: 2003-05-14
Anticipated expiration: 2012-04-30

Abstract

The utility model discloses a high efficiency environment-friendly combustor, comprising a gas injection nozzle, a fuel injection nozzle, fire bowl bricks, flame path bricks and a butterfly valve. The utility model is characterized in that a spiral flow plug is arranged in a jet hole of a gas injection nozzle, a swirler is arranged at the head of the nozzle; spherical sealing is adopted between an atomizer inside front end of the gas injection nozzle and a sleeve and the nozzle; an advection air hole is arranged on the flame path brick; a spiral flow air hole is arranged on the fire bowl brick. The utility model has the advantages that the fuel injection nozzle, the gas injection nozzle, the air register and the flame path of the burner in the prior art are improved; the atomized particle rate is reduced from the average grain size of 85 Mum to 50 Mum; the atomization performance is improved; the defect of oil leakage of fuel injection nozzle is overcome; the service life is extended to one and a half year; the excess air coefficient is reduced from 1.08 to 1.15; the combustion efficiency is increased by 5%; the NOx emission is reduced from more than 300mg/m to less than 140 mg/m, which is far lower than the national standard.

Description

The efficient and environment-friendly type burner

Affiliated technical field

The utility model belongs to the technical field of burner of petrochemical industry tubular heater, Industrial Stoves, various incinerators, and what relate generally to is a kind of efficient and environment-friendly type burner.

Background technology

Burners in prior (as Figure 1-3) generally all is made up of combustion gas nozzle 1, fuel nozzle 2,

brazier brick

3,4 four parts of quirk brick, because the shower nozzle hermetically-sealed construction imperfection of fuel nozzle, all adopt pipe thread seal or pad 10 sealings between shower nozzle 8, atomizer 9, the sleeve pipe 7, like this, when under hot environment, using, through after the repeated disassembled and assembled several times, cause leakage of oil easily; The spray orifice 11 of existing gas nozzle 1 is a straight hole, and the hybrid mode of combustion gas and combustion air is flat flow or skew crossing type, and the version of this gas nozzle makes that the empty mixing of combustion is slow and inhomogeneous, can not control the length and the shape of flame effectively; Existing air distribution mode all adopts once or the secondary air distribution, and combustion air divides once or secondary enters quirk and mixes with burning, and this air distribution mode and quirk structure make the efficiency of combustion reduction of fuel, and NOx content overproof in the flue gas, cause bigger pollution to environment.

Summary of the invention

The purpose of this utility model promptly produces thus, proposes a kind of efficient and environment-friendly type burner.This burner is good seal performance, long service life not only, and can effectively control the length of flame and shape, improves efficiency of combustion, reduces the NOx discharging.

For achieving the above object, the utility model is achieved through the following technical solutions: it is made up of gas nozzle, fuel nozzle, brazier brick, quirk brick and butterfly valve, is provided with the eddy flow plug in the spray orifice of gas nozzle, and nozzle head is provided with cyclone; Be sealed into ball face sealing between atomizer in the fuel nozzle front end shower nozzle and sleeve pipe and the shower nozzle; On the quirk brick, be provided with advection wind hole; On brazier brick, be provided with eddy flow wind hole.

The utility model is by the improvement to burner intermediate fuel oil nozzle, gas nozzle, air register and quirk, can make the atomizing particle degree by original average grain diameter 85 μ m, reducing to average grain diameter is 50 μ m, improved atomization, solved the leakage of oil problem of fuel nozzle, and with its service life by extending to a year and a half in original 1 year.Cross air coefficient and reduce to 1.08 by original 1.15, efficiency of combustion improves 5%, and the NOx discharge capacity is reduced to＜the 140mg/m phase by original＞300mg/m, makes the NOx discharging be significantly less than industry standard.

Description of drawings

The utility model has following accompanying drawing:

Accompanying drawing 1 is existing burner structure schematic diagram.

Accompanying drawing 2 is existing burner gas nozzle partial structurtes schematic diagram.

Accompanying drawing 3 is existing burner fuel nozzle partial structurtes schematic diagram.

