CN111397351A - Device for drying sludge by using waste heat of tail gas - Google Patents
Device for drying sludge by using waste heat of tail gas Download PDFInfo
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- CN111397351A CN111397351A CN202010265317.3A CN202010265317A CN111397351A CN 111397351 A CN111397351 A CN 111397351A CN 202010265317 A CN202010265317 A CN 202010265317A CN 111397351 A CN111397351 A CN 111397351A
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- main body
- tail gas
- heat exchanger
- top cover
- side wall
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- 239000010802 sludge Substances 0.000 title claims abstract description 64
- 238000001035 drying Methods 0.000 title claims abstract description 39
- 239000002918 waste heat Substances 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 36
- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000007790 scraping Methods 0.000 claims description 18
- 239000011449 brick Substances 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 230000002209 hydrophobic effect Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 4
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- 238000004321 preservation Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 244000052769 pathogen Species 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 244000000010 microbial pathogen Species 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
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- 230000009467 reduction Effects 0.000 description 2
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- 239000002028 Biomass Substances 0.000 description 1
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
- F26B17/04—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces the belts being all horizontal or slightly inclined
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/18—Sludges, e.g. sewage, waste, industrial processes, cooling towers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a device for drying sludge by utilizing waste heat of tail gas, which comprises a device main body, a device top cover arranged at the upper end of the device main body, a feed inlet arranged on the device top cover, an air inlet penetrating through the top cover or the left side wall of the device main body, an air outlet penetrating through the top cover or the right side wall of the device main body, a material conveying structure arranged in the device main body and a heat exchange structure arranged in the device main body. The device for drying sludge by using the waste heat of the tail gas reasonably utilizes the heat of the tail gas in industrial production, improves the utilization rate of energy, can effectively finish drying the sludge, improves the efficiency of drying the sludge, and further reduces the cost of drying the sludge.
Description
Technical Field
The invention belongs to the field of environmental protection, and particularly relates to a device for drying sludge by using waste heat of tail gas.
Background
With the enhancement of economic development and environmental awareness, the town sewage treatment industry is continuously developed, the total treatment water quantity and the treatment degree of a sewage plant are continuously enlarged and improved, and the sludge quantity is further increased day by day. The investment and operation cost of sludge treatment and disposal are high, if the sludge treatment and disposal is not proper, secondary pollution is caused, which becomes a difficult problem in the field of environmental protection and is concerned.
The municipal sludge mainly comprises silt, clay and other hard impurities which are insoluble in water and aerobic microorganisms, the water content of the sludge can reach 98 percent, and the sludge is difficult to dehydrate. The main hazards and pollution generated by the method are as follows:
(1) organic matter pollution: the organic pollutants in the sludge mainly comprise benzene, chlorophenol, polychlorinated biphenyl (PCBs), polychlorinated dibenzofuran (PCDFs) and the like. Organic pollutants contained in the sludge are not easy to degrade, the toxic residual time is long, and the toxic and harmful substances enter water and soil to cause environmental pollution.
(2) Contamination by pathogenic microorganisms: pathogenic microorganisms and parasitic ova in the sewage can enter the sludge after treatment, and the pollution ways of pathogens in the sludge to human or animals comprise direct contact with the sludge, indirect contact with the sludge through a food chain, water source pollution by the pathogens, water body pollution after soil pollution by the pathogens, and the like.
(3) Heavy metal pollution: in the sewage treatment process, 70-90% of heavy metal elements can be transferred into the sludge through adsorption or precipitation. Some heavy metal elements are mainly derived from industrial discharged wastewater such as cadmium, chromium and the like. In addition, heavy metals are derived from household plumbing systems such as copper, zinc, and the like.
The sludge treatment is realized by the processing processes of concentration, regulation, dehydration, stabilization, drying or incineration and the like of the sludge, and finally the purposes of reduction, stabilization and harmless treatment of the sludge are achieved. In order to reduce the sludge, the sludge needs to be dried, and the water content of the sludge is controlled to be below 30% after treatment, so that the subsequent treatment and the comprehensive utilization are facilitated.
