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聚乙烯醇溶解加溫，應(yīng)保證車間生產(chǎn)設(shè)備正常運(yùn)行情況下進(jìn)行，避免進(jìn)、回油降溫幅度過大，造成用電量負(fù)荷大，燒毀變壓器，造成安全責(zé)任事故。
接到加溫通知后，在進(jìn)、回油溫度正常滿足車間膠粉正常運(yùn)行的前提下。啟動(dòng)導(dǎo)熱油爐送、引風(fēng)機(jī)待正常運(yùn)行后，在設(shè)定進(jìn)油溫度接近或低于2—3℃，回油溫度不低于200℃時(shí)，開啟熱交換器進(jìn)、回油閥門(先開回油閥，后開進(jìn)油閥)2—3絲。先預(yù)熱，保證導(dǎo)熱油爐回油溫度不低于200℃，等預(yù)熱30分鐘后，再逐漸開啟熱交換器進(jìn)、回油閥門，勤觀察油爐進(jìn)、回油溫度的降低，及時(shí)調(diào)整進(jìn)回油閥門，逐漸升壓到3.5kg。壓力達(dá)到3.5后，應(yīng)勤觀察換熱器壓力表讀數(shù)的變化，應(yīng)盡量保持3.5kg壓力，根據(jù)讀數(shù)變化必須及時(shí)調(diào)整進(jìn)、回油閥門。但壓力嚴(yán)禁超過4kg，嚴(yán)格避免造成人身安全傷害事故。
加溫完成(配料崗位應(yīng)及時(shí)通知)，不得完全關(guān)閉熱交換器閥門，應(yīng)開啟進(jìn)、回油閥門1—2絲。進(jìn)行預(yù)熱，盡量保持1kg壓力。避免加溫時(shí)進(jìn)、回油溫度降幅過大，影響車間車間生產(chǎn)設(shè)備正常運(yùn)行。
中譯英：
Dissolution of the polyvinyl alcohol heating, should ensure that the workshop production equipment under the conditions of normal operation, avoid, return oil cooling rate is too large, resulting in electricity load transformer, burned, resulting in the accident.
Received notice in heating, the oil return temperature, normal to meet the normal operating under the premise of plant powder. Start the heat-conducting oil furnace feeding, draught fan for normal operation, in the setting of oil inlet temperatures near or below 2℃-3 ℃, the oil return temperature is below 200 ℃, open the heat exchanger, the oil return valve(to open the oil valve, oil valve after into) 2-3 wire. Preheat, ensure the heat-conducting oil furnace oil return temperature not lower than 200 DEG C, and preheating after 30 minutes, and then gradually open the heat exchanger, the oil return valve, the industrious observation oil into, oil return temperature decreases, the timely adjustment of inlet oil return valve, gradually boost to 3.5kg. Pressure reaches 3.5, should often observed heat exchanger pressure gauge reading changes, should try to keep the pressure of 3.5kg, according to the reading must be adjusted in time, change in the oil return valve. But the pressure shall not exceed 4kg, strictly avoid safety accidents.
After heating(ingredients post shall promptly notify), may not be fully closed valve should be opened into the heat exchanger, the oil return valve,1-2 wire. Preheating, try to keep the pressure of 1kg. Avoid heating inlet, oil return temperature falling too far, affect the normal operation of the equipment of workshop production workshop.
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