CN102180578B - Sludge drying and incinerating system, sludge drying machine and sludge drying method - Google Patents
Sludge drying and incinerating system, sludge drying machine and sludge drying method Download PDFInfo
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- CN102180578B CN102180578B CN201110067528A CN201110067528A CN102180578B CN 102180578 B CN102180578 B CN 102180578B CN 201110067528 A CN201110067528 A CN 201110067528A CN 201110067528 A CN201110067528 A CN 201110067528A CN 102180578 B CN102180578 B CN 102180578B
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Abstract
The invention relates to a sludge drying and incinerating system, which comprises a sludge drying machine and a heat source, wherein the sludge drying machine comprises at least one first sludge drying module; the first sludge drying module comprises a first enclosed shell, a first heat conducting sludge support plate, a scraping mechanism, a first fan, an evaporating and condensing device and a first surface cooler which is connected with the heat source; and the evaporating and condensing device comprises a compressor, a condenser and an evaporator which are connected to form a loop, a cold medium in the loop and a drainer. Heat is transferred to the first sludge support plate by the condenser to heat sludge; air is supplied by the first fan to form evaporation-accelerated air current on the surface of the sludge; circulating air is condensed and dehydrated by the evaporator; and the sludge can be dried quickly by hot air with low moisture content in an energy-saving way. Moreover, a plurality of first sludge drying modules a plurality of second sludge drying modules can be connected together and combined segmentally for drying, so that the sludge drying rate is effectively increased and the water content of sludge is lowered.
Description
Technical field
The present invention relates to sludge treating system, more particularly, relate to a kind of sludge drying and incineration system that can handle mud.
Background technology
General city domestic sewage factory or waste plant all produce a large amount of domestic sludges; Common method for sludge treatment is: with domestic sludge after press filtration; Usually about 80%, the mud of high-moisture percentage is used for landfill, During High-Temperature Composting etc. to its water ratio mostly, and this just causes new environmental pollution easily.And the burning disposal of mud is a mud solution the most completely, but the high mud of water ratio can not directly burn, and must dewater earlier, mummification or add the burning auxiliary material.A kind of method in back is not only wasted fuel but also can be produced new pollution, so all will carry out mummification earlier before the general sludge incineration.
Traditional sludge drying all adopts high-temperature steam to be heated to 600-800 ℃, accomplishes the energy of this just inevitable labor by drying machine or employing residual heat of electric power plant.Sewage work needs supporting high-temperature steam boiler, can drop into very big construction work expense like this, and sludge incineration could solve on the spot.Because construction work has high input, working cost is high, therefore the mud problem can not get effective solution all the time both at home and abroad, and the drying and incineration problem of mud becomes the bottleneck problem that the municipal sewage plant needs to be resolved hurrily.
Summary of the invention
The technical problem that the present invention will solve is; A kind of sludge drying and incineration system, sludge drying machine and sludge drying method are provided; Be that the energy-conservation drying and incineration waste heat of mud utilizes and combines together; Both avoided a large amount of infrastructure investments, and can accomplish the energy-conserving and environment-protective operation again, the mud problem is solved at all.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of sludge drying and incineration system, comprise sludge drying machine and thermal source;
Said sludge drying machine comprises at least one first sludge drying module; The said first sludge drying module comprises first shell of the sealing that is provided with mud import and sludge outlet, the first mud supporting plate that is arranged on heat conduction between said mud import and the sludge outlet, first mud-scraping mechanism, first blower fan of above the said first mud supporting plate, drying, the apparatus for evaporation condensation that are arranged on said first mud supporting plate top and first surface cooler that is connected with said thermal source;
Said apparatus for evaporation condensation comprises the compressor, condensing surface and the vaporizer that connect into the loop, the refrigerant and the hydathode of internal recycle in said loop; Said hydathode cooperates with said vaporizer and the water of condensation of said vaporizer is discharged said first shell;
Said condensing surface is positioned at said first mud supporting plate below and heat is passed to the said first mud supporting plate; The said vaporizer and first blower fan are positioned at the both sides of the said first mud supporting plate, and said first surface cooler is between the said vaporizer and first blower fan; The air that said first blower fan is seen off forms recirculating air through the said first mud supporting plate top, vaporizer, first surface cooler successively.
In sludge drying and incineration system of the present invention, the said first mud supporting plate is the flat board of hollow;
Said condensing surface is the water cooled condenser that is arranged in the said first mud supporting plate; Be filled with the media of the heat that absorbs said water cooled condenser in the said first mud supporting plate.
In sludge drying and incineration system of the present invention, said sludge drying machine also comprises at least one second sludge drying module; The said second sludge drying module comprises second shell of the sealing that is provided with mud import and sludge outlet, the second mud supporting plate that is arranged on heat conduction between said mud import and the sludge outlet, second mud-scraping mechanism that is arranged on said second mud supporting plate top, second blower fan of above the said second mud supporting plate, drying, second surface cooler that is connected with said thermal source and the 3rd surface cooler that inserts low-temperature receiver; Be provided with second hydathode with said the 3rd surface cooler relative position; The air that said second blower fan is seen off forms circulation through said second mud supporting plate top, the 3rd surface cooler and second surface cooler successively.
