CN102964041A - Sludge burning treatment device and burning treatment method using device - Google Patents
Sludge burning treatment device and burning treatment method using device Download PDFInfo
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- CN102964041A CN102964041A CN2012105110117A CN201210511011A CN102964041A CN 102964041 A CN102964041 A CN 102964041A CN 2012105110117 A CN2012105110117 A CN 2012105110117A CN 201210511011 A CN201210511011 A CN 201210511011A CN 102964041 A CN102964041 A CN 102964041A
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- 239000010802 sludge Substances 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000000843 powder Substances 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000003756 stirring Methods 0.000 claims abstract description 33
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims description 19
- 230000003028 elevating effect Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 15
- 238000005406 washing Methods 0.000 claims description 15
- 239000012634 fragment Substances 0.000 claims description 13
- 241000894006 Bacteria Species 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000003672 processing method Methods 0.000 claims description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- 238000013022 venting Methods 0.000 claims description 6
- 239000004566 building material Substances 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 5
- 239000010881 fly ash Substances 0.000 claims description 5
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 239000003610 charcoal Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 238000009832 plasma treatment Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000003607 modifier Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 16
- 238000002485 combustion reaction Methods 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 210000002421 cell wall Anatomy 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000000855 fermentation Methods 0.000 description 3
- 230000004151 fermentation Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000002956 ash Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Classifications
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Treatment Of Sludge (AREA)
Abstract
The invention discloses a sludge burning treatment device and a burning treatment method using device, and relates to the treatment of the sludge. The treatment device is provided with a sludge stirring device, a sludge powder extruding device, a sludge forming machine, a feeding device, a burning furnace, a gas inlet device, a discharging conveyor and an off-gas collection and treatment device, wherein the sludge forming machine is provided with a lower hopper, a roller wheel, a motor, a discharging hopper and a rack; the feeding device is provided with a feeding conveyor, a hopper, a feeding motor, a spiral lifter, a lifting rod, a spiral sliding way, a falling limit shaft sleeve, a falling limit switch, a lifting limit switch and a lifting limit shaft sleeve; and the burning furnace is provided with a furnace body, and a grate tube is arranged in the furnace body. The burning treatment method comprises the following steps of: mixing the sludge with a modifier, and stirring to obtain the sludge powder, wherein the water content of the sludge powder is less than 35%; standing; sending the sludge powder in the extruding device after the water content is reduced to less than 30% to obtain sludge pieces, and sending the sludge pieces to the sludge forming machine to obtain sludge blocks; sending the sludge blocks to the burning furnace to burn, and recycling the residue after burning or adopting the residue as raw materials for buildings; and collecting and treating the off-gas.
Description
Technical field
The present invention relates to the processing of mud, especially relate to a kind of mud burning treatment apparatus and incineration treatment method thereof.
Background technology
Usually the water ratio of the mud of sewage work is about below 85%, about 1000 kilocalories of mud self calorific value generally speaking, and organic content is more than 50%.
Chinese patent CN2702185 discloses a kind of mud burning treatment apparatus, comprises incinerator main body system, sludge dry system, mud granulizing system and steam and condensate system.Granulation in tablets press behind the dry ash mix and blend that pretreated primary sludge and incinerator are discharged then at the drying installation inner drying, is sent in the incinerator again and is burned.The water vapour that produces in the drying installation is sent into the condensing works condensation, and the condensed water that condensation is got off is discharged through sewage lagoon, and the gas that does not condense advances the incinerator burning.The tail gas that incinerator produces enters atmosphere behind purifying and dedusting.Adopt closed cycle between the recirculation heater in drying installation and the incinerator.The recirculation heater outlet is provided with water coolant temperature control circuit system.
Chinese patent CN102140002A discloses the semi-oriented incineration treatment method of a kind of closed machinery, step 1, and sludge modification utilizes properties-correcting agent to reduce the bonding force of water in viscosity, mud and the mud of mud and the intensity of mud granule; Step 2, extruding sludge dewatering makes the water content of mud be reduced to 75%, becomes loose particulate state mud; Step 3 adopts the further dewatered sludge of used heat, makes the water content of mud be reduced to 55%; Step 4 is that 55% mud and coal mix with the resulting water content of step 3; Step 5, the mixture of mud-coal that step 4 is obtained is delivered to boiler combustion, its tail gas is through dedusting, after desulfurization is processed as the step 2 waste heat source; Step 6 will be through the remaining slag of step 5 burning sludge, coal ash as material of construction and additive.
