CN102311216A - Separated thermal cycle sludge dry method and device thereof - Google Patents
Separated thermal cycle sludge dry method and device thereof Download PDFInfo
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- CN102311216A CN102311216A CN 201110241949 CN201110241949A CN102311216A CN 102311216 A CN102311216 A CN 102311216A CN 201110241949 CN201110241949 CN 201110241949 CN 201110241949 A CN201110241949 A CN 201110241949A CN 102311216 A CN102311216 A CN 102311216A
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Abstract
The invention relates to a treatment technique of sludge produced by sewage treatment, in particular to a separated thermal cycle sludge dry method and a device thereof. The method comprises the following steps: putting wet sludge in a drying tank for drying, leading out the steam produced by drying through a fan, letting the steam enter an evaporator be condensed into water, letting the peripheral water of tubes as working fluid be subject to evaporation to generate secondary steam, compressing the secondary steam by a vapor compressor to heat, then putting the secondary steam processed by heating as an outer heating source of the drying tank in a heat transfer of the drying tank; supplying heat to sludge indirectly, letting the steam after the heat supply be condensed into water, letting the water enter the evaporator through the heat absorption of the tubes of the combustion furnace to form a closed cycle of the working fluid. According to the invention, evaporation latent heat of water and heat value of non-condensable gas are fully recycled, to that the energy consumption is minimized; and because of the isolation effect of the evaporator, the vapor compressor is separated from the products formed by anhydration of the sludge, so that the system can stably run in long-term, and the investment cost is greatly reduced.
Description
Technical field
The present invention relates to sludge produced by sewage treatment is carried out Treatment Technology, further be meant isolated thermal cycling sludge drying method and device.
Background technology
Say very clearly in China's 863 Program technical field of resource environments " sludge from wastewater treatment plant is handled safe disposal gordian technique and equipment " main project guide for application; Along with popularizing and operation of China municipal sewage plant; Sludge from wastewater treatment plant output increases fast; How to solve the disposal outlet of mud, become the great environmental problem that needs to be resolved hurrily in China's urban development process.Research and development are fit to sludge from wastewater treatment plant China's national situation, that have independent intellectual property right and handle gordian technique and equipment, are the active demands of China environmental protection, and are significant to the international competitiveness that promotes the Environmental Protection in China industry simultaneously.
Sludge treatment, what at first face is how the sludge drying of water cut about 80% to be become the dewatered sludge of water cut below 50%.Domestic and international existing mummification equipment all is to adopt outer heat to realize this point at present for this reason, and this needs the labor energy, and working cost is quite expensive.Be to reduce energy cost, have with the mud self-digestion after the mummification as the replenishing of the energy, but this is still a kind of consumption of the valuable energy, and has increased a large amount of CO for sludge drying
2Discharging.
In drying process, how reducing energy consumption significantly should be the first-class significant problem of disposing sludge mummification.For this reason, Guo Shaoyi has proposed the application for a patent for invention of " air sucking and pressing type high-efficiency energy-saving instant quick low-temperature sludge drying, disinfecting fresh-keeping treating method and device " in November, 2009.And having obtained approval in 2011, the patent No. is 200910044689.7.The core concept of this device is to adopt " thermal cycling technology " to realize sludge drying.Promptly in solid-liquid separation, compress the intensification of boosting through vapour compressor, send back to again in the drying chamber, wet mud is carried out indirect heating, the moisture content in the wet mud is further evaporated, realize thermal cycling with this through the water vapour that adds thermogenesis.This method is through behind the pipeline start up by preheating; As long as the vapour compressor energy that constantly replenishes in service is enough to offset the heat lost by radiation of outwardness in the entire work process and the thermosteresis that product is taken out of; And raw feed preheating institute heat requirement sum, then should circulate just can long-term operation.Therefore, reducing heat lost by radiation as far as possible, improving product and take out of under the pick up the heat condition, the energy that compressor need replenish is few.This thought through mechanical vapour compressor realization thermal cycling (the being called for short MVR) application of in sea water desaltination, having succeeded shows that according to pertinent data its running cost is minimum than other method.This technology is applied to mud, is the same on the principle.Just because mud is different from seawater, and the latter is a fluidised form, and dried matter is seldom, and is cleaner, and the mud very high immobility material that is water-content, dried matter is higher relatively.In the drying process, the steam that is produced contains a large amount of not condensable gases, and takes many dirts out of attached on pipeline and the equipment inwall, and has certain corrodibility, has a strong impact on the operation of vapour compressor.In addition, there is a high bond regions in the mud drying process, makes design, manufacturing, the operation of drying plant bring very big difficulty.In addition, its heat conductance is poor, and heat-transfer effect is bad.
