CN101891364B - Star wheel sludge drying system utilizing zero-carbon heat sources - Google Patents
Star wheel sludge drying system utilizing zero-carbon heat sources 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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/33—Wastewater or sewage treatment systems using renewable energies using wind energy
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The invention relates to a star wheel sludge drying system which mainly comprises a wet sludge storing field, a raw material rationing assembly, a tower body structure frame, a star wheel throttling and drying assembly, a star wheel driving assembly, a dry energy assembly, a dry gas assembly, a discharge hopper assembly, a dry slag conveying assembly, a dry sludge storing field and a control system which are combined into electromechanically integrated full-automatic drying and deodorizing complete equipment. Zero-carbon heat sources are wind energy and solar energy. In the equipment, only a star wheel mechanism enables the standing evaporation area of sludge in each cubic meter volume of a drying chamber to reach 11.6M<2> to the maximum, the gaps caused by shrinkage and distortion of wet sludge enable the evaporation area of materials to be increased in multiple, and the maximum filling rate of the materials in the drying chamber can reach more than 50%. In the practical application in April in Tianjin, the evaporation capacity of the evaporation area of each square meter of sludge is 2kg/d, the water content of the sludge is reduced to 20% after the sludge is used for four days, the efficiency is improved by more than 8-10 times as compared with natural drying, and the equipment has higher price-to-performance ratio and lower operating cost. Waste flue gas of boilers can be adopted in winter, and the wet sludge can also be temporarily stored and be dried in spring.
Description
Technical field
The present invention relates to a kind of compared with the star wheel sludge drying system that utilizes zero-carbon heat sources of the drying treatment of thickness and plasma, zero-carbon heat sources comprises wind energy and sun power, be specially adapted to the sludge treatment of sewage work, be still applicable to the drying treatment such as mineral material and grain.
Background technology
The annual mud that produces nearly 50,000 tons of above water ratio 80% of sewage work of China's operation.At existing disclosed drying bed nature dewatered sludge, need 30-45 days, operator's work under bad environment not only, and need to occupy larger soil and process cost; Because the mud of thickness and fine-grain structure is easier to fouling or bonding in equipment, fluidized drying device and the moving bed dryer of existing mainstream technology can not adapt to its requirement, and in belt dryer, during because of sewage sludge feed, volume is larger, and in the middle of the drying sludge and the later stage because its volume sharply dwindles, but maximum permission hmc is less during charging, equipment evaporation area limited, the a large amount of evaporation area of equipment does not play a role, and drier efficiency is very low.
Through experiment, I utilize squeezing solid-liquid separation device of flexible pipe not need to add any flocculating aids, moisture percentage in sewage sludge can be down to 50～60% from more than 80% dehydration, its technical scheme is open on < < fast squeezing solid-liquid separation device of flexible pipe > > number of patent application 20091017966.0, but mud also needs further disposal could meet the requirement of environmental protection and Sustainable development, more than 70% mud of China is landfilled at present, compost from now on, soil utilizes, the disposal ratio of drying and incineration increases fast, high-moisture percentage causes stacking place to be increased, trucking costs increases, landfill expense increases, yeast phase length and the anhydration and incineration energy consumption of compost treatment strengthen, if can be significant with the water ratio of lower investment and running cost reduction sludge cake when sludge treatment is disposed.
If utilize simply higher petrochemical industry mass-energy source as thermal source, cost increases, equipment is complicated, if can for water ratio dehydration be down to 60% left and right in becoming the mud of shell sclerosis criticality to design a kind of drying plant and technique, and this technical scheme can preferentially be utilized natural wind energy and the sun power of the low temperature of cost free, reduce equipment manufacturing cost, raise the efficiency, use the senior energy supplementing as atrocious weather, most important for human kind sustainable development, this is the problem solving in the urgent need to industry techie.
Summary of the invention
For above many disadvantages, the present invention proposes and solve in-problem technical scheme.The equipment work principle that the present invention proposes is based on water ratio, to be down to that to become after 60% sludge filter cake dehydration thick be the sheet of 6～10 millimeter, the shallow top layer of sheet dewatered sludge has reached one-tenth shell sclerosis criticality, if further mummification, the hardness on shallow top layer can increase faster, and the contraction inequality of sheet dewatered sludge makes the distortion of mud cake generation any direction, the mud cake compared with duricrust of distortion increases its ventilation property in moisture eliminator greatly.At dewatered sludge, enter the moisture eliminator initial stage and prevent that it is bonding, in whole moisture eliminator process, constantly make the unordered rolling up and down of sheet dewatered sludge, the contact area of sheet dewatered sludge and drying medium keeps larger ratio, the shallow top layer moisture that is exposed to the mud of drying medium becomes dry shallow top layer with speed evaporation faster, although the moisture of its heart portion of the mud after rolling is to the dry shallow top layer infiltration not necessarily exposing, after water balance, mud once has larger ratio to contact with drying medium again in rolling upper, go round and begin again, make the mutual balance of moisture of mud inside and outside and constantly lowered dry.According to mud feature can blending when the sewage sludge feed the unusual harder tabular mud cake of any distortion of mummification, impel the ventilation property of mud in moisture eliminator greatly to increase, improve drying efficiency.
