CN100535090C - Method for one-step producing biomassfuel, biological haydite and active carbon using high wet mixed city garbage as raw material - Google Patents
Method for one-step producing biomassfuel, biological haydite and active carbon using high wet mixed city garbage as raw material Download PDFInfo
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- 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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- 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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- 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
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The process of producing biomass fuel, biological haydite and active carbon with city garbage with high water content as raw material includes the following steps: sorting and crushing garbage, drum screening, preparing biomass fuel, biologically fermenting and dewatering, preparing biological haydite and active carbon, etc. The present invention makes it possible to make best utilization of garbage resource.
Description
Technical field
The present invention relates to the treatment of urban garbage technical field, is to separate once from the high humidity mixed city garbage and prepare biomass fuel, biological ceramic particle and process of active carbon specifically.
Background technology
In traditional trash processing way, sanitary landfill method: because of floor space is big, the processing costs height waste a large amount of land resourcess, and applied value reduces gradually.Composting process: because of organic utilization is incomplete, fertilizer composition complexity, factor such as minimizing is less will progressively be eliminated.The burning of rubbish will become the main flow of domestic waste harmless treatment because of its many distinct advantages that have.Mainly show: 1, rubbish is after burning disposal, and the pathogenic agent in the rubbish is utterly destroyed, and obnoxious flavour that produces in the combustion processes and flue dust reach emission request after treatment, innoxious degree height.2, but rubbish loss of weight 80% after burning subtracts and holds more than 90%, and decrement is effective, saves a large amount of soils.Tail gas, heat energy can fully reclaim and utilize.
But be subjected to that the output of component of refuse restriction, incinerator and heat and power system heat energy is low with the rate of recovery, working cost is big, cost of electricity-generating is high, the influence of tail vapour and factors such as the slag emission environmental protection index is poor, treatment cost height simultaneously, applying of this technology is comparatively difficult.
Do not obtain the former of good effect in many international waste disposal method numerous engineering practices at home because: be subjected to the influence of consumption habit and environmental consciousness, the rubbish of external most countries is thrown in and collection method is the classification reception, at the rubbish that enters before the treatment facility, by good classification, be subjected to simultaneously living habit influence the surplus and less moisture of hogwash class amount of substance in kitchen in the rubbish and putrescible matter lower, packed standard has been created good condition for comprehensive reutilization.
And the collection method of Chinese rubbish is the mixing reception, kitchen in the rubbish is surplus and hogwash class amount of substance is higher, moisture and putrescible matter are higher, packed lack of standardization, raw refuse is almost " bag in the bag " form and throws in, and a material composition complexity can't be classified in the bag, so we lead to and are called " high humidity composting " in field of environmental engineering, it possesses following characteristic:
1. mix receiving complicated component, packed thing content height, general method can't normally effectively be classified;
2. moisture is big: average moisture 50%, and limit moisture is up to 70%; Calorific value is low: the kitchen is surplus, dregs class content is higher, on average accounts for 50%, and separation is bigger with the dehydration difficulty, and it is higher to handle energy consumption;
3. easy corrupt substances content is higher, deals with improperly and causes serious secondary pollution easily, and the recycling security of products and the commodity of rubbish are relatively poor simultaneously, and its typical composition sees the following form:
The tabulation of typical composition statistics (table one, the unit: weight %) of China's rubbish
Above composition tabulation was with 2005, and Shanghai and Nanjing, Nanning, four ground, Chongqing typical case's component content are got the result of integrated value.
All there is big defective in three kinds of waste disposal methods because of routine in implementation of China in sum, so in research and engineering application practice in recent years, it is domestic that some to have occurred be the preparation derivatived fuel of raw material with rubbish, the technology of gac and haydite and method, be intended to make full use of more waste resources, more intactly treating refuse.Such as:
Chinese patent 200510021985.7 has been announced a kind of preparation method of city refuse incineration furnace granular fuel: this technology is raw material with Chinese high humidity composting, behind the broken removal of mechanize letter sorting hard material, remaining part all is squeezed into bar-shaped fuel after pulverizing processed.This fuel is mainly used in the raw materials pretreatment operation of all refuse-burning plants, owing to be that the high humidity composting is converted into the specification granular fuel, improved calorific value effectively, changed the incineration firing mode, improve the thermoelectric fan-out capability 40-50% of rubbish, realized the zero landfill of refuse treatment.
Technological deficiency: this technology is mainly used in the raw materials pretreatment operation of all refuse-burning plants, but because the garbage power project investment is big, and processing power is big, and required quantity of refuse is big especially, therefore is not suitable for using its restricted application for small and medium-sized cities; The fuel of being produced is owing to complicated component in addition, and it is preserved and combustion conditions harshness, is not suitable for the general industry boiler.
Chinese patent 02128993.X has announced a kind of solid-fuelled preparation method who utilizes municipal wastes to produce high heat value and low pollution: this technology is raw material with Chinese high humidity composting, by extracting film, bag, sheet plastic waste wherein after the several different methods sorting, become irregular, be ground into small-particle after block-shaped through the heating bunching, mix with the crushed material of the bamboo and wood products, chemical ﹠ blended fabric and the shell class material that sub-elect in the rubbish again and rolling, make oblate spheroid shape fuel.This fuel value is higher, and cleanliness factor is good, is applicable to the general industry boiler, the application range of products broad.
Technological deficiency: technology of garbage disposal is imperfect, reclaims not thoroughly, and the easy corrupt material of high humidity that accounts for total amount 70% is not utilized effectively, and surplus materials is handled according to a conventional method, and cost is high and easily produce secondary pollution.
Chinese patent 99101469.3 has been announced a kind of municipal wastes haydite and production method thereof: with the high humidity composting is raw material, through letter sorting, remove plastics, glass and other firm materials, pulverize by oven dry, selection by winnowing, add the clay of 5-15% according to the concrete composition of rubbish, stir the granulation balling-up, oven dry then, the expanded one-tenth haydite of roasting.
Technological deficiency: technology of garbage disposal is imperfect, reclaim not thorough, a large amount of moisture material existence of 50% that surpass, the raw material stoving cost is higher, and is organic higher in the ceramic product, and the intensity of the expanded back of roasting haydite is less, influence the scope of application, material composition complexity in addition, roasting process exhaust emissions index is relatively poor, contaminate environment.
Chinese patent 02109384.9 has been announced a kind of production technique and equipment thereof that utilizes the rubbish waste residue to produce haydite: with the composting is one of raw material, account for the 50-80% (deciding) of total dosage on organic content in the rubbish, rubbish is by screening, pulverizing, back and the flyash (or shale) that accounts for the 20-50% of total dosage carry out interworking and stir behind the granulating the expanded one-tenth haydite of roasting.
