CN105403027B - Use the conduction-type drying means of efficient combination vapour source - Google Patents
Use the conduction-type drying means of efficient combination vapour source Download PDFInfo
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- CN105403027B CN105403027B CN201510880418.0A CN201510880418A CN105403027B CN 105403027 B CN105403027 B CN 105403027B CN 201510880418 A CN201510880418 A CN 201510880418A CN 105403027 B CN105403027 B CN 105403027B
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- steam
- conduction
- steam boiler
- boiler
- type drying
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Classifications
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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
- F26B23/02—Heating arrangements using combustion 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
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The present invention relates to the conduction-type drying means using efficient combination vapour source, conduction-type drying machine heat supply of the drying means using solar energy steam boiler and fueled steam boiler as combined steam source into drying system, and the steam condition in drying system is adjusted by quantity of steam adjustment equipment.The present invention greatlys save conventional energy resource, reduces pollutant emission, economic benefits.
Description
Technical field
The present invention relates to technical field of drying, especially a kind of solar boiler supplies with common steam boiler combination vapour source
The conduction-type drying means of heat.
Background technology
The field that drying process is related to is extremely wide, in chemical industry, medicine, food, papermaking, timber, grain and agricultural byproducts
The fields such as processing, building materials.
Drying machine is a kind of plant equipment that material moisture is reduced using heat energy, for object being dried operation.It is dry
Dry machine makes the hygroscopic water (referring generally to moisture or other volatile liquid components) in material vaporize effusion by heating, to be advised
Determine the solid material of moisture content.By mode of heating, drying machine is divided into the types such as convection type, conduction-type, radiant type, dielectric cleaning.Pass
Conduction drying machine is also known as indirect dryer, and it transmits heat by metal partition from thermal source using conduction pattern to wet stock,
The hygroscopic water steam of generation can be aspirated with decompression, be passed through a small amount of purge gass or in the side such as low-temperature condenser surface condensation being separately provided
Method is removed.For this drier without using dried medium, the thermal efficiency is higher, and product is not contaminated, is stored after solid product is packaged.
Drying is one of larger unit-operation of industry of energy expenditure.This is due to either dry plaster material, pulpous state
Material, or the solid material of moisture content, aqueous water will be become gaseous state, it is therefore desirable to which the enough vaporizations of supply are dived
Heat.Statistics shows that the energy consumption of drying process accounts for 12% or so of whole process energy consumption.
The content of the invention
The technical problem to be solved in the invention is to provide a kind of conduction-type drying means using efficient combination vapour source,
Using the renewable solar energy and conventional energy resource organic assembling of cleaning, conventional energy resource is greatlyd save, reduces pollutant emission,
Economic benefits.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
Using the conduction-type drying means of efficient combination vapour source, the drying means is with solar energy steam boiler and fuel
Conduction-type drying machine heat supply of the steam boiler as combined steam source into drying system, and adjusted and done by quantity of steam adjustment equipment
Steam condition in drying system.
Technical solution of the present invention further improvement is that：The drying system includes conduction-type drying machine, passes through steam
The quantity of steam adjustment equipment that input channel is connected with conduction-type drying machine, the quantity of steam adjustment equipment is with being set up in parallel too
Positive energy steam boiler and fueled steam boiler are connected；The quantity of steam adjustment equipment passes through pipeline and solar steam respectively
Boiler is connected with the steam outlet of fueled steam boiler；The indirect steam of the conduction-type drying machine discharge is returned again to too
Positive energy steam boiler and/or fueled steam boiler.
Technical solution of the present invention further improvement is that：The conduction-type drying machine is done for double blade dryers, disc type
One kind in dry machine, rake type drier.
Technical solution of the present invention further improvement is that：The solar energy steam boiler is butterfly solar steam pot
One kind in stove, groove type solar steam boiler, tower type solar steam boiler.
Technical solution of the present invention further improvement is that：The drying means specifically includes following steps,
1) drying system is set according to the connected mode of each equipment in drying system；
2) according to material to be dried parameter and the feed rate of material, during calculating dry materials, in the unit interval
Heat consumption value；
3) by the steam output parameters of quantity of steam adjustment equipment dynamic access solar energy steam boiler and fueled steam boiler,
Calculate the heat supply values I of solar energy steam boiler and the heat supply values II of fueled steam boiler；
4) steam is confessed using solar energy steam boiler according to preferential, fueled steam boiler confesses steam as supplement steam
Source, the steam supply ratio of solar energy steam boiler and fueled steam boiler is adjusted from quantity of steam adjustment equipment and is done to conduction-type
Dry machine exports steam, heat supply total value is met the heat consumption value in conduction-type drying machine.