Summary of the invention
The technical problem that the present invention will solve is that the deficiency to prior art exists proposes isolated thermal cycling sludge drying method and device, handles required energy consumption with further raising efficiency of heat cycle, reduction, realizes continuity work.
Technical scheme of the present invention is that the process step of said isolated thermal cycling sludge drying method is:
(1) mud that will wet injects the drying installation mummification;
(2) wet mud is pumped to interchanger through steam and non-condensable gases that mummification produces through blower fan in drying installation, and the working-medium water lower with the heat exchanger tube peripheral temperature carries out heat exchange;
(3) steam is condensed into water droplet and gets into wet stock preheating transfer roller with non-condensable gases through the steam tripping device in interchanger; The water that vapor condensation becomes is to being injected into the wet mud preheating in the wet stock preheating transfer roller; Non-condensable gases gets into the heat exchange roasting kiln through steam tripping device pneumatic outlet and is burnt, and the heat that the non-condensable gases burning produces is transported to the heat exchange vaporizer;
(4) latent heat that the outer working-medium water of tubulation absorbs steam in the heat exchanger tube in the interchanger is vaporized into steam; This steam gets into the vapour compressor inlet mouth through the interchanger vapour outlet, and the outlet through vapour compressor after vapour compressor boosts intensification of this steam is transported in the drying installation;
(5) steam that gets in the drying installation conducts heat to mud; Make the moisture evaporation in the mud; Steam is condensed into water through heat exchange under pressure, water of condensation gets into heat exchange vaporizer inner chamber through the heat exchanging pipe of the water side entering heat exchange roasting kiln of drying installation behind the absorption heat;
(6) the wet mud after the preheating in the step (3) is injected the drying installation mummification.
One of technical scheme that realizes aforesaid method is; Said isolated thermal cycling sludge drying device; Comprise by frequency control motor driving disc type successive drying jar, heat exchange roasting kiln, heat exchange type vaporizer, vapour compressor, wet stock preheating transfer roller, steam tripping device, machine for mixing and stirring material, screening proportioner, the screw rod conveyor that care feed tray rotates that the bottom discharge mouth of doser links to each other through the opening for feed that the first continuous locking device is equipped with electromagnetic valve with disc type successive drying tank top; It is characterized in that; The vapour outlet of disc type successive drying jar is connected to the steam inlet of heat exchanging pipe in the heat exchange type vaporizer inner chamber through induced draft fan; The condensation-water drain of heat exchange type vaporizer heat exchanging pipe links to each other through the water of condensation import of steam tripping device with wet stock preheating transfer roller periphery chuck one end, and the said periphery chuck the other end is provided with condensation-water drain; The bottom discharge mouth that the top is provided with the wet stock preheating transfer roller of wet stock import connects with the opening for feed of material mixing and blending machine; The dewatered sludge outlet of disc type successive drying pot bottom is communicated to the opening for feed of screening blender loader successively through the second continuous locking device, second screw rod conveyor; First discharge port of screening blender loader is connected to the dry stock ground, and the returning charge discharge port of this screening blender loader is connected to the opening for feed of mixing of materials whisking appliance; Machine for mixing and stirring material bottom discharge mouth is communicated to the opening for feed of doser through first screw rod conveyor; The fuel gas inlet of heat exchange roasting kiln is communicated with the pneumatic outlet of steam tripping device; Two connectivity ports of the heat exchanging pipe in this heat exchange roasting kiln are connected with the heat transfer tube water side of the hollow hot-plate of arranging in the disc type successive drying jar of multilayer and the inner chamber water-in of heat exchange type vaporizer respectively; Heat exchange type vaporizer inner chamber is filled with heat-exchange working medium water; The inner chamber vapour outlet of heat exchange type vaporizer connects the steam inlet of vapour compressor, and the steam drain of vapour compressor connects the heat transfer tube admission end of the hollow hot-plate of multilayer in the disc type successive drying jar.
