CN220802558U - Heat exchange system of sludge drying system and ceramsite cooling system - Google Patents
Heat exchange system of sludge drying system and ceramsite cooling system Download PDFInfo
- Publication number
- CN220802558U CN220802558U CN202322627047.8U CN202322627047U CN220802558U CN 220802558 U CN220802558 U CN 220802558U CN 202322627047 U CN202322627047 U CN 202322627047U CN 220802558 U CN220802558 U CN 220802558U
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- flue gas
- gas
- heat exchange
- sludge
- unit
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- 239000010802 sludge Substances 0.000 title claims abstract description 59
- 238000001035 drying Methods 0.000 title claims abstract description 37
- 238000001816 cooling Methods 0.000 title claims abstract description 36
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000003546 flue gas Substances 0.000 claims abstract description 81
- 239000002918 waste heat Substances 0.000 claims abstract description 44
- 239000007789 gas Substances 0.000 claims abstract description 42
- 239000000428 dust Substances 0.000 claims description 22
- 239000003507 refrigerant Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The utility model belongs to the technical field of heat exchange systems, and particularly discloses a heat exchange system of a sludge drying system and a ceramsite cooling system, which comprises a flue gas waste heat unit, a ceramsite cooling waste heat unit and a sludge drying unit, wherein heat exchange treatment is carried out between the flue gas waste heat unit and the sludge drying unit through a flue gas heat exchanger, the sludge in the sludge drying unit is dried by gas subjected to heat exchange through the flue gas heat exchanger, the gas subjected to drying of the sludge is dedusted through a first deduster and then enters a flue gas condenser, the gas coming out of the flue gas condenser and hot air of the ceramsite cooling waste heat unit are respectively entered into the waste heat exchanger for heat exchange, and the gas subjected to heat exchange heating is returned to the flue gas heat exchanger and exchanges heat with the flue gas waste heat unit. According to the technical scheme, the heat energy is recovered, hot air can be safely discharged after being cooled, and subsequent flue gas treatment is facilitated after the flue gas is cooled.
Description
Technical Field
The utility model belongs to the technical field of heat exchange systems, and particularly relates to a heat exchange system of a sludge drying system and a ceramsite cooling system.
Background
At present, domestic sludge treatment belongs to a high energy consumption type, and a lot of available heat energy can be generated in the treatment process, and if the heat energy cannot be recycled, the waste of energy can be caused.
The utility model discloses a high temperature flue gas recycle system (CN 216337222U) of high temperature rotary kiln among the prior art, including air-blower, sludge drying kiln, the masonry product steam curing room that sets gradually, can first guide the high temperature gas that calcine the haydite produced into the kiln body under the effect of air-blower, drive the kiln body rotatory through driving motor to realized the intensive mixing contact of high temperature gas and the internal high moisture mud of kiln or objects such as lees, with utilize the waste heat of high temperature gas to realize its stoving to high moisture waste. The high-temperature gas after utilization still has certain waste heat after being led out of the kiln body, so that the waste heat can be reduced and led into the masonry product steam curing chamber to be fully contacted with the masonry product in the masonry product steam curing chamber, and the masonry product steam curing is realized.
The technical scheme can directly utilize high-temperature gas generated by calcining the ceramsite to dry the sludge and steam and nourish the masonry product. In the production process of the ceramsite, the ceramsite is also required to be cooled, thousands of dry and clean gases with cubes exceeding 100 ℃ can be generated by waste heat of the ceramsite cooling, the environment can be influenced by direct discharge, and heat energy is also wasted. In the technical scheme, waste heat of ceramsite cooling is not recycled.
Disclosure of utility model
The utility model aims to provide a heat exchange system of a sludge drying system and a ceramsite cooling system, which is used for recycling hot air for cooling ceramsite and high-temperature flue gas in a rotary kiln to dry sludge so as to utilize most of waste heat in ceramsite production.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: the heat exchange system of the sludge drying system and the ceramsite cooling system comprises a flue gas waste heat unit, a ceramsite cooling waste heat unit and a sludge drying unit, wherein heat exchange treatment is carried out between the flue gas waste heat unit and the sludge drying unit through a flue gas heat exchanger, the sludge in the sludge drying unit is dried through gas subjected to heat exchange through the flue gas heat exchanger, the gas subjected to drying of the sludge enters a flue gas condenser after being dedusted through a first deduster, and the gas coming out of the flue gas condenser and hot air of the ceramsite cooling waste heat unit enter the waste heat exchanger respectively to carry out heat exchange, and the gas subjected to heat exchange and temperature rise returns to the flue gas heat exchanger to exchange heat with the flue gas waste heat unit.
