CN105953566A - Heat pump assisted type drying system and method - Google Patents
Heat pump assisted type drying system and method Download PDFInfo
- Publication number
- CN105953566A CN105953566A CN201610312964.9A CN201610312964A CN105953566A CN 105953566 A CN105953566 A CN 105953566A CN 201610312964 A CN201610312964 A CN 201610312964A CN 105953566 A CN105953566 A CN 105953566A
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- CN
- China
- Prior art keywords
- heat pump
- air
- hot blast
- exhaust
- heater
- Prior art date
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Classifications
-
- 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
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- 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
- F26B21/10—Temperature; Pressure
-
- 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
Abstract
The invention discloses a heat pump assisted type drying system and method. The heat pump assisted type drying system comprises a heat pump, a main warm air pipeline, warm air branch pipes, branch valves, reheating devices, temperature sensors, drying boxes, exhaust branch pipes, a main exhaust pipeline, a tail gas purifier, an air preheater, an air inlet pipeline and an induced draft fan. According to the heat pump assisted type drying system and method, on the one hand, incremental heating is conducted through the heat pump and the reheating devices, the heating efficiency is improved through the heat pump, step optimized heating of the system is achieved, the energy consumption efficiency of the system is improved, and energy consumption is lowered; and on the other hand, through independent control over branch reheating, the requirement for drying temperature differentiation of the system is met, the adaptation level of the system to the drying process is improved, and the heat pump assisted type drying system and method have wide industrial application prospects.
Description
Technical field
The present invention relates to a kind of heat pump auxiliary type drying system and method, belong to heat pump drying field.
Background technology
Heat pump is as a kind of energy-efficient equipment, in the commercial production such as life heating, industrially drying and life
Have a wide range of applications, for improving energy consumption efficiency, reduce energy consumption and have great importance, be to support
An important ring of China's energy-saving and emission-reduction development strategy.
The maximum feature of heat-pump apparatus is exactly to consume a small amount of high-grade energy (electric energy, high-temperature steam, flue gas)
While make use of low temperature heat energy (such as air energy, underground heat, water source), it is thus achieved that low temperature heat energies in a large amount of.It is worth
Although it is noted that the middle low temperature heat energy that heat pump obtains is with a wide range of applications, but there is also
Certain limitation.Generally, heat pump is obtained in that the temperature of heat energy is about 60 DEG C, by more level
Number and improve cold-producing medium, it is possible to obtain maximum temperature be also only 90 DEG C.And, along with the rising of temperature,
The COP of heat pump can decline, and economy also can reduce.But, more many dry fields, baking temperature
Requirement reaches 120～150 DEG C, the highest, and now, single heat pump cannot meet.But,
Simple utilizes high-grade energy, and system energy consumption is the highest, is unfavorable for the economy of system.Therefore, how
While making full use of heat pump energy conservation characteristic, high temperature drying system energy efficiency can be improved again, reduce energy consumption,
Become drying system and develop the key issue faced.
Simultaneously, owing to being limited by technique, the baking temperature in different process stage is different, because of
, for a large-scale drying system, the demand of different baking temperature may be there is at synchronization in this.
Therefore, how to meet synchronization both different temperatures demands, the energy consumption of drying system can reduced again, improving
Energy Efficiency Ratio, also becomes the direction of novel dried system development.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency, propose a kind of heat pump auxiliary type drying system and method.
For achieving the above object, the present invention is by the following technical solutions:
A kind of heat pump auxiliary type drying system include heat pump, hot blast main road, hot blast bypass duct, branch road valve,
After-heater, temperature sensor, drying baker, exhaust branch pipe, exhaust main pipeline, exhaust purifier,
Air preheater, intake stack, air-introduced machine.Air preheater, intake stack, heat pump, hot blast main road
Being sequentially connected, if being parallel with hot dry wind bypass duct on hot blast main road, each hot blast bypass duct is respectively with dry
Dry tank inlet is connected, and drying baker outlet is connected with an exhaust branch pipe respectively, all exhaust branch manifold collection
Be connected with exhaust main pipeline (9) afterwards, exhaust main pipeline after exhaust purifier with the heated side of air preheater
Entrance is connected, and intake stack is provided with air-introduced machine, and hot blast bypass duct streamwise is sequentially installed with branch road
Valve, after-heater, temperature sensor.
