CN105486065A - Heat balance type dryer - Google Patents
Heat balance type dryer Download PDFInfo
- Publication number
- CN105486065A CN105486065A CN201610036375.2A CN201610036375A CN105486065A CN 105486065 A CN105486065 A CN 105486065A CN 201610036375 A CN201610036375 A CN 201610036375A CN 105486065 A CN105486065 A CN 105486065A
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- China
- Prior art keywords
- heat exchange
- communicated
- steam
- casing
- steel belt
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a heat balance type dryer in the field of manufacturing of papermaking, brewing and sludge treatment industrial equipment. The heat balance type dryer comprises a sealed box. A feeding valve and a discharging valve are arranged on the box and have the air locking function. A rotary conveying steel belt is arranged in the box. A heat exchange condenser is arranged in the rotary conveying steel belt and communicated with a steam outlet of a centrifugal steam compressor. A steam inlet of the steam compressor is communicated with the box. The other end of the heat exchange condenser is communicated with a condensate pump. An electric heating auxiliary heating device is arranged between the heat exchange condenser and a steam outlet of the steam compressor. A non-condensable gas vacuum pump is arranged between the heat exchange condenser and the condensate pump. A solid and water mixture is adopted as a fed material, a solid and water separator is discharged, no change of other energy happens in the drying process, only the temperature of the fed material is raised through input energy, and great energy is saved. The drying process is carried out in the completely sealed box, dust discharging is eradicated, and the environment is not polluted.
Description
Technical field
The present invention relates to papermaking, brewage, Treatment of Sludge industrial equipment manufactures field, specifically refer to and moisture higher material carried out dry a kind of thermal balance type dryer.
Background technology
Papermaking, brewage, the relevant industries such as Treatment of Sludge moisture higher material is dehydrated, it is a great problem of industrial production and waste residue, Treatment of Sludge all the time, traditional Separation of Solid and Liquid mainly uses the filter plants such as centrifugal dehydrator, belt filter press, plate and frame filter press, vacuum press filter from liquid by solid filtering out, thus reach the object of Separation of Solid and Liquid, due to the restriction by equipment and process, these equipment inefficiencys, easily block, and clear up very difficult.
It is reported, only domestic sludge one, the annual generation about 6,000 ten thousand tons in the whole nation, traditional technical scheme is that centrifuge or belt filter press process, the moisture percentage in sewage sludge 80%-85% that they produce, in liquid pureed, be difficult to transport, store up easily smelly, post processing cost is very high, at present based on landfill disposal.
The applicant has has researched and developed successfully a kind of shell and tube enrichment facility, and obtain Chinese invention patent mandate, patent No. 201410333199X, notification number CN104056479B, the technical scheme adopted: (1) straight tube upper end in cylindrical shell connects vibrator, vibrate during de-cake, accelerate filter cake and come off; (2) straight tube is circumferentially provided with air inlet, and with compressed air blowback during de-cake, filter cake comes off soon; (3) the coated screen cloth of chimney filter appearance, screen cloth puts filter bag again, and screen cloth forms filtrate guide layer in chimney filter appearance, and through hole filtrate be guided to nearby is discharged, and improve the rate of filtration, protection filter bag is not damaged.Above scheme solves the above difficult problem existed in prior art.Moisture content after cake filtration, from original 95-99%, is reduced to about 80%.
The above-mentioned filter cake of moisture about 80% needs to continue to dry, and reduces below moisture content to 30%, just can reach the object be recycled.Current way uses dryer to carry out heating, drying, and the kind of dryer mainly contains the following two kinds:
1, roller drying machine: a kind of horizontal revolving roller drying machine, it is common a kind of drying plant, low price, but energy consumption is high, the thermal source of dryer is from burner, revolving cylinder is in tilting to install, spiral flight is established in cylinder, hot gas enters from cylinder is high-end, low side out, material enters from cylinder low side, repeatedly taken up by spiral flight, under the effect of gravity and spiral flight, material forms uniform curtain in cylinder, thermal current fully and in cylinder carries out heat exchange, repeatedly raise due to material and spread, contained moisture is dried gradually, thus reach the object of oven dry.Being mainly used to the water content such as dryer coal slime, flyash, sand, quartz sand, chicken manure is not very high material.