Further, the flue gas waste heat unit comprises a second dust remover, the second dust remover removes dust to the flue gas, the high-temperature flue gas after dust removal is conveyed into the flue gas heat exchanger, and the flue gas after heat exchange is conveyed to the flue gas treatment system for treatment.
Further, a part of the gas obtained after the sludge is dried enters the first dust remover, and the other part of the gas and the gas subjected to heat exchange and temperature rise by the waste heat exchanger are returned to the flue gas heat exchanger.
Further, the other part of gas and the gas subjected to heat exchange and temperature rise by the waste heat exchanger are returned into the flue gas heat exchanger through the circulating fan.
Further, the liquid condensed by the flue gas condenser enters a condensate tank, the refrigerant in the flue gas condenser is cooled in a cooling tower, and the cooled refrigerant returns to the flue gas condenser through a circulating cooling pump.
Further, the gas discharged from the flue gas condenser is discharged through the condensing fan, one part of the gas enters the rotary kiln to cool the ceramsite, and the other part of the gas enters the waste heat exchanger to exchange heat.
Further, the sludge drying unit comprises a sludge conveying structure, a distributing machine, a dryer and a screw conveyor, wherein the sludge conveying structure conveys sludge into the distributing machine, the distributing machine is connected with a feed inlet of the dryer, the distributing machine conveys the sludge into the dryer, and the dried sludge is discharged from a discharge hole and conveyed into the rotary kiln through the screw conveyor to prepare ceramsites.
The beneficial effects of this technical scheme lie in: according to the technical scheme, the sludge is dried by recycling the hot air for cooling the ceramsite and the waste heat of the high-temperature flue gas in the ceramsite production process, so that the recovery of heat energy is realized, the hot air can be safely discharged after being cooled, and the subsequent flue gas treatment is also facilitated after the flue gas is cooled.
Drawings
FIG. 1 is a schematic diagram of a heat exchange system of a sludge drying system and a ceramsite cooling system of the present utility model.
Detailed Description
The following is a further detailed description of the embodiments:
Reference numerals in the drawings of the specification include: the device comprises a flue gas waste heat unit 1, a sludge drying unit 2, a ceramsite cooling waste heat unit 3, a second dust remover 4, a flue gas heat exchanger 5, a distributor 6, a dryer 7, a screw conveyor 8, a circulating fan 9, a first dust remover 10, a waste heat exchanger 11, a flue gas condenser 12, a condensing fan 13, a cooling tower 14, a circulating cooling pump 15, an expansion corrugated pipe 16, a temperature detector 17 and a pressure detector 18.
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
An example is substantially as shown in figure 1: the heat exchange system of the sludge drying system and the ceramsite cooling system comprises a flue gas waste heat unit 1, a ceramsite cooling waste heat unit 3 and a sludge drying unit 2, wherein the flue gas waste heat unit 1 comprises a second dust remover 4 (particularly a ceramic multi-tube dust remover), the second dust remover 4 removes dust from flue gas, high-temperature flue gas after dust removal is conveyed into a flue gas heat exchanger 5, and the flue gas after heat exchange is conveyed to a flue gas treatment system for treatment. The flue gas waste heat unit 1 and the sludge drying unit 2 are subjected to heat exchange treatment through the flue gas heat exchanger 5, and the gas subjected to heat exchange through the flue gas heat exchanger 5 dries the sludge in the sludge drying unit 2. Part of the gas after drying the sludge enters a first dust remover 10 (specifically a cloth bag dust remover) and then enters a flue gas condenser 12, and the other part of the gas and the gas subjected to heat exchange and temperature rise through a waste heat exchanger 11 are returned into the flue gas heat exchanger 5 through a circulating fan 9. The liquid condensed by the flue gas condenser 12 enters a condensate tank, the refrigerant in the flue gas condenser 12 is cooled in a cooling tower 14, and the cooled refrigerant returns to the flue gas condenser 12 through a circulating cooling pump 15. The gas (uncondensed gas) coming out of the flue gas condenser 12 is discharged through the condensing fan 13, one part of the gas enters the rotary kiln to cool the ceramsite, the other part of the gas enters the waste heat exchanger 11 to exchange heat with the hot air of the ceramsite cooling waste heat unit 3, and the gas heated through heat exchange returns to the flue gas heat exchanger 5 to exchange heat with the flue gas waste heat unit 1. The sludge drying unit 2 comprises a sludge conveying structure, a distributor 6 (comprising a swing distributor 6 and a slitting distributor 6 in detail), a dryer 7 (a composite belt dryer 7 in detail) and a screw conveyor 8, wherein the sludge conveying structure conveys sludge into the distributor 6, the distributor 6 is connected with a feed inlet of the dryer 7, the distributor 6 conveys the sludge into the dryer 7, and the dried sludge is discharged from a discharge hole and conveyed into a rotary kiln through the screw conveyor 8 to prepare ceramsite.