Chinese patent CN1669961 discloses a kind of sludge incineration processing method and Disposal System of Mud Burning.The method is to be that 75%～85% dewatered sludge is delivered in the combustion chamber of circulating fluidized bed with water ratio, and the dusty gas that dewatered sludge produces in storage is sent in the combustion chamber of circulating fluidized bed, and dewatered sludge, dusty gas burn with coal; Burning the tail gas that produces discharges after treatment.This system has circular fluid bed, fly-ash separator and mud storeroom, utilize spiral pump that dewatered sludge is burned in sludge carrier pipe and sludge spray head are injected into the combustion chamber of circulating fluidized bed, utilize blower fan that the dusty gas of sludge creation is delivered in the combustion chamber and burn; This system can also have steam blowing equipment and high pressure water cleaning device, cleans spiral pump, sludge carrier pipe and sludge spray head with not timing, prevents its dehydrated sludge blockage.
Chinese patent CN2787656 discloses a kind of sludge incineration treatment facility.This equipment has circular fluid bed, fly-ash separator and mud storeroom, utilize spiral pump that dewatered sludge is burned through sludge carrier pipe is injected into the combustion chamber of circulating fluidized bed from sludge spray head in, the dusty gas that utilizes blower fan that dewatered sludge is produced in storage is pumped to the combustion chamber and is burned; This equipment can also have steam blowing equipment and high pressure water cleaning device, cleans spiral pump, sludge carrier pipe and sludge spray head with not timing, effectively prevents its dehydrated sludge blockage.
Chinese patent CN1931752 discloses the wet mud particle drying, incinerating and treating device of a kind of circulating fluidized bed, by the circulating fluidized bed incinerator burner hearth, the High Temperature Gas solid separator, back-end ductwork, the grey distribution valve of heat, the mud dispersing device, particle drier, the moisture eliminator exhaust-gas treatment system forms, the drying and incineration of wet mud concentrated in the single device carry out, wet mud returns the burner hearth burning with circulating ash finish mummification in particle drier after, make the wet contained large quantity of moisture of mud not enter back-end ductwork with the burner hearth high-temperature flue gas, but draw with the particle drier fluidizing agent, reduce the calorific loss of system; The particle drier exhaust recycles or sends into burner hearth as the particle drier fluidizing agent and burn after the dedusting dehumidifying, does not discharge the gas of peculiar smell in the treating processes.
Summary of the invention
The object of the invention is to provide a kind of mud burning treatment apparatus and incineration treatment method thereof.
Described mud burning treatment apparatus is provided with sludge stirring device, mud powder squeezing device, mud forming machine, feeding unit, incinerator, diffuser, outfeed belt conveyor and exhaust collection treatment unit; Described sludge stirring device, mud powder squeezing device, mud forming machine, feeding unit, incinerator are connected with outfeed belt conveyor and are connected;
Described mud forming machine is provided with hopper, to running roller, motor, discharge bucket and frame, described hopper is located at the top to running roller, and running roller is located on the motor shaft, discharge bucket is located at the running roller below; Hopper, running roller and motor are located on the frame; Described surface to running roller is provided with female, female bottom to being provided with groove in the running roller, in groove, be provided with nest axle piston rod, nest axle upper cover of piston rod is established spring, is provided with limited location snap ring in nest axle piston rod bottom;
Described feeding unit is provided with feeding conveyor, hopper, charging motor, helical riser, elevating lever, spiral slide, descending spacing axle sleeve, descending spacing switch, lifting position-limit switch, upper limit limit shaft sleeve; The material outlet of feeding conveyor is located at the top of hopper, hopper is located at the open top of body of heater, helical riser is connected with motor, the top of elevating lever is screw mandrel, screw mandrel and helical riser engagement, spiral slide is located at the bottom of elevating lever, and descending spacing axle sleeve, descending spacing switch and lifting position-limit switch are located at the top of elevating lever, and upper limit limit shaft sleeve is located between screw mandrel bottom and the spiral slide;
Described incinerator is provided with body of heater, is provided with furnace grate tube in the described body of heater, and upper of furnace body is provided with vapor pipe, and bottom of furnace body is provided with discharge port, and the body of heater body of wall is provided with vision slit; Described furnace grate tube is at least 2 layers of hollow angle of repose furnace grate tube, described hollow angle of repose furnace grate tube is that leg-of-mutton open tube forms by the cross section, the inlet pipe of hollow angle of repose furnace grate tube is connected with the air outlet of diffuser, can be provided with air valve between described hollow angle of repose furnace grate tube and the inlet pipe;
The mud powder outlet of described sludge stirring device is connected with the import of mud powder squeezing device, and the mud fragment outlet of mud powder squeezing device connects the hopper of mud forming machine, and the sludge bulking discharge bucket of mud forming machine taps into the feeding conveyor of materials device; Described feeding unit is located at the body of heater top of incinerator; The opening for feed of described outfeed belt conveyor docks with the discharge port of being located at bottom of furnace body;
The air outlet of described diffuser is connected with the air inlet port of furnace grate tube; The venting port of vapor pipe is connected with the inlet mouth of exhaust collection treatment unit, and the gas up to standard after the processing is by the venting port discharging of exhaust collection treatment unit.
