CN103172245B - Method for quick pyrolysis treatment and in situ conversion product utilization of sludge - Google Patents
Method for quick pyrolysis treatment and in situ conversion product utilization of sludge Download PDFInfo
- Publication number
- CN103172245B CN103172245B CN201310093370.XA CN201310093370A CN103172245B CN 103172245 B CN103172245 B CN 103172245B CN 201310093370 A CN201310093370 A CN 201310093370A CN 103172245 B CN103172245 B CN 103172245B
- Authority
- CN
- China
- Prior art keywords
- sludge
- pyrolysis
- pyrolytic carbon
- gas
- mud
- 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.)
- Expired - Fee Related
Links
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 65
- 239000010802 sludge Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000012084 conversion product Substances 0.000 title claims abstract description 8
- 238000011065 in-situ storage Methods 0.000 title abstract description 4
- 239000002296 pyrolytic carbon Substances 0.000 claims abstract description 36
- 239000007789 gas Substances 0.000 claims abstract description 32
- 238000001035 drying Methods 0.000 claims abstract description 15
- 230000003213 activating effect Effects 0.000 claims abstract description 13
- 239000002912 waste gas Substances 0.000 claims abstract description 10
- 239000000047 product Substances 0.000 claims abstract description 9
- 239000002918 waste heat Substances 0.000 claims abstract description 6
- 239000002250 absorbent Substances 0.000 claims abstract description 4
- 230000002745 absorbent Effects 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000018044 dehydration Effects 0.000 claims description 7
- 238000006297 dehydration reaction Methods 0.000 claims description 7
- 239000003610 charcoal Substances 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims description 6
- 230000004913 activation Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 239000000446 fuel Substances 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000012159 carrier gas Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000002480 mineral oil Substances 0.000 claims description 3
- 235000010446 mineral oil Nutrition 0.000 claims description 3
- 238000007669 thermal treatment Methods 0.000 claims description 3
- 239000010801 sewage sludge Substances 0.000 claims description 2
- 239000010865 sewage Substances 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 3
- 238000004043 dyeing Methods 0.000 abstract description 2
- 239000010985 leather Substances 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 238000007670 refining Methods 0.000 abstract 1
- 238000013459 approach Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 229910001385 heavy metal Inorganic materials 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000002594 sorbent Substances 0.000 description 3
- 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 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 2
- 239000012075 bio-oil Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100001261 hazardous Toxicity 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000002688 persistence Effects 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000003900 soil pollution Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 150000001722 carbon compounds Chemical class 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000009919 sequestration Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 210000000952 spleen Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- 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
-
- 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
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a method for quick pyrolysis treatment and in situ conversion product utilization of sludge. The method comprises six steps of sludge dehydrating and drying, quick intermediate temperature sludge pyrolyzing, pyrolytic product separating, pyrolytic oil power generating and waste-heat utilizing, pyrolytic gas recycling and pyrolytic carbon activating and activated carbon absorbent refining of waste gases. The method is adopted to treat the sludge produced by urban sewage treatment plants and the industrial sludge produced by industries such as papermaking, leather, dyeing and finishing, the sludge can be obviously reduced, the pyrolytic conversion product of the sludge is utilized for the sludge reduction treatment and waste gas purification in situ, and links such as storage and transportation are dispensed; and the method is an intensive treatment mode and has the advantages of high energy recovery rate, small secondary sludge, high harmless degree, low operation cost, obvious environmental benefit and the like.
Description
Technical field
The present invention relates to the disposal and utilization method of the industrial sludge of the industry generations such as a kind of city domestic sewage mud that treatment plant produces and papermaking, leather, printing and dyeing.
Background technology
Along with the development of urbanization and attention and the reinforcement of water surrounding management, town sewage treatment scale and degree grow with each passing day.To the end of the year 2010, China's town sewage treatment scale reached for 12476 ten thousand stere/days.Urban wastewater treatment firm mud (abbreviation mud) is unavoidable by product in sewage treatment process, is mainly derived from the technique units such as primary sedimentation pond, secondary sedimentation basins.Every ten thousand m
3sewage will produce mud 5-10 ton (by water ratio 80%) after treatment, with this, estimate, current China produces sludge quantity every year over 2,200 ten thousand tons.