Described after-heater uses electric tube heater, strip heater, electromagnetic heater or fin
Pipe heater.
Described heat pump uses conventional property heat pump, such as air source, water source, geothermal-source heat pump, lithium bromide absorption
Formula heat pump or solar heat pump.
Described hot air-introduced machine is frequency conversion fan.
A kind of drying means using described heat pump auxiliary type drying system, it is pre-that new air first passes through air
Hot device preheats, and the air after preheating is warmed up to 50～70 DEG C by heat pump, utilizes the higher COP of heat pump,
Reduce the energy consumption level that warm-up phase heats up；Hot-air after intensification enters hot blast branch road through hot blast main road
Pipe, the after-heater in each hot blast bypass duct divides according to the baking temperature demand of drying baker on respective branch road
Do not carry out independent intensification heating, meet the different temperatures demand of drying baker on branch road, utilize drying baker simultaneously
Exhaust heat as the thermal source of air preheater, it is achieved the different heating stage maximizes improves the efficiency of heating surface,
Reach the purpose of step optimization heating, improve the energy utilization efficiency of system；Meanwhile, by control
The opening and closing of road valve and valve opening size realize the independence of different branch traffic demand and control.
The present invention compared with prior art has the advantage that
(1) present invention utilizes heat pump to solve the energy consumption problem in low-temperature heat stage in drying system, improves
The efficiency of heating, improves the overall efficiency level of system eventually through step optimization heating.
(2) present invention is by the independent heating on branch roads system, it is achieved that heating system meets difference simultaneously and adds
Hot temperature requirements, improves the heating system adaptation level to the differentiation of heating technique.
Accompanying drawing explanation
Fig. 1 is a kind of heat pump auxiliary type drying system structural representation
In figure: heat pump 1, hot blast main road 2, hot blast bypass duct 3, branch road valve 4, after-heater 5,
Temperature sensor 6, drying baker 7, exhaust branch pipe 8, exhaust main pipeline 9, exhaust purifier 10, air
Preheater 11, intake stack 12, air-introduced machine 13.
Detailed description of the invention
As it is shown in figure 1, a kind of heat pump auxiliary type drying system, including heat pump 1, hot blast main road 2, hot blast
Bypass duct 3, branch road valve 4, after-heater 5, temperature sensor 6, drying baker 7, exhaust branch pipe 8,
Exhaust main pipeline 9, exhaust purifier 10, air preheater 11, intake stack 12, air-introduced machine 13.Air
Preheater 11, intake stack 12, heat pump 1, hot blast main road 2 are sequentially connected, on hot blast main road 2 also
If being associated with hot dry wind bypass duct 3, each hot blast bypass duct 3 is connected with drying baker 7 entrance respectively, drying baker
7 outlets are connected with exhaust branch pipe 8 respectively, and the exhaust branch pipe 8 of some parallel connections collects rear and exhaust main pipeline
9 are connected, and exhaust main pipeline 9 heated side entrance with air preheater 11 after exhaust purifier 10 is connected,
Being provided with air-introduced machine 13 on intake stack 12, hot blast bypass duct 3 streamwise is sequentially installed with branch road valve
4, after-heater 5, temperature sensor 6.
Described after-heater 5 includes electric tube heater, strip heater, electromagnetic heater and wing
Sheet pipe heater.Described heat pump 1 includes conventional property heat pump, as air source, water source, geothermal-source heat pump,
Lithium bromide absorption type heat pump, solar heat pump.Described hot air-introduced machine 13 is frequency conversion fan.
Drying means based on described a kind of heat pump auxiliary type drying system, new air first passes through air preheat
Device 11 preheats, and the air after preheating is warmed up to 50～70 DEG C, due to the COP phase of heat pump by heat pump 1
Higher for the miscellaneous part CPO in system, thus greatly reduce the energy consumption level of this stage intensification,
Hot-air after intensification enters hot blast bypass duct 3 through hot blast main road 2, two in each hot blast bypass duct 3
Secondary heater 5 carries out independent intensification heating respectively according to the baking temperature demand of drying baker 7 on respective branch road,
Meet the different temperatures demand of drying baker 7 on branch road, utilize the exhaust heat of drying baker 7 as air simultaneously
The thermal source of preheater 11, it is achieved the different heating stage maximizes the efficiency that improve heating, reaches step optimization
The purpose of heating, improves the energy utilization efficiency of system.Meanwhile, branch road valve 4 opening and closing and
Valve opening size achieves the purpose that the independence of different branch traffic demand controls.