Described female can adopt the hemisphere female, hemisphere female bottom to being provided with groove in the running roller, the radius of described revolver hemisphere female to running roller and described right radius of taking turns the hemisphere female to running roller do not wait, and form asymmetric spheroid to running roller.
Form the upper, middle and lower in the body of heater of described incinerator, described upper strata is baking zone, and the middle level is for burning layer, and lower floor is cooling layer.
Described incinerator can adopt the hollow angle of repose grate incinerator of the conjuncted multilayer of rectangle, the rectangular body of heater of the body of heater of each incinerator, and each square furnace sports association is integrated, and the inlet pipe in each incinerator is communicated with, and the vapor pipe in each incinerator is communicated with.
The internal diameter of described body of heater is preferably 1.2 ~ 1.6m, and the height of body of heater is preferably 4 ~ 6 times of body of heater internal diameter; The floor height spacing of described furnace grate tube can be 40 ~ 50cm, and the pipe of described furnace grate tube is apart from being preferably 40 ~ 50cm;
Described exhaust collection treatment unit can be provided with at least a in chemical washing device, absorbent charcoal adsorber, EM bacterium treatment unit, plasma treatment appts and the bacteria bed treatment unit etc., described chemical washing device can adopt 4 Dow Chemical washing devices, and described chemical washing can adopt respectively NaOH, KMnO
4, CaS etc.; Described bacteria bed treatment unit can adopt the treatment unit such as membrane module.
Described sludge incineration processing method adopts described mud burning treatment apparatus, and concrete steps are as follows:
1) mud is mixed with properties-correcting agent, get the mud powder after stirring, the water ratio of mud powder is placed the mud powder 3 ~ 5 days below 35% again, and the water ratio of mud powder is down to below 30%;
2) the mud powder that step 1) is obtained is sent into extrusion equipment, gets the mud fragment after the extruding;
3) with step 2) the mud fragment that obtains sends into the mud forming machine, gets sludge bulking;
4) sludge bulking after the moulding is sent into incinerator and burn, the recrement reuse after the burning or as the building materials prepared using;
5) with the exhaust collection of incinerator, behind chemical washing, enter bacteria bed and process tail gas rear discharging up to standard.
In step 1), described stirring is best through 2 stirrings, and the water ratio of mud powder adds medium coarse sand below 40% during the 2nd stirring after the 1st stirring, makes the water ratio of mud powder below 35%; Described properties-correcting agent can adopt dry mash, and described dry mash can be selected from flyash, light calcium carbonate powder, dicalcium powder, sludge incineration and process at least a in the recrement etc.; The mass ratio of described mud, dry mash, medium coarse sand can be 1: (0.7 ~ 1.2): (0.03 ~ 0.05), the water ratio of described mud can≤80%.
Mud and properties-correcting agent and medium coarse sand are respectively after 2 grades of stirrings, destroy the cell walls of mud, the mixed material of the interior free surface moisture of table of mud is absorbed, and the temperature of whipping process can reach 40 ~ 60 ℃, can volatilize about 5% moisture, make it become the about mud powder below 35% of water ratio.After be placed in the factory building 3 ~ 5 days, during can produce fermentation (about 40 ~ 60 ℃ of temperature) its moisture is volatilized naturally, its water ratio is down to below 30%.