Referring to Fig. 1, the know-why and the operational process of the isolated thermal cycling sludge drying device of said structure of the present invention are:
The mud material that needs to handle gets into disc type successive drying jar 1 by doser 3 through the first continuous locking device 4, and frequency control motor 2 is used for changing the rate of advance of dry card material in the disc type successive drying jar 1; But doser 3 and frequency control motor 2 synchronous operations;
The steam that produces in the disc type successive drying jar 1 is pumped through induced draft fan 5 and the heat exchanging pipe of the heat exchange type vaporizer 7 of flowing through, and the working-medium water lower with the heat exchanging pipe peripheral temperature carries out heat exchange; Steam is condensed into that water droplet gets into through the steam tripping device in the periphery chuck of wet stock preheating transfer roller 17 and indirectly to wet mud preheating (this wet mud is sent in the wet stock preheating transfer roller 17 by wet stock import 18), the heat of partially recycled water of condensation is discharged through the condensation-water drain 19 of periphery chuck again;
In heat exchange type vaporizer 7 inner chambers, the peripheral working-medium water that injects of tubulation is vaporized because of absorbing the latent heat part that emits from the steam of disc type successive drying jar 1 new output in these row, forms new steam; This steam is admitted to the steam inlet of vapour compressor 10; Be compressed the intensification of boosting; Send into disc type successive drying jar 1 through its steam outlet as external heat source again; The heat transfer tube of the hollow hot-plate of multilayer through disc type successive drying jar 1 internal arrangement and indirectly heat being conducted to mud makes the moisture in the mud continue heating evaporation; Steam through this heat exchange heavily is condensed into water under certain pressure; And the water side of the heat transfer tube of the hollow hot-plate of multilayer through disc type successive drying jar 1 gets into the heat exchanging pipe of heat exchange roasting kiln 6; Get into heat exchange vaporizer 7 inner chambers behind the absorption portion heat, realize the closed cycle of working medium;
In heat exchange roasting kiln 6, the new non-condensable gases that produces is burnt in the drying sludge process, makes this waste gas make effective high temperature pyrolysis and handles back emptying; Utilize its calorific value to get into thermal cycling simultaneously, to reduce the power consumption of vapour compressor; Said non-condensable gases is by producing in the disc type successive drying jar 1 and with heat exchanging pipe, the steam tripping device steam outlet of steam through induced draft fan 5, heat exchange type vaporizer 7, introducing heat exchange roasting kiln 6 again and burn;
Sent into and sieve proportioner 12 through the second continuous locking device and second screw rod conveyor 11 by the dewatered sludge after the mummification through disc type successive drying jar 1; Screening proportioner 12 is with after the macrobead mud screening, and its thin mud gets into machine for mixing and stirring material 16 with the form of returning charge by a certain percentage, the thin dewatered sludge of remainder and send into dry stock ground 13 together than coarse particles; Wet mud after 17 preheatings of wet stock preheating transfer roller; In machine for mixing and stirring material 16, mix through stirring into loose and inadherent mixture, again through first screw rod conveyor 14, doser 3, the first continuous git 4, electromagnetic valve 8 entering disc type successive drying jars 1 with the dewatered sludge returning charge.
Two of technical scheme of the present invention is; Said isolated thermal cycling sludge drying device comprises software granulation desiccation machine, drives disc type successive drying jar, heat exchange roasting kiln, heat exchange type vaporizer, vapour compressor, wet stock preheating transfer roller, steam tripping device, screening proportioner, the screw rod conveyor that care feed tray rotates by frequency control motor; It is characterized in that; The vapour outlet of the vapour outlet of software granulation desiccation machine and disc type successive drying jar is connected to the steam inlet of heat exchanging pipe in the heat exchange type vaporizer inner chamber respectively through induced draft fan; The condensation-water drain of heat exchange type vaporizer heat exchanging pipe links to each other through the water of condensation import of steam tripping device with wet stock preheating transfer roller periphery chuck one end, and the said periphery chuck the other end is provided with condensation-water drain; The bottom discharge mouth that the top is provided with the wet stock preheating transfer roller of wet stock import connects with the opening for feed of software granulation desiccation machine; The dewatered sludge outlet of software granulation desiccation machine bottom is communicated to the opening for feed of disc type successive drying jar through the 3rd screw rod conveyor; The fuel gas inlet of heat exchange roasting kiln is communicated with first steam outlet of steam tripping device; A port in two connectivity ports of the heat exchanging pipe in this heat exchange roasting kiln is connected with the heat transfer tube water side of the hollow hot-plate of arranging in the disc type successive drying jar of multilayer, the water side of software granulation desiccation machine and the condensation-water drain of air preheater respectively; Another port connects with the inner chamber water-in of heat exchange type vaporizer; Heat exchange type vaporizer inner chamber is filled with heat-exchange working medium water; The inner chamber vapour outlet of heat exchange type vaporizer connects the steam inlet of vapour compressor; The venting port of vapour compressor connects the heat transfer tube inlet end of the hollow hot-plate of multilayer in the disc type successive drying jar, the inlet end and the air preheater inlet mouth of software granulation desiccation machine respectively; The inner chamber inlet mouth of air preheater is communicated with second steam outlet of steam tripping device, and the steam output end of air preheater is communicated with the steam inlet of software granulation desiccation machine; The dewatered sludge outlet of disc type successive drying pot bottom connects the continuous locking device and second screw rod conveyor successively.
