CN204943889U - Heat, reclaim integrated foaming line heating system - Google Patents
Heat, reclaim integrated foaming line heating system Download PDFInfo
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- CN204943889U CN204943889U CN201520603782.8U CN201520603782U CN204943889U CN 204943889 U CN204943889 U CN 204943889U CN 201520603782 U CN201520603782 U CN 201520603782U CN 204943889 U CN204943889 U CN 204943889U
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- 238000005187 foaming Methods 0.000 title claims abstract description 28
- 238000010438 heat treatment Methods 0.000 title claims abstract description 25
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 28
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003546 flue gas Substances 0.000 claims abstract description 19
- 239000003345 natural gas Substances 0.000 claims abstract description 14
- 239000012530 fluid Substances 0.000 claims description 19
- 238000011084 recovery Methods 0.000 claims description 16
- 239000006260 foam Substances 0.000 claims description 5
- 239000002918 waste heat Substances 0.000 abstract description 9
- 239000007789 gas Substances 0.000 abstract description 8
- 238000009833 condensation Methods 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000002649 leather substitute Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Air Supply (AREA)
Abstract
本实用新型涉及一种加热、回收一体化发泡线供热系统。该装置是通过燃烧天然气产生的高温烟气和发泡线产生的尾气分级间接加热新空气用于供应发泡所需热空气。高温换热阶段利用高温烟气将经过低温防腐防凝结换热器出来的新空气从中低温加热到发泡系统所需的温度；低温取热阶段利用高温换热后降温的天然气烟气和发泡线排放出来的尾气共同对常温的新空气进行预热，充分利用天然气烟气的水蒸气的相变冷凝潜热与和发泡系统的尾气余热。本装置结构简单，一体化综合性高，可以模块化组合和维护。有效的降低了后期换热器的维护成本，有效的提高天然气和发泡系统热能使用效率。
The utility model relates to a heating and recycling integrated foaming line heating system. The device uses the high-temperature flue gas produced by burning natural gas and the tail gas produced by the foaming line to indirectly heat the fresh air to supply the hot air required for foaming. In the high-temperature heat exchange stage, high-temperature flue gas is used to heat the new air coming out of the low-temperature anti-corrosion and anti-condensation heat exchanger from medium and low temperature to the temperature required by the foaming system; The tail gas discharged from the line jointly preheats the new air at normal temperature, making full use of the latent heat of phase change condensation of the water vapor in the natural gas flue gas and the waste heat of the tail gas of the foaming system. The device has simple structure, high integration and comprehensiveness, and can be modularized and maintained. It effectively reduces the maintenance cost of the heat exchanger in the later stage, and effectively improves the heat energy utilization efficiency of the natural gas and foaming system.
Description
技术领域 technical field
本实用新型涉及一种天然气燃烧与燃烧装置应用领域，特别涉及一种适用于合成革发泡系统供热技术和余热回收技术。 The utility model relates to a natural gas combustion and the application field of a combustion device, in particular to a heat supply technology and waste heat recovery technology suitable for synthetic leather foaming systems.
背景技术 Background technique
合成革发泡系统是利用约200℃热空气对合成革进行发泡，使合成革贝斯中的主要有机溶剂，如DMF、DOP、DBP等溶剂的蒸发和发泡剂的发泡。目前绝大多数都是使用导热油合成革发泡线加热系统，该系统的热利用效率普遍比较低，也有些发泡线有设计加装余热回收装置，但是因为结构复杂，安装繁琐和回收效果不理想而未达到真正的余热回收。而且,如果对于发泡线的废气使用一般的余热回收换热器回收余热,由于有机溶剂容易凝结、附着在换热器的芯体上，导致换热效率急剧降低，甚至堵塞。更危险的是可能还会引发火灾或者爆炸险情。 The synthetic leather foaming system uses about 200°C hot air to foam the synthetic leather, so that the main organic solvents in the synthetic leather base, such as DMF, DOP, DBP and other solvents, evaporate and the foaming agent foams. At present, most of them use thermal oil synthetic leather foaming line heating system. The heat utilization efficiency of this system is generally low, and some foaming lines are designed to install waste heat recovery devices, but because of the complex structure, the installation is cumbersome and the recovery effect is low. It is not ideal and has not achieved real waste heat recovery. Moreover, if a general waste heat recovery heat exchanger is used to recover waste heat from the waste gas of the foaming line, the heat exchange efficiency will drop sharply or even be blocked because the organic solvent is easy to condense and adhere to the core of the heat exchanger. What's more dangerous is that it may cause fire or explosion.
