CN105835525A - Waste heat recovery and hot air type energy-saving drying control system - Google Patents
Waste heat recovery and hot air type energy-saving drying control system Download PDFInfo
- Publication number
- CN105835525A CN105835525A CN201610350782.0A CN201610350782A CN105835525A CN 105835525 A CN105835525 A CN 105835525A CN 201610350782 A CN201610350782 A CN 201610350782A CN 105835525 A CN105835525 A CN 105835525A
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- Prior art keywords
- air
- control system
- heat
- heat exchanger
- hot air
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/0403—Drying webs
- B41F23/0423—Drying webs by convection
- B41F23/0426—Drying webs by convection using heated air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/044—Drying sheets, e.g. between two printing stations
- B41F23/0463—Drying sheets, e.g. between two printing stations by convection
- B41F23/0466—Drying sheets, e.g. between two printing stations by convection by using heated air
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- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a waste heat recovery and hot air type energy-saving drying control system. The waste heat recovery and hot air type energy-saving drying control system comprises a drying oven exhaust fan (12), an exhaust air valve (21), an axial flow fan (19), a compressor (2), a heat exchanger A (1), a heat exchanger C (3) and a computer control center (14); the heat exchanger A (1) absorbs the heat energy (10) of harmful waste gas (16) exhausted by an air outlet (15) of a drying oven (11), and the heat energy (10) and the heat Z (23) generated by the compressor (2) act on the heat exchanger C (3) and then are conveyed into an air inlet (6) of the drying oven (11). According to the system, the basic heat is provided according to the Carnot principle, the COP is higher than 3.0, the heat recovered from the harmful waste gas is accumulated, the heating efficiency is greatly improved, and the energy is saved; according to the technological conditions of photogravure presses, compound machines and coating machines, the speed of an air inlet fan, the speed of the exhaust fan, the speed of the compressor for heat exchange and the angle of the exhaust air valve are adjusted in a stepless speed adjsutment mode for reducing unnecessary loss of hot air, and the harmful gas is compressed for preparing for harmful gas recovery in the second step.
Description
Technical field
The present invention relates to a kind of heat exchanger, specifically a kind of Waste Heat Recovery and hot air type energy-saving drying control system.
Background technology
Intaglio press is printing paper, and thin film is widely used in daily packaging, food, in pharmaceutical packing, general point of 4 colors are to 14 color printings, the ink of printing is with organic solvent, such as ethanol, toluene, the dilution such as acetone, baking temperature is between 40 degree to 80 degree, and conventional drying mode is steam, natural gas, electrical heating etc. add hot-air, in order to being dried in the drying baker of printer, rate of drying is typically per minute at 100 meters to 400 meters.It is big that conventional traditional approach wastes the energy, first steam loss very much, evaporating, emitting, dripping or leaking of liquid or gas, and thermal requirements is high, easily drips, corrosion, blocking, belong to post bake, COP is low, and it is expensive that natural gas lays pipeline, price is the most expensive, is that naked light is dangerous simultaneously, electrically heats, and COP is low, easily short circuit fire-prone.
Summary of the invention
This system utilizes Carnot's principle to provide basis heat, and COP reaches more than 3.0, the heat that superposition simultaneously is returned from harmful exhaust, the efficiency of heating surface is greatly improved, saves the energy, simultaneously according to intaglio press, compounding machine, the process conditions of coating machine, stepless speed regulation air intake blower fan speed, exhaust fan speed, heat exchange compressor, air draft air-valve angle reduces unnecessary hot-air and runs off, and compresses harmful gas, reclaims harmful gas for second step and prepares.
The technical scheme is that and be achieved in that: Waste Heat Recovery and hot air type energy-saving drying control system, including drying baker air exhauster (12), aerofluxus air-valve (21), axial flow blower (19), compressor (2), heat exchanger A (1), heat exchanger C (3), computer controlling center (14), heat exchanger A (1) absorbs the heat energy J (10) of the harmful exhaust (16) that drying baker (11) air outlet (15) is discharged, the heat Z (23) produced with compressor (2) acts on heat exchanger C (3) jointly, it is re-fed into the air inlet (6) of drying baker (11).