Temperature detectors 17 are arranged between the flue gas heat exchanger 5 and the flue gas treatment system, between the flue gas heat exchanger 5 and the dryer 7, on the dryer 7, between the first dust remover 10 and the flue gas condenser 12, and between the flue gas condenser 12 and the condensing fan 13, and a pressure detector 18 is also arranged on the dryer 7.
Expansion bellows 16 are arranged at the outlet and inlet of the circulating fan 9 and the condensing fan 13.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely an embodiment of the present utility model, and a specific structure and characteristics of common knowledge in the art, which are well known in the scheme, are not described herein, so that a person of ordinary skill in the art knows all the prior art in the application date or before the priority date, can know all the prior art in the field, and has the capability of applying the conventional experimental means before the date, and a person of ordinary skill in the art can complete and implement the present embodiment in combination with his own capability in the light of the present utility model, and some typical known structures or known methods should not be an obstacle for a person of ordinary skill in the art to implement the present utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (7)
1. The heat exchange system of sludge drying system and haydite cooling system, its characterized in that: including flue gas waste heat unit (1), haydite cooling waste heat unit (3) and sludge drying unit (2), carry out heat transfer between flue gas waste heat unit (1) and sludge drying unit (2) through flue gas heat exchanger (5), the gas after flue gas heat exchanger (5) heat transfer is dried the mud in sludge drying unit (2), enter into flue gas condenser (12) after drying the mud behind first dust remover (10) dust removal, the gas that comes out in flue gas condenser (12) and the hot-blast of haydite cooling waste heat unit (3) enter into waste heat exchanger (11) respectively and carry out the heat exchange, the gas that goes through the heat exchange intensification returns flue gas heat exchanger (5), carries out the heat transfer with flue gas waste heat unit (1).
2. The heat exchange system of a sludge drying system and a ceramsite cooling system according to claim 1, wherein: the flue gas waste heat unit (1) comprises a second dust remover (4), the second dust remover (4) removes dust to flue gas, high-temperature flue gas after dust removal is conveyed into the flue gas heat exchanger (5), and the flue gas after heat exchange is conveyed to the flue gas treatment system for treatment.
3. The heat exchange system of a sludge drying system and a ceramsite cooling system according to claim 1, wherein: part of the gas after drying the sludge enters the first dust remover (10), and the other part of the gas returns to the flue gas heat exchanger (5) together with the gas subjected to heat exchange and temperature rise by the waste heat exchanger (11).
4. A heat exchange system of a sludge drying system and a ceramsite cooling system according to claim 3, wherein: the other part of gas and the gas heated by heat exchange of the waste heat exchanger (11) are returned into the flue gas heat exchanger (5) through the circulating fan (9).
5. The heat exchange system of a sludge drying system and a ceramsite cooling system according to claim 1, wherein: the liquid condensed by the flue gas condenser (12) enters a condensate tank, the refrigerant in the flue gas condenser (12) is cooled in a cooling tower (14), and the cooled refrigerant returns to the flue gas condenser (12) through a circulating cooling pump (15).
6. The heat exchange system of a sludge drying system and a ceramsite cooling system according to claim 1, wherein: and the gas from the flue gas condenser (12) is discharged through a condensing fan (13), one part of the gas enters the rotary kiln to cool the ceramsite, and the other part of the gas enters the waste heat exchanger (11) to exchange heat.
7. The heat exchange system of a sludge drying system and a ceramsite cooling system according to claim 1, wherein: the sludge drying unit (2) comprises a sludge conveying structure, a distributing machine (6), a dryer (7) and a screw conveyor (8), wherein the sludge conveying structure conveys sludge into the distributing machine (6), the distributing machine (6) is connected with a feeding port of the dryer (7), the distributing machine (6) conveys sludge into the dryer (7), and the dried sludge is discharged from a discharge port and conveyed into a rotary kiln through the screw conveyor (8) to prepare ceramsite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322627047.8U CN220802558U (en) | 2023-09-27 | 2023-09-27 | Heat exchange system of sludge drying system and ceramsite cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322627047.8U CN220802558U (en) | 2023-09-27 | 2023-09-27 | Heat exchange system of sludge drying system and ceramsite cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220802558U true CN220802558U (en) | 2024-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322627047.8U Active CN220802558U (en) | 2023-09-27 | 2023-09-27 | Heat exchange system of sludge drying system and ceramsite cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220802558U (en) |
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2023
- 2023-09-27 CN CN202322627047.8U patent/CN220802558U/en active Active
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