CN105042852A - Heating and recovery integrated foaming line heat supply system and control method - Google Patents
Heating and recovery integrated foaming line heat supply system and control method Download PDFInfo
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- CN105042852A CN105042852A CN201510491728.3A CN201510491728A CN105042852A CN 105042852 A CN105042852 A CN 105042852A CN 201510491728 A CN201510491728 A CN 201510491728A CN 105042852 A CN105042852 A CN 105042852A
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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
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Abstract
The invention relates to an air heating and tail gas afterheat recovery integrated system of a synthetic leather foaming system and a control method. The device indirectly heats new air through high-temperature smoke generated by burning natural gas and tail gas generated by a foaming line in a classification manner to supply hot air needed by foaming. In a high-temperature heat exchange phase, the high-temperature smoke is utilized for heating the new air discharged by a low-temperature corrosion preventing and condensation preventing heat exchanger from a medium-low temperature to a temperature needed by a foaming system; and in a low-temperature heat extraction phase, the natural gas smoke cooled by high-temperature heat exchange and the tail gas discharged by the foaming line are utilized for preheating the new air with normal temperature, and the phase change condensation latent heat of water vapor in the natural gas smoke and the tail gas afterheat of the foaming system are fully utilized. The device is simple in structure and high in integration comprehensiveness, and can be modularly combined and maintained. The later maintenance cost of the heat exchanger is effectively reduced; and the use efficiency of natural gas and heat energy of the foaming system is effectively improved.
Description
Technical field
The present invention relates to a kind of combustion of natural gas and burner application, particularly one is applicable to synthetic leather foamed system heat supply process and heat recovery technology.
Background technology
Synthetic leather foamed system utilizes about 200 DEG C of hot-airs to foam to synthetic leather, makes the primary organic solvent in synthetic leather bass, as the evaporation of DMF, DOP, DBP equal solvent and the foaming of blowing agent.The current overwhelming majority uses conduction oil synthetic leather foaming line heating system, the efficiency of utilization of this system is generally lower, also some foaming line has design to install waste-heat recovery device additional, but because complex structure, installs loaded down with trivial details and recovering effect is undesirable and do not reach real waste heat recovery.And, if use general heat recovery heat exchanger recovery waste heat for the waste gas of foaming line, because organic solvent easily condenses, is attached on the core body of heat exchanger, cause heat exchange efficiency sharply to reduce, even block.More it is a risk that may also can initiation fire or blast dangerous situation.
At present, most of synthetic leather foaming line does not all carry out waste heat.One be because foaming tail gas main component easily condense, easily adhere to, inflammable; Not easily reclaim.Two is because do not have the value of waste heat recovery for common heat-conducting oil heating foaming line, needs to transform its heat-supplying mode waste heat recovery ability valuable simultaneously.
Summary of the invention
The object of this invention is to provide a kind of heating, reclaim integrated foaming line heating system.
The present invention realizes by the following technical solutions: one heats, reclaims integrated foaming line heating system, it is characterized in that: comprise combustor, natural gas high-temperature flue gas generation chamber, exhaust emissions blower fan, high-temperature section heat exchanger, low-temperature zone heat collector, air input blower fan, control system; Described natural gas high-temperature flue gas generation chamber entrance connects described combustor exhanst gas outlet; Described high-temperature section heat exchanger thermal fluid inlet side is communicated in the exhanst gas outlet of natural gas high-temperature flue gas generation chamber; The cold air fluid intake of described high-temperature section heat exchanger is connected with the cold air fluid issuing of low-temperature zone heat collector; Described high-temperature section heat exchanger air hot-air fluid issuing and foaming line outlet are connected with the entrance of the hot-air fluid of low-temperature zone heat collector; The outlet of described low-temperature zone heat collector is connected with described exhaust emissions blower fan; Air intake and the described air of described low-temperature zone heat collector input blower fan; Described control system inputs blower fan be connected with the hot air outlet of described high-temperature section heat exchanger, air respectively.
In an embodiment of the present invention, described control system comprises the temperature sensor, D/A converter, PLC, A/D converter, the variable frequency adjustment device that connect successively; Described temperature sensor is arranged at described high-temperature section heat exchanger air hot-air fluid outlet; Described variable frequency adjustment device and described air input blower fan drives structure and are connected.
Further, described control system also comprises a display screen, and described display screen exports with one of described PLC and is connected.
In an embodiment of the present invention, described low temperature heat collector air intake place is provided with double-filtration net.
In an embodiment of the present invention, described air input blower fan is an axial fan.
The present invention also provides a kind of based on above-mentioned heating, the control method reclaiming integrated foaming line heating system, it is characterized in that: comprise the following steps: step S1: the temperature of described temperature sensor measurement high-temperature section heat exchanger heat outputting air, import the temperature signal of measurement into A/D converter simultaneously, analog signal is converted to data signal by described A/D converter, and is input to PLC; Step S2: described PLC presets a temperature threshold, if the temperature measured is greater than described threshold value, PLC exports a signal to D/A converter, data signal is converted to analog signal by described D/A converter, control the electric machine frequency that described variable frequency adjustment device reduces described air input blower fan, reduce input air, reduce the temperature of hot-air; If the temperature measured is less than described threshold value, PLC exports a signal to D/A converter, and data signal is converted to analog signal by described D/A converter, controls the electric machine frequency that described variable frequency adjustment device improves described air input blower fan, increase the new air of input, improve the temperature of hot-air.