Technological deficiency: rubbish is as one of haydite raw materials for production, and consumption is little, because the rubbish average moisture content is higher than 50%, the production process cost is higher, and the complicated roasting process exhaust emissions of material composition index is relatively poor in addition, contaminate environment.
Chinese patent 02112598.8 has been announced a kind of municipal wastes production process of active carbon and charring furnace: its basic technology for earlier with domestic waste through the non-inflammability material in selection by winnowing, screening, removal rubbish again after the coarse breaking, then with organic substance part through chopping, broken or pulverize, drying and dewatering is to 15-20% again, this raw material enters special construction charring furnace carbonization-activation after being squeezed into the piece material, make gac (raw product).
Technological deficiency: the rubbish technology of garbage disposal is imperfect, reclaim not thorough, non-inflammability material in the rubbish is not fully recycled, a large amount of moisture materials of 50% of surpassing are directly dried, the raw material stoving cost is higher, and refuse classification technology imperfection is because a certain amount of inorganic components exists in the finished product, make the activated carbon product grade low, the market scope of application is limited.
Chinese patent 93114051.X has announced a kind of refuse classification separation of produced process of active carbon: rubbish is through crusher in crushing, the laggard capable drying treatment of vibrations screening, carry out methods such as selection by winnowing, electromagnetism choosing, electric network seizure again garbage drying is carried out sorting, make raw material through the activated carbon that said process obtains, after crushed with hydrochloric acid and liquor zinci chloridi uniform mixing, enter the charcoal activation procedure handle work in-process, work in-process are by the washing dregs, float chlorine and handle, must meet the activated carbon products of national standard after oven dry is pulverized.
Technological deficiency: the rubbish technology of garbage disposal is imperfect, reclaim not thorough, non-inflammability material in the rubbish does not obtain effective recycling, a large amount of moisture materials of 50% of surpassing are directly dried, the raw material stoving cost is higher, refuse classification technology imperfection, assorting room complex process, the equipment complexity, the running cost height.
Because all there are various technological deficiencies in conventional garbage resource engineering chemistry technology, has directly influenced applying and effectiveness of operation of its technology, mainly shows:
1. the technology integration is poor, rubbish is only carried out selective recovery, the production product category is single, is so limited, and prior art all shows in engineering application, scale is less, the cost recovery height, the treatment and disposal expense of residuum is higher behind the refuse classification, and production process produces secondary pollution, resource utilization and utilize level low again, not environmental protection of environmental protection project.
2. the refuse classification sorting technology falls behind, and it is bigger to cause this processing apparatus and labor force to drop into, and the efficiency of separation is low, can utilize the material rate of recovery low, purity is low, increases the products production cost, it is low to make quality of finished, and the resource recycling rate is low, is difficult to embody the recovery benefit.
3. the raw-material processing treatment that sub-elects is all adopted and dry earlier the technology of afterwards pulverizing, production process can have high input by equipment, and energy consumption is higher, has influenced applying of technology.
4. process of manufacture does not consider that various pathogenic microbes are to operator's potentially dangerous in the rubbish, and health and safety condition are poor.
Based on above-mentioned analysis, characteristic at Chinese high humidity composting, adopt process for comprehensively treating to materials different in the rubbish recycling of classifying, produce different Industrial products, refuse treatment is innoxious completely, that resource utilization has become technology of garbage disposal primary study and developing direction.
Summary of the invention
The method that the objective of the invention is to overcome the shortcoming of above-mentioned prior art and a kind of comprehensive treating process high humidity mixed city garbage is provided, promptly be the disposable preparation biomass fuel of raw material, biological ceramic particle and process of active carbon, make full use of waste resources, reduce environmental pollution and energy consumption, thoroughly realize that refuse treatment is innoxious.
Find through long term studies for the high humidity mixed city garbage of China, the difficult point of its processing is how to classify, how to divide class, only under the prerequisite of classification, just may realize fully effectively utilizing of rubbish, for this reason, the present invention proposes the technical scheme of following classification:
The present invention at first effectively classifies according to the characteristics of Chinese high humidity mixing domestic waste, characteristic according to the material of classifying adopts different processing methodes then, make it resource utilization completely, final output products is three kinds: 1, be suitable for the biomass fuel greater than 1.5 Industrial Boiler of coefficient of excess air in any combustion processes; 2, be suitable for the gac that reaches relevant national standard that multiple industry is used; 3, as building material be suitable for the multiporous biological haydite that multiple industry is used.Concrete technical scheme of the present invention is as follows:
With the high humidity mixed city garbage is the disposable method for preparing biomass fuel, biological ceramic particle and activated carbon of raw material, and it comprises sorting and broken, the tromeling of rubbish, it is characterized in that also comprising the steps:
(1) preparation of biomass fuel:
(1-1) the broken and oven dry of half wet-milling: it is broken afterwards to the block of lumpiness≤50mm to carry out secondary half wet-milling through the screen overflow of tromeling, and then block is dried to water content≤promptly get below 25% biomass fuel raw material;
(1-2) granulation: in the block of above-mentioned particle diameter≤50mm, add the auxiliary agent that is equivalent to rubbish piece material weight 3-8%, carry out extruder grain after mixing again, form the granulated garbage material;
(1-3) oven dry: above-mentioned granulated garbage material is dried between 100-200 ℃,, promptly get biomass fuel to water content≤20%;
(2) will in fermenter, carry out the biological fermentation dehydration through the screen underflow of tromeling, press 0.8-3 cubic metres of air/every cubic metre of material bubbling air every day, deep aeration turns over and pushes away under 55-75 ℃ of temperature, and fermentative processing 15-20 days, till screen underflow water content≤35%;
(3) postsearch screening: will carry out postsearch screening by 6-10 purpose screen cloth through the screen underflow after the biological fermentation dehydration, and obtain secondary screen overflow and secondary screen underflow;
(3-1) preparation gac:
(3-1-1) steam flow selection by winnowing: the secondary screen overflow that sieves out is carried out the steam flow selection by winnowing, obtain that lightweight is partly that carbon containing purity reaches more than 90%, water content is 35% gac raw material;
(3-1-2) half wet-milling is broken: with half wet crushing mill water content is broken to the 6-40 order at gac raw material half wet-milling of 30-35%;