Further, described compressor (2) utilizes Carnot's principle, air inlet (4) is heated via heat exchanger H (8) by the cold air of axial flow blower (19) inspiration, the heat (10) that superposition heat exchanger (1) heat exchange comes, is re-fed into the air inlet (6) of drying baker (11).
Further, air inlet (6) position of drying baker (11) arranges air temperature sensor (13) and air pressure difference sensor (18), by computer controlling center (14) according to production technology index is previously set, automatically control the converter (17) of Intake shaft flow fan (19) and then controlIntake(22)。
Further, air inlet (6) position of drying baker (11) arranges air temperature sensor (13) and air pressure difference sensor (18), the program of production technology is previously set by computer controlling center (14) basis, automatically controls the converter (17) of air exhauster (12) and then controlExhaust air rate(7)。
Further, exhaustor arranges organic solvent concentration monitor (9), the solvent strength data that computer controlling center (14) is monitored by organic solvent concentration monitor (9), according to emission request automatic control compressor (2), air exhauster (12), the converter (7) of axial flow blower (19), control the opening angle of aerofluxus air-valve (21) simultaneously.
Further, exhaustor is provided with the activated-carbon device (5) of absorption hazardous solvent.
Further, it is provided with auxiliary electric heater unit (20) in air inlet (6) front end of drying baker (11), when ambient temperatures are low, or time more than technological requirement temperature 50 C, automatically controlled unlatching auxiliary electric heater unit (20) by computer controlling center (14), improve intake air temperature.
Further, described computer controlling center (14) is PLC.
nullThe invention have the benefit that this device uses the Carnot's principle efficiency of heating surface to be up to more than 3.2，Increase heat exchanger simultaneously and significantly absorb the heat in waste gas，It it is the mode of heating that efficiency is the highest，Than traditional approach energy-conservation more than 60%，Conventional presses is because air quantity is all Non-follow control，Do not know airflow value，The necessary datas such as blast，During such as 14 color press printing 4 color，Because not knowing airflow value，Air pressure value，Hazardous solvent residue，So also to open the air draft of 100%，Cause huge heat to drain in vain，And native system can open 4 colors printing time，Numerical value according to COMPUTER DETECTION，It is automatically switched off the air intake of remaining print couple and automatically controls the minimizing of air draft air quantity，Only this item just can save the heat required for 10 color printings in theory，14 color printer are all turned on printing the most at last，But being because each color printing is chromatography，No matter how many colors in theory，It is only possible to be comparable to the full printing ink of 2 color printings，At this moment native system can be according to printing chromatic number，Area carrys out the most corresponding intake volume，Compressor rotary speed，Air draft air quantity，And then energy loss is greatly decreased，Reach energy-conservation purpose，This device also assume responsibility for the compression function of harmful gas，Without this device，Traditional printer 100% air draft，Cause the dilution of harmful gas，Add difficulty and the energy reclaiming harmful gas，With 10 color printer，As a example by 300 meters of speed printings，100% opens air draft is likely to be breached 6 ten thousand stere aerofluxus per hour，And have employed native system and can be compressed to the capacity of 2 ten thousand steres and then save the heat of 4 ten thousand stere air，Simultaneously if it is desired to the organic solvent reclaimed in 6 ten thousand steres，With the organic solvent reclaimed in 2 ten thousand steres，Need not recompress，Concentrate the air of 4 ten thousand steres，Significantly save the recovery energy，And recovery difficult，The attached recovery adnexa invented by our company，Can effectively reclaim harmful organic solvent，Reduce the generation of haze.
Accompanying drawing explanation
Fig. 1 is the control principle drawing of this system.
Fig. 2 is pressure and air quantity graph of relation.
Fig. 3 is solvent and air quantity graph of relation.
Fig. 4 and one group of schematic diagram of printer.
Fig. 5 answers a pager's call with dry, one group of schematic diagram of coating machine.
In figure: 1, heat exchanger A；2, compressor；3, heat exchanger C；4, air inlet；5, activated-carbon device；6, air inlet；7, exhaust air rate；8, heat exchanger H；9, organic solvent concentration monitor；10, heat J；11, drying baker；12, air exhauster；13, air temperature sensor；14, computer controlling center；15, air outlet；16, harmful exhaust；17, converter；18, air pressure difference sensor；19, axial flow blower；20, auxiliary electric heater unit；21, aerofluxus air-valve；22, intake.23, heat Z.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further explained explanation.
