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公开(公告)号：EP3971135A1
公开(公告)日：2022-03-23
申请号：EP19942869.9
申请日：2019-09-02
发明人： DONG, Chao , ZHAO, Dongke , ZHOU, Yujie , LI, Chaoqun , WEN, Fang , WANG, Wenbo , ZHANG, Hongke , XU, Dan , LI, Chong , SHI, Jie
摘要： Provided in the invention are a catalyst for preparing phosgene and a preparation method therefor, and a method for the preparation of phosgene and the comprehensive utilization of energy thereof. The preparation method comprises the following steps: 1) stirring and soaking activated carbon in a modifying solution, then adding dimethyltin dichloride and chromium oxide powders and carrying out a reaction, and then adding a nickel oxide fine powder and ultrasonically oscillating same to prepare a pre-modified activated carbon; 2) drying the pre-modified activated carbon; and 3) heating and calcinating the dried pre-modified activated carbon from step 2) to prepare the catalyst. Based on the preparation method, thin layers are formed on the surface of the catalyst by bonding chromium tin phosphate and chromium tin silicate with Ni by means of -O-Ni-O-, respectively, which can improve the high-temperature resistance and oxidation resistance of the activated carbon, and improve the safe and stable operation level of a device. The aim of integrated comprehensive utilization of energy is achieved by coupling phosgene production with an evaporation and concentration process of brine and using steam as a heat source for evaporation and concentration of the brine.
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公开(公告)号：EP3974382A1
公开(公告)日：2022-03-30
申请号：EP19943659.3
申请日：2019-09-02
发明人： WEN, Fang , ZHAO, Dongke , WU, Xuefeng , MA, Haiyang , ZHANG, Hongke , ZHAO, Nan , DONG, Chao , CHEN, Liangjin , XU, Dan
IPC分类号： C01B32/80 , B01J27/224 , C02F1/16
摘要： The present disclosure provides a phosgene synthesis and brine evaporation electrolysis integrated treatment process, comprising the following steps: 1) introducing premixed CO and chlorine to a primary phosgene synthesis tower to be synthesized into phosgene, the primary phosgene synthesis tower being provided with a heat transfer agent circulation space, and the heat transfer agent circulating in the heat transfer agent circulation space; 2) introducing the heat transfer agent, which absorbs reaction heat, in the heat transfer agent circulation space to a steam generator, exchanging heat with water to generate superheated steam, and returning the heat-exchanged heat transfer agent to the heat transfer agent circulation space for further absorbing the reaction heat generated by phosgene synthesis; 3) supplying the superheated steam to a brine evaporation concentration device, the brine evaporation concentration device performing evaporation concentration on brine by using the superheated steam as a heat source; and 4) electrolyzing the strong brine or dry salt obtained in step 3) to generate chlorine. The phosgene synthesis and brine evaporation electrolysis integrated treatment process can realize rational utilization of energy and resource utilization of effluent brine.
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3.发明公开
公开(公告)号：EP3450014A1
公开(公告)日：2019-03-06
申请号：EP16911312.3
申请日：2016-08-05
发明人： ZHANG, Hongke , ZHOU, Bo , ZAI, Zhangwei , XU, Dan , YAO, Yu , XU, Yanlong , ZHAO, Dongke , YANG, Jingjing , DING, Jiansheng , HUA, Weiqi
摘要： A catalyst for preparing chlorine gas by hydrogen chloride oxidation, comprising the following components calculated according to mass content based on the total weight of the catalyst: 0.5-20 wt% copper; 2-10 wt% manganese; 0.05-2 wt% boron; 0.01-3 wt% chromium; 0.1-10 wt% rare earth metal; 0.1-10 wt% potassium; and 3-15 wt% titanium; also comprising 0.02-1.1 wt% phosphorus; and 0.03-1.9 wt% iron; the carrier content is 55-90 wt%. In the case of a fluidized bed reactor, the present catalyst can achieve a one-way hydrogen chloride conversion rate of 80 - 85%. Almost all of the 0-1000 mg/kg of chlorinated benzene contained in hydrogen chloride gas can be converted into CO 2 and H 2 O without generating polychlorinated benzene.
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