CN103127806B - For the treatment of the equipment of flying ash - Google Patents
For the treatment of the equipment of flying ash Download PDFInfo
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- CN103127806B CN103127806B CN201310049924.6A CN201310049924A CN103127806B CN 103127806 B CN103127806 B CN 103127806B CN 201310049924 A CN201310049924 A CN 201310049924A CN 103127806 B CN103127806 B CN 103127806B
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Abstract
The invention discloses a kind of equipment for the treatment of flying ash.This equipment comprises: dechlorination reaction device, and dechlorination reaction device, under the pressure of predetermined temperature and pressure-fired, in nonoxidizing atmosphere, makes bioxin generation dechlorination reaction in flying dust, to obtain dechlorination process product; And quickly cooling device, quickly cooling device is connected with dechlorination reaction device, and for cooling fast dechlorination process product, to obtain treated flying ash.Utilize this equipment effectively can process flying ash containing bioxin.
Description
Technical field
The present invention relates to a kind of equipment for the treatment of flying ash.
Background technology
Waste incineration as innoxious the most thoroughly, subtract the important technology that appearanceizations is the most remarkable, resourcebility producing level is the highest a kind for the treatment of technology has become current international community domestic rubbish disposal, but in the secondary pollution easily brought at consumer waste incineration, the extensive concern of the public is caused because bioxin is called as " poisonous substance that on the earth, toxicity is the strongest ", make the foundation of some local garbage burning factory suffer coming down hard upon of the common people, become and affect the stable factor of social harmony.
But the means of process flying ash still have much room for improvement at present.
Summary of the invention
Object of the present invention is intended to overcome at least one shortcoming of the prior art.For this reason, the present invention proposes a kind of equipment that effectively can process flying ash.
The present invention proposes a kind of equipment for the treatment of flying ash.According to embodiments of the invention, this equipment comprises: dechlorination reaction device, and described dechlorination reaction device is used under the pressure of predetermined temperature and pressure-fired, in nonoxidizing atmosphere, make bioxin generation dechlorination reaction in described flying dust, to obtain dechlorination process product; And quickly cooling device, described quickly cooling device is connected with described dechlorination reaction device, and for cooling fast, to obtain treated flying ash described dechlorination process product.Thus, this equipment is utilized effectively can to process flying ash containing bioxin.The present inventor finds, by nonoxidizing atmosphere, makes bioxin generation dechlorination reaction in described flying dust, and cools fast afterwards, can avoid being regenerated as noxious material through dechlorination process bioxin.According to embodiments of the invention, owing to adopting bioxin in non-oxide pyrolysis incineration of refuse flyash, therefore, to overcome and to eliminate high-temperature melting method energy consumption high, the shortcoming of apparatus expensive, simultaneously, avoid the regenerative ratio of tail gas and solid residue Zhong bioxin, discharge after making tail gas can directly introduce flue gas purification system, flying dust after process can enter landfill yard, there is not secondary pollution process, has the distinguishing features such as energy-saving and environmental protection, and economic benefit and social benefit are obviously, have application and promotional value.
