CN106524183A - Method for achieving harmless disposal of garbage fly ash by means of rotary kiln technology - Google Patents

Method for achieving harmless disposal of garbage fly ash by means of rotary kiln technology Download PDF

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Publication number
CN106524183A
CN106524183A CN201610943386.9A CN201610943386A CN106524183A CN 106524183 A CN106524183 A CN 106524183A CN 201610943386 A CN201610943386 A CN 201610943386A CN 106524183 A CN106524183 A CN 106524183A
Authority
CN
China
Prior art keywords
rotary kiln
flue gas
flying ash
kiln technology
garbage flying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610943386.9A
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Chinese (zh)
Inventor
龚文渠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Wen Channel Environmental Protection Technology Co Ltd
Original Assignee
Chongqing Wen Channel Environmental Protection Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Wen Channel Environmental Protection Technology Co Ltd filed Critical Chongqing Wen Channel Environmental Protection Technology Co Ltd
Priority to CN201610943386.9A priority Critical patent/CN106524183A/en
Publication of CN106524183A publication Critical patent/CN106524183A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/02Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/04Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/06Arrangements of devices for treating smoke or fumes of coolers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00Pretreatment
    • F23G2201/70Blending
    • F23G2201/701Blending with additives
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00Combustion
    • F23G2202/10Combustion in two or more stages
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2203/00Furnace arrangements
    • F23G2203/20Rotary drum furnace
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00Specific waste
    • F23G2209/30Solid combustion residues, e.g. bottom or flyash
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00Special features of, or arrangements for incinerators
    • F23G2900/50206Pelletising waste before combustion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00Preventing emissions
    • F23J2215/30Halogen; Compounds thereof
    • F23J2215/301Dioxins; Furans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2219/00Treatment devices
    • F23J2219/30Sorption devices using carbon, e.g. coke
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2700/00Ash removal, handling and treatment means; Ash and slag handling in pulverulent fuel furnaces; Ash removal means for incinerators
    • F23J2700/001Ash removal, handling and treatment means
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/30Technologies for a more efficient combustion or heat usage

Abstract

The invention provides a method for achieving harmless disposal of garbage fly ash by means of a rotary kiln technology. According to the method, the rotary kiln technology is utilized, the processes of burdening, uniform mixing, pelleting, screening, feeding, igniting, calcining, residue collecting, flue gas purifying and the like are used for achieving harmless disposal of the garbage fly ash, harmless disposal is achieved, and meanwhile residues can be used as building materials, so that the purposes of harmlessness, stabilization, reduction and reclamation of the garbage fly ash are achieved.