Referring to Fig. 2, the know-why and the operational process of the isolated thermal cycling sludge drying device of said structure of the present invention are:
The mud material that needs to handle gets into software granulation desiccation machine 21 through the opening for feed of software granulation desiccation machine 21, is delivered to the opening for feed of disc type successive drying jar through the 3rd screw rod conveyor through the material of software granulation desiccation machine 21 mummification;
Frequency control motor 2 is used for changing the rate of advance of dry card material in the disc type successive drying jar 1;
The steam that produces in software granulation desiccation machine 21 and the disc type successive drying jar 1 is pumped through induced draft fan 5 respectively and the heat exchanging pipe of the heat exchange type vaporizer 7 of flowing through, and the working-medium water lower with the heat exchanging pipe peripheral temperature carries out heat exchange; Steam is condensed into water droplet and gets into through the steam tripping device in the periphery chuck of wet stock preheating transfer roller 17 and indirectly to wet mud preheating (this wet mud is sent in the wet stock preheating transfer roller 17 by wet stock import 18), and the heat of partially recycled water of condensation is condensation-water drain 19 discharges through the periphery chuck again;
In heat exchange type vaporizer 7 inner chambers, the peripheral working-medium water that injects of tubulation is vaporized because of absorbing the latent heat part that emits from the steam of disc type successive drying jar 1 new output in this tubulation, forms new steam; This steam is admitted to the steam inlet of vapour compressor 10; Be compressed the intensification of boosting; Send into software granulation desiccation machine 21, disc type successive drying jar 1 and air preheater through its steam outlet respectively as external heat source again; Send into through rotary joints in the software granulation desiccation machine 21 roll and disc type successive drying jar 1 internal arrangement the hollow hot-plate of multilayer heat transfer tube and indirectly heat is conducted to mud, make the moisture continuation heating evaporation in the mud; Steam through this heat exchange heavily is condensed into water under certain pressure; And the heat exchanging pipe of the water side entering heat exchange roasting kiln 6 of the heat transfer tube of the hollow hot-plate of multilayer of water side through software granulation desiccation machine 21 and disc type successive drying jar 1; Get into heat exchange vaporizer 7 inner chambers behind the absorption portion heat, realize the closed cycle of working medium;
In software granulation desiccation machine 21 and heat exchange roasting kiln 6, the new non-condensable gases that produces is burnt in the drying sludge process, makes this waste gas make effective high temperature pyrolysis and handles back emptying; Utilize its calorific value to get into thermal cycling simultaneously, to reduce the power consumption of vapour compressor; Said non-condensable gases by produce in software granulation desiccation machine 21 and the disc type successive drying jar 1 and with steam through the heat exchanging pipe of induced draft fan 5, heat exchange type vaporizer 7, the steam outlet of steam tripping device; The on-condensable gas of telling from the steam tripping device is most of get into air preheater 23 after; Through temperature raising; Send in the software granulation desiccation machine 21 with the form of hot blast; Wet mud is carried out mummification, and the few part in the steam tripping device 14 not condensable gases is admitted to roasting kiln 6 burning back dischargings, and reclaims its calorific value and get into thermal cycling.
Know by above; The present invention is isolated thermal cycling sludge drying method and device; It has realized thermal cycling through vapour compressor, and through the heat exchange type vaporizer air-flow and the working-medium water in the thermal cycling that mummification in the drying chamber produces is isolated, but makes the equipment long-period stable operation.The new not condensable gases that produces of disc type successive drying jar is carried out pyrolysis processing through the heat exchange roasting kiln, and reclaim its calorific value and get into thermal cycling, significantly improved efficiency of heat cycle, further reduced the required energy consumption of sludge treatment.
Description of drawings
Fig. 1 is the theory structure synoptic diagram of the isolated thermal cycling sludge drying device of first kind of structure formation of the present invention; In the drawings:
1-disc type successive drying jar, the 2-frequency control motor, the 3-doser,
The 4-first continuous locking device, the 5-induced draft fan, 6-heat exchange roasting kiln,
7-heat exchange type vaporizer, the 8-electromagnetic valve, the 9-inlet of cold air,
The 10-vapour compressor, 11-second screw rod conveyor, 12-sieves proportioner,
13-dry stock ground, 14-first screw rod conveyor, the 15-electric heater,
The 16-machine for mixing and stirring material, 17-wet stock preheating transfer roller,
18-wet stock inlet, the 19-condensation-water drain, 20-steam tripping device,
24-controls cabinet;
Fig. 2 is the theory structure synoptic diagram of the isolated thermal cycling sludge drying device of second kind of structure formation of the present invention; In the drawings:
1-disc type successive drying jar, 2-frequency control motor, 5-induced draft fan, 6
-heat exchange roasting kiln, 7-heat exchange type vaporizer, 8-electromagnetic valve, 9
-inlet of cold air, the 10-vapour compressor, 11-second screw rod conveyor,
13-dry stock ground, the 15-electric heater, 17-wet stock preheating transfer roller,
18-wet stock inlet, 19-condensation-water drain, 20-steam tripping device.
21-software granulation desiccation machine, 22-the 3rd screw rod conveyor,
23-steam tripping device, 24-controls cabinet.
Embodiment
Embodiment 1: a kind of isolated thermal cycling sludge drying method, and the process step of this method is:
(1) mud that will wet injects the drying installation mummification;
(2) wet mud is pumped to interchanger through steam and non-condensable gases that mummification produces through blower fan in drying installation, and the working-medium water lower with the heat exchanger tube peripheral temperature carries out heat exchange;
(3) steam is condensed into water droplet and gets into wet stock preheating transfer roller with non-condensable gases through the steam tripping device in interchanger; The water that vapor condensation becomes is to being injected into the wet mud preheating in the wet stock preheating transfer roller; Non-condensable gases gets into the heat exchange roasting kiln through steam tripping device pneumatic outlet and is burnt, and the heat that the non-condensable gases burning produces is transported to the heat exchange vaporizer;
(4) latent heat that the outer working-medium water of tubulation absorbs steam in the heat exchanger tube in the interchanger is vaporized into steam; This steam gets into the vapour compressor inlet mouth through the interchanger vapour outlet, and steam outlet through vapour compressor after vapour compressor boosts intensification is transported in the drying installation;
(5) steam that gets in the drying installation conducts heat to mud; Make the moisture evaporation in the mud; Steam is condensed into water through heat exchange under pressure, water of condensation gets into heat exchange vaporizer inner chamber through the heat exchanging pipe of the water side entering heat exchange roasting kiln of drying installation behind the absorption heat;
(6) the wet mud after the preheating in the step (3) is injected the drying installation mummification.
Embodiment 2: as shown in Figure 1; A kind of isolated thermal cycling sludge drying device; Comprise by frequency control motor 2 driving disc type successive drying jar 1, heat exchange roasting kiln 6, heat exchange type vaporizer 7, vapour compressor 10, wet stock preheating transfer roller 17, steam tripping device 20, machine for mixing and stirring material 16, screening proportioner 12, the screw rod conveyor that care feed tray rotates, the bottom discharge mouth of doser 3 links to each other through the opening for feed that the first continuous locking device 4 is equipped with electromagnetic valve 8 with disc type successive drying jar 1 top; The vapour outlet of disc type successive drying jar 1 is connected to the steam inlet of heat exchanging pipe in heat exchange type vaporizer 7 inner chambers through induced draft fan 5; The condensation-water drain of heat exchange type vaporizer 7 heat exchanging pipes links to each other through the water of condensation import of steam tripping device 20 with wet stock preheating transfer roller 17 periphery chucks one end, and the said periphery chuck the other end is provided with condensation-water drain 19; The bottom discharge mouth that the top is provided with the wet stock preheating transfer roller 17 of wet stock import 18 connects with the opening for feed of material mixing and blending machine 16; The dewatered sludge outlet of disc type successive drying jar 1 bottom is communicated to the opening for feed of screening blender loader 12 successively through the second continuous locking device, second screw rod conveyor 11; First discharge port of screening blender loader 12 is connected to dry stock ground 13, and the returning charge discharge port of this screening blender loader 12 is connected to the opening for feed of mixing of materials whisking appliance 16; Machine for mixing and stirring material 16 bottom discharge mouths are communicated to the opening for feed of doser 3 through first screw rod conveyor 14; The fuel gas inlet of heat exchange roasting kiln 6 is communicated with the pneumatic outlet of steam tripping device 20; Two connectivity ports of the heat exchanging pipe in this heat exchange roasting kiln 6 are connected with the heat transfer tube water side of the hollow hot-plate of arranging in the disc type successive drying jar 1 of multilayer and the inner chamber water-in of heat exchange type vaporizer 7 respectively; Heat exchange type vaporizer 7 inner chambers are filled with heat-exchange working medium water; The inner chamber vapour outlet of heat exchange type vaporizer 7 connects the steam inlet of vapour compressor 10, and the steam drain of vapour compressor 10 connects the heat transfer tube admission end of the hollow hot-plate of multilayer in the disc type successive drying jar 1.
Referring to Fig. 1, heat exchange type vaporizer 7 can be provided with inlet of cold air 9, electric heater 15 so that system warm-up is used when driving.Inlet of cold air 9 can be located at heat exchange type vaporizer 7 tops one side, and electric heater 15 can be located at heat exchange type vaporizer 7 bottoms.
Each processing unit is the parameter measure control device of configurable necessity all, and realizes total system technological operation automatic control and metering through controling cabinet 20.
Said disc type successive drying jar 1 adopts prior art products (domestic have the man professional production manufacturer production of number) or self-control; For example, can adopt the product of the big chemical plant of Shijiazhuang worker factory.
The structure of said screening proportioner 12 can be, the outsourcing vibratory screening apparatus, but its thin material outlet adds the distributing damper of manual setting, can reach the function of adjustment material proportion.