(3-1-3) interpolation of activator and stirring: gac raw material and activator mix after utilizing the cartridge type steel basin to pulverize, restrain by gac 1 00: activator 300-400ml mixes thoroughly and is blended into the raw material that next step need be processed; Wherein the preparation method of activator is: after cadmia or zinc gray are mixed, add hydrochloric acid displaces when PH is 3-4, get degree Beaume 36-45 ° liquid and make the zinc chloride activation agent;
(3-1-4) charcoal activation: with the activation of above-mentioned raw materials charcoal, remove wherein zinc chloride and most of hydrogenchloride with vertical revolution carbon activation furnace, when zinc chloride degree Beaume position 0 was spent in the tail vapour, charcoal reactivation process finished, the activation charcoal after must activating;
(3-1-5) pickling desliming: utilize the cartridge type agitator will go out the 10-18% adding hydrochloric acid of carbon activation furnace material by activation charcoal weight, carrying out acid with hot water more than 95 ℃ (the hot water heating comes from operation water cooling process to zinc chloride waste gas cooling process) boiled 6-10 hour, to activate charcoal again changes in the husky agitator of dirt, make carbon, the husky separation, discharge at the bottom of husky mud sinks to barrel;
(3-1-6) float chlorine: utilize the cartridge type agitator that chlorine to solution pH value is floated in activation charcoal stirring under the situation of continuous make up water of pickling desliming and be 6-7, remove the hydrogenchloride in the activation charcoal;
(3-1-7) centrifuge dehydration: utilize link-suspended basket centrifuge to go into to carry out centrifuge dehydration, its moisture is reduced to below 60% through floating the qualified carbon of chlorine;
(3-1-8) gac oven dry: the material after utilizing cyclone type steam flow drying machine with centrifuge dehydration is sent in the drying tower by sealing screw, blast clean hot blast to the material heat drying with gas blower, capture finished product gac on 120 orders at cyclonic separator and cloth bag trap, what be not collected is the following thick charcoals of 120 orders;
(3-1-9) the grinding fragmentation of thick carbon: utilize porcelain ball ball mill with the thick carbon below 120 orders in ball mill, porcelain ball ball milling reached the 120-140 order in 2-6 hour, the finished product gac.
(3-2) will carry out postsearch screening by 6-10 purpose screen cloth through the screen underflow after the biological fermentation dehydration, secondary screen underflow inorganic content 〉=80% that sieves out is the biological ceramic particle raw material;
(3-2-1) grinding of raw material: utilize Raymond mill that the biological ceramic particle raw material is machined to granularity 160-240 order;
(3-2-2) stir homogenization treatment: utilize the continuity biaxial rneader with 160-240 order biological ceramic particle raw material stirring homogeneous, can according to circumstances add some functional substance simultaneously in good time;
(3-2-3) extrusion molding granulation; It is orthopedic round as a ball to utilize the drum-type Squeezinggranulator that the raw material that stirs homogeneous is carried out, and obtaining diameter is the 3-30mm particulate material;
(3-2-4) sintering processes: utilize the sintering integrated machine of drum drying that extruded granule is dried sintering, bake out temperature is 850-1150 ℃, enters the material moisture 3-8% of sintering process after the oven dry, and sintering temperature is 850-1150 ℃;
(3-2-5) cooling process unit: utilize drum-type cooling machine, with temperature 850-1150 ℃ biological ceramic particle, cooling is 10-15 minute under little condition of negative pressure, promptly gets the biological ceramic particle product.
Wherein, the auxiliary agent that is added in (1-2) granulation step is wherein any one of calcium oxide, lime carbonate or white lime, and the particle diameter of the granulated garbage material of formation is that 20-30mm, length are 40～100mm, water content≤36%;
Wherein, the temperature that is adopted in (1-3) baking step is 150 ℃;
Wherein, in order to utilize resource better, partly be biological haydite materials through the heavy after (3-1-1) steam flow selection by winnowing, use with the biological ceramic particle raw material merging in (3-2).
Need to prove that the sorting of rubbish and broken, tromeling are the conventional known technologies that rubbish is classified in advance.
The sorting of rubbish and fragmentation generally are to adopt mechanical type sorting and fragmentation, and basic requirement is to guarantee broken bag rate 〉=95%, and discharging lumpiness≤100mm sorts out large piece articles such as rigid material such as brick, rubble, metal, battery and leatherware, clothes automatically.
Tromeling is that process sorting and broken back remaining aqueous amount are reached the process that 50% broken rubbish screens in special trommel screen, and it becomes screen overflow and screen underflow two portions with refuse classification, and wherein the typical case of screen overflow constitutes:
Typical composition tabulation (table two, unit: weight %) by the screen overflow after the above-mentioned processing
Typical composition tabulation (table three, unit: weight %) by the screen underflow after the above-mentioned processing
Can find out obviously that screen overflow has following feature:
Be mainly the material of the difficult degraded of paper, plastics and other higher calorific values, account for 21.45% of total amount, comprehensive moisture about 40% does not contain rubbish from cooking and the corrupt substance that easily ferments substantially except that adhering to dregs, and above-mentioned substance has following characteristics:
1.. can not carry out compost treatment, can't degrade, cause the soil secondary pollution after bringing the finished product compost at fermenting process;
2.. directly the recovery value amount is little, is difficult to thorough classification, and comprehensive moisture 40% is preserved and used sanitary condition poor, and directly recovery can not utilize fully, and the rate of recovery is low;
3.. calorific value content height, the average calorific value of over dry material is higher than 4500Kcal/kg;
4.. possess and produce the good material condition that clean biomass fuel is produced, mainly show: the precursors that the De dioxins materials generates in the high humidity mixing burning city domestic garbage process is a chlorine-bearing compound, it is mainly derived from salt remaining in the rubbish from cooking according to Chinese consumption habit, by realizing the maximum minimizing of chlorine-bearing compound after the screening.
These features show that screen overflow has possessed the characteristic as biomass fuel, but its granularity is big, water content is also higher, just can reach the requirement of biomass fuel after also must handling through method provided by the invention;
Secondary half wet-milling is broken to be meant under material moisture is higher than 30% situation, need not do the oven dry processing to material and directly carry out grinding and processing, purpose is the block that above-mentioned screen overflow is ground into lumpiness≤50mm under the situation of water content higher (40%), is beneficial to follow-up oven dry and processing;
Again the block of above-mentioned lumpiness≤50mm is dried, can adopt multiple drying mode, generally be to adopt special-purpose efficient cigarette vapour formula stirring drier, under 250-300 ℃, dry to water content≤below 25%, and then in the block of above-mentioned particle diameter≤50mm, add the auxiliary agent of rubbish piece material weight 3-8%, these auxiliary agents can be calcium oxide, wherein any one of lime carbonate or white lime, carry out extruder grain after mixing again, form the granulated garbage material, at last above-mentioned granulated garbage material is dried under 100 ℃ temperature, till water content≤20%, promptly get biomass fuel.