目前，大部分合成革发泡线都未进行余热。一是因为发泡尾气主要成分易凝结、易附着、易燃；不易回收。二是因为对于普通的导热油加热发泡线没有余热回收的利用价值，需要同时改造其供热方式余热回收才有价值。 At present, most synthetic leather foaming lines do not carry out waste heat. One is because the main components of foaming exhaust gas are easy to condense, adhere, and flammable; it is not easy to recycle. The second is because there is no use value for waste heat recovery for ordinary heat transfer oil heating foaming lines, and it is necessary to transform its heating method at the same time for waste heat recovery to be valuable.
发明内容 Contents of the invention
本实用新型的目的是提供一种加热、回收一体化发泡线供热系统。 The purpose of the utility model is to provide a heating and recovery integrated foaming line heating system.
本实用新型采用以下技术方案实现：一种加热、回收一体化发泡线供热系统，其特征在于：包括燃烧机、天然气高温烟气发生室、尾气排放风机、高温段换热器、低温段取热器、空气输入风机、控制系统；所述天然气高温烟气发生室入口接所述燃烧机烟气出口；所述高温段换热器热流体入口侧连通于天然气高温烟气发生室的烟气出口；所述高温段换热器的冷空气流体入口与低温段取热器的冷空气流体出口连接；所述高温段换热器空气热空气流体出口及发泡线出口与低温段取热器的热空气流体的入口连接；所述低温段取热器的出口与所述尾气排放风机连接；所述低温段取热器的空气入口与所述空气输入风机；所述控制系统分别与所述高温段换热器的热空气出口、空气输入风机连接。 The utility model is realized by adopting the following technical solutions: a heating and recovery integrated foaming line heating system, which is characterized in that it includes a burner, a natural gas high-temperature flue gas generating chamber, an exhaust fan, a high-temperature section heat exchanger, and a low-temperature section heat extractor, air input fan, and control system; the inlet of the natural gas high-temperature flue gas generation chamber is connected to the flue gas outlet of the burner; the hot fluid inlet side of the high-temperature section heat exchanger is connected to the flue gas Air outlet; the cold air fluid inlet of the heat exchanger in the high temperature section is connected to the cold air fluid outlet of the heat extractor in the low temperature section; the air hot air fluid outlet and the foaming line outlet of the heat exchanger in the high temperature section are connected to the low temperature section The inlet of the hot air fluid of the heat extractor is connected; the outlet of the low temperature section heat extractor is connected with the exhaust exhaust fan; the air inlet of the low temperature section heat extractor is connected with the air input fan; the control system is respectively connected with the exhaust gas discharge fan. The hot air outlet of the high temperature section heat exchanger and the air input fan are connected.
在本实用新型一实施例中，所述控制系统包括依次连接的温度传感器、D/A转换器、PLC、A/D转换器、变频调节器；所述温度传感器设置于所述高温段换热器空气热空气流体出口处；所述变频调节器与所述空气输入风机驱动结构连接。 In an embodiment of the utility model, the control system includes a temperature sensor, a D/A converter, a PLC, an A/D converter, and a frequency conversion regulator connected in sequence; The hot air fluid outlet of the device; the frequency conversion regulator is connected with the air input fan driving structure.
进一步的，所述控制系统还包括一显示屏，所述显示屏与所述PLC的一输出连接。 Further, the control system further includes a display screen connected to an output of the PLC.
在本实用新型一实施例中，所述的低温取热器空气入口处设置有两级过滤网。 In an embodiment of the present invention, the air inlet of the low-temperature heat collector is provided with two-stage filter screens.
在本实用新型一实施例中，所述空气输入风机为一轴流式风机。 In one embodiment of the present utility model, the air input fan is an axial flow fan.