In mud, contain the nutritive elements such as the required nitrogen of a large amount of organism and crop growth, phosphorus, potassium, but also contain numerous kinds hazardous contaminant simultaneously, comprise the biological pollutants such as pathogenic bacterium, parasite (ovum), the heavy metals such as copper, zinc, chromium, mercury, and the persistence organic pollutant such as polychlorobiphenyl, dioxin, if can not get dealing carefully with, easily cause secondary pollution.
Therefore,, how safely lignin-sludge has become the important environmental problem ，Ye Shi sewage work of the common concern in the whole world and the difficult problem that municipal administration department faces economically.
At present, the processing of China's municipal sludge mainly adopts following three kinds of technological approaches:
Approach A: mechanical dehydration (water ratio 80% left and right) and stabilization treatment+refuse landfill landfill;
Approach B: mechanical dehydration and stabilization+also field utilizes;
Approach C: (or burning after mummification) processed+burned to mechanical dehydration.
Approach A is acknowledged as a kind of least continuable sludge treatment mode.Its unsustainable property main manifestations is: minimizing degree is low, only sloughs the water of 20% left and right; Landfill is disposed and need to be taken a large amount of soils, causes the loss of beneficiating ingredient in mud (N, P etc.) and energy simultaneously, again in many ways to carry in environment pollutent (as landfill gas with ooze drop liquid); Due to mud and domestic refuse nature difference larger, the introducing of mud in landfill yard, brings difficulty to landfill operation and landfill management.Therefore, many countries and regions have very cautiously adopted this kind of mode disposing sludge, member statess as many in European Union eliminate Sludge landfill disposal gradually, and (it is 14% that European Union's landfill in 2010 is disposed proportion, estimate that 2020 are about 7%), Environmental Protection Agency plans to close 80% sludge landfill in from now on 20 years.In view of the current national conditions of China, national < < urban wastewater treatment firm sludge treatment disposal technology standard > > is considered as Sludge landfill " a kind of cambic processing Disposal Measures in China's certain hour ".But along with the increasingly stringent of China's expanding economy and environmental protection requirement, we have reason to believe, this sludge treatment approach also will become history in China in the near future.
(as lime stabilization, composting etc.) after mechanical sludge dewatering, stabilization treatment are also utilized to (approach B) in field, can realize the partially recycled utilization to the nutrients resource such as nitrogen, phosphorus in mud, be the current main path that comprises numerous countries solution mud outlet of China.Yet this mode is also accompanied by soil and inputs biological pollutant, heavy metal and persistence organic pollutant, long-term mud goes back to field and very likely causes soil pollution, jeopardizes agricultural product quality and safety.Many developed countries and area also therefore to apply mud character and quantity, received the aspects such as land type and done strict demand and management and control.Consider current China soil pollution situation severe, and sludge creation amount increases the contradiction day by day reducing with the land area that is applicable to mud to dissolve increasingly, mud also field utilizes and will be subject to more strict control.
Approach C (sludge in-situ mechanical dehydration process+burn or mummification after burn) have the pathogenic bacterium that become extinct completely, sludge reduction thoroughly, and can partially recycled mud in the advantages such as energy, day by day coming into one's own in recent years, is the important substitute technology that solves low matter sludge (the particularly higher mud of hazardous and noxious substances content) outlet.But, because sludge incineration produces a large amount of toxic and harmful (comprising the carcinogenss such as dioxin), and effective removing of these gases and purification need a large amount of facilities to drop into and fund input, this mud mode of dissolving is faced with " operation cost is high and public acceptability is poor " two challenges greatly.Therefore, although technical suitable maturation and exist many advantages, sludge incineration technology to fail to realize large-scale industrialization application all the time.
Summary of the invention
The technical problem to be solved in the present invention is for existing sludge disposal technology above shortcomings, provides the original position of a kind of mud fast pyrolysis processes and conversion product to utilize method.
