CN107790480A - It is a kind of to utilize the method for transforming cement kiln processing Polluted Soil - Google Patents
It is a kind of to utilize the method for transforming cement kiln processing Polluted Soil Download PDFInfo
- Publication number
- CN107790480A CN107790480A CN201711015050.7A CN201711015050A CN107790480A CN 107790480 A CN107790480 A CN 107790480A CN 201711015050 A CN201711015050 A CN 201711015050A CN 107790480 A CN107790480 A CN 107790480A
- Authority
- CN
- China
- Prior art keywords
- polluted soil
- cement kiln
- transforming
- waste gas
- kiln
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B2101/00—Type of solid waste
- B09B2101/02—Gases or liquids enclosed in discarded articles, e.g. aerosol cans or cooling systems of refrigerators
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The method for transforming cement kiln processing Polluted Soil is utilized the present invention relates to a kind of.The invention belongs to Polluted Soil processing technology field.It is a kind of to utilize the method for transforming cement kiln processing Polluted Soil, including technical process：(1) cement kiln feeding point is transformed, makes Polluted Soil in cement kiln residence time >=35min；(2) Polluted Soil is sent into rotary kiln from cement kiln tail feeding point, makes Polluted Soil in rotary kiln high temperature section residence time >=10min so that the parsing of volatility organic contamination composition desorption, high temperature section desorption temperature >=650 DEG C in Polluted Soil；(3) Polluted Soil cooling waste gas is sent into dore furnace incineration disposal as the combustion air of dore furnace；(4) Polluted Soil is volatile organic pollution soil, and rotary kiln is desorbed out waste gas and enters dore furnace, calciner temperature >=1000 DEG C, residence time >=4s of high exhaust temperatures section, realizes that high temperature incineration is handled.The present invention has the advantages that disposal ability is big, pollutant component desorption is thorough, non-secondary pollution, processing cost are low, resource is comprehensively utilized.
Description
Technical field
The invention belongs to Polluted Soil processing technology field, and cement kiln processing Polluted Soil is transformed more particularly to a kind of utilize
Method.
Background technology
At present, as the continuous quickening of process of industrialization, the unreasonable exploitation and its smelting of mineral resources are discharged, are long-term right
Soil carries out the reason such as administration of atmospheric sedimentation, chemical fertilizer and agricultural chemicals caused by sewage irrigation and sludge administration, human activity, causes
Soil pollution is serious.Soil pollution can cause a series of problems, as soil pollution by food chain is enriched to human body and animal
In, human body and animal health are caused to seriously endanger.In addition, after soil pollution, other environment such as air, water body can be caused secondary
Problem, serious conditions directly result in ecological problem around next time.
Soil pollutant, 4 classes, i.e. organic pollution, heavy metal, radioactive element are generally can be divided into by the property of pollutant
And pathogenic microorganism.The pollutant ownership volatile organic pollutant that this method is directed to.At present, to volatility organic contamination Tu Chu
Reason technology is mainly Thermal desorption method and light degradation method.Thermal desorption method and light degradation method, it is small treatment scale to be present, processing cost
It is high, it is more difficult to the technical problem such as popularization.
The content of the invention
The present invention provides a kind of utilize for technical problem present in solution known technology and transforms cement kiln processing pollution
The method of soil.
It is an object of the invention to provide one kind have disposal ability is big, pollutant component desorption thoroughly, non-secondary pollution, processing
Cost is low, resource is comprehensively utilized, it is applied widely the features such as utilization transform cement kiln processing Polluted Soil method.
A kind of method for handling Polluted Soil using cement kiln is transformed, comprises the following steps：
1st, existing cement kiln, including transformation feeding point, smoke-box structure, burner of decomposition furnace etc. are transformed.
2nd, Polluted Soil is sent into rotary kiln from improved cement kiln tail feeding point, Polluted Soil is stopped in rotary kiln high temperature section
Stay certain time so that volatile organic contaminant pollutant component desorption parsing in Polluted Soil.The high temperature section residence time >=
10min, high temperature section desorption temperature >=650 DEG C.
3rd, Polluted Soil cooling waste gas is sent into dore furnace incineration disposal as the combustion air of dore furnace.
3rd, rotary kiln is desorbed out waste gas and realizes that high temperature incineration is handled into dore furnace.Calciner temperature >=1000 DEG C, stop
Time >=4s.
4th, dore furnace sprays into lime stone, removes acid waste gas.
5th, powder product re-uses as cement producting material after desorption parsing.