In sludge drying and incineration system of the present invention, the said second mud supporting plate is the flat board of hollow; Be provided with the runner that inserts said thermal source in the said second mud supporting plate.
In sludge drying and incineration system of the present invention, said thermal source comprises sludge incinerator, is arranged on the heat regenerator in the said sludge incinerator, water inlet pipe and the rising pipe that is connected with said heat regenerator; On the said rising pipe hot water circulting pump is set;
Said rising pipe is communicated with the runner of said first surface cooler, second surface cooler, the second mud supporting plate, sends into hot water.
In sludge drying and incineration system of the present invention, the water outlet of the runner of said first surface cooler, second surface cooler, the second mud supporting plate is communicated with the water inlet pipe of said heat regenerator.
In sludge drying and incineration system of the present invention, said sludge drying machine comprises a plurality of said first sludge drying module and said second sludge drying module that is connected; The sludge outlet and the mud import of the said a plurality of first sludge drying module and the second sludge drying module are docked successively; Perhaps; Second shell of first shell of the said first sludge drying module and the second sludge drying module is a unsplit casing; And, on the said dividing plate opening is set between the adjacent said first sludge drying module, between the adjacent said first sludge drying module and the second sludge drying module dividing plate is set;
The water outlet of said rising pipe flow through successively second surface cooler of the said second sludge drying module, first surface cooler of a plurality of said first sludge drying modules that are connected in series.
The present invention also provides a kind of sludge drying machine, comprises at least one first sludge drying module; The said first sludge drying module comprise first shell, the first mud supporting plate that is arranged on heat conduction between said mud import and the sludge outlet that is provided with the sealing of mud import and sludge outlet, first mud-scraping mechanism that is arranged on said first mud supporting plate top, first blower fan of above the said first mud supporting plate, drying, apparatus for evaporation condensation and with first surface cooler that heat is provided;
Said apparatus for evaporation condensation comprises compressor, condensing surface, vaporizer and the hydathode that connects into the loop;
Said condensing surface is positioned at said first mud supporting plate below and heat is passed to the said first mud supporting plate; The said vaporizer and first blower fan are positioned at the both sides of the said first mud supporting plate, and said first surface cooler is between the said vaporizer and first blower fan; The air that said first blower fan is seen off forms circulation through the said first mud supporting plate top, vaporizer, first surface cooler successively; Said hydathode cooperates with said vaporizer and the water of condensation of said vaporizer is discharged said first shell.
In sludge drying machine of the present invention, also comprise at least one second sludge drying module; The said second sludge drying module comprises second shell that is provided with mud import and sludge outlet sealing, the second mud supporting plate that is arranged on heat conduction between said mud import and the sludge outlet, second mud-scraping mechanism that is arranged on said second mud supporting plate top, second blower fan of above the said second mud supporting plate, drying, second surface cooler that heat is provided and the 3rd surface cooler that inserts low-temperature receiver; Be provided with second hydathode with said the 3rd surface cooler relative position; The air that said second blower fan is seen off forms circulation through said second mud supporting plate top, the 3rd surface cooler and second surface cooler successively.
The present invention also provides a kind of sludge drying method that uses above-mentioned sludge drying and incineration system; May further comprise the steps: S1: mud gets into first first sludge drying module; And mud is by the heating of the water cooled condenser of said first first sludge drying module, and blows in Sludge Surface with the recirculating air of first temperature; And recirculating air is dehumidified by the vaporizer of said first first sludge drying module;
S2: the mud through step S1 mummification gets into next first sludge drying module, and is heated by the water cooled condenser of said next first sludge drying module, and blows in Sludge Surface with the recirculating air of second temperature; This second temperature is higher than first temperature; And recirculating air is dehumidified by the vaporizer of said next first sludge drying module; Mud gets into the next stage first sludge drying module successively, and the recirculating air temperature of every next stage is higher than upper level recirculating air temperature;
S3: the mud through step S2 mummification gets into the second sludge drying module, and heats through the second mud supporting plate of the said second sludge drying module, and blows in Sludge Surface with the recirculating air of the 3rd temperature; The 3rd temperature is higher than the temperature of recirculating air of the first sludge drying module of upper level; And recirculating air is dehumidified through the 3rd surface cooler.
Embodiment of the present invention has following beneficial effect: through condensing surface heat is passed to the first mud supporting plate, mud is heated; Blow through first blower fan then; Form the air-flow of accelerated evaporation in Sludge Surface; And by vaporizer recirculating air is carried out condensation and dewater, whole process adopts contrary carnot's working cycle principle to separate the moisture from mud to the recirculating air, and the raising of mud self-temperature; Make that mud can energy-conservation fast mummification, reach the degree that mud can burn (not adding auxiliary material).