Description

Using the method for rotary kiln technology harmlessness disposing garbage flying ash
Technical field
The invention belongs to fixed-end forces field, specifically, is related to a kind of using rotary kiln technology harmlessness disposing rubbish The method of flying dust.
Background technology
Domestic garbage incineration flyash refers to residue, stove obtained by collection in garbage incinerating power plant flue gas purification system Grate furnace produces flying dust and accounts for burning away the refuse (3~5) % of total amount, and fluidized bed incinerator produces flying dust and accounts for total amount of burning away the refuse 10%.Domestic garbage incineration flyash contains the poisonous and harmful substance such as substantial amounts of heavy metal and two English, and the World Health Organization is international Two English are defined as one-level carcinogenic substance by DKFZ.According to statistics, so far, garbage incinerating power plant is built up in the whole nation More than 300, house refuse is processed day up to more than 30 ten thousand tons.It is estimated that incineration of refuse flyash year yield is up to 3,200,000 tons or so, and And cumulative year after year.Therefore it is badly in need of carrying out harmless treatment and comprehensive utilization of resources.
Substantial amounts of garbage flying ash cannot get effective process, it will human health and Environmental security are brought and is had a strong impact on, Limit the development of waste incineration and generating electricity industry and China's recycling economy.
The method for processing at present has:Solidification landfill, washing stabilization processes, heat treatment, chemical stabilization process, heavy metal Extraction, bioleaching processing method, electroosmose process etc..Existing treatment technology, all cannot carry out economical and effective to garbage flying ash Harmless treatment and recycling, need a kind of effective, economically viable garbage flying ash harmless treatment and money badly The new technology of source comprehensive utilization.
Method of the roasting as garbage flying ash is processed, because its speed is fast, floor space is little, it is not necessary to which long term storage etc. is significantly Advantage, becomes the Main way of garbage flying ash disposal.But not currently exist can harmless treatment while, and can realize The technology of the comprehensive utilization of garbage flying ash.
The content of the invention
It is an object of the invention to provide a kind of method that employing roasting method realizes harmlessness disposing garbage flying ash, that is, utilize Rotary kiln technology harmlessness disposing garbage flying ash, while harmlessness disposing is realized, residue can be used as construction material.
A kind of method of utilization rotary kiln technology harmlessness disposing garbage flying ash, is carried out as follows:
(1) allocate into chlorine agent 10-14 parts, combustion adjuvant 12-18 parts is inhaled in the garbage flying ash of 70-80 parts according to parts by weight Face;
(2) material for preparing is mixed into batch mixer;
(3) will through the material for mixing into surge bunker and even into disc balling machine, while adding organic adhesive to make Ball, ball Task-size Controlling is in 6-12mm;
(4) the flying dust pelletizing made is entered into flying dust pelletizing surge bunker and Jing after roll screen screening even into cylinder of rotary kiln Middle roasting, sintering temperature are controlled at >=1000 DEG C, realize flying dust high-temperature detoxification;
(5) residue after roasting is collected into stand-by, the flue gas produced in roasting process after flue gas purification system process, Pass through smoke evacuation system qualified discharge again.
Above-mentioned flue gas purification system include dual firing chamber, heat exchanger, chilling tower, wet method depickling, blender, sack cleaner, Active carbon adsorber and water treatment system.
Jing after the flue gas of flue gas purification system process reaches discharge standard, heat up through heat exchanger in flue gas smoke evacuation system By smoke stack emission.
Above-mentioned steps (5) are collected stand-by residue and are used as the construction materials such as brickmaking.
Above-mentioned dual firing chamber's temperature is >=1100 DEG C.
The control of two English:Garbage flying ash temperature >=1000 DEG C during rotary kiln baking, higher sintering temperature make Two English thoroughly decompose, while the suction chlorine agent for adding generates CaCl2, prevent the generation of two English;During flue gas cool-down, meeting Two English of composite part, the system adopt secondary charcoal absorption, once before sack cleaner, are sprayed into by venturi mixer Activated carbon powder, removes more than 95% two English, another secondary after sack cleaner, adds active carbon adsorber, its two English Removal efficiency reaches more than 99%.
The control of heavy metal:Heavy metal in garbage flying ash in roasting process, due to sintering temperature reach 1000 DEG C with On, make heavy metallic oxide be melt into liquid phase, liquid phase forms glass melt in cooling procedure, and heavy metal no longer produces leaching Toxicity, fully meets national heavy metal Leaching requirement.
Rotary kiln baking system adopts micro-negative pressure operation, flue gas and dust to be easy to collection neutralization and collects, and environmental condition is good, will not Produce secondary pollution.
Sewage Jing water treatment systems process Posterior circle use, the dedusting ash produced in production process and sewage disposal generation Sludge returns circulation adapted.
Beneficial effect:The garbage flying ash that the large and fast speed of social recoverable amount increases after the process of this process system, residue Building materials raw material is can serve as, while the flue gas produced in roasting process fully achieves qualified discharge after treatment, does not have two Secondary pollution.It is finally reached the purpose of " innoxious, stabilisation, minimizing, resource ".
Description of the drawings
Fig. 1 is present invention process flow chart.
Specific embodiment
Embodiment:
Below in conjunction with the accompanying drawings to being explained in detail using the method for rotary kiln technology harmlessness disposing garbage flying ash:
As shown in Figure 1:Garbage flying ash is allocated into suction chlorine agent, combustion adjuvant by a certain percentage;
The material for preparing is mixed into batch mixer;
The material for mixing will through into surge bunker and even into disc balling machine, while organic adhesive pelletizing is added, Ball Task-size Controlling is in 6-12mm;
The flying dust pelletizing made is sent in rotary kiln end Jing after roll screen screening, the rubbish after ignition system fires Flying dust pelletizing is moved in revolution roasting in kilns and in rotary kiln rotary course to kiln tail, when reaching kiln tail in garbage flying ash pelletizing Combustion adjuvant burn completely, in garbage flying ash residue, the harmful substance such as two English residue collects residue storehouse through mucking machine In.Residue is sent to Building Materials Factory as building materials raw material.
Flue gas in rotary kiln enters dual firing chamber, the temperature >=1100 DEG C (burner fuel of dual firing chamber under fan action Using natural gas or liquefied gas), the harmful substances such as two English is decomposed at high temperature.Then flue gas sequentially passes through heat exchanger, urgency Cold tower, wet method depickling, blender, sack cleaner, active carbon adsorber, heat exchanger, chimney realize qualified discharge.Wet method depickling Water circulation use, when recirculated water fail or sludge concentration it is exceeded when Jing water treatment system process after it is recycled, generation The dedusting ash that sludge and sack cleaner are produced returns circular treatment after collecting.
Finally illustrate, preferred embodiment above is only unrestricted to illustrate technical scheme, although logical Cross above preferred embodiment to be described in detail the present invention, it is to be understood by those skilled in the art that can be Various changes are made to which in form and in details, without departing from the scope of the claims in the present invention.