The current general flow of sludge drying is as follows: mechanical dewatering (reducing water content) → sludge drying (special equipment). However, the existing sludge drying equipment and the existing sludge drying process have the following problems: 1. the conventional drying equipment adopts the modes of electric heating, natural gas heating or biomass combustion heating and the like for drying, and the energy consumption is higher in the running process of the equipment, so that the drying cost is overhigh; 2. the sludge drying needs three processes of pretreatment, heating drying and tail gas treatment, so that the occupied area is large, the investment is high, the treatment period is long, and the occupied area of equipment is large; 3. in many factories with high-temperature equipment operating for a long time, such as ceramsite production, tile production, cement production and the like, tail gas of the factories must be subjected to temperature reduction treatment firstly, then enters a tail gas treatment system for treatment and then is discharged after reaching the standard, and steam or hot water is not required in the temperature reduction process or is heated in the steam or the hot water, so that a large amount of heat is directly discharged without being effectively utilized.
In summary, a drying device with high efficiency, direct performance, low investment and low operation cost is needed, the waste heat of the tail gas of an industrial process can be directly utilized to dry the sludge, the heat energy utilization rate of the waste heat of the industrial tail gas is improved, the safety of the whole production process is ensured, the cost of the sludge treatment process is reduced, and energy is saved.
Disclosure of Invention
The invention aims to overcome the problems and provide a device for drying sludge by using waste heat of tail gas, which reasonably utilizes the heat of the tail gas in industrial production, improves the utilization rate of energy, can effectively finish drying the sludge, improves the efficiency of drying the sludge and further reduces the cost of drying the sludge.
The purpose of the invention is realized by the following technical scheme:
the utility model provides an utilize device of tail gas waste heat drying sludge, includes the device main part, sets up the device top cap in device main part upper end, sets up the feed inlet on the device top cap, runs through the air inlet that sets up at top cap or device main part left side wall, runs through the gas outlet that sets up at top cap or device main part right side wall, sets up the material transmission structure in the inside of device main part to and set up the heat transfer structure in the inside of device main part.
Preferably, the device main body is in a hollow cuboid shape, the top of the device main body is not capped, the device top cover is in a roof shape, the front and the rear of the device top cover are a front slope surface and a rear slope surface which are slope surfaces and are obliquely arranged from a central line to the front and the rear sides, the bottom ends of the front slope surface and the rear slope surface are respectively connected with the top end of the front wall and the top end of the rear wall of the device main body, the left side wall and the right side wall of the device top cover are respectively triangular side walls which are vertically arranged, and the top end of the left side wall and the top end of the right side wall of the device main body are respectively connected with the left; the device main body and the device top cover are fixed into a whole.
Preferably, the upper side of the bottom surface of the device main body is inclined downwards from left to right, the inclination angle is 2-8 degrees, a water collecting tank is further arranged at the rightmost end of the upper side of the bottom surface of the device main body, the water collecting tank is inclined downwards from front to back to the center, and a liquid discharge port which penetrates through the device main body and communicates the water collecting tank with the outside is further arranged on the right side wall of the device main body.
Preferably, the top cover of the device is also provided with an air equalizing plate, the top end of the air equalizing plate is connected with the top of the top cover of the device, and the air equalizing plate is vertical to the air inlet; the distance between the air equalizing plate and the air inlet is 10-50 CM.
Furthermore, the material conveying structure consists of an upper-layer conveying device and a lower-layer conveying device, the right end of the upper-layer conveying device is connected with the right end of the lower-layer conveying device through a blanking channel, and the left end of the lower-layer conveying device is arranged outside the device main body; the upper layer transmission device consists of two rollers which are oppositely arranged, a transmission belt which is sleeved between the two rollers and a motor which is connected with any one roller and is used for driving the roller; the lower layer conveying device consists of two rollers which are oppositely arranged, a conveying belt which is sleeved between the two rollers, and a motor which is connected with any one roller and is used for driving the roller.
