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1. 发明公开

EP4249095A1 PURIFICATION DEVICE 审中-实审
公开(公告)号：EP4249095A1
公开(公告)日：2023-09-27
申请号：EP21894686.1
申请日：2021-11-17
申请人： Nippon Shokubai Co., Ltd.
发明人： ARAI, Shogo , MUKAE, Masashi , WADA, Hiroki , FUKUMOTO, Toshiya , MATSUDA, Takayuki , SAKAI, Toyofumi
IPC分类号： B01D9/02 , C07C51/43 , C07C57/07 , C07B61/00
摘要： The present invention aims to provide a compound purification apparatus capable of providing a high purity compound in high yield and at low cost. The present invention relates to an apparatus for purifying a compound, the purification apparatus including: a crystallizing unit including a crystal forming section; and a wash column including a mechanism that forcibly transfers crystals, the crystallizing unit including N tanks connected in series, wherein N is 2 or greater, a 1st tank is a most downstream tank, a (N)th tank is a most upstream tank, at least the 1st tank is a crystallization tank including a cooling mechanism, and a 2nd and subsequent tanks are each a crystallization tank or a ripening tank, the purification apparatus including a line that feeds a compound-containing liquid to be purified to at least one of the N tanks, the wash column including: a line that sends a product out; and a line that returns a mother liquor to the crystallizing unit, with the line that returns a mother liquor to the crystallizing unit being connected to at least the (N)th tank, the crystallizing unit including: a line that feeds a slurry from the (N)th tank to the wash column; a line that sends a slurry from a tank among the 1st to (N - 1)th tanks to the next upstream tank; and a line that is provided to each of the 1st to (N - 1)th tanks and that sends thereto a mother liquor withdrawn from an upstream tank, wherein at least one of the lines that send a slurry from a tank among the 1st to (N - 1)th tanks to the next upstream tank is a line that sends a slurry from a tank to the next upstream tank via a solid-liquid separator and that has a line that returns a mother liquor from which crystals are removed in the solid-liquid separator to the tank where the slurry came from, and wherein the line that is provided to each of the 1st to (N - 1)th tanks and that sends thereto a mother liquor withdrawn from an upstream tank is a line that directly sends a mother liquor withdrawn from a tank one upstream or a line that sends a mother liquor withdrawn from a tank one upstream via a solid-liquid separator, the purification apparatus further including a line that sends a mother liquor to the outside of the purification apparatus.

2. 发明公开

EP4349445A1 TANK USED IN REFINING DEVICE 审中-实审
公开(公告)号：EP4349445A1
公开(公告)日：2024-04-10
申请号：EP22816119.6
申请日：2022-05-31
申请人： Nippon Shokubai Co., Ltd.
发明人： FUKUMOTO, Toshiya , TAKEMOTO, Yasutaka , MUKAE, Masashi
IPC分类号： B01D9/02 , C07C51/43 , C07C57/055
摘要： Provided is a method for stably obtaining a product. The present invention relate to a tank for use in a purification apparatus, the tank being: at least one of a crystallization tank that forms a slurry containing crystals of a compound or a ripening tank that is capable of keeping crystals of a compound suspended therein, the tank including a nozzle for feeding a compound-containing solution or a slurry containing crystals of a compound into the tank while the solution or slurry is brought into contact with an inner wall surface of the tank; and a heating mechanism for heating an area of the inner wall surface with which the compound-containing solution or the slurry containing crystals of a compound is to be brought into contact.

3. 发明公开

EP4349444A1 PURIFICATION APPARATUS 审中-实审
公开(公告)号：EP4349444A1
公开(公告)日：2024-04-10
申请号：EP22816118.8
申请日：2022-05-31
申请人： Nippon Shokubai Co., Ltd.
发明人： FUKUMOTO, Toshiya , MUKAE, Masashi , MATSUDA, Takayuki
IPC分类号： B01D9/02 , C07C51/43 , C07C57/055
摘要： Provided is a method for stably obtaining a product. The present invention relates to a purification apparatus for purifying a compound, the purification apparatus including: a tank for use in the purification apparatus; and a hydraulic wash column, the tank being at least one of a crystallization tank that forms a slurry containing crystals of a compound or a ripening tank that is capable of keeping crystals of a compound suspended in the ripening tank, the tank including an agitator having an agitator shaft and a bearing, the purification apparatus further including:
a line for discharging the slurry containing crystals of a compound from the tank and feeding the slurry to the hydraulic wash column; and a line for flowing between the agitator shaft and the bearing in the tank at least one of a mother liquor derived from the slurry fed to the hydraulic wash column, the slurry containing crystals of a compound, or a melt obtained by melting the crystals.