In step 2) in, described extruding can be adopted 2 extruding, and the water ratio of described mud fragment is below 25%.
In step 3), described mud forming machine can adopt forcing machine or ball press, the volume of described sludge bulking can≤1000cm
3Described ball press preferably adopts asymmetric spheroid ball press, and the sludge bulking of gained is sludge ball, and the diameter of sludge ball is beneficial to burn less than 7cm.
In step 4), the temperature of described burning can be 800 ~ 1000 ℃, and the time of burning can be 0.5 ~ 4h.
Compare with method with existing sludge treatment device, the present invention has following outstanding advantages and technique effect:
1. adopt 2 stirrings, the 1st stirring mixes the mud of water ratio≤80% with properties-correcting agent, after stirring, make it become water ratio 40% following mud compound; Stir the adding medium coarse sand for the 2nd time, after stirring, make it become water ratio 35% following mud compound; After be placed in the factory building 3 ~ 5 days, during can produce low temperature fermentation (about 40 ~ 60 ℃ of temperature) its moisture is volatilized naturally, its water ratio is down to below 30%; Through the extruding of extrusion machine twice, its water ratio is down to below 25% again; Then enter molding device and carry out moulding (about 400 ~ 600 kilocalories of the sludge calorific value after the moulding); Then enter incinerator and burn, burning process need not to add any fuel; Recrement after the burning is surplus about 10% (not containing compound) only.Recrement be as compound reuse and mud mix (the residue recrement can be done the building materials utilization), and so recycle reaches the effect of waste recycling, has realized sludge treatment energy-saving, minimizing, innoxious, resource utilization.
2. adopt power-assisted ejection ram formula ball press or asymmetric spheroid ball press that the mud fragment is carried out moulding, the demoulding, efficient is high, effective.According to the character of mud, because mud is comprised of the reactive monomer cell, contain the organism more than 50%, and water ratio is high, light specific gravity, is a kind of pseudo-plasticity gel.Be difficult to moulding, and the difficult demoulding after the moulding, easy broken, resistance to compression extreme difference, traditional ball press can't satisfy this processing requirement, therefore the present invention adopts power-assisted demoulding nest axle piston ball press, when material entered in the pair roller ball mould, nest axle piston rod inwardly shrank under pressure; When material forming was treated the demoulding, along with pressure relieve, nest axle piston rod outwards ejected under the effect of spring, impels the smooth demoulding of sludge ball, and it is full, difficult broken to have solved a demoulding difficult problem and ball-type, can satisfy the requirement of this technique.
3. adopt elevating screws formula feeding unit, and it is set directly at the incinerator top, because mud spheroid intensity difference, easily broken, after use lifting, spiral added the structure of slideway, sludge ball can slowly enter in the burner hearth along spiral slide, and along with the increase of material in the stove, slideway progressively rises, and therefore can guarantee that material is not broken, evenly distributes in burner hearth, improve the efficient of charging, and improve ventilation effect.This device plays keying action in burning process, because mud spheroid physique is light and soft, is unable to undergo gravity and impacts, and blanking skewness, broken material stop up the slit between spheroid easily, causes burning inhomogeneously maybe can not burning.Adopt the blanking of this device, spheroid is not broken, the spheroid gap is large, ventilation effect good, guarantee the perfect combustion of material energy, improve combustionvelocity.
4. owing to adopt conjuncted incinerator with the hollow angle of repose fire grate of multilayer tracheae, so the cross section of furnace grate tube is trilateral, and the furnace grate tube bottom is provided with production well, and air can be evenly dispersed in the burner hearth.Only need add first outside the external compound, the recrement reusable edible after the burning, burning process integrates mummification, pyrolysis, carbonization, burning, finishes in same body of heater, has improved greatly the thermo-efficiency of body of heater, and burning process need not to add any fuel.Equipment is few, technical process is short, and treating processes adopts totally enclosed, does not produce dust, really reaches the effect of waste recycling, has realized sludge treatment energy-saving, minimizing, innoxious.Recrement after the burning is as the Main Function of compound: about 80 ~ 120 ℃ of oven-fresh recrement temperature, and after crushing, with the mud mix, utilize the temperature of recrement can evaporate and adsorb moisture in the mud.The hot high efficiency of body of heater, rational in infrastructure, burn thoroughly, normal pressure operation, long service life, safe and reliable to operation.