In addition, can also come dewatered sludge, improve sludge drying efficient and realize making full use of of the energy, make system efficiency higher the source of sewage of sludge incineration gained part of waste heat, sewage work self.
In addition, the mud that promotes on the first mud supporting plate through first mud-scraping mechanism advances, and is that mud is constantly stirred in this process, thereby makes recirculating air can take away the moisture of mud fast, has improved the mummification speed of mud greatly.
In addition, can a plurality of first sludge drying modules and the second sludge drying module be coupled together,, carry out the mummification of sectional, effectively improve the mummification rate of mud, reduce the water cut of mud according to the different operating modes of mud.
In addition, because the moisture in the recirculating air is to discharge at the surface condensation of vaporizer, avoided the generation secondary pollution problem.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the structural representation of sludge drying and incineration system of the present invention;
Fig. 2 is the structural representation of the first sludge drying module of sludge drying and incineration system of the present invention;
Fig. 3 is the structural representation of the second sludge drying module of sludge drying and incineration system of the present invention;
Fig. 4 is the fit structure synoptic diagram of the mud-scraping mechanism of sludge drying and incineration system of the present invention;
Fig. 5 is the structural representation that sludge drying and incineration system of the present invention adopts one first sludge drying module and one second sludge drying module;
Fig. 6 is the structural representation of another embodiment of sludge drying system of the present invention;
Fig. 7 is the synoptic diagram of another kind of structure formation of the mud-scraping mechanism of sludge drying system of the present invention.
Embodiment
To shown in Figure 4, is an embodiment of sludge drying and incineration system of the present invention like Fig. 1, can be used for sludge from wastewater treatment plant and handles; The sludge drying that certainly, also can be applied to other occasion is handled.This system comprises sludge drying machine 100, thermal source; Certainly, also be provided with the even charger of mud, electric control system etc.The even charger of this mud can be selected suitable device as required; Electric control system then is used to control the operation of the electrical component of total system.Understandable, this sludge drying machine 100 can separately use, as long as select suitable thermal source that heat is provided.
In the present embodiment, this thermal source adopts sludge incinerator 200, and special can be afterheat recovery type sludge incinerator 200.In this sludge incinerator 200 heat regenerator 201 is set, this heat regenerator 201 is provided with water inlet pipe 202 and rising pipe 203.Hot water circulting pump 204 is set, so that the circulation of supplying water on the rising pipe 203.The first sludge drying module 110, the second sludge drying module 130 that this rising pipe 203 is respectively sludge drying machine 100 provide hot water; And carry out the water outlet after the heat exchange through the first sludge drying module 110 and the second sludge drying module 130, get into heat regenerator 201 again, carry out waste heat recovery through water inlet pipe 202.
The heat that adopts sludge incineration to produce, the sludge moisture content that is used to burn is at 35-45%, and the part heat is used for the vaporization of mud moisture, and the part heat outwards discharges through incinerator 200 bodies and chimney 205.Under the prerequisite that guarantees incinerator 200 trouble-free burning, carry out heat recovery and utilization.The heat regenerator of in incinerator 200, installing 201; Can add about hot water to 90 ℃; Through hot water circulting pump 204 about 90 ℃ hot water heat is used for sludge drying machine 100, and the hot water backwater temperature of sludge drying machine 100 after using be about 45 ℃, thereby realize the recycling of waste heat.
Understandable, this sludge incinerator 200 also is provided with chimney 205, dewatered sludge opening for feed 206, waste residue discharge port 207, burner, induced draft fan (figure does not show) etc., and this is that those skilled in the art can understand.
This sludge drying machine 100 can comprise a plurality of first sludge drying modules 110 and the second sludge drying module 130; Thermal source adopts sludge incinerator 200 to provide.As shown in the figure, adopt three first sludge drying modules 110, second a sludge drying module 130 in the present embodiment, formed I, II, III, IV section sludge drying section jointly.Understandable, also can select to use a plurality of second sludge drying modules 130 that are connected in series according to the practical situation of mud.
Each first sludge drying module 110 comprises first shell 111, the first mud supporting plate 112, first mud-scraping mechanism 113, first blower fan 114, apparatus for evaporation condensation, first surface cooler 116 of sealing etc.
This first shell 111 is provided with mud import 117 and sludge outlet 118.When using a plurality of first sludge drying module 110, the mud import 117 of first first sludge drying module 110 is relative with the even charger of mud, access mud; And the sludge outlet 118 of first first sludge drying module 110 docks with the mud import 117 of the second sludge drying module 130; Successively a plurality of first sludge drying modules 110 are connected; The sludge outlet 118 of last first sludge drying module 110 docks with the mud import 117 of the second sludge drying module 130; Thereby make mud can pass through a plurality of first sludge drying modules 110 and the second sludge drying module 130 successively, form a part section mummification.
This first mud supporting plate 112 is arranged between mud import 117 and the sludge outlet 118; And first mud-scraping mechanism 113 is arranged on the first mud supporting plate, 112 tops; Mud can evenly enter on the first mud supporting plate 112 from mud import 117; Promote by first mud-scraping mechanism 113 again, discharge from sludge outlet 118 through the first mud supporting plate, 112 backs.Understandable, in the both sides of the first mud supporting plate 112 the mud baffle plate can also be set, prevent falling of mud.
