CN202303420U

CN202303420U - System for multi-return residual heat utilization and dust removal of steam generating device

Info

Publication number: CN202303420U
Application number: CN2011203894991U
Authority: CN
Inventors: 李中伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-13
Filing date: 2011-10-13
Publication date: 2012-07-04
Anticipated expiration: 2021-10-13

Abstract

The utility model discloses a system for the multi-return residual heat utilization and the dust removal of a steam generating device, which comprises a first-stage dust removal mechanism, wherein the first-stage dust removal mechanism comprises a dust removal pipeline, the pipe wall of the dust removal pipeline is in a double-layer hollow structure, a hollow cavity at the pipe wall is provided with a water injection port and a water outlet, the water outlet is communicated with a water storage cavity of a steam generating host machine, and one end of the dust removal pipeline is communicated with a fume discharge port of the steam generating host machine. According to the system for the multi-return residual heat utilization and the dust removal of the steam generating device, the heat of high-temperature fume and dust is recovered by water liquid in the pipe wall during dust removal, and then the water liquid flows into the steam generating host machine of the steam generating device and is used for generating steam. Because these water has higher temperature under the heating of the residual heat of the high-temperature fume, the steam can be generated only by few heat after the water enters the steam generating host machine, so that energy resources are greatly saved, and the utilization rate of the energy resources is enhanced.

Description

The many backhauls UTILIZATION OF VESIDUAL HEAT IN and the dust pelletizing system of steam raising plant

Technical field

The utility model relates to the steam generation technical field, is a kind of many backhauls UTILIZATION OF VESIDUAL HEAT IN and dust pelletizing system of steam raising plant specifically.

Background technology

Boiler is the important device in daily life and the commercial production, for example at some hotels, hospital, dwelling house, and in the commercial production such as food, clothing, brickmaking, chemical industry, pharmacy, heating, power plant, often need use boiler.The conventional boiler of prior art to energy-saving and emission-reduction, service life, aspect safe in utilization consider less, exist use cost high, pollute big, dangerous high, shortcoming such as the life-span is short, design is unreasonable, below be elaborated.

There is following shortcoming in the boiler of prior art:

1, boiler of the prior art is to fuel Btu utilization science not, and general heat utilization ratio is less than 20%-30%.

2, boiler of the prior art, the heat of discharging is big, and stack temperature is high;

3, boiler of the prior art, owing to discharging is not handled especially, thereby the discharging jet-black, particle spreads in the air, causes environmental pollution;

4, boiler of the prior art, heat-generating pipe are in long-term use, and inner meeting produces dirt, and mostly the heat-generating pipe nexine is incrustation scale, and producer uses chemical detergent to remove the nexine dirt mostly, but heat-generating pipe outside crock is felt simply helpless, and use and waste fuel more for a long time more.

5, boiler of the prior art is short service life, and existing boiler generally adopts steel plate or boiler specialized version.As everyone knows, steel plate is prone to get rusty, and pluralities of fuel can produce sulphur, a kind of chemical substance that sulphur is the fastest to metal erosion in burning.

6, boiler of the prior art is long more more dangerous service time, can produce safety issue.Conventional boiler is the life-span weak point not only, and use cost is high, and danger is also higher.The corrosion delamination can make the furnace wall attenuation, increases dangerous.The corrosion thing can stop up safety valve system or venthole etc., and aggravation is dangerous.Mostly the corrosion thing is deposited in boiler tube, and water can't be got into, and produces caususly, burns boiler tube and leaks and cause scrapping;

7, boiler grate of the prior art damages easily; The structure of the fire grate that in the combustion chamber, is provided with is a solid construction; Fire grate the situation of fire grate distortion, fuel refining slag often occurs because the heat that gathers is high, has a strong impact on the abundant burning of fuel; Cause the consumption of fuel to burn out fire grate greatly and easily, the service life of fire grate is short.

The utility model content

In view of this, the purpose of the utility model provides a kind of many backhauls UTILIZATION OF VESIDUAL HEAT IN and dust pelletizing system of steam raising plant, in dedusting, improves the utilization rate of fuel heat.

For solving the problems of the technologies described above, the technical scheme of the utility model is:

A kind of many backhauls UTILIZATION OF VESIDUAL HEAT IN and dust pelletizing system of steam raising plant; Comprise first order dedusting mechanism; Said first order dedusting mechanism comprises the dedusting pipeline, and the tube wall of said dedusting pipeline is double-deck hollow structure, and the cavity of tube wall is provided with water filling port and delivery port; The water storage cavity conducting of said delivery port and steam generation main frame, the exhaust opening conducting of said dedusting pipeline one end and steam generation main frame.