本实用新型对发泡线的供热方式进行改造，结构简单新颖、方便维护、自动化温度控制；同时，有效的提高了天然气的使用效率，节约能源，减少污染物排放，降低了发泡线的安全隐患；简单而易于实现。 The utility model reforms the heating mode of the foaming line, which has a simple and novel structure, convenient maintenance and automatic temperature control; at the same time, it effectively improves the use efficiency of natural gas, saves energy, reduces pollutant discharge, and reduces the cost of the foaming line. Security implications; simple and easy to implement.
附图说明 Description of drawings
图1为本实用新型的结构示意图。 Fig. 1 is the structural representation of the utility model.
图2为自动控制系统的系统框图。 Figure 2 is a system block diagram of the automatic control system.
具体实施方式 detailed description
下面结合附图和具体实施方式对本实用新型做进一步说明。 The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.
本实用新型采用以下技术方案实现：一种加热、回收一体化发泡线供热系统，其特征在于：包括燃烧机1、天然气高温烟气发生室2、尾气排放风机3、高温段换热器10、低温段取热器4、空气输入风机5、控制系统；所述天然气高温烟气发生室2入口接所述燃烧机1出口；所述高温段换热器热10流体入口侧连通于天然气高温烟气发生室2的烟气出口；所述高温段换热器10的冷空气流体入口与低温段取热器4的冷空气流体出口连接；所述高温段换热器10的热空气流体出口及发泡线出口与低温段取热器4的热空气流体的入口连接；所述低温段取热器4的出口与所述尾气排放风机3连接；所述低温段取热器4的空气入口与所述空气输入风机5；所述控制系统分别与所述高温段换热器的热空气出口、空气输入风机连接。本实用新型的结构示意图参见图1。 The utility model is realized by adopting the following technical solutions: a heating and recovery integrated foaming line heating system, which is characterized in that it includes a burner 1, a natural gas high-temperature flue gas generating chamber 2, an exhaust exhaust fan 3, and a high-temperature section heat exchanger 10. Low-temperature section heat extractor 4, air input fan 5, control system; the entrance of the natural gas high-temperature flue gas generating chamber 2 is connected to the outlet of the burner 1; the fluid inlet side of the high-temperature section heat exchanger heat 10 is connected to natural gas The flue gas outlet of the high-temperature flue gas generating chamber 2; the cold air fluid inlet of the high-temperature section heat exchanger 10 is connected with the cold air fluid outlet of the low-temperature section heat extractor 4; the hot air fluid of the high-temperature section heat exchanger 10 The outlet and the outlet of the foaming line are connected to the inlet of the hot air fluid of the low temperature section heat extractor 4; the outlet of the low temperature section heat extractor 4 is connected to the tail gas discharge fan 3; The inlet is connected with the air input fan 5; the control system is respectively connected with the hot air outlet of the high temperature section heat exchanger and the air input fan. The structural representation of the utility model is shown in Fig. 1.
由于低温取热器中天然烟气会产生冷凝腐蚀和烟气也会有DOP凝结。所以该段换热器可以定期的取出便于清洗或者更换换热器芯体。 Because the natural flue gas in the low-temperature heat extractor will produce condensation corrosion and flue gas will also have DOP condensation. Therefore, this section of heat exchanger can be taken out regularly to facilitate cleaning or replacement of the heat exchanger core.
较佳的，各个设备之间用方形风道连接，各风管以及各设备均有做绝热保温措施，减少散热损失。 Preferably, square air ducts are used to connect each equipment, and heat insulation measures are taken for each air duct and each equipment to reduce heat loss.
高、低温换热器的具体尺寸有所需的风量和温度计算得出，而天然气燃烧机和风机的选型要满足能够提供相应的热量和风量。 The specific size of the high and low temperature heat exchangers is calculated based on the required air volume and temperature, while the selection of the natural gas burner and fan should meet the requirements to provide the corresponding heat and air volume.