Star wheel sludge drying system mainly comprises that wet mud stores field, raw material dispensing assembly, tower body structure framework, star-wheel throttling is dried assembly, star-wheel drives assembly, drying energy assembly, drying air stream assembly, discharge hopper assembly, dry slag delivery assembly, dry mud to store field and Controlling System, and comprehensively becomes automatically dry deodorizing suite of equipment of electromechanical integration; Raw material dispensing assembly comprises raw material conveying device and dosing unit; At tower body structure framework upper, be provided with dosing unit, the kiln in tower body structure framework bottom is provided with the dry assembly of star-wheel throttling, and this kiln bottom is provided with discharges hopper assembly, discharges hopper assembly and is communicated with dry slag delivery assembly; The dry assembly of star-wheel throttling is on tower body structure framework, to have multilayer star-wheel dry component, and the star-wheel dry component of every layer is to be arranged in parallel into a folded star-wheel mechanism; Each star-wheel mechanism comprises star-wheel, mandrel and disc crank; From mandrel center, extend radially out 1～3 aliform plate and form star-wheel, aliform plate adopts tabular filter opening medium, and star-wheel and disc crank are all fixed on mandrel, and the rotation center of star-wheel, disc crank and mandrel coincides together; Each star-wheel mechanism utilizes mandrel to be hinged on the horizontal beam of tower body structure framework, and star-wheel drives assembly utilization to connect the hinged disc crank of rope can make each star-wheel mechanism reciprocally swinging respectively; Drying air stream assembly is included in kiln and is provided with wind inlet channel and wind output channel, and the air channel sidewall being provided with at tower body structure framework has breather hole, the breather hole being equipped with in the end of the level of star-wheel mechanism, and these breather holes are interconnected.The tabular filter opening medium of star aliform plate can adopt sieve tray, or mesh grid, in the kiln of tower body structure framework formation bottom, utilize the star aliform plate of star-wheel mechanism one by one to make to be deposited in continuous the expansion and formation gap of thin mud cake that becomes shell sclerosis that reached together, drying medium utilizes this gap to contact with mud cake, when utilizing wind energy as the drying medium of drying energy assembly, due to cryodrying, do not need to make frequently each star-wheel mechanism reciprocally swinging, the frequent reciprocally swinging of star-wheel mechanism stops up the mobile gap of drying medium by making mud become broken small-particle, and this will affect the evaporation of moisture, be recommended in fixing 2～3 the uniform star aliform plates of mandrel of star-wheel mechanism, if the star aliform plate of certain layer of adjacent star-wheel mechanism all in horizontality and gap hour, after 45～90 ° of each rotations, only by the mud cake upset in the fan section of star aliform plate adjacent on star-wheel mechanism, and by gravity and shake, fall below to reduce the fragmentation of mud as far as possible, another of adjacent star-wheel mechanism is up to the standard state again and stops the mud cake free-falling on top star aliform plate, therefore set the interval time of the reciprocally swinging of star-wheel mechanism, can well control the translational speed of mud cake in kiln, meet mud cake moisture and evaporate the required time.
Dosing unit is to adopt the dry assembly of star-wheel dispensing or balladeur train pusher.Dosing unit is for the shadow area with the average the first layer star-wheel dry component that is distributed in the dry assembly of star-wheel throttling of stable speed by the mud entering, dosing unit can have many designs, the rotating disc type dosing unit that for example many moisture eliminators are conventional, push-plate type dosing unit.The dry assembly of star-wheel dispensing and the dry assembly structure of star-wheel throttling as a kind of dosing unit are approximate, are only that the axial rotary length of the star-wheel mechanism of every layer of star-wheel dry component from bottom to top reduces successively.The dry assembly of star-wheel dispensing has following advantage, and 1, there is no the rotatable parts of complex precise, simple in structure, install easily; 2 dispensing speed control are simple; 3, have preferably functions/drying, the raw material that is conducive to enter kiln becomes shell sclerosis in advance, is beneficial to form ventilative gap in mud; 4, star-wheel mechanism upset drop type feed is minimum to softer mud breakage degree.In order to prevent that raw material from delivering into dosing unit excessive velocities, stores from surrounding overflow and, can take two methods to avoid, the first utilizes sensor to control piling height, it two is to go along with sb. to guard him anti-overflow net in the surrounding of dosing unit, in order to utilize, wind energy is dry does not recommend to go along with sb. to guard him spill plate, when there being the broken mud of minute quantity to overflow, can taking other way to collect and process.Also a kind of dosing unit is to be provided with balladeur train pusher on the dry assembly of star-wheel throttling top, balladeur train pusher comprises guide rail, push pedal assembly and fluid driven cylinder, the a pair of guide rail being parallel to each other is fixed on tower body structure framework, push pedal assembly can slide front and back on guide rail, and the piston rod of fluid driven cylinder and push pedal assembly connect.This dosing unit is simple in structure, but the core of stockpile does not have water separation capability, applicable more dry wet mud class material.
The breather hole in the air channel adjacent with star-wheel mechanism is provided with and regulates distributing air damper and open and close regulating mechanism.Because air quantity and core that the sludge drying of showing up the windward side in star-wheel dispensing dehumidification system and day is required are variant with other position, it is necessary utilizing baffle plate to regulate air quantity.
A scheme of drying energy assembly is to adopt wind energy guiding structure, and wind energy guiding structure is around tower body structure framework surrounding, to be provided with the blade of wind gathering wheel, and the blade of wind gathering wheel is connected on tower body structure framework and symmetrical its vertical center.Wind energy guiding structure utilizes wind gathering wheel can make the wind speed in kiln improve 30% left and right by collecting air quantity compared with large hydraucone in theory, if the blade of wind gathering wheel adopts lower-cost thin flexible materials, the curvature of blade changes and has better cage wind effect with blast.Can reach insulation with the blade parcel drying tower of wind gathering wheel in the winter time, utilize blower fan and the auxiliary thermal source mummification raw material of drying air stream assembly.Because constantly all there is afloat variation in natural wind direction, because the blade of wind gathering wheel is symmetrical initial point on horizontal plane, for any variation of wind direction, can adapt at any time, at least guarantee that kiln You Sange district can blow to.
