CN1119209C - Comprehensive innocuous utilization technique of lake and city sludge - Google Patents
Comprehensive innocuous utilization technique of lake and city sludge Download PDFInfo
- Publication number
- CN1119209C CN1119209C CN 01108478 CN01108478A CN1119209C CN 1119209 C CN1119209 C CN 1119209C CN 01108478 CN01108478 CN 01108478 CN 01108478 A CN01108478 A CN 01108478A CN 1119209 C CN1119209 C CN 1119209C
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- China
- Prior art keywords
- sludge
- lake
- mud
- comprehensive utilization
- solidifying agent
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- 239000010802 sludge Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title abstract description 15
- 238000002844 melting Methods 0.000 claims abstract description 16
- 230000008018 melting Effects 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002893 slag Substances 0.000 claims abstract description 9
- 238000005516 engineering process Methods 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims abstract description 7
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 7
- 239000011593 sulfur Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000002918 waste heat Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000292 calcium oxide Substances 0.000 claims description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 3
- DQMUQFUTDWISTM-UHFFFAOYSA-N O.[O-2].[Fe+2].[Fe+2].[O-2] Chemical compound O.[O-2].[Fe+2].[Fe+2].[O-2] DQMUQFUTDWISTM-UHFFFAOYSA-N 0.000 claims description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
- 239000000920 calcium hydroxide Substances 0.000 claims description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
- 239000004035 construction material Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- 239000000460 chlorine Substances 0.000 abstract description 5
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052801 chlorine Inorganic materials 0.000 abstract description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 238000011012 sanitization Methods 0.000 abstract 2
- 239000004566 building material Substances 0.000 abstract 1
- 239000000779 smoke Substances 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 3
- 239000011449 brick Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 230000001473 noxious effect Effects 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- -1 copper metals Chemical class 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000185 dioxinlike effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 235000021393 food security Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The present invention relates to a technology of the sanitizing comprehensive utilization of lake and urban sludge, which belongs to the field of sludge incineration processing and comprehensive utilization. In the present invention, lake and urban sludge is salvaged, collected and dried, is added with sulfur solidifying agent and chlorine solidifying agent matching materials and is put in a melting furnace for being sanitized; high temperature smoke gas after melting and combustion enters a secondary burner, enters a preheating boiler after being completely combusted for recovering residual heat and is expelled; molten slag can be made into building materials. The present invention is a comprehensive utilization technique which can sanitize sludge, reduce the quantity of sludge causes sludge to be changed into resources, has strong adaptability to various kinds of lake and urban sludge and can efficiency remove the influence of harmful substances of dioxin, etc. on environment.
Description
Technical field:
The invention belongs to sludge incineration processing and comprehensive utilization technique field
Background technology:
Along with the expansion day by day and the rapid economy development of city size, the quantum of output of municipal sludge constantly increases and brings serious harm for the ecological environment in The Surroundings in Cities and near river.The sharp increase of municipal sludge amount has brought obstacle to urban construction.Municipal sludge has accounted for very big ratio in the huge municipal refuse mountain.
In recent years, because for many years accumulation and never have effective treating method, the mud in lake pollutes and peripheral ecological environment is constituted a serious threat.It just is example with the Dian Chi, at present because the effective improvement method of neither one of going back is polluted in the Dian Chi, it is a thick layer of to have made mud deposit at the bottom of the pond, Dian Chi, and only 6.4 kilometers bank mud scums just reach more than 80,000 cubic metre, and the careless seabed mud area of Dian Chi reaches about 7.5 square kilometres.Mud and the marine nutritional labelings such as nitrogen, phosphorus that are rich in of grass provide sufficient nutrient to algae, make the algae overgrowing to be difficult to control, cause a large amount of aquatic animal death, and the self-purification capacity of Dian Chi is sharply descended; In addition, as various noxious materials and heavy metal element in the mud not being administered, then other method of administering the Dian Chi also is difficult to obtain effect in a short time.
Known Treatment of Sludge technology is also relatively backward, and most the employing applied fertilizer or the stacking processing, seldom uses the method for other efficient pollution-frees.Fertilizer treatment is a more traditional technology, but cause mud to second environmental pollution easily during fertilising, heavy metal in the mud enters into ecological environment with the fertilising process, this is to soil, plant, underground water, even atmosphere causes secondary pollution, simultaneously food security is constituted a serious threat, seriously the living environment of harm humans and health.At present various countries just be devoted to seek new innoxious, subtract appearanceization and resource method for sludge treatment.Mud carried out burning disposal as low calorie fuels because its have well innoxious, subtract appearanceization and the resource effect comes into one's own in some developed countries.But because traditional incineration temperature is lower, generally at 800~1000 ℃, other composition (as elements such as Cl, S) in the mud easily generates new noxious pollutants such as dioxin when burning.And various countries attach great importance to the pollution problem of dioxin violent in toxicity in recent years, so prior art can not adapt to the environmental requirement of current strictness.