在本实用新型一实施例中，所述控制系统包括依次连接的温度传感器12、D/A转换器11、PLC8、A/D转换器7、变频调节器6；所述温度传感器设置于所述高温段换热器空气热空气流体出口处；所述变频调节器与所述空气输入风机驱动结构连接。控制系统的自动控制原理参见图2。 In an embodiment of the utility model, the control system includes a temperature sensor 12, a D/A converter 11, a PLC 8, an A/D converter 7, and a frequency conversion regulator 6 connected in sequence; the temperature sensor is arranged on the The hot air fluid outlet of the heat exchanger in the high temperature section; the frequency conversion regulator is connected with the air input fan driving structure. See Figure 2 for the automatic control principle of the control system.
进一步的，所述控制系统还包括一显示屏9，所述显示屏9与所述PLC的一输出连接。 Further, the control system also includes a display screen 9, and the display screen 9 is connected to an output of the PLC.
在本实用新型一实施例中，所述的低温取热器空气入口处设置有两级过滤网。防止发泡线排出的尾气含有的固体杂物，与凝结后的粘性DOP混合后将低温取热器的换热效率降低或者堵塞。 In an embodiment of the present invention, the air inlet of the low-temperature heat collector is provided with two-stage filter screens. Prevent the solid impurities contained in the tail gas discharged from the foaming line from mixing with the condensed viscous DOP to reduce or block the heat transfer efficiency of the low-temperature heat collector.
在本实用新型一实施例中，所述空气输入风机为一轴流式风机。 In one embodiment of the present utility model, the air input fan is an axial flow fan.
在本实用新型的其他实施例中，高温段换热器出口处也可以设有电机驱动的轴流式风机，更容易实现高温烟气与发泡线尾气热流体的输入。 In other embodiments of the present invention, a motor-driven axial flow fan may also be provided at the outlet of the heat exchanger in the high-temperature section, so that it is easier to realize the input of high-temperature flue gas and hot fluid from the tail gas of the foaming line.
上述加热、回收一体化发泡线供热系统的控制方法，包括以下步骤：步骤S1：所述温度传感器测量高温段换热器输出热空气的温度，同时将测量的温度信号传入A/D转换器，所述A/D转换器将模拟信号转换为数字信号，并输入到PLC；步骤S2：所述PLC预先设定一温度阈值，若测量的温度大于所述阈值，PLC输出一信号到D/A转换器，所述D/A转换器将数字信号转换为模拟信号，控制所述变频调节器降低所述空气输入风机的电机频率，减少输入空气，降低热空气的温度；若测量的温度小于所述阈值，PLC输出一信号到D/A转换器，所述D/A转换器将数字信号转换为模拟信号，控制所述变频调节器提高所述空气输入风机的电机频率，增加输入新空气，提高热空气的温度。 The control method of the heating and recovery integrated foaming line heating system includes the following steps: Step S1: The temperature sensor measures the temperature of the hot air output by the heat exchanger in the high temperature section, and at the same time transmits the measured temperature signal to the A/D Converter, the A/D converter converts the analog signal into a digital signal and inputs it to the PLC; Step S2: the PLC presets a temperature threshold, if the measured temperature is greater than the threshold, the PLC outputs a signal to D/A converter, the D/A converter converts the digital signal into an analog signal, controls the frequency conversion regulator to reduce the motor frequency of the air input fan, reduces the input air, and reduces the temperature of the hot air; if the measured When the temperature is less than the threshold value, the PLC outputs a signal to the D/A converter, and the D/A converter converts the digital signal into an analog signal, controls the frequency conversion regulator to increase the motor frequency of the air input fan, and increases the input Fresh air raises the temperature of hot air.
本领域技术人员可以在不违背本实用的原理和实质的前提下对本具体实施例做出各种修改或补充或者采用类似的方式替代，但是这些改动均落入本发明的保护范围。因此本发明技术范围不局限于上述实施例。 Those skilled in the art can make various modifications or supplements to this specific embodiment or replace it in a similar manner without violating the practical principle and essence of the present invention, but these modifications all fall within the protection scope of the present invention. Therefore, the technical scope of the present invention is not limited to the above-mentioned embodiments.
Claims (5)
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| CN105042852A (en) * | 2015-08-12 | 2015-11-11 | 福州大学 | Heating and recovery integrated foaming line heat supply system and control method |
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| CN105042852A (en) * | 2015-08-12 | 2015-11-11 | 福州大学 | Heating and recovery integrated foaming line heat supply system and control method |
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