The specific works process of the present invention is as follows:
System, according to the air quantity demand of branch road drying baker, opens the electrodynamic valve that the drying baker that works on branch road is connected,
Forming heat exchange path, by the air quantity of converter regulation air-introduced machine, new air is warmed up to by heat pump
50～70 DEG C；System is opened according to the air quantity characteristics of demand on each branch road, the valve individually controlled on each branch road
Degree size so that the air quantity entering each branch road reaches requirement；After air after Bei Jiare enters branch road, it is
System, according to the baking temperature demand of each branch road drying baker, distinguishes the heating power of after-heater on controlling brancher,
And power and the shutdown process of heater is controlled by the temperature sensor feedback of drying baker entrance so that enter
The temperature of drying baker reaches drying process demand.Simultaneously, the flue gas of drying baker outlet is through tail gas clean-up
After device purifies, inflow preheater, as the thermal source of air preheater, carries out waste heat, further to new air
Recovery section heat.
By the enforcement of the present invention, first, heat pump is utilized to improve the drying baker primary general character temperature rise period
The efficiency of heating surface, the diversity temperature to different heating device, it is achieved that individually post bake so that whole system
System achieves step optimization heating, improves the energy consumption efficiency of system, reduces energy consumption, and, meet
The baking temperature differentiated demand of individual branch road exsiccator.Additionally, native system is in implementation process, the most fully profit
With the waste heat of drying baker afterbody, furthermore achieved that the purpose reducing energy consumption.
The present invention for meeting the most single heating of different temperatures process requirements moderate (less than 1MW)
Distributed dry heat system, the plastics dry run of the similar and different temperature requirements of such as multiple stage, Nicotiana tabacum L.
Be dried, the drying of wood etc., there is prospects for commercial application widely.
Claims (5)
1. a heat pump auxiliary type drying system, it is characterised in that include heat pump (1), hot blast main road (2),
Hot blast bypass duct (3), branch road valve (4), after-heater (5), temperature sensor (6), drying baker
(7), exhaust branch pipe (8), exhaust main pipeline (9), exhaust purifier (10), air preheater (11),
Intake stack (12) and air-introduced machine (13)；Air preheater (11), intake stack (12), heat pump (1),
Hot blast main road (2) is sequentially connected, hot blast main road (2) if on be parallel with hot dry wind bypass duct (3),
Each hot blast bypass duct (3) is connected with drying baker (7) entrance respectively, drying baker (7) outlet respectively with
Exhaust branch pipe (8) is connected, and all exhaust branch pipes (8) are connected with exhaust main pipeline (9) after collecting,
Exhaust main pipeline (9) heated side entrance with air preheater (11) after exhaust purifier (10) is connected,
Being provided with air-introduced machine (13) on intake stack (12), hot blast bypass duct (3) streamwise is installed successively
There are branch road valve (4), after-heater (5) and temperature sensor (6).
A kind of heat pump auxiliary type drying system the most according to claim 1, it is characterised in that described two
Secondary heater (5) includes electric tube heater, strip heater, electromagnetic heater or finned tube heater.
A kind of heat pump auxiliary type drying system the most according to claim 1, it is characterised in that described heat
Pump (1) is conventional property heat pump, including air source, water source, geothermal-source heat pump, lithium bromide absorption type heat pump or
Solar heat pump.
A kind of heat pump auxiliary type drying system the most according to claim 1, it is characterised in that described heat
Air-introduced machine (13) is frequency conversion fan.