The technical scheme solving the problems of the technologies described above is: the original position of this mud fast pyrolysis processes and conversion product utilizes method to carry out as follows:
(1) sludge dehydrating and drying: mud, through mechanical dehydration, is sloughed after 20-30% water, then carries out mummification through sludge drying machine, making dewatered sludge water ratio is 5%-10%;
(2) the middle temperature fast pyrolysis processes of mud: dewatered sludge is sent in pyrolysis reactor, Heating temperature is 500-600 ℃, carry out anaerobic thermal treatment, control sewage sludge feed speed and flow rate of carrier gas, guarantee that mud and the residence time of pyrolysis devolatilization thing in reactor are respectively 10-40min and 1-5s;
(3) separation of pyrolysis product and collection: to mud, the heavy thermosetting of output after step (2) is processed is flowed mutually and carried out separated with weight hot phase stream, and the product after separation is collected, the heavy thermosetting of step (2) output is flowed mutually (being mainly heavy pyrolytic carbon) and is utilized self gravitation by naturally flowing into pyrolytic carbon activating apparatus through tilting pipeline; The hot phase stream of step (2) output first passes into cyclonic separator, isolate trickle granular lightweight pyrolytic carbon wherein, be passed into circulating water treater, the condensable property gas of isolating in hot phase stream is pyrolysis oil and can not condensing gas is pyrolysis gas again;
(4) generating of pyrolysis oil and UTILIZATION OF VESIDUAL HEAT IN: the separating obtained pyrolysis oil of step (3) is mixed in 1:1-3 ratio with mineral oil, combustion oil as cogeneration units, the electricity consumption of the electric energy that cogeneration units produces for supplying all relative unit of the present invention, the waste heat that cogeneration units produces is for sludge heat drying, and unnecessary electric energy is connected to the grid;
(5) activation of pyrolysis gas recycle and pyrolytic carbon: the heavy pyrolytic carbon being isolated through step (3) and lightweight pyrolytic carbon are come together in pyrolytic carbon activating apparatus, then pyrolysis gas step (3) being isolated imports in pyrolytic carbon activating apparatus pyrolytic carbon is activated, make gac, the gas again pyrolytic carbon activating apparatus being discharged imports in the pyrolysis reactor of step (2), and unnecessary pyrolysis gas discharges after the waste-gas cleaning of next step;
(6) the charcoal absorption purifying treatment of waste gas: pass into absorbent charcoal adsorber after the unnecessary pyrolysis gas after step (1) sludge drying and step (5) use is collected, carry out purifying treatment, gac used makes from step (5).
The invention has the beneficial effects as follows:
1, energy recovery and utilising efficiency are high.The present invention is optimized pyrolyzing sludge technique, the most of energy in mud can be transferred in the pyrolysis oil product of being convenient to storage and using, and energy conversion efficiency can be up to 60%; The present invention be take pyrolysis oil and is generated electricity as fuel, and generating waste-heat is processed for sludge heat drying, has improved the energy utilization efficiency of pyrolysis oil; In addition, the present invention utilizes the waste heat in pyrolytic carbon to carry out preheating to pyrolysis carrier gas (namely part cycling hot is vented one's spleen), can save pyrolysis operation institute energy requirement;
2, secondary pollution is little, and innoxious degree is high.By the middle temperature fast pyrolysis processes after process optimization, most heavy metals in mud will be trapped in pyrolysis solid product pyrolytic carbon, and exist with stable form, reduced the environmental hazard risk that its follow-up non-fuelization is utilized (as sorbent material, Covering Material of Refuse Landfill etc.).On the other hand, owing to containing hardly heavy metal in pyrolysis gas, thereby without pyrolysis gas is carried out to heavy metal removing processing;
3, operation cost is low.During the present invention adopts, warm fast pyrolysis technology changes into bio oil by mud, for the operations such as sludge heat drying processing and pyrolysis provide energy source, can significantly reduce energy consumption and operating cost.On the other hand, mud is after heat drying processing and pyrolysis processing, and volume reduces greatly, and final pyrolytic carbon volume is 10% left and right of former dewatered sludge (in water ratio 80%) volume, can obviously save the expenses such as follow-up storage, transportation.In addition, it is sorbent material that the present invention adopts the pyrolytic carbon through pyrolysis gas activation treatment, and the waste gas producing in process operation process is carried out to purifying treatment, has reduced waste gas pollution control and treatment cost;
4, environmental benefit is obvious.The exhaustion of earth mineral fuel resource and Greenhouse effect are two hang-ups that current social faces, and develop and use the renewable energy sources such as bioenergy and advance carbon emission reduction work to be acknowledged as the fundamental way that solves this two hang-up.The present invention changes into bio oil by mud through pyrolysis process, as the required energy source of sludge treatment, can reduce the dependence (also having reduced thus carbon emission) to mineral fuel.In addition, the gac that system of the present invention produces (being the pyrolytic carbon after activated processing) contains higher carbon species, and exist with stable form, can be used as Covering Material of Refuse Landfill (or sorbent material of waste water, off gas treatment), reach the object of carbon sequestration simultaneously.