The present invention is adopted the technical scheme that using the method for transforming cement kiln processing Polluted Soil：
A kind of method for handling Polluted Soil using cement kiln is transformed, is characterized in：Polluted Soil is handled using cement kiln is transformed
Method include technical process：
1. transforming cement kiln feeding point, make Polluted Soil in cement kiln residence time >=35min；
2. Polluted Soil from cement kiln tail feeding point be sent into rotary kiln, make Polluted Soil the rotary kiln high temperature section residence time >=
10min so that the parsing of volatility organic contamination composition desorption, high temperature section desorption temperature >=650 DEG C in Polluted Soil；
3. Polluted Soil cools down waste gas and is sent into dore furnace incineration disposal as the combustion air of dore furnace；
4. Polluted Soil is volatile organic contaminant Polluted Soil, rotary kiln is desorbed out waste gas and enters dore furnace, decomposes furnace temperature
>=1000 DEG C, residence time >=4s of hydrogen cyanide of degree, realize that high temperature incineration is handled.
The present invention can also be adopted the following technical scheme that using the method for transforming cement kiln processing Polluted Soil：
The method that cement kiln processing Polluted Soil is transformed in described utilization, is characterized in：Polluted Soil stops in cement kiln high-temperature section
It is 10-20min to stay the time, and high temperature section desorption temperature is 650-800 DEG C.
The method that cement kiln processing Polluted Soil is transformed in described utilization, is characterized in：Rotary kiln is desorbed out waste gas entrance point
When solving stove, calciner temperature is 900-1100 DEG C, and the residence time of waste gas is 4-8s.
The method that cement kiln processing Polluted Soil is transformed in described utilization, is characterized in：Dore furnace sprays into lime stone, is taken off
Except acid exhaust-gas treatment.
The method that cement kiln processing Polluted Soil is transformed in described utilization, is characterized in：Powder product conduct after desorption parsing
Cement producting material re-uses.
The present invention has the advantages and positive effects of：
Using the method for cement kiln processing Polluted Soil is transformed as a result of the brand-new technical scheme of the present invention, with existing skill
Art is compared, and the present invention has following evident characteristic：
1st, using the above method, thoroughly desorption removing toxic substances in large-scale, high-efficiency, non-secondary pollution can be carried out to Polluted Soil.
2nd, system waste heat can effective recycling.
3rd, Polluted Soil can be used as cement producting material after being desorbed, and realize comprehensive utilization of resources.
4th, it is desorbed out waste gas to grow in the processing of dore furnace high temperature incineration, residence time, does not discharge exceeded risk.
Brief description of the drawings
Fig. 1 is that the present invention utilizes the process flow diagram for transforming cement kiln processing Polluted Soil.
Embodiment
In order to further understand the content, features and effects of the present invention, hereby enumerating following examples, and coordinate accompanying drawing
Describe in detail as follows：
Refering to accompanying drawing 1.
Embodiment 1
It is a kind of to utilize the method for transforming cement kiln processing Polluted Soil, including technical process：
1. transforming cement kiln feeding point, make Polluted Soil in cement kiln residence time >=35min；
2. Polluted Soil is sent into rotary kiln from cement kiln tail feeding point, make Polluted Soil in the rotary kiln high temperature section residence time
15min so that the parsing of volatile organic contaminant pollutant component desorption, high temperature section desorption temperature >=700 DEG C in Polluted Soil；
3. Polluted Soil cools down waste gas and is sent into dore furnace incineration disposal as the combustion air of dore furnace；
4. Polluted Soil is volatile organic contaminant Polluted Soil, rotary kiln is desorbed out waste gas and enters dore furnace, decomposes furnace temperature
Spend for 1000 DEG C, the residence time 6s of waste gas, realize that high temperature incineration is handled.
Dore furnace sprays into lime stone, carries out removing acid waste gas processing.Powder product is as manufacture of cement after desorption parsing
Raw material re-uses.
The present embodiment has by transforming existing cement kiln, and pollutant in Polluted Soil is desorbed using improved rotary kiln,
The dusty gas being desorbed out is disposed by dore furnace high temperature incineration, and rear end cooling material hot waste gas is sent into dore furnace incineration disposal.
It is effective to realize that volatility organic contamination figure Polluted Soil is extensive, thorough desorption removing toxic substances of high efficiency, low cost, it is dirty so as to reach
The purpose of dye soil is innoxious, disposal of resources utilizes.