The invention provides a kind of heating, recuperation of heat integration foaming line heating system and operation method, by the high-temperature flue gas that combustion of natural gas produces, utilize air heat that low-temperature zone heat exchanger is come by indirect heat exchanger to temperature required, avoid high-temperature flue gas and directly enter foaming line and cause the potential safety hazard increasing and catch fire, explode.The flue gas of middle low temperature and tail gas enter low-temperature zone heat collector jointly, the new air of preheating.
The heat-supplying mode of the present invention to foaming line is transformed, and structure is simple novel, maintain easily, automation temperature controls; Meanwhile, effectively raise the service efficiency of natural gas, economize energy, decreasing pollution thing discharges, and reduces the potential safety hazard of foaming line; Simply be easy to realize.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the system block diagram of automatic control system.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
The present invention realizes by the following technical solutions: one heats, reclaims integrated foaming line heating system, it is characterized in that: comprise combustor 1, natural gas high-temperature flue gas generation chamber 2, exhaust emissions blower fan 3, high-temperature section heat exchanger 10, low-temperature zone heat collector 4, air input blower fan 5, control system; Described natural gas high-temperature flue gas generation chamber 2 entrance connects described combustor 1 and exports; Described high-temperature section heat exchanger heat 10 fluid intake sides are communicated in the exhanst gas outlet of natural gas high-temperature flue gas generation chamber 2; The cold air fluid intake of described high-temperature section heat exchanger 10 is connected with the cold air fluid issuing of low-temperature zone heat collector 4; The hot-air fluid issuing of described high-temperature section heat exchanger 10 and foaming line outlet are connected with the entrance of the hot-air fluid of low-temperature zone heat collector 4; The outlet of described low-temperature zone heat collector 4 is connected with described exhaust emissions blower fan 3; Air intake and the described air of described low-temperature zone heat collector 4 input blower fan 5; Described control system inputs blower fan be connected with the hot air outlet of described high-temperature section heat exchanger, air respectively.Structural representation of the present invention is see Fig. 1.
Also DOP condensation is had because flue gas natural in low temperature heat collector can produce condensate corrosion and flue gas.So this section of heat exchanger regular taking-up can be convenient to cleaning or change heat exchanger core body.
Preferably, connect between each equipment with square air channel, each airduct and each equipment all do adiabatic Insulation, reduce radiation loss.
The concrete size of high and low temperature heat exchanger has required air quantity and temperature computation to draw, and the type selecting of natural gas combustion engine and blower fan will meet and can provide corresponding heat and air quantity.
In an embodiment of the present invention, described control system comprises the temperature sensor 12, D/A converter 11, PLC8, A/D converter 7, the variable frequency adjustment device 6 that connect successively; Described temperature sensor is arranged at described high-temperature section heat exchanger air hot-air fluid outlet; Described variable frequency adjustment device and described air input blower fan drives structure and are connected.The Automatic Control Theory of control system is see Fig. 2.
Further, described control system also comprises a display screen 9, and described display screen 9 exports with one of described PLC and is connected.
In an embodiment of the present invention, described low temperature heat collector air intake place is provided with double-filtration net.The solid sundries that the tail gas preventing foaming line from discharging contains, reduces the heat exchange efficiency of low temperature heat collector after mixing or block with the viscosity DOP after condensation.
In an embodiment of the present invention, described air input blower fan is an axial fan.
The present invention also provides a kind of based on above-mentioned heating, the control method reclaiming integrated foaming line heating system, it is characterized in that: comprise the following steps: step S1: the temperature of described temperature sensor measurement high-temperature section heat exchanger heat outputting air, import the temperature signal of measurement into A/D converter simultaneously, analog signal is converted to data signal by described A/D converter, and is input to PLC; Step S2: described PLC presets a temperature threshold, if the temperature measured is greater than described threshold value, PLC exports a signal to D/A converter, data signal is converted to analog signal by described D/A converter, control the electric machine frequency that described variable frequency adjustment device reduces described air input blower fan, reduce input air, reduce the temperature of hot-air; If the temperature measured is less than described threshold value, PLC exports a signal to D/A converter, and data signal is converted to analog signal by described D/A converter, controls the electric machine frequency that described variable frequency adjustment device improves described air input blower fan, increase the new air of input, improve the temperature of hot-air.
In other embodiments, high-temperature section heat exchanger exit also can be provided with motor-driven axial fan, more easily realizes the input of high-temperature flue gas and foaming line exhaust gas heat fluid.
Those skilled in the art can make various amendment to this specific embodiment or supplement or adopt similar mode to substitute under the principle of this practicality and the prerequisite of essence, but these changes all fall into protection scope of the present invention.Therefore the technology of the present invention scope is not limited to above-described embodiment.