In the present embodiment, this first mud supporting plate 112 is dull and stereotyped for the hollow of heat conduction, in the hollow flat board, is filled with media (media of heat conductivity heat-insulatings such as Ru Shui, sand); Simultaneously, the condensing surface 122 of apparatus for evaporation condensation is arranged in this first mud supporting plate 112, thereby passes through the heat of the media draw in cold condenser 122 in the hollow flat board, improves the temperature of the first mud supporting plate 112.When mud is added to 112 last times of the first mud supporting plate by the even charger of mud, because the temperature of the first mud supporting plate 112 is higher, and then heating mud, the temperature of mud is raise.At this moment, the steam output of mud is multiplied than normal temperature mud, consumes heat energy simultaneously, and mud dries out, self mummification; Mud evaporates the middle temperature wind that the moisture that seen off by first blower fan 114 to be taken away, and the vaporizer place to apparatus for evaporation condensation separates; Mud is then promoted to move to sludge outlet 118 by first mud-scraping mechanism 113, constantly by mummification, reduces to 35-45% up to water cut.
This apparatus for evaporation condensation comprises compressor 121, condensing surface 122 and the vaporizer 123 that connects into the loop; Certainly, also be provided with container for storing liquid 124, moisture eliminator 126, expansion valve 127 etc. on the loop, to guarantee the reliability service in loop.In the loop, be filled with the work refrigerant.In the present embodiment, this condensing surface 122 adopts water cooled condenser 122, and is arranged in the first mud supporting plate 112, carries out heat exchange with the first mud supporting plate, 112 interior media, makes media become the high temperature media.
Position cooperating with vaporizer 123 is provided with hydathode, is used for the water of condensation of vaporizer 123 is discharged first shell 111.In the present embodiment, this hydathode is the drip tray that is arranged on vaporizer 123 belows, be appreciated that this hydathode also can be in waterways that outer casing bottom is provided with, structure such as groove, as long as be convenient to the discharge of water of condensation.
During this apparatus for evaporation condensation work, 121 pairs of refrigerants of compressor compress, and form the refrigerant of HTHP, are sent to then in the water cooled condenser 122; The refrigerant of HTHP in water cooled condenser 122 with the first mud supporting plate 112 in media (Ru Shui, sand etc.) carry out heat exchange, add thermal medium to 60-70 ℃; The heat of media is given mud through these first mud supporting plate, 112 conduction, thus heating mud.Refrigerant through heat exchange becomes middle press liquid, and behind container for storing liquid 124, moisture eliminator 126, expansion valve 127, refrigerant becomes low-temp low-pressure gas, arrives vaporizer 123 then; Then, the low-temp low-pressure refrigerant in vaporizer 123 absorbs airborne sensible heat and latent heat, and refrigerant becomes medium pressure gas, gets back to compressor 121, accomplishes the circulation of refrigerant.
Because vaporizer 123 absorbs airborne sensible heat and latent heat; The temperature and the regain of air are reduced simultaneously; Become the cryogenic air of low humidity, the reduction of temperature makes airborne large quantity of moisture be separated, and forms water of condensation on vaporizer 123 surfaces; Water of condensation is discharged this first shell 111 through hydathode, accomplishes dehumidifying.
The low humidity Cryogenic air is then through first surface cooler 116; Be heated to middle temperature, middle temperature contains wet low air and is sucked by first blower fan 114, blows to the top of the first mud supporting plate 112; Then absorb mud moisture evaporated and the heat that distributes, accomplish cold and hot dehumidifying circulation.
During work, the dry cold wind (wind that absolute moisture content is little) after vaporizer 123 dehumidifying, warm wind in first surface cooler 116 is heated into, and have first blower fan 114 to siphon away; After 114 pressurizations of first blower fan; In warm wind be sent to the top of the first mud supporting plate 112 because the first mud supporting plate, 112 bottoms have water cooled condenser 122 constantly heat, the heat warp first mud supporting plate 112 passes to mud and air; Mud gets hot back moisture evaporation; The part sensible heat is also passed to air, makes AT raise, and absolute moisture content raises; Sludge Surface has first blower fan 114 to blow to such an extent that middle warm air is blown over the wind speed of 2-5m/s again, further the moisture evaporation of accelerate sludge.The air that De Rede wets becomes the air of low temperature and low humidity through vaporizer 123 cool-down dehumidifications of the installation of tilting, and realizes that moisture separates from air, realizes that wind circulates.