2, mesh-belt type drier: utilize steel mesh to carry out the drying equipment of continuous drying as transport tape delivery material, be suitable for drying rule or irregular various block, as: coal cinder, breeze, food, vegetables etc.
Through facts have proved for many years, above-mentioned two kinds of dryers all cannot be competent at moisture content 80% filter cake oven dry, and drying course filter cake easily sticks to revolving cylinder inwall, also easily sticks on steel mesh, is very difficult to cleaning.
From State Intellectual Property Office website can recognize multiple disclosed in, the patent higher with the application's degree of correlation.
Patent 1: Novel industrial sludge drying machine, notification number CN201901628U, technical scheme: flight is set at revolving cylinder inwall, at revolving cylinder axis, place arranges rotating shaft, rotating shaft is provided with chain, flight can prevent from material sticks at cylinder inboard wall and material is produced rolling, and chain can smash the lump material that drying course is formed, and increases material heating surface area.During work, cylinder rotates, and rotating shaft is also rotated, and this is the improvement version of roller drying machine, and object is raised the efficiency, and it dries the thermal source or outside hot gas of coming in that use, the same with conventional rollers dryer in essence.
Patent 2: sludge dryer, notification number CN104710096A, technical scheme: place arranges rotating shaft at revolving cylinder axis, rotating shaft surface is provided with the heat dissipation plate that some helical forms are arranged, rotating shaft and heat dissipation plate are hollow and are interconnected, heat dissipation plate be circumferentially also provided with baffle plate, rotating shaft is steam inlet, another side is drain valve, i.e. delivery port.During work, revolving cylinder is motionless, and rotating shaft and heat dissipation plate rotate, and thermal source is the steam entering rotating shaft.This is indirect drying, and namely directly dry by steam instead of hot gas, this patent has certain energy-saving effect, but heating steam also needs mass energy, and the heat in the hot water of discharging after heating does not utilize, waste.
Above-mentioned two patents are some improvement on conventional rollers dryer, have technological progress, but its essence does not change, and energy consumption is still higher, does not still meet energy-conserving and environment-protective requirement, requires further improvement.
Summary of the invention
In order to solve above-mentioned prior art Problems existing, the invention provides simple efficient a kind of thermal balance type dryer.
The technical scheme that the present invention uses is as follows:
A kind of thermal balance type dryer, comprise a seal case, on the top, one end of casing, charging aperture is set, in the other end bottom of casing, discharging opening is set, revolution conveying steel belt is set in described casing, arrange heat exchange condensers in revolution conveying steel belt inside, heat exchange condensers is communicated with vapour compression machine venthole, and the air intake of vapour compression machine is communicated with casing; The other end of described heat exchange condensers is communicated with condensate pump.
Between described heat exchange condensers and vapour compression machine venthole, be provided with assisted heating device; Between described heat exchange condensers and condensate pump, be provided with fixed gas vavuum pump; Described revolution conveying steel belt is driven by motor, and described vapour compression machine is centrifugal vapor compressor; Described charging aperture and discharging opening are provided with locking airway dysfunction and inlet valve and outlet valve.
The preferred electric heater unit of assisted heating device, at the beginning of start, use when vapor (steam) temperature is lower, when normally running, the energy that steam-condensation institute's liberated heat and vapour compression machine are brought into is enough to the operation of maintenance system, without the need to auxiliary heating.Fixed gas vavuum pump is air vacuum pump, takes air away, ensures to be in negative pressure state in casing.
The present invention inspires in well-known principle, and middle and primary schools' textbook is mentioned, when water evaporates under negative pressure, required temperature is lower, and namely negative pressure evaporation reduces the vapour pressure of water surface, makes the easy explosive evaporation of the water capacity.Such as in highlands such as Tibet, because air forces down, namely heating water to 90 DEG C comes to life, and after boiling, evaporation is accelerated greatly.Because boiling point reduces, make to be dried material and condenser produces the larger temperature difference, be conducive to material and absorb heat from heat exchanger, therefore the present invention is based on negative pressure evaporation.In addition, the heat energy contained by water vapour is very large, if directly discharged, wastes energy.The present invention just this part energy recovery, for heated material.Namely both allowed material heat up, and made again the vapour pressure on material surface reduce, work along both lines, greatly accelerate the evaporation of the moisture in material, and reach significant energy-conservation object.