According to embodiments of the invention, this equipment may further include: temperature control equipment, and described temperature control equipment is connected with described dechlorination reaction device, for controlling in the scope of 200 ~ 500 degrees Celsius by described reservation temperature.According to embodiments of the invention, this equipment can further include: pressure control device, and described pressure control device is connected with described dechlorination reaction device, for being controlled in the scope of 10Pa ~ 5000Pa by described pressure-fired.According to embodiments of the invention, the quickly cooling device of this equipment is configured within the time being no more than 3 minutes, and described dechlorination process product is cooled to the temperature being no more than 90 degrees Celsius.According to embodiments of the invention, described quickly cooling device can be water cooling plant.Cooling velocity is key feature of the present invention, the present inventor is surprised to find, by within the time being no more than 3 minutes, described dechlorination process product is cooled to the temperature being no more than 90 degrees Celsius, can effectively avoids dechlorination process product to be regenerated as noxious material.The efficiency of process flying ash can be improved further.Preferably, described quick cooling is undertaken by water-cooled.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 shows the structural representation of the equipment of process flying ash according to an embodiment of the invention;
Fig. 2 shows the structural representation of the equipment of the process flying ash according to another embodiment of the present invention;
Fig. 3 shows the structural representation of the equipment of the process flying ash according to the present invention's concrete example.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " thickness ", " on ", the orientation of the instruction such as D score or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.Term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
With reference to figure 1, the present invention proposes a kind of equipment for the treatment of flying ash.According to embodiments of the invention, this equipment comprises: dechlorination reaction device 100 and quickly cooling device 200.Wherein, dechlorination reaction device 100, under the pressure of predetermined temperature and pressure-fired, in nonoxidizing atmosphere, makes bioxin generation dechlorination reaction in flying dust, to obtain dechlorination process product.Quickly cooling device 200 is connected with dechlorination reaction device 100, and for cooling fast dechlorination process product, to obtain treated flying ash.Thus, this equipment is utilized effectively can to process flying ash containing bioxin.The present inventor finds, by nonoxidizing atmosphere, makes bioxin generation dechlorination reaction in flying dust, and cools fast afterwards, can avoid being regenerated as noxious material through dechlorination process bioxin.According to embodiments of the invention, owing to adopting bioxin in non-oxide pyrolysis incineration of refuse flyash, therefore, to overcome and to eliminate high-temperature melting method energy consumption high, the shortcoming of apparatus expensive, simultaneously, avoid the regenerative ratio of tail gas and solid residue Zhong bioxin, discharge after making tail gas can directly introduce flue gas purification system, flying dust after process can enter landfill yard, there is not secondary pollution process, has the distinguishing features such as energy-saving and environmental protection, and economic benefit and social benefit are obviously, have application and promotional value.
With reference to figure 2 and 3, according to embodiments of the invention, this equipment may further include: temperature control equipment 300, and temperature control equipment 300 is connected with dechlorination reaction device 100, for controlling in the scope of 200 ~ 500 degrees Celsius by reservation temperature.This equipment can further include: pressure control device 400, and pressure control device 400 is connected with dechlorination reaction device 100, for being controlled in the scope of 10Pa ~ 5000Pa by pressure-fired.The quickly cooling device 200 of this equipment is configured within the time being no more than 3 minutes, and dechlorination process product is cooled to the temperature being no more than 90 degrees Celsius.According to embodiments of the invention, quickly cooling device 200 is water cooling plant.Cooling velocity is key feature of the present invention, the present inventor is surprised to find, by within the time being no more than 3 minutes, dechlorination process product is cooled to the temperature being no more than 90 degrees Celsius, can effectively avoids dechlorination process product to be regenerated as noxious material.The efficiency of process flying ash can be improved further.Preferably, cooling is undertaken by water-cooled fast.
For convenience of understanding, below the method that equipment of the present invention can be utilized to carry out processing flying ash is described in detail.
The present invention proposes a kind of method processing flying ash, flying ash contains bioxin.According to embodiments of the invention, the method comprises: under the pressure of predetermined temperature and pressure-fired, in nonoxidizing atmosphere, make bioxin generation dechlorination reaction in flying dust, to obtain dechlorination process product; And dechlorination process product is cooled fast, to obtain treated flying ash.Inventor finds, by nonoxidizing atmosphere, makes bioxin generation dechlorination reaction in flying dust, and cools fast afterwards, can avoid being regenerated as noxious material through dechlorination process bioxin.According to embodiments of the invention, owing to adopting bioxin in non-oxide pyrolysis incineration of refuse flyash, therefore, to overcome and to eliminate high-temperature melting method energy consumption high, the shortcoming of apparatus expensive, simultaneously, avoid the regenerative ratio of tail gas and solid residue Zhong bioxin, discharge after making tail gas can directly introduce flue gas purification system, flying dust after process can enter landfill yard, there is not secondary pollution process, has the distinguishing features such as energy-saving and environmental protection, and economic benefit and social benefit are obviously, have application and promotional value.