Technical solution of the present invention further improvement is that：It is aqueous that parameter of materials in the step 2) includes material charging
Rate, material discharging moisture content, material feeding temperature and material drop temperature, the material charging moisture content is 3~80%, material
The moisture content that discharges is 0.1~40%, material feeding temperature is 20~70 DEG C, material drop temperature is 70~90 DEG C.
Technical solution of the present invention further improvement is that：Solar energy steam boiler and fuel vapour pot in the step 3)
The steam output parameters of stove include vapor (steam) temperature, steam pressure, between the time of the real-time dynamic access of quantity of steam adjustment equipment
It is divided into 2~5min.
Technical solution of the present invention further improvement is that：The steam of quantity of steam adjustment equipment output in the step 4)
Pressure is 0.2~0.5MPa, vapor (steam) temperature is 100~150 DEG C, steam flow is 100~2000m3/h。
Technical solution of the present invention further improvement is that：The quantity of steam adjustment equipment is the adjustment equipment of PLC controls,
Including display device, input unit, processing unit and the steam parameter sensor being arranged on jet chimney and steam flow control
Device processed.
By adopting the above-described technical solution, the technological progress that the present invention obtains is：
The solution of the present invention, substantial amounts of conventional energy resource and fossil fuel can be saved, power plant's peak regulation round the clock can also be played
Effect.When daytime is sunny, low-pressure steam is produced using solar heat boiler, as the thermal source of drying machine, and is commonly fired
Coal burning boiler can then be used for generating electricity with steam saving, be used for peak times of power consumption；When night is without the sun, then common thermal source is utilized
Steam energy supply, while few generating are produced, to adapt to low power consumption.
Instant invention overcomes existing solar energy optical-thermal to be used directly to the faced technical barrier that generates electricity, i.e. solar energy is difficult to
The steam for the HTHP for needing 300~400 DEG C that generates electricity is produced, by changing thinking, by solar energy heat utilization and conduction-type
Drying equipment is organically combined, and a new road is opened for Solar use.Change and traditional produced with solar energy
The steam of HTHP, and be changed to produce low-pressure steam, reduce the requirement to material and greatly reduce Solar use
Technical difficulty, save a large amount of manufacturing costs and operating cost.The think of of energy storage device must be had by changing traditional solar energy
Road, it is changed to couple with boiler of power plant, the cost of energy storage device can be subtracted.
It is of the invention compared with general heliotechnics, because solar energy steam boiler is not used in generating, it is only necessary to low pressure steam
Vapour supplies conduction-type drying machine, and prior art is more ripe, and cost is low, and equipment is reliable, low cost.And heat accumulation is not needed to set
It is standby, greatly reduce cost.And power plant's peak regulation round the clock can be played a part of.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the present invention.
Embodiment
Conduction-type drying means disclosed by the invention using efficient combination vapour source, drying means is with solar energy steam copper
The conduction-type drying machine heat supply of stove and fueled steam boiler as combined steam source into drying system, and set by quantity of steam regulation
Steam condition in standby regulation drying system.
The drying system of the present invention includes conduction-type drying machine, is connected by steam input pipe road with conduction-type drying machine
Quantity of steam adjustment equipment, the quantity of steam adjustment equipment and the solar energy steam boiler and fueled steam boiler that are set up in parallel
It is connected；The quantity of steam adjustment equipment is exported by the steam of pipeline and solar energy steam boiler and fueled steam boiler respectively
Mouth is connected；The indirect steam of the conduction-type drying machine discharge is returned again to solar energy steam boiler and/or fuel vapour pot
Stove.
The conduction-type drying machine of the present invention is one kind in double blade dryer, tray drier, rake type driers.
The present invention solar energy steam boiler for butterfly solar energy steam boiler, groove type solar steam boiler, it is tower too
One kind in positive energy steam boiler.
The drying means of the present invention specifically includes following steps,
1) drying system is set according to the connected mode of each equipment in drying system.
2) according to material to be dried parameter and the feed rate of material, during calculating dry materials, in the unit interval
Heat consumption value.
Parameter of materials in step 2) includes material charging moisture content, material discharging moisture content, material feeding temperature and thing
Expect drop temperature, the material charging moisture content is 3~80%, material discharging moisture content is 0.1~40%, material feeding temperature
It it is 70~90 DEG C for 20~70 DEG C, material drop temperature.
