CN208779469U - A kind of soot cleaning of coal-fired boiler device of burning mixed mud - Google Patents

Abstract

The utility model discloses a kind of soot cleaning of coal-fired boiler device of burning mixed mud, is configured with weak quick-fried deashing unit and sound wave ashing unit；Weak quick-fried deashing unit includes sequentially connected air distributing device, explosion cavity and spherical surface wave producer；Mixed gas chamber and the first flow control module for controlling compressed air and imflammable gas inlet and entrance ratio in mixed gas chamber are set in air distributing device, and are had for introducing the first air inlet of compressed air and being used for and introduce the second air inlet of imflammable gas；Set up an office firearm in explosion chamber body；Spherical surface wave producer has impact wave output terminal；Sound wave ashing unit includes sequentially connected pressure pump and sonic generator；Waveguide pipe built in sonic generator, and there is sound wave output end.The device is able to achieve effective deashing to the coal-burning boiler of coal-burning power plant's burning mixed mud by the coupling application of weak quick-fried deashing unit and sound wave ashing unit.

Description

A kind of soot cleaning of coal-fired boiler device of burning mixed mud

Technical field

The utility model belongs to soot cleaning of coal-fired boiler technical field, the in particular to coal-fired pot run after coal-fired burning mixed mud The cleaning of furnace dust stratification.

Background technique

Due to, containing non-combustible ingredient, being referred to as ash content in fuel, ash content is precipitated during boiler combustion, and one Divide and be deposited on heating surface, another part takes boiler out of with flue gas.The dust stratification of heating surface can be such that boiler thermal efficiency reduces, and increase energy Consumption, shortens the service life of boiler.

The characteristic of sludge affect mix burn mixture fuel characteristic, and fuel characteristic influence boiler combustion stability, Efficiency of combustion, slagging etc..Ash content in sludge is mainly heavy metal element, after boiler oil mixes a certain amount of sludge, combustion Material characteristic will change, it may be assumed that 1. soot particle is smaller after mud granule burning；2. the ash fusion point of sludge is molten lower than the ash of coal Point.Therefore, causing fuel ash to melt characteristic becomes medium slagging by slight slagging, and a possibility that slagging greatly increases.And it fires at present Coal burning boiler mostly uses greatly steam sootblower, but the characteristics of due to structure and working media, in addition Effect of Hyperthermic Environment, soot blower Gun barrel it occur frequently that bite, failure, leakage vapour phenomena such as, equipment failure rate is very high, and maintenance workload is very big.

With the landing of National Energy Board's pilot project, sludge coupled electricity-generation project will largely carry out, resulting pot Furnace heating surface coking problem will be the problem that must be faced in technique, it is necessary to special for the fuel of the coal-burning boiler of burning mixed mud Property, research and develop novel removing ash of boiler device.

Utility model content

For the heating surface of coal-fired boiler deashing for solving the problems, such as burning mixed mud, the present invention provides the novel burning mixed mud of one kind Soot cleaning of coal-fired boiler device is realized by the coupling application of weak quick-fried deashing unit and sound wave ashing unit and mixes burning dirt to coal-burning power plant Effective deashing of the coal-burning boiler of mud.

Specific technical solution is as follows:

A kind of soot cleaning of coal-fired boiler device of burning mixed mud is configured with weak quick-fried deashing unit and sound wave ashing unit；It is weak quick-fried Deashing unit includes sequentially connected air distributing device, explosion cavity and spherical surface wave producer；Set in air distributing device mixed gas chamber and For controlling the first flow control module of compressed air and imflammable gas inlet and entrance ratio in mixed gas chamber, and have There is the first air inlet for introducing compressed air and is used for and introduces the second air inlet of imflammable gas；It is set in explosion chamber body Igniter；Spherical surface wave producer has impact wave output terminal；Sound wave ashing unit includes sequentially connected pressure pump and sound wave hair Raw device；Waveguide pipe built in sonic generator, and there is sound wave output end.

As a preferred embodiment, which further includes for providing the air supply unit of compressed air, air supply unit configuration There is gas compressing apparatus, and there is the first gas source output being connected to the first air inlet of the air distributing device in weak quick-fried deashing unit End.