Another scheme of drying energy assembly is to adopt sun power guiding structure, and sun power guiding structure is to be provided with rainproof light-passing board at the top of tower body structure framework, and the blade of wind gathering wheel adopts light transmissive material, for example high-density polyethylene material, or glass.Utilize sun power can make the raw material of star-wheel dispensing dehumidification system on drying tower top compared with rapid hardening.The feature of this structure is can adapt to the variation of morning and evening sun lights firing angle.
Drying air stream assembly is at air inlet duct entrance, to add gas blower to form air inlet system.When load is larger, can utilize the air intake strengthening mummification material of drying air stream system.
Another scheme of drying energy assembly is to add airheater before the air inlet duct entrance of drying air stream assembly, the thermal source that airheater adopts Mineral Transformation heat energy system to produce.In the winter time or load can utilize the airheater heating air intake dewatered sludge of drying air stream system when larger.
As the further scheme of drying air stream system, the outlet of the exit duct of the induced draft fan of described drying air stream system adds cleaning apparatus.Cleaning apparatus can adopt wet dedusting or the dry method dust of prior art, and dry method dust can adopt sack cleaner.
As the further scheme of drying air stream system, the ducting outlet of drying air stream assembly adds induced draft fan and is set as exit duct, forms exhaust system.Mud compared with the thermal capacitance generation foul smell that easily ferments, utilizes induced draft fan to be convenient to further administer odor pollution at weather.
As the further scheme of drying air stream system, the outlet of the exit duct of described drying air stream assembly adds odor removal.Odor removal can adopt the wet bio deodorizing of prior art, or ozone deodorizing.
As the further scheme of drying tower, described drying tower is between dosing unit and dry slag delivery assembly, to be provided with the dry slag back-mixing device of part.Back-mixing device can be metering conveyor or mix device.Very easily bonding and lose or reduce ventilation property compared with high raw material for water ratio, by screening, an a small amount of larger tabular dry mud cake to be sneaked in raw material again, tabular dry mud cake plays to build bridge has accelerated the process of mummification with the effect that contacts wet cake adsorption moisture.The mud raw material that water ratio is lower does not need back-mixing.Back-mixing ratio is generally below 20%.Mix device and can adopt rotary mixer.If carry two kinds of material delivery accurately to the dosing unit with the function mixed metering, balladeur train pusher for example, the reciprocal cloth of the push pedal assembly by balladeur train pusher, also can play mix and blend effect.
The drying method for sludge of native system comprises the following steps:
1) mud that will wet is inputted dosing unit by raw material conveying device, dosing unit is spread in wet mud above the first floor star-wheel dry component of the dry assembly of star-wheel throttling uniformly, the pressure fluid timing of air compressor machine or Hydraulic Station drives star-wheel to drive assembly, star-wheel drives assembly utilization to connect the hinged disc crank of rope can make each star-wheel mechanism reciprocally swinging respectively, when the star-wheel upset of star-wheel mechanism, mud is dispensed onto on lower one deck star-wheel dry component; Natural wind enters between interior each layer of star-wheel dry component of kiln or in the gap between star-wheel mechanism and mud, the moisture heat exchange in natural wind and wet mud, takes away the moisture that this mud is evaporated; By that analogy, the dewatered sludge that mud becomes water ratio to be less than 30% after every layer of star-wheel dry component of the dry assembly of star-wheel throttling is dry, dewatered sludge enters in dry slag delivery assembly; At the water ratio of wet mud that enters dosing unit, lower than 55% time, dewatered sludge is input to dry mud and stores; If at the water ratio of wet mud that enters dosing unit higher than 72 o'clock, wherein a part is transported in dry slag back-mixing device and mixes with the wet mud that enters dry slag back-mixing device, avoid mud to occur " gluing phase ", be input to auxiliary wet drying sludge in dosing unit, another part is input to dry mud and stores field in order to recycling again; When natural wind speed is less than 0.5 meter per second, gas blower enters kiln by high wind by air inlet duct, adjusting distributing air damper and breather hole;
2) when local wind speed is greater than 5 meter per second, stop blower fan;
3) when being less than 0 ℃ when ground temperature, the blade of Universal wind wheel is turned back and wraps up dosing unit and the dry assembly of star-wheel throttling, start air inlet system, the star-wheel mechanism blowing to kiln;
3) when being less than 0 ℃ when ground temperature, the blade of Universal wind wheel is turned back and wraps up dosing unit and the dry assembly of star-wheel throttling, start exhaust system, the air between the star-wheel mechanism of suction dried chamber;
4) when being less than 10 ℃ when ground temperature, by air inlet duct, input hot blast;
5) when mud generation foul odour, start exhaust system, induced draft fan is transported to kiln air after odor removal is processed and discharges;
6), while needing the further reduction of moisture percentage in sewage sludge or fast reducing to 10% following, utilize the base plate of flat-bottom bin to pass into hot fluid medium; Start air inlet system, by air inlet duct, input hot blast;
7) when leeward to the air velocity in certain region of kiln when lower, can be by regulating the independent air feed of distributing air damper;
8) at kiln entrance, go out to arrange material sensor, when solid accumulation is higher, stop feed.
When back-mixing, trommel screen is picked out relatively large dry tabular mud cake, and recycling measuring apparatus scatters it on taper pinnacle of a pagoda that wet mud in taper pinnacle of a pagoda or balladeur train pusher top of the dry assembly of star-wheel dispensing piles up by raw material conveying device with suitable flow.