The course of work of the present invention is: material enters into the casing of dryer from inlet valve, slowly carried to the port of export by conveying steel belt, at course of conveying, the heat of condenser output is passed to material by conveying steel belt, temperature of charge is made to increase, simultaneously, due to the swabbing action of vapour compression machine, certain negative pressure is produced in casing, the moisture content of material on steel band is evaporated at a lower temperature, the steam be evaporated is after compressor compression, temperature raises, the water of high temperature and high pressure steam after compression under heat exchange condensers is condensed into normal temperature, and discharge a large amount of heat, these heats are returned to again the material on steel band, the moisture of evaporation material, periodic duty like this.
Water in the material that inlet valve enters, finally all discharges through condensate pump, reaches the object of oven dry, and remaining solid siccative, is transported to the port of export by steel band, discharges drying body chassis through outlet valve.
In the course of the work, inlet valve and blow-off valve all can have a small amount of air to enter to system, and these air also can be extracted out by vapour compression machine, and form on-condensible gas, therefore a minipump is installed in the present invention additional, aspirates these on-condensible gases.The assisted heating device that the present invention is supporting, can electricity consumption, coal, gas, oil or steam heat compressor gas out or condensed water, this device only uses in system initial start stage.
The invention has the beneficial effects as follows:
(1) material input by the present invention is solid and water, and what discharge is also solid and water, and temperature of charge is just improved tens degree by the energy inputted, and energy-saving effect is obvious.Traditional dryer, the material of entering also is solid and water, discharge be solid and water vapour, more than 80% of energy consumption consumes and becomes on steam at water, and the present invention saves this energy consumption of more than 80% just, reaches energy-conservation object.
(2) drying course of the present invention carries out in complete hermetic casing, has stopped the discharge of dust, also greatly reduces the impact on working environment and social environment of issuable foul smell in material drying.Traditional dryer, drying course is discharged along with water vapour, has a large amount of dust to discharge, even if installed dust arrester, still have certain fine dust and discharge, this is one of source of PM2.5.And the hot and humid Odor control cost that a large amount of steam is taken out of is very high.
Accompanying drawing explanation
Fig. 1 is a kind of thermal balance type dryer schematic diagram.
In figure, 1-fixed gas vavuum pump, 2-casing, 3-locking airway dysfunction inlet valve, 4-conveying steel belt, 5-centrifugal vapor compressor vibrator, 6-assisted heating device, 7-locking airway dysfunction outlet valve, 8-heat exchange condensers, 9-condensate pump.
Detailed description of the invention
Fig. 1 is a kind of thermal balance type dryer, comprise a seal case 2, inlet valve 3 and the outlet valve 7 of locking airway dysfunction are set at casing, revolution conveying steel belt 4 is set in casing, revolution conveying steel belt inside arranges heat exchange condensers 8, heat exchange condensers is communicated with centrifugal vapor compressor 5 venthole, and the air intake of vapour compression machine is communicated with casing, and the other end of heat exchange condensers is communicated with condensate pump 9.
Between heat exchange condensers and vapour compression machine venthole, be provided with electrical heating assisted heating device 6; Between heat exchange condensers and condensate pump, be provided with fixed gas vavuum pump 1.Revolution conveying steel belt drives (not shown) by motor.
Parameter when the present invention works is: after material enters casing, is carried to the port of export by conveying steel belt, and the heat of condenser output passes to material by conveying steel belt, and temperature of charge rises, and the moisture in material evaporates between 40-100 DEG C.Meanwhile, due to the swabbing action of vapour compression machine, produce certain negative pressure in drying body chassis, also contribute to the evaporation of moisture content in material.The steam of the material evaporation output on steel band, after compressor compression, temperature raises as 70-150 DEG C, steam pressure is 0-0.5MPa, the water of high temperature and high pressure steam after compression under heat exchange condensers is condensed into normal temperature, and discharging a large amount of heat, these heats are returned to again the material on steel band, the moisture in evaporation material.Water under heat exchange condensers is condensed into normal temperature, is discharged outside casing by condensate pump.The a small amount of air entered from inlet valve and outlet valve is then discharged outside casing by fixed gas vavuum pump, keeps being in negative pressure state in casing, and so move in circles work.
