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新型立式真空清洗炉 |
Vertical Vacuum Pyrolysis Cleaning Device (NEW) VVPC Suitable for higher cleaning requirements Cleaning Objects: Filter of PET，PBT，PA，Spandex，Viscosefibre， Spin-pack of PET，PBT，PA，Spandex，Viscosefibre， Occasion of high cleaning requirements Cleaning Objects     Principle: The spin packs/filter to be cleaned are placed in a suitable arrangement in the process chamber.When the cover has been closed and the program has started, The vacuum is created using a water ring pump. The exhaust air cooler is activated in parallel with switching on the pump(to cool hot process gases) and the catalytic converter is brought up to operating temperature using pre-heated atmospheric air.The process chamber is heated as soon as the catalytic converter has reached its operating temperature. Cleaning stage:  A. Melting stage During heating up(150℃),the PET materials adhering to the spin packs to be cleaned first all become liquid but do not decompose thermally. The melting plastic flows via a discharge trough into the cooler melt container,where it can cool down and then be removed for the further processing stage.  B.Pyrolysis stage On reaching the decomposition temperature of the respective polymer,the heat output is regulated automatically in the process chamber in such a way that the best possible conversion is guaranteed in the catalytic converter.  C.Oxidation stage The oxygen is added to the process chamber to oxidise any remaining residues of the organic products of decomposition. Any remaining inorganic residues on the cleaned components can easily be removed mechanically,  D.Cooling stage The process chamber heating is switched off during the cooling stage and the catalytic cleaning of the exhaust gas remains active until the program ends.  Exhaust gas catalytic processing device: the device is installed at the entrance of the vacuum pipe, and is composed of a pipeline, a stainless steel mesh, a catalyst and an air inlet valve. When vacuuming, sticky dust produced by vacuum pyrolysis furnace combustion temperature of 600 ℃, generate ash and gas, overcome the phenomenon of blocking pipeline material,emits only carbon dioxide, water and excess oxygen. Take Device model VVPC-1250T as example ※Power supply:380V,50Hz Total: 58KW Chamber:48KW, Catalytic converter:6KW, Pump:4KW ※Average consumption:About 30% electric power ※Water supply Consumption：~0.3m3/H Water Inlet pressure：0.3-0.6MPa Water inlet temperature：5-30℃ Water intake:RP1” ※Cleaning time: 8-26 hours, (due to the characteristics of the melt and the number of melt on the filter are different, cleaning time is not the same) ※Catalyst converter Temperature range：350-600 Degree/度 Only emit carbon dioxide, water and excess oxygen. ※explosion relief valve Opening pressure：0.01MPa ※Water ring vacuum pump Absolute vacuum degree：0.2-0.4bar Power：4KW ※Hydraulic cylinder To move the cover，1 sets ※N2: pressure：0.3-0.6MPa intake:RP1” ※Control mode By PLC + touch screen centralized control, process parameters set ※Security measures A. Over temperature alarm When the temperature exceeds the set temperature of 10℃ (adjustable), and automatically cut off the heating power. B. Alarm for open circuit of thermocouple When the instrument "PV" display (UUUU), and automatically cut off the heating power. C. Without water, low water pressure alarm (sound and light) By the pressure relay, detect the water pressure when the water or the water pressure is lower than the set value, automatically stop working vacuum pump, and automatically cut off the power. D. Over-pressure alarm (sound and light)：When the pressure exceeds 0.01Mpa, automatically open the explosion relief valve, and cut off all the heating power . Open the nitrogen valve and close the nitrogen valve to the furnace in 5 minutes. E. Vacuum pump does not run or vacuum pump in the process of vacuum is lower than the lower limit of -0.035MPa, equipment alarm, while cut off the heating power within "1 minutes", and at the same time opening the explosion relief valve, to protect. F. Furnace heating in a period of time did not reach the set value, the equipment alarm, while cut off the heating power within 1 minutes, meanwhile opening the explosion relief valve, to protect Structural features : Vacuum cleaning furnace by vacuum furnace, furnace cover mechanism, loading rack operation mechanism, stainless steel electric heating tube, waste collection device, gas heating, catalytic treatment, water spray cleaning device, water ring vacuum pump, gas-water separator and a microcomputer program system, water, gas path, etc. 1、Oven cover adopts hydraulic drive, easy and convenient to operate. 2、A nitrogen inlet is arranged on the hearth, when low vacuum or the vacuum pump is stopped, nitrogen solenoid valve is automatically opened to fill nitrogen gas into the furnace to ensure the safety of the equipment . 3、The door is sealed by the sealing structure, the sealing ring is high temperature resistant flexible silicone rubber, sealing ring is arranged in the door flange. 4、The heating system is made of stainless steel electric heating tube, which is installed inside the furnace. Exhaust gas treatment is installed in the upper part of the furnace. Waste collection tank is a horizontal structure, there are semicircular containing waste drawer, pulled out a drawer, you can easily drained waste, waste collection tank number is 1 sets. 5、Exhaust gas catalytic processing device: the device is installed at the entrance of the vacuum pipe, and is composed of a pipeline, a stainless steel mesh, a catalyst and an air inlet valve. When vacuuming, sticky dust produced by vacuum pyrolysis furnace combustion temperature of 600 ℃, generate ash and gas, overcome the phenomenon of blocking pipeline material,emits only carbon dioxide, water and excess oxygen. 6、Water spray purification device: the furnace dust by vacuum pipeline anti blocking device of ash combustion generated, by the spraying apparatus of a stainless steel Pall rings (filling rate of 80%) spray filtration and purification, and then to the vacuum pump, vacuum pump does not constitute pollution, to ensure the normal use of water ring vacuum pump. And the pump connected by soft connection. 7、Gas-water separation allows water & gas separation, reducing the workshop environmental pollution,discharged by the vacuum pump after water spray and Pall rings filtered, through the filter and the exhaust gas treatment device, water can achieve environmental protection standards and emissions directly. 8、From "gas treatment" began, all the way down to the front end of a vacuum pump, including a cooling tube and the trachea which connected to the vacuum pump, the entire flange connection, easy to disassemble and repair. 9、Explosion proof device:： to prevent the occurrence of pressure loss of vacuum furnace inner case, top set pneumatic explosion-proof device. 10、Anti-water flow back function： A check valve is arranged on the connecting pipe between the water spray scrubber and vacuum pump. Vacuum pump and water spray washing of the water supply pipeline, set solenoid valve respectively, double protection. Diagrammatic sketch :  |
