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综述了2023年前三季度我国涂料行业生产、经营简况,包括经济运行增速、涂料原材料采购成本和涂料成品价格双指数情况,并对涂料、颜料行业进出口情况进行了分析。 相似文献
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本文提出了涂料缓蚀剂的概念,介绍了两种涂料缓蚀剂的特点、作用、应用情况,并提出应用涂料缓蚀剂对涂料涂装业的积极意义,最后指出了涂料缓蚀剂的应用与施工工艺的密切关系。 相似文献
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概述了国内近年来涂料生产情况,并分类对涂料的进出口情况作了分析,根据涂料产业结构及消费结构的变化,对国内外涂料工业今后的发展趋势作了预测。 相似文献
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通过对小波变换、可变模态分解(VMD)、经验模态分解(EMD)及BP神经网络等多种算法在天然气管道中应用的学习研究,提出一种基于VMD-BP神经网络的天然气管道工况判断模型。首先对管道信号进行可变模态分解,再将分解后的特征信号通过BP神经网络算法进行网络训练测试,进而对管道工况做出判断。 相似文献
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长输管道是当前天然气运输的唯一渠道,因此管道的安全性、防腐程度直接关联到燃气运输工作是否能顺利、稳定开展。因此,加强对天然气管道的腐化预防工作是日常工作的核心关注问题。对天然气管道的腐蚀原因进行了阐述,结合现有技术对管道防腐措施、维护工作提供相关应对策略。 相似文献
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During the development and application of natural gas, hydrate plugging the pipelines is a very important issue to solve. Currently, adding thermodynamic hydrate inhibitors (THIs) and kinetic hydrate inhibitors (KHIs) in gas-dominated pipelines is a main way to prevent hydrate plugging of flow lines. This paper mainly reviews the efforts to develop THIs and KHIs in the past 20 years, compare the role of various THIs, such as methanol, ethylene glycol and electrolyte, and give the tips in using. The direction of KHIs is toward high efficiency, low toxicity, low pollution and low cost. More than a hundred inhibitors, including polymers, natural products and ionic liquids, have been synthesized in the past decade. Some of them have better performance than the current commercial KHIs. However, there are still few problems, such as the complex synthesis process, high cost and low solubility, impeding the commercialization of these inhibitors. The review also summarized some application of KHIs in China. Research of KHIs in China began late. There are no KHIs used in gas pipelines. Only a few field tests have been carried out. In the end of this paper, the field test of self-developed KHIs by China is summarized, and the guidance is given according to the application results. 相似文献
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