CN207750992U - A kind of burning processing system - Google Patents

A kind of burning processing system Download PDF

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Publication number
CN207750992U
CN207750992U CN201820067716.7U CN201820067716U CN207750992U CN 207750992 U CN207750992 U CN 207750992U CN 201820067716 U CN201820067716 U CN 201820067716U CN 207750992 U CN207750992 U CN 207750992U
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China
Prior art keywords
burning
incinerator
pulverized
flue gas
fired boiler
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CN201820067716.7U
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Inventor
杜永斌
杨天亮
付玉玲
郑庆元
潘晶
孙业山
张勇
孙伟晋
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Yantai Longyuan Power Technology Co Ltd
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Yantai Longyuan Power Technology Co Ltd
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Abstract

The utility model is related to incineration treatment technology fields, disclose a kind of burning processing system, include for burning the incinerator for waiting for incinerated matter, and the flue gas for being generated to incinerator carries out the pulverized-coal fired boiler of second-time burning;Pulverized-coal fired boiler is equipped with smoke inlet, and incinerator is equipped with smoke outlet, and smoke inlet is connected to smoke outlet by smoke discharging pipe;Wait for that incinerated matter includes sludge and/or rubbish and/or biomass.The utility model carries out second-time burning by the flue gas that pulverized-coal fired boiler generates incinerator burning, extends the burning time of flue gas;When burning sludge and rubbish, ignition temperature when flue gas secondary combustion is improved, makes such as bioxin of the pernicious gas in flue gas etc. that can be completely broken down, pollution level of the flue gas that reduction generates when burning to air.In biomass burning, when can reduce directly using coal powder boiler combustion biomass power generation, influence that flue gas that coal powder boiler combustion generates generates the heating surface of the burning of pulverized-coal fired boiler and pulverized-coal fired boiler.

Description

A kind of burning processing system
Technical field
The utility model is related to incineration treatment technology field more particularly to a kind of burning processing systems.
Background technology
The yield of municipal sludge and rubbish is huge and complicated component, how to carry out processing to municipal sludge and rubbish and has become For most important problem.The processing of sludge and rubbish should be with " minimizing, stabilisation, innoxious " for final purpose, herein The technology of better economy should be selected under principle.The processing method of municipal sludge and rubbish mainly has landfill and is used for farming Fertilizer.It is had the following problems when carrying out sludge and garbage disposal using above two mode:
1, with the implementation of the raising of environmental protection standard and recycling policy, landfill method is not the approach of sustainable development, And landfill occupies a large amount of soils, and processing cost is higher, therefore landfill method is not gradually by as processing municipal sludge and rubbish The method of rubbish.
2, sludge is a kind of preferable outlet as farmland fertilizer, but the heavy metal in sludge and rubbish and organic pollution general The application can be made to be subject to certain restrictions.
In order to solve the above-mentioned technical problem, typically now use sludge and garbage burning processing method, this method that there is dirt Mud burn volume reduction amount is big, take up little area, handle it is quick and the features such as pathogen can be killed.But sludge and incineration treatment of garbage Method still has following defect, mainly not high enough and flue gas falls short of in the high temperature section residence time in incinerator furnace temperature When, it can cause the pernicious gas especially bioxin in the flue gas generated when burning etc. that cannot be completely broken down, and direct emission Into air, environment is seriously polluted.
Utility model content
The purpose of this utility model is to provide a kind of burning processing system, solves and dirt is burned using incineration treatment method When mud and rubbish, cause to burn the flue gas generated because incinerator furnace temperature is not high enough and flue gas falls short of in the high temperature section residence time In cannot be completely broken down the problem of such as pernicious gas especially bioxin.
For this purpose, the utility model uses following technical scheme:
A kind of burning processing system includes for burning the incinerator for waiting for incinerated matter, and the cigarette for being generated to incinerator Gas carries out the pulverized-coal fired boiler of second-time burning;The pulverized-coal fired boiler is equipped with smoke inlet, and the incinerator is equipped with smoke outlet, described into cigarette Mouth is connected to the smoke outlet by smoke discharging pipe;It is described to wait for that incinerated matter includes sludge and/or rubbish or biomass.