Accompanying drawing 4 is the utility model structural representation.

Accompanying drawing 5 is the utility model burner gas nozzle partial structurtes schematic diagrames.

Accompanying drawing 6 is the utility model burner fuel nozzle partial structurtes schematic diagrames.

Among the figure, 1, gas nozzle, 2, fuel nozzle, 3, brazier brick, 4, the quirk brick, 5, butterfly valve, 6, cyclone, 7, sleeve pipe, 8, shower nozzle, 9, atomizer, 10, pad, 11, spray orifice, 12, the eddy flow plug, 13, advection wind hole, 14, eddy flow wind hole.

The specific embodiment

In conjunction with the accompanying drawings, it is as follows to provide embodiment of the present utility model:

As shown in Figure 4, present embodiment is on the architecture basics of the existing burner that is made of gas nozzle 1, fuel nozzle 2, brazier brick 3, quirk brick 4 and butterfly valve 5, in each spray orifice 11 of gas nozzle 1, be equipped with eddy flow plug 12 (as shown in Figure 5), this eddy flow plug 12 is a column eddy flow plug, its effect is to make combustion gas produce little eddy flow in jet process, combustion is empty to be mixed thereby strengthen, and by cooperating with gaseous-pressure, effectively controls the length of flame and shape.Be provided with umbrella cyclone 6 (or tubbiness etc.) at the head of gas nozzle 1, make combustion air produce eddy flow wind.For solving the leakage of oil problem of fuel nozzle 2, present embodiment is ball face sealing (as shown in Figure 6) with the Seal Design between atomizer 9 and sleeve pipe 7 and the shower nozzle 8 in the fuel nozzle 2, select the more material of high temperature oxidation resisting, at high temperature the life-span prolongs to make it, through after the repeated disassembled and assembled, still can keep its sealing property, guarantee that it is oil-proof in using.The efficiency of combustion that exists at existing air distribution mode and quirk structure is lower, NOx content overproof in the flue gas, cause the drawback of bigger pollution to environment, present embodiment is provided with advection wind hole 13 on quirk brick 4, on brazier brick 3, be provided with eddy flow wind hole 14, thereby make the distribution of combustion air meticulousr, divide for advection wind that enters by

gas nozzle

1 and 2 of fuel nozzles and the eddy flow wind that enters by brazier brick 3 forward spin flow wind holes 14 wind; With secondary air separating for by oblique wind that enters between brazier brick 3 and the quirk brick 4 and the advection wind that enters by advection wind hole 13 on the quirk brick 4, and be respectively equipped with butterfly valve 5 at first and second air inlet position, this butterfly valve 5 is the twin shaft butterfly valve, to primary and secondary air difference independent regulation, reasonable distribution air distributions at different levels improve efficiency of combustion, eliminate the localized hyperthermia district of flame, thereby the output that suppresses NOx reduces the discharging of NOx, makes the Nox discharging be significantly less than industry standard.

Claims

1, a kind of efficient and environment-friendly type burner, comprise gas nozzle (1), fuel nozzle (2), brazier brick (3), quirk brick (4) and butterfly valve (5), it is characterized in that: be provided with eddy flow plug (12) in the spray orifice (11) of described gas nozzle (1), nozzle head is provided with cyclone (6); Be sealed into ball face sealing between atomizer (9) in described fuel nozzle (2) the front end shower nozzle (8) and sleeve pipe (7) and the shower nozzle (8); On described quirk brick (4), be provided with advection wind hole (13); On described brazier brick (3), be provided with eddy flow wind hole (14); Described butterfly valve (5) is separately positioned on the air inlet position.

2, according to the described efficient and environment-friendly type burner of claim 1, it is characterized in that: described eddy flow plug (12) is a column eddy flow plug.

3, according to the described efficient and environment-friendly type burner of claim 1, it is characterized in that: described cyclone (6) is the umbrella cyclone.

4, according to the described efficient and environment-friendly type burner of claim 1, it is characterized in that: described butterfly valve (5) is the twin shaft butterfly valve.