Embodiment
The present invention is illustrated below in conjunction with embodiment:
The original position of this mud fast pyrolysis processes and conversion product utilizes method to carry out as follows:
(1) sludge dewatering and mummification: mud, through mechanical dehydration, is sloughed after 20-30% water, more further dewaters through sludge drying machine; For guaranteeing that the pyrolysis oil that pyrolyzing sludge machining produces has higher quality and calorific value, mud is carried out to abundant mummification, its solid holdup is reached between 90-95%;
(2) the middle temperature fast pyrolysis processes of mud: dewatered sludge is sent in pyrolysis reactor and is heat-treated, make mud be converted into pyrolysis oil, pyrolytic carbon and pyrolysis gas; Volatilization for the contained heavy metal of mud in raising pyrolysis oil output and deduction and exemption pyrolytic process, in employing, warm rapid pyrolysis method carries out anaerobic thermal treatment to mud, main control parameters is: Heating temperature is 500-600 ℃, the treatment time of mud in pyrolysis reactor is 5-30min, and volatile matter residence time in reactor that pyrolyzing sludge produces is 1-5s;
(3) separation of pyrolysis product and collection: to mud, the heavy thermosetting of output after step (2) is processed is flowed mutually and carried out separated with weight hot phase stream, and the product after separation is collected, the heavy thermosetting of step (2) output mutually fluently with self gravitation by naturally flowing into pyrolytic carbon activating apparatus through tilting pipeline; The hot phase stream of step (2) output first passes into cyclonic separator, isolate trickle granular lightweight pyrolytic carbon wherein, be passed into circulating water treater, the condensable property gas of isolating in hot phase stream is pyrolysis oil and can not condensing gas is pyrolysis gas again;
(4) generating of pyrolysis oil and UTILIZATION OF VESIDUAL HEAT IN: the separating obtained pyrolysis oil of step (3) is mixed in 1:1-3 ratio with mineral oil, combustion oil as cogeneration units, the electricity consumption of the electric energy that cogeneration units produces for supplying all relative unit of the present invention, the waste heat that cogeneration units produces is for sludge heat drying, and unnecessary electric energy is connected to the grid;
(5) activation of pyrolysis gas recycle and pyrolytic carbon: the heavy pyrolytic carbon being isolated through step (3) and lightweight pyrolytic carbon are come together in pyrolytic carbon activating apparatus, then pyrolysis gas step (3) being isolated imports in pyrolytic carbon activating apparatus pyrolytic carbon is activated, make gac, the gas again pyrolytic carbon activating apparatus being discharged imports in the pyrolysis reactor of step (2), and unnecessary pyrolysis gas discharges after the waste-gas cleaning of next step;
(6) the charcoal absorption purifying treatment of waste gas: pass into absorbent charcoal adsorber after the unnecessary pyrolysis gas after step (1) sludge drying and step (5) use is collected, carry out purifying treatment, gac used makes from step (5).
It should be noted that the equipment that each link of the present invention adopts all can obtain by commercially available or net purchase.