The utility model carries out two by the way that pulverized-coal fired boiler is arranged, and by the flue gas that pulverized-coal fired boiler generates incinerator burning Secondary burning extends the burning time of flue gas so that flue gas is burned more abundant;And since pulverized-coal fired boiler can generate Higher ignition temperature can enable the pernicious gas in flue gas to use up by improving ignition temperature when flue gas secondary combustion It may be decomposed by high-temp combustion, avoid the pernicious gas pollution air in burning sludge and the flue gas of rubbish generation.
As optimal technical scheme, the smoke inlet is set to the lower furnace portion of pulverized-coal fired boiler.Incinerator burning is generated Lower furnace portion of the flue gas through pulverized-coal fired boiler is passed through in the burner hearth of pulverized-coal fired boiler, is extended into the flue gas in pulverized-coal fired boiler in burner hearth The interior residence time so that the pernicious gas in flue gas can be decomposed by high-temp combustion as far as possible.
It is described when incinerated matter includes sludge and/or rubbish as optimal technical scheme, it is equipped in the incinerator combustion-supporting Agent.Since sludge and rubbish may contain more moisture, by added in incinerator combustion adjuvant can ensure sludge or Person's rubbish is sufficiently burned, and avoids the occurrence of insufficient phenomenon of burning.
As optimal technical scheme, the combustion adjuvant is coal or natural gas or fuel oil.Made by adding coal in incinerator It improves the burning degree of sludge and rubbish in incinerator for combustion adjuvant, ensures that sludge in incinerator and rubbish can be by Fully burning.And improve the temperature in incinerator so that the pernicious gases such as bioxin can be completely broken down at high temperature.
As optimal technical scheme, the incinerator is fluidized bed incinerator, rotary kiln incinerator or chain incinerator.
As optimal technical scheme, the pulverized-coal fired boiler is connected with smoke eliminator.By the way that smoke eliminator is arranged, The flue gas generated after the flue gas and incinerator second-time burning that coal dust firing generates in pulverized-coal fired boiler can be purified, is avoided without net The flue gas of change, which is discharged into air, causes air pollution.The flue gas that incinerator generates is net without first individually carrying out when incinerator is discharged Change is handled, and reduces production cost, the flue gas of incinerator discharge by the further burning of pulverized-coal fired boiler after handling, by flue gas Purifier carries out purified treatment.
As optimal technical scheme, the smoke outlet of the incinerator is equipped with the flow inspection of the exhaust smoke level for detecting incinerator Survey device, and the temperature-detecting device of the temperature of smoke outlet for detecting incinerator.By the exhaust smoke level for monitoring incinerator And the temperature of the smoke outlet of incinerator, and the amount for waiting for incinerated matter is adjusted, the flue gas of incinerator discharge can be reduced to coal dust pot The influence that the burning of stove and the heating surface of pulverized-coal fired boiler generate.The heat that incinerated matter generates and metering can be waited for metering combustion Wait for the total amount of heat of incinerated matter supply pulverized-coal fired boiler.
Described when incinerated matter includes sludge as optimal technical scheme, the sludge is dewatered sludge or wet mud.
As optimal technical scheme, the exhaust smoke level of the smoke outlet of the incinerator is total no more than the burner hearth air inlet of pulverized-coal fired boiler The 5% of amount.In burning sludge and rubbish, burning and coal dust of the flue gas of incinerator discharge to pulverized-coal fired boiler can be reduced The influence that the heating surface of boiler generates;When burning biomass, it can reduce and directly use coal powder boiler combustion biomass power generation When, influence that flue gas that coal powder boiler combustion generates generates the heating surface of the burning of pulverized-coal fired boiler and pulverized-coal fired boiler.
As optimal technical scheme, the flame of centre temperature of the pulverized-coal fired boiler is higher than 1500 DEG C.By to pulverized-coal fired boiler The restriction of interior temperature ensures ignition temperature when flue gas secondary combustion, enable pernicious gas such as bioxin in flue gas by Fully decompose.
As optimal technical scheme, it is more than into residence time of the flue gas in the pulverized-coal fired boiler in pulverized-coal fired boiler 2s.By the restriction to the gas residence time in pulverized-coal fired boiler, it further ensure that flue gas in pulverized-coal fired boiler can be by Fully burning avoids the occurrence of insufficient phenomenon of burning, gives the pernicious gases such as bioxin the sufficient resolving time.