5. the proportion of the effect that adds medium coarse sand: ⑴, increase material is beneficial to moulding; ⑵ the conductive force in, the burning process; ⑶ with the sludge creation friction, destroy the mud cell walls in, stirring, the extrusion process, force out water in the table of mud (except adding in proportion for the first time, according to the demoulding and the moulding situation of spheroid, a little both replenish can).
6. sludge ball enters incinerator through feeding unit and burns, and during first burning on fire, burns layer and is positioned at bottom of furnace body, along with the passing of the time of burning, burns layer and moves to the body of heater middle part on gradually, and the slag of bottom of furnace body after burning made cooling layer; The hot gas (temperature of burning layer reaches 850 ~ 1000 ℃) that burns layer generation when burning is directly dried the mud on upper strata.According to the speed control of burning, bottom is slagged tap, burn in the middle level, feed in raw material in the upper strata, so circulation, burns incessantly.Recrement after the burning (except original compound) only remains 10%.Recrement enters first technique again and mud mixes, and unnecessary recrement can be used as the building materials utilization.Owing to be block the burning, so the dust that burning process produces is few, if any a small amount of dust, also major part is adsorbed by upper baking zone in the burner hearth.
Description of drawings
Fig. 1 is that the structure of mud burning treatment apparatus embodiment of the present invention forms synoptic diagram.
Fig. 2 is that mud burning treatment apparatus embodiment incinerator structural group of the present invention becomes schematic perspective view.
Fig. 3 is that the internal structure of mud burning treatment apparatus embodiment incinerator of the present invention forms one of synoptic diagram.
Fig. 4 is that the internal structure of mud burning treatment apparatus embodiment incinerator of the present invention forms two of synoptic diagram.
Fig. 5 is that the structure of mud burning treatment apparatus embodiment elevating screws formula feeding unit of the present invention forms synoptic diagram.
Fig. 6 is that the structure of mud burning treatment apparatus embodiment power-assisted ejection ram formula ball press of the present invention forms synoptic diagram.
Fig. 7 is that the structure to running roller among Fig. 6 forms synoptic diagram.
Fig. 8 is the left view of Fig. 7.
Fig. 9 is the A part enlarged view of Fig. 7.
Figure 10 is the B part enlarged view of Fig. 7.
Figure 11 is that the structure of the asymmetric spheroid ball press of mud burning treatment apparatus embodiment of the present invention forms synoptic diagram.
In Fig. 1 ~ 11, respectively be labeled as:
Hopper 11, to running roller 12, hemisphere female 121, to the revolver hemisphere female 1211 of running roller, to right hemisphere female 1212, groove 122, nest axle piston rod 123, spring 124, limited location snap ring 125, motor shaft 13, discharge bucket 14, the frame 15 of taking turns of running roller;
Body of heater 31, baking zone 311, burning layer 312, cooling layer 313, furnace grate tube 32, inlet pipe 321, air valve 322, vapor pipe 33, discharge port 34, vision slit 35;
Outfeed belt conveyor 4.
Embodiment
Following examples are take the mud of Xiamen sewage work as example, and its water ratio is about 80%, and mud self calorific value is about 1000～1500Kcal, and organic content is about more than 50%.
When first igniting was enabled, (for example honeycomb briquette or timber need not to add fuel again after the burning only to need tens kilograms fuel.）。
Owing to be block the burning, so the dust that burning process produces is few, if any a small amount of dust, also major part is adsorbed by upper baking zone in the burner hearth.
