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1. 发明公开

EP3971135A1 CATALYST FOR PREPARING PHOSGENE AND PREPARATION METHOD THEREFOR, AND METHOD FOR PREPARATION OF PHOSGENE AND COMPREHENSIVE UTILIZATION OF ENERGY THEREOF 审中-实审
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
申请人： Wanhua Chemical (Ningbo) Co., Ltd. , Wanhua Chemical Group Co., Ltd.
发明人： DONG, Chao , ZHAO, Dongke , ZHOU, Yujie , LI, Chaoqun , WEN, Fang , WANG, Wenbo , ZHANG, Hongke , XU, Dan , LI, Chong , SHI, Jie
IPC分类号： C01B32/80 , B01J27/22
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.

2. 发明公开

EP3974382A1 PHOSGENE SYNTHESIS AND BRINE EVAPORATION ELECTROLYSIS INTEGRATED TREATMENT PROCESS 审中-实审
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
申请人： Wanhua Chemical Group Co., Ltd. , Wanhua Chemical (Ningbo) Co., Ltd.
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.

3. 发明授权

EP3243563B1 METHOD FOR REPLACEMENT OF PHOSGENE SYNTHESIS COLUMN CATALYST 有权
公开(公告)号：EP3243563B1
公开(公告)日：2019-12-18
申请号：EP15876495.1
申请日：2015-01-16
申请人： Wanhua Chemical Group Co., Ltd.
发明人： ZHANG, Hongke , YAO, Yu , ZHAO, Dongke , CAO, Guanyi , LIU, Xiaogao , CAO, Younian , LI, Chong , MA, Yabo
IPC分类号： B01J8/02 , B01J8/06 , B01J27/20 , B01J8/00 , C01B32/80 , C07C273/02

4. 发明公开

EP3450014A1 CATALYST FOR PREPARING CHLORINE BY HYDROGEN CHLORIDE OXIDATION, AND PREPARATION METHOD AND APPLICATION THEREOF 有权
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
申请人： Wanhua Chemical Group Co., Ltd.
发明人： ZHANG, Hongke , ZHOU, Bo , ZAI, Zhangwei , XU, Dan , YAO, Yu , XU, Yanlong , ZHAO, Dongke , YANG, Jingjing , DING, Jiansheng , HUA, Weiqi
IPC分类号： B01J23/83 , B01J37/02 , C01B7/04
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.

5. 发明公开

EP3243563A1 METHOD FOR REPLACEMENT OF PHOSGENE SYNTHESIS COLUMN CATALYST 有权
标题翻译：磷合成柱催化剂替代方法
公开(公告)号：EP3243563A1
公开(公告)日：2017-11-15
申请号：EP15876495.1
申请日：2015-01-16
申请人： Wanhua Chemical Group Co., Ltd.
发明人： ZHANG, Hongke , YAO, Yu , ZHAO, Dongke , CAO, Guanyi , LIU, Xiaogao , CAO, Younian , LI, Chong , MA, Yabo
IPC分类号： B01J8/06
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.
摘要翻译：本发明公开了一种在光气合成塔中的催化剂被更换时，从光气合成塔中的催化剂快速解吸光气的方法。该方法首先用氮气从光气合成塔中的催化剂活性炭中清除容易脱附的光气，然后用氨气吹扫，并使氨气与催化剂中的难解吸的光气在光气合成塔。然后用水枪冲洗光气合成塔，然后用热气干燥。净化后光气合成塔出口处的光气含量低于0.5ppm，可大大节省光气合成塔净化光气的时间，大大减少氮气消耗量，提高工艺安全性操作。

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