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1.发明申请CATALYST FOR PREPARING PHOSGENE AND METHOD FOR PREPARING PHOSGENE USING THE SAME 有权用于制备荧光体的催化剂和使用其制备荧光体的方法公开(公告)号：US20160137511A1
公开(公告)日：2016-05-19
申请号：US14904138
申请日：2014-02-11
发明人： Bin CHEN , Wuxi LUO , Yu YAO , Liangfeng SHAO , Lei WANG , Hongke ZHANG , Weiqi HUA
CPC分类号： C01B31/28 , B01J21/18 , B01J23/04 , B01J27/10 , B01J27/224 , B01J31/06 , B01J35/0006 , B01J35/023 , B01J35/04 , B01J37/0219 , B01J37/0236 , B01J37/08 , B01J37/084 , B01J37/24 , C01B32/80
摘要： The present invention relates to a catalyst for preparing phosgene and a method for preparing phosgene using the catalyst. Said method comprises: modifying the surface of an activated carbon coating/foamed silicon carbide structural catalyst using an alkali metal salt; filling the catalysts having different thickness of the activated carbon coating and different amount of the alkali metal salt in different sections in the axial direction of the multi-tubular reactor of the fixed bed, and preparing phosgene using Cl2 and CO. The radial and axial temperature difference of the catalyst bed is lowered by using the alkali metal salt-modified activated carbon coating/foamed silicon carbide structural catalyst and by segmental filling, so that high temperature of tube wall is obtained in the case of a larger tube diameter, and high quality of steam is obtained stably.
摘要翻译： 本发明涉及一种用于制备光气的催化剂和一种使用该催化剂制备光气的方法。 所述方法包括：使用碱金属盐改性活性炭涂层/泡沫碳化硅结构催化剂的表面; 在固定床的多管式反应器的轴向不同部分中填充不同厚度的活性炭涂层和不同量的碱金属盐的催化剂，并使用Cl2和CO制备光气，径向和轴向温度 通过使用碱金属盐改性的活性炭涂层/发泡碳化硅结构催化剂和通过分段填充来降低催化剂床的差异，使得在管径较大的情况下获得管壁的高温，并且质量高 的蒸汽得到稳定。
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公开(公告)号：US20170348661A1
公开(公告)日：2017-12-07
申请号：US15536425
申请日：2015-01-16
发明人： Hongke ZHANG , Yu YAO , Dongke ZHAO , Guanyi CAO , Xiaogao LIU , Younian CAO , Chong LI , Yabo MA
CPC分类号： B01J8/06 , B01J8/008 , B01J8/0278 , B01J8/0292 , B01J27/20 , B01J2208/06 , C01B32/80 , C07C273/02
摘要： The present invention discloses a method of quickly desorbing phosgene from a catalyst in a phosgene synthesizing tower when the catalyst in the phosgene synthesizing tower is replaced. The method is carried out by first purging out easily-desorbed phosgene from the catalyst activated carbon in the phosgene synthesizing tower with nitrogen gas, then purging with ammonia gas, and the ammonia gas is reacted with the hardly-desorbed phosgene in the catalyst of the phosgene synthesizing tower. Then the phosgene synthesizing tower is rinsed with a water gun and then dried with hot gas. The phosgene content at an outlet of the phosgene synthesizing tower after purging is below 0.5 ppm, which can significantly save the time of the phosgene synthesizing tower for purging the phosgene, greatly reduce the amount of nitrogen gas consumed, and improve the safety of the process operation.
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