Referring to Fig. 1 ~ 11, described mud burning treatment apparatus embodiment is provided with sludge stirring device, mud powder squeezing device, asymmetric spheroid ball press, feeding unit 2, incinerator, diffuser, outfeed belt conveyor 4 and exhaust collection treatment unit; Described sludge stirring device, mud powder squeezing device, asymmetric spheroid ball press, feeding unit 2, incinerator are connected with outfeed belt conveyor successively and are connected;
Described asymmetric spheroid ball press is provided with hopper 11, to running roller 12, motor, discharge bucket 14 and frame 15, described hopper 11 is located at the top to running roller 12, and running roller 12 is located on the motor shaft 13, discharge bucket 14 is located at running roller 12 belows; Hopper 11, running roller 12 and motor are located on the frame 15; Described surface to running roller 12 is provided with hemisphere female 121, hemisphere female 121 bottoms to being provided with groove 122 in the running roller, be provided with nest axle piston rod 123 in groove 122, sheathed spring 124 on the nest axle piston rod 123 is provided with limited location snap ring 125 in nest axle piston rod 123 bottoms; The radius of described revolver hemisphere female 1211 to running roller 12 and described right radius of taking turns hemisphere female 1212 to running roller 12 do not wait, and form asymmetric spheroid to running roller.
Described feeding unit 2 adopts elevating screws formula feeding unit, is provided with feeding conveyor 21, hopper 22, charging motor 23, helical riser 24, elevating lever 25, spiral slide 26, descending spacing axle sleeve 27, descending spacing switch 28, lifting position-limit switch 29, upper limit limit shaft sleeve 210; The material outlet of feeding conveyor 21 is located at the top of hopper 22, hopper 22 is located at the open top of body of heater 31, helical riser 24 is connected with motor 23, the top of elevating lever 25 is screw mandrel 251, screw mandrel 251 and helical riser 24 engagements, spiral slide 26 is located at the bottom of elevating lever 25, and descending spacing axle sleeve 27, descending spacing switch 28 and lifting position-limit switch 29 are located at the top of elevating lever 25, and upper limit limit shaft sleeve 210 is located between screw mandrel 251 bottoms and the spiral slide 26;
Described incinerator is provided with body of heater 31, is provided with furnace grate tube 32 in the described body of heater 31, and body of heater 31 tops are provided with vapor pipe 33, and body of heater 31 bottoms are provided with discharge port 34, and the body of heater body of wall is provided with vision slit 35; Described furnace grate tube 32 is at least 2 layers of hollow angle of repose furnace grate tube, described hollow angle of repose furnace grate tube is that leg-of-mutton open tube forms by the cross section, the inlet pipe 321 of hollow angle of repose furnace grate tube 32 is connected with the air outlet of diffuser, can be provided with air valve 322 between described hollow angle of repose furnace grate tube 32 and the inlet pipe 321; The internal diameter of described body of heater 31 is preferably 1.2 ~ 1.6m, and the height of body of heater 31 is preferably 4 ~ 6 times of body of heater internal diameter; The floor height spacing of described furnace grate tube 32 can be 40 ~ 50cm, and the pipe of described furnace grate tube 32 is apart from being preferably 40 ~ 50cm.
The mud powder outlet of described sludge stirring device is connected with the import of mud powder squeezing device, the mud fragment outlet of mud powder squeezing device connects the hopper 11 of asymmetric spheroid ball press, and the sludge bulking discharge bucket 14 of asymmetric spheroid ball press taps into the feeding conveyor 21 of materials device 2; Described feeding unit 2 is located at body of heater 31 tops of incinerator; The opening for feed of described outfeed belt conveyor 4 docks with the discharge port 34 of being located at body of heater 31 bottoms;
The air outlet of described diffuser is connected with the air inlet port of furnace grate tube 32; The venting port of vapor pipe 33 is connected with the inlet mouth of exhaust collection treatment unit, and the gas up to standard after the processing is by the venting port discharging of exhaust collection treatment unit.
Form the upper, middle and lower in the body of heater of described incinerator, described upper strata is baking zone 311, and the middle level is for burning layer 312, and lower floor is cooling layer 313.
Described incinerator can adopt the hollow angle of repose grate incinerator of the conjuncted multilayer of rectangle, the rectangular body of heater of the body of heater of each incinerator, and each square furnace sports association is integrated, and the inlet pipe in each incinerator is communicated with, and the vapor pipe in each incinerator is communicated with.
Described exhaust collection treatment unit can be provided with chemical washing device, absorbent charcoal adsorber, EM bacterium treatment unit, plasma treatment appts and bacteria bed treatment unit etc., described chemical washing device can adopt 4 Dow Chemical washing devices, and described chemical washing can adopt respectively NaOH, KMnO
4, CaS etc.; Described bacteria bed treatment unit can adopt the treatment unit such as membrane module.