5. utilizing a drying means for heat pump auxiliary type drying system described in claim 1, its feature exists
In: new air first passes through air preheater (11) and preheats, and the air after preheating passes through heat pump (1)
It is warmed up to 50～70 DEG C, utilizes the higher COP of heat pump, reduce the energy consumption level that warm-up phase heats up；Rise
Hot-air after temperature enters hot blast bypass duct (3), each hot blast bypass duct (3) through hot blast main road (2)
Interior after-heater (5) is carried out solely respectively according to the baking temperature demand of drying baker (7) on respective branch road
Vertical intensification heating, meets the different temperatures demand of drying baker on branch road (7), utilizes drying baker (7) simultaneously
Exhaust heat as the thermal source of air preheater (11), it is achieved the different heating stage maximizes improves heating
Efficiency, reaches the purpose of step optimization heating, improves the energy utilization efficiency of system；Meanwhile, pass through
The opening and closing of controlling brancher valve (4) and valve opening size realize the independence of different branch traffic demand and control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312964.9A CN105953566B (en) | 2016-05-11 | 2016-05-11 | A kind of heat pump auxiliary type drying system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312964.9A CN105953566B (en) | 2016-05-11 | 2016-05-11 | A kind of heat pump auxiliary type drying system and method |
Publications (2)
| Publication Number | Publication Date |
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| CN105953566A true CN105953566A (en) | 2016-09-21 |
| CN105953566B CN105953566B (en) | 2019-01-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478001A (en) * | 2017-08-25 | 2017-12-15 | 利辛县宝隆橡塑密封件有限责任公司 | A kind of rubber parts drying equipment |
| CN108224930A (en) * | 2018-01-09 | 2018-06-29 | 广东环葆嘉节能科技有限公司 | Single cycle wind turbine hot air drying system |
| CN108426428A (en) * | 2018-05-02 | 2018-08-21 | 天津城建大学 | Based on CO2The high/low temperature locellus drying system of Trans-critical cycle heat pump cycle |
| CN109307423A (en) * | 2018-10-24 | 2019-02-05 | 广东环葆嘉节能科技有限公司 | A kind of hot air drying system and its control method |
| CN115401012A (en) * | 2022-09-15 | 2022-11-29 | 山东新华医疗器械股份有限公司 | Multi-cabin large cleaning sterilizer and gas-liquid circulation system thereof |
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| JP2007303756A (en) * | 2006-05-12 | 2007-11-22 | Mayekawa Mfg Co Ltd | Drying method and drying system |
| CN103005116A (en) * | 2012-12-24 | 2013-04-03 | 黄宇 | Air-source heat circulation drying device and automatic temperature control method thereof |
| RU2514556C1 (en) * | 2013-01-10 | 2014-04-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Воронежский государственный университет инженерных технологий" (ФГБОУ ВПО "ВГУИТ") | Air preparation device incorporating heat pump |
| CN204513991U (en) * | 2015-04-03 | 2015-07-29 | 西安永创节能设备有限公司 | The high temperature heat pump printing drying system that a kind of Inner eycle secondary recovery utilizes |
| CN105258474A (en) * | 2015-11-11 | 2016-01-20 | 汉新（福建）能源投资发展有限公司 | Energy-saving and emission-reducing air energy stone dryer and drying line and drying process thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007303756A (en) * | 2006-05-12 | 2007-11-22 | Mayekawa Mfg Co Ltd | Drying method and drying system |
| CN103005116A (en) * | 2012-12-24 | 2013-04-03 | 黄宇 | Air-source heat circulation drying device and automatic temperature control method thereof |
| RU2514556C1 (en) * | 2013-01-10 | 2014-04-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Воронежский государственный университет инженерных технологий" (ФГБОУ ВПО "ВГУИТ") | Air preparation device incorporating heat pump |
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| CN105258474A (en) * | 2015-11-11 | 2016-01-20 | 汉新（福建）能源投资发展有限公司 | Energy-saving and emission-reducing air energy stone dryer and drying line and drying process thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478001A (en) * | 2017-08-25 | 2017-12-15 | 利辛县宝隆橡塑密封件有限责任公司 | A kind of rubber parts drying equipment |
| CN108224930A (en) * | 2018-01-09 | 2018-06-29 | 广东环葆嘉节能科技有限公司 | Single cycle wind turbine hot air drying system |
| CN108224930B (en) * | 2018-01-09 | 2023-10-20 | 广东环葆嘉节能科技有限公司 | Hot air drying system of single-circulation fan |
| CN108426428A (en) * | 2018-05-02 | 2018-08-21 | 天津城建大学 | Based on CO2The high/low temperature locellus drying system of Trans-critical cycle heat pump cycle |
| CN109307423A (en) * | 2018-10-24 | 2019-02-05 | 广东环葆嘉节能科技有限公司 | A kind of hot air drying system and its control method |
| CN115401012A (en) * | 2022-09-15 | 2022-11-29 | 山东新华医疗器械股份有限公司 | Multi-cabin large cleaning sterilizer and gas-liquid circulation system thereof |
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| Publication number | Publication date |
|---|---|
| CN105953566B (en) | 2019-01-22 |
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