CN101322905B - Method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas - Google Patents
Method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas Download PDFInfo
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- CN101322905B CN101322905B CN2008101368015A CN200810136801A CN101322905B CN 101322905 B CN101322905 B CN 101322905B CN 2008101368015 A CN2008101368015 A CN 2008101368015A CN 200810136801 A CN200810136801 A CN 200810136801A CN 101322905 B CN101322905 B CN 101322905B
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Abstract
The invention relates to a purification method for fume from the incineration of a concrete kiln and household waste, which pertains to a purification method for fume. The purification method solves the problems of the present purification technology for fume generated from the incineration of household waste that the purification process is long, the operation is complicated, the investment of treatment equipment is high, the purification cost is high and the purification effect is poor. The purification method comprises the following steps: 1. incineration; 2. acid removing and dust removing; 3. the fume after dust removing is sent into a rotary kiln of concrete burning for the secondary incineration; 4. the fume after the secondary incineration is filled into a moving bed-typed filling tower, and the tail gas after dust removing can be discharged into the air. The fume purification method of the invention is integrated with the production technology of concrete, thus reducing the rapid cooling step (for removing dioxin) and the purification device of acidic gas, omitting the purification treatment steps and running energy consumption, simplifying the operation and the control and reducing the investment of treatment equipment; moreover, the purification cost can be effectively lowered due to the production of concrete; all indexes of the gas discharged are superior to the Standard for Pollution Control on the Household Waste Incineration (GB18485-2001) of China.
Description
Technical field
The present invention relates to a kind of purification method of flue gas.
Background technology
The processing of house refuse mainly contains landfill, During High-Temperature Composting and three kinds of processing modes of burning at present.Garbage loading embeading is rubbish to be inserted underground, need take a large amount of soils, and the up time is short, and polluted underground water source easily.The high temperature garbage compost is to utilize microorganism that organic matter is fermented, degrades, but has only part rubbish can adopt this processing method, so must carry out sorting to rubbish before the garbage compost, has increased the intractability of rubbish.Though incineration treatment of garbage can overcome the defective of said method, and can make rubbish minimizing significantly, can reclaim simultaneously the heat that burns generation utilizes, but substance classes is various in the house refuse at present, composition is complicated day by day, contains a large amount of poisonous, harmful and strong carcinogenic substances in the flue gas that is produced that causes burning; The problem that existing flue gas purifying technique exists that the purified treatment step is many, complicated operation, treatment facility have high input, purify cost height and clean-up effect difference.
Summary of the invention
The problem that the objective of the invention is to have in order to solve present consumer waste incineration flue gas purifying technique that the purified treatment step is many, complicated operation, treatment facility has high input, purifies cost height and clean-up effect difference, and a kind of method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas that provides.
Method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas is realized according to the following steps: one, house refuse is dropped in the incinerator and burn; Two, to incineration tail gas depickling and dedusting; Three, the flue gas after the dedusting is sent into the rotary kiln secondary burning of calcining cement: secondary burns the air that is fed in the rotary kiln must be through The pre-heat treatment, and the air excess amount is 140%～200%; Four, the flue gas after secondary burns feeds the moving-bed type packed tower, and tail gas can enter atmosphere after dedusting; Wherein rotary kiln temperature is 1500～1700 ℃ in the step 3, is not less than 150 ℃ through the air themperature of The pre-heat treatment, and the time of staying of flue gas in rotary kiln is at least 2s; In the step 4 with wet cement green pellets as the packed tower filler.
In the method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas of the present invention in the consumer waste incineration flue gas unburnt organic pollution in the rotary kiln of 1500～1700 ℃ of calcining cements, fully burn again, decompose, and utilize in the step 4 wet cement green pellets further to purify pollutant residual in the flue gas as filler.
The inventive method combines with cement production process and has reduced chilling link (being used to remove dioxin) and acid gas purifying device, purified treatment step and operation energy consumption have been reduced, operation and control are simplified, reduced the input of treatment facility simultaneously, simultaneously because Cement Production can reduce the purification cost effectively.