This first surface cooler 116 adopts hydro-thermal surface coolers, and is as shown in the figure, and first surface cooler 116 of a plurality of first sludge drying modules 110 is connected in series through pipeline, and joins with water inlet pipe 202 with the rising pipe 203 of sludge incinerator 200, forms water loop.Because these first surface coolers 116 are to be connected in series, make lower in water temperature, higher near the water temperature of first surface cooler 116 of sludge incinerator 200 near first surface cooler 116 of the position of sewage sludge feed, thereby; Temperature at the recirculating air of initial position is lower; Along with mud is heated propelling, the temperature of recirculating air raises gradually, has avoided the quick mummification of Sludge Surface and has influence on follow-up mummification; Make mud to improve mummification efficient internally to surface mummification gradually.
After through the mummification of adopting a plurality of first sludge drying modules 110 of carrying out mummification against the carnot's working cycle principle; Sludge outlet 118 places of one first sludge drying module 110 in the end; Dock one second sludge drying module 130, carry out quick high-temp and add heat drying.
This second sludge drying module 130 comprises second shell 131 of sealing, and this second shell 131 is provided with mud import 137 and sludge outlet 138 equally.The mud import 137 of second shell 131 is joined with the sludge outlet 118 of last first sludge drying module 110, thereby inserts mud.
In second shell 131, between mud import 137 and sludge outlet 138, be provided with the second mud supporting plate 132 of heat conduction, mud carries out mummification on this second mud supporting plate 132.This second mud supporting plate 132 equally can be dull and stereotyped for the heat conduction of hollow, further, in the second mud supporting plate 132, is provided with the runner 142 that inserts thermal source.This runner 142 can be for snakelike, labyrinth shape etc., is connected with the rising pipe 203 of sludge incinerator 200, and insert the hot water of rising pipe 203, and then heat is delivered to the mud on the second mud supporting plate 132, thus heating mud.
Same, above the second mud supporting plate 132, second mud-scraping mechanism 133 can be set, move on the second mud supporting plate 132 thereby promote mud, until discharging from sludge outlet 138.
Also be provided with second blower fan 134, second surface cooler 136 and the 3rd surface cooler 143 in this second shell 131.This second surface cooler 136 adopts the hot water gauge cooler, is connected with the rising pipe 203 of sludge incinerator 200, and the hot water that inserts rising pipe 203 is as thermal source.The 3rd surface cooler 143 can adopt Surface Air Cooler, inserts low-temperature receiver, and the water outlet that for example inserts the municipal sewage plant is as low-temperature receiver; Certainly, also can adopt other forms of low temperature cold source, like river, seawater or the like; Play moisture in the condensation air, realize dehumidifying.Certainly, on the pipeline of the sewage that inserts the municipal sewage plant, be provided with sump pump 141, so that circulation power to be provided.
This second blower fan 134 and second surface cooler 136 and the 3rd surface cooler 143 are separately positioned on the both sides of the second mud supporting plate 132; The air that second blower fan 134 is seen off forms recirculating airs through the second mud supporting plate, 132 tops, the 3rd surface cooler 143, second surface cooler 136 successively, and mud is carried out mummification.
Concrete, second blower fan 134 sucks the air of warm wind in second surface cooler 136 is heated into, after the pressurization; Be sent to the top of the second mud supporting plate 132, owing to have hot water constantly to heat in the second mud supporting plate 132, heat passes to mud and air through the second mud supporting plate 132; Mud gets hot back moisture evaporation; The part sensible heat is also passed to air, makes AT raise, and absolute moisture content raises; Sludge Surface has second blower fan 134 to blow to such an extent that middle warm air is blown over the wind speed of 2-5m/s again, further the moisture evaporation of accelerate sludge.The air that De Rede wets becomes the air of low temperature and low humidity through the 3rd surface cooler 143 cool-down dehumidifications of the installation of tilting, and realizes that moisture separates from air, realizes that wind circulates.And the water of condensation of the 3rd surface cooler 143 surface formation etc., discharge through second hydathode 139.
This second hydathode 139 is relative with the 3rd surface cooler 143, is used to collect the 3rd surface cooler 143 water of condensation, and discharges second shell 131.Understandable, this second hydathode 139 can adopt the structure similar with first hydathode 119.
Understandable, this first mud-scraping mechanism 113 and second mud-scraping mechanism 133 can adopt essentially identical structure, are separately positioned on the top of the first mud supporting plate 112 and the second mud supporting plate 132, mainly play promotion mud and move forward.In the present embodiment, these mud-scraping mechanisms comprise motor, are installed in retarding mechanism on the motor output shaft, driven the transmission rig that rotates and driven the cleaning shoe that moves by transmission rig by retarding mechanism.Understandable, this transmission rig can adopt sprocket wheel, pulley etc., and cleaning shoe is fixed on the transmission rig, and when transmission rig rotated, the cleaning shoe movement therewith drove the mud reach.In addition, can the spacing of cleaning shoe be arranged on suitable scope, make mud in proal process, can realize constantly stirring, make sludge drying to carry out more uniformly.Certainly, mud-scraping mechanism can also adopt existing other structure formations, and unrestricted.
