CN207622019U - A kind of effective burner of W types radiation - Google Patents

Abstract

A kind of effective burner of W types radiation, including gas pipe, gas-jet, air hose, air nozzle, combustion barrel, spark lever, the air hose is coaxially arranged in parallel with radiant tube, and is communicated with radiant tube, and the rear end of air hose is provided with air nozzle；The gas pipe is co-axially located at the inside of air hose, and the rear end of gas pipe is provided with gas-jet；The gas-jet extends in the combustion barrel being arranged inside radiant tube；The parallel burner central shaft of the spark lever is arranged inside burner, and extends in combustion barrel；Combustion air is First air and Secondary Air in combustion barrel punishment, and First air and main coal gas carry out primary combustion in combustion barrel, and Secondary Air and coal gas carry out second-time burning outside combustion barrel.The utility model is secondary firing, and cmpletely, the energy conversion rate of system is high, and the NOx discharge in flue gas is small for the burning of combustion gas, is suitable for W type radiant tubes.

Description

A kind of effective burner of W types radiation

Technical field

The utility model is related to burners more particularly to a kind of W types to radiate effective burner.

Background technology

Radiant tube heating technique based on indirectly heat principle effectively prevents the oxidation and decarburization on heated object surface, no Burning gases and product pollution can be caused to influence product quality, the radiant tube of early stage is single layer straight pipe type, U-shaped until the beginning of the fifties Radiant tube comes out, and has developed the radiant tubes such as W types, p-type, O-shaped on this basis, and W types radiant tube is radiated relative to other types The advantages that pipe has combustion space big, and heat transfer area reaches, and the thermal efficiency is high, but it is long to influence pipe flame also because tube side is long simultaneously Degree factor is more, poor along radiant tube length direction temperature uniformity, becomes the difficulties of radiation pipe burner tip exploitation.

Radiation pipe burner tip is the core component of radiation tube heater, and the structure design of burner directly determines radiation pipe surface Temperature distribution state, suitable nozzle structure should make radiation inner air tube, the mixing of coal gas reaches intensity appropriate, and coal gas obtains To abundant burning, keep radiant tube surface temperature distribution uniform.

Existing burner is mostly the burner of single-stage combustion, due to the defect of its structure so that coal gas only have passed through primary combustion It burns, and is mingled with unreacted fine coal in main coal gas, the burning of coal gas is insufficient not exclusively, and the heat transference efficiency of system is not Height, radiant tube surface temperature distribution is uneven, and the NOx discharge in smoke components is big, pollutes environment.

Invention content

The purpose of this utility model seeks to provide a kind of W types radiation effective burner, it can make coal gas fully burn, radiation Pipe surface uniformity of temperature profile overcomes disadvantages described above of the existing technology.

In order to solve the above-mentioned technical problem, the utility model is achieved through the following technical solutions：A kind of W types radiant tube With burner, including air hose, air nozzle, gas pipe, gas-jet, spark lever, combustion barrel, it is characterised in that：The sky Tracheae rear end and radiant tube front end are coaxially connected, and the rear end of air hose is provided with air nozzle；The gas pipe coaxial arrangement In the inside of air hose, the rear end of gas pipe is provided with gas-jet；The gas-jet, which extends to, to be arranged inside radiant tube Combustion barrel in；The parallel burner central shaft of the spark lever is arranged inside burner, and extends in combustion barrel.

Preferably：The diameter of the air nozzle is identical as the diameter of radiant tube.

Preferably：The burning tube rear end is communicated with radiant tube.

Preferably：The gas pipe front end is provided with gas entry.

Preferably：The air hose front end is provided with air intake.

Preferably：The gas pipe is provided with a coal gas spray orifice close to the bottommost at gas-jet.

Preferably：The gas-jet is set as reamer shape.

Compared with prior art, gas-jet is set as reamer shape to the utility model, increases the diffusion area of coal gas, makes coal Gas can be sufficiently mixed with air, fully be burnt；Gas pipe is provided with a coal gas spray orifice, coal gas close to the bottommost at gas-jet In pulverized coal particle flowed out from a coal gas spray orifice, avoid pulverized coal particle block gas-jet, influence system worked well, and The pulverized coal particle of outflow can burn outside combustion barrel, improve heat utilization rate；Coal gas carries out second-time burning with Secondary Air, Cmpletely, utilization efficiency of heat energy is high for gas-fired, and the NOx discharge in smoke components is small, free from environmental pollution, will not influence The normal work of system；The utility model is simple in structure, securely and reliably, easy to maintain.

Description of the drawings

Fig. 1 is the structural schematic diagram of the utility model；

In figure：1. air hose, 1-1. air intakes, 1-2. air nozzles, 2. gas pipes, 2-1. gas entries, 2-2. mono- Dant gas spurt, 2-3. gas-jets, 3. spark levers, 4. combustion barrels, 5. radiant tubes.