(but the present domestic process integration that does not still have practicability in existing consumer waste incineration and the cement rotary kiln process integration, reason is that pollutant emission can not be up to standard) all be to utilize the heat of incineration flue gas cement slurry to be heated or drying, its purpose is the utilization again of heat energy, can not effectively remove and decompose the pollutant in the incineration flue gas; And the present invention utilizes the high temperature of rotary kiln combustion product gases once more, and is that packed tower carries out gas cleaning by moving bed, reaches the purpose of decomposing and removing the pollutant in the incineration flue gas.Adopt the inventive method to handle house refuse, the every index of its gas that gives off all is better than China's " consumer waste incineration pollution control criterion " (GB18485-2001).
The specific embodiment
Technical solution of the present invention is not limited to the following cited specific embodiment, also comprises any combination between each specific embodiment.
The specific embodiment one: the present embodiment method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas is realized according to the following steps: one, house refuse is dropped in the incinerator and burn; Two, to incineration tail gas depickling and dedusting; Three, the flue gas after the dedusting is sent into the rotary kiln secondary burning of calcining cement: secondary burns the air that is fed in the rotary kiln must be through The pre-heat treatment, and the air excess amount is 140%～200%; Four, the flue gas after secondary burns feeds the moving-bed type packed tower, and tail gas can enter atmosphere after dedusting; Wherein rotary kiln temperature is 1500～1700 ℃ in the step 3, is not less than 150 ℃ through the air themperature of The pre-heat treatment, and the time of staying of flue gas in rotary kiln is at least 2s; In the step 4 with wet cement green pellets as the packed tower filler.
Present embodiment adopts rotary kiln to be fit to extensive, high-quality Cement Production.
Because the formation and the character complexity of house refuse, therefore often contain acidic gaseous pollutants such as hydrogen chloride, hydrogen fluoride, sulfur dioxide, nitrogen oxide in the flue gas that produces after the waste incineration, and heavy metal contaminants such as unburned hydrocarbons, dioxin, furans and mercury, cadmium, lead.Predecessor (chloride, fluoride and the complicated organic matter) concentration that can generate dioxin after flue gas process depickling and secondary burn is extremely low, effectively controls the regeneration of dioxin; Flue gas feeds the moving-bed type packed tower again, wherein Shi cement green pellets can deodorizing, absorption and in and residual sour gas and adsorb dioxin residual in the flue gas, heavy metal and flue dust in the flue gas, prevent the pollution of atmosphere.
The air that is fed in the present embodiment rotary kiln must can be avoided the fluctuation of temperature in the rotary kiln through The pre-heat treatment (temperature is not less than 150 ℃), guarantees treatment effect.Present embodiment can adopt the mode of spray akaline liquid to the incineration tail gas depickling.Adopt the present embodiment method not influence the performance of cement.
The specific embodiment two: the difference of the present embodiment and the specific embodiment one is: the humidity of cement green pellets remains the water content of 12wt%～14wt% in the step 4.Other step and parameter are identical with embodiment one.
The specific embodiment three: the difference of the present embodiment and the specific embodiment one is: the granularity of cement green pellets is 5～22mm in the step 4, and the height of packed tower is 1.8～2.2m.Other step and parameter are identical with embodiment one.
The specific embodiment four: the difference of the present embodiment and the specific embodiment one is: the granularity of cement green pellets is 8～20mm in the step 4, and the height of packed tower is 2m.Other step and parameter are identical with embodiment one.
The specific embodiment five: the difference of the present embodiment and the specific embodiment one is: the granularity of cement green pellets is 10～17mm in the step 4, and the height of packed tower is 2m.Other step and parameter are identical with embodiment one.
The specific embodiment six: the difference of the present embodiment and the specific embodiment one is: adopt electrostatic precipitation or bag-type dust in the step 2.Other step and parameter are identical with embodiment one.