As shown in Figure 1, Waste Heat Recovery and hot air type energy-saving drying control system, including drying baker air exhauster 12, aerofluxus air-valve 21, axial flow blower 19, compressor 2, heat exchanger A 1, heat exchanger C 3, computer controlling center 14, heat exchanger A 1 absorbs the heat energy J 10 of the harmful exhaust 16 that drying baker 11 air outlet 15 is discharged, the heat Z 23 produced with compressor 2 acts on heat exchanger C 3 jointly, is re-fed into the air inlet 6 of drying baker 11.
Compressor 2 utilizes Carnot's principle, and air inlet 4 is heated via heat exchanger H 8 by the cold air of axial flow blower 19 inspiration, the heat 10 that superposition heat exchanger 1 heat exchange comes, and is re-fed into the air inlet 6 of drying baker 11.
Air inlet 6 position of drying baker 11 arranges air temperature sensor 13 and air pressure difference sensor 18, by computer controlling center 14 according to production technology index is previously set, automatically controls the converter 17 of Intake shaft flow fan 19 and then control intake 22.
Air inlet 6 position of drying baker 11 arranges air temperature sensor 13 and air pressure difference sensor 18, by computer controlling center 14 according to the program of production technology is previously set, automatically controls the converter 17 of air exhauster 12 and then control exhaust air rate 7.
Exhaustor arranges organic solvent concentration monitor 9, computer controlling center 14 is by the solvent strength data of organic solvent concentration monitor 9 monitoring, according to emission request automatic control compressor 2, air exhauster 12, the converter 7 of axial flow blower 19, control the opening angle of aerofluxus air-valve 21 simultaneously.
Exhaustor is provided with the activated-carbon device 5 absorbing hazardous solvent.
It is provided with auxiliary electric heater unit 20 in air inlet 6 front end of drying baker 11, when ambient temperatures are low, or time more than technological requirement temperature 50 C, computer controlling center 14 automatically controls unlatching auxiliary electric heater unit 20, improve intake air temperature.
Described computer controlling center 14 is PLC.
Wherein Fig. 2 and Fig. 3 is the graph of relation between pressure, solvent and air quantity respectively, it can be seen that air quantity is the biggest, pressure is the least, and quantity of solvent is the least.Therefore we can automatically control the frequency of heat exchanger, blower fan according to this curve linear relationship by program setting.
Being to use view with printer one group with 4, Fig. 5 is to answer a pager's call with dry, and coating machine one group uses view.
The above; it is only the present invention preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the technical scope of present disclosure; according to technical scheme and inventive concept equivalent or change in addition thereof, all should contain within protection scope of the present invention.
Claims (8)
1. Waste Heat Recovery and hot air type energy-saving drying control system, it is characterised in that include drying baker air exhauster (12)
, aerofluxus air-valve (21), axial flow blower (19), compressor (2), heat exchanger A (1), heat exchanger C (3), computer controlling center (14), heat exchanger A (1) absorbs the heat energy J (10) of the harmful exhaust (16) that drying baker (11) air outlet (15) is discharged, the heat Z (23) produced with compressor (2) acts on heat exchanger C (3) jointly, is re-fed into the air inlet (6) of drying baker (11).
Waste Heat Recovery the most according to claim 1 and hot air type energy-saving drying control system, it is characterized in that, compressor (2) utilizes Carnot's principle, air inlet (4) is heated via heat exchanger H (8) by the cold air of axial flow blower (19) inspiration, the heat (10) that superposition heat exchanger (1) heat exchange comes, is re-fed into the air inlet (6) of drying baker (11).
Waste Heat Recovery the most according to claim 1 and hot air type energy-saving drying control system, it is characterized in that, air inlet (6) position of drying baker (11) arranges air temperature sensor (13) and air pressure difference sensor (18), by computer controlling center (14) according to production technology index is previously set, automatically control the converter (17) of Intake shaft flow fan (19) and then control intake (22).
Waste Heat Recovery the most according to claim 1 and hot air type energy-saving drying control system, it is characterized in that, air inlet (6) position of drying baker (11) arranges air temperature sensor (13) and air pressure difference sensor (18), the program of production technology is previously set by computer controlling center (14) basis, automatically controls the converter (17) of air exhauster (12) and then control exhaust air rate (7).