Summary of the invention:
The objective of the invention is to propose a kind of innoxious, subtract appearanceization and resource mud melting incinerating comprehensive utilization technique, it not only can reduce mud and utilize the generation of dioxin-like chemical in the process in burning, and realizes lake and municipal sludge comprehensive reutilization.
Description of drawings:
The present invention is achieved through the following technical solutions.
The specific embodiment:
Fig. 1 is a process chart of the present invention.Moisture behind the drying sludge is 2-15%, and ash content is 70~90%, (wherein contain sulphur (S), chlorine (Cl) element is 0.5~6%), and all the other are 5~18%.Lake and municipal sludge are salvaged, collected and drying, dried mud adds solid sulphur, chlorine-solidifying agent is prepared burden, the material for preparing enters melting furnace and carries out melting incinerating (harmless treatment), high-temperature flue gas behind melt-combustion enters secondary combustion chamber, after completing combustion, enter waste heat boiler and carry out waste heat recovery, the flue gas of discharging from waste heat boiler can carry out catalytic denitration after the cooling fast selectively through quench tower to be handled back (or according to the requirement of local environmental protection to fume emission, utilize additive method to carry out gas cleaning handle after) and discharges; After the flying dust that produces carries out harmless treatment, reclaim wherein valuable metal; Liquid slag is through shrend and sorting, and the iron in the slag (Fe), copper metals such as (Cu) are recycled by forming alloy; Remaining innoxious residue processes various construction material comprehensive utilizations according to the requirement of building occupancy.
Sulphur-fixing agent can be used calcium carbonate, calcium oxide, calcium hydroxide, di-iron trioxide, electroslag stone etc., and the weight ratio of sulfur content is 1.5~5 in addition and the mud, and chlorine-solidifying agent can be sodium carbonate or sodium acid carbonate, and the weight ratio of chlorinity is 1~2 in addition and the mud.The application number of the most handy the applicant's application of melting furnace is 00259909.0 combustion furnace, but thermal source electricity consumption, oil, combustion gas or the coal of melting furnace.Waste heat boiler can have economizer and air preheater.The flue gas of getting rid of from waste heat boiler is handled or is discharged the requirement of fume emission according to environmental protection again being quickly cooled within 2~4 seconds below 250 ℃, and innocent residue is made the paveio(u)r of road construction; Also can be equipped with cement or blast furnace ashes and pour into different shape piece brick, be directly used in the road pavement in pavement, park and the garden in cities and towns.
Advantage compared with prior art of the present invention: 1. pair various municipal sludges, the processing adaptability of lake sludge is strong; Moisture, composition to mud do not have strict demand.2. technological process is short, furnace bed index is high, and capital expenditure and trial run expense are lower.3. fire box temperature is higher than more than 1400 ℃; Flue dust and exhaust gas volumn are few; Dioxin emission almost approaches zero-emission far below discharging standards; Essentially no heavy metal pollution; Molten slag can regeneration, and useful metal is easy to regain.4. waste heat is easy to be recycled.5. that has realized mud subtracts appearanceization, innoxious and resource.
The composition of embodiment one 1. implementation condition sluge from Dianchi Lake:
Air-dried moisture: 2.85%; Dry basic ash content: 85.96% (wherein sulfur content is 4%, and chlorinity is 1.2%); Dry basic volatile matter: 10.27%; Dry basic fixed carbon: 0.92%; Air-dried basis low heat value: 1400kJ/kg; The primary air coefficient of excess: 0.82, the atmosphere in the melting furnace is reducing atmosphere; Auxiliary air coefficient of excess: 1.12; Auxiliary coal addition is a sludge quantity: 1.45 times; The CaO addition is that the weight ratio of sulfur content in the mud is 3.4; NaHCO
3The weight ratio of chlorinity is 1.5 in addition and the mud; 2. result of implementation melting incinerating temperature: 1472 ℃; Slag temperature: 1340 ℃; Melting furnace smokestack exit gas temperature: 1240 ℃; Metal recovery rate in the liquid slag is 95.4%; Be equipped with the square brick that 30% cement casting becomes 230 * 114 * 65mm.