Preferably, the left end of a conveying belt of the upper-layer conveying device is positioned below the feeding hole, the front side and the rear side of the conveying belt are respectively provided with a side baffle, the side baffles are not in contact with the inner side wall of the device main body or the device top cover, and a scraping plate is further arranged between the two side baffles; the scraping plate is obliquely arranged downwards rightwards, the distance between the bottom end of the scraping plate and the conveying belt is 2-20CM, the position of the top end of the scraping plate is higher than the lowest end of the feeding hole, and the inclination angle of the scraping plate is 25-75 degrees; and the front side and the rear side of a transmission belt of the lower-layer transmission device are respectively provided with a side baffle.
Furthermore, the heat exchange structure consists of a tail gas inlet pipe penetrating through the left side wall of the device main body, a tail gas outlet pipe penetrating through the right side wall of the device main body, and an upper heat exchanger main body and a lower heat exchanger main body which are arranged between the tail gas inlet pipe and the tail gas outlet pipe; the upper heat exchanger main body is provided with at least one tail gas distributing pipe used for being connected with the tail gas inlet pipe and at least one tail gas distributing pipe used for being connected with the tail gas outlet pipe; the lower heat exchanger main body is provided with at least one tail gas distributing pipe used for being connected with the tail gas inlet pipe and at least one tail gas distributing pipe used for being connected with the tail gas outlet pipe.
Preferably, the upper heat exchanger main body and the lower heat exchanger main body are both of hollow upper arc closed box body structures, and a plurality of heat exchange fins which are arranged in an array manner are arranged on the upper side surface and the lower side surface of the upper heat exchanger main body and the lower heat exchanger main body; and a channel groove which vertically penetrates through the upper heat exchanger body is also arranged at the position, matched with the blanking channel, of the upper heat exchanger body.
Preferably, the upper heat exchanger body is arranged between the upper-layer conveying device and the lower-layer conveying device, and the lower heat exchanger body is arranged below the lower-layer conveying device.
In addition, the side walls of the device main body and the device top cover sequentially consist of an outer heat-insulating layer, a structure heat-insulating layer and a heat-insulating brick layer from outside to inside; the inner side of the insulating brick layer is also coated with a hydrophobic material coating.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the invention effectively utilizes various high-temperature tail gases generated in industrial production by arranging the heat exchange structure, provides a suitable environment for cooling the high-temperature tail gases and reasonably utilizing heat energy, achieves the drying effect of sludge and the cooling effect of the tail gases, well reduces the treatment cost of enterprises on solid waste and gas waste, and improves the production benefit of the enterprises.
(2) The device main body and the device top cover are both of a multilayer heat insulation structure, so that internal temperature leakage can be effectively avoided, the loss of heat energy is reduced, the utilization effect of the heat energy is improved, and the use cost of a product is further reduced; in addition, the hydrophobic material coating is arranged on the inner walls of the device main body and the device top cover, so that the flow efficiency of condensed water on the inner walls can be effectively improved, the probability that the condensed water is gasified again is better reduced, and the drainage effect of the product is effectively improved.
(3) The bottom of the device main body is obliquely arranged, so that the drainage effect in the product is further improved, and the condition of water accumulation in the product is well avoided.
(4) The upper heat exchanger body and the lower heat exchanger body are both arc-shaped, condensed water attached to the upper heat exchanger body and the lower heat exchanger body can be rapidly discharged to two sides, waste heat loss caused by re-gasification of the condensed water is reduced, and therefore the heat exchange effect of the heat exchange structure is improved.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a right side view of the upper and lower heat exchangers of the present invention.
Fig. 4 is a top view of the upper heat exchanger of the present invention.