Claims (5)
1. it is a kind of using the method for transforming cement kiln processing Polluted Soil, it is characterized in that：Polluted Soil is handled using cement kiln is transformed
Method includes technical process：
(1) cement kiln feeding point is transformed, makes Polluted Soil in cement kiln residence time >=35min；
(2) Polluted Soil from cement kiln tail feeding point be sent into rotary kiln, make Polluted Soil the rotary kiln high temperature section residence time >=
10min so that the parsing of volatile organic contaminant pollutant component desorption, high temperature section desorption temperature >=650 DEG C in Polluted Soil；
(3) Polluted Soil cooling waste gas is sent into dore furnace incineration disposal as the combustion air of dore furnace；
(4) Polluted Soil is volatile organic contaminant Polluted Soil, and rotary kiln is desorbed out waste gas and enters dore furnace, calciner temperature >=
1000 DEG C, residence time >=4s of waste gas, realize that high temperature incineration is handled.
2. it is according to claim 1 using the method for transforming cement kiln processing Polluted Soil, it is characterized in that：Polluted Soil is in cement
The kiln high temperature section residence time is 10-20min, and high temperature section desorption temperature is 650-800 DEG C.
3. it is according to claim 1 or 2 using the method for transforming cement kiln processing Polluted Soil, it is characterized in that：Rotary kiln takes off
It is attached go out waste gas when entering dore furnace, calciner temperature is 900-1100 DEG C, and the residence time for being desorbed waste gas is 4-8s.
4. it is according to claim 1 or 2 using the method for transforming cement kiln processing Polluted Soil, it is characterized in that：Dore furnace sprays
Enter lime stone, carry out removing acid waste gas processing.
5. it is according to claim 1 or 2 using the method for transforming cement kiln processing Polluted Soil, it is characterized in that：Desorption parsing
Powder product re-uses as cement producting material afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711015050.7A CN107790480A (en) | 2017-10-26 | 2017-10-26 | It is a kind of to utilize the method for transforming cement kiln processing Polluted Soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711015050.7A CN107790480A (en) | 2017-10-26 | 2017-10-26 | It is a kind of to utilize the method for transforming cement kiln processing Polluted Soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107790480A true CN107790480A (en) | 2018-03-13 |
Family
ID=61547923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711015050.7A Withdrawn CN107790480A (en) | 2017-10-26 | 2017-10-26 | It is a kind of to utilize the method for transforming cement kiln processing Polluted Soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107790480A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113277768A (en) * | 2021-06-07 | 2021-08-20 | 天津市建筑材料科学研究院有限公司 | Method for improving hydration activity of desorbed soil generated by treating polluted soil in cement kiln |
| CN113432129A (en) * | 2021-06-24 | 2021-09-24 | 天津金隅振兴环保科技有限公司 | Cement kiln treatment process for municipal sludge |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011057465A (en) * | 2009-09-07 | 2011-03-24 | Taiheiyo Cement Corp | Quick lime production system and method of producing the same |
| CN102218444A (en) * | 2011-03-24 | 2011-10-19 | 华新环境工程有限公司 | Method for cooperative treatment of polluted soil with cement kiln |
| CN202038989U (en) * | 2011-03-24 | 2011-11-16 | 华新环境工程有限公司 | Contaminated soil coordination treatment system in cement kiln |
| CN106986566A (en) * | 2017-06-02 | 2017-07-28 | 天津振兴水泥有限公司 | A kind of disposing technique of the Polluted Soil containing cyanogen |
| CN107120663A (en) * | 2017-04-20 | 2017-09-01 | 金圆水泥股份有限公司 | A kind of organic contamination soil and solid waste combination treatment method |
-
2017
- 2017-10-26 CN CN201711015050.7A patent/CN107790480A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011057465A (en) * | 2009-09-07 | 2011-03-24 | Taiheiyo Cement Corp | Quick lime production system and method of producing the same |
| CN102218444A (en) * | 2011-03-24 | 2011-10-19 | 华新环境工程有限公司 | Method for cooperative treatment of polluted soil with cement kiln |
| CN202038989U (en) * | 2011-03-24 | 2011-11-16 | 华新环境工程有限公司 | Contaminated soil coordination treatment system in cement kiln |
| CN107120663A (en) * | 2017-04-20 | 2017-09-01 | 金圆水泥股份有限公司 | A kind of organic contamination soil and solid waste combination treatment method |
| CN106986566A (en) * | 2017-06-02 | 2017-07-28 | 天津振兴水泥有限公司 | A kind of disposing technique of the Polluted Soil containing cyanogen |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113277768A (en) * | 2021-06-07 | 2021-08-20 | 天津市建筑材料科学研究院有限公司 | Method for improving hydration activity of desorbed soil generated by treating polluted soil in cement kiln |
| CN113432129A (en) * | 2021-06-24 | 2021-09-24 | 天津金隅振兴环保科技有限公司 | Cement kiln treatment process for municipal sludge |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180313 |
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| WW01 | Invention patent application withdrawn after publication |