Claims (1)
1. the original position of mud fast pyrolysis processes and conversion product is utilized a method, it is characterized in that carrying out as follows:
(1) sludge dehydrating and drying: mud, through mechanical dehydration, is sloughed after 20-30% water, then carries out mummification through sludge drying machine, making dewatered sludge water ratio is 5%-10%;
(2) the middle temperature fast pyrolysis processes of mud: dewatered sludge is sent in pyrolysis reactor, Heating temperature is 500-600 ℃, carry out anaerobic thermal treatment, control sewage sludge feed speed and flow rate of carrier gas, guarantee that mud and the residence time of pyrolysis devolatilization thing in reactor are respectively 10-40min and 1-5s;
(3) separation of pyrolysis product and collection: to mud, the heavy thermosetting of output after step (2) is processed is flowed mutually and carried out separated with lightweight hot phase stream, and the product after separation is collected, it is mainly heavy pyrolytic carbon that the heavy thermosetting of step (2) output is flowed mutually, utilizes self gravitation by naturally flowing into pyrolytic carbon activating apparatus through tilting pipeline; The hot phase stream of step (2) output is first passed into cyclonic separator, isolate trickle granular lightweight pyrolytic carbon wherein, be passed into circulating water treater, the condensable property gas of isolating in hot phase stream is pyrolysis oil and can not condensing gas is pyrolysis gas again;
(4) generating of pyrolysis oil and UTILIZATION OF VESIDUAL HEAT IN: the separating obtained pyrolysis oil of step (3) is mixed in 1:1-3 ratio with mineral oil, oil fuel as cogeneration units, the electricity consumption of the electric energy that cogeneration units produces for supplying all relative unit of the present invention, the waste heat that cogeneration units produces is for sludge heat drying, and unnecessary electric energy is connected to the grid;
(5) activation of pyrolysis gas recycle and pyrolytic carbon: the heavy pyrolytic carbon being isolated through step (3) and lightweight pyrolytic carbon are come together in pyrolytic carbon activating apparatus, then pyrolysis gas step (3) being isolated imports in pyrolytic carbon activating apparatus pyrolytic carbon is activated, make gac, the gas again pyrolytic carbon activating apparatus being discharged imports in the pyrolysis reactor of step (2), and unnecessary pyrolysis gas discharges after the waste-gas cleaning of next step;
(6) the charcoal absorption purifying treatment of waste gas: pass into absorbent charcoal adsorber after the unnecessary pyrolysis gas after step (1) sludge drying and step (5) use is collected, carry out purifying treatment, gac used makes from step (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310093370.XA CN103172245B (en) | 2013-03-21 | 2013-03-21 | Method for quick pyrolysis treatment and in situ conversion product utilization of sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310093370.XA CN103172245B (en) | 2013-03-21 | 2013-03-21 | Method for quick pyrolysis treatment and in situ conversion product utilization of sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103172245A CN103172245A (en) | 2013-06-26 |
| CN103172245B true CN103172245B (en) | 2014-01-29 |
Family
ID=48632526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310093370.XA Expired - Fee Related CN103172245B (en) | 2013-03-21 | 2013-03-21 | Method for quick pyrolysis treatment and in situ conversion product utilization of sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103172245B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663896A (en) * | 2013-11-12 | 2014-03-26 | 同济大学 | Method and device for stabilizing heavy metal through pyrolysis of sludge |
| CN103725304B (en) * | 2014-01-23 | 2017-01-04 | 杭州互惠环保科技有限公司 | Sludge and crop straw co-treatment method based on rapid pyrolysis |
| CN103922553B (en) * | 2014-04-29 | 2015-11-18 | 章琳茂 | A kind of method of raw materials oil from mud |
| CN104671628B (en) * | 2015-02-09 | 2017-09-19 | 广东金泥华牛科技有限公司 | A kind of method of utilization solar energy pyrolysis carbonization technical finesse sludge |
| CN105601075B (en) * | 2016-03-25 | 2018-03-27 | 刘晓静 | A kind of process and its device of pyrolyzing sludge carbonization treatment |
| CN106007295A (en) * | 2016-07-22 | 2016-10-12 | 浙江继琴水利科技有限公司 | System and process for producing carbon mud by anaerobic cracking of sludge |
| CN106348561A (en) * | 2016-09-06 | 2017-01-25 | 北京化工大学 | Method of recycling impregnated sludge carbon to catalytically gasify and recycling sludge carbon for secondary conversion of tar |
| CN107755407B (en) * | 2017-08-09 | 2020-06-16 | 北京国电富通科技发展有限责任公司 | Harmless recycling treatment device and method for organic hazardous wastes |