The specific embodiment seven: the difference of the present embodiment and the specific embodiment one is: rotary kiln temperature is 1550～1650 ℃ in the step 3.Other step and parameter are identical with embodiment one.
The specific embodiment eight: the difference of the present embodiment and the specific embodiment one is: rotary kiln temperature is 1600 ℃ in the step 3.Other step and parameter are identical with embodiment one.
The specific embodiment nine: the difference of the present embodiment and the specific embodiment one is: the air themperature through The pre-heat treatment in the step 3 is 160～200 ℃.Other step and parameter are identical with embodiment one.
The specific embodiment ten: the difference of the present embodiment and the specific embodiment one is: the air themperature through The pre-heat treatment in the step 3 is 170～190 ℃.Other step and parameter are identical with embodiment one.
The specific embodiment 11: the difference of the present embodiment and the specific embodiment one is: the air themperature through The pre-heat treatment in the step 3 is 180 ℃.Other step and parameter are identical with embodiment one.
The specific embodiment 12: the difference of the present embodiment and the specific embodiment one is: the time of staying of flue gas in rotary kiln is 2.5～5s in the step 3.Other step and parameter are identical with embodiment one.
The specific embodiment 13: the difference of the present embodiment and the specific embodiment one is: the time of staying of flue gas in rotary kiln is 3～4s in the step 3.Other step and parameter are identical with embodiment one.
The specific embodiment 14: the difference of the present embodiment and the specific embodiment one is: the air excess quantity is 150%～190% in the step 3.Other step and parameter are identical with embodiment one.
The specific embodiment 15: the difference of the present embodiment and the specific embodiment one is: the air excess quantity is 160%～180% in the step 3.Other step and parameter are identical with embodiment one.
The specific embodiment 16: the difference of the present embodiment and the specific embodiment one is: the air excess quantity is 170% in the step 3.Other step and parameter are identical with embodiment one.
Claims (8)
1. method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas is characterized in that method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas realizes according to the following steps: one, house refuse is dropped in the incinerator and burn; Two, to incineration tail gas depickling and dedusting; Three, the flue gas after the dedusting is sent into the rotary kiln secondary burning of calcining cement: secondary burns the air that is fed in the rotary kiln must be through The pre-heat treatment, and the air excess amount is 140%～200%; Four, the flue gas after secondary burns feeds the moving-bed type packed tower, and tail gas can enter atmosphere after dedusting; Wherein rotary kiln temperature is 1500～1700 ℃ in the step 3, is not less than 150 ℃ through the air themperature of The pre-heat treatment, and the time of staying of flue gas in rotary kiln is at least 2s; In the step 4 with wet cement green pellets as the packed tower filler.
2. a kind of method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas according to claim 1 is characterized in that the humidity of cement green pellets in the step 4 remains the water content of 12wt%～14wt%.
3. a kind of method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas according to claim 1, the granularity that it is characterized in that cement green pellets in the step 4 is 5～22mm, the height of packed tower is 1.8～2.2m.
4. a kind of method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas according to claim 1 is characterized in that adopting in the step 2 electrostatic precipitation or bag-type dust.
5. a kind of method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas according to claim 1 is characterized in that rotary kiln temperature is 1550～1650 ℃ in the step 3.
6. a kind of method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas according to claim 1 is characterized in that the air themperature through The pre-heat treatment is 160～200 ℃ in the step 3.
7. a kind of method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas according to claim 1 is characterized in that the time of staying of flue gas in rotary kiln is 2.5～5s in the step 3.