The beneficial effects of the utility model:Burning processing system described in the utility model by be arranged pulverized-coal fired boiler, and The flue gas generated to incinerator burning by pulverized-coal fired boiler carries out second-time burning, extends the burning time of flue gas so that flue gas Burned is more abundant;It, can since pulverized-coal fired boiler can generate higher ignition temperature when burning sludge and rubbish By improving ignition temperature when flue gas secondary combustion, make such as bioxin of the pernicious gas in flue gas etc. that can pass through high-temp combustion It is completely broken down, reduces pollution level of the flue gas to air of burn sludge and rubbish generation.
In biomass burning, when can reduce directly using coal powder boiler combustion biomass power generation, coal powder boiler combustion The influence that the flue gas of generation generates the burning of pulverized-coal fired boiler and the heating surface of pulverized-coal fired boiler.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also It can be obtain other attached drawings according to these attached drawings.
Fig. 1 is the structure schematic diagram of burning processing system described in the utility model embodiment one.
In figure:
1, incinerator;11, smoke outlet;
2, pulverized-coal fired boiler;21, smoke inlet;
3, smoke discharging pipe.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.
Include for burning the incinerator for waiting for incinerated matter as shown in Figure 1, present embodiments providing a kind of burning processing system 1, and flue gas for being generated to incinerator 1 carries out the pulverized-coal fired boiler 2 of second-time burning;The pulverized-coal fired boiler 2 is equipped with smoke inlet 21, The incinerator 1 is equipped with smoke outlet 11, and the smoke inlet 21 is connected to the smoke outlet 11 by smoke discharging pipe 3.The present embodiment In, described to wait for that incinerated matter includes sludge and/or rubbish and described when incinerated matter includes sludge, the sludge can be desiccation Sludge or wet mud, when burning and drying sludge, can reduce the usage amount of combustion adjuvant.
The present embodiment is carried out by the way that pulverized-coal fired boiler 2 is arranged, and by the flue gas that pulverized-coal fired boiler 2 generates the burning of incinerator 1 Second-time burning extends the burning time of flue gas so that flue gas is burned more abundant;And since pulverized-coal fired boiler 2 can Higher ignition temperature is generated, pernicious gas in flue gas can be made such as by improving ignition temperature when flue gas secondary combustion Bioxin etc. can be completely broken down by high-temp combustion, avoid the pernicious gas in burning sludge and the flue gas of rubbish generation dirty Contaminate air.
Preferably, the smoke inlet 21 is set to the lower furnace portion of pulverized-coal fired boiler 2.The flue gas that incinerator burning is generated is through coal The lower furnace portion of powder boiler is passed through in the burner hearth of pulverized-coal fired boiler, is extended when being stopped in burner hearth into the flue gas in pulverized-coal fired boiler Between so that the pernicious gases such as flue gas Zhong bioxin can be completely broken down by high-temp combustion.
Further, combustion adjuvant is equipped in the incinerator 1.Since sludge and rubbish may contain more moisture, In order to ensure that sludge and rubbish can be ignited and fully burning, the present embodiment add in the incinerator 1 as far as possible Combustion adjuvant.Preferably, the combustion adjuvant is coal, and further, the combustion adjuvant selects coal dust, passes through the addition in incinerator 1 Combustion adjuvant improves the burning degree of sludge and rubbish in incinerator 1, ensures that sludge in incinerator 1 and rubbish can be by Fully burning.And improve the temperature in incinerator 1 so that the pernicious gases such as bioxin can be complete under high-temp combustion It decomposes.The combustion adjuvant can also select other substances with combustion-supporting property such as natural gas or fuel oil.
In the present embodiment, the incinerator 1 is fluidized bed incinerator, rotary kiln incinerator or chain incinerator.It can be with Using the incinerator of other can burn sludge and rubbish.
The pulverized-coal fired boiler 2 is connected with smoke eliminator.The flue gas that incinerator 1 generates is not necessarily to when incinerator 1 is discharged Purified treatment is first individually carried out, reduces production cost, the flue gas that incinerator 1 is discharged is in the further combustion by pulverized-coal fired boiler 2 After burning processing, purified treatment is carried out by smoke eliminator.Smoke eliminator can purification secondary burning after flue gas and The flue gas that coal powder boiler combustion generates, avoids not purified flue gas from being directly discharged into air and causes air pollution.
