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 PDFInfo
- 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
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/70—Blending
- F23G2201/701—Blending with additives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/10—Combustion in two or more stages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2203/00—Furnace arrangements
- F23G2203/20—Rotary drum furnace
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/30—Solid combustion residues, e.g. bottom or flyash
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/50206—Pelletising waste before combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/30—Halogen; Compounds thereof
- F23J2215/301—Dioxins; Furans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/30—Sorption devices using carbon, e.g. coke
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2700/00—Ash removal, handling and treatment means; Ash and slag handling in pulverulent fuel furnaces; Ash removal means for incinerators
- F23J2700/001—Ash removal, handling and treatment means
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies 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
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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201610943386.9A CN106524183A (en) | 2016-10-25 | 2016-10-25 | Method for achieving harmless disposal of garbage fly ash by means of rotary kiln technology |
Applications Claiming Priority (1)
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CN201610943386.9A CN106524183A (en) | 2016-10-25 | 2016-10-25 | Method for achieving harmless disposal of garbage fly ash by means of rotary kiln technology |
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CN201610943386.9A Pending CN106524183A (en) | 2016-10-25 | 2016-10-25 | Method for achieving harmless disposal of garbage fly ash by means of rotary kiln technology |
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Cited By (6)
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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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 |
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Cited By (7)
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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