When adopting the dry assembly of star-wheel dispensing, can by connecting rod, drive separately with fluid driven cylinder the star-wheel mechanism of windward side and upper and lower a string star-wheel dry component that show up day of the dry assembly of star-wheel dispensing with speed reciprocating swing faster; With fluid driven cylinder, by connecting rod, drive the star-wheel mechanism of the core of upper and lower a few string and several groups of dry assemblies of star-wheel dispensing.
Windward side, day that show up by the motorized valve of pressure fluid system, control respectively with the speed of star-wheel mechanism reciprocating swing core, make velocity of evaporation faster material with speed faster, move down.Embodiment is shown in system and the technical process of the work of supporting star wheel sludge drying tower, by PLC sequence control system, can go round and begin again and automatically perform above-mentioned mummification working routine.
The mud stench concentration that is in operation wetter is larger, utilizes the odor removal that the ducting outlet of the induced draft fan of drying air stream assembly adds to address this problem; At natural energy resources, can not meet mummification requirement, utilization adds airheater and can well address this problem before the entrance of the air channel of drying air stream assembly.
The mud of sewage work general organic matter after over dry accounts for 50% left and right, and mud solid content is 35%～45% time, and calorific value is 4.8～6.5MJ/kg, can self-sustaining burning, conventionally directly connect burning process below.Dewatered sludge can be used as soil improvement agent, fertilizer, rubbish overburden soil, or as cement kiln, when power station and incinerator fuel, mud solid content is increased to 80%～95%, if utilize the cost that this equipment can be very low that mud solid content is increased to 90%, as its calorific value of fuel, be equivalent to 50% of standard coal, because mud in squeezing in early stage does not add any flocculating aids except polymeric flocculant, iron(ic) chloride for example, in burning, greatly reduced the pollution to the corrosion of equipment and atmospheric environment, fuel as the higher forward calorific value of cost performance is well received, existing market price can reach 60 yuan～80 yuan/ton, this price can support mud utilize this equipment by water ratio from the 60% large portion expense of being down to 10% drying and other treatment.
Rule of thumb, the moisture steam capability of mud exposed surface is 75% of local free-water level steam output, take Beichen District, Tianjin as example, and average annual free-water level steam output is 1777.7 millimeters.Account for 37% spring; Account for 35% summer; Account for 19% autumn; Account for 9% winter.Year sunshine time 2470～2900 hours, annual the longest with sunshine in May, total radiation is also maximum.In 1 year, 7,8 monthly mean relative humidities are maximum, can reach 80% left and right.Tianjin annual mean wind speed is 1.9～4.3 meter per seconds, and owing to affected by monsoon, wind is obvious with seasonal variation.Winter northwest wind prevailing, spring many southwester, summer southeaster prevailing, autumn variable direction.Year, maximum wind directions were southwester.In 1 year, Windy Days is maximum spring, and mean wind speed is maximum, and take second place winter, and summer, mean wind speed was minimum.With the annual zero carbon input of this this equipment of data, can reach 200～280 days working time, the effect of energy-saving and emission-reduction is remarkable.If 1-2 month mud storage facilities is set in technique, at atrocious weather, store mud raw material, just can realize the sludge drying of annual input mud zero-carbon heat sources and process.
In this equipment, only star-wheel mechanism makes the standing evaporation area maximum of mud of every cubic metre of kiln volume reach 11.6M
2, the space of causing due to wet mud contraction distortion makes again the evaporation area of material be multiplied, and kiln material peak filling rate can reach more than 50%, according to moisture steam capability in experiment mud, is 75% of free-water level steam output.In the actual use of Efficiency in Buildings in Tianjin Area April, every square metre of mud evaporation area steam output be 2kg/d, the wet mud of water ratio 60% is dry by this equipment, do not need dewatered sludge back-mixing, envrionment temperature is 22 ℃ by day, relative humidity 70%, normal sunshine, mean wind speed 2 meter per seconds, mud is down to 25% with four days water ratio, and more natural mummification is raised the efficiency more than 8～10 times.The specific investment cost of this equipment is lower than 1.5 ten thousand yuan/ton the mud of water ratio 80% (press conversion), with the specific investment cost that early stage, squeezing system added up to lower than 3.5 ten thousand yuan/ton (mud of water ratio 80%).Process the specific investment cost of the existing sludge drying technique of identical material, for example spray dried turns to 100,000 yuan/ton, generating multifuel combustion is 80,000 yuan/ton, biological dewatered is 100,000 yuan/ton, and other comprehensive anhydration system is 10～250,000 yuan/ton, apparent, the sludge drying technique that compares other, native system energy-saving and emission-reduction, reduce to process with the running cost of disposing and reduce, and investment reduces, economic and social profit is remarkable.
This equipment is having wind, or does not need to input separately petrochemical industry heat energy while using under sunlight, and operation priming cost is mainly the expense that star-wheel mechanism drives, and cost is very cheap.Because winter temperature is lower, mud can be preserved at low temperatures, be more conducive to drying treatment the season taking a turn for the better at temperature by freezing treatment, recommend the ability of wet mud storage field below 2～March.If must use this equipment in the winter time, adoptable mineralising thermal source is the useless flue gas of power plant or hotblast stove warm braw.
The disposable energy of tellurian mineralising is the non-renewable resource of finite sum, and existing sludge drying technique often all needs to expend a large amount of precious resources, if take low-carbon technology by mud fuel made, and fuel value is greater than or equal to cost of manufacture, to be that merit is being worked as generation, the contribution of profit is in the future thousands of years.Utilize wind energy and sun power to make us approach this target as the zero-carbon heat sources of star wheel sludge drying system, even if the time is slightly longer and historical long river is compared also extremely of short duration.