As a preferred embodiment, air supply unit is also configured with the filter device for removing the impurity in compressed air.

As a preferred embodiment, air supply unit is also configured with the control mould of the second flow for controlling gas source output quantity Block.

As a preferred embodiment, air supply unit also has the second gas source connecting with the pressure pump in sound wave ashing unit Output end, and the third of gas source export ratio and output quantity for distributing the first source output end and the second source output end Flow-control module.

The utility model has the advantages that

In sonic soot blowing unit, enter sound wave after compressed air to be become to the air of elevated pressures by pressure pump Then device is guided the sound wave of generation to the position for needing soot blowing by the waveguide pipe built in sonic generator.Since sound wave has Have reflection, diffraction, diffraction characteristic, no matter how the panel-pipe of heating surface in boiler is arranged, as long as in the useful effect model of sound wave In enclosing, sound wave can remove dust stratification, and ash disposal range is big.

In weak quick-fried soot blowing unit, explosion chamber body is entered after compressed air and imflammable gas are mixed according to a certain percentage Light a fire weak quick-fried, then is directed toward the position for needing soot blowing by spherical surface wave producer guidance shock wave.Due to the energy of shock wave Compare concentration, and gluing on surface can be made with the wider flow-induced vibration effect of strong frequency band along with washing away for high-speed flow Biggish dust stratification is spent to fall off.

The output quantity of sonic soot blowing unit and weak quick-fried soot blowing unit can be adjusted according to the actual state to deashing boiler, with Reach and thoroughly removes dust stratification purpose.

It is clear that the device is suitable for furnace heating surface deashing, air preheater deashing, level and tail vertical well gas flue heating surface Ash etc. is particularly suitable at the unapproachable dust stratification of conventional vapor soot blowing.

Detailed description of the invention

Fig. 1 is the deashing device structural schematic diagram of the coal-burning boiler of burning mixed mud disclosed in embodiment.

Specific embodiment

The utility model is described further with reference to the accompanying drawings and examples.

As shown in Figure 1, disclosing a kind of deashing device of the coal-burning boiler of novel burning mixed mud in embodiment, mainly include Weak quick-fried deashing unit, sound wave ashing unit, and the pneumatics of gas source is provided simultaneously for weak quick-fried deashing unit and sound wave ashing unit It stands, wherein air supply unit is mainly made of sequentially connected air compression station, filter device and control cabinet, and weak quick-fried deashing unit is main It is made of sequentially connected air distributing device, explosion cavity and spherical surface wave producer, sound wave ashing unit is mainly by pressure pump, sound wave Generator composition.The deashing device is used in coal-burning boiler dead status, when in use, the injection that spherical surface wave producer is carried The jet port that mouth and sonic generator carry is respectively protruding into the preset ash blowing mouth of coal-burning boiler.

In air supply unit: air compression station built in air compressor provides compressed air for entire soot blower；Air compression station passes through Pipeline connects filter device, and is equipped with shut-off valve in the duct；Filter device is used to remove the impurity in compressed air；Control cabinet In in set flow-control module, solenoid valve, shut-off valve etc., compressed air is divided into weak quick-fried deashing unit and sound wave ashing list The two-way of member, and according to collecting ash degree, each deashing unit intensity of manual setting adjusts two-way pressure by flow-control module The flow and pressure of contracting air.It should be noted that the deashing ability of weak quick-fried deashing unit is stronger, but deashing area is smaller, fits For small and obstinate dust stratification region, and sound wave ashing unit deashing area coverage is larger, but impact capacity is smaller, is suitable for big Area but not obstinate dust stratification region, therefore, the air-flow ratio into weak quick-fried deashing unit and sound wave ashing unit can basis The concrete condition in dust stratification region is adjusted.

In weak quick-fried deashing unit: setting flow adjustment module and mixed gas chamber in air distributing device, and have single with gas supply respectively Two air inlets of member and fuel gas piping connection.Wherein, on the one hand flow adjustment module is used to control for entering mixed gas The compressed air of chamber and the aeration ratio of fuel gas, on the other hand for controlling the stream of the mixed gas into explosion cavity Amount；Set up an office firearm in explosion chamber body, generates for mixed gas weak quick-fried；Spherical surface wave producer is for generating spherical wave, to dust stratification Critical regions carry out emphasis deashing.

