CN100447489C - Wet mud burning treatment apparatus with compound dryer - Google Patents
Wet mud burning treatment apparatus with compound dryer Download PDFInfo
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- CN100447489C CN100447489C CNB2005101029667A CN200510102966A CN100447489C CN 100447489 C CN100447489 C CN 100447489C CN B2005101029667 A CNB2005101029667 A CN B2005101029667A CN 200510102966 A CN200510102966 A CN 200510102966A CN 100447489 C CN100447489 C CN 100447489C
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- combined dryer
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- overfall
- burner hearth
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- 150000001875 compounds Chemical class 0.000 title description 2
- 239000010802 sludge Substances 0.000 claims abstract description 44
- 239000007787 solid Substances 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 55
- 238000005192 partition Methods 0.000 claims description 44
- 239000000843 powder Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 19
- 239000003245 coal Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 241001572175 Gaza Species 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 3
- 238000004781 supercooling Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 239000002131 composite material Substances 0.000 abstract description 3
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 10
- 239000003546 flue gas Substances 0.000 description 10
- 239000000446 fuel Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 239000010865 sewage Substances 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 239000010801 sewage sludge Substances 0.000 description 2
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
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- Treatment Of Sludge (AREA)
Abstract
The present invention relates to a wet sludge incineration treatment equipment with composite dryer. It is composed of circulating fluidized-bed incinerator furnace cavity, high-temperature gas-solid separator, tail portion flue duct, hot ash distribution valve, sludge pulverizing device, composite dryer and dryer exhaust treatment system. Said invention also provides its working principle and concrete operation method.
Description
Technical field
The present invention relates to the treating apparatus of a kind of discarded object (wet mud), particularly relate to the wet sludge treatment equipment that a kind of mummification of adopting the band combined dryer combines with burning.
Technical background
Mud is the solid residue after the sewage disposal, and sludge quantity accounts for 3 ‰ of sewage load～5 ‰ (in moisture content 97%).Industry of China and sanitary sewage disposal amount increase sharply, and the continuous construction along with sewage treatment plant will produce more mud.The composition of mud is very complicated, except that containing a large amount of moisture, also contains organic matter, various trace elements, pathogenic microorganism and the compositions such as parasitic ovum, heavy metal of common organic matter, difficult degradation.
The method for sludge treatment that with the burning is core process can farthest satisfy minimizing, stabilisation and innoxious requirement.But existing sludge incineration method mostly requires to use earlier special equipment mud to be carried out burn after the preliminary treatment such as mummification again, and mummification is finished system complex with burning in two complete equipments; The mummification equipment energy consumption is big, operating cost height, security requirement height; And simple burning and drying mud, be easy to generate NOx, need behind incinerator, to be equipped with nitrogen rejection facility; Simultaneously, because sulfur-bearing in the mud also needs to be equipped with desulfurizer behind incinerator.This makes sludge incinerating system complexity, harmless treatment with high costs.
Directly the wet mud that adds without mummification in incinerator burns, and the cell process such as harmless treatment of drying, burning even the flue gas of mud can be concentrated in the single device to carry out simultaneously, simplifies the sludge incineration treatment process, reduces processing cost; But moisture contained in the wet mud will be discharged burner hearth with burning the high-temperature flue gas that is produced, and take away a large amount of heats, therefore need to add a large amount of auxiliary fuels and just can reach energy balance.
Summary of the invention
The purpose of this invention is to provide a kind of recirculating fluidized bed wet sludge drying, incinerating and treating device with combined dryer, this device combines the drying and incineration of mud, concentrate in the integrated apparatus and carry out, wet sludge anhydration institute calorific requirement directly comes from the burning liberated heat of mud and auxiliary fuel, and the incinerator after-heat that from flue gas, reclaims, the mud after the mummification burns in burner hearth.
Technical scheme of the present invention is as follows:
The wet mud burning treatment apparatus that has combined dryer provided by the invention, comprise: the circulating fluidized bed incinerator burner hearth 1 that its top is communicated with successively, High Temperature Gas solid separator 2 and back-end ductwork 3, and hot grey distributing valve 4, the mud drier exhaust-gas treatment system 7 breaing up device 5, combined dryer 6 and form by the pulverized-coal collector 71 that is connected, cooler 72, steam-water separator 73 and blower fan 74, it is characterized in that:
The grey distributing valve 4 of described heat is positioned at High Temperature Gas solid separator 2 belows, and its inlet is connected with High Temperature Gas solid separator dipleg 21, and its outlet is connected with incinerator burner hearth 1 and combined dryer 6 respectively, and its concrete structure is:
One vertical flow distribution plate 402 is set under High Temperature Gas solid separator dipleg 21, these vertical flow distribution plate 402 both sides are provided with top respectively and communicate, the bottom surface is in hot grey distributing valve first feed space 403 and second feed space 405 of same level height, and described vertical flow distribution plate 402 is divided into two parts with the projection of separator dipleg 21 on described first feed space 403 and second feed space, 405 bottom surfaces;