Star wheel sludge drying system of the present invention beneficial effect is compared with prior art:
1, adopt star-wheel mechanism to increase mud evaporation area, utilize the mud of the lamellar distortion of back-mixing mummification that the evaporation area of mud is increased greatly, improved drying efficiency;
2, the manufacturing process of star-wheel mechanism is simple, and the cost of unit drying area reduces greatly;
3, the installation of star-wheel mechanism, safeguards simply, changes consumable accessory easy;
4, star-wheel mechanism does not have the rotatable parts of complex precise, and work-ing life is higher, can realize annual zero carbon input, and dry running cost significantly reduces;
5, drying tower designs simplification, thus the metal consumption of processed in units amount is reduced, relatively the dehumidification system specific investment of prior art is lower, and cost performance is high, and what be more conducive to that equipment does is very tall and big, thereby realize ultra-large processing scale, produces;
6, operation easier reduces, can adapt to the variation of wind direction and wind-force size, can adapt to the variation of solar radiation angle, the variation of the temperature level that can conform, can adapt to and process the variation that load sharply increases, can adapt to the variation of low temperature and wet weather, rainproof lightning protection, without blast, wait unsafe factor that produces, can automatic production.
Accompanying drawing explanation
Fig. 1 is the shaft side figure that shows drying tower, and dosing unit is to adopt the dry assembly of star-wheel dispensing, discharges tapered bucket and endless belt conveyor that hopper assembly adopts gravity dumping;
Fig. 2 is the frontview of Fig. 1;
Fig. 3 is the vertical view of Fig. 1;
Fig. 4 is the process flow sheet of star wheel sludge drying system;
Fig. 5 is the shaft side figure that shows drying tower, and dosing unit is to adopt balladeur train pusher dispensing assembly, discharges the employing of hopper assembly balladeur train pusher dispensing assembly and Shaftless screw conveyor are set in flat bucket;
Fig. 6 is the shaft side figure of the dry assembly of star-wheel throttling;
Fig. 7 is the shaft side figure that adopts the dry assembly dosing unit of star-wheel dispensing;
Fig. 8 is the plate star-wheel 1a shaft side figure in Fig. 7;
Fig. 9 is the star-like star-wheel 1b shaft side figures of four jiaos in Fig. 7;
The star-like star-wheel 1c shaft side figure of triangle in Figure 10 Fig. 7;
The cross-sectional view of the plate star-wheel 1d of two aliform plates of Figure 11;
The cross-sectional view of the plate star-wheel 1f of tri-aliform plates of Figure 12;
Figure 13 is the axonometric drawing that the star-wheel of a string three star-wheel 1c of reveal competence drives assembly, for the ease of observing two star-wheels of wherein clamping, temporarily cancels, and it is larger that the radial dimension of disc crank becomes;
Figure 14 shows in Fig. 1 to enter to arrange, air channel, is provided with the discharge hopper assembly shaft side figure of balladeur train pusher in Fig. 5 in the bottom of flat-bottom bin;
Figure 15 is the shaft side figure of the dosing unit of the employing balladeur train pusher in Fig. 5;
Figure 16 is the cross-sectional view of the push pedal assembly 33a of Figure 15;
Figure 17 is the shaft side figure of discharging the balladeur train pusher of hopper assembly in Fig. 5;
Figure 18 is the cross-sectional view of the push pedal assembly 33b of Figure 17;
Figure 19 is the vertical view of Fig. 1, is provided with the blade of uniform 8 wind gatherings wheel around tower body structure framework surrounding;
Wherein: 1, 1a, 1b, 1c-star-wheel mechanism, the blade of 2-wind gathering wheel, 3-tower body structure framework, the 4-mud delivery assembly that wets, the rainproof light-passing board of 5-, 6-star-wheel dispensing is dried assembly, the throttling of 7-star-wheel is dried assembly, 8-is dried slag delivery assembly, 9-air draft road junction, 10a-discharges the taper magazine of hopper assembly, 10b-discharges the flat magazine of hopper assembly, 11-air intake road junction, 12-kiln, the 13a-mud that wets, 13b-is dried slag, 14-transport trolley, 15-goes along with sb. to guard him net, 16-fluid driven cylinder, 17-arm plate, 17a-jointed shaft, 18-connecting rod, 19-air inlet duct, 20-exit duct, 21-drag-line, 22-piston rod, 23, 23a, 23b, 23c, 23d, 23f-star-wheel, 24-disc crank, 25-mandrel, the tabular filter opening medium of 26-, 27-gusset, 28-node, 29-breather hole, the node of 30-connecting rod and drag-line, 31-regulates distributing air damper, the drag-line of 32-opening and closing mechanism, the drag-line hole of 32a-opening and closing mechanism, 33a-drains the oblique pusher of balladeur train of sludge silt for flat magazine, 33b-is for the balladeur train pusher of dosing unit, 34-push pedal assembly, 35-guide rail, 36-wind direction, 37-deodorizing and dirt loop, G1-material inlet passage, the dry slag outlet of G2-.
Embodiment
Below in conjunction with accompanying drawing, filtering element of the present invention is further described.
In Fig. 1～4,6～10 and 13, shown the General Implementing example 1 of drying tower and system.