Description of reference numerals: 1. a device main body; 2. a device top cover; 3. a feed inlet; 4. an air inlet; 5. a tail gas inlet pipe; 6. a lower layer transmission device; 7. an air outlet; 8. a tail gas outlet pipe; 9. a liquid discharge port; 10. an upper layer transfer device; 11. a side dam; 12. a scraping plate; 13. an upper heat exchanger body; 14. a lower heat exchanger body; 15. a blanking channel; 16. a tail gas distributing pipe; 17. a heat exchanger fin; 18. a channel groove; 19. a water collection tank.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Examples
As shown in fig. 1-4, a device for drying sludge by using waste heat of tail gas comprises a device body 1, a device top cover 2 arranged at the upper end of the device body 1, a feed inlet 3 arranged on the device top cover 2, an air inlet 4 arranged on the left side wall of the device body 1 or the top cover 2, an air outlet 7 arranged on the right side wall of the device body 1 or the top cover 2, a material transmission structure arranged inside the device body 1, and a heat exchange structure arranged inside the device body 1.
The device main body 1 is in a hollow cuboid shape, the top of the device main body 1 is not capped, the device top cover 2 is in a roof shape, the front and the back of the device top cover 2 are front slope surfaces and back slope surfaces which are slope surfaces and are obliquely arranged from a central line to the front and the back sides, the bottom ends of the front slope surfaces and the back slope surfaces are respectively connected with the top end of the front wall and the top end of the back wall of the device main body 1, the left side wall and the right side wall of the device top cover 2 are respectively triangular side walls which are vertically arranged, and the top end of the left side wall and the top end of the right side wall of the device main body 1 are respectively connected with the left; the device main body 1 and the device top cover 2 are fixed into a whole.
The device top cover is provided with the front slope surface and the rear slope surface, condensed water condensed on the device top cover can be effectively guided and drained to the front side and the rear side, and therefore the probability that the condensed water drops back into sludge on the device top cover is reduced, and the drying effect of the sludge is improved.
The upper side of the bottom surface of the device main body 1 is downwards inclined from left to right, the inclination angle is 2-8 degrees, a water collecting tank 19 is further arranged at the rightmost end of the upper side of the bottom surface of the device main body 1, the water collecting tank 19 is downwards inclined from front to back to the center, and a liquid discharge port 9 which penetrates through the device main body 1 and communicates the water collecting tank 19 with the outside is further arranged on the right side wall of the device main body 1.
The bottom surface of the device main body is obliquely arranged, so that the accidental collection of the condensed water can be effectively controlled, and the condensed water is prevented from being collected on the bottom surface of the device main body. And set up the water catch bowl and can provide an effectual container of keeping in to the comdenstion water when the comdenstion water is more, further improve drainage efficiency.
The side walls of the device main body 1 and the device top cover 2 sequentially consist of an outer heat-insulating layer, a structure heat-insulating layer and a heat-insulating brick layer from outside to inside; the inner side of the insulating brick layer is also coated with a hydrophobic material coating.
The insulating brick layer is laid for the insulating brick of commonly used and forms, and in the front slope face of device top cap and back slope face department, in order to improve the steadiness, can place the insulating brick with foam brick or cystosepiment and lay. The structure heat-insulating layer is paved on the outer side of the heat-insulating brick layer by adopting a ceramsite light partition plate so as to further improve the heat-insulating effect of the device main body and the device top cover. The outer heat preservation layer is then selected for use cotton insulation material of glass, rock wool heat preservation felt, rubber and plastic insulation material to lay, and outer heat preservation layer carries out further cooperation with insulating brick layer and structure heat preservation to guaranteed basically that the inside temperature of device main part and device top cap does not leak, improved the heat preservation effect of equipment, reduced the heat loss that the heat exchange leads to. The material laying method is the prior art in the field, and a person skilled in the art can complete the arrangement of the outer insulating layer, the structure insulating layer and the insulating brick layer without creative labor according to the description, which is not described herein again.
The hydrophobic material coating is obtained by coating hydrophobic paint on the inner wall of the insulating brick layer, and during setting, a high-temperature-resistant hydrophobic material should be preferably selected to prolong the service life of the hydrophobic material coating.