According to embodiments of the invention, manageable flying ash is at least one being selected from flying dust and waste heat boiler flying dust bottom flying dust, extracting tower bottom garbage incinerating power plant sack cleaner.Thus, the industries such as smelting, electric power, chemical industry, soil remediation can be effectively applied to.
According to embodiments of the invention, the predetermined temperature carrying out dechlorination process can be 200 ~ 500 degrees Celsius.Thus, the efficiency of process flying ash can be improved further.
According to embodiments of the invention, dechlorination reaction can carry out 0.5 hour ~ 2 hours.Thus, the efficiency of process flying ash can be improved further.
According to embodiments of the invention, nonoxidizing atmosphere is made up of nitrogen.Thus, the efficiency of process flying ash can be improved further.
According to embodiments of the invention, the pressure of pressure-fired is 10Pa ~ 5000Pa.Thus, the efficiency of process flying ash can be improved further.
According to embodiments of the invention, be cooled to fast within the time being no more than 3 minutes, dechlorination process product is cooled to the temperature being no more than 90 degrees Celsius.Cooling velocity is key feature of the present invention, the present inventor is surprised to find, by within the time being no more than 3 minutes, dechlorination process product is cooled to the temperature being no more than 90 degrees Celsius, can effectively avoids dechlorination process product to be regenerated as noxious material.The efficiency of process flying ash can be improved further.Preferably, cooling is undertaken by water-cooled fast.
According to embodiments of the invention, the content of treated flying ash Zhong bioxin can reach and be no more than 3 μ gTEQ/Kg.According to embodiments of the invention, may further include and treated flying ash is carried out landfill.
Concrete, with reference to figure 3, adopt the equipment of bioxin in a kind of continous way process flying ash in embodiment below, it comprises flying dust warehouse 1, feed system 2, dynamical system 3, furnace sealing system 4, heating system 5, body of heater 6, control system 7, blanketing gas system 8, support system 9, exhaust gas cooler 10, flying dust cooler 11 form.Wherein, flying dust warehouse 1 passes through push-pull valve, rotate unloading valve, be flexible coupling and be connected with feed system 2, feed system 2, rotary power system 3, body of heater 6 is connected by sealing system 4 and seals, heating system 5 is arranged on body of heater 6, control system 7 is arranged in heating system 5, control system 7 is by wiring and rotary power system 3, heating system 5, body of heater 6 connects, gas outlet 6.2 on body of heater 6 is connected with exhaust gas cooler 10 by pipeline, exhaust gas cooler 10 passes through pipeline, valve is connected with flue gas purification system, the ash hole 6.3 of body of heater 6 passes through push-pull valve, be flexible coupling and be connected with flying dust cooler 11, flying dust cooler 11 passes through valve, pipeline is connected with stabilizing fly ash system, body of heater 6 is supported by support system 9, blanketing gas system passes through pipeline, valve and feed system 2, body of heater 6, flying dust cooler 11 connects.
Feed system 2, feed system 2 by being flexible coupling, ash bucket, 5 ° ~ 85 °, inclined tube inclination angle form, and is provided with one group of gas vibrator around.Control system 7, is made up of display, button, detector, transmission line etc., has that temperature point is no less than 1, pressure-measuring-point is no less than 1, oxygen content measuring point is no less than 1 respectively in body of heater 6 inside.Blanketing gas system 8 is made up of one group of gas cylinder, valve, Pressure gauge, flowmeter, metal tube.Exhaust gas cooler 10, be provided with inlet exhaust gas 10.1, offgas outlet 10.2, cooling import 10.3, coolant outlet 10.4, exhaust gas cooler inside is heat exchanger.Flying dust cooler 11, is provided with flying dust import 11.1, flying dust outlet 11.2, cooling import 11.3, coolant outlet 11.4, flying dust can be made to cool fast in inside, discharging after cooling through flying dust outlet 11.2 by rotating conveying.Wherein, the elevated-temperature seal ring of sealing system 4 can ensure the sealing between body of heater 6 and feed system 2, dynamical system 3, body of heater air inlet 6.1, can bear furnace pressure and be not less than 5000Pa gauge pressure.Wherein, in heating system 5, heating element heater is that electrical heating is wound