4. 发明公开

EP4349443A1 HEAT EXCHANGER 审中-实审
公开(公告)号：EP4349443A1
公开(公告)日：2024-04-10
申请号：EP22816115.4
申请日：2022-05-31
申请人： Nippon Shokubai Co., Ltd.
发明人： SANO, Itsumi , MUKAE, Masashi , FUKUMOTO, Toshiya
IPC分类号： B01D9/02 , C07C51/43 , C07C57/055
摘要： The present invention provides a method for stably providing a product. The present invention relates to a heat exchanger configured to handle an easily-polymerizable compound-containing solution or an easily-polymerizable compound crystal-containing slurry, the heat exchanger including a scraper for scraping off a substance adhered to an inner wall surface thereof, a shaft connected to the scraper, and a bushing on the shaft, the bushing being to be in contact with the solution or slurry when the heat exchanger is used and being made of an aromatic polyetherketone-containing material.

5. 发明公开

EP4349442A1 TANK USED IN REFINING DEVICE 审中-实审
公开(公告)号：EP4349442A1
公开(公告)日：2024-04-10
申请号：EP22816112.1
申请日：2022-05-31
申请人： Nippon Shokubai Co., Ltd.
发明人： FUKUMOTO, Toshiya , TAKEMOTO, Yasutaka , MUKAE, Masashi
IPC分类号： B01D9/02 , C07C51/43 , C07C57/055 , B01F27/86
摘要： The present invention provides a method for obtaining a high-quality product. The present invention relates to a tank for use in a purification apparatus, the tank being at least one of a crystallization tank that forms a slurry containing crystals of a compound or a ripening tank that is capable of keeping crystals of a compound suspended in the ripening tank, the tank including: an agitator; and a baffle for generating an upward flow from a swirling flow, the tank being capable of forming a supernatant part consisting of a supernatant and a suspension part where the crystals of a compound are suspended.

6. 发明公开

EP4249096A1 METHOD FOR PURIFYING COMPOUND 审中-实审
公开(公告)号：EP4249096A1
公开(公告)日：2023-09-27
申请号：EP21894687.9
申请日：2021-11-17
申请人： Nippon Shokubai Co., Ltd.
发明人： ARAI, Shogo , MUKAE, Masashi , WADA, Hiroki , FUKUMOTO, Toshiya , MATSUDA, Takayuki , SAKAI, Toyofumi
IPC分类号： B01D9/02 , C07C51/43 , C07C57/07 , C07B61/00
摘要： Provided is a method for purifying a compound capable of providing a high purity compound in high yield and at low cost. The present invention relates to the method for purifying a compound using a purification apparatus, the purification apparatus including: a crystallizing unit including a crystal forming section; and a wash column including a mechanism that forcibly transfers crystals. The crystallizing unit includes N tanks connected in series, wherein N is 2 or greater, a 1st tank is a most downstream tank, a (N)th tank is a most upstream tank, at least the 1st tank is a crystallization tank including a cooling mechanism, and a 2nd and subsequent tanks are each a crystallization tank or a ripening tank. The purification apparatus includes a line that feeds a compound-containing liquid to be purified to at least one of the N tanks. The wash column includes a line that sends a product out; and a line that returns a mother liquor to the crystallizing unit, with the line that returns a mother liquor to the crystallizing unit being connected to at least the (N)th tank. The crystallizing unit includes a line that feeds a slurry from the (N)th tank to the wash column; a line that sends a slurry from a tank among the 1st to (N - 1)th tanks to the next upstream tank; and a line that is provided to each of the 1st to (N - 1)th tanks and that sends thereto a mother liquor withdrawn from an upstream tank, wherein at least one of the lines that send a slurry from a tank among the 1st to (N - 1)th tanks to the next upstream tank is a line that sends a slurry from a tank to the next upstream tank via a solid-liquid separator and that has a line that returns a mother liquor from which crystals are removed in the solid-liquid separator to the tank where the slurry came from, and wherein the line that is provided to each of the 1st to (N - 1)th tanks and that sends thereto a mother liquor withdrawn from an upstream tank is a line that directly sends a mother liquor withdrawn from a tank one upstream or a line that sends a mother liquor withdrawn from a tank one upstream via a solid-liquid separator. The purification method includes forming crystals of the compound in the crystallizing unit; discharging at least a portion of a mother liquor to the outside of the purification apparatus; separating a slurry containing the formed crystals into a mother liquor and a slurry having an increased crystal concentration; returning at least a portion of the separated mother liquor to the tank where the slurry came from; mixing a compound-containing liquid to be purified fed to the crystallizing unit with a slurry in the crystallizing unit; sending a slurry in order from any one of the 1st to (N - 1)th tanks to the next upstream tank among the N tanks in the crystallizing unit; and feeding at least a portion of a slurry from the crystallizing unit to the wash column; wherein the compound-containing liquid to be purified has a higher purity than the mother liquor discharged to the outside of the purification apparatus, the slurry fed to the wash column contains a mother liquor having a purity A1 of 80 mol% or higher, and a difference between the purity A1 and a purity A2 of the mother liquor discharged, A1 - A2, is 5 mol% or more.

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