According to the typical composition of screen underflow as can be seen, screen underflow has following characteristic:
According to the typical composition of screen underflow as can be seen, screen underflow has following characteristic:
Screen underflow accounts for 77.5% of total amount, is that four class materials constitute:
1. surplus, the pericarp in kitchen, dish root, etc. putrefactive material;
2. dregs (containing broken hard material);
3. the mixture of fiber substances such as paper scrap, peanut melon seed cases, Chinese medicine slag, tealeaf residue, leaf deadwood;
4. Can Yu plastics and rag class material.
The composition analysis result is: 1. surplus, the pericarp in kitchen, dish root, etc. putrefactive material account for 50% of screen underflow mass fraction, average moisture 70%; 2. dregs (containing broken hard material) accounts for 23.5% of screen underflow mass fraction, average moisture 30%; 3. fiber substances such as paper scrap, peanut melon seed cases, Chinese medicine slag, tealeaf residue, leaf deadwood account for 25% of screen underflow mass fraction, average moisture 55%; 4. Can Yu plastics and rag class material account for screen underflow mass fraction 1.5%, average moisture 15%.
Above material has following feature: component is 1. because of containing a large amount of unsaturated fatty acidss and protein matter, moisture more very easily ferments, at aerobic condition bottom fermentation temperature height, high-temperature duration length has stronger moisture evaporation ability, it is humic acid material and part macrofiber that product is finished in fermentation, is the good pore forming material of production porous expanded ceramsite; Component 2. dregs contain in (containing broken hard material) about 50% cinder all the other for dust with the pottery, the stone metallic substance mixture, its component possesses the framework material condition of production hole expanded ceramsite fully; Component existence of (account for certainly dry biomass branch rate 90%) 3. because a large amount of cellulosic compositions, has the good condition of producing wood activated charcoal, 4. Can Yu plastics and rag class material account for screen underflow mass fraction 1.5%, handle in the raw materials for production that are distributed to two series products that because of content low pass operation later following process can not affected greatly.Wherein, the comprehensive moisture 50-60% of four class materials.In the case ordinary method be difficult to separate, sorting.Former because: 1. inter-adhesive between the moisture high material, adhesion is united easily in screening plant, in addition surplus, the pericarp in kitchen, dish root, etc. putrefactive material when not being decomposed granularity quite can't separate with fiber substance granularities such as paper scrap, peanut melon seed cases, Chinese medicine slag, tealeaf residue, leaf deadwoods, as adopt method for sieving to stop up sieve aperture easily, inefficiency, separation rate less than 60%.2. four kinds of material bulk density gaps are less under the moisture situation of height, and are mobile poor, can not adopt selection by winnowing to separate.Secondly, also contain a large amount of pathogenic microbes in this screen underflow, the very easy health that influences the operator.
Therefore, adopting conventional separation method is to carry out this two classes raw material effectively isolating, must find a kind of effective way will moisture content wherein to reduce and kill pathogenic microbes, for this reason, the invention provides following method-screen underflow is carried out biological fermentation dehydration: ferment through aerobic high-heat, can remove large quantity of moisture, under the degree of depth is exposed to the sun the condition of vapour turning, reduce to below 35% by the water ratio of its raw material after 15-20 days the fermentative processing; The kitchen is surplus, pericarp, dish root become thoroughly decomposed fully, all pathogenic microbes total loss activity, and the processing and the safety performance of raw material are better.Handle owing to raw refuse effectively sorts broken and strict screening simultaneously, the content of plastics that it is remaining and rag class material is lower than 2%, satisfied back operation ingredient requirement.
To the screen underflow after the process biological fermentation processed, its separation just becomes simple.Because the water ratio of this stage raw material is below 35%, so separating substances such as coal ash, dregs and a large amount of hogwash classes of having become thoroughly decomposed, animal class can be become the secondary screen underflow by 6-10 purpose screen cloth; The secondary screen overflow is mainly fiber, pulverizes rigid materials such as waste paper scrap, peanut melon seed cases, Chinese medicine slag, tealeaf residue, the isometric fibrous matter of leaf deadwood and a small amount of sticking clothes earth and pieces of glass, pottery.
Wherein, characteristic to the secondary screen overflow that sieves out is analyzed, it comprises these characteristics: screen overflow accounts for about raw refuse total amount 13-18%, fiber, pulverizes waste paper scrap, peanut melon seed cases, Chinese medicine slag, tealeaf residue, the isometric fibrous matter of leaf deadwood and accounts for 15-17%; Rigid materials such as sticking clothes earth and pieces of glass, pottery account for 1-3%.By above composition analysis as can be seen wherein the material more than 85% be the macrofiber material, pick out rigid materials such as sticking clothes earth and pieces of glass, pottery and possess the condition of producing wood activated charcoal, so handle according to the following steps, can produce the gac that reaches relevant national standard that is suitable for multiple industry use:
The secondary screen overflow is carried out the air-flow selection by winnowing, to carry out postsearch screening by 6-10 purpose screen cloth through the screen underflow after the biological fermentation dehydration, the secondary screen overflow that sieves out is carried out the air-flow selection by winnowing, promptly according to bank proportion and size-grade distribution characteristics, air advection speed is at the 5-6 meter per second in the air-classifier, admission pressure 200mm water column; The solid substance filling ratio is lower than under 20% the situation in the air-classifier casing, lightweight that can sedimentation obtains from floating matter partly is carbon containing purity and reaches more than 90%, moisture 35% activated carbon raw material is deposited on the intravital heavy of air-classifier case and partly is pieces of glass, pottery etc.; Wherein, separated heavier substances is the first-class raw material of preparation biological ceramic particle owing to contain a large amount of element silicons; Then the activated carbon raw material pulverized, is added activator, charcoal activation, pickling desliming successively, float chlorine, the grinding fragmentation of centrifuge dehydration, activated carbon oven dry, thick charcoal, obtain high-quality activated carbon product.