Claims (6)

1. a kind of method of utilization rotary kiln technology harmlessness disposing garbage flying ash, is carried out as follows:
(1) allocate into chlorine agent 10-14 parts, combustion adjuvant 12-18 parts is inhaled inside the garbage flying ash of 70-80 parts according to parts by weight;
(2) material for preparing is mixed;
(3) will through the material for mixing into surge bunker and even into disc balling machine, while adding organic adhesive pelletizing, ball Task-size Controlling is in 6-12mm;
(4) by the flying dust pelletizing made Jing roll screen screening after enter flying dust pelletizing surge bunker and even into cylinder of rotary kiln in roast Burn, sintering temperature is controlled at >=1000 DEG C, realizes flying dust high-temperature detoxification;
(5) residue after roasting is collected into stand-by, the flue gas produced in roasting process is after flue gas purification system process, then leads to Cross smoke evacuation system qualified discharge.
2. a kind of method of utilization rotary kiln technology harmlessness disposing garbage flying ash according to claim 1, it is characterised in that: The flue gas purification system includes that dual firing chamber, heat exchanger, chilling tower, wet method depickling, blender, sack cleaner, activated carbon are inhaled Adnexa and water treatment system.
3. a kind of method of utilization rotary kiln technology harmlessness disposing garbage flying ash according to claim 1, it is characterised in that: Jing after the flue gas of flue gas purification system process reaches discharge standard, in the flue gas smoke evacuation system after heat exchanger heats up Jing chimneys Discharge.
4. a kind of method of utilization rotary kiln technology harmlessness disposing garbage flying ash according to claim 1, it is characterised in that: The step (5) is collected stand-by residue and is used as the construction materials such as brickmaking.
5. a kind of method of utilization rotary kiln technology harmlessness disposing garbage flying ash according to claim 2, it is characterised in that: Dual firing chamber's temperature is >=1100 DEG C.
6. a kind of method of utilization rotary kiln technology harmlessness disposing garbage flying ash according to claim 2, it is characterised in that: During the gas cleaning, two English are removed using secondary charcoal absorption, once before sack cleaner, by venturi mixer Activated carbon powder is sprayed into, more than 95% two English are removed, it is another secondary after sack cleaner, add active carbon adsorber.
CN201610943386.9A 2016-10-25 2016-10-25 Method for achieving harmless disposal of garbage fly ash by means of rotary kiln technology Pending CN106524183A (en)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107906526A (en) * 2017-11-10 2018-04-13 重庆盎瑞悦科技有限公司 A kind of harmless treatment process of garbage flying ash
CN108480360A (en) * 2018-03-04 2018-09-04 天津壹鸣环境科技股份有限公司 Novel method for recycling fly ash resources and discharging tail gas in ultra-clean mode by adopting rotary kiln melting method
CN109265029A (en) * 2018-10-11 2019-01-25 清华大学 A method of preparing alloyed iron and cement material
CN109404916A (en) * 2018-10-31 2019-03-01 重庆盎瑞悦科技有限公司 A kind of incineration of refuse flyash high-temperature fusion harmless treatment process
IT201900011970A1 (en) * 2019-08-09 2021-02-09 Gianfranco Gonella Apparatus for the inertization of ashes and dangerous dust by means of the sintering technique
CN113357908A (en) * 2021-06-03 2021-09-07 周天津 Baked brick tunnel kiln and method for treating fly ash by using same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN101182144A (en) * 2007-11-21 2008-05-21 清华大学 Cement kiln calcining resource method for domestic waste burning fly ash
CN101569890A (en) * 2009-05-25 2009-11-04 北京新北水水泥有限责任公司 New disposal method of fly ash
CN101781595A (en) * 2010-03-05 2010-07-21 宁波双翼能源科技有限公司 Production method of solid type fuel
JP2013202593A (en) * 2012-03-29 2013-10-07 Osaka Gas Co Ltd Treatment method and treatment apparatus of incineration ash
CN103551358A (en) * 2013-09-30 2014-02-05 天津壹鸣环境工程有限公司 Garbage burning fly ash sintering harm-eliminating resource-utilization treatment system
CN105716092A (en) * 2016-03-05 2016-06-29 东北石油大学 System treatment method for oil field oily sludge