The composition of embodiment 2 1. implementation condition municipal sludges (empty butt): air-dried moisture: 2.15%; Dry basic ash content: 83.80% (wherein sulphur accounts for 2.5%, and chlorine accounts for 3%); Dry basic volatile matter: 12.14% dry basic fixed carbon: 1.91%; Air-dried basis status calorific capacity: 3010kJ/kg; The primary air coefficient of excess: 0.95, the atmosphere in the melting furnace is reducing atmosphere; Auxiliary air coefficient of excess: 1.08; Auxiliary coal addition is a sludge quantity: 0.8 times; The CaO addition is that the weight ratio of sulfur content in the mud is 2.0; NaHCO
3Addition is that the weight ratio of chlorinity in the mud is 2; 2. result of implementation melting incinerating temperature: 1458 ℃; Liquid slag temperature: 1320 ℃; Melting furnace smokestack exit gas temperature: the metal recovery rate in 1214 ℃ of liquid slags is 95%; Be equipped with the square brick that 24% cement casting becomes 230 * 114 * 65mm.
Claims (3)
1. the technology of lake and the innoxious comprehensive utilization of municipal sludge, it is characterized in that: lake and municipal sludge are salvaged, collect, dried mud adds sulphur-fixing agent, chlorine-solidifying agent is prepared burden, the material for preparing enters melting furnace and carries out melting incinerating, flue gas behind the melting incinerating enters secondary combustion chamber, after completing combustion, enter waste heat boiler and carry out waste heat recovery, liquid slag is through shrend and sorting, iron wherein, copper metal form alloy and are used, and remaining innoxious residue is made construction material.
2. the technology of comprehensive utilization of mud according to claim 1, it is characterized in that: sulphur-fixing agent is a kind of in calcium carbonate, calcium oxide, calcium hydroxide, di-iron trioxide, the electroslag stone, and the weight ratio of sulfur content is 1.5~5 in the addition of described sulphur-fixing agent and the mud.
3. the technology of comprehensive utilization of mud according to claim 1 is characterized in that: chlorine-solidifying agent is a kind of in sodium acid carbonate, the sodium carbonate, and the weight ratio of chlorinity is 1~2 in the addition of described chlorine-solidifying agent and the mud.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN 01108478 CN1119209C (en) | 2001-05-28 | 2001-05-28 | Comprehensive innocuous utilization technique of lake and city sludge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN 01108478 CN1119209C (en) | 2001-05-28 | 2001-05-28 | Comprehensive innocuous utilization technique of lake and city sludge |
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CN1318435A CN1318435A (en) | 2001-10-24 |
CN1119209C true CN1119209C (en) | 2003-08-27 |
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CN 01108478 Expired - Fee Related CN1119209C (en) | 2001-05-28 | 2001-05-28 | Comprehensive innocuous utilization technique of lake and city sludge |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100374381C (en) * | 2006-06-29 | 2008-03-12 | 上海交通大学 | Method for processing organic chloride and heavy metal polluted bed mud |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105344698A (en) * | 2015-11-25 | 2016-02-24 | 上海绿澄环保科技有限公司 | Method for treating specific pollutants through high-temperature melting technology |
CN105642654A (en) * | 2016-01-19 | 2016-06-08 | 青岛理工大学 | Synchronization technology for recycling sludge and harmless chromium slag by using waste heat of blast furnace slag |
CN105728425B (en) * | 2016-01-19 | 2018-06-26 | 青岛理工大学 | Synchronization technology for recycling biomass and harmlessly treating chromium slag by using steel slag waste heat |
CN105728434B (en) * | 2016-02-29 | 2017-05-17 | 中南大学 | Resourceful treatment method for waste circuit board |
CN106167343A (en) * | 2016-08-31 | 2016-11-30 | 柳州市润广科技有限公司 | A kind of municipal sludge total system |
CN110306054B (en) * | 2018-03-20 | 2021-07-30 | 荆门格林循环电子废弃物处置有限公司 | Method for recovering valuable metals of waste circuit boards |
CN111336520B (en) * | 2020-02-03 | 2022-03-29 | 山东清博生态材料综合利用有限公司 | Treatment method and treatment device for pasty solid material in hazardous waste incineration disposal process |
-
2001
- 2001-05-28 CN CN 01108478 patent/CN1119209C/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100374381C (en) * | 2006-06-29 | 2008-03-12 | 上海交通大学 | Method for processing organic chloride and heavy metal polluted bed mud |
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Publication number | Publication date |
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CN1318435A (en) | 2001-10-24 |
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