Below provide the concrete steps of the sludge incineration processing method that adopts described mud burning treatment apparatus:
1) mud is mixed with properties-correcting agent, get the mud powder after stirring, the water ratio of mud powder is placed the mud powder 3 ~ 5 days below 35% again, and the water ratio of mud powder is down to below 30%; Described stirring is best through 2 stirrings, and the water ratio of mud powder adds medium coarse sand below 40% during the 2nd stirring after the 1st stirring, makes the water ratio of mud powder below 35%; Described properties-correcting agent can adopt dry mash, and described dry mash can be selected from flyash, light calcium carbonate powder, dicalcium powder, sludge incineration and process at least a in the recrement etc.; The mass ratio of described mud, dry mash, medium coarse sand can be 1: (0.7 ~ 1.2): (0.03 ~ 0.05), the water ratio of described mud can≤80%.
Mud and properties-correcting agent and medium coarse sand are respectively after 2 grades of stirrings, destroy the cell walls of mud, the mixed material of the interior free surface moisture of table of mud is absorbed, and the temperature of whipping process can reach 40 ~ 60 ℃, can volatilize about 5% moisture, make it become the about mud powder below 35% of water ratio.After be placed in the factory building 3 ~ 5 days, during can produce fermentation (about 40 ~ 60 ℃ of temperature) its moisture is volatilized naturally, its water ratio is down to below 30%.
2) the mud powder that step 1) is obtained is sent into extrusion equipment, gets the mud fragment after the extruding; Described extruding can be adopted 2 extruding, and the water ratio of described mud fragment is below 25%.
3) with step 2) the mud fragment that obtains sends into asymmetric spheroid ball press, gets sludge bulking; Described asymmetric spheroid ball press can adopt forcing machine or ball press, the volume of described sludge bulking can≤1000cm
3Described ball press preferably adopts asymmetric spheroid ball press, and the sludge bulking of gained is sludge ball, and the diameter of sludge ball is beneficial to burn less than 7cm.
4) sludge bulking after the moulding is sent into incinerator and burn, the recrement reuse after the burning or as the building materials prepared using; The temperature of described burning can be 800 ~ 1000 ℃, and the time of burning can be 0.5 ~ 4h.
5) with the exhaust collection of incinerator, behind chemical washing, enter bacteria bed and process tail gas rear discharging up to standard.
Claims (10)
1. mud burning treatment apparatus is characterized in that being provided with sludge stirring device, mud powder squeezing device, mud forming machine, feeding unit, incinerator, diffuser, outfeed belt conveyor and exhaust collection treatment unit;
Described mud forming machine is provided with hopper, to running roller, motor, discharge bucket and frame, described hopper is located at the top to running roller, and running roller is located on the motor shaft, discharge bucket is located at the running roller below; Hopper, running roller and motor are located on the frame; Described surface to running roller is provided with female, female bottom to being provided with groove in the running roller, in groove, be provided with nest axle piston rod, nest axle upper cover of piston rod is established spring, is provided with limited location snap ring in nest axle piston rod bottom;
Described feeding unit is provided with feeding conveyor, hopper, charging motor, helical riser, elevating lever, spiral slide, descending spacing axle sleeve, descending spacing switch, lifting position-limit switch, upper limit limit shaft sleeve; The material outlet of feeding conveyor is located at the top of hopper, hopper is located at the open top of body of heater, helical riser is connected with motor, the top of elevating lever is screw mandrel, screw mandrel and helical riser engagement, spiral slide is located at the bottom of elevating lever, and descending spacing axle sleeve, descending spacing switch and lifting position-limit switch are located at the top of elevating lever, and upper limit limit shaft sleeve is located between screw mandrel bottom and the spiral slide;
Described incinerator is provided with body of heater, is provided with furnace grate tube in the described body of heater, and upper of furnace body is provided with vapor pipe, and bottom of furnace body is provided with discharge port, and the body of heater body of wall is provided with vision slit; Described furnace grate tube is at least 2 layers of hollow angle of repose furnace grate tube, described hollow angle of repose furnace grate tube is that leg-of-mutton open tube forms by the cross section, the inlet pipe of hollow angle of repose furnace grate tube is connected with the air outlet of diffuser, is provided with air valve between described hollow angle of repose furnace grate tube and the inlet pipe;
The mud powder outlet of described sludge stirring device is connected with the import of mud powder squeezing device, and the mud fragment outlet of mud powder squeezing device connects the hopper of mud forming machine, and the sludge bulking discharge bucket of mud forming machine taps into the feeding conveyor of materials device; Described feeding unit is located at the body of heater top of incinerator; The opening for feed of described outfeed belt conveyor docks with the discharge port of being located at bottom of furnace body;
The air outlet of described diffuser is connected with the air inlet port of furnace grate tube; The venting port of vapor pipe is connected with the inlet mouth of exhaust collection treatment unit, and the gas up to standard after the processing is by the venting port discharging of exhaust collection treatment unit.
