CN105314807A - Sludge disposal and utilization method based on cyclone drying and coupling pyrolysis technology - Google Patents
Sludge disposal and utilization method based on cyclone drying and coupling pyrolysis technology Download PDFInfo
- Publication number
- CN105314807A CN105314807A CN201510090406.8A CN201510090406A CN105314807A CN 105314807 A CN105314807 A CN 105314807A CN 201510090406 A CN201510090406 A CN 201510090406A CN 105314807 A CN105314807 A CN 105314807A
- Authority
- CN
- China
- Prior art keywords
- sludge
- cyclone
- mud
- pyrolysis
- drying
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a sludge disposal and utilization method based on the cyclone drying and coupling pyrolysis technology. An activating agent is added before sludge is dried, compared with the traditional mode that the activating agent is added after the sludge is dried, energy consumption is reduced, cost is reduced, the sludge and the activating agent are fully mixed in the cyclone drying process, the sludge is completely smashed, and therefore the quality of sludge-based activated carbon is greatly improved. In addition, gas with energy and oil with energy generated in the sludge pyrolysis process are used for drying the sludge through a cyclone drier, the energy is reasonably utilized, and pollution is reduced. In consideration of the limited thought about domestic sludge treatment and disposal at present, the cyclone drying technology and the pyrolysis carbon making technology are well combined, the thought about sludge treatment and disposal is further expanded, and the economical and effective treatment method is provided.
Description
Technical field
The invention belongs to field of resource utilization of sludge.Relate to a kind of sludge disposal based on cyclone drying coupling pyrolytic technique and Application way.
Background technology
According to statistics, mud (water ratio 80%) output in the whole nation in 2015 is about 4,000 ten thousand tons/year.If the not treated any discharge of these mud, not only easy serious pollution is caused to surrounding enviroment, also can cause the waste of the useful energy in mud.
The traditional method of disposal of mud mainly comprises sanitary landfill, burning and Land_use change.Sanitary landfill has that process capacity is large, less investment, instant effect, technology maturation, method is simple, easy, the advantages such as strong adaptability, but existence and stability is poor, land occupation resource, resource utilization rate is low, have the fixing length of service, the percolate of generation and gas are dealt with improperly and can be produced secondary pollution, and cost such as to increase year by year at the shortcoming; It is little that burning has occupation of land, subtracts appearance effective, realize the advantages such as zero release, but it is large to there is investment, and operation and maintenance cost is high, contaminate environment such as generation flying dust, flue gas etc., the shortcomings such as highly toxic substance such as generation dioxin; Land_use change not only energy consumption is low, can also recycle plant nutrients a large amount of in mud, but requires high to sewage sludge quality, and the objectionable impuritiess such as the heavy metal in mud limit it and use.
Water ratio in view of mud high (can up to more than 99%), all will carry out certain drying and other treatment before to sludge disposal.Sludge drying technique mainly contains heat drying, solar energy desiccation, microwave heating mummification, ultrasonic wave mummification and heat pump mummification etc.It is little that solar energy desiccation has energy consumption, and operational and administrative expenses is low, meets the advantages such as the requirement of Sustainable development, but floor space is large, treatment effect is subject to the shortcoming such as weather and seasonal constraint; Microwave heating, ultrasonic wave mummification have time short, the advantage such as drying rate is large, but equipment and running cost higher; Heat pump mummification has the advantages such as floor space is little, working cost is low, energy-conserving and environment-protective, but there is the shortcomings such as technique is more complicated.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of method of novel specific resistance to filtration is provided, cyclone drying technology and pyrolysis charcoal processing combine with technique are got up, has expanded the thinking of specific resistance to filtration further, provide a kind of cost-effective treatment process.
The present invention is a kind of sludge disposal based on cyclone drying coupling pyrolytic technique and Application way, is undertaken by following step:
Step one, activation: in wet mud, add carbonaceous additive, after mixing, add activator, stir, flood 24 ~ 48h;
Step 2, cyclone drying: by the mud mixture after activation through cyclone dryer mummification dehydration, water ratio is down to 10% ~ 20%;
Step 3, pyrolysis: dried mud is placed in pyrolysis oven pyrolysis, obtains particulate matter, oil is gentle;
Step 4, separation and washing: oily substance step 3 obtained and particulate separation are also collected, and by particulate matter repetitive scrubbing, are sludge-based activated carbon after drying.
Wet moisture percentage in sewage sludge is 40% ~ 90%.