Understandable, corresponding by-pass valve control can be set in above-mentioned connecting tube, control the circulation of hot water.System is then controlled the work of above-mentioned sludge incinerator 200, hot water circulting pump 204, valve, compressor 121, blower fan etc., and this is to control according to the operating mode of reality, does not give unnecessary details at this.Further, can control hot water and get into different mummification modules, realize adapting to the adjustment of different operating modes through by-pass line and bypath valve 208 are set.
Adopt the sludge drying method of said system: the domestic sludge of water cut about 80% is pushed into the I section mummification district that is made up of first first sludge drying module 110 by the even charger of mud; Mud utilizes apparatus for evaporation condensation, first surface cooler 116, recirculating air etc. to carry out the heating and dehumidification mummification on the first mud supporting plate 112; And mud constantly moves to the II section mummification district that is made up of second first sludge drying module 110 under the promotion of first mud-scraping mechanism 113.Concrete, the heat of the water cooled condenser 122 of apparatus for evaporation condensation is given mud through these first mud supporting plate, 112 conduction, thus heating mud; Air through first surface cooler 116 be heated into first temperature in warm wind, and have first blower fan 114 to siphon away, after first blower fan 114 pressurizes, in warm wind be sent to the top of the first mud supporting plate 112, take away the mud moisture evaporated; Absorb airborne sensible heat and latent heat by vaporizer 123 then; The temperature and the regain of air are reduced simultaneously; Become the cryogenic air of low humidity, the reduction of temperature makes airborne large quantity of moisture be separated, and forms water of condensation on vaporizer 123 surfaces; Water of condensation is discharged this first shell 111 through hydathode, accomplishes dehumidifying.
Mummification limit, mud limit is advanced to the first sludge drying module of next stage, and the mud operating mode that arrives the II section changes (mummification more easily becomes), blows in Sludge Surface with the recirculating air of second temperature; Mud continues to be urged into, and continues by mummification, gets into the III section, blows in Sludge Surface with the recirculating air of second temperature; II section, III section and the mummification in like manner of I section (understandable, the centre can be provided with the more first sludge drying module 110 as required).Because these first surface coolers 116 are to be connected in series; Make lower in water temperature, higher near the water temperature of first surface cooler 116 of sludge incinerator 200 near first surface cooler 116 of the position of sewage sludge feed, thereby the temperature of the recirculating air of every next stage also is rising gradually;
At last; Mud gets into the IV section mummification district that is made up of the second sludge drying module 130; Utilize the dehumidifying mummification that heat up such as second surface cooler 136, the 3rd surface cooler 143 and recirculating air; This section mud gets hot maximum, and heated mud temperature is the highest, and the temperature of the recirculating air of the 3rd temperature is moderate, mud is the easiest in mummification; The 3rd temperature is higher than the temperature of recirculating air of the first sludge drying module of upper level.Through the mummification of I, II, III, IV section, the final water ratio of mud is reduced to 35-45%, can directly burn; Certainly, also can be used as agricultural fertile raw material etc.
Mud after the mummification can be transferred to sludge incinerator 200 and burn; The incendiary heat partly is used for the vaporization of mud moisture; Boil-off effluxes atmosphere with chimney 205, and part is used for the external heat radiation of sludge incinerator 200 and chimney 205 itself, and part is used for the recovery of heat of heat regenerator 201.The a small amount of ashes of burning residue are harmless, do general the processing and get final product.The heat of recovery of heat is used for about heating cycle hot water to 90 ℃; Transfer to sludge drying machine 100 through hot water circulting pump 204; Successively be used for the mud heating of mummification IV district, the recirculating air heating of IV section and III, II, 116 pairs of recirculating airs of I section first surface cooler and heat, last water temperature is got back to heat regenerator 201 when 45 ℃ of left and right sides; Reclaim the sludge incineration waste heat, improve thermo-efficiency.
As shown in Figure 5, be the synoptic diagram that adopts the sludge drying machine 100 of one first sludge drying module 110 and one second sludge drying module 130 butt joint compositions, its structure and front are described basic identical, so do not give unnecessary details.Understandable, the quantity of the first sludge drying module 110 and the second sludge drying module 130 can be selected as required.
As shown in Figure 6, be another embodiment of sludge drying system of the present invention.When a plurality of first sludge drying modules and the second sludge drying module connect to form sludge drying and incineration system of the present invention; The shell 310 of all mummification modules (comprising said first shell in front and second shell) can be made a shell; So only need mud import 311 be set, in the exit of last mummification module sludge outlet 312 be set and get final product at the feed entrance point place of shell.
Further, between adjacent mummification module, be provided with division plate 313, avoid the wind of leaping up of recirculating air, division plate 313 is provided with the perforate 314 that supplies mud to pass through, and makes the mud successive pass through the mud supporting plate of each module.
As shown in Figure 7, the mud-scraping mechanism of present embodiment can adopt a successive mud-scraping mechanism 315, replaces the first above-mentioned mud-scraping mechanism and second mud-scraping mechanism, the pushing ahead of convenient mud.
It is basic identical that other structures of present embodiment and a last embodiment put down in writing, so do not give unnecessary details.