In Fig. 1 and 2, show that drying tower of the present invention is whole, at Fig. 4, show star wheel sludge drying system technical process, star wheel sludge drying system mainly comprises raw material dispensing assembly, tower body structure framework, star-wheel throttling is dried assembly, star-wheel drives assembly, drying energy assembly, drying air stream assembly, discharges hopper assembly, dry slag delivery assembly 8 and Controlling System, and comprehensively becomes automatically dry suite of equipment of electromechanical integration; Raw material dispensing assembly comprises raw material conveying device 4 and dosing unit; Dry slag delivery assembly 8 connection transportation cars 14, on tower body structure framework 3 tops, be provided with dosing unit, kiln 12 in tower body structure framework bottom is provided with the dry assembly of star-wheel throttling, and this kiln bottom is provided with discharges hopper assembly, discharges hopper assembly and is communicated with dry slag delivery assembly; The dry assembly 7 of star-wheel throttling is on tower body structure framework, to have multilayer star-wheel dry component, and the star-wheel dry component of every layer is to be arranged in parallel into a folded star-wheel mechanism 1, and each star-wheel mechanism comprises star-wheel 23, mandrel 25 and disc crank 24; From mandrel center, extend radially out 1～3 aliform plate and form star-wheel 23, aliform plate adopts tabular filter opening medium 26, and star-wheel and disc crank are all fixed on mandrel, and the rotation center of star-wheel, disc crank and mandrel coincides together; Each star-wheel mechanism utilizes mandrel to be hinged on the horizontal beam of tower body structure framework 3, and star-wheel drives assembly utilization to connect the hinged disc crank of rope and makes each star-wheel mechanism reciprocally swinging respectively; Drying air stream assembly comprises blower fan and air channel, from overlooking direction, the air channel of air intake and air draft cuts off kiln be divided into Si Ge district, and the air channel sidewall being provided with at tower body structure framework 3 has breather hole 29, the breather hole 29 being equipped with in the end of the level of star-wheel mechanism, these breather holes are interconnected.
With reference to Figure 13, the breather hole in the air channel adjacent with star-wheel mechanism is provided with and regulates distributing air damper 31 and open and close regulating mechanism, open and close regulating mechanism and adopt drag-line, regulate distributing air damper 31 to be hinged on the breather hole of air channel, drag-line one end ties up to and regulates the other end on distributing air damper to pass air channel sidewall through hole 32a, and drag-line traction regulates distributing air damper can regulate the circulation area of breather hole.
With reference to figure 3, described drying energy assembly is to adopt wind energy guiding structure, wind energy guiding structure is around tower body structure framework 3 surroundings, to be provided with the blade 2 of four uniform wind gathering wheels, the blade of wind gathering wheel is connected on tower body structure framework and symmetrical its vertical center, and blade adopts high-density polyethylene material.
Can certainly be uniform the blade of eight wind gatherings wheels.With reference to Figure 19, wind energy guiding structure is the blades 2 that have been provided with 8 wind gathering wheels uniform around tower body structure framework 3 surroundings, and wherein two blade 2a curved surfaces are arranged to upwind position, and the more symmetrical initial point of whole front face area becomes greatly like this.
With reference to figure 1-3 and 5, described drying energy assembly is to adopt sun power guiding structure, and sun power guiding structure is at the top of tower body structure framework, to be provided with rainproof light-passing board 5, and the blade of wind gathering wheel 2 adopts glass light transmissive material.
With reference to figure 4, described drying energy assembly is at the air channel of drying air stream assembly entrance, to add gas blower to be set as air inlet duct 19, forms air inlet system.
With reference to figure 4, described drying energy assembly is to add airheater before air inlet duct 19 entrances of drying air stream assembly, the thermal source that airheater adopts Mineral Transformation heat energy system to produce.This thermal source is the useless flue gas in power station.
With reference to figure 1,4 and 14, air channel 20 outlets of described drying air stream assembly add induced draft fan and are set as exit duct, form exhaust system.
With reference to figure 4 and 19, utilize the support frame of rainproof light-passing board under the eaves of rainproof light-passing board 5, the curved surface of two leeward blade 2b to be reversed and is arranged to make-position, or under the eaves of leeward rainproof light-passing board 5, door curtain 2c is set, utilize the breather hole 29 that drying tower exit duct arranges to form loop extraction foul smell as suction opening; Breather hole extraction foul smell in kiln is delivered to odor removal.Odor removal adopts biological deodorizing device.The exit duct outlet of the induced draft fan of described drying air stream assembly adds cleaning apparatus, and all the other are identical with arranging of above deodorizing.Cleaning apparatus adopts the dry method dust of prior art, and dry method dust adopts sack cleaner.
With reference to figure 4, described drying tower is between dosing unit and dry slag delivery assembly, to be provided with the dry slag back-mixing device of part, and back-mixing device adopts tromeling to mix device.
With reference to figure 4, the drying method for sludge of system, it comprises the following steps:
1) will wet mud by raw material conveying device 4 input dosing units, dosing unit is spread in wet mud above the first floor star-wheel dry component of the dry assembly of star-wheel throttling uniformly, the pressurized air start by set date star-wheel of air compressor machine drives assembly, star-wheel drives assembly utilization to connect the hinged disc crank of rope can make each star-wheel mechanism reciprocally swinging respectively, when the star-wheel upset of star-wheel mechanism, mud is dispensed onto on lower one deck star-wheel dry component; Natural wind enters between interior each layer of star-wheel dry component of kiln or in the gap between star-wheel mechanism and mud, the moisture heat exchange in natural wind and wet mud, takes away the moisture that this mud is evaporated; By that analogy, the dewatered sludge that mud becomes water ratio to be less than 30% after every layer of star-wheel dry component of the dry assembly of star-wheel throttling is dry, dry mud enters in dry slag delivery assembly 8; At the water ratio that enters the wet mud of dosing unit, be 75%, a part is transported in dry slag back-mixing device, after mixing with the wet mud that enters dry slag back-mixing device, be input to again auxiliary wet drying sludge in dosing unit, the weight of sneaking into dewatered sludge accounts for 10% of wet mud, and another part is input to dry mud and stores field; While being less than 0.5 meter per second due to daytime nature wind speed, gas blower by high wind by air inlet duct, regulate distributing air damper 31 and breather hole 29 to enter kiln; Due to when local nighttime temperature is-12 ℃, the blade of Universal wind wheel is turned back and wraps up dosing unit and the dry assembly of star-wheel throttling, start air inlet system, the star-wheel mechanism blowing to kiln; And the blade of Universal wind wheel is turned back and wraps up dosing unit and the dry assembly of star-wheel throttling, start exhaust system, the air between the star-wheel mechanism of suction dried chamber; Input hot blast by air inlet duct night; Due to mud generation foul odour, start exhaust system, induced draft fan is transported to kiln air after odor removal is processed and discharges; When leeward to kiln air velocity when lower, can be by regulating the independent air feed of distributing air damper; At kiln entrance, go out to arrange material sensor, when solid accumulation is higher, stop feed.