Also be provided with first discharge chamber 404 and second discharge chamber 406, described first discharge chamber 404 and second discharge chamber, 406 tops are respectively equipped with first overfall 407 and second overfall 408, and described first overfall 407 and second overfall, 408 bottoms are in same level height;
Described first feed space 403 is connected by first lateral aperture 409 with first discharge chamber, 404 bottoms, and described first discharge chamber 404 tops are connected with incinerator burner hearth 1 by first overfall 407; Described second feed space 405 communicates by second lateral aperture 410 with second discharge chamber, 406 bottoms; Described first lateral aperture 409 and second lateral aperture, 410 tops are in same level height; Described vertical flow distribution plate 402 tops are not less than first lateral aperture, 409 tops, and are not higher than first overfall, 407 bottoms; Described first discharge chamber 404, first feed space 403, second feed space 405 and second discharge chamber, 406 bottom surfaces are equipped with the air distribution plate of band blast cap, the below of air distribution plate is provided with respectively and described first discharge chamber 404, first feed space 403, second feed space 405 and second discharge chamber, 406 corresponding air compartments, and air compartment feeds the adjustable fluidized wind of flow; There is balance wind pipe 401 to be connected between described first discharge chamber 404 and second discharge chamber 406;
Described combined dryer 6 is connected by the grey distributing valve 4 of second overfall 408 and described heat, and its concrete structure is:
In combined dryer 6, be provided with the vertical inlet partition wall 605 and the baffling partition wall 606 that are parallel to each other; Described inlet partition wall 605 is positioned at second overfall 408 places of combined dryer 6 near hot grey distributing valve 4, described baffling partition wall 606 is positioned at combined dryer 6 middle parts, and the two is divided into inlet 601, direct heat transfer chamber 602, indirect heat exchange chamber 603 with combined dryer 6 inside; Described inlet 601 tops are connected with second overfall 408, and described inlet 601 separates by inlet partition wall 605 with direct heat transfer chamber 602, and its two bottom communicates; Separate by baffling partition wall 606 with indirect heat exchange chamber 603 described direct heat transfer chamber 602, and its two top communicates; The bottom surface of described inlet 601, direct heat transfer chamber 602 and indirect heat exchange chamber 603 all is provided with the air distribution plate of band blast cap, the air distribution plate below is provided with respectively and described inlet 601, direct heat transfer chamber 602 and indirect heat exchange chamber 603 corresponding air compartments, and air compartment feeds the adjustable fluidizing gas of flow; Fluidizing gas in the described direct heat transfer chamber 602, indirect heat exchange chamber 603 are inert gas or through the incinerator smoke of supercooling, its fluidizing velocity is 0.4-1.5m/s;
602 tops, described direct heat transfer chamber are provided with wet mud near inlet 601 places and add inlet 609, and 603 tops, described indirect heat exchange chamber are provided with exhaust outlet 610 away from inlet 601 places; Be furnished with heat release coil pipe 608 in the described indirect heat exchange chamber 603, described baffling partition wall 606 upper ends are a little more than heat release coil pipe 608 upper ends, in order to avoid wearing and tearing heat release coil pipe 608; Described heat release coil pipe 608 is connected with pipe heat exchanger 31 in the back-end ductwork 3, is filled with heat transferring medium in heat release coil pipe 608 and the pipe heat exchanger 31; Described mud is broken up device 5 and is broken up device for mechanical type or Pneumatic type mud, adds inlet 609 by wet mud and is connected with combined dryer 6;
Described combined dryer 6 is provided with dewatered sludge outlet 611 and exhaust outlet 610 away from a side of second overfall 408; Described dewatered sludge outlet 611 is connected with incinerator burner hearth 1 by the dewatered sludge material returning device 612 or first screw(-type) feeder 613;
Described drier exhaust-gas treatment system 7 is connected with combined dryer 6 by the exhaust outlet 610 of combined dryer 6; The fine powder outlet of the pulverized-coal collector 71 of described drier exhaust-gas treatment system 7 is connected with incinerator burner hearth 1 by the fine powder material returning device 711 or second screw(-type) feeder 712, and the mud fine powder that will separate from the drier exhaust is sent incinerator burner hearth 1 back to.
Described dewatered sludge outlet 611 is arranged on the sidewall of combined dryer 6 away from second overfall 408, its bottom and second overfall, 408 bottoms are contour, and be connected with incinerator burner hearth 1 by dewatered sludge material returning device 612, will send incinerator burner hearth 1 back to through dewatered sludge material returning device 612 together through the mud and the cooled circulating ash of mummification.
Described dewatered sludge outlet 611 is arranged on the end of 603 bottom surfaces, composite drying indirect heat exchange chambers 6 away from inlet 601, and be connected with incinerator burner hearth 1 by first screw(-type) feeder 613, will send incinerator burner hearth 1 back to through first screw(-type) feeder 613 together through the mud and the cooled circulating ash of mummification.
The outlet partition wall 607 parallel with the partition wall 605 of entering the mouth is set in the indirect heat exchange chamber 603 of described combined dryer 6, be separated out downstream chamber 604, the bottom surface of described downstream chamber 604 is provided with the air distribution plate of band blast cap, the air distribution plate below is provided with and described downstream chamber 604 corresponding air compartments, feeds the adjustable fluidizing gas of flow in the air compartment; Described indirect heat exchange chamber 603 of being separated by outlet partition wall 607 communicates with 604 bottoms, downstream chamber; Described dewatered sludge outlet 611 is arranged on the sidewall of described downstream chamber 604, and its bottom and second overfall, 408 bottoms are contour, and are connected with incinerator burner hearth 1.
The ratio of the area of two parts that described vertical flow distribution plate 402 is divided into the projection of separator dipleg 21 on first feed space 403 and second feed space, 405 bottom surfaces is 0.25-4.0.