The top cover 2 of the device is also provided with an air equalizing plate, the top end of the air equalizing plate is connected with the top of the top cover 2 of the device, and the air equalizing plate is vertical to the air inlet 4; the distance between the air equalizing plate and the air inlet 4 is 10-50 CM.
The air equalizing plate is arranged for preventing air entering from the air inlet from directly blowing on the surface of sludge, so that the generation probability of dust in the equipment is reduced; secondly, the newly entered air is uniformly distributed in the equipment.
The gas entering the gas inlet can be outside air or hot gas generated in other industrial production processes, the actual gas selection needs to be determined according to the heating requirement, and the gas entering the gas inlet can also be changed through a valve; for example, the temperature of the equipment is rapidly increased by controlling the hot gas to enter at the initial stage, and the temperature of the equipment is stabilized by switching the entering gas to the air at the normal temperature through the valve, so as to achieve the purpose of controlling the internal temperature of the equipment. To ensure that air does not leak out of the air inlet, a fan or pump is provided at the air inlet to push air into the device.
The material conveying structure consists of an upper-layer conveying device 10 and a lower-layer conveying device 6, the right end of the upper-layer conveying device 10 is connected with the right end of the lower-layer conveying device 6 through a blanking channel 15, and the left end of the lower-layer conveying device 6 is arranged outside the device main body 1; the upper layer conveying device 10 consists of two oppositely arranged rollers, a conveying belt sleeved between the two rollers and a motor connected with any one of the rollers and used for driving the roller; the lower layer conveying device 6 consists of two oppositely arranged rollers, a conveying belt sleeved between the two rollers and a motor connected with any one roller and used for driving the roller.
Divide into upper transmission device and lower floor's transmission device's purpose with material transmission structure is the vertical space of effectual utilization, reduces the area of product to the production land used of more reasonable utilization enterprise. It is also obvious to those skilled in the art that three or even more than three layers of transmission devices may be provided according to the requirements, and should fall within the scope of the present application.
When the roller fixing device is arranged, the roller can be fixed by arranging a support on the device main body or the device top cover, and a motor for driving the roller can be arranged inside a product or outside the product and is connected with the roller through a rotating shaft penetrating through the device main body or the device top cover. The setting mode of the bracket and the motor is a conventional setting mode in the field, and a person skilled in the art can adjust a specific fixing mode according to actual requirements, which is not described herein again.
The blanking channel should be set up perpendicularly when setting up, and the angular deviation when setting up should be less than plus or minus 5, so just can ensure passing through that mud can be rapid to avoid the blanking channel to be blockked up by mud. When the device is arranged, the distance between the top end of the inner wall on the left side of the blanking channel and the transmission belt is 0.5-2CM, and the distance can be adjusted according to actual needs, so that scraping and coating can be performed on sludge attached to the transmission belt, and then residue of the sludge on the transmission belt is better reduced.
The left end of a conveying belt of the upper-layer conveying device 10 is positioned below the feeding hole 3, the front side and the rear side of the conveying belt are respectively provided with a side baffle 11, the side baffles 11 are not in contact with the inner side wall of the device main body 1 or the device top cover 2, and a scraping plate 12 is further arranged between the two side baffles 11; the scraping plate 12 is obliquely arranged downwards rightwards, the distance between the bottom end of the scraping plate 12 and the conveying belt is 2-20CM, the position of the top end of the scraping plate 12 is higher than the lowest end of the feed port 3, and the inclination angle of the scraping plate 12 is 25-75 degrees; and side baffles 11 are respectively arranged at the front side and the rear side of the transmission belt of the lower-layer transmission device 6.
The sludge entering from the feeding hole is accumulated on the conveying belt, and when the conveying belt moves rightwards, the sludge is extruded and hung on the conveying belt evenly under the action of the scraping plate, so that the surface area of the sludge contacting with the outside is increased, the difficulty of sludge drying is reduced, and the efficiency of sludge drying is increased. The side baffles are arranged to limit the flow of the sludge and prevent the sludge from sliding downwards from the front side and the rear side due to the self-fluidity of the sludge.