| CN109534846A (en) * | 2018-12-27 | 2019-03-29 | 永清环保股份有限公司 | The disposal of resources method and haydite of sludge and agriculture and forestry organic waste material |
| CN110092557A (en) * | 2019-06-12 | 2019-08-06 | 大连大学 | A kind of recycling sludge utilizes processing system and method |
| CN110759627A (en) * | 2019-11-26 | 2020-02-07 | 山东金孚环境工程有限公司 | Sludge indirect heat exchange evaporation dehydration coupling pyrolysis carbonization method and system |
| CN112898787A (en) * | 2021-01-25 | 2021-06-04 | 重庆交通大学 | Sludge biological asphalt and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006194232A (en) * | 2004-12-16 | 2006-07-27 | Jipangu Energy:Kk | Processing and effectively using method and effectively using system of raw waste |
| JP2006289340A (en) * | 2005-03-14 | 2006-10-26 | Haruo Matsumoto | Anaerobic pyrolysis of solid waste, and activation apparatus |
| CN101463261B (en) * | 2009-01-09 | 2012-07-04 | 北京博奇电力科技有限公司 | Integrated system and method for producing oil from sludge and refuse incineration |
| CN101818080B (en) * | 2010-03-23 | 2013-03-13 | 武汉凯迪工程技术研究总院有限公司 | Process and system for manufacturing synthesis gas from biomass by pyrolysis |
| CN101845311B (en) * | 2010-04-29 | 2013-06-05 | 江苏中容电气有限公司 | Method for pyrolyzing municipal sludge and preparing biological oil and active carbon simultaneously |
| CN102633419A (en) * | 2012-05-07 | 2012-08-15 | 浙江利保环境工程有限公司 | Sludge pyrolysis treatment process by taking waste plastic as supplementary energy |
-
2013
- 2013-03-21 CN CN201310093370.XA patent/CN103172245B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103172245A (en) | 2013-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103172245B (en) | Method for quick pyrolysis treatment and in situ conversion product utilization of sludge | |
| CN103224315B (en) | Sludge comprehensive treatment and conversion product recycle method | |
| RU2741936C1 (en) | Method and device for co-combustion of wastes and semi-dry waste sludge | |
| Bianchini et al. | Sewage sludge drying process integration with a waste-to-energy power plant | |
| CN102381820B (en) | Sludge treatment process based on hydrothermal modification technology | |
| CN112159063A (en) | Sludge pyrolysis safe resource utilization process | |
| CN103755124A (en) | Sludge treatment method based on hydrothermal carbonization | |
| CN103723899B (en) | Sludge comprehensive treatment method based on anaerobic digestion and hydrothermal carbonization | |
| CN105542808A (en) | All-closed zero-emission household refuse energy regeneration and comprehensive utilization production process | |
| CN108840544B (en) | Industrial sludge recycling treatment method | |
| CN103722002A (en) | Domestic waste comprehensive treatment method based on anaerobic digestion and hydrothermal carbonization | |
| CN102765866B (en) | Method for recycling urban sludge | |
| CN103725304A (en) | Sludge-crop straw joint disposal method based on fast pyrolysis | |
| CN102432151A (en) | Sludge recycling technique | |
| CN202297333U (en) | Dehydration drying low-temperature pyrolysis sludge treatment device | |
| WO2013051003A1 (en) | A self-sustainable integrated solid and liquid waste management, treatment, and energy generation system and method | |
| CN108728140B (en) | Organic hazardous waste low-temperature pyrolysis power generation system | |
| Traven | Sustainable energy generation from municipal solid waste: A brief overview of existing technologies | |
| Zhou et al. | Enrichment characteristics and environmental risk assessment of heavy metals in municipal sludge pyrolysis biochar | |
| CN101829671A (en) | Clean energy utilization method for municipal solid wastes | |
| CN205347174U (en) | Utilize plus sludge drying of living beings and processing apparatus that carbomorphism combined together | |
| CN103242929A (en) | Low calorific value blind coal prepared from sludge of domestic sewage treatment plant, and production technology and catalyst thereof | |
| CN213506535U (en) | Thermal power plant and municipal sewage treatment plant pollutant coprocessing's circular economy system | |
| CN105481192B (en) | A kind of dyeing and printing sewage handles recovery method | |
| CN209363255U (en) | A kind of solid-state hazardous waste processing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HANGZHOU HUHUI ENVIRONMENTAL PROTECTION TECHNOLOGY Free format text: FORMER OWNER: CAO YUCHENG Effective date: 20140507 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 311300 HANGZHOU, ZHEJIANG PROVINCE TO: 310020 HANGZHOU, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140507 Address after: Hangzhou City, Zhejiang province 310020 Jianggan District Qianchao Road No. 369 3 floor Patentee after: HANGZHOU HUHUI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: Jincheng Street Ling'an city Hangzhou city Zhejiang province 311300 building environment garden 105-202 Patentee before: Cao Yucheng |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |