CN204079746U - A kind of heat drying system - Google Patents
A kind of heat drying system Download PDFInfo
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- CN204079746U CN204079746U CN201420516154.1U CN201420516154U CN204079746U CN 204079746 U CN204079746 U CN 204079746U CN 201420516154 U CN201420516154 U CN 201420516154U CN 204079746 U CN204079746 U CN 204079746U
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- drying machine
- steam
- lock hopper
- mud
- superheated vapour
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Abstract
The utility model discloses a kind of heat drying system, described system comprises: device for transporting objects, and device for transporting objects is connected with sludge bin; First lock hopper, the first lock hopper is connected with described device for transporting objects; Drying machine, drying machine is connected with the first lock hopper; Steam unit, described steam unit is connected with described device for transporting objects, described first lock hopper and described drying machine respectively; Superheated vapour is transported in described device for transporting objects, described first lock hopper and described drying machine by described steam unit respectively, and the described superheated vapour preheating of described mud by carrying in described device for transporting objects, described mud is heated by the described superheated vapour carried in described first lock hopper, described mud is by carrying saturated steam to heat in described drying machine, and the moisture that mummification goes out is taken out of drying machine by described superheated vapour; The utility model overcomes traditional sludge anhydration system and adopts air to have the shortcoming of high energy consumption as taking humid gas, possesses the feature of energy-saving safe.
Description
Technical field
The utility model belongs to environmental technology field, particularly a kind of heat drying system.
Background technology
Along with China constantly develops in depth to waste water control assault of fortified positions, national urban wastewater treatment industry has presented and has continued healthy developing state.The construction energetically of urban wastewater treatment firm, will provide important support to improving Urban Water environmental quality.But pollutent does not but thoroughly process by urban wastewater treatment firm, create a large amount of active sludge, because mud is difficult to process, become the maximum hidden danger of manufacture " secondary pollution "; Mud is the concentrated thing of various pollutent in sewage, containing a large amount of virus, bacterium, heavy metal.Current China major part mud is not effectively addressed, and the random excretion of mud causes great environmental protection accident.
Moisture in mud is dried by adopting thermal source by sludge drying process, and after dehydration, dewatered sludge mixes burning as low grade coal and power plant soot, plays the effect of energy recovery, is the sludge treatment technique of a kind of innoxious, minimizing, resource utilization.But existing sludge drying system existing defects is as follows:
1, adopt power-plant flue gas as drying source, air consumption is large, and the tail gas that mummification produces is difficult to deodorizing, and then in drying process, produces " secondary pollution ", contaminate environment;
2, adopt air as taking humid gas, the tail gas that mummification produces is difficult to reclaim heat, and mummification energy consumption is high;
2, adopting air as taking humid gas, when the oxygen in air and dust are present in desiccation machine simultaneously, there is the risk of blasting, harm operating personnel safety.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of heat drying system, adopt saturated steam as thermal source dewatered sludge, adopt superheated vapour as taking humid gas simultaneously, and energy recovery is carried out to dried tail gas, solve sludge drying high cost and potential safety problem.
For solving the problems of the technologies described above, the utility model provides a kind of heat drying system, and this system is connected with sludge bin, and for carrying out mummification to water-containing sludge, its system comprises: device for transporting objects, and described device for transporting objects is connected with described sludge bin; First lock hopper, described first lock hopper is connected with described device for transporting objects; Drying machine, described drying machine is connected with described first lock hopper, adopts saturated steam as thermal source, indirectly drying mud; Superheated vapour device, described superheated vapour device is connected with described device for transporting objects, described first lock hopper and described drying machine respectively; Wherein, superheated vapour is transported in described device for transporting objects, described first lock hopper and described drying machine by described steam unit respectively, and the described superheated vapour preheating of described mud by carrying in described device for transporting objects, described mud is heated again by the described superheated vapour carried in described first lock hopper, described mud is in described drying machine, by described saturation steam mummification to final water ratio, described mud is taken out of described drying machine by described superheated vapour simultaneously.
Further, described superheated vapour device comprises: the first steam-pipe, described first steam-pipe is connected with described device for transporting objects, and superheated vapour is transported in described device for transporting objects by described first steam-pipe, and carries out preheating to described mud; Second steam-pipe, described second steam-pipe is connected with described first lock hopper, and superheated vapour is transported in described first lock hopper by described second steam-pipe, and heats described mud, gets rid of air in charging; 3rd steam-pipe, described 3rd steam-pipe is connected with described drying machine, and superheated vapour is transported in described drying machine by described 3rd steam-pipe, is taken away by the moisture evaporated as taking humid gas in mud.
Further, described system also comprises: cleaning apparatus, and described cleaning apparatus is connected with described drying machine, makes the humid gas of taking in described drying machine be transported in described cleaning apparatus by described drying machine and carry out dedusting; Interchanger, described interchanger is connected with described cleaning apparatus, makes the cleaning apparatus described in humid gas one route of taking after dedusting be transported in described interchanger and carry out heat recuperation.
Further, described system also comprises: the 4th steam-pipe, and described 4th steam-pipe is connected with described cleaning apparatus, described drying machine respectively, makes the cleaning apparatus described in another route of humid gas of taking after dedusting be transported in described drying machine the mummification that circulates.
Further, described system also comprises: the second lock hopper, and described second lock hopper is connected with described drying machine; Refrigerating unit, described refrigerating unit is connected with described second lock hopper; Wherein, described mud is by described drying machine successively through described second lock hopper, described refrigerating unit, and described mud is transported to extraneous Coal Transportation System after the cooling of described refrigerating unit.
Further, described system also comprises: rotary conveyor, and described rotary conveyor is connected with described refrigerating unit, makes to be transported to extraneous Coal Transportation System through the cooled mud of described refrigerating unit.
Further, described system also comprises: header tank, and described header tank is connected with described drying machine, collects the water of condensation that the saturation steam condensation in described drying machine produces.
Further, described device for transporting objects at least comprises: the first worm conveyor; With or, described refrigerating unit at least comprises: the second worm conveyor.
Further, described cleaning apparatus at least comprises: tornado dust collector.
A kind of heat drying system that the utility model provides, by arranging steam unit, superheated vapour is made to be transported to device for transporting objects respectively by superheated vapour device, in first lock hopper and drying machine, when superheated vapour is transported in device for transporting objects, described superheated vapour carries out thermal pretreatment to the water-containing sludge in device for transporting objects, when superheated vapour is transported in the first lock hopper, described superheated vapour heats the water-containing sludge in the first lock hopper, get rid of the air in charging simultaneously, in drying machine, by the indirect heating of saturated steam by sludge drying to final water ratio, the water vapour that mummification produces is taken away by described superheated vapour, in actual job process, as taking humid gas, dry transpiring moisture is taken away in drying machine, and reclaim heat by interchanger, solve sludge drying high cost and potential safety problem.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The heat drying system principle structured flowchart that Fig. 1 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of the utility model protection.
See Fig. 1, a kind of heat drying system that the utility model embodiment provides, this system is connected with sludge bin, and for carrying out mummification to water-containing sludge, wherein sludge bin is the reserving chamber that the water-containing sludge of mummification is treated in interim storage; This system comprises: device for transporting objects, and described device for transporting objects is connected with the discharge port of described sludge bin by its opening for feed; First lock hopper 1, described first lock hopper 1 is connected with described device for transporting objects; Drying machine 3, described drying machine 3 is connected with described first lock hopper 1; Steam unit, described steam unit is connected with described device for transporting objects, described first lock hopper 1 and described drying machine 3 respectively; Wherein, superheated vapour is transported in described device for transporting objects, described first lock hopper 1 and described drying machine 3 respectively by described steam unit, and the described superheated vapour preheating of described mud by carrying in described device for transporting objects.
Specifically, in a kind of heat drying system that the utility model embodiment provides, water-containing sludge is delivered to device for transporting objects from sludge bin, the water-containing sludge be transported in device for transporting objects slowly advances in this device for transporting objects, simultaneously, superheated vapour is transported in described device for transporting objects by described steam unit and carries out preliminary preheating to the water-containing sludge slowly advanced, after water-containing sludge carries out thermal pretreatment, now open the upper valve of the first lock hopper 1, close the lower valve of the first lock hopper 1, water-containing sludge after thermal pretreatment is transported in the first lock hopper 1, simultaneously, superheated vapour is transported in the first lock hopper 1 by described steam unit and heats water-containing sludge, get rid of the air in mud simultaneously, now close the upper valve of the first lock hopper 1, open the lower valve of the first lock hopper 1, mud after heat treated is transported in drying machine 3, simultaneously, superheated vapour is transported in drying machine 3 as taking humid gas by described steam unit, the saturated steam that pipeline 12 transports enters drying machine as thermal source, by the indirect heat exchange with water-containing sludge, moisture in water-containing sludge is evaporated and is pulled away with taking together with humid gas, along with mud slowly moves forward in drying machine 3, moisture wherein and then gradually tail off, and control mud residence time in moisture eliminator 3 by controlling rate of advance, when mud arrival drying machine 3 is exported, reach target water ratio, preferably, drying machine 3 is disc dryer, and in actual job process, this disc dryer is stable, power consumption is little, and is slowly rotated by disk in disc dryer, mud and disk friction power little, be directed to the feature that domestic mud sediment concentration amount is large, can steady in a long-termly run.
In the utility model embodiment, described superheated vapour device comprises: the first steam-pipe 8, and wherein, the first steam-pipe 8 is connected with described device for transporting objects, superheated vapour is transported in described device for transporting objects by described first steam-pipe 8, and carries out preheating to described mud; Second steam-pipe 9, wherein, described second steam-pipe 9 is connected with described first lock hopper 1, superheated vapour is transported in described first lock hopper 1 by described second steam-pipe 8, and heat emptying is added to described mud, 3rd steam-pipe 10, described 3rd steam-pipe 10 is connected with described drying machine, and the superheated vapour produced by extraneous steam generating device is transported in described drying machine by described 3rd steam-pipe 10.Preferably, described device for transporting objects at least comprises: the first worm conveyor 6; This first worm conveyor 6 can laterally be placed, and be convenient to water-containing sludge and slowly advance in the first worm conveyor 6, and then the superheated vapour realizing being carried by the first steam-pipe 8 is to the abundant preheating of described mud.
In the utility model embodiment, described system also comprises: cleaning apparatus, and wherein, described cleaning apparatus is connected with described drying machine 3, makes the humid gas of taking in described drying machine 3 be transported in described cleaning apparatus by described drying machine 3 and carry out dedusting; Interchanger 4, wherein, described interchanger 4 is connected with described cleaning apparatus, makes the cleaning apparatus described in humid gas one route of taking after dedusting be transported in described interchanger and carry out heat recuperation; Described heat drying system the utility model embodiment being provided eventually through described cleaning apparatus and described interchanger 4 can realize energy recovery recycling.Preferably, cleaning apparatus at least comprises: tornado dust collector 5.
In other words, humid gas of taking in the utility model embodiment after cleaning apparatus (tornado dust collector 5) dust removal process is divided into into two-way, one road cycling and reutilization, one tunnel is reclaimed after heat through interchanger 4 and is entered exhaust gas processing device, rear discharge up to standard, the utility model, by heat recuperation, reduces the energy expenditure of heat drying system, and the relatively conventional air of superheated vapour is as taking humid gas, superheated vapour heat exchange efficiency is high.
In the utility model embodiment, described system also comprises: steam-pipe 12, and described steam-pipe 12 is connected with described drying machine 3 respectively, as thermal source, by sludge drying to final water ratio.Simultaneously, the water of condensation that the utility model is produced by the saturation steam condensation of setting up in header tank real-time collecting drying machine 3, and due to anhydration system employing moisture eliminator 3 indirect heat exchange, superheated vapour is not polluted, the final water of condensation realizing cleaning can arrive boiler water reuse, has the effect of energy-conserving and environment-protective.
Meanwhile, in above-mentioned drying machine 3, be all filled with superheated vapour on the one hand, omnidistance also no oxygen in mummification operation process existed, avoids the danger of dust explosion, have the advantages that safety performance is high; Superheat steam temperature is high on the other hand, and heat transfer coefficient is large, and moisture evaporation is fast, makes drying machine 3 short for time of drying, and actual treatment amount increases.
It should be noted that, described system also comprises: the second lock hopper 2, and described second lock hopper 2 is connected with described drying machine 3; For carrying out the refrigerating unit of cooling process to the mud after drying and other treatment, described refrigerating unit is connected with described second lock hopper 2; Rotary conveyor 13, described rotary conveyor 13 is connected with described refrigerating unit, makes to be transported to extraneous Coal Transportation System through the cooled mud of described refrigerating unit; Header tank, described header tank is connected with described drying machine 3, collects the water of condensation that the saturation steam condensation in described drying machine 3 produces.
Specifically, mud after drying and other treatment to enter refrigerating unit through the second lock hopper 2 from drying machine 3 and cools, refrigerating unit, by arranging cooling water intake and cooling water outlet, makes water coolant enter refrigerating unit smoothly from water-in and cools mud; Preferably, refrigerating unit at least comprises: the second worm conveyor 7;
A kind of heat drying system that the utility model provides, by arranging steam unit, superheated vapour is made to be transported to device for transporting objects respectively by steam unit, in first lock hopper and drying machine, when superheated vapour is transported in device for transporting objects, described superheated vapour carries out thermal pretreatment to the water-containing sludge in device for transporting objects, , when superheated vapour is transported in the first lock hopper, described superheated vapour carries out heating excluding air simultaneously to the water-containing sludge in the first lock hopper, , time in drying machine, saturated steam by indirect heating by sludge drying to final water ratio, superheated vapour takes the moisture evaporated out of drying machine as taking humid gas simultaneously, , in actual job process, in drying machine, adopt superheated vapour to be taken away by dry transpiring moisture as taking humid gas, and reclaim heat by interchanger, solve sludge drying high cost and potential safety problem.
It should be noted last that, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to example, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (9)
1. a heat drying system, is connected with sludge bin, for carrying out mummification to water-containing sludge, it is characterized in that, described system comprises:
Device for transporting objects, described device for transporting objects is connected with described sludge bin;
First lock hopper, described first lock hopper is connected with described device for transporting objects;
Drying machine, described drying machine is connected with described first lock hopper, and drying machine adopts saturated steam indirect heating dewatered sludge;
Superheated vapour device, described superheated vapour device is connected with described device for transporting objects, described first lock hopper and described drying machine respectively;
Wherein, superheated vapour is transported in described device for transporting objects, described first lock hopper and described drying machine respectively by described steam unit, and saturation steam is transported in described drying machine by described steam unit; And the described superheated vapour preheating of described mud by carrying in described device for transporting objects, described mud is heated again by the described superheated vapour carried in described first lock hopper, described mud is in described drying machine, by described saturation steam mummification to final water ratio, described mud is taken out of described drying machine by described superheated vapour simultaneously.
2. according to system according to claim 1, it is characterized in that, described superheated vapour device comprises:
First steam-pipe, described first steam-pipe is connected with described device for transporting objects, and superheated vapour is transported in described device for transporting objects by described first steam-pipe, and carries out preheating to described mud;
Second steam-pipe, described second steam-pipe is connected with described first lock hopper, and superheated vapour is transported in described first lock hopper by described second steam-pipe, and again heats described mud, discharges the air in material;
3rd steam-pipe, described 3rd steam-pipe is connected with described drying machine, and superheated vapour is transported in described drying machine by described 3rd steam-pipe, and takes the moisture evaporated in described mud out of described drying machine.
3. according to system according to claim 2, it is characterized in that, described system also comprises:
Cleaning apparatus, described cleaning apparatus is connected with described drying machine, makes the humid gas of taking in described drying machine be transported in described cleaning apparatus by described drying machine and carry out dedusting;
Interchanger, described interchanger is connected with described cleaning apparatus, makes the cleaning apparatus described in humid gas one route of taking after dedusting be transported in described interchanger and carry out heat recuperation.
4. according to system according to claim 3, it is characterized in that, described system also comprises:
4th steam-pipe, described 4th steam-pipe is connected with described cleaning apparatus, described drying machine respectively, makes the cleaning apparatus described in another route of humid gas of taking after dedusting be transported in described drying machine the mummification that circulates.
5., according to the system described in claim 3 or 4, it is characterized in that, described system also comprises:
Second lock hopper, described second lock hopper is connected with described drying machine;
Refrigerating unit, described refrigerating unit is connected with described second lock hopper;
Wherein, described mud is by described drying machine successively through described second lock hopper, described refrigerating unit, and described mud is transported to extraneous Coal Transportation System after the cooling of described refrigerating unit.
6. according to system according to claim 5, it is characterized in that, described system also comprises:
Rotary conveyor, described rotary conveyor is connected with described refrigerating unit, makes to be transported to extraneous Coal Transportation System through the cooled mud of described refrigerating unit.
7. according to system according to claim 1, it is characterized in that, described system also comprises:
Header tank, described header tank is connected with described drying machine, collects the water of condensation that the saturation steam condensation in described drying machine produces.
8., according to system according to claim 5, it is characterized in that,
Described device for transporting objects at least comprises: the first worm conveyor;
With or,
Described refrigerating unit at least comprises: the second worm conveyor.
9., according to system according to claim 3, it is characterized in that:
Described cleaning apparatus at least comprises: tornado dust collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420516154.1U CN204079746U (en) | 2014-09-09 | 2014-09-09 | A kind of heat drying system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420516154.1U CN204079746U (en) | 2014-09-09 | 2014-09-09 | A kind of heat drying system |
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| CN204079746U true CN204079746U (en) | 2015-01-07 |
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| CN201420516154.1U Active CN204079746U (en) | 2014-09-09 | 2014-09-09 | A kind of heat drying system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109574453A (en) * | 2018-12-28 | 2019-04-05 | 联合瑞升（北京）科技有限公司 | A kind of evaporation energy-saving system of sludge heat drying |
| CN109928444A (en) * | 2019-04-23 | 2019-06-25 | 中山市共创机械设备有限公司 | Energy-saving drying device and process for landfill leachate |
| CN110963668A (en) * | 2019-12-27 | 2020-04-07 | 江苏唐电电力工程设计有限公司 | Superheated steam drying sludge incineration device with preheating function |
-
2014
- 2014-09-09 CN CN201420516154.1U patent/CN204079746U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109574453A (en) * | 2018-12-28 | 2019-04-05 | 联合瑞升（北京）科技有限公司 | A kind of evaporation energy-saving system of sludge heat drying |
| CN109928444A (en) * | 2019-04-23 | 2019-06-25 | 中山市共创机械设备有限公司 | Energy-saving drying device and process for landfill leachate |
| CN110963668A (en) * | 2019-12-27 | 2020-04-07 | 江苏唐电电力工程设计有限公司 | Superheated steam drying sludge incineration device with preheating function |
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