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1987202A (en) * 2005-12-21 2007-06-27 中国科学院大连化学物理研究所 Method and its device for garbage burning and flyash incinerating treatment
CN101182144A (en) * 2007-11-21 2008-05-21 清华大学 Cement kiln calcining resource method for domestic waste burning fly ash
CN101569890A (en) * 2009-05-25 2009-11-04 北京新北水水泥有限责任公司 New disposal method of fly ash
CN101781595A (en) * 2010-03-05 2010-07-21 宁波双翼能源科技有限公司 Production method of solid type fuel
JP2013202593A (en) * 2012-03-29 2013-10-07 Osaka Gas Co Ltd Treatment method and treatment apparatus of incineration ash
CN103551358A (en) * 2013-09-30 2014-02-05 天津壹鸣环境工程有限公司 Garbage burning fly ash sintering harm-eliminating resource-utilization treatment system
CN105716092A (en) * 2016-03-05 2016-06-29 东北石油大学 System treatment method for oil field oily sludge

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107906526A (en) * 2017-11-10 2018-04-13 重庆盎瑞悦科技有限公司 A kind of harmless treatment process of garbage flying ash
CN108480360A (en) * 2018-03-04 2018-09-04 天津壹鸣环境科技股份有限公司 Novel method for recycling fly ash resources and discharging tail gas in ultra-clean mode by adopting rotary kiln melting method
CN108480360B (en) * 2018-03-04 2022-05-27 天津壹鸣环境科技股份有限公司 Method for recycling fly ash resources and discharging tail gas in ultra-clean mode by melting method of rotary kiln
CN109265029A (en) * 2018-10-11 2019-01-25 清华大学 A method of preparing alloyed iron and cement material
CN109404916A (en) * 2018-10-31 2019-03-01 重庆盎瑞悦科技有限公司 A kind of incineration of refuse flyash high-temperature fusion harmless treatment process
IT201900011970A1 (en) * 2019-08-09 2021-02-09 Gianfranco Gonella Apparatus for the inertization of ashes and dangerous dust by means of the sintering technique
CN113357908A (en) * 2021-06-03 2021-09-07 周天津 Baked brick tunnel kiln and method for treating fly ash by using same

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