Understandable, above embodiment has only expressed preferred implementation of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention; Should be noted that; For the person of ordinary skill of the art, under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement; For example first blower fan 114, the quantity of second blower fan 134, position; The quantity of the valve on the pipeline, position, the form of condensing surface 122, vaporizer, surface cooler etc., quantity or the like can be adjusted as requested, and these all belong to protection scope of the present invention; Therefore, all equivalents and modifications of being done with claim scope of the present invention all should belong to the covering scope of claim of the present invention.
Claims (10)
1. a sludge drying and incineration system is characterized in that, comprises sludge drying machine and thermal source;
Said sludge drying machine comprises at least one first sludge drying module; The said first sludge drying module comprises first shell of the sealing that is provided with mud import and sludge outlet, the first mud supporting plate that is arranged on heat conduction between said mud import and the sludge outlet, first mud-scraping mechanism, first blower fan of above the said first mud supporting plate, drying, the apparatus for evaporation condensation that are arranged on said first mud supporting plate top and first surface cooler that is connected with said thermal source;
Said apparatus for evaporation condensation comprises the compressor, condensing surface and the vaporizer that connect into the loop, the refrigerant and the hydathode of internal recycle in said loop; Said hydathode cooperates with said vaporizer and the water of condensation of said vaporizer is discharged said first shell;
Said condensing surface is positioned at said first mud supporting plate below and heat is passed to the said first mud supporting plate; The said vaporizer and first blower fan are positioned at the both sides of the said first mud supporting plate, and said first surface cooler is between the said vaporizer and first blower fan; The air that said first blower fan is seen off forms recirculating air through the said first mud supporting plate top, vaporizer, first surface cooler successively.
2. sludge drying and incineration system according to claim 1 is characterized in that, the said first mud supporting plate is the flat board of hollow;
Said condensing surface is the water cooled condenser that is arranged in the said first mud supporting plate; Be filled with the media of the heat that absorbs said water cooled condenser in the said first mud supporting plate.
3. sludge drying and incineration system according to claim 1 is characterized in that, said sludge drying machine also comprises at least one second sludge drying module; The said second sludge drying module comprises second shell of the sealing that is provided with mud import and sludge outlet, the second mud supporting plate that is arranged on heat conduction between said mud import and the sludge outlet, second mud-scraping mechanism that is arranged on said second mud supporting plate top, second blower fan of above the said second mud supporting plate, drying, second surface cooler that is connected with said thermal source and the 3rd surface cooler that inserts low-temperature receiver; Be provided with second hydathode with said the 3rd surface cooler relative position; The air that said second blower fan is seen off forms circulation through said second mud supporting plate top, the 3rd surface cooler and second surface cooler successively.
4. sludge drying and incineration system according to claim 3 is characterized in that, the said second mud supporting plate is the flat board of hollow; Be provided with the runner that inserts said thermal source in the said second mud supporting plate.
5. according to claim 3 or 4 described sludge drying and incineration systems, it is characterized in that said thermal source comprises sludge incinerator, is arranged on the heat regenerator in the said sludge incinerator, water inlet pipe and the rising pipe that is connected with said heat regenerator; On the said rising pipe hot water circulting pump is set;
Said rising pipe is communicated with the runner of said first surface cooler, second surface cooler, the second mud supporting plate, sends into hot water.
6. sludge drying and incineration system according to claim 5 is characterized in that, the water outlet of the runner of said first surface cooler, second surface cooler, the second mud supporting plate is communicated with the water inlet pipe of said heat regenerator.
7. sludge drying and incineration system according to claim 5 is characterized in that, said sludge drying machine comprises a plurality of said first sludge drying module and said second sludge drying module that is connected; The sludge outlet and the mud import of the said a plurality of first sludge drying module and the second sludge drying module are docked successively; Perhaps; Second shell of first shell of the said first sludge drying module and the second sludge drying module is a unsplit casing; And, on the said dividing plate opening is set between the adjacent said first sludge drying module, between the adjacent said first sludge drying module and the second sludge drying module dividing plate is set;
The water outlet of said rising pipe flow through successively second surface cooler of the said second sludge drying module, first surface cooler of a plurality of said first sludge drying modules that are connected in series.
8. a sludge drying machine is characterized in that, comprises at least one first sludge drying module; The said first sludge drying module comprise first shell, the first mud supporting plate that is arranged on heat conduction between said mud import and the sludge outlet that is provided with the sealing of mud import and sludge outlet, first mud-scraping mechanism that is arranged on said first mud supporting plate top, first blower fan of above the said first mud supporting plate, drying, apparatus for evaporation condensation and with first surface cooler that heat is provided;
Said apparatus for evaporation condensation comprises compressor, condensing surface, vaporizer and the hydathode that connects into the loop;
Said condensing surface is positioned at said first mud supporting plate below and heat is passed to the said first mud supporting plate; The said vaporizer and first blower fan are positioned at the both sides of the said first mud supporting plate, and said first surface cooler is between the said vaporizer and first blower fan; The air that said first blower fan is seen off forms circulation through the said first mud supporting plate top, vaporizer, first surface cooler successively; Said hydathode cooperates with said vaporizer and the water of condensation of said vaporizer is discharged said first shell.
