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說一說玻璃自動化噴塗塗裝生産線塗裝過程中産生的VOC是什麽呢？

返回列表 作者：鵬鲲玻璃自動化噴塗塗裝生産線编辑： 400-088-0769/18025258586 来源： www.pk316.com 发布日期： 2020.11.05

玻璃自動化噴塗塗裝生産線是玻璃加工制造過程中産生“三廢”最多的環節，其中塗裝廢氣是塗裝“三廢”的主要部分。塗裝車間的廢氣主要是塗料中含有的有機溶劑和塗膜在噴塗及烘幹時的分解物，統稱爲揮發性有機化合物(VOCs)，其成份主要有甲苯和二甲苯。這些成份對人的健康和生活環境有害，並且有惡臭，人如果長期吸入低濃度的有機廢氣，會引發咳嗽、胸悶、氣喘甚至肺氣腫等慢性呼吸道疾病，是目前公認的強烈致癌物。除此之外，有機廢氣對光化學煙霧、酸雨的形成起著非常重要的作用。爲減少塗料中的VOCs,開發了水性塗料和粉末塗料，但水性塗料中仍含有一定比例的有機溶劑。爲此，各國頒布了相應的法令，限制該類氣體的排放，我國于1997年頒布並實施的GB16297《大氣汙染綜合排放標准》，限定了33種汙染物的排放限值，其中包括苯、甲苯、二甲苯等揮發性有機溶劑。近年來，隨著人們環保意識提高，環保法規不斷完善與執法力度不斷提高，汽車生産廠在新建塗裝線中需配置廢氣處理設備，對老的塗裝線也在逐步補充廢氣處理裝置，廢氣經過處理達標後才能排放。針對不同的塗裝廢氣，不同的廠家采用了不同的方法。

玻璃自動化噴塗塗裝生産線塗裝生産工藝，塗裝廢氣主要來自于噴塗、幹燥過程。所排放的汙染物主要爲：噴漆時産生的漆霧和有機溶劑，幹燥揮發時産生的有機溶劑。漆霧主要來自于空氣噴塗作業中溶劑型塗料飛散的部分，其成分與所使用的塗料一致。有機溶劑主要來自于塗料使用過程中的溶劑、稀釋劑，絕大部分屬揮發性排放，其主要的汙染物爲二甲苯、苯、甲苯等。故塗裝中排放的有害廢氣的主要發生源爲噴漆室、晾幹室、烘幹室。

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"Geronimo," mumbled the Apache, "has prayed to the Dawn and the Darkness and the Sun and the Sky to help him put a stop to those bad stories that people put in the papers about him. He is afraid it will be done as they say." The press of the country was full just then, and had been for some time past, of suggestions that the only good use the much-feared Geronimo could be put to would be hanging, the which he no doubt richly deserved. But if every one in the territories who deserved hanging had been given his dues, the land would have been dotted with blasted trees. That night Charles and his chief officers lay at Culloden House, the seat of the able and patriotic Lord-President, Duncan Forbes; but the troops were obliged to lie on the moor amid the heather, which served them both for beds and fuel, the cold being very severe. They were up early in the morning, and formed in order of battle on[106] Drummossie Muir, the part of the heath of Culloden near to Culloden House. No enemy, however, appeared, and there the poor hungry men lay for most of the day with no other food than a biscuit per man. A council of war being called, Lochiel stated this fact as a plea for delay; Lord John Drummond, the Duke of Perth, and others, were of the same opinion; but Lord George Murray declared for making a night march, and surprising the duke's army whilst it would lie, as they supposed, asleep in a drunken debauch. Charles, who had the same idea, but had not yet broached it, embraced Lord George with ardour, declaring it of all things his own wish. The idea was adopted, yet the slightest military wisdom would have shown them the futility of the scheme. The men were in a general state, not only of famine, but of discontent, from the non-payment of their arrears. The night was dark, and the men soon began to stumble through bog and mire, making their march heavy, and causing them to curse and swear. It was soon found that they were so feeble and incapable of walking, even, to say nothing of fighting after a fourteen or fifteen miles' march, on empty stomachs, that it was impossible to make the rear keep up with the van. They had calculated on being at Nairn at two o'clock, but it was that hour before they had all passed Kilravock House, only four miles from the English camp. It was clear that it would be daylight long before they reached Nairn, and they could only get there to be slaughtered in helplessness, for they would be too tired either to fight or run away. It was therefore agreed to return. Nicholas Hawksmoor, a pupil of Wren's, and an assistant of Vanbrugh's in building Castle Howard and Blenheim House, was the architect of St. George's-in-the-East, Ratcliff Highway, begun in 1715; of St. Mary Woolnoth, Lombard Street; of St. George's, Bloomsbury; St. Anne's, Limehouse; of Easton Norton House, in Northamptonshire; and of some other works, including a mausoleum at Castle Howard, and repairs of the west front of Westminster Abbey. St. George's, Bloomsbury, is perhaps his finest structure. It has a Corinthian portico, like St. Martin's, and the steeple is surmounted by a statue of George II. "Not any better'n Sergeant Klegg," responded Harry, taking up the gantlet for his favorite. "Long-legged men are very good in their way, but they don't have the brains that shorter men have. Nature don't give no man everything. What she gives to his legs she takes off his head, my dad says." That blow must be delivered, as We have been advised by Our Councillors. It shall be delivered. 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