The secondary screen underflow is analyzed, find that it has following characteristic: the secondary screen underflow is a coal ash, materials such as dregs and a large amount of hogwash classes of having become thoroughly decomposed, animal class, also can add refuse classification system recoveries hard material, and the hard material that selection by winnowing produced in Activated Carbon Production process recovery, constitute after three parts are compiled: inorganic content accounts for 80% (materials such as pottery, glass, stone pledge material account for); Organic composition accounts for 20%; By typical composition as can be seen this type of material account for the 10-11% of crude waste total amount.The composition of above-mentioned substance meets domestic conventional biological stephanoporate haydite production raw material index fully, possesses the condition of producing the biological stephanoporate haydite, so use as building material and the multiporous biological haydite materials that is suitable for multiple industry use.
Need to prove, the method that above-mentioned three kinds of raw materials are processed into biomass fuel product, activated carbon products, multiporous biological ceramic product respectively can adopt method corresponding in the background technology, it also can be other known method of not mentioning in this application, as long as can obtain corresponding raw material, the method that these raw materials is processed into corresponding product is a lot, but technical scheme provided by the invention is through the most preferred technical scheme after the check experiment.
The present invention has following advantage than prior art:
Because the present invention has adopted conventional separating steps such as sorting fragmentation, tromeling, add special biological fermentation dehydration technique, be aided with postsearch screening again, can once the high humidity mixed city garbage be separated into three kinds of raw materials that meet processing request, by working method separately, can obtain three kinds of products: the one, the biomass fuel that high-grade commodity and security are fabulous; Two, be to be suitable for the activated carbon product that reaches relevant national standard that multiple industry is used; Three, as building material be suitable for the multiporous biological ceramic product that multiple industry is used.Basic zero landfill of realizing in the middle of the entire treatment process, the basic non-secondary pollution deposits yields for the treatment of processes had both embodied good environmental benefit and has got back and reclaim profit greatly, was that an important technology is broken through.Secondly, the part of the heavy after the steam flow selection by winnowing as the biological ceramic particle raw material, has been utilized resource more fully, it is perfect that whole rubbish separation processes has been obtained, and realized the target of harmless treatment rubbish.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail, but protection scope of the present invention has more than and is limited to these examples.
Embodiment 1: with the high humidity mixed city garbage is the disposable preparation biomass fuel of raw material, biological ceramic particle and process of active carbon, comprises the steps:
One, the sorting of rubbish and fragmentation: the high humidity mixed city garbage is carried out effective mechanize letter sorting and broken, guarantee broken bag rate 〉=95%, discharging lumpiness≤100mm, automatically sort out large piece articles such as rigid material such as brick, rubble, metal, battery and leatherware, clothes, wherein large piece article such as leatherware, clothes retrieval system secondary breaking after big part break process;
Two, tromeling: be that process sorting and broken back remaining aqueous amount are reached the process that 50% broken rubbish screens in special trommel screen, it becomes screen overflow and screen underflow two portions with refuse classification, and wherein the typical case of screen overflow constitutes:
Typical composition tabulation (table four, unit: weight %) by the screen overflow after the above-mentioned processing
Typical composition tabulation (table five, unit: weight %) by the screen underflow after the above-mentioned processing
Three, preparation biomass fuel: can realize that by tromeling the screen overflow refuse moisture reduces by 10 percentage points, average moisture content is 40%, simultaneously because the removal of easy corrupt material has guaranteed calorific value and shelf time, the scope of application and the security of fuel.
But the screen overflow granularity is relatively large, easy winding and material dewatering surface-area are less relatively in drying machine, be unfavorable for oven dry and granulation, therefore will carry out the block of the broken back of secondary half wet-milling through the screen overflow of tromeling to lumpiness≤50mm, drying then, can adopt multiple drying mode, generally is to adopt special-purpose efficient cigarette vapour formula stirring drier, under 250-300 ℃, dry to water content≤below 25%, promptly get the biomass fuel raw material.For making full use of resource, the thermal source of efficient cigarette vapour formula stirring drier preferably adopts the supply of burning of self-produced fuel.
With the method for above-mentioned biomass fuel feedstock production finished product be: the calcium oxide that in the rubbish piece material of above-mentioned particle diameter≤50mm, adds rubbish piece material weight 3%, carry out extruder grain after mixing again, the formation particle diameter is that 20mm, length are the granulated garbage material of 40～100mm; And then above-mentioned granulated garbage material dried under 100 ℃ temperature, till water content≤20%, promptly getting the biomass fuel finished product, this operation adopts the fluidized drying cooling all-in-one of special construction to finish.
Biomass fuel by the said process preparation possesses following characteristics:
1. the security commodity of fuel is fabulous: because the surplus removal fuel of material that waits in the kitchen in the rubbish has good preservation and use properties.Normal temperature can guarantee shelf lives, not efflorescence and the Secondary Fermentation about 1 year down.Simultaneously because the maximum minimizing of chlorine-bearing compound, it is minimum that burning generates the generation of dioxins materials, point of ignition is low, the sufficient combustion bed drain purge is lower than 15%, the hot burn decrement rate of deslagging is lower than 3%, can be directly as the building materials raw material, the tail gas index is better than common anthracitic burning tail vapour discharging, is suitable for coefficient of excess air in any combustion processes greater than 1.5 Industrial Boiler;
2, effectively improve calorific value: evidence, the rubbish of low heat value 1100Kcal/kg, calorific value can reach 3000Kcal/kg after said process processing;
3, calorific value is stable: the biomass fuel after above-mentioned processing, and the calorific value basically identical has been guaranteed the operation stability of boiler;
4, because combustion conditions improves, output effectively utilizes the heat energy utilization rate to be higher than 70%; Both embody environmental benefit, realized reclaiming benefit again to greatest extent.