Waste Heat Recovery the most according to claim 1 and hot air type energy-saving drying control system, it is characterized in that, exhaustor arranges organic solvent concentration monitor (9), the solvent strength data that computer controlling center (14) is monitored by organic solvent concentration monitor (9), according to emission request automatic control compressor (2), air exhauster (12), the converter (7) of axial flow blower (19), control the opening angle of aerofluxus air-valve (21) simultaneously.
Waste Heat Recovery the most according to claim 1 and hot air type energy-saving drying control system, it is characterised in that on exhaustor, be provided with the activated-carbon device (5) absorbing hazardous solvent.
Waste Heat Recovery the most according to claim 1 and hot air type energy-saving drying control system, it is characterized in that, it is provided with auxiliary electric heater unit (20) in air inlet (6) front end of drying baker (11), when ambient temperatures are low, or time more than technological requirement temperature 50 C, automatically controlled unlatching auxiliary electric heater unit (20) by computer controlling center (14), improve intake air temperature.
8., according to the Waste Heat Recovery described in any one of claim 1-7 and hot air type energy-saving drying control system, described computer controlling center (14) is PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610350782.0A CN105835525A (en) | 2016-05-25 | 2016-05-25 | Waste heat recovery and hot air type energy-saving drying control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610350782.0A CN105835525A (en) | 2016-05-25 | 2016-05-25 | Waste heat recovery and hot air type energy-saving drying control system |
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| CN105835525A true CN105835525A (en) | 2016-08-10 |
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| CN201610350782.0A Pending CN105835525A (en) | 2016-05-25 | 2016-05-25 | Waste heat recovery and hot air type energy-saving drying control system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107020798A (en) * | 2017-03-07 | 2017-08-08 | 肖硕 | A kind of energy-saving printing drying system |
| CN107044773A (en) * | 2016-11-14 | 2017-08-15 | 四川省科本哈根能源科技有限公司 | High efficiency drying oven power-saving technology |
| CN108312706A (en) * | 2018-02-09 | 2018-07-24 | 东莞智源彩印有限公司 | A kind of full automatic high efficiency heated-air drying control machine for intaglio printing press |
| CN109501449A (en) * | 2018-12-07 | 2019-03-22 | 安徽瀚洋纸品印刷有限公司 | A kind of printing machine hot air circulation drying system |
| CN109624525A (en) * | 2018-12-17 | 2019-04-16 | 苏州极数印花科技有限公司 | A kind of drying unit of digit printing paper printer |
| CN109910431A (en) * | 2019-03-05 | 2019-06-21 | 西安理工大学 | It is a kind of difference ink under the monolithic processor controlled adjustable drying unit of tuyere |
| CN110181940A (en) * | 2019-07-08 | 2019-08-30 | 安徽省阜阳市国泰彩印包装有限公司 | A kind of printing energy saving baking heat pump group |
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| DE102010062145A1 (en) * | 2010-11-29 | 2012-05-31 | Koenig & Bauer Aktiengesellschaft | Printing press i.e. newspaper printing press, has thermally oxidative exhaust air cleaning stage arranged downstream of recovery device for part of dryer exhaust air stream, which leaves recovery device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044773A (en) * | 2016-11-14 | 2017-08-15 | 四川省科本哈根能源科技有限公司 | High efficiency drying oven power-saving technology |
| CN107020798A (en) * | 2017-03-07 | 2017-08-08 | 肖硕 | A kind of energy-saving printing drying system |
| CN108312706A (en) * | 2018-02-09 | 2018-07-24 | 东莞智源彩印有限公司 | A kind of full automatic high efficiency heated-air drying control machine for intaglio printing press |
| CN109501449A (en) * | 2018-12-07 | 2019-03-22 | 安徽瀚洋纸品印刷有限公司 | A kind of printing machine hot air circulation drying system |
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| CN109910431A (en) * | 2019-03-05 | 2019-06-21 | 西安理工大学 | It is a kind of difference ink under the monolithic processor controlled adjustable drying unit of tuyere |
| CN110181940A (en) * | 2019-07-08 | 2019-08-30 | 安徽省阜阳市国泰彩印包装有限公司 | A kind of printing energy saving baking heat pump group |
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Application publication date: 20160810 |