In Fig. 8, show a kind of star-wheel mechanism 1a scheme, star-wheel is from mandrel center, to extend radially out two aliform plate 23a, and two aliform plates are all with the tabular filter opening medium 26 of one side, to connect the gusset 27 formation horn shape sandwich plates at the back side; Two aliform plate 23a, disc crank 24 and mandrels 25 are interconnected to constitute plate star-wheel 1a.
In Fig. 9, show another star-wheel mechanism 1b scheme, star-wheel is from mandrel center, to extend radially out 3 aliform plates, the folding formation triangular interlayer of three panel shape filter opening media 26 plate 23b for one of them aliform plate, all the other two adjacent aliform plates are all to form horn shape sandwich plate 23a with the gusset 27 at the tabular filter opening medium connection of the one side back side; 3 aliform plate 23b, 23a, disc crank and mandrels are interconnected to constitute four jiaos of star-like star-wheel 1b.
In Figure 10, show also a kind of star-wheel mechanism 1c scheme, star-wheel is from mandrel center, to extend radially out 3 aliform plates, one of them aliform plate connects and composes horn shape sandwich plate 23c with the tabular filter opening medium 26 in two sides, and all the other two adjacent aliform plates are all with the tabular filter opening medium of one side, to connect the gusset 27 formation horn shape sandwich plate 23a at the back side; 3 aliform plate 23c, 23a, disc crank and mandrels are interconnected to constitute the star-like star-wheel 1c of triangle.
In Figure 11 and 12, show respectively two kinds of star-wheel schemes, though this two schemes is simple, but weak effect, consume material is heavier.
In Fig. 7, show a kind of dosing unit, dosing unit is to adopt the dry assembly 6 of star-wheel dispensing, the dry assembly of star-wheel dispensing is on tower body structure framework, to have multilayer star-wheel dry component, and the star-wheel dry component of every layer is to be arranged in parallel into a folded star-wheel mechanism 1; The axial length of the star-wheel of every layer of star-wheel dry component from bottom to top reduces successively, the dry assembly of star-wheel dispensing is as a taper tower from the appearance, in taper tower surrounding, be provided with and go along with sb. to guard him net 15, wet mud 13a is deposited in taper tower outside surface, go along with sb. to guard him that net 15 prevents mud overflow and under.
In Figure 13, show that star-wheel drives assembly, star-wheel drives assembly to comprise fluid driven cylinder 16, connecting rod 18 and drag-line 21, and fluid driven cylinder is fixed on tower body structure framework 3; The be connected with a joggle disc crank 24 of a string star-wheel mechanism of closed-loop drag-line, the crank end of each disc crank is separately fixed on the node one by one 28 of drag-line; One end of connecting rod is connected with the node of drag-line 30, the other end of arm plate 17 articulated linkage, and arm plate is fixed on piston rod 22 ends of fluid driven cylinder; Fluid driven cylinder adopts compressed air cylinder or hydraulic ram.
Described drying tower is provided with drying air stream assembly, drying air stream assembly comprises exhaust system and air inlet system, the air channel of exhaust system is 19, the air channel of exhaust system is 20, the air channel sidewall being provided with at tower body structure framework has breather hole 29, the breather hole being equipped with in the end of the level of star-wheel mechanism, these breather holes are interconnected.
With reference to figure 6 or 7, the angle of the projection of the rotation of the star-wheel mechanism of every layer of neighbouring star-wheel dry component of described drying tower is 90 °.
In Fig. 5,13,14,17 and 18, shown the General Implementing example 2 of drying tower.
Be with the difference of embodiment 1 in the present embodiment:
Dosing unit adopts on the dry assembly of star-wheel throttling top and is provided with balladeur train pusher 33b, balladeur train pusher comprises guide rail 35, push pedal assembly 34b and fluid driven cylinder 16, the a pair of guide rail being parallel to each other is fixed on tower body structure framework 3, push pedal assembly can slide front and back on guide rail, and the piston rod 22 of fluid driven cylinder connects with push pedal assembly.The several push pedals in centre of overlooking push pedal assembly are interlaced.
With reference to Figure 15 or 16, discharging the employing of hopper assembly is the flat-bottom bin being provided with in the dry assembly of star-wheel throttling bottom, the oblique pusher 33a of balladeur train is set on the base plate of flat-bottom bin, balladeur train pusher comprises guide rail 35, push pedal assembly 34a and fluid driven cylinder 16, the a pair of guide rail being parallel to each other is fixed on tower body structure framework 3, push pedal assembly can slide front and back on guide rail, the piston rod 22 of fluid driven cylinder connects with push pedal assembly, and the inclined ejecting plate of inclined ejecting plate assembly 34a and the angle of horizontal plane are 0-60 °.