Specific implementation mode

The utility model is further described below in conjunction with the accompanying drawings；

In the accompanying drawings：A kind of effective burner of W types radiation, including air hose 1, air nozzle 1-2, gas pipe 2, gas-jet 2-3, spark lever 3, combustion barrel 4, it is characterised in that：1 rear end of air hose and 5 front end of radiant tube is coaxially connected, air hose 1 Rear end be provided with air nozzle 1-2；The gas pipe 2 is co-axially located at the inside of air hose 1, and the rear end of gas pipe 2 is set It is equipped with gas-jet 2-3；The gas-jet 2-3 is extended in the combustion barrel 4 being arranged inside radiant tube 5；The igniting 3 parallel burner central shaft of bar is arranged inside burner, and extends in combustion barrel 4.

The diameter of the air nozzle 1-2 is identical as the diameter of radiant tube 5.

4 rear end of combustion barrel is communicated with radiant tube 5.

2 front end of gas pipe is provided with gas entry 2-1.

1 front end of air hose is provided with air intake 1-1.

The gas pipe 2 is provided with a coal gas spray orifice 2-2 close to the bottommost at gas-jet 2-3.

The gas-jet 2-3 is set as reamer shape.

When it is implemented, gas-jet 2-3 is set as reamer shape, the diffusion area of coal gas is increased, coal gas and air are enable It is sufficiently mixed, fully burns；Gas pipe 2 is provided with a coal gas spray orifice 2-2 close to the bottommost at gas-jet 2-3, in coal gas Pulverized coal particle from a coal gas spray orifice 2-2 outflow, avoid pulverized coal particle from blocking gas-jet 2-3, influence system worked well, And the pulverized coal particle flowed out can burn outside combustion barrel 4, improve heat utilization rate；Main coal gas burn from gas pipe 2 Along the axial injection of radiant tube 5, a small amount of coal gas is radially flowed out from a coal gas spray orifice 2-2 along radiant tube 5；Combustion air is along coal 2 periphery of tracheae and the coaxially parallel injection of main coal gas, are divided by combustion barrel 4 for First air and Secondary Air at air nozzle 1-2；Work as master Coal gas is in contact with the First air that surrounding is automatically drawn into, and the coal gas and air molecule on interface diffuse into one another, somewhere reaching Before learning equivalent proportion, spark lever 3 is opened, flame is just formed；Secondary Air between 5 tube wall of combustion barrel 4 and radiant tube is being fired with coal gas It burns and carries out second-time burning outside cylinder 4；With being continually fed into for coal gas and air, compared on long-channel in radiant tube 5, air and coal gas The ignition when spreading mixing, forms the long flame of stable PARALLEL FLOW, in the slow flow process of burning gases, with spoke It penetrates 5 tube wall of pipe and carries out heat exchange, heat is transmitted to tube wall, while the temperature of gas itself continuously decreases, burning waste gas is from radiation 5 other end of pipe is discharged.

The utility model is mainly used in coaxial parallel jet diffusion combustion formula W type radiant tubes, is a energy-efficient The combustion apparatus of low NOx drainage.

Above-described embodiment is only intended to clearly illustrate made by the utility model and describes, and not to the limit of embodiment It is fixed, to those of ordinary skill in the art, other various forms of variations can also be made on the basis of the above description Or change, there is no necessity and possibility to exhaust all the enbodiments, and the obvious variation thus amplified out Or among changing still in the scope of protection of the utility model.

Claims (7)

1. a kind of W types radiate effective burner, including air hose（1）, air nozzle（1-2）, gas pipe（2）, gas-jet（2- 3）, spark lever（3）, combustion barrel（4）, it is characterised in that：The air hose（1）Rear end and radiant tube（5）Front end is coaxially connected, Air hose（1）Rear end be provided with air nozzle（1-2）；The gas pipe（2）It is co-axially located at air hose（1）Inside, Gas pipe（2）Rear end be provided with gas-jet（2-3）；The gas-jet（2-3）It extends to and is arranged in radiant tube（5）It is internal Combustion barrel（4）It is interior；The spark lever（3）Parallel burner central shaft is arranged inside burner, and extends to combustion barrel（4）It is interior.

2. a kind of W types as described in claim 1 radiate effective burner, it is characterised in that：The air nozzle（1-2）It is straight Diameter and radiant tube（5）Diameter it is identical.

3. a kind of W types as described in claim 1 radiate effective burner, it is characterised in that：The combustion barrel（4）Rear end and spoke Penetrate pipe（5）It communicates.

4. a kind of W types as described in claim 1 radiate effective burner, it is characterised in that：The gas pipe（2）Front end is set It is equipped with gas entry（2-1）.

5. a kind of W types as described in claim 1 radiate effective burner, it is characterised in that：The air hose（1）Front end is set It is equipped with air intake（1-1）.

6. a kind of W types as described in claim 1 radiate effective burner, it is characterised in that：The gas pipe（2）Close to coal gas Nozzle（2-3）The bottommost at place is provided with a coal gas spray orifice（2-2）.

7. a kind of W types as described in claim 1 radiate effective burner, it is characterised in that：The gas-jet（2-3）Setting For reamer shape.