Material input by the present invention is solid and water, and what discharge is also solid and water, mixing that to be water and solid when being into be, but time out, from condensate pump out, solid siccative from outlet valve out for water.The change of other energy does not occur in drying course, and the temperature of charge of input is just improved tens degree by the energy inputted.It as water be filtered out, instead of to be evaporated.
Traditional various dryers, the material of entering is that the mixing of solid and water is done, what discharge is solid and water vapour, water in material becomes gaseous state by liquid state, absorbs a large amount of energy, and therefore traditional oven dry energy consumption is all very high, the 70%-90% of these energy consumptions consumes to become in the link of steam at moisture, 10%-30% is used in material temperature rise, and the present invention has saved the energy consumption of this 70%-90% just, and therefore energy-saving effect is obvious.
For example, traditional dryer, as electricity consumption provides oven dry thermal source, often dry the mud of 1 ton of moisture content 80%, dry to moisture content 20%, power consumption is about 420kw.h, and the present invention only needs 60kw.h, and energy consumption is only 1/7th of traditional dryer.
This device contrasts as follows with existing drying unit comparatively advanced on the market:
The present invention is by applicant and inventor, and research and development for many years spend a large amount of manpower and materials, constantly tackle key problems, and successively captures multinomially to relate to multi-specialized, the multi-disciplinary technical barrier such as machinery, hydraulic pressure, automatically control, engineering material, finally researches and develops successfully.Batch production is dropped at present in Guangdong Yi Feng Environmental Protection Technology Co., Ltd, model machine is before on probation through too much family expenses family, generally reflects that energy-saving effect is good, also improves operating environment, have many clients to play order, the feature that user feedback is returned is summarized as follows:
One, energy consumption is low, by the moisture content of the domestic sludge of 1 ton of moisture content 80% dehydration to 10%, and only power consumption about 70KW.H, integrated cost about about 60 yuan/ton;
Two, after process, moisture content can be set in 0-40% arbitrarily on demand, and can accomplish that moisture content is lower than 5%, even can reach 0%, the recycling for domestic sludge provides more by all kinds of means;
Three, automaticity is high, and the full-automatic continuous seepage of the present invention, enters mud continuously, go out siccative continuously, unmanned.
Non-secondary pollution, the present invention works under totally enclosed environment, and can not outwards discharge anyly has gas with foreign flavor, and the mud of 80% moisture content, without the need to being diluted with water, not needing to add any conditioner yet, do not bring any new chemical contamination into;
Four, safeguard that simply the consumptive materials such as no filter-fabric, therefore, workman does not need to change the accessories such as filter cloth under dirty smelly environment.
Claims (2)
1. a thermal balance type dryer, comprise a seal case, on the top, one end of casing, charging aperture is set, in the other end bottom of casing, discharging opening is set, it is characterized in that: revolution conveying steel belt is set in described casing, arrange heat exchange condensers in revolution conveying steel belt inside, heat exchange condensers is communicated with vapour compression machine venthole, and the air intake of vapour compression machine is communicated with casing; The other end of described heat exchange condensers is communicated with condensate pump.