Obviously, the relevant technologies feature in various embodiment can reasonably exchange and omit within the scope of rights protection.
Claims (7)
1. a star wheel sludge drying system that utilizes zero-carbon heat sources, star wheel sludge drying system mainly comprises that wet mud stores field, raw material dispensing assembly, tower body structure framework, star-wheel throttling is dried assembly, star-wheel drives assembly, drying energy assembly, drying air stream assembly, discharge hopper assembly, dry slag delivery assembly (8), dry mud to store field and Controlling System, and comprehensively becomes automatically dry deodorizing suite of equipment of electromechanical integration; It is characterized in that, it is in tower body structure framework, to be provided with multilayer star-wheel dry component from top to bottom that star-wheel throttling is dried assembly (7), the star-wheel dry component of every layer is to be arranged in parallel into a folded star-wheel mechanism (1), and each star-wheel mechanism comprises star-wheel, mandrel and disc crank; From mandrel center, extend radially out 1～3 aliform plate and form star-wheel, aliform plate adopts tabular filter opening medium, and star-wheel and disc crank are all fixed on mandrel, and the rotation center of star-wheel, disc crank and mandrel coincides together; Each star-wheel mechanism utilizes mandrel to be hinged on the horizontal beam of tower body structure framework; Star-wheel drives assembly utilization to connect the hinged disc crank of rope and makes each star-wheel mechanism reciprocally swinging respectively; Drying energy assembly is to adopt wind energy and/or sun power as the guiding structure of zero-carbon heat sources, wind energy guiding structure is around tower body structure framework (3) surrounding, to be provided with the blade (2) of wind gathering wheel, the blade of wind gathering wheel is connected on tower body structure framework and symmetrical its vertical center, sun power guiding structure is at the top of tower body structure framework, to be provided with rainproof light-passing board (5), and the blade (2) of wind gathering wheel adopts light transmissive material; Raw material dispensing assembly comprises raw material conveying device (4) and dosing unit; At tower body structure framework upper, be provided with dosing unit, the kiln (12) in tower body structure framework bottom is provided with the dry assembly of star-wheel throttling, and this kiln bottom is provided with discharges hopper assembly, discharges hopper assembly and is communicated with dry slag delivery assembly; Drying air stream assembly comprises blower fan and air channel, and the air channel sidewall being provided with at tower body structure framework (3) has breather hole (29), in the end of the level of star-wheel mechanism, is equipped with breather hole (29), and these breather holes are interconnected.
2. the star wheel sludge drying system that utilizes zero-carbon heat sources according to claim 1, is characterized in that, the breather hole in the air channel adjacent with star-wheel mechanism is provided with and regulates distributing air damper (31) and open and close regulating mechanism (32).
3. the star wheel sludge drying system that utilizes zero-carbon heat sources according to claim 1, is characterized in that, described drying air stream assembly is to add gas blower at air inlet duct (19) entrance, forms air inlet system.
4. the star wheel sludge drying system that utilizes zero-carbon heat sources according to claim 3, it is characterized in that, drying energy assembly also adds airheater before the air inlet duct entrance of drying air stream assembly, the thermal source that airheater adopts Mineral Transformation heat energy system to produce.
5. the star wheel sludge drying system that utilizes zero-carbon heat sources according to claim 1, is characterized in that, the ducting outlet of described drying air stream assembly adds induced draft fan and is set as exit duct, forms exhaust system.
6. the star wheel sludge drying system that utilizes zero-carbon heat sources according to claim 5, is characterized in that, exit duct (20) outlet of described drying air stream assembly adds odor removal; Utilize the support frame of rainproof light-passing board under the eaves of rainproof light-passing board (5), the curved surface of leeward two blades (2b) to be reversed and is arranged to make-position, or under the eaves of leeward rainproof light-passing board (5), door curtain (2c) is set, utilize the breather hole (29) arranging on exit duct as suction opening, to form the loop of extracting foul smell.
7. the star wheel sludge drying system that utilizes zero-carbon heat sources according to claim 1, it is characterized in that, described star wheel sludge drying system is between dosing unit and dry slag delivery assembly, to be provided with the dry slag back-mixing device of part, and back-mixing device is apron quantitive conveyor or mixes device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010223664.6A CN101891364B (en) | 2010-07-12 | 2010-07-12 | Star wheel sludge drying system utilizing zero-carbon heat sources |
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| CN201010223664.6A CN101891364B (en) | 2010-07-12 | 2010-07-12 | Star wheel sludge drying system utilizing zero-carbon heat sources |
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| CN109231779B (en) * | 2018-10-07 | 2023-10-31 | 浙江诺曼环保工程技术有限公司 | Intelligent sludge dehumidifying and drying device |
| CN111535492A (en) * | 2020-05-15 | 2020-08-14 | 中国建筑第八工程局有限公司 | Large-tonnage steel beam inhaul cable pressing block clamping type combined node and method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1092387A (en) * | 1993-03-13 | 1994-09-21 | 洪相五 | Device for dehydrating sladge waste |
| CA2690003A1 (en) * | 2007-06-04 | 2008-12-11 | Gijsbert Docters Van Leeuwen | System and method for drying a water-containing substance |
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2010
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1092387A (en) * | 1993-03-13 | 1994-09-21 | 洪相五 | Device for dehydrating sladge waste |
| CA2690003A1 (en) * | 2007-06-04 | 2008-12-11 | Gijsbert Docters Van Leeuwen | System and method for drying a water-containing substance |
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