Preferably; Said first order dedusting mechanism also comprises dust cleaning case, and dedusting pipeline and dust cleaning case conducting are provided with the filter that is obliquely installed in the said dust cleaning case; Said filter is arranged near the exhaust outlet of said dust cleaning case, treats the gas that flows out exhaust outlet and filters.

Preferably, said delivery port is provided with check-valves through a pipeline and the conducting of steam generation main frame in the said pipeline.

Preferably, the below of said dust cleaning case is provided with out the sewage mouth.

Preferably, also comprise a second level dedusting mechanism, said second level dedusting mechanism is provided with a plurality of high pressure fog mouths, and said high pressure fog mouth is along the flow direction inject high pressure fog of flue gas.

Preferably, said second level dedusting mechanism comprises a cyclic water tank and is arranged on the pipeline that gathers dust on the cyclic water tank that said high pressure fog mouth is opened in the pipeline that gathers dust.

Preferably, the below of said cyclic water tank is provided with sewage outlet.

Preferably, the top in the said cyclic water tank also is provided with a dividing plate, with the spaced of cyclic water tank inner and upper.

Preferably, the terminal floss hole of the said pipeline that gathers dust and an air-introduced machine conducting.

Compared with prior art, the utlity model has following advantage:

Because first order dedusting mechanism is set, this first order dedusting mechanism comprises the dedusting pipeline, and the tube wall of said dedusting pipeline is double-deck hollow structure; The cavity of tube wall is provided with water filling port and delivery port, the water storage cavity conducting of said delivery port and steam generation main frame, the exhaust opening conducting of said dedusting pipeline one end and steam generation main frame; Thereby, in dedusting, the heat of high-temperature smoke is reclaimed through water liquid in the tube wall; Water liquid flow in the steam generation main frame of steam raising plant again, is used for producing steam, because these water temperature under the heating of high-temperature flue gas waste heat is higher; Thereby; Only need a heat seldom can produce steam after getting into the steam generation main frame, so energy savings has greatly improved rate of energy.

Further; Because second level dedusting mechanism is set; Flue gas to handling through first order dedusting mechanism carries out processing once more, make some tiny soot dust granules be removed, thereby the waste gas that steam raising plant is produced when steam generation can be realized non-pollution discharge.

Description of drawings

Fig. 1 is many backhauls UTILIZATION OF VESIDUAL HEAT IN and the structure schematic diagram of dust pelletizing system one preferred embodiment of the steam raising plant of the utility model.

The specific embodiment

In order to make those skilled in the art understand the technical scheme of the utility model better, the utility model is done further to specify below in conjunction with accompanying drawing and specific embodiment.

Referring to Fig. 1, many backhauls UTILIZATION OF VESIDUAL HEAT IN of the steam raising plant of the utility model and dust pelletizing system 1 comprise first order dedusting mechanism 2 and second level dedusting mechanism 3.

Wherein, First order dedusting mechanism 2 comprises a dust cleaning case 21 and is arranged on the dedusting pipeline on the dust cleaning case; This dedusting pipeline comprises first pipeline 22 and an end of second pipeline, 23, the first pipelines and the top conducting of housing, the other end and dust cleaning case conducting; Second pipeline, one end and dust cleaning case conducting, the other end and the second dedusting mechanism conducting.Be provided with a filter 21a in the dust cleaning case, this filter 21a is obliquely installed the upper right corner at dust cleaning case, and is positioned at before second pipeline, makes gas earlier through the filtration of filter 21a, flow into second pipeline again.The tube wall that the dedusting pipeline is is double-deck hollow structure; Cavity one end in the tube wall is communicated with external water source through water filling port 24; The other end is provided with delivery port; This delivery port is communicated with the steam generation main frame of steam raising plant through a pipeline 25, in order to produce the water liquid of steam, also is provided with a check-valves 25a to the input of steam generation main frame in the pipeline 25.When flue gas was flowed through the dedusting pipeline, the water in the dedusting pipeline tube wall absorbed heat, carries out waste heat recovery, and temperature raises, and these high-temperature water liquid get in the steam generation main frame again, are heated into the used heat of steam and just tail off, thereby reach energy-saving effect.The below of dust cleaning case 21 also is provided with out sewage mouth 21b.