Smoke eliminator includes denitrification apparatus, dust-extraction unit, desulfurizer etc., smoke eliminator in the present embodiment For the existing prior art, no longer it is described in detail herein.
The smoke outlet 11 of the incinerator 1 is equipped with the flow detector of the exhaust smoke level for detecting incinerator 1, Yi Jiyong In the temperature-detecting device of the temperature of the smoke outlet 11 of detection incinerator 1.By the exhaust smoke level and incinerator that monitor incinerator 1 The temperature of 1 smoke outlet 11, and the amount of the amount and combustion adjuvant of conditioning of mud and rubbish can reduce the cigarette of the discharge of incinerator 1 The influence that gas generates the burning of pulverized-coal fired boiler 2 and the heating surface of pulverized-coal fired boiler 2.
Burning disposal is carried out to sludge/rubbish using above-mentioned burning processing system, following steps are specifically included, by sludge And/or rubbish is put into incinerator and burns, and second-time burning is carried out to the flue gas that incinerator generates by pulverized-coal fired boiler 2.
Since pulverized-coal fired boiler 2 can reach higher ignition temperature, incinerator 1 can be generated by pulverized-coal fired boiler 2 Flue gas carries out high temperature second-time burning, carries out sludge and incineration firing processing compared to only with incinerator 1, extends the combustion of flue gas Burn the time so that flue gas is burned more abundant;Pernicious gas such as bioxin in flue gas etc. can pass through high-temp combustion quilt It decomposes, avoids the pernicious gas pollution air in burning sludge and the flue gas of rubbish generation.
The flue gas generated after second-time burning carries out purified treatment by the smoke eliminator for being connected to pulverized-coal fired boiler 2, By the way that smoke eliminator is arranged, the flue gas that can be generated after purifying incinerator second-time burning avoids not purified flue gas from arranging Enter and causes air pollution in air.Due to needing to carry out purified treatment to the flue gas after second-time burning, and pulverized-coal fired boiler 2 connects Have along its purifier, therefore incinerator 1 burns the flue gas generated later and individually purified without first, it only need to be to second-time burning The flue gas that the burning of flue gas pulverized-coal fired boiler 2 afterwards generates carries out purified treatment, reduces production cost, is ensureing to be discharged into air In flue gas will not cause air pollution and endanger human health under the premise of, simplify sludge and rubbish as far as possible Processing step, processing method are simple and efficient.
Preferably, the exhaust smoke level of the smoke outlet 11 of the incinerator 1 enters the wind total amount no more than the burner hearth of pulverized-coal fired boiler 2 5%.It, can be by controlling the sludge of incinerator 1 and the amount of rubbish and help in the case where the air inlet total amount of pulverized-coal fired boiler 2 is constant Fire agent amount, come ensure incinerator 1 burn after outlet exhaust smoke level account for 2 burner hearth import total blast volume of pulverized-coal fired boiler 5% and below. It can ensure that the flue gas that incinerator 1 exports generates minor impact to pulverized-coal fired boiler 2 in this way, including to boiler combustion and boiler Heating surface etc. generates minor impact.
The flame of centre temperature of the pulverized-coal fired boiler 2 is higher than 1500 DEG C, ensures ignition temperature when flue gas secondary combustion;Into Residence time of the flue gas in pulverized-coal fired boiler 2 entered in the pulverized-coal fired boiler 2 is more than 2s.By to the temperature in pulverized-coal fired boiler 2 And the restriction of gas residence time, it further ensure that the flue gas in pulverized-coal fired boiler 2 can be sufficiently burned, make in flue gas Pernicious gas such as bioxin can be adequately broken, avoid the occurrence of the insufficient phenomenon of burning.
It is found by experimental verification, the flame of centre temperature of the pulverized-coal fired boiler 2 is higher than 1500 DEG C, and enters the coal Under conditions of residence time of the flue gas in pulverized-coal fired boiler 2 in powder boiler 2 is more than 2s, in the flue gas that the burning of incinerator 1 generates Polluted gas be converted into uncontaminated gases, especially bioxin and can be completely broken down, improve the burning processing system Environmental-protecting performance.