2. mud burning treatment apparatus as claimed in claim 1, it is characterized in that described female adopts the hemisphere female, hemisphere female bottom to being provided with groove in the running roller, the radius of described revolver hemisphere female to running roller and described right radius of taking turns the hemisphere female to running roller do not wait, and form asymmetric spheroid to running roller.
3. mud burning treatment apparatus as claimed in claim 1, it is characterized in that described incinerator adopts the hollow angle of repose grate incinerator of the conjuncted multilayer of rectangle, the rectangular body of heater of the body of heater of each incinerator, each square furnace sports association is integrated, inlet pipe in each incinerator is communicated with, and the vapor pipe in each incinerator is communicated with; The internal diameter of described body of heater is preferably 1.2 ~ 1.6m, and the height of body of heater is preferably 4 ~ 6 times of body of heater internal diameter; The floor height spacing of described furnace grate tube can be 40 ~ 50cm, and the pipe of described furnace grate tube is apart from being preferably 40 ~ 50cm.
4. mud burning treatment apparatus as claimed in claim 1, it is characterized in that described exhaust collection treatment unit is provided with at least a in chemical washing device, absorbent charcoal adsorber, EM bacterium treatment unit, plasma treatment appts and the bacteria bed treatment unit, described chemical washing device adopts 4 Dow Chemical washing devices, and described chemical washing adopts respectively NaOH, KMnO
4, CaS; Described bacteria bed treatment unit adopts the membrane module treatment unit.
5. sludge incineration processing method is characterized in that adopting as claimed in claim 1 mud burning treatment apparatus, and the concrete steps of described method are as follows:
1) mud is mixed with properties-correcting agent, get the mud powder after stirring, the water ratio of mud powder is placed the mud powder 3 ~ 5 days below 35% again, and the water ratio of mud powder is down to below 30%;
2) the mud powder that step 1) is obtained is sent into extrusion equipment, gets the mud fragment after the extruding;
3) with step 2) the mud fragment that obtains sends into the mud forming machine, gets sludge bulking;
4) sludge bulking after the moulding is sent into incinerator and burn, the recrement reuse after the burning or as the building materials prepared using;
5) with the exhaust collection of incinerator, behind chemical washing, enter bacteria bed and process tail gas rear discharging up to standard.
6. sludge incineration processing method as claimed in claim 5, it is characterized in that in step 1) described stirring is through 2 stirrings, the water ratio of mud powder is below 40% after the 1st stirring, add medium coarse sand when stirring for the 2nd time, make the water ratio of mud powder below 35%.
7. sludge incineration processing method as claimed in claim 5 is characterized in that in step 1), and described properties-correcting agent adopts dry mash, and described dry mash is selected from flyash, light calcium carbonate powder, dicalcium powder, sludge incineration and processes at least a in the recrement; The mass ratio of described mud, dry mash, medium coarse sand can be 1: (0.7 ~ 1.2): (0.03 ~ 0.05), the water ratio of described mud can≤80%.
8. sludge incineration processing method as claimed in claim 5 is characterized in that in step 2) in, 2 extruding are adopted in described extruding, and the water ratio of described mud fragment is below 25%.
9. sludge incineration processing method as claimed in claim 5 is characterized in that in step 3), and described mud forming machine adopts forcing machine or ball press, the volume≤1000cm of described sludge bulking
3Described ball press preferably adopts asymmetric spheroid ball press, and the sludge bulking of gained is sludge ball, and the diameter of sludge ball is less than 7cm.
10. sludge incineration processing method as claimed in claim 5 is characterized in that in step 4), and the temperature of described burning is 800 ~ 1000 ℃, and the time of burning is 0.5 ~ 4h.
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