around METAL HEATING PROCESS silk, electrically heated rod or high-temperature steam heat exchange, and body of heater 6 outer wall is evenly arranged heating element heater, and fill insulant material forms annular embracing layer.Dynamical system 3 provides the power needed for body of heater rotation, and control system 7 controls the power of dynamical system 3, adjustment rotating speed and the time of staying of flying dust in body of heater 6.Body of heater 6 inwall arranges track, and when body of heater is rotated, inner flying dust can move along helix to body of heater afterbody ash hole 6.3, has the effect stirring and longitudinally carry, and realizes continous way turnover flying dust.Control system 7 can set the rotating speed of dynamical system 3, the time of heating system 5 and temperature, can monitor body of heater 6 internal temperature, oxygen content, pressure, display display rotating speed, temperature, time, oxygen content, pressure.Control system 7 can realize control on the spot, DCS controls.Exhaust gas cooler 10 inside can make tail gas temperature in two minutes drop to less than 90 degrees Celsius for heat exchanger water-cooled or cooled with liquid nitrogen.Flying dust cooler 11 inside is that water-cooling heat-exchange device or spray can make flying dust temperature in two minutes drop to less than 90 degrees Celsius.Blanketing gas system 8 is feed system 2, body of heater 6, flying dust cooler 11 provide protective gas atmosphere (nitrogen, helium, argon gas, neon), controls oxygen volume content in body of heater 6 and is no more than 4%.
Below by specific embodiment, the present invention will be described, it should be noted that these embodiments are only used to illustration purpose, and can not be construed to limitation of the present invention by any way.In addition, in the examples below that if not otherwise specified, then adopted equipment and material are commercially available.
Embodiment 1:
The content of certain grate furnace incineration of refuse flyash Zhong bioxin is 705ngTEQ/Kg, according to processing method of the present invention, controlling reaction temperature is 320 degrees Celsius, reaction time is 70 minutes, reaction system oxygen content is kept to be not more than 2%(volume fraction), reacting system pressure is kept to be 1000Pa(gauge pressure), after reaction, use water-cooled, tail gas and solid residue temperature in 2 minutes is made to be reduced to 70 degrees Celsius, detection tail gas and solid residue Zhong content of dioxin summation are 6.3ngTEQ/Kg, and the degradation rate of flying dust Zhong bioxin is 99.1%.
Embodiment 2:
The content of certain grate furnace incineration of refuse flyash Zhong bioxin is 698ngTEQ/Kg, controlling reaction temperature is 320 degrees Celsius, reaction time is 70 minutes, reaction system oxygen content is kept to be not more than 2%(volume fraction), reacting system pressure is kept to be 1000Pa(gauge pressure), after reaction, naturally cool, make tail gas and solid residue after 30 minutes temperature be reduced to 70 degrees Celsius, detection tail gas and solid residue Zhong content of dioxin summation are 513ngTEQ/Kg, and the degradation rate of flying dust Zhong bioxin is 26.5%.
Embodiment 3:
The content of certain grate furnace incineration of refuse flyash Zhong bioxin is 724ngTEQ/Kg, according to processing method of the present invention, controlling reaction temperature is 550 degrees Celsius, reaction time is 70 minutes, reaction system oxygen content is kept to be not more than 2%(volume fraction), reacting system pressure is kept to be 1000Pa(gauge pressure), after reaction, use water-cooled, tail gas and solid residue temperature in 2 minutes is made to be reduced to 70 degrees Celsius, detection tail gas and solid residue Zhong content of dioxin summation are 365ngTEQ/Kg, and the degradation rate of flying dust Zhong bioxin is 49.59%.
Embodiment 4:
The content of certain grate furnace incineration of refuse flyash Zhong bioxin is 659ngTEQ/Kg, according to processing method of the present invention, controlling reaction temperature is 320 degrees Celsius, reaction time is 70 minutes, and maintenance reacting system pressure is negative pressure, after reaction, use water-cooled, make tail gas and solid residue temperature in 2 minutes be reduced to 70 degrees Celsius, detection tail gas and solid residue Zhong content of dioxin summation are 548ngTEQ/Kg, and the degradation rate of flying dust Zhong bioxin is 16.8%.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention when not departing from principle of the present invention and aim, revising, replacing and modification.