Embodiment two
The difference between this embodiment and the first embodiment lies in waiting for incinerated matter difference, wait for that incinerated matter is made a living described in the present embodiment Substance, since biomass itself has the characteristics that conflagration, there is no need to combustion adjuvant is added in incinerator.
The present embodiment by monitor incinerator exhaust smoke level and smoke outlet temperature, it is possible thereby to metering combustion biomass produce Raw heat and the total amount of heat for measuring biomass supply pulverized-coal fired boiler.
The other structures of burning processing system in the present embodiment are identical as a kind of corresponding structure of embodiment, herein no longer It is superfluous to chat.
Burning disposal is carried out to biomass using above-mentioned burning processing system, following steps are specifically included, by biomass It is put into incinerator and burns, and second-time burning is carried out to the flue gas that incinerator generates by pulverized-coal fired boiler.Combustion can be improved Temperature is burnt, when making the more abundant of biomass combustion, and can reduce directly using coal powder boiler combustion biomass power generation, coal The influence that the flue gas that powder boiler combustion generates generates the burning of pulverized-coal fired boiler and the heating surface of pulverized-coal fired boiler.
Other steps are identical to sludge and the rubbish progress corresponding steps of burning disposal as described in embodiment one, herein It is no longer superfluous to chat.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use this practicality new Type.Various modifications to these embodiments will be apparent to those skilled in the art, and determine herein The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The widest range consistent with features of novelty.

Claims (11)

1. a kind of burning processing system, which is characterized in that include for burning the incinerator (1) for waiting for incinerated matter, and for burning Burn the pulverized-coal fired boiler (2) that the flue gas that stove (1) generates carries out second-time burning;The pulverized-coal fired boiler (2) is equipped with smoke inlet (21), described Incinerator (1) is equipped with smoke outlet (11), and the smoke inlet (21) is connected to the smoke outlet (11) by smoke discharging pipe (3);Institute It states and waits for that incinerated matter includes sludge and/or rubbish or biomass.
2. burning processing system according to claim 1, which is characterized in that the smoke inlet (21) is set to pulverized-coal fired boiler (2) lower furnace portion.
3. burning processing system according to claim 1, which is characterized in that described to wait for that incinerated matter includes sludge and/or rubbish When rubbish, combustion adjuvant is equipped in the incinerator (1).
4. burning processing system according to claim 3, which is characterized in that the combustion adjuvant is coal or natural gas or combustion Oil.
5. burning processing system according to claim 1, which is characterized in that the incinerator (1) be fluidized bed incinerator, Rotary kiln incinerator or chain incinerator.
6. burning processing system according to claim 1, which is characterized in that it is net that the pulverized-coal fired boiler (2) is connected with flue gas Makeup is set.
7. burning processing system according to claim 1, which is characterized in that the smoke outlet (11) of the incinerator (1) is set It is useful for the flow detector of the exhaust smoke level of detection incinerator (1), and the smoke outlet (11) for detecting incinerator (1) The temperature-detecting device of temperature.
8. burning processing system according to claim 1, which is characterized in that it is described when incinerated matter includes sludge, it is described Sludge is dewatered sludge or wet mud.
9. burning processing system according to claim 1, which is characterized in that the smoke outlet (11) of the incinerator (1) Exhaust smoke level enters the wind the 5% of total amount no more than the burner hearth of pulverized-coal fired boiler (2).
10. burning processing system according to claim 1, which is characterized in that the flame of centre temperature of the pulverized-coal fired boiler (2) Degree is higher than 1500 DEG C.
11. burning processing system according to claim 1, which is characterized in that enter the flue gas in the pulverized-coal fired boiler (2) Residence time in pulverized-coal fired boiler (2) is more than 2s.
CN201820067716.7U 2018-01-15 2018-01-15 A kind of burning processing system Active CN207750992U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108036324A (en) * 2018-01-15 2018-05-15 烟台龙源电力技术股份有限公司 A kind of burning processing system and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108036324A (en) * 2018-01-15 2018-05-15 烟台龙源电力技术股份有限公司 A kind of burning processing system and method

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