Claims (6)
1. heat, reclaim an integrated foaming line heating system, it is characterized in that: comprise combustor, natural gas high-temperature flue gas generation chamber, exhaust emissions blower fan, high-temperature section heat exchanger, low-temperature zone heat collector, air input blower fan, control system;
Described natural gas high-temperature flue gas generation chamber entrance connects described combustor exhanst gas outlet; Described high-temperature section heat exchanger thermal fluid inlet side is communicated in the exhanst gas outlet of natural gas high-temperature flue gas generation chamber; The cold air fluid intake of described high-temperature section heat exchanger is connected with the cold air fluid issuing of low-temperature zone heat collector; Described high-temperature section heat exchanger air hot-air fluid issuing and foaming line outlet are connected with the entrance of the hot-air fluid of low-temperature zone heat collector; The outlet of described low-temperature zone heat collector is connected with described exhaust emissions blower fan; Air intake and the described air of described low-temperature zone heat collector input blower fan; Described control system inputs blower fan be connected with the hot air outlet of described high-temperature section heat exchanger, air respectively.
2. heating according to claim 1, reclaim integrated foaming line heating system, it is characterized in that: described control system comprises the temperature sensor, A/D converter, PLC, D/A converter, the variable frequency adjustment device that connect successively; Described temperature sensor is arranged at described high-temperature section heat exchanger air hot-air fluid outlet; Described variable frequency adjustment device and described air input blower fan drives structure and are connected.
3. heating according to claim 1, reclaim integrated foaming line heating system, it is characterized in that: described control system also comprises a display screen, described display screen exports with one of described PLC and is connected.
4. heating according to claim 1, reclaim integrated foaming line heating system, it is characterized in that: described low temperature heat collector air intake place is provided with double-filtration net.
5. heating according to claim 1, reclaim integrated foaming line heating system, it is characterized in that: described air input blower fan is an axial fan.
6., based on the heating described in claim 1-5, the control method reclaiming integrated foaming line heating system, it is characterized in that: comprise the following steps:
Step S1: the temperature of described temperature sensor measurement high-temperature section heat exchanger heat outputting air, import the temperature signal of measurement into A/D converter, analog signal is converted to data signal by described A/D converter, and is input to PLC simultaneously;
Step S2: described PLC presets a temperature threshold, if the temperature measured is greater than described threshold value, PLC exports a signal to D/A converter, data signal is converted to analog signal by described D/A converter, control the electric machine frequency that described variable frequency adjustment device reduces described air input blower fan, reduce input air, reduce the temperature of hot-air; If the temperature measured is less than described threshold value, PLC exports a signal to D/A converter, and data signal is converted to analog signal by described D/A converter, controls the electric machine frequency that described variable frequency adjustment device improves described air input blower fan, increase the new air of input, improve the temperature of hot-air.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510491728.3A CN105042852A (en) | 2015-08-12 | 2015-08-12 | Heating and recovery integrated foaming line heat supply system and control method |
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| CN201510491728.3A CN105042852A (en) | 2015-08-12 | 2015-08-12 | Heating and recovery integrated foaming line heat supply system and control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316019A (en) * | 2017-12-29 | 2018-07-24 | 广德大金机械有限公司 | A kind of intelligence dermatine processing thermal circulation method |
| CN109028569A (en) * | 2018-09-09 | 2018-12-18 | 无锡博众热能环保设备有限公司 | A kind of flue gas complete alternation hot-blast stove |
Citations (4)
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| JPS58175749A (en) * | 1982-04-07 | 1983-10-15 | Iwao Kubo | Hot-water heater by making use of remaining heat of flue gas |
| CN104566957A (en) * | 2014-12-30 | 2015-04-29 | 南京宜热纵联节能科技有限公司 | System device for supplying high-temperature clean hot air |
| CN104676887A (en) * | 2015-03-26 | 2015-06-03 | 王坤 | Unattended electric control hot-blast stove |
| CN204943889U (en) * | 2015-08-12 | 2016-01-06 | 福州大学 | Heat, reclaim integrated foaming line heating system |
-
2015
- 2015-08-12 CN CN201510491728.3A patent/CN105042852A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58175749A (en) * | 1982-04-07 | 1983-10-15 | Iwao Kubo | Hot-water heater by making use of remaining heat of flue gas |
| CN104566957A (en) * | 2014-12-30 | 2015-04-29 | 南京宜热纵联节能科技有限公司 | System device for supplying high-temperature clean hot air |
| CN104676887A (en) * | 2015-03-26 | 2015-06-03 | 王坤 | Unattended electric control hot-blast stove |
| CN204943889U (en) * | 2015-08-12 | 2016-01-06 | 福州大学 | Heat, reclaim integrated foaming line heating system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316019A (en) * | 2017-12-29 | 2018-07-24 | 广德大金机械有限公司 | A kind of intelligence dermatine processing thermal circulation method |
| CN109028569A (en) * | 2018-09-09 | 2018-12-18 | 无锡博众热能环保设备有限公司 | A kind of flue gas complete alternation hot-blast stove |
| CN109028569B (en) * | 2018-09-09 | 2024-01-05 | 无锡博众热能环保设备有限公司 | Flue gas full-cycle hot-blast stove |
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