But machine for mixing and stirring material 16 type selecting outsourcings, but the outsourcing of steam tripping device type selecting, but first screw rod conveyor 14 and the 11 equal type selecting outsourcings of second screw rod conveyor.
Wet stock preheating transfer roller 17 can add water jacket in existing screw rod conveyor periphery and form.
Two continuous locking devices adopt commercial product.
The structure of heat exchange type vaporizer 7 can be, a cylindrical shell is arranged, this cylinder lumen dress heat exchanging pipe, and cylinder lumen top is installed in order to the multilayer of removing droplet and is intersected swash plate; The gas that is evaporated from disc type successive drying jar 1; Heat exchanging pipe heat exchange through in this heat exchange type vaporizer 7 is cooled; Make water vapor condensation Cheng Shui discharge its vaporization heat; And make the peripheral working-medium water evaporation of tubulation produce secondary steam, intersect swash plate through the multilayer on heat exchange type vaporizer 7 tops then and remove behind the droplet import that vapour compressor is delivered in the air outlet of portion from it.
Heat exchange roasting kiln 6 can adopt the device with domestic gas-fired water heater same principle structure, also available general gas burner repacking, on add the tubulation heat exchange.Tail gas is guided the eminence discharging into flue.
Electric heater adopts the assembling of outsourcing electric heating tube.
Said apparatus of the present invention calculates with the wet mud of 1 ton of water cut 80% of mummification per hour, and the product water cut after the mummification is below 30%, the about 115m of cored slab single face heat transfer area in the disc type successive drying jar 1
2, the siccative operational throughput and the industrial treatment amount of said screw rod conveyor are 1.2T/h; The treatment capacity of machine for mixing and stirring material 16 is at 2T/h, heat exchange type vaporizer 7 tubulation heat interchanging area 130m
2The inspiratory capacity of vapour compressor 10 is 40m
3/ h, under the standard state, induced draft fan 5 air inputs are greater than 80m
3/ h boosts above 20KPa, can select centrifugal fan or roots blower for use.
Embodiment 3: as shown in Figure 2; A kind of isolated thermal cycling sludge drying device comprises software granulation desiccation machine 21, drives disc type successive drying jar 1, heat exchange roasting kiln 6, heat exchange type vaporizer 7, vapour compressor 10, air preheater 23, wet stock preheating transfer roller 17, steam tripping device 20, screening proportioner 12, the screw rod conveyor that care feed tray rotates by frequency control motor 2; : the vapour outlet of the vapour outlet of software granulation desiccation machine 21 and disc type successive drying jar 1 is connected to the steam inlet of heat exchanging pipe in heat exchange type vaporizer 7 inner chambers respectively through induced draft fan 5; The condensation-water drain of heat exchange type vaporizer 7 heat exchanging pipes links to each other through the water of condensation import of steam tripping device with wet stock preheating transfer roller 17 periphery chucks one end, and the said periphery chuck the other end is provided with condensation-water drain 19; The bottom discharge mouth that the top is provided with the wet stock preheating transfer roller 17 of wet stock import 18 connects with the opening for feed of software granulation desiccation machine 21; The 21 bottom dewatered sludge outlets of software granulation desiccation machine are communicated to the opening for feed of disc type successive drying jar 1 through the 3rd screw rod conveyor 22; The fuel gas inlet of heat exchange roasting kiln 6 is communicated with first steam outlet of steam tripping device 20; A port in two connectivity ports of the heat exchanging pipe in this heat exchange roasting kiln 6 is connected with heat transfer tube water side, the water side of software granulation desiccation machine and the condensation-water drain of air preheater 23 of the hollow hot-plate of arranging in the disc type successive drying jar 1 of multilayer respectively; Another port connects with the inner chamber water-in of heat exchange type vaporizer 7; Heat exchange type vaporizer 7 inner chambers are filled with heat-exchange working medium water; The inner chamber vapour outlet of heat exchange type vaporizer 7 connects the steam inlet of vapour compressor 10; The venting port of vapour compressor 10 connects the heat transfer tube inlet end of the hollow hot-plate of multilayer in the disc type successive drying jar 1, the inlet end and air preheater 23 inlet mouths of software granulation desiccation machine 21 respectively; The inner chamber inlet mouth of air preheater 23 is communicated with second steam outlet of steam tripping device, and the steam output end of air preheater 23 is communicated with the steam inlet of software granulation desiccation machine 21; The dewatered sludge outlet of disc type successive drying jar 1 bottom connects the continuous locking device and second screw rod conveyor 11 successively.
It is a complete set of product of ZL200620149123.2 patent that software granulation desiccation machine system adopts the patent No..
Air preheater adopts the assembling of outsourcing electric heating tube.