Adopt the prepared biomass fuel of the present invention in incinerator, burn and compare parameters such as following table: " the municipal wastes management and treatment and disposal technological standard standard application practice pandect " that these parameters will report press to publish by 2002 8 moonlight tomorrow with municipal wastes, p804-805 the 5th joint, the content of main technical details and economic parameters is determined:
| Sequence number | Project | Rubbish directly burns | Biomass fuel burns |
| 1 | To the crude waste requirement | Q y dw≥1000Kcal/kg | Q y dw≥600Kcal/kg |
| 2 | Bulk density | r＝250～350kg/m 3 | r≥600kg/m 3 |
| 3 | Temperature of combustion | 724～1050℃ | 1050℃～1300℃ |
| 4 | Rubbish is in the incinerator residence time | 1.5h～2.5h | 1h～1.5h |
| 5 | The rubbish bed thickness | 500～1000mm | 500～1500mm |
| 6 | Burning tail thermal load | 8×10 4～15×10 4Kcal/m 3h | 1.5×10 4～25×10 4Kcal/m 3h |
| 7 | The incinerator load range | 90％～100％ | 100％～140％ |
| 8 | The high heating value material adds | 15％～30％ | \ |
| 9 | The hot burn decrement rate of dregs of incinerator | 5％～10％ | Below 1% |
| 10 | The dregs of incinerator organic content | 0.1％～3％ | \ |
| 11 | Outlet exhaust gas dust concentration | 80～120mmg/m 3 | 30～40mmg/m 3 |
| 12 | Lingemann blackness | The I level | \ |
| 13 | The burner hearth coefficient of excess air | 1.5～2 | 2-4 |
| 14 | Average rubbish electric energy heat recovery rate | 5-8％ | 20-30％ |
| 15 | The average treatment cost | 60～90 yuan/ton | 32.6 unit/ton |
In a word, after preparing biomass fuel by method provided by the present invention, burn again, it is the optimal path that changes existing incinerator working condition, reduced the requirement of incineration treatment of garbage simultaneously to raw material, calorific value and moisture content, improved the scope of application of burning method treating refuse, reduce energy consumption and cost, improve the output of processing power and heat energy, and the secondary pollution that greatly reduces tail gas and caused, be that an important technology is broken through, in addition, utilize this technology the incinerator that has now stopped production can be restarted use, greatly saved investment.
Four, screen underflow biological fermentation dehydration: will carry out the biological fermentation dehydration in the fermenter again through the screen underflow of tromeling, deep aeration turns over and pushes away, and fermentative processing 15-20 days, till screen underflow water content≤35%; Wherein, the adjusting of air flow is carried out according to temperature and change of soil water content situation.It 1-3 days was fermenting process intensification section that material enters fermenting process, temperature rises to 75 ℃ by normal temperature in the fermenter, for improving the reproduction speed of aerobic bacterial classification, oxygenation capacity should be controlled at the required oxygen scope of culture propagation, and every day need be by 1 cubic metres of air/every cubic metre of material bubbling air; It 3-10 days was the fermenting process constant temperature zone that material enters fermenting process, temperature remains on 55-75 ℃ in this stage fermentation groove, be activity and the breeding potential that guarantees aerobic bacterial classification, accelerated evaporation moisture, effectively kill various pathogenic microbes, every day need be by 3 cubic metres of air/every cubic metre of material bubbling air; Entering fermenting process at material 10-15 days was the fermenting process temperature descending section, and temperature is reduced to normal temperature by 55-75 ℃ in the fermenter, was the assurance cooling rate, accelerated evaporation moisture, and every day need be by 0.8 cubic metres of air/every cubic metre of material bubbling air;
Five, the preparation of gac: will carry out postsearch screening by 6-10 purpose screen cloth through the screen underflow after the biological fermentation dehydration, the secondary screen overflow that sieves out is carried out the air-flow selection by winnowing, promptly according to bank proportion and size-grade distribution characteristics, air advection speed is at the 5-6 meter per second in the air-classifier, admission pressure 200mm water column; The solid substance filling ratio is lower than under 20% the situation in the air-classifier casing, lightweight that can sedimentation obtains from floating matter partly is carbon containing purity and reaches more than 90%, moisture 35% activated carbon raw material is deposited on the intravital heavy of air-classifier case and partly is pieces of glass, pottery etc.
The method that above-mentioned gac raw material is made finished product is:
1, pulverize: with half wet crushing mill to activated carbon raw material moisture content under the situation of 30-35%, half wet-milling is broken to the 6-40 order;
2, the interpolation of activator and stirring: gac raw material and activator mix after utilizing the cartridge type steel basin to pulverize, restrain by gac 100: activator 300-400ml mixes thoroughly and is blended into the raw material that next step need be processed; Wherein the preparation method of activator is: after cadmia or zinc gray are mixed, add hydrochloric acid displaces when PH is 3-4, get degree Beaume 36-45 ° liquid and make the zinc chloride activation agent;
3, charcoal activation: the above-mentioned raw materials charcoal is activated with vertical revolution carbon activation furnace, body of heater upper end has and contains the zinc chloride waste gas income cooling tower that raises up in a large number, when being cooled to below 300 ℃, become sticking shape liquid to fall within the zinc chloride liquid hopper, adorn on the condensing tower top again with cold water sprays, the cooling of the hydrogenchloride water vapour below 50 ℃ mist formation, fall into oblique louver with water and flow in the wastewater disposal basin, activated carbon changes over to and reclaims zinc chloride to the 0 degree reactivation process end of tail vapour degree Beaume, the activation charcoal after must activating;
4, pickling desliming: utilize the cartridge type agitator will go out the 10-18% adding hydrochloric acid of carbon activation furnace material by activation charcoal weight, carrying out acid with hot water more than 95 ℃ (the hot water heating comes from operation water cooling process to zinc chloride waste gas cooling process) boiled 6-10 hour, to activate charcoal again changes in the husky agitator of dirt, make carbon, the husky separation, discharge at the bottom of husky mud sinks to barrel;
5, float chlorine: utilize the cartridge type agitator that chlorine to solution pH value is floated in activation charcoal stirring under the situation of continuous make up water of pickling desliming and be 6-7, remove the hydrogenchloride in the activation charcoal;
Utilize the cartridge type agitator will activate charcoal and gently under stirring, float chlorine with water, the water of outflow and above-mentioned waste water are integrated with settling tank, fully post precipitation get supernatant liquor be metered to neutralization reaction poor in, add the abundant reaction precipitations of precipitation agent such as lime, get supernatant liquor, by 3/100000ths being under the waste water per ton after the 30-100 gram activated carbon adsorption, sand filtration gets clear water and can reach water supply standard and use for the production cocycle again;
6, centrifuge dehydration: utilize link-suspended basket centrifuge to go into to carry out centrifuge dehydration through floating the qualified carbon of chlorine, its moisture is reduced to below 60%, the water that is produced returns settling tank, the secondary circulation utilization;
7, activated carbon oven dry: utilize cyclone type steam flow drying machine that the centrifuge dehydration material is sent in the drying tower by sealing screw, blast clean hot blast to the material heat drying with gas blower, capture at cyclonic separator and cloth bag trap and to be the finished product gac on 120 orders, what be not collected is the following thick carbon of 120 orders;
8, the grinding fragmentation of thick carbon: utilize porcelain ball ball mill that the thick carbon below 120 orders is fallen into bunker by cyclonic separator, open a sluice gate to flow in 20-25 rev/min the ball mill, porcelain ball ball milling reached the 120-140 order in 2-6 hour, the finished product gac.