3) by the steam output parameters of quantity of steam adjustment equipment dynamic access solar energy steam boiler and fueled steam boiler,
Calculate the heat supply values I of solar energy steam boiler and the heat supply values II of fueled steam boiler.
The steam output parameters of solar energy steam boiler and fueled steam boiler include vapor (steam) temperature, vapour pressure in step 3)
Power, the time interval of the real-time dynamic access of quantity of steam adjustment equipment is 2~5min.
4) steam is confessed using solar energy steam boiler according to preferential, fueled steam boiler confesses steam as supplement steam
Source, the steam supply ratio of solar energy steam boiler and fueled steam boiler is adjusted from quantity of steam adjustment equipment and is done to conduction-type
Dry machine exports steam, heat supply total value is met the heat consumption value in conduction-type drying machine.
The steam pressure of quantity of steam adjustment equipment output in step 4) is 0.2~0.5MPa, vapor (steam) temperature be 100~
150 DEG C, steam flow be 100~2000m3/h。
Quantity of steam adjustment equipment is the adjustment equipment of PLC controls, including display device, input unit, processing unit and is set
Put steam parameter sensor and steam flow controller on jet chimney.
Technical scheme is further explained and illustrated with reference to specific embodiment.
Embodiment 1
The conduction-type drying means using efficient combination vapour source of the present embodiment, drying system used use above-mentioned company
The mode of connecing connects, wherein conduction-type drying machine selection tray drier, solar energy steam boiler selection butterfly solar steam pot
Stove.
The material to be dried of the present embodiment is calcium carbonate superfine powder.Parameter of materials is specially：Material feeds moisture content
12.0%th, material discharging moisture content is 0.5%, material feeding temperature is 25 DEG C, material drop temperature is 80 DEG C, material charging speed
Rate is 1000Kg/h.
The conduction-type drying means using efficient combination vapour source of the present embodiment, specifically includes following steps,
1) drying system is set according to the connected mode of each equipment in drying system.
2) according to the parameter of materials and feed rate of calcium carbonate superfine powder to be dried, during calculating dry materials, unit
Heat consumption value in time.It is about 3.505 × 10 that heat consumption value, which is calculated,5kJ/h。
Calculating process is：Material specific heat：1.254kj/kg. DEG C, 4.18kj/kg. DEG C of the specific heat of water, the evaporation latent heat of water
2275kj/kg。
Elevated temperature (25 DEG C of water temperature)=4.18* needed for the specific heat * evaporation capacity * for heat=water that water heating needs
(1000-1000* (1-0.12)/(1-0.005)) * (80-25)=26571.3kj；
Elevated temperature=1.254* (1000* (1- needed for the amount * of the specific heat * materials of material heating institute calorific requirement=material
0.12)/(1-0.005)) * (80-25)=60998.6kj；
Evaporate institute's calorific requirement=evaporation capacity * evaporation latent heats=(1000-1000* (1-0.12)/(1-0.005)) * 2275=
262939.7kj；
The heat that dry institute calorific requirement=water heating needs+material heating institute calorific requirement+evaporation institute calorific requirement=
350509.6kj。
3) by the steam output parameters of quantity of steam adjustment equipment dynamic access solar energy steam boiler and fueled steam boiler,
Calculate the heat supply values I of solar energy steam boiler and the heat supply values II of fueled steam boiler.Dynamically obtained in the present embodiment
The time interval taken is 5min.By taking the 60min periods as an example, design parameter such as following table.
Obtaining steam output parameters is specially：143 DEG C of vapor (steam) temperature, steam pressure 0.3MPaG.Heat supply is calculated
Value I is 148780kJ/h (whole day is average), and heat supply values II are 223170kJ/h (whole day is average).
4) steam is confessed using solar energy steam boiler according to preferential, fueled steam boiler confesses steam as supplement steam
Source, the steam supply ratio of solar energy steam boiler and fueled steam boiler is adjusted from quantity of steam adjustment equipment and is done to conduction-type
Dry machine exports steam, heat supply total value is met heat consumption value and heat residual value sum in conduction-type drying machine.With
Step 3) is corresponding, design parameter such as following table.
It is that solar energy steam boiler accounts for 100% that ratio is supplied in the present embodiment.
Embodiment 2
The conduction-type drying means using efficient combination vapour source of the present embodiment, drying system used use above-mentioned company
The mode of connecing connects, wherein conduction-type drying machine selection rake type drier, solar energy steam boiler selection tower type solar steam copper
Stove.