8. a kind of method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas according to claim 1 is characterized in that the air excess quantity is 150%～190% in the step 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101368015A CN101322905B (en) | 2008-07-28 | 2008-07-28 | Method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas |
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| CN2008101368015A CN101322905B (en) | 2008-07-28 | 2008-07-28 | Method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas |
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| CN101322905A CN101322905A (en) | 2008-12-17 |
| CN101322905B true CN101322905B (en) | 2011-11-30 |
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| CN2008101368015A Expired - Fee Related CN101322905B (en) | 2008-07-28 | 2008-07-28 | Method for purifying and processing cement revolving tubular kiln cooperated with consumer waste incineration flue gas |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102121700B (en) * | 2010-01-07 | 2012-12-12 | 上海煜工环保科技有限公司 | Rotary grate type garbage incineration treatment method and device |
| CN109611853A (en) * | 2018-12-19 | 2019-04-12 | 安徽节源环保科技有限公司 | A kind of method of dry-process cement rotary kiln collaboration processing house refuse |
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| US4546711A (en) * | 1983-10-24 | 1985-10-15 | Marblehead Lime Company | Apparatus and method for incinerating waste material with a converted preheater-type lime kiln |
| CN88101066A (en) * | 1988-02-27 | 1988-09-28 | 武汉工业大学 | Calcination method and equipment for vertical black raw material decomposing furnace |
| US4797091A (en) * | 1987-03-13 | 1989-01-10 | Krupp Polysius Ag | Method and apparatus for utilizing the heat energy of domestic and commercial refuse |
| DE19707884A1 (en) * | 1997-02-27 | 1998-09-03 | Hoelter Heinz | Flue gas treatment from waste incineration plants |
| CN2556496Y (en) * | 2002-08-09 | 2003-06-18 | 江瑞莲 | Harmless smoke treating device comined cement rotary kiln with house refuse incinerator |
| CN1556349A (en) * | 2004-01-05 | 2004-12-22 | 朱剑峰 | Domestic garbage treatment and cement rotary kiln combined production technology |
| CN1844747A (en) * | 2006-04-28 | 2006-10-11 | 合肥水泥研究设计院 | Cement rotary kiln and incinerator combined treatment system for urban domestic refuse |
| CN1981173A (en) * | 2004-05-10 | 2007-06-13 | Fl史密斯公司 | Method and apparatus for incineration of combustible waste. |
| WO2008056664A1 (en) * | 2006-11-06 | 2008-05-15 | Sumitomo Osaka Cement Co., Ltd. | Method of disposing of organic waste of high water content and disposal apparatus therefor |
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2008
- 2008-07-28 CN CN2008101368015A patent/CN101322905B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4546711A (en) * | 1983-10-24 | 1985-10-15 | Marblehead Lime Company | Apparatus and method for incinerating waste material with a converted preheater-type lime kiln |
| US4797091A (en) * | 1987-03-13 | 1989-01-10 | Krupp Polysius Ag | Method and apparatus for utilizing the heat energy of domestic and commercial refuse |
| CN88101066A (en) * | 1988-02-27 | 1988-09-28 | 武汉工业大学 | Calcination method and equipment for vertical black raw material decomposing furnace |
| DE19707884A1 (en) * | 1997-02-27 | 1998-09-03 | Hoelter Heinz | Flue gas treatment from waste incineration plants |
| CN2556496Y (en) * | 2002-08-09 | 2003-06-18 | 江瑞莲 | Harmless smoke treating device comined cement rotary kiln with house refuse incinerator |
| CN1556349A (en) * | 2004-01-05 | 2004-12-22 | 朱剑峰 | Domestic garbage treatment and cement rotary kiln combined production technology |
| CN1981173A (en) * | 2004-05-10 | 2007-06-13 | Fl史密斯公司 | Method and apparatus for incineration of combustible waste. |
| CN1844747A (en) * | 2006-04-28 | 2006-10-11 | 合肥水泥研究设计院 | Cement rotary kiln and incinerator combined treatment system for urban domestic refuse |
| WO2008056664A1 (en) * | 2006-11-06 | 2008-05-15 | Sumitomo Osaka Cement Co., Ltd. | Method of disposing of organic waste of high water content and disposal apparatus therefor |
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