Principle of the present invention is:
The high-temp circulating ash that separates at the circulating fluidized bed incinerator cyclone separator distributes through the grey distributing valve of heat, and a part enters material returning device and directly returns burner hearth, and another part enters combined dryer; Moisture content is broken up the back and is added inlet and add from being located at wet mud on the combined dryer in bulk the putting of the wet mud economy-combat between the 60-90%; Combined dryer is the bubbling fluidized bed formula, and the bottom feeds fluidizing gas, wherein arranges the heat release coil pipe, absorbs the heat of hot flue gas in the pipe heat exchanger of heat transferring medium in back-end ductwork, heat release in the heat release coil pipe again, the wet mud of heating; Heat transferring medium can be conduction oil or steam.Utilize the heat of the flue gas that heat transferring medium is brought in the heat release coil pipe to heat, dry wet mud, but this part shortage of heat with wet sludge anhydration to moisture content 5-20%, insufficient section is supplied by the high-temp circulating ash that the grey distributing valve of heat branches to combined dryer.
By regulating the fluidising air velocity of hot grey distributing valve first feed space, second feed space and first discharge chamber, second discharge chamber, circulating ash can be distributed directly returning burner hearth and enter between the combined dryer, thereby the high-temp circulating ash amount that control enters combined dryer, the combined dryer delivery temperature is controlled at 80-150 ℃, and provide enough heat with wet sludge anhydration to moisture content 5-20%.Can increase the adjustable range of hot grey distributing valve by in closed circuit, adding inert bed material (as sand), strengthen its regulating power the combined dryer delivery temperature to increase the mode of global cycle ash amount; Wet mud in combined dryer with the direct blending of circulating ash, with heat release coil pipe indirect heat exchange, be heated, the contained humidity evaporation is dried to the dewatered sludge that moisture content is 5-20%, sends burner hearth with circulating ash back to by material returning device and burns.
When the height of direct returning charge mouth of heat ash and dewatered sludge returning charge mouth did not wait, first overfall and the second overfall pressure did not wait, and can come the balance circulating ash directly to return burner hearth and the flow resistance that flows into the combined dryer two-way by the position of flow distribution plate.When the direct returning charge mouth of heat ash was higher than dewatered sludge returning charge mouth, the first overfall pressure was lower, and flow distribution plate should be less than 1 with the ratio of the two-part area that the projection of separator dipleg on first feed space and the second feed space bottom surface is divided into; Otherwise then should be greater than 1.
Wet mud contained humidity major part is evaporated out in combined dryer, draws from the combined dryer top with the combined dryer fluidizing gas; The combined dryer exhaust is isolated after fine powder and dust, cooler condensation go out condensed water through pulverized-coal collector, through the blower fan pressurization, sends combined dryer back to as the combined dryer fluidizing gas and recycles again, and part is sent into burner hearth and burned; Isolated fine powder of pulverized-coal collector and dust are sent burner hearth back to by mechanical mode of movement or strength mode and are burned, and the condensed water that the cooler condensation goes out is sent sewage treatment plant back to and handled.
The drying process of wet mud carries out in combined dryer, the heat that utilizes the burning of mud that high-temp circulating ash brings into and auxiliary fuel to produce, also from flue gas, reclaim the fume afterheat of incinerator simultaneously, the mummification mud that wets, wet mud is the graininess dewatered sludge of 5-20% by mummification, return burner hearth with circulating ash again and burn, burn in the high-temperature flue gas that produces and only contain a small amount of water vapor; Most of moisture in the wet mud is discharged with the lower combined dryer exhaust of temperature with the form of steam, steam is condensed into water in cooler, can send sewage treatment plant back to handles, combined dryer exhaust through the dedusting dehumidifying can recycle in closed circulation, also can send into the burner hearth burning disposal, the gas that peculiar smell is arranged that produces in the time of can avoiding sludge drying is discharged in the environment.
The wet compound drying, incinerating and treating device of mud of recirculating fluidized bed provided by the invention has following advantage: break through that first mummification is burned again, two patterns that process is independently carried out separately, the drying and incineration of mud is combined, concentrate in the incorporate device and carry out, saved because of material cooling and transported thermal loss and the power consumption that causes, simplify the anhydration and incineration treatment process of wet mud greatly, simplified anhydration and incineration equipment; Wet sludge anhydration institute calorific requirement is from the waste heat and the burning liberated heat that comes from mud and auxiliary fuel of the hot flue gas of incinerator: hot particle directly contacts in combined dryer with wet mud, fully blending, strengthened heat transfer, made that wet mud is heated rapidly, drying; Wet simultaneously mud also with heat release coil pipe indirect heat exchange, absorb the heat that from hot flue gas, reclaims that heat transferring medium is brought into, thereby made full use of the fume afterheat of incinerator; For the pure burning of wet mud, adopt device of the present invention, the wet moisture percentage in sewage sludge upper limit that can allow to pure burning improves 2-3 percentage point, makes moisture content 73-75% and following wet mud can not add auxiliary fuel and burns; Add the burning of the wet mud of high-moisture percentage of auxiliary fuel for needs, adopt device of the present invention, can reduce the addition of auxiliary fuel, save operating cost: circulating fluidized bed incinerator adopts ciculation fluidized combustion system, has the NOx of supression and generates and desulfurizing function; Moisture major part contained in the wet mud is no longer with burning the high-temperature flue gas discharging that produces, but concentrate in the cryogenic gas of combined dryer discharge, reduced the thermal loss of system, reduced the consumption of incinerator auxiliary fuel or improved the upper limit that need not add the wet moisture percentage in sewage sludge that auxiliary fuel burns; The gas that produces in the sludge drying recycles or sends into burner hearth after treatment and burns, and makes the gas that does not discharge peculiar smell in the processing procedure.