The material to be dried of the present embodiment is iron oxide yellow.Parameter of materials is specially：Material charging moisture content be 44.0%,
Material discharging moisture content is 15.8%, material feeding temperature is 30 DEG C, material drop temperature is 80 DEG C, and material feed rate is
1950Kg/h。
The conduction-type drying means using efficient combination vapour source of the present embodiment, specifically includes following steps,
1) drying system is set according to the connected mode of each equipment in drying system.
2) according to the parameter of materials and feed rate of iron oxide yellow to be dried, during calculating dry materials, during unit
Interior heat consumption value.Heat consumption value is calculated as 1.23 × 106kJ/h。
Calculating process is：Material specific heat：0.7kj/kg. DEG C, 4.18kj/kg. DEG C of the specific heat of water, the evaporation latent heat of water
2275kj/kg。
Elevated temperature (30 DEG C of water temperature)=4.18* needed for the specific heat * evaporation capacity * for heat=water that water heating needs
(1950-1950* (1-0.44)/(1-0.158)) * (80-30)=136495.4kj；
Elevated temperature=0.7* (1950* (1- needed for the amount * of the specific heat * materials of material heating institute calorific requirement=material
0.44)/(1-0.158)) * (80-30)=45391.9kj；
Evaporate institute's calorific requirement=evaporation capacity * evaporation latent heats=(1950-1950* (1-0.44)/(1-0.842)) * 2275=
1485774.9kj；
The heat that dry institute calorific requirement=water heating needs+material heating institute calorific requirement+evaporation institute calorific requirement=
1667662.2kj。
3) by the steam output parameters of quantity of steam adjustment equipment dynamic access solar energy steam boiler and fueled steam boiler,
Calculate the heat supply values I of solar energy steam boiler and the heat supply values II of fueled steam boiler.
The time interval of dynamic access is 2min in the present embodiment.By taking the 30min periods as an example, design parameter such as following table.
Steam output parameters are specially：143 DEG C of vapor (steam) temperature, steam pressure 0.3MPaG.Heat supply values I are calculated
For 684560kJ/h (whole day is average), heat supply values II are 930180kJ/h (whole day is average).
4) steam is confessed using solar energy steam boiler according to preferential, fueled steam boiler confesses steam as supplement steam
Source, the steam supply ratio of solar energy steam boiler and fueled steam boiler is adjusted from quantity of steam adjustment equipment and is done to conduction-type
Dry machine exports steam, heat supply total value is met heat consumption value and heat residual value sum in conduction-type drying machine.With
Step 3) is corresponding, design parameter such as following table.
It is that solar energy steam boiler accounts for 43.2% that ratio is supplied in the present embodiment.
Claims (8)
1. use the conduction-type drying means of efficient combination vapour source, it is characterised in that：The drying means is with solar steam
The conduction-type drying machine heat supply of boiler and fueled steam boiler as combined steam source into drying system, and adjusted by quantity of steam
Steam condition in equipment regulation drying system；
The quantity of steam that the drying system includes conduction-type drying machine, is connected by steam input pipe road with conduction-type drying machine
Adjustment equipment, the quantity of steam adjustment equipment are connected with the solar energy steam boiler and fueled steam boiler being set up in parallel；
The quantity of steam adjustment equipment is connected by pipeline with the steam outlet of solar energy steam boiler and fueled steam boiler respectively
Connect；The indirect steam of the conduction-type drying machine discharge is returned again to solar energy steam boiler and/or fueled steam boiler.
2. the conduction-type drying means according to claim 1 using efficient combination vapour source, it is characterised in that：The biography
Conduction drying machine is one kind in double blade dryer, tray drier, rake type driers.
3. the conduction-type drying means according to claim 1 using efficient combination vapour source, it is characterised in that：It is described too
Positive energy steam boiler is one in butterfly solar energy steam boiler, groove type solar steam boiler, tower type solar steam boiler
Kind.
4. the conduction-type drying means using efficient combination vapour source according to any one of claim 1 ~ 3, its feature exist
In：The drying means specifically includes following steps,
1）Drying system is set according to the connected mode of each equipment in drying system；
2）According to material to be dried parameter and the feed rate of material, during calculating dry materials, the heat in the unit interval
Consumption figures；
3）By the steam output parameters of quantity of steam adjustment equipment dynamic access solar energy steam boiler and fueled steam boiler, calculate
The heat supply values I of solar energy steam boiler and the heat supply values II of fueled steam boiler；
4）Steam is confessed using solar energy steam boiler according to preferential, fueled steam boiler confesses steam as supplement vapour source, by
Quantity of steam adjustment equipment adjusts the steam supply ratio of solar energy steam boiler and fueled steam boiler and to conduction-type drying machine
Steam is exported, heat supply total value is met the heat consumption value in conduction-type drying machine.