Claims (5)
1. isolated thermal cycling sludge drying method is characterized in that the process step of this method is:
(1) mud that will wet injects the drying installation mummification;
(2) wet mud is pumped to interchanger through steam and non-condensable gases that mummification produces through blower fan in drying installation, and the working-medium water lower with the heat exchanger tube peripheral temperature carries out heat exchange;
(3) steam is condensed into water droplet and gets into wet stock preheating transfer roller with non-condensable gases through the steam tripping device in interchanger; The water that vapor condensation becomes is to being injected into the wet mud preheating in the wet stock preheating transfer roller; Non-condensable gases gets into the heat exchange roasting kiln through steam tripping device pneumatic outlet and is burnt, and the part heat that the non-condensable gases burning produces is transported to the heat exchange vaporizer;
(4) latent heat that the outer working-medium water of tubulation absorbs steam in the heat exchanger tube in the interchanger is vaporized into steam by part; This steam gets into the vapour compressor inlet mouth through the interchanger vapour outlet, and steam outlet through vapour compressor after vapour compressor boosts intensification is transported in the drying installation;
(5) steam that gets in the drying installation conducts heat to mud; Make the moisture evaporation in the mud; Steam is condensed into water through heat exchange under pressure, water of condensation gets into heat exchange vaporizer inner chamber through the heat exchanging pipe of the water side entering heat exchange roasting kiln of drying installation behind the absorption heat;
(6) the wet mud after the preheating in the step (3) is injected the drying installation mummification.
2. isolated thermal cycling sludge drying device; Comprise by frequency control motor (2) driving disc type successive drying jar (1), heat exchange roasting kiln (6), heat exchange type vaporizer (7), vapour compressor (10), wet stock preheating transfer roller (17), steam tripping device (20), machine for mixing and stirring material (16), screening proportioner (12), the screw rod conveyor that care feed tray rotates, the bottom discharge mouth of doser (3) links to each other through the opening for feed that the first continuous locking device (4) is equipped with electromagnetic valve (8) with disc type successive drying jar (1) top; It is characterized in that; The vapour outlet of disc type successive drying jar (1) is connected to the steam inlet of heat exchanging pipe in heat exchange type vaporizer (7) inner chamber through induced draft fan (5); The condensation-water drain of heat exchange type vaporizer (7) heat exchanging pipe links to each other through the water of condensation import of steam tripping device (20) with wet stock preheating transfer roller (17) periphery chuck one end, and the said periphery chuck the other end is provided with condensation-water drain (19); The bottom discharge mouth that the top is provided with the wet stock preheating transfer roller (17) of wet stock import (18) connects with the opening for feed of material mixing and blending machine (16); The dewatered sludge outlet of disc type successive drying jar (1) bottom is communicated to the opening for feed of screening blender loader (12) successively through the second continuous locking device, second screw rod conveyor (11); First discharge port of screening blender loader (12) is connected to dry stock ground (13), and the returning charge discharge port of this screening blender loader (12) is connected to the opening for feed of mixing of materials whisking appliance (16); Machine for mixing and stirring material (16) bottom discharge mouth is communicated to the opening for feed of doser (3) through first screw rod conveyor (14); The fuel gas inlet of heat exchange roasting kiln (6) is communicated with the pneumatic outlet of steam tripping device (20); Two connectivity ports of the heat exchanging pipe in this heat exchange roasting kiln (6) are connected with the heat transfer tube water side of the hollow hot-plate of arranging in the disc type successive drying jar (1) of multilayer and the inner chamber water-in of heat exchange type vaporizer (7) respectively; Heat exchange type vaporizer (7) inner chamber is filled with heat-exchange working medium water; The inner chamber vapour outlet of heat exchange type vaporizer (7) connects the steam inlet of vapour compressor (10), and the steam drain of vapour compressor (10) connects the heat transfer tube admission end of the hollow hot-plate of the interior multilayer of disc type successive drying jar (1).
3. according to the said isolated thermal cycling sludge drying device of claim 1, it is characterized in that said heat exchange type vaporizer (7) top one side is provided with inlet of cold air (9), heat exchange type vaporizer (7) bottom is provided with electric heater (15).
4. according to the said isolated thermal cycling sludge drying device of claim 1, it is characterized in that said heat exchange type vaporizer (7) has a cylindrical shell, this cylinder lumen dress heat exchanging pipe, and install in order to remove the multilayer intersection swash plate of droplet on cylinder lumen top.