Description of drawings
Accompanying drawing 1 is the device schematic diagram of the embodiment of the invention 1.
Accompanying drawing 2 is hot grey distributing valve and combined dryer schematic diagrames of the embodiment of the invention 1.
Accompanying drawing 3 is device schematic diagrames of the embodiment of the invention 2.
Accompanying drawing 4 is hot grey distributing valve and combined dryer schematic diagrames of the embodiment of the invention 2.
Accompanying drawing 5 is device schematic diagrames of the embodiment of the invention 3.
Accompanying drawing 6 is hot grey distributing valve and combined dryer schematic diagrames of the embodiment of the invention 3.
The specific embodiment
Fig. 1 and Fig. 2 are the structural representations of present embodiment, as seen from the figure, the wet mud burning treatment apparatus that has combined dryer of this embodiment is broken up device 5, combined dryer 6, drier exhaust-gas treatment system 7 (comprising pulverized-coal collector 71, cooler 72, steam-water separator 73 and blower fan 74 etc.) by circulating fluidized bed incinerator burner hearth 1, High Temperature Gas solid separator 2, back-end ductwork 3, hot grey distributing valve 4, mud and is formed.
The grey distributing valve 4 of heat is positioned at separator 2 belows, and inlet links to each other with separator dipleg 21, and outlet links to each other with combined dryer 6 with incinerator burner hearth 1 respectively, and its concrete structure is:
One vertical flow distribution plate 402 is set under separator dipleg 21, its both sides are provided with hot grey distributing valve first feed space 403 and second feed space 405 respectively, top, two Room communicates, the bottom surface is in same level height, and vertically flow distribution plate 402 is divided into two parts with the projection of separator dipleg 21 on bottom surface, two Room; Also comprise first discharge chamber 404 and second discharge chamber 406, the top of described first discharge chamber 404 and second discharge chamber 406 is respectively equipped with first overfall 407 and second overfall 408;
Described first feed space 403 communicates by first lateral aperture 409 with first discharge chamber, 404 bottoms, and first discharge chamber, 404 tops communicate with the incinerator burner hearth by first overfall 407; Second feed space 405 communicates by second lateral aperture 410 with second discharge chamber, 406 bottoms, and second discharge chamber, 406 tops are provided with second overfall 408; First overfall 407 and second overfall, 408 bottoms are in same level height; First lateral aperture 409 and second lateral aperture, 410 tops are in same level height; First discharge chamber 404, first feed space 403, second feed space 405 and second discharge chamber, 406 bottom surfaces all are provided with the air distribution plate of band blast cap, air distribution plate below is provided with respectively and described first discharge chamber 404, first feed space 403, second feed space 405 and second discharge chamber, 406 corresponding air compartments, feeds the adjustable fluidized wind of flow in the air compartment.There is balance wind pipe 401 to link to each other between first discharge chamber 404 and second discharge chamber 406.
Vertically flow distribution plate 402 tops and first overfall, 407 bottoms are contour; Vertically the ratio of the area of flow distribution plate 402 two parts that the projection of separator dipleg 21 on first feed space 403 and second feed space, 405 bottom surfaces is divided into is 0.25.
Be provided with vertical inlet partition wall 605 and baffling partition wall 606 in the combined dryer 6, the two is parallel; Inlet partition wall 605 is positioned at second overfall 408 places of combined dryer 6 near hot grey distributing valve 4, and baffling partition wall 606 is positioned at combined dryer 6 middle parts, and the two is divided into inlet 601, direct heat transfer chamber 602, indirect heat exchange chamber 603 with combined dryer 6 inside; Second overfall 408 communicates with inlet 601 tops, and inlet 601 separates by inlet partition wall 605 with direct heat transfer chamber 602, and the two bottom communicates; Separate by baffling partition wall 606 with indirect heat exchange chamber 603 direct heat transfer chamber 602, and the two top communicates; The bottom surface of inlet 601, direct heat transfer chamber 602 and indirect heat exchange chamber 603 all is provided with the air distribution plate of band blast cap, air distribution plate below is provided with respectively and described inlet 601, direct heat transfer chamber 602 and indirect heat exchange chamber 603 corresponding air compartments, feeds the fluidizing gas that flow can be regulated in the air compartment.The fluidizing gas of direct heat transfer chamber 602, indirect heat exchange chamber 603 is an inert gas, and fluidizing velocity is 0.4m/s.602 tops, direct heat transfer chamber are provided with wet mud near inlet 601 places and add inlet 609, and 603 tops, indirect heat exchange chamber are provided with exhaust outlet 610 away from inlet 601 places.Indirect heat exchange chamber 603 internal placement heat release coil pipes 608, baffling partition wall 606 upper ends are a little more than heat release coil pipe 608 upper ends.Heat release coil pipe 608 is connected with pipe heat exchanger 31 in the back-end ductwork 3, is filled with heat transferring medium in heat release coil pipe 608 and the pipe heat exchanger 31.
The wet mud of combined dryer 6 add inlet 609 tops and are provided with mechanical type mud and break up device 5, and the mud after breaing up directly falls into combined dryer 6.