The conveyor belt may be replaced with a chain plate conveyor to increase the range of temperatures at which the device can be used.
The heat exchange structure consists of a tail gas inlet pipe 5 penetrating through the left side wall of the device main body 1, a tail gas outlet pipe 8 penetrating through the right side wall of the device main body 1, and an upper heat exchanger main body 13 and a lower heat exchanger main body 14 which are arranged between the tail gas inlet pipe 5 and the tail gas outlet pipe 8; the upper heat exchanger main body 13 is provided with at least one tail gas distributing pipe 16 connected with the tail gas inlet pipe 5 and at least one tail gas distributing pipe 16 connected with the tail gas outlet pipe 8; the lower heat exchanger body 14 is provided with at least one exhaust gas branch pipe 16 for connecting with the exhaust gas inlet pipe 5 and at least one exhaust gas branch pipe 16 for connecting with the exhaust gas outlet pipe 8.
Can set up barometer and valve on tail gas import pipe to make operating personnel can monitor the inside atmospheric pressure of heat transfer structure, and can reach the purpose of adjustment gas flow rate through controlling the inside concrete atmospheric pressure of heat transfer structure through the valve, and then improved the inside control flexibility of product.
The upper heat exchanger main body 13 and the lower heat exchanger main body 14 are both of hollow upper arc closed box body structures, and a plurality of heat exchange fins 17 which are arranged in an array manner are arranged on the upper side surface and the lower side surface of the upper heat exchanger main body 13 and the lower heat exchanger main body 14; the upper heat exchanger main body 13 is also provided with a channel groove 18 which vertically penetrates through the upper heat exchanger main body 13 at a position matched with the blanking channel 15.
The upper heat exchanger body and the lower heat exchanger body are hollow closed boxes, a channel can be effectively provided for tail gas to pass through, when the upper heat exchanger body and the lower heat exchanger body are arranged, the height of a cavity in the box body is controlled within the range of 10-80CM, so that the contact and heat exchange effect of the tail gas and the inner wall of the box body are improved, and the upper arc structure is arranged, so that condensate water attached to the outer walls of the upper heat exchanger body and the lower heat exchanger body can rapidly slide down.
When the device is arranged, the front end and the rear end of the upper heat exchanger main body and the rear end of the lower heat exchanger main body are not in contact with the device main body or the device top cover, so that the device main body and the device top cover are prevented from being hindered from sliding off condensed water; the front side and the rear side of the upper heat exchanger main body should extend out of the lower-layer conveying device, so that the phenomenon that the condensed water sliding on the upper heat exchanger main body is dripped into the dried sludge again is avoided.
Go up heat exchanger main part and heat exchanger main part down can be through reinforcing bar snap-on in device main part or device top cap, also can fix through the support, specific fixed mode is the prior art in this field, and the installation and the fixing of this last heat exchanger main part and heat exchanger main part down need not through creative work alright in the field, and what this application protected is the position that sets up of heat exchanger main part and heat exchanger main part down, and rather than its fixed mode, and the repeated description is not given here to the convenience.
The upper heat exchanger body 13 is arranged between the upper layer conveying device 10 and the lower layer conveying device 6, and the lower heat exchanger body 13 is arranged below the lower layer conveying device 6.
Divide into heat exchange structure into heat exchanger main part and the purpose of heat exchanger main part down and be the vertical space of effectual utilization, reduce the area of product to the production land of more reasonable utilization enterprise. The provision of three or even more layers and a heat exchanger body, as required, will be readily apparent to those skilled in the art and is intended to be within the scope of the present application.
In the production process, set up a condensing equipment for condensing gas respectively in gas outlet and tail gas outlet pipe rear end to collect the condensate that obtains after will condensing and the comdenstion water of leakage fluid dram discharge and carry out sewage treatment in unison, and discharge in unison after sewage is up to standard, thereby the production environment of protection enterprise that can be better and the peripheral ecological environment of enterprise, the environmental protection requirement of society now of more laminating.