Claims (3)
1. for the treatment of an equipment for flying ash, it is characterized in that, comprising:
Dechlorination reaction device, described dechlorination reaction device, under the pressure of predetermined temperature and pressure-fired, in nonoxidizing atmosphere, makes bioxin generation dechlorination reaction in described flying dust, to obtain dechlorination process product;
Quickly cooling device, described quickly cooling device is connected with described dechlorination reaction device, and for cooling fast described dechlorination process product, to obtain treated flying ash, and
Pressure control device, described pressure control device is connected with described dechlorination reaction device, for described pressure-fired is controlled in the scope of 10Pa ~ 5000Pa,
Temperature control equipment, described temperature control equipment is connected with described dechlorination reaction device, for controlling in the scope of 200 ~ 320 degrees Celsius by described predetermined temperature.
2. the equipment for the treatment of flying ash according to claim 1, is characterized in that, described quickly cooling device is configured within the time being no more than 3 minutes, and described dechlorination process product is cooled to the temperature being no more than 90 degrees Celsius.
3. the equipment for the treatment of flying ash according to claim 1, is characterized in that, described quickly cooling device is water cooling plant.
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| CN201310049924.6A CN103127806B (en) | 2013-02-07 | 2013-02-07 | For the treatment of the equipment of flying ash |
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| CN201310049924.6A CN103127806B (en) | 2013-02-07 | 2013-02-07 | For the treatment of the equipment of flying ash |
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| CN103127806B true CN103127806B (en) | 2016-02-24 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126606A (en) * | 2015-07-29 | 2015-12-09 | 中国恩菲工程技术有限公司 | Method for low temperature pyrolysis-catalytic degradation treatment on burning fly ash volatile organic compounds |
| CN106731451A (en) * | 2016-12-07 | 2017-05-31 | 江西南方环保机械制造总公司 | Cremation Machine flue gas dioxin purifies adsorption system |
| CN107261788A (en) * | 2017-06-12 | 2017-10-20 | 北京科技大学 | The removal methods and device of a kind of high-temperature flue gas Zhong bioxin |
| CN108043864A (en) * | 2017-12-12 | 2018-05-18 | 中国恩菲工程技术有限公司 | The removing system of flying dust Zhong bioxin and mercury metal |
| CN114951231A (en) * | 2022-08-01 | 2022-08-30 | 中国恩菲工程技术有限公司 | Continuous fly ash harmless treatment method and system |
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| CA2261037A1 (en) * | 1996-07-18 | 1998-01-29 | Maria-Katharina Birkner | Additive to be sprayed into the combustion chambers of heating plants and process for preventing high temperature corrosion |
| CN101004267A (en) * | 2006-11-15 | 2007-07-25 | 龚德明 | Incineration equipment system of rotary kiln for hazardous waste garbage |
| CN101178181A (en) * | 2007-12-07 | 2008-05-14 | 中国航天空气动力技术研究院 | Plasma medical refuse burning methods |
| CN203183898U (en) * | 2013-02-07 | 2013-09-11 | 中国恩菲工程技术有限公司 | Device for treating incineration fly ash |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3694787B2 (en) * | 1999-10-29 | 2005-09-14 | 日立造船株式会社 | Thermal decomposition equipment for dioxin in ash |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2261037A1 (en) * | 1996-07-18 | 1998-01-29 | Maria-Katharina Birkner | Additive to be sprayed into the combustion chambers of heating plants and process for preventing high temperature corrosion |
| CN101004267A (en) * | 2006-11-15 | 2007-07-25 | 龚德明 | Incineration equipment system of rotary kiln for hazardous waste garbage |
| CN101178181A (en) * | 2007-12-07 | 2008-05-14 | 中国航天空气动力技术研究院 | Plasma medical refuse burning methods |
| CN203183898U (en) * | 2013-02-07 | 2013-09-11 | 中国恩菲工程技术有限公司 | Device for treating incineration fly ash |
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