Wherein, Second dedusting mechanism 3 comprises cyclic water tank 31 and is arranged on the pipeline that gathers dust on the cyclic water tank; This pipeline that gathers dust comprises first order pipeline 32, second level pipeline 33, third level pipeline 34, is provided with high pressure fog mouth 32a in first order pipeline upper end, and the lower end of pipeline is provided with high pressure fog mouth 33a in the second level; The upper end of pipeline is provided with high pressure fog mouth 33b in the second level, second pipeline, 22 conductings of the first order pipeline 32 and first dedusting mechanism 2.In storage tank 31, also be provided with a ball-cock assembly 31a, be used for monitoring liquid level.Wherein, the downward spray water of high pressure fog mouth 32a receives downward impulse force after making flue gas get into first order pipeline; Be punched into cyclic water tank with fog, improve and to wash the cigarette effect, the high pressure fog mouth 33a spray water that makes progress; Receive impulse force upwards after making the residue flue gas get into cyclic water tank, thereby get into second level pipeline, the downward spray water of high pressure fog mouth 33b that the upper end of pipeline is provided with in the second level; Make the flue gas that gets into second level pipeline one end after flowing to the other end; Can flow downward apace, thereby make flue gas pour cyclic water tank with fog once more, last cyclic water tank top is handled clean gas and is discharged via third level pipeline 34.In cyclic water tank, also be provided with a dividing plate 31b, the cavity above the water liquid in the cyclic water tank is separated, prevent that the flue gas of not handling fully is discharged outside to.The end of third level pipeline 34 is communicated with an air-introduced machine 35, guides the gas in the third level pipeline into outside.

Below cyclic water tank, also be provided with sewage outlet 31c, can the dirt of accumulation be discharged through this sewage outlet.

The utility model is owing to be provided with first order dedusting mechanism, second level dedusting mechanism; First order dedusting mechanism is in dedusting; Reclaim the heat of flue dust, second level dedusting mechanism is further eliminated tiny soot dust granule through the mode of washing, thereby has following significant advantage:

Efficiently---utilize the fuel heat to reach more than 95%;

Energy-conservation---same with 3-5 times of amount fuel gas production increase;

Environmental protection---reduce air pollution in a large number;

Low-carbon (LC)---a large amount of chemical substances that produce in the burning that reduce;

Reduce discharging---reduce the pollution of empty G&W in a large number.

More than the utility model has been carried out detailed introduction, use concrete example in the literary composition principle and the embodiment of the utility model set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of the utility model.Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.

Claims

1. the many backhauls UTILIZATION OF VESIDUAL HEAT IN and the dust pelletizing system of a steam raising plant; It is characterized in that, comprise first order dedusting mechanism, said first order dedusting mechanism comprises the dedusting pipeline; The tube wall of said dedusting pipeline is double-deck hollow structure; The cavity of tube wall is provided with water filling port and delivery port, the water storage cavity conducting of said delivery port and steam generation main frame, the exhaust opening conducting of said dedusting pipeline one end and steam generation main frame.

2. many backhauls of steam raising plant as claimed in claim 1 UTILIZATION OF VESIDUAL HEAT IN and dust pelletizing system; It is characterized in that; Said first order dedusting mechanism also comprises dust cleaning case, and dedusting pipeline and dust cleaning case conducting are provided with the filter that is obliquely installed in the said dust cleaning case; Said filter is arranged near the exhaust outlet of said dust cleaning case, treats the gas that flows out exhaust outlet and filters.

3. many backhauls of steam raising plant as claimed in claim 1 UTILIZATION OF VESIDUAL HEAT IN and dust pelletizing system is characterized in that, said delivery port is provided with check-valves through a pipeline and the conducting of steam generation main frame in the said pipeline.

4. many backhauls of steam raising plant as claimed in claim 1 UTILIZATION OF VESIDUAL HEAT IN and dust pelletizing system is characterized in that, the below of said dust cleaning case is provided with out the sewage mouth.

5. many backhauls of steam raising plant as claimed in claim 1 UTILIZATION OF VESIDUAL HEAT IN and dust pelletizing system; It is characterized in that; Also comprise a second level dedusting mechanism, said second level dedusting mechanism is provided with a plurality of high pressure fog mouths, and said high pressure fog mouth is along the flow direction inject high pressure fog of flue gas.

6. many backhauls of steam raising plant as claimed in claim 5 UTILIZATION OF VESIDUAL HEAT IN and dust pelletizing system; It is characterized in that; Said second level dedusting mechanism comprises a cyclic water tank and is arranged on the pipeline that gathers dust on the cyclic water tank that said high pressure fog mouth is opened in the pipeline that gathers dust.

7. many backhauls of steam raising plant as claimed in claim 6 UTILIZATION OF VESIDUAL HEAT IN and dust pelletizing system is characterized in that, the below of said cyclic water tank is provided with sewage outlet.

8. many backhauls of steam raising plant as claimed in claim 6 UTILIZATION OF VESIDUAL HEAT IN and dust pelletizing system is characterized in that, the top in the said cyclic water tank also is provided with a dividing plate, with the spaced of cyclic water tank inner and upper.

9. many backhauls of steam raising plant as claimed in claim 6 UTILIZATION OF VESIDUAL HEAT IN and dust pelletizing system is characterized in that, the terminal floss hole of the said pipeline that gathers dust and an air-introduced machine conducting.