5. an isolated thermal cycling sludge drying device comprises software granulation desiccation machine (21), drives disc type successive drying jar (1), heat exchange roasting kiln (6), heat exchange type vaporizer (7), vapour compressor (10), air preheater (23), wet stock preheating transfer roller (17), steam tripping device (20), screening proportioner (12), the screw rod conveyor that care feed tray rotates by frequency control motor (2); It is characterized in that; The vapour outlet of the vapour outlet of software granulation desiccation machine (21) and disc type successive drying jar (1) is connected to the steam inlet of heat exchanging pipe in heat exchange type vaporizer (7) inner chamber respectively through induced draft fan (5); The condensation-water drain of heat exchange type vaporizer (7) heat exchanging pipe links to each other through the water of condensation import of steam tripping device with wet stock preheating transfer roller (17) periphery chuck one end, and the said periphery chuck the other end is provided with condensation-water drain (19); The bottom discharge mouth that the top is provided with the wet stock preheating transfer roller (17) of wet stock import (18) connects with the opening for feed of software granulation desiccation machine (21); The dewatered sludge outlet of software granulation desiccation machine (21) bottom is communicated to the opening for feed of disc type successive drying jar (1) through the 3rd screw rod conveyor (22); The fuel gas inlet of heat exchange roasting kiln (6) is communicated with first steam outlet of steam tripping device (20); A port in two connectivity ports of the heat exchanging pipe in this heat exchange roasting kiln (6) is connected with heat transfer tube water side, the water side of software granulation desiccation machine (21) and the condensation-water drain of air preheater (23) of the hollow hot-plate of arranging in the disc type successive drying jar (1) of multilayer respectively; Another port connects with the inner chamber water-in of heat exchange type vaporizer (7); Heat exchange type vaporizer (7) inner chamber is filled with heat-exchange working medium water; The inner chamber vapour outlet of heat exchange type vaporizer (7) connects the steam inlet of vapour compressor (10); The venting port of vapour compressor (10) connects the heat transfer tube inlet end of the hollow hot-plate of the interior multilayer of disc type successive drying jar (1), the inlet end and air preheater (23) inlet mouth of software granulation desiccation machine (21) respectively; The inner chamber inlet mouth of air preheater (23) is communicated with second steam outlet of steam tripping device, and the steam output end of air preheater (23) is communicated with the steam inlet of software granulation desiccation machine (21); The dewatered sludge outlet of disc type successive drying jar (1) bottom connects continuous locking device and second screw rod conveyor (11) successively.
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| CN201110241949A CN102311216B (en) | 2011-08-23 | 2011-08-23 | Separated thermal cycle sludge dry method and device thereof |
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| CN201110241949A CN102311216B (en) | 2011-08-23 | 2011-08-23 | Separated thermal cycle sludge dry method and device thereof |
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| CN102674652A (en) * | 2012-04-26 | 2012-09-19 | 福建清道夫环保科技有限公司 | Circular waste gas crushing and drying equipment |
| CN103846055A (en) * | 2012-12-03 | 2014-06-11 | 福建新大陆环保科技有限公司 | Heat recovery method and system for recovering energy in water-rich biomass |
| CN104671633A (en) * | 2015-03-16 | 2015-06-03 | 天华化工机械及自动化研究设计院有限公司 | Steam condensate preheating and steam drying two-stage energy-saving sludge drying method |
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| CN107827334B (en) * | 2017-12-07 | 2023-11-17 | 毅康科技有限公司 | Sludge low-temperature heat drying equipment |
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| CN109399890B (en) * | 2018-12-26 | 2024-03-15 | 华润电力（海丰）有限公司 | Device and method for preventing mixed waste gas of sludge drying device from condensing |
| CN109761474A (en) * | 2019-03-11 | 2019-05-17 | 深圳市瑞升华科技股份有限公司 | Energy-saving sludge drying system and drying method for sludge |
| CN110701622A (en) * | 2019-08-02 | 2020-01-17 | 靖江市鑫盛环保科技有限责任公司 | Sludge drying and incinerating system and process flow thereof |
| CN110498588A (en) * | 2019-09-12 | 2019-11-26 | 北京誉铧生物科技有限公司 | A kind of continuous biomass anhydration system and drying process |
| CN111302597A (en) * | 2020-03-04 | 2020-06-19 | 昆明理工大学 | Municipal sludge drying device based on yellow phosphorus tail gas and use method |
| CN112028442A (en) * | 2020-07-16 | 2020-12-04 | 北京国电龙源环保工程有限公司 | Sludge drying system and drying method utilizing multi-section type heat energy in stepped mode |
| CN114646207A (en) * | 2022-03-21 | 2022-06-21 | 江苏国信协联能源有限公司 | Wet blue algae drying method |
| CN114646207B (en) * | 2022-03-21 | 2023-04-07 | 江苏国信协联能源有限公司 | Wet blue algae drying method |
| CN115057602A (en) * | 2022-06-09 | 2022-09-16 | 上海电气集团股份有限公司 | Drying device and drying system thereof |
| CN115057602B (en) * | 2022-06-09 | 2024-04-12 | 上海电气集团股份有限公司 | Desiccator and desiccation system thereof |
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