In sound wave ashing unit: the gas source that pressure pump is used to provide air supply unit pressurizes, and meets sound wave to generate The certain pressure compressed air that generator requires；Waveguide pipe built in sonic generator, in embodiment, the gas source of sonic generator is The compressed air that pressure pump pressurizes after air compression station.

As shown in connection with fig. 1, in actual work:

Air compressor in air compression station provides compressed air for entire soot blower, the compressed air warp that air compression station provides Shut-off valve enters filter device, removes the impurity in compressed air through filter device, obtains pure compressed air, subsequently into Control cabinet carries out the distribution of next step, and compressed air is divided into weak quick-fried deashing unit by control cabinet by the interior flow system set With sound wave ashing unit two-way, need to adjust the flow and pressure of two-way compressed air, reasonable distribution sound wave according to specific deashing Deashing energy needed for soot blowing unit and weak quick-fried soot blowing unit.

Compressed air enters sound wave ashing unit through shut-off valve all the way, meets sonic generator requirement by pressure pump generation Certain pressure compressed air, subsequently into sonic generator, waveguide pipe built in sonic generator, by the sound wave of generation guide to The position of soot blowing is needed to carry out deashing.

Compressed air enters weak quick-fried deashing unit through shut-off valve all the way, specifically enters air distributing device, while fuel gas passes through Shut-off valve is also mixed with air into air distributing device, enters distribution by the flow-control module automatic adjustment built in air distributing device The flow of device, pressure, and enter the throughput etc. of the mixed gas of explosion cavity, mixed gas enters explosion cavity, passes through The igniter set in explosion chamber body occurs weak quick-fried after lighting, form certain pressure pulse, and generate high-speed jet and shock wave, Guiding shock wave to be directed toward by spherical surface wave producer again needs the position of soot blowing to carry out deashing.

The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art is practical according to this in the technical scope that the utility model discloses Novel technical solution and its inventive concept is subject to equivalent substitution or change, should all cover the protection scope of the utility model it It is interior.

Claims (6)

1. a kind of soot cleaning of coal-fired boiler device of burning mixed mud, which is characterized in that be configured with weak quick-fried deashing unit and sound wave ashing Unit；Weak quick-fried deashing unit includes sequentially connected air distributing device, explosion cavity and spherical surface wave producer；It is set in air distributing device mixed It gas chamber and is controlled for controlling compressed air and imflammable gas inlet in mixed gas chamber and entering the first flow of ratio Module, and have for introducing the first air inlet of compressed air and being used for and introduce the second air inlet of imflammable gas；It is quick-fried Set up an office firearm in fried cavity；Spherical surface wave producer has the impact wave output terminal for connecting soot cleaning of coal-fired boiler mouth；Sound wave is clear Grey unit includes sequentially connected pressure pump and sonic generator；Waveguide pipe built in sonic generator, and have for connecting combustion The sound wave output end of coal burning boiler cleaning door.

2. soot cleaning of coal-fired boiler device as described in claim 1, which is characterized in that further include for providing the confession of compressed air Gas unit, the air supply unit have the first gas source being connected to the first air inlet of the air distributing device in weak quick-fried deashing unit defeated Outlet.

3. soot cleaning of coal-fired boiler device as claimed in claim 2, which is characterized in that the air supply unit is configured with gas compression Device.

4. soot cleaning of coal-fired boiler device as claimed in claim 2, which is characterized in that air supply unit is also configured with for removing pressure The filter device of impurity in contracting air.

5. soot cleaning of coal-fired boiler device as claimed in claim 2, which is characterized in that air supply unit is also configured with for controlling gas The second flow control module of source output quantity.

6. the soot cleaning of coal-fired boiler device as described in claim 2,3 or 4, which is characterized in that air supply unit also has and sound wave Second source output end of the pressure pump connection in deashing unit, and it is defeated for distributing the first source output end and the second gas source The gas source export ratio of outlet and the third flow-control module of output quantity.