The activated carbon product of present method preparation has following characteristic:
Because of the main raw material of domestic production gac based on coal; so the national standard of ature of coal granulated active carbon is more perfect; the production of wood activated charcoal is consults and carries out, and has stipulated that just relevant detection method now compares product major control index for ease of contrasting.
Reclaim solvent ature of coal granulated active carbon (GB7701.2-87) the key technical indexes
With this handicraft product index contrast tabulation
| Project | Index | This handicraft product index |
| Moisture % | ≤5 | ≤5 |
| Intensity % | ≥90 | ≥90 |
| Point of ignition ℃ | ≥300 | ≥350 |
| Tetracol phenixin adsorption rate % | ≥54 | ≥67 |
| Packing density g/L | Actual measurement | Actual measurement |
| Granularity mm 〉=5.50 2.75～5.50 1.0～2.75≤1.00 | ≤ 5% do not stipulate≤15%≤1% | So because of the present gac market requirement to product granularity index and big this technology of the equal gap of particle shape now 120 order powder-like products be that main root needs process by order requirement granulation separately according to the client |
Six, the preparation of biological ceramic particle raw material: will carry out postsearch screening by 6-10 purpose screen cloth through the screen underflow after the biological fermentation dehydration, secondary screen underflow inorganic content 〉=80% that sieves out is the biological ceramic particle raw material; In order to utilize resource better, can be with the part of the heavy after the air-flow selection by winnowing in the activated carbon feedstock production as the biological ceramic particle raw material.
Above-mentioned biological ceramic particle feedstock production is become the biological ceramic particle product, can adopt several different methods, as:
1, grinding of raw material: utilize Raymond mill that the biological ceramic particle raw material is machined to granularity 160-240 order;
2, stir homogenization treatment: utilize the continuity biaxial rneader with 160-240 order biological ceramic particle raw material stirring homogeneous, can according to circumstances add some functional substance simultaneously in good time, as adding the silicates that improves intensity;
3, extrusion molding granulation: the raw material that utilizes the drum-type Squeezinggranulator will stir homogeneous carries out orthopedic round as a ball, and to guarantee the good sintering character of product, making diameter is the 3-30mm particulate material;
4, sintering processes: utilize the sintering integrated machine of drum drying that extruded granule is dried sintering, this process oven dry and sintering operation form integrated operation, barrel front end is the oven dry section, high temperature 850-1150 ℃ of cigarette vapour is sprayed into by the cylindrical shell middle part, the suction of tail vapour is positioned at barrel front end, purpose is to make full use of the waste heat that sintering process produces, and enters the material moisture 3-8% of sintering process after the oven dry, sintering temperature 850-1150 ℃;
5, cooling process unit: utilize drum-type cooling machine; With the raw material behind temperature 850-1150 ℃ the sintering, to normal temperature, to pack carrying out cooling process under little condition of negative pressure, process of cooling should guarantee 10-15 minute cooling time for guaranteeing that haydite does not ftracture, and promptly gets the biological ceramic particle product.
This biological ceramic particle product possesses following characteristic:
Lytag (standard GB 2838-81) main performance index
Contrast with this handicraft product index
| Sequence number | Test item | Index request | This handicraft product index |
| 1 | The particle diameter scope | 5-10mm; Three orders of magnitude of 10-15mm 15-20mm | 5-10mm; Two orders of magnitude of 10-15mm |
| 2 | The unit weight grade of haydite | 700610-700800710-800900810-900 kilogram/cube six orders of magnitude | 500.510-600.600 kilogram/cube three orders of magnitude |
| 3. | The grade of compressive strength of haydite | 700≮4.0；800≮5.；0900≮6.5 MPa | 500≮4.0；600≮5.0MPa |
| 4 | The water-intake rate of haydite and coefficient of softening | Water-intake rate should be greater than 22%.Coefficient of softening should be less than 0.80 | Water-intake rate is less than 20%.Coefficient of softening is greater than 0.85 |
| 5 | The soundness of haydite | Measure soundness with the metabisulfite solution method, weight loss is less than 5% behind five special ring tests. | Measure soundness with the metabisulfite solution method, weight loss is less than 5% behind five special ring tests. |
| 6 | The stability of haydite | Boiling method check weight loss is less than 2%. | Boiling method check weight loss is less than 2%. |
| 7 | The loss on ignition of haydite | Loss on ignition should be greater than 4% | Loss on ignition is less than 4% |
Claims (6)
1, be the disposable preparation biomass fuel of raw material, biological ceramic particle and process of active carbon with the high humidity mixed city garbage, it comprises sorting and broken, the tromeling of rubbish, it is characterized in that also comprising the steps:
(1) preparation of biomass fuel:
(1-1) the broken and oven dry of half wet-milling: it is broken afterwards to the block of lumpiness≤50mm to carry out secondary half wet-milling through the screen overflow of tromeling, and then block is dried to water content≤promptly get below 25% biomass fuel raw material;
(1-2) granulation: in the block of above-mentioned particle diameter≤50mm, add the auxiliary agent that is equivalent to rubbish piece material weight 3-8%, carry out extruder grain after mixing again, form the granulated garbage material;
(1-3) oven dry: above-mentioned granulated garbage material is dried between 100-200 ℃,, promptly get biomass fuel to water content≤20%;
(2) will in fermenter, carry out the biological fermentation dehydration through the screen underflow of tromeling, press 0.8--3 cubic metres of air/every cubic metre of material bubbling air every day, deep aeration turns over and pushes away under 55--75 ℃ of temperature, and fermentative processing 15-20 days, till screen underflow water content≤35%;
(3) postsearch screening: will carry out postsearch screening by 6-10 purpose screen cloth through the screen underflow after the biological fermentation dehydration, and obtain secondary screen overflow and secondary screen underflow;
(3-1) preparation gac:
(3-1-1) air-flow selection by winnowing: the secondary screen overflow that sieves out is carried out the air-flow selection by winnowing, obtain that lightweight is partly that carbon containing purity reaches more than 90%, water content is 35% gac raw material;
(3-1-2) half wet-milling is broken: with half wet crushing mill water content is broken to the 6-40 order at gac raw material half wet-milling of 30--35%;