9. sludge drying machine according to claim 8 is characterized in that, also comprises at least one second sludge drying module; The said second sludge drying module comprises second shell that is provided with mud import and sludge outlet sealing, the second mud supporting plate that is arranged on heat conduction between said mud import and the sludge outlet, second mud-scraping mechanism that is arranged on said second mud supporting plate top, second blower fan of above the said second mud supporting plate, drying, second surface cooler that heat is provided and the 3rd surface cooler that inserts low-temperature receiver; Be provided with second hydathode with said the 3rd surface cooler relative position; The air that said second blower fan is seen off forms circulation through said second mud supporting plate top, the 3rd surface cooler and second surface cooler successively.
10. one kind is used each the sludge drying method of sludge drying and incineration system of claim 1-7; It is characterized in that; May further comprise the steps: S1: mud gets into first first sludge drying module; And by the heating of the water cooled condenser of said first first sludge drying module, and blow in Sludge Surface with the recirculating air of first temperature; And recirculating air is dehumidified by the vaporizer of said first first sludge drying module;
S2: the mud through step S1 mummification gets into next first sludge drying module, and is heated by the water cooled condenser of said next first sludge drying module, and blows in Sludge Surface with the recirculating air of second temperature; This second temperature is higher than first temperature; And recirculating air is dehumidified by the vaporizer of said next first sludge drying module; Mud gets into the next stage first sludge drying module successively, and the recirculating air temperature of every next stage is higher than upper level recirculating air temperature;
S3: the mud through step S2 mummification gets into the second sludge drying module, and heats through the second mud supporting plate of the said second sludge drying module, and blows in Sludge Surface with the recirculating air of the 3rd temperature; The 3rd temperature is higher than the temperature of recirculating air of the first sludge drying module of upper level; And recirculating air is dehumidified through the 3rd surface cooler.
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| CN201110067528A CN102180578B (en) | 2011-03-21 | 2011-03-21 | Sludge drying and incinerating system, sludge drying machine and sludge drying method |
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| CN201110067528A CN102180578B (en) | 2011-03-21 | 2011-03-21 | Sludge drying and incinerating system, sludge drying machine and sludge drying method |
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| CN104129896B (en) * | 2014-07-25 | 2017-04-05 | 华南理工大学 | A kind of sludge heat pump drying device |
| CN105753293B (en) * | 2016-04-18 | 2018-09-14 | 南通爱可普环保设备有限公司 | Skid-mounted thermal energy self-loopa sludge drying system device |
| CN107382012A (en) * | 2017-08-02 | 2017-11-24 | 东莞市绿革环保科技有限公司 | Segmented sludge dry system |
| EP3814711A2 (en) * | 2018-06-29 | 2021-05-05 | Solwa S.r.l. | A drying apparatus for wet matrices and a relative drying method of wet matrices |
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| CN1899988A (en) * | 2005-07-19 | 2007-01-24 | 中国科学院工程热物理研究所 | Method for burning treating wet waste mud with waste heat recovering |
| CN201037728Y (en) * | 2007-04-28 | 2008-03-19 | 绍兴水处理发展有限公司 | Combined sludge drying device |
| CN101618931A (en) * | 2009-07-28 | 2010-01-06 | 清华大学 | Mud drying and incinerating integrated system and use method thereof |
| CN202054721U (en) * | 2011-03-21 | 2011-11-30 | 深圳市极水实业有限公司 | Sludge drying and incinerating system and sludge drying machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61209099A (en) * | 1985-03-09 | 1986-09-17 | Kawasaki Heavy Ind Ltd | Method and apparatus for drying and incinerating sludge |
| JPH11197699A (en) * | 1998-01-07 | 1999-07-27 | Mitsubishi Electric Corp | Sludge dryer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1899988A (en) * | 2005-07-19 | 2007-01-24 | 中国科学院工程热物理研究所 | Method for burning treating wet waste mud with waste heat recovering |
| CN201037728Y (en) * | 2007-04-28 | 2008-03-19 | 绍兴水处理发展有限公司 | Combined sludge drying device |
| CN101618931A (en) * | 2009-07-28 | 2010-01-06 | 清华大学 | Mud drying and incinerating integrated system and use method thereof |
| CN202054721U (en) * | 2011-03-21 | 2011-11-30 | 深圳市极水实业有限公司 | Sludge drying and incinerating system and sludge drying machine |
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| JP特开平11-197699A 1999.07.27 |
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Address after: Nanshan District Shenzhen City, Guangdong Province, 518057 North Road No. 9116 Fu technology building A block 305-308 room on the third floor Patentee after: Shenzhen Watech Co., Ltd. Address before: 518057 Guangdong city of Shenzhen province Nanshan District high in the four Longtaili technology building five floor No. 30 Patentee before: Shenzhen Watech Co., Ltd. |
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