Combined dryer 6 is provided with dewatered sludge outlet 611 away from the sidewall of second overfall 408, and dewatered sludge exports 611 bottoms and second overfall, 408 bottoms are contour; Dewatered sludge outlet 611 links to each other with incinerator burner hearth 1 by dewatered sludge material returning device 612, will send incinerator burner hearth 1 together back to through dewatered sludge material returning device 612 through the mud and the cooled circulating ash of mummification.
The exhaust outlet 610 of combined dryer links to each other with drier exhaust-gas treatment system 7, blower fan 74 outlets of drier exhaust-gas treatment system 7 link to each other with indirect heat exchange chamber 603 bottom air compartments with combined dryer direct heat transfer chambers 602 6 by fluidizing gas pipeline 741, have branch line 742 to link to each other with incinerator burner hearth 1.
The fine powder outlet of pulverized-coal collector 71 communicates with incinerator burner hearth 1 by fine powder material returning device 711, and the mud fine powder that will separate from the drier exhaust is sent incinerator burner hearth 1 back to; Fine powder material returning device 711 inlets are provided with gaza's mouth 713, add transport property and the fluidization characteristic of sand to improve the mud fine powder during for operation.
Fig. 1 and Fig. 2 are the structural representations of present embodiment, as seen from the figure, the wet mud burning treatment apparatus that has combined dryer of this embodiment is broken up device 5, combined dryer 6, drier exhaust-gas treatment system 7 (comprising pulverized-coal collector 71, cooler 72, steam-water separator 73 and blower fan 74 etc.) by circulating fluidized bed incinerator burner hearth 1, High Temperature Gas solid separator 2, back-end ductwork 3, hot grey distributing valve 4, mud and is formed.
The grey distributing valve 4 of heat is positioned at separator 2 belows, and inlet links to each other with separator dipleg 21, and outlet links to each other with combined dryer 6 with incinerator burner hearth 1 respectively, and its concrete structure is:
One vertical flow distribution plate 402 is set under separator dipleg 21, its both sides are provided with hot grey distributing valve first feed space 403 and second feed space 405 respectively, top, two Room communicates, the bottom surface is in same level height, and vertically flow distribution plate 402 is divided into two parts with the projection of separator dipleg 21 on bottom surface, two Room; Also comprise first discharge chamber 404 and second discharge chamber 406, the top of described first discharge chamber 404 and second discharge chamber 406 is respectively equipped with first overfall 407 and second overfall 408;
Described first feed space 403 communicates by first lateral aperture 409 with first discharge chamber, 404 bottoms, and first discharge chamber, 404 tops communicate with the incinerator burner hearth by first overfall 407; Second feed space 405 communicates by second lateral aperture 410 with second discharge chamber, 406 bottoms, and second discharge chamber, 406 tops are provided with second overfall 408; First overfall 407, second overfall, 408 bottoms are in same level height; First lateral aperture 409 and second lateral aperture, 410 tops are in same level height; First discharge chamber 404, first feed space 403, second feed space 405 and second discharge chamber, 406 bottom surfaces all are provided with the air distribution plate of band blast cap, air distribution plate below is provided with respectively and described first discharge chamber 404, first feed space 403, second feed space 405 and second discharge chamber, 406 corresponding air compartments, feeds the adjustable fluidized wind of flow in the air compartment.There is balance wind pipe 401 to link to each other between first discharge chamber 404 and second discharge chamber 406.Flow distribution plate 402 tops are not less than first lateral aperture, 409 tops, and are not higher than first overfall, 407 bottoms; Flow distribution plate 402 is with the projected area five equilibrium of separator dipleg 21 on first feed space 403 and second feed space, 405 bottom surfaces.
Be provided with vertical inlet partition wall 605 and baffling partition wall 606 in the combined dryer 6, the two is parallel; Inlet partition wall 605 is positioned at second overfall 408 places of combined dryer 6 near hot grey distributing valve 4, and baffling partition wall 606 is positioned at combined dryer 6 middle parts, and the two is divided into inlet 601, direct heat transfer chamber 602, indirect heat exchange chamber 603 with combined dryer 6 inside; Second overfall 408 communicates with inlet 601 tops, and inlet 601 separates by inlet partition wall 605 with direct heat transfer chamber 602, and the two bottom communicates; Separate by baffling partition wall 606 with indirect heat exchange chamber 603 direct heat transfer chamber 602, and the two top communicates; The bottom surface of inlet 601, direct heat transfer chamber 602 and indirect heat exchange chamber 603 all is provided with the air distribution plate of band blast cap, air distribution plate below is provided with respectively and described inlet 601, direct heat transfer chamber 602 and indirect heat exchange chamber 603 corresponding air compartments, feeds the fluidizing gas that flow can be regulated in the air compartment.The fluidizing gas of direct heat transfer chamber 602, indirect heat exchange chamber 603 is an inert gas, and fluidizing velocity is 0.8m/s.602 tops, direct heat transfer chamber are provided with wet mud near inlet 601 places and add inlet 609, and 603 tops, indirect heat exchange chamber are provided with exhaust outlet 610 away from inlet 601 places.Indirect heat exchange chamber 603 internal placement heat release coil pipes 608, baffling partition wall 606 upper ends are a little more than heat release coil pipe 608 upper ends.Heat release coil pipe 608 is connected with pipe heat exchanger 31 in the back-end ductwork 3, is filled with heat transferring medium in heat release coil pipe 608 and the pipe heat exchanger 31.