5. the conduction-type drying means according to claim 4 using efficient combination vapour source, it is characterised in that：The step
Rapid 2）In parameter of materials include material charging moisture content, material discharging moisture content, material feeding temperature and material drop temperature,
The material charging moisture content is that 3 ~ 80%, material discharging moisture content is that 0.1 ~ 40%, material feeding temperature is 20 ~ 70 DEG C, material
Drop temperature is 70 ~ 90 DEG C.
6. the conduction-type drying means according to claim 4 using efficient combination vapour source, it is characterised in that：The step
Rapid 3）The steam output parameters of middle solar energy steam boiler and fueled steam boiler include vapor (steam) temperature, steam pressure, the steaming
The time interval of the real-time dynamic access of vapour amount adjustment equipment is 2 ~ 5min.
7. the conduction-type drying means according to claim 4 using efficient combination vapour source, it is characterised in that：The step
Rapid 4）In quantity of steam adjustment equipment output steam pressure be 0.2 ~ 0.5MPa, vapor (steam) temperature be 100 ~ 150 DEG C, steam flow
For 100 ~ 2000m3/h。
8. the conduction-type drying means according to claim 7 using efficient combination vapour source, it is characterised in that：The steaming
Vapour amount adjustment equipment is the adjustment equipment of PLC controls, including display device, input unit, processing unit and is arranged on steam pipe
Steam parameter sensor and steam flow controller on road.
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| CN201510880418.0A CN105403027B (en) | 2015-12-03 | 2015-12-03 | Use the conduction-type drying means of efficient combination vapour source |
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| CN105403027B true CN105403027B (en) | 2018-03-13 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RS20070307A (en) * | 2007-07-17 | 2008-09-29 | Pane Kondić | Energy system for drying moist products |
| CN202141024U (en) * | 2011-07-08 | 2012-02-08 | 华北电力大学 | Solar energy and coal-fired thermal power plant auxiliary steam system integrated device |
| JP2013217588A (en) * | 2012-04-10 | 2013-10-24 | Hitachi Ltd | Method of drying low grade coal and thermal power plant using low grade coal as fuel |
-
2015
- 2015-12-03 CN CN201510880418.0A patent/CN105403027B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RS20070307A (en) * | 2007-07-17 | 2008-09-29 | Pane Kondić | Energy system for drying moist products |
| CN202141024U (en) * | 2011-07-08 | 2012-02-08 | 华北电力大学 | Solar energy and coal-fired thermal power plant auxiliary steam system integrated device |
| JP2013217588A (en) * | 2012-04-10 | 2013-10-24 | Hitachi Ltd | Method of drying low grade coal and thermal power plant using low grade coal as fuel |
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| CN105403027A (en) | 2016-03-16 |
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Effective date of registration: 20190604 Address after: 050031 No. 500 Heping East Road, Shijiazhuang City, Hebei Province Co-patentee after: HEBEI GONGDA SOLAR EQUIPMENT Co.,Ltd. Patentee after: SHIJIAZHUANG GONGDA CHEMICAL EQUIPMENT Co.,Ltd. Address before: 054001 West Side of Nanchang Village, Wangkuai Town, Xiangdu South Road, Xingtai Development Zone, Hebei Province Patentee before: HEBEI GONGDA SOLAR EQUIPMENT Co.,Ltd. |
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Effective date of registration: 20230425 Address after: 050000 science and technology building, Gongda, No. 498-1, Heping East Road, Chang'an District, Shijiazhuang City, Hebei Province Patentee after: Hebei University of technology Kehao Engineering Technology Co.,Ltd. Patentee after: SHIJIAZHUANG GONGDA CHEMICAL EQUIPMENT Co.,Ltd. Patentee after: HEBEI GONGDA SOLAR EQUIPMENT Co.,Ltd. Address before: 050031 No. 500 Heping East Road, Shijiazhuang City, Hebei Province Patentee before: SHIJIAZHUANG GONGDA CHEMICAL EQUIPMENT Co.,Ltd. Patentee before: HEBEI GONGDA SOLAR EQUIPMENT Co.,Ltd. |