Carbonaceous additive is at least the one in agricultural crop straw, farm crop shell, wood chip, and its addition is 5% ~ 20% of dewatered sludge quality;
Activator is at least ZnCl
2, H
3pO
4, one in KOH, its addition is 50% ~ 150% of dewatered sludge quality, and activator adds and wet type can be adopted to add add with dry type, and adds with dry type and be advisable.
Activator adds before mud enters cyclone drying.
Pyrolysis step is with the indifferent gas such as nitrogen, helium for shielding gas, and temperature rise rate is 10 ~ 20 DEG C/min, is warmed up to 500 DEG C ~ 800 DEG C, keeps 1 ~ 3h.
The gas reuse with amount of heat produced in pyrolysis oven to the cyclone drying unit of leading portion, for the heating of mud in cyclone drying unit.
Activator recoverable after pyrolyzing sludge.
Prior art is compared, and the invention has the beneficial effects as follows:
1, be that gac prepared by raw material with mud, both source and the Cost Problems of gac raw materials had been solved, achieve again the recycling of mud, sludge-based activated carbon is used further to the process of waste gas, waste water etc. simultaneously, achieving the double effects of mud " turn waste into wealth, the treatment of wastes with processes of wastes against one another ", is a kind of energy-conserving and environment-protective technology.
2, before mud cyclone drying, activator is added, decrease energy consumption with adding after traditional sludge drying compared with activator, saved cost, in the process of cyclone drying, made mud and activator fully mix simultaneously, sludge crushing is more complete, and this will improve the quality of sludge-based activated carbon greatly.
3, the G&O with energy produced in pyrolyzing sludge process will be used for sludge-drying, and both Appropriate application energy, additionally reduced pollution.
4, not only floor space is little, technical process and reaction conditions simple for the method, and running cost is lower, can also suppress the generation of dioxin, curing heavy metal, reclaims renewable energy source.
Accompanying drawing explanation
Fig. 1 is provided by the invention a kind of based on the cyclone drying coupling sludge disposal of pyrolytic technique and the schematic flow sheet of Application way.
Embodiment
The present invention's more detailed description content is as follows:
Inventive principle: the recycling sludge produced after sewage disposal utilizes by the present invention, prepares sludge-based activated carbon.How the drying of mud and pyrolysis charcoal processing technique are integrated by the present invention, establish a set of resource-conserving, the specific resistance to filtration method of high efficiency of energy type.Activator is added before drying sludge, sludge-based activated carbon is prepared after mud drying after activation, activation, the gas with amount of heat simultaneously produced in reactivation process enters cyclone dryer sludge-drying through the recycle system, activator is recycled by method for washing, and the sludge-based activated carbon of preparation can be used for process waste gas and waste water.
Method steps:
For realizing the object of foregoing invention, a kind of sludge disposal based on cyclone drying coupling pyrolytic technique of the present invention and Application way, undertaken by following step:
Step one, activation: the carbonaceous additive (agricultural crop straw, farm crop shell, wood chip etc.) adding 5% ~ 20% of dewatered sludge quality in wet mud (water ratio 40% ~ 90%), adds the activator powder (ZnCl of 50% ~ 150% of dewatered sludge quality after mixing
2, H
3pO
4, KOH etc.), to stir, dipping 24 ~ 48h;
Step 2, cyclone drying: by the mud mixture after activation through cyclone dryer mummification dehydration, water ratio is down to 10% ~ 20%;
Step 3, pyrolysis: dried mud is placed in pyrolysis oven pyrolysis, its processing condition are: with the indifferent gas such as nitrogen, helium for shielding gas, the temperature rise rate of pyrolysis oven is 10 ~ 20 DEG C/min, heat up 500 DEG C ~ 800 DEG C, keep 1 ~ 3h, obtain particulate matter, oil is gentle, the gas reuse with amount of heat wherein produced to the cyclone drying unit of leading portion, for the heating of mud in cyclone drying unit;
Step 4, separation and washing: oily substance step 3 obtained and particulate separation are also collected, and by particulate matter repetitive scrubbing, be sludge-based activated carbon after drying, the activator reuse in washings is to the activation unit of leading portion.
Sludge-based activated carbon prepared by the present invention can be used for processing in Industrial processes the organic waste water produced, heavy metal wastewater thereby and organic industry waste gas etc., simultaneously also can with other processing mode conbined usage.
The present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; those skilled in the art is under enlightenment of the present invention and when not departing from present inventive concept, and can make a lot of distortion, these all belong to protection scope of the present invention.