The wet mud of combined dryer 6 add inlet 609 tops and are provided with Pneumatic type mud and break up device 5, and the mud after breaing up directly falls in the combined dryer 6.
603 bottom surfaces, combined dryer indirect heat exchange chambers 6 are provided with dewatered sludge outlet 611 away from an end of inlet 601, link to each other with incinerator burner hearth 1 by first screw(-type) feeder 613, will send incinerator burner hearth 1 together back to through first screw(-type) feeder 613 through mud and the cooled circulating ash too changed.
The exhaust outlet 610 of combined dryer links to each other with drier exhaust-gas treatment system 7, and blower fan 74 outlets of drier exhaust-gas treatment system 7 link to each other with indirect heat exchange chamber 603 bottom air compartments with combined dryer direct heat transfer chambers 602 6 by fluidizing gas pipeline 741.
The fine powder outlet of pulverized-coal collector 71 communicates with incinerator burner hearth 1 by fine powder material returning device 711, and the mud fine powder that will separate from the drier exhaust is sent incinerator burner hearth 1 back to.
A kind of wet mud burning treatment apparatus that has combined dryer provided by the invention is broken up device 5, combined dryer 6, drier exhaust-gas treatment system 7 (comprising pulverized-coal collector 71, cooler 72, steam-water separator 73 and blower fan 74 etc.) by circulating fluidized bed incinerator burner hearth 1, High Temperature Gas solid separator 2, back-end ductwork 3, hot grey distributing valve 4, mud and is formed.
The grey distributing valve 4 of heat is positioned at separator 2 belows, and inlet links to each other with separator dipleg 21, and outlet links to each other with combined dryer 6 with incinerator burner hearth 1 respectively, and its concrete structure is:
One vertical flow distribution plate 402 is set under separator dipleg 21, its both sides are respectively hot grey distributing valve first feed space 403 and second feed space 405, top, two Room communicates, the bottom surface is in same level height, and vertically flow distribution plate 402 is divided into two parts with the projection of separator dipleg 21 on bottom surface, two Room; Also comprise first discharge chamber 404 and second discharge chamber 406, the top of described first discharge chamber 404 and second discharge chamber 406 is respectively equipped with first overfall 407 and second overfall 408;
First feed space 403 communicates by first lateral aperture 409 with first discharge chamber, 404 bottoms, and first discharge chamber, 404 tops communicate with the incinerator burner hearth by first overfall 407; Second feed space 405 communicates by second lateral aperture 410 with second discharge chamber, 406 bottoms, and second discharge chamber, 406 tops are provided with second overfall 408; First overfall 407, second overfall, 408 bottoms are in same level height; First lateral aperture 409 and second lateral aperture, 410 tops are in same level height; First discharge chamber 404, first feed space 403, second feed space 405 and second discharge chamber, 406 bottom surfaces all are provided with the air distribution plate of band blast cap, air distribution plate below is provided with respectively and described first discharge chamber 404, first feed space 403, second feed space 405 and second discharge chamber, 406 corresponding air compartments, feeds the adjustable fluidized wind of flow in the air compartment.There is balance wind pipe 401 to link to each other between first discharge chamber 404 and second discharge chamber 406.Flow distribution plate 402 tops are not less than first lateral aperture, 409 tops, and are not higher than first overfall, 407 bottoms; Flow distribution plate 402 is with the projected area five equilibrium of separator dipleg 21 on first feed space 403 and second feed space, 405 bottom surfaces.
Be provided with vertical inlet partition wall 605 and baffling partition wall 606 in the combined dryer 6, the two is parallel; Inlet partition wall 605 is positioned at second overfall 408 places of combined dryer 6 near hot grey distributing valve 4, and baffling partition wall 606 is positioned at combined dryer 6 middle parts, and the two is divided into inlet 601, direct heat transfer chamber 602, indirect heat exchange chamber 603 with combined dryer 6 inside; Second overfall 408 communicates with inlet 601 tops, and inlet 601 separates by inlet partition wall 605 with direct heat transfer chamber 602, and the two bottom communicates; Separate by baffling partition wall 606 with indirect heat exchange chamber 603 direct heat transfer chamber 602, and the two top communicates; The bottom surface of inlet 601, direct heat transfer chamber 602 and indirect heat exchange chamber 603 all is provided with the air distribution plate of band blast cap, air distribution plate below is provided with respectively and described inlet 601, direct heat transfer chamber 602 and indirect heat exchange chamber 603 corresponding air compartments, feeds the fluidizing gas that flow can be regulated in the air compartment.The fluidizing gas of direct heat transfer chamber 602, indirect heat exchange chamber 603 is the incinerator smoke through supercooling, and fluidizing velocity is 1.5m/s.602 tops, direct heat transfer chamber are provided with wet mud near inlet 601 places and add inlet 609, and 603 tops, indirect heat exchange chamber are provided with exhaust outlet 610 away from inlet 601 places.Indirect heat exchange chamber 603 internal placement heat release coil pipes 608, baffling partition wall 606 upper ends are a little more than heat release coil pipe 608 upper ends.Heat release coil pipe 608 is connected with pipe heat exchanger 31 in the back-end ductwork 3, is filled with heat transferring medium in heat release coil pipe 608 and the pipe heat exchanger 31.
The wet mud of combined dryer 6 add inlet 609 tops and are provided with mechanical type mud and break up device 5, and the mud after breaing up directly falls in the combined dryer 6.