In addition, the gas of gas outlet and tail gas export still need to be handled respectively behind gas outlet and the connected condensing equipment behind the tail gas outlet pipe and just can discharge it. The gas that gas outlet combustion gas goes out can carry a certain amount of raise dust because of it, so need handle its inside raise dust, for example carry out the collection of raise dust through the sack cleaner. And the gas discharged from the tail gas outlet pipe carries a certain amount of toxic and harmful substances in the gas, so that the gas needs to be subjected to harmless treatment. The dust emission treatment and the harmless treatment are the prior art in the field, and the dust emission treatment and the harmless treatment can be completed by a person skilled in the art without creative labor, which is not described herein again.
As described above, the present invention can be preferably realized.
Claims (10)
1. The utility model provides an utilize device of tail gas waste heat drying mud which characterized in that: the device comprises a device body (1), a device top cover (2) arranged at the upper end of the device body (1), a feed inlet (3) arranged on the device top cover (2), an air inlet (4) penetrating through the top cover (2) or the left side wall of the device body (1), an air outlet (7) penetrating through the top cover (2) or the right side wall of the device body (1), a material conveying structure arranged inside the device body (1), and a heat exchange structure arranged inside the device body (1).
2. The device for drying sludge by using waste heat of tail gas as claimed in claim 1, wherein: the device comprises a device body (1), a top cover (2), a front slope surface and a rear slope surface, wherein the top of the device body (1) is not covered, the front and rear parts of the device top cover (2) are slope surfaces and are downwards inclined from a central line to the front and rear sides, the bottom ends of the front slope surface and the rear slope surface are respectively connected with the top end of the front wall and the top end of the rear wall of the device body (1), the left side wall and the right side wall of the device top cover (2) are respectively vertically arranged triangular side walls, and the left side wall and the right side wall are respectively connected with the top end of the left side wall and the top end of the right side wall of the device body (1); the device main body (1) and the device top cover (2) are fixed into a whole.
3. The device for drying sludge by using waste heat of tail gas as claimed in claim 2, wherein: the device is characterized in that the upper side of the bottom surface of the device main body (1) is downwards inclined from left to right, the inclination angle is 2-8 degrees, a water collecting tank (19) is further arranged at the rightmost end of the upper side of the bottom surface of the device main body (1), the water collecting tank (19) is downwards inclined from front to back to the center, and a liquid discharge port (9) which penetrates through the device main body (1) and communicates the water collecting tank (19) with the outside is further arranged on the right side wall of the device main body (1).
4. The device for drying sludge by using waste heat of tail gas as claimed in claim 3, wherein: the top cover (2) of the device is also provided with an air equalizing plate, the top end of the air equalizing plate is connected with the top of the top cover (2) of the device, and the air equalizing plate is vertical to the air inlet (4); the distance between the air equalizing plate and the air inlet (4) is 10-50 CM.
5. The device for drying sludge by using waste heat of tail gas as claimed in claim 4, wherein: the material conveying structure consists of an upper-layer conveying device (10) and a lower-layer conveying device (6), the right end of the upper-layer conveying device (10) is connected with the right end of the lower-layer conveying device (6) through a blanking channel (15), and the left end of the lower-layer conveying device (6) is arranged outside the device main body (1); the upper layer conveying device (10) consists of two oppositely arranged rollers, a conveying belt sleeved between the two rollers and a motor connected with any one roller and used for driving the roller; the lower layer conveying device (6) consists of two oppositely arranged rollers, a conveying belt sleeved between the two rollers and a motor connected with any one roller and used for driving the roller.
6. The device for drying sludge by using waste heat of tail gas as claimed in claim 5, wherein: the left end of a conveying belt of the upper-layer conveying device (10) is positioned below the feeding hole (3), the front side and the rear side of the conveying belt are respectively provided with a side baffle (11), the side baffles (11) are not in contact with the inner side wall of the device main body (1) or the device top cover (2), and a scraping plate (12) is arranged between the two side baffles (11); the scraping plate (12) is obliquely arranged downwards rightwards, the distance between the bottom end of the scraping plate (12) and the conveying belt is 2-20CM, the position of the top end of the scraping plate (12) is higher than the lowest end of the feeding hole (3), and the inclination angle of the scraping plate (12) is 25-75 degrees; and side baffles (11) are respectively arranged on the front side and the rear side of the transmission belt of the lower-layer transmission device (6).