(3-1-3) interpolation of activator and stirring: gac raw material and activator mix after utilizing the cartridge type steel basin to pulverize, restrain by gac 100: activator 300--400ml mixes thoroughly and is blended into the raw material that next step need be processed; Wherein the preparation method of activator is: after cadmia or zinc gray are mixed, add hydrochloric acid displaces when pH is 3-4, get degree Beaume 36-45 ° liquid and make the zinc chloride activation agent;
(3-1-4) charcoal activation: with the activation of above-mentioned raw materials charcoal, remove wherein zinc chloride and most of hydrogenchloride with vertical revolution carbon activation furnace, when zinc chloride degree Beaume position 0 was spent in the tail vapour, charcoal reactivation process finished, the activation charcoal after must activating;
(3-1-5) pickling desliming: utilize the cartridge type agitator will go out the carbon activation furnace material and add 10-18% hydrochloric acid by activation charcoal weight, carrying out acid with hot water more than 95 ℃ boiled 6-10 hour, to activate charcoal again and change in the husky agitator of dirt, make charcoal, the husky separation, discharge at the bottom of husky mud sinks to barrel;
(3-1-6) float chlorine: utilize the cartridge type agitator that chlorine to pH value of solution value is floated in activation charcoal stirring under the situation of continuous make up water of pickling desliming and be 6-7, remove the hydrogenchloride in the activation charcoal;
(3-1-7) centrifuge dehydration: utilize link-suspended basket centrifuge to go into to carry out centrifuge dehydration, its moisture is reduced to below 60% through floating the qualified activation charcoal of chlorine;
(3-1-8) activated carbon oven dry: the material after utilizing cyclone type steam flow drying machine with centrifuge dehydration is sent in the drying tower by sealing screw, blast clean hot blast to the material heat drying with gas blower, capture finished product gac on 120 orders at cyclonic separator and cloth bag trap, what be not collected is the following thick charcoals of 120 orders;
(3-1-9) the grinding fragmentation of thick charcoal: utilize porcelain ball ball mill with the thick charcoal below 120 orders in ball mill, porcelain ball ball milling reached the 120-140 order in 2-6 hour, the finished product gac;
(3-2) will carry out postsearch screening by 6-10 purpose screen cloth through the screen underflow after the biological fermentation dehydration, secondary screen underflow inorganic content 〉=80% that sieves out is the biological ceramic particle raw material;
(3-2-1) grinding of raw material: utilize Raymond mill that the biological ceramic particle raw material is machined to granularity 160-240 order;
(3-2-2) stir homogenization treatment: utilize the continuity biaxial rneader with 160-240 order biological ceramic particle raw material stirring homogeneous;
(3-2-3) extrusion molding granulation; It is orthopedic round as a ball to utilize the drum-type Squeezinggranulator that the raw material that stirs homogeneous is carried out, until particle diameter 3-30mm;
(3-2-4) sintering processes: utilize the sintering integrated machine of drum drying that extruded granule is dried sintering, bake out temperature is 850-1150 ℃, enters the material moisture 3-8% of sintering process after the oven dry, sintering temperature 850-1150 ℃;
(3-2-5) cooling process unit: utilize drum-type cooling machine; With temperature 850-1150 ℃ biological ceramic particle, under little condition of negative pressure, cooled off 10-15 minute, promptly get the biological ceramic particle product.
2, method according to claim 1 is characterized in that the auxiliary agent that is added is wherein any one of calcium oxide, lime carbonate or white lime in (1-2) granulation step.
3, method according to claim 1 is characterized in that in (1-2) granulation step, and the particle diameter of the granulated garbage material of formation is that 20-30mm, length are 40～100mm.
4, method according to claim 1 is characterized in that in (1-2) granulation step, granulated garbage material water content≤36% of formation.
5, method according to claim 1 is characterized in that the temperature that is adopted is 150 ℃ in (1-3) baking step.
6, method according to claim 1 is characterized in that partly being biological haydite materials through the heavy after (3-1-1) air-flow selection by winnowing, uses with the biological ceramic particle raw material merging in (3-2).
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| CN101693535B (en) * | 2009-02-23 | 2011-08-03 | 深圳市兖能环保科技有限公司 | System, device and method for preparing active carbon |
| CN101880566A (en) * | 2010-06-12 | 2010-11-10 | 彭炜 | Method for separating, concentrating and recycling house refuse and treatment device thereof |
| CN101913186B (en) * | 2010-08-09 | 2012-10-10 | 中国科学院生态环境研究中心 | Process and complete equipment for producing porous ceramsite from construction waste |
| CN102851093A (en) * | 2012-06-29 | 2013-01-02 | 东北林业大学 | Method for preparing biological powder fuel by using peony pods and seed coats |
| CN106010723A (en) * | 2015-12-14 | 2016-10-12 | 郎小浩 | Municipal domestic garbage sludge synthetic fuel processing system |
| CN105819423A (en) * | 2016-03-18 | 2016-08-03 | 常州大学 | Preparation method of rice straw biocarbon |
| CN106799387A (en) * | 2016-12-21 | 2017-06-06 | 四川雷鸣环保装备有限公司 | The method for preparing derivatived fuel RDF, biological organic fertilizer and inorganic building material as raw material with rubbish |
| CN109385317A (en) * | 2018-11-26 | 2019-02-26 | 安徽吉露科技有限公司 | A kind of preparation method of new energy materials |
| CN111659693A (en) * | 2019-03-07 | 2020-09-15 | 东莞市金铭信息技术咨询有限公司 | Non-combustible processing system |
| CN110976493B (en) * | 2020-01-03 | 2021-01-29 | 台成环保科技(上海)股份有限公司 | Construction waste treatment equipment |
| TWI761775B (en) * | 2020-03-02 | 2022-04-21 | 明春窯業股份有限公司 | Method for recycling waste foundry sand |
| CN111553540B (en) * | 2020-05-13 | 2023-07-25 | 湖南现代环境科技股份有限公司 | Intelligent batching system and method for agriculture and forestry biomass power plant |
| CN113479879B (en) * | 2021-08-02 | 2022-09-16 | 桂林电子科技大学 | Activated carbon material based on secondary fermentation vinasse and preparation method and application thereof |
| CN115156254A (en) * | 2022-07-19 | 2022-10-11 | 北京嘉博文生物科技有限公司 | Dry and wet garbage co-processing technology and equipment |
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Effective date of registration: 20140806 Address after: Ying Xiang Garden 643000 Zigong city in Sichuan province Ziliujing District 1 Building 1 unit of No. 4 Patentee after: Lei Fengyuan Address before: Daan District Lianggaoshan Li Road 643012 Sichuan city of Zigong province No. 19 Patentee before: Leiming Biological Environment Protection Engineering Co., Ltd., Sichuan |
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