The opposite side relative with inlet 601 in the combined dryer 6 is provided with the outlet partition wall 607 parallel with the partition wall 605 of entering the mouth, and is separated out downstream chamber 604, and its bottom surface is the air distribution plate of band blast cap, the corresponding air compartment in below, the fluidizing gas that the feeding flow can be regulated; Separate by outlet partition wall 607 with downstream chamber 604 indirect heat exchange chamber 603, and the two bottom communicates; Downstream chamber's 604 sidewalls are provided with dewatered sludge outlet 611, and dewatered sludge exports 611 bottoms and second overfall, 408 bottoms are contour; Dewatered sludge outlet 611 links to each other with incinerator burner hearth 1.
The exhaust outlet 610 of combined dryer links to each other with drier exhaust-gas treatment system 7, blower fan 74 outlets of drier exhaust-gas treatment system 7 link to each other with indirect heat exchange chamber 603 bottom air compartments with combined dryer direct heat transfer chambers 602 6 by fluidizing gas pipeline 741, have branch line 742 to link to each other with incinerator burner hearth 1.
The fine powder outlet of pulverized-coal collector 71 communicates with incinerator burner hearth 1 by second screw(-type) feeder 712, and the mud fine powder that will separate from the drier exhaust is sent incinerator burner hearth 1 back to; Second screw(-type) feeder, 712 inlets are provided with gaza's mouth 713, add transport property and the fluidization characteristic of sand to improve the mud fine powder during for operation.
Claims (9)
1. wet mud burning treatment apparatus that has combined dryer, comprise: the circulating fluidized bed incinerator burner hearth (1) that its top is communicated with successively, High Temperature Gas solid separator (2) and back-end ductwork (3), and hot grey distributing valve (4), the mud drier exhaust-gas treatment system (7) breaing up device (5), combined dryer (6) and form by the pulverized-coal collector that is connected (71), cooler (72), steam-water separator (73) and blower fan (74), it is characterized in that:
The grey distributing valve of described heat (4) is positioned at High Temperature Gas solid separator (2) below, and its inlet is connected with High Temperature Gas solid separator dipleg (21), and its outlet is connected with incinerator burner hearth (1) and combined dryer (6) respectively, and its concrete structure is:
One vertical flow distribution plate (402) is set under High Temperature Gas solid separator dipleg (21), these vertical flow distribution plate (402) both sides are provided with top respectively and communicate, the bottom surface is in hot grey distributing valve first feed space (403) and second feed space (405) of same level height, and described vertical flow distribution plate (402) is divided into two parts with the projection of separator dipleg (21) on described first feed space (403) and second feed space (405) bottom surface;
Also be provided with first discharge chamber (404) and second discharge chamber (406), described first discharge chamber (404) and second discharge chamber (406) top are respectively equipped with first overfall (407) and second overfall (408), and described first overfall (407) and second overfall (408) bottom are in same level height;
Described first feed space (403) is connected by first lateral aperture (409) with first discharge chamber (404) bottom, and described first discharge chamber (404) top is connected with incinerator burner hearth (1) by first overfall (407); Described second feed space (405) communicates by second lateral aperture (410) with second discharge chamber (406) bottom; Described first lateral aperture (409) and second lateral aperture (410) top are in same level height; Described vertical flow distribution plate (402) top is not less than first lateral aperture (409) top, and is not higher than first overfall (407) bottom; Described first discharge chamber (404), first feed space (403), second feed space (405) and second discharge chamber (406) bottom surface are equipped with the air distribution plate of band blast cap, the below of air distribution plate is provided with respectively and described first discharge chamber (404), first feed space (403), second feed space (405) and the corresponding air compartment of second discharge chamber (406), and air compartment feeds the adjustable fluidized wind of flow; There is balance wind pipe (401) to be connected between described first discharge chamber (404) and second discharge chamber (406);
Described combined dryer (6) is connected with the grey distributing valve of described heat (4) by second overfall (408), and its concrete structure is:
In combined dryer (6), be provided with the vertical inlet partition wall (605) and the baffling partition wall (606) that are parallel to each other; Described inlet partition wall (605) is positioned at combined dryer (6) and locates near second overfall (408) of hot grey distributing valve (4), described baffling partition wall (606) is positioned at combined dryer (6) middle part, and the two is divided into inlet (601), direct heat transfer chamber (602), indirect heat exchange chamber (603) with combined dryer (6) inside; Described inlet (601) top is connected with second overfall (408), and described inlet (601) separates by inlet partition wall (605) with direct heat transfer chamber (602), and its two bottom communicates; Separate by baffling partition wall (606) with indirect heat exchange chamber (603) described direct heat transfer chamber (602), and its two top communicates; The bottom surface of described inlet (601), direct heat transfer chamber (602) and indirect heat exchange chamber (603) all is provided with the air distribution plate of band blast cap, the air distribution plate below is provided with respectively and described inlet (601), the corresponding air compartment in direct heat transfer chamber (602) and indirect heat exchange chamber (603), and air compartment feeds the adjustable fluidizing gas of flow; Fluidizing gas in the described direct heat transfer chamber (602), indirect heat exchange chamber (603) is an inert gas or through the incinerator smoke of supercooling, its fluidizing velocity is 0.4-1.5m/s;
Top, described direct heat transfer chamber (602) is located to be provided with wet mud near inlet (601) and is added inlet (609), and exhaust outlet (610) is located to be provided with away from inlet (601) in top, described indirect heat exchange chamber (603); Be furnished with heat release coil pipe (608) in the described indirect heat exchange chamber (603), described baffling partition wall (606) upper end is a little more than heat release coil pipe (608) upper end; Described heat release coil pipe (608) is connected with pipe heat exchanger (31) in the back-end ductwork (3), is filled with heat transferring medium in heat release coil pipe (608) and the pipe heat exchanger (31);
Described mud is broken up device (5) and is broken up device for mechanical type or Pneumatic type mud, adds inlet (609) by wet mud and is connected with combined dryer (6);
Described combined dryer (6) is provided with dewatered sludge outlet (611) and exhaust outlet (610) away from a side of second overfall (408); Described dewatered sludge outlet (611) is connected with incinerator burner hearth (1) by dewatered sludge material returning device (612) or first screw(-type) feeder (613);
Described drier exhaust-gas treatment system (7) is connected with combined dryer (6) by the exhaust outlet (610) of combined dryer (6); The fine powder outlet of the pulverized-coal collector (71) of described drier exhaust-gas treatment system (7) is connected with incinerator burner hearth (1) by fine powder material returning device (711) or second screw(-type) feeder (712), and the mud fine powder that will separate from the drier exhaust is sent incinerator burner hearth (1) back to.