7. The device for drying sludge by using waste heat of tail gas as claimed in claim 6, wherein: the heat exchange structure consists of a tail gas inlet pipe (5) penetrating through the left side wall of the device main body (1), a tail gas outlet pipe (8) penetrating through the right side wall of the device main body (1), an upper heat exchanger main body (13) and a lower heat exchanger main body (14) which are arranged between the tail gas inlet pipe (5) and the tail gas outlet pipe (8); the upper heat exchanger main body (13) is provided with at least one tail gas distributing pipe (16) connected with the tail gas inlet pipe (5) and at least one tail gas distributing pipe (16) connected with the tail gas outlet pipe (8); the lower heat exchanger main body (14) is provided with at least one tail gas distributing pipe (16) connected with the tail gas inlet pipe (5) and at least one tail gas distributing pipe (16) connected with the tail gas outlet pipe (8).
8. The device for drying sludge by using waste heat of tail gas as claimed in claim 7, wherein: the upper heat exchanger main body (13) and the lower heat exchanger main body (14) are both of hollow upper arc closed box body structures, and a plurality of heat exchange fins (17) which are arranged in an array manner are arranged on the upper side surface and the lower side surface of the upper heat exchanger main body (13) and the lower heat exchanger main body (14); and a channel groove (18) which vertically penetrates through the upper heat exchanger main body (13) is also arranged at the position, matched with the blanking channel (15), of the upper heat exchanger main body (13).
9. The device for drying sludge by using waste heat of tail gas according to claim 8, wherein: the upper heat exchanger body (13) is arranged between the upper-layer conveying device (10) and the lower-layer conveying device (6), and the lower heat exchanger body (13) is arranged below the lower-layer conveying device (6).
10. The device for drying sludge by using waste heat of tail gas according to claim 9, wherein: the side walls of the device main body (1) and the device top cover (2) are sequentially composed of an outer heat-insulating layer, a structure heat-insulating layer and a heat-insulating brick layer from outside to inside; the inner side of the insulating brick layer is also coated with a hydrophobic material coating.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010265317.3A CN111397351A (en) | 2020-04-07 | 2020-04-07 | Device for drying sludge by using waste heat of tail gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010265317.3A CN111397351A (en) | 2020-04-07 | 2020-04-07 | Device for drying sludge by using waste heat of tail gas |
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| CN111397351A true CN111397351A (en) | 2020-07-10 |
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| CN202010265317.3A Pending CN111397351A (en) | 2020-04-07 | 2020-04-07 | Device for drying sludge by using waste heat of tail gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483559A (en) * | 2021-08-17 | 2021-10-08 | 怀化市文理生物资源开发有限公司 | Drying equipment utilizing flue gas waste heat |
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| CN108178486A (en) * | 2018-03-03 | 2018-06-19 | 山东蓄势再生资源有限公司 | Municipal sludge drying and other treatment system |
| CN211903664U (en) * | 2020-04-07 | 2020-11-10 | 成都德菲环境工程有限公司 | Device for drying sludge by using waste heat of tail gas |
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| WO2008092374A1 (en) * | 2007-01-26 | 2008-08-07 | Zhixiao Zhang | A belt-type agitating multilevel sludge drying device with recycled secondary steam |
| KR20130036889A (en) * | 2011-10-05 | 2013-04-15 | 조대연 | Method for manufacturing of g-lite |
| KR20160097544A (en) * | 2015-02-09 | 2016-08-18 | 주식회사 마이크로에너지 | Sludge drying apparatus |
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| CN113483559A (en) * | 2021-08-17 | 2021-10-08 | 怀化市文理生物资源开发有限公司 | Drying equipment utilizing flue gas waste heat |
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