Claims (8)
1., based on sludge disposal and the Application way of cyclone drying coupling pyrolytic technique, it is characterized in that comprising the steps:
Step one, activation: in wet mud, add carbonaceous additive, after mixing, add activator, stir, flood 24 ~ 48h;
Step 2, cyclone drying: by the mud after activation through cyclone dryer mummification dehydration, water ratio is down to 10% ~ 20%;
Step 3, pyrolysis: dried mud is placed in pyrolysis oven pyrolysis, obtains particulate matter, oil is gentle;
Step 4, separation and washing: oily substance step 3 obtained and particulate separation are also collected, and by particulate matter repetitive scrubbing, are sludge-based activated carbon after drying.
2. method according to claim 1, is characterized in that wet moisture percentage in sewage sludge is 40% ~ 90%.
3. method according to claim 1, it is characterized in that carbonaceous additive is at least the one in agricultural crop straw, farm crop shell, wood chip, its addition is 5% ~ 20% of dewatered sludge quality.
4. method according to claim 1, is characterized in that activator is at least ZnCl
2, H
3pO
4, one in KOH, its addition is 50% ~ 150% of dewatered sludge quality, and activator adds and wet type can be adopted to add add with dry type, and adds with dry type and be advisable.
5. method according to claim 1, is characterized in that activator adds before mud enters cyclone drying.
6. method according to claim 1, it is characterized in that pyrolysis step in step 3 with the indifferent gas such as nitrogen, helium for shielding gas, temperature rise rate is 10 ~ 20 DEG C/min, is warmed up to 500 DEG C ~ 800 DEG C, keeps 1 ~ 3h.
7. method according to claim 1, the gas reuse with amount of heat that it is characterized in that producing in pyrolysis oven to the cyclone drying unit of leading portion, for the heating of mud in cyclone drying unit.
8. method according to claim 1, is characterized in that the activator recoverable after pyrolyzing sludge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510090406.8A CN105314807A (en) | 2015-02-28 | 2015-02-28 | Sludge disposal and utilization method based on cyclone drying and coupling pyrolysis technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510090406.8A CN105314807A (en) | 2015-02-28 | 2015-02-28 | Sludge disposal and utilization method based on cyclone drying and coupling pyrolysis technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105314807A true CN105314807A (en) | 2016-02-10 |
Family
ID=55243240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510090406.8A Pending CN105314807A (en) | 2015-02-28 | 2015-02-28 | Sludge disposal and utilization method based on cyclone drying and coupling pyrolysis technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105314807A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629714A (en) * | 2016-12-08 | 2017-05-10 | 北京神雾环境能源科技集团股份有限公司 | System and method for preparing activated carbon by combination of pyrolyzing furnace and rake furnace |
| CN107265586A (en) * | 2017-07-05 | 2017-10-20 | 合肥天翔环境工程有限公司 | Sewage sludge processing equipment |
| CN108033657A (en) * | 2017-12-18 | 2018-05-15 | 北京城市排水集团有限责任公司 | A kind of method for improving pyrolyzing sludge carbonization absorption property |
| CN108178477A (en) * | 2017-12-11 | 2018-06-19 | 北京拓首能源科技股份有限公司 | A kind of Sludge in Oilfields recovery and processing system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644495A (en) * | 2004-12-14 | 2005-07-27 | 南开大学 | Method for preparing active carbon from urban sewage treatment plant mud |
| CN101985355A (en) * | 2010-12-06 | 2011-03-16 | 东南大学 | Method and device for preparing activated carbon by using sludge |
| CN102134072A (en) * | 2011-03-04 | 2011-07-27 | 南京工业大学 | Process for preparing activated carbon by utilizing residual sludge from sewage treatment in pesticide chemistry industry |
| CN102530941A (en) * | 2011-12-16 | 2012-07-04 | 北京工业大学 | Sludge-based activated carbon and preparation method thereof |
| CN102745879A (en) * | 2012-07-05 | 2012-10-24 | 华中科技大学 | Sludge-based adsorbent used for desulfurization and demercuration of flue-gas and preparation method thereof |
| CN103725304A (en) * | 2014-01-23 | 2014-04-16 | 杭州互惠环保科技有限公司 | Sludge-crop straw joint disposal method based on fast pyrolysis |
-
2015
- 2015-02-28 CN CN201510090406.8A patent/CN105314807A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644495A (en) * | 2004-12-14 | 2005-07-27 | 南开大学 | Method for preparing active carbon from urban sewage treatment plant mud |