2. by the described wet mud burning treatment apparatus that has combined dryer of claim 1, it is characterized in that, described dewatered sludge outlet (611) is arranged on the sidewall of combined dryer (6) away from second overfall (408), its bottom and second overfall (408) bottom are contour, and be connected with incinerator burner hearth (1) by dewatered sludge material returning device (612), will send incinerator burner hearth (1) back to through dewatered sludge material returning device (612) together through the mud and the cooled circulating ash of mummification.
3. by the described wet mud burning treatment apparatus that has combined dryer of claim 1, it is characterized in that, described dewatered sludge outlet (611) is arranged on the end of bottom surface, combined dryer (6) indirect heat exchange chamber (603) away from inlet (601), and be connected with incinerator burner hearth (1) by first screw(-type) feeder (613), will send incinerator burner hearth (1) back to through first screw(-type) feeder (613) together through the mud and the cooled circulating ash of mummification.
4. by the described wet mud burning treatment apparatus that has combined dryer of claim 1, it is characterized in that, in the indirect heat exchange chamber (603) of described combined dryer (6), be provided with and the parallel outlet partition wall (607) of inlet partition wall (605), be separated out downstream chamber (604), the bottom surface of described downstream chamber (604) is provided with the air distribution plate of band blast cap, the air distribution plate below is provided with and the corresponding air compartment in described downstream chamber (604), feeds the adjustable fluidizing gas of flow in the air compartment; Described indirect heat exchange chamber (603) of being separated by outlet partition wall (607) communicates with downstream chamber (604) bottom; Described dewatered sludge outlet (611) is arranged on the sidewall of described downstream chamber (604), and its bottom and second overfall (408) bottom are contour, and are connected with incinerator burner hearth (1).
5. by the described wet mud burning treatment apparatus that has combined dryer of claim 1, it is characterized in that the ratio of the area of two parts that described vertical flow distribution plate (402) is divided into the projection of separator dipleg (21) on first feed space (403) and second feed space (405) bottom surface is 0.25-4.0.
6. by the described wet mud burning treatment apparatus that has combined dryer of claim 1, it is characterized in that blower fan (74) outlet of described drier exhaust-gas treatment system (7) is connected with direct heat transfer chamber (602) and indirect heat exchange chamber (603) bottom air compartment of combined dryer (6) by a fluidizing gas pipeline (741).
7. by the described wet mud burning treatment apparatus that has combined dryer of claim 1, it is characterized in that blower fan (74) outlet of described drier exhaust-gas treatment system (7) is connected with incinerator burner hearth (1) by a branch line (742).
8. by the described wet mud burning treatment apparatus that has combined dryer of claim 1, it is characterized in that described fine powder material returning device (711) inlet is provided with gaza's mouth (713).
9. by the described wet mud burning treatment apparatus that has combined dryer of claim 1, it is characterized in that described second screw(-type) feeder (712) inlet is provided with gaza's mouth (713).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101029667A CN100447489C (en) | 2005-09-16 | 2005-09-16 | Wet mud burning treatment apparatus with compound dryer |
| JP2008517303A JP4755250B2 (en) | 2005-06-21 | 2006-06-21 | Combined dryer, wet sludge incineration apparatus with combined dryer, and method thereof |
| PCT/CN2006/001415 WO2006136105A1 (en) | 2005-06-21 | 2006-06-21 | A combined dryer and a method and an equipment for incinerating the wet sludge with the combined dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101029667A CN100447489C (en) | 2005-09-16 | 2005-09-16 | Wet mud burning treatment apparatus with compound dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1932384A CN1932384A (en) | 2007-03-21 |
| CN100447489C true CN100447489C (en) | 2008-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101029667A Expired - Fee Related CN100447489C (en) | 2005-06-21 | 2005-09-16 | Wet mud burning treatment apparatus with compound dryer |
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| CN (1) | CN100447489C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101813318A (en) * | 2010-04-27 | 2010-08-25 | 北京中科通用能源环保有限责任公司 | Gas blowby prevention method used for circulating fluid bed garbage furnace, and external type overheating device |
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| CN101708939B (en) * | 2008-11-04 | 2011-12-14 | 北京博奇电力科技有限公司 | Sludge drying incineration processing system utilizing system residual heat |
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