2. a kind of thermal balance type dryer according to claim 1, is characterized in that: between described heat exchange condensers and vapour compression machine venthole, be provided with assisted heating device; Between described heat exchange condensers and condensate pump, be provided with fixed gas vavuum pump; Described revolution conveying steel belt is driven by motor, and described vapour compression machine is centrifugal vapor compressor; Described charging aperture and discharging opening are provided with inlet valve and the outlet valve of locking airway dysfunction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036375.2A CN105486065A (en) | 2016-01-20 | 2016-01-20 | Heat balance type dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036375.2A CN105486065A (en) | 2016-01-20 | 2016-01-20 | Heat balance type dryer |
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| Publication Number | Publication Date |
|---|---|
| CN105486065A true CN105486065A (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610036375.2A Pending CN105486065A (en) | 2016-01-20 | 2016-01-20 | Heat balance type dryer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110895094A (en) * | 2019-12-06 | 2020-03-20 | 马强 | Vacuum drying machine |
| CN112856942A (en) * | 2021-01-22 | 2021-05-28 | 四川建源节能科技有限公司 | Energy-saving drying-machine |
| CN113772973A (en) * | 2021-09-07 | 2021-12-10 | 姜伟 | Improved cement material and equipment for drying improved cement material |
| US20220099369A1 (en) * | 2019-08-14 | 2022-03-31 | Amcon (Fujian) Environment Protection Equipment Co., Ltd. | Drying apparatus based on peristaltic propelling |
| CN114797133A (en) * | 2022-04-13 | 2022-07-29 | 内蒙古正合市政工程有限公司 | High salt solution mother liquor drying device that low carbon discharged |
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| JP2000015296A (en) * | 1998-07-06 | 2000-01-18 | Nakano Kimie | Vacuum evaporation type dehydrator in which sludge is charged directly into vacuum can body, heat-treated, and dehydrated by vacuum evaporation |
| CN103047843A (en) * | 2013-01-11 | 2013-04-17 | 龙岩嘉麒生物科技有限公司 | Vacuum laminating belt type drier |
| CN103102055A (en) * | 2013-01-25 | 2013-05-15 | 隋轶聪 | Energy-recycling type dryer |
| CN103708697A (en) * | 2012-09-28 | 2014-04-09 | 中国科学院理化技术研究所 | Mechanical vapor recompression (MVR) heat pump sludge drying system |
| JP2015102254A (en) * | 2013-11-22 | 2015-06-04 | 株式会社Ihi | Hydrate solid drying device |
| CN204803204U (en) * | 2015-05-14 | 2015-11-25 | 何伟才 | System for sludge drying handles |
| CN205300185U (en) * | 2016-01-20 | 2016-06-08 | 辛后安 | Thermal balance formula drying -machine |
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2016
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Patent Citations (7)
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| JP2000015296A (en) * | 1998-07-06 | 2000-01-18 | Nakano Kimie | Vacuum evaporation type dehydrator in which sludge is charged directly into vacuum can body, heat-treated, and dehydrated by vacuum evaporation |
| CN103708697A (en) * | 2012-09-28 | 2014-04-09 | 中国科学院理化技术研究所 | Mechanical vapor recompression (MVR) heat pump sludge drying system |
| CN103047843A (en) * | 2013-01-11 | 2013-04-17 | 龙岩嘉麒生物科技有限公司 | Vacuum laminating belt type drier |
| CN103102055A (en) * | 2013-01-25 | 2013-05-15 | 隋轶聪 | Energy-recycling type dryer |
| JP2015102254A (en) * | 2013-11-22 | 2015-06-04 | 株式会社Ihi | Hydrate solid drying device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220099369A1 (en) * | 2019-08-14 | 2022-03-31 | Amcon (Fujian) Environment Protection Equipment Co., Ltd. | Drying apparatus based on peristaltic propelling |
| EP3964781A4 (en) * | 2019-08-14 | 2022-12-14 | Amcon (Fujian) Environment Protection Equipment Co., Ltd. | Peristaltic propulsive drying apparatus |
| US11828533B2 (en) * | 2019-08-14 | 2023-11-28 | Amcon (Fujian) Environment Protection Equipment Co., Ltd. | Drying apparatus based on peristaltic propelling |
| CN110895094A (en) * | 2019-12-06 | 2020-03-20 | 马强 | Vacuum drying machine |
| CN112856942A (en) * | 2021-01-22 | 2021-05-28 | 四川建源节能科技有限公司 | Energy-saving drying-machine |
| CN112856942B (en) * | 2021-01-22 | 2022-04-12 | 四川建源节能科技有限公司 | Energy-saving drying-machine |
| CN113772973A (en) * | 2021-09-07 | 2021-12-10 | 姜伟 | Improved cement material and equipment for drying improved cement material |
| CN114797133A (en) * | 2022-04-13 | 2022-07-29 | 内蒙古正合市政工程有限公司 | High salt solution mother liquor drying device that low carbon discharged |
| CN114797133B (en) * | 2022-04-13 | 2023-11-28 | 内蒙古正合市政工程有限公司 | High-salt water mother liquor drying device with low carbon emission |
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Application publication date: 20160413 |