| CN101985355A (en) * | 2010-12-06 | 2011-03-16 | 东南大学 | Method and device for preparing activated carbon by using sludge |
| CN102134072A (en) * | 2011-03-04 | 2011-07-27 | 南京工业大学 | Process for preparing activated carbon by utilizing residual sludge from sewage treatment in pesticide chemistry industry |
| CN102530941A (en) * | 2011-12-16 | 2012-07-04 | 北京工业大学 | Sludge-based activated carbon and preparation method thereof |
| CN102745879A (en) * | 2012-07-05 | 2012-10-24 | 华中科技大学 | Sludge-based adsorbent used for desulfurization and demercuration of flue-gas and preparation method thereof |
| CN103725304A (en) * | 2014-01-23 | 2014-04-16 | 杭州互惠环保科技有限公司 | Sludge-crop straw joint disposal method based on fast pyrolysis |
Non-Patent Citations (2)
| Title |
|---|
| 姬爱民等: "《污泥热处理》", 31 August 2014, 冶金工业出版社 * |
| 李登新等: "《固体废物处理与处置》", 31 July 2014, 中国环境出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629714A (en) * | 2016-12-08 | 2017-05-10 | 北京神雾环境能源科技集团股份有限公司 | System and method for preparing activated carbon by combination of pyrolyzing furnace and rake furnace |
| CN107265586A (en) * | 2017-07-05 | 2017-10-20 | 合肥天翔环境工程有限公司 | Sewage sludge processing equipment |
| CN108178477A (en) * | 2017-12-11 | 2018-06-19 | 北京拓首能源科技股份有限公司 | A kind of Sludge in Oilfields recovery and processing system |
| CN108033657A (en) * | 2017-12-18 | 2018-05-15 | 北京城市排水集团有限责任公司 | A kind of method for improving pyrolyzing sludge carbonization absorption property |
| CN108033657B (en) * | 2017-12-18 | 2020-04-24 | 北京城市排水集团有限责任公司 | Method for improving adsorption performance of pyrolysis and carbonization of sludge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110240386B (en) | Straw and sludge cooperative treatment device and method | |
| CN101654247B (en) | Shaddock peel activated carbon preparation method | |
| CN101993181B (en) | Method for dehydration and recycling of continuous dyeing sludge | |
| CN102765866B (en) | Method for recycling urban sludge | |
| CN102161562B (en) | Process for treating excess sludge by utilizing fly ash | |
| CN108358421B (en) | Method for simultaneously removing water from sludge and preparing solid fuel and product | |
| CN103951153A (en) | Method and system for preparing carbon adsorbent material by mixing waste plastics with sludge | |
| CN210419701U (en) | Straw and sludge coprocessing device | |
| CN106747596A (en) | A kind of method that utilization mineralized waste, sludge and building castoff prepare haydite | |
| CN105314807A (en) | Sludge disposal and utilization method based on cyclone drying and coupling pyrolysis technology | |
| CN103964661A (en) | System and method for gradient dewatering drying of sludge | |
| CN100417708C (en) | Method for preparing biodiesel from sludge by microwave radiation | |
| CN104673424A (en) | Method for preparing novel energy material | |
| CN105733734A (en) | Method and device for preparing fuel by means of mixing coke powder with sludge from sewage plants | |
| CN109485228A (en) | A kind of synergic processing process that sludge is combined with rubbish | |
| CN109181807A (en) | A kind of preparation method of sewage sludge biomass environment-friendly fuel | |
| CN101746940A (en) | Dewatering sludge alkaline type semi-desiccation processing method of sewage treatment plants | |
| CN106865947B (en) | Sludge drying treatment method | |
| CN108862992A (en) | A kind of method of the protease joint thermal pressure to sludge dewatering | |
| CN102755983A (en) | Comprehensive treatment system and method for household wastes | |
| CN203976600U (en) | A kind of city disposal of oily sludge system | |
| CN103739179A (en) | Sludge pre-treatment method | |
| CN106430867B (en) | A kind of printing and dyeing sludge microwave and photo catalysis integral treatment method | |
| CN204529622U (en) | A kind of sludge treating system | |
| CN203960020U (en) | A kind of system of utilizing the dry municipal sludge of surplus heat of power plant coupled solar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 211100 Qinhuai Road, Jiangning economic and Technological Development Zone, Nanjing, Jiangsu Province, No. 20 Applicant after: Nanjing Wondux Environmental Protection Technology Co., Ltd. Address before: 211100 Qinhuai Road, Jiangning economic and Technological Development Zone, Nanjing, Jiangsu Province, No. 20 Applicant before: Nanjing Wanders Environmental Protection Science & Technology Co., Ltd. |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160210 |