KR910009561A - Method for preparing ammonium sulfate macroparticle - Google Patents

Method for preparing ammonium sulfate macroparticle Download PDF

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Publication number
KR910009561A
KR910009561A KR1019900017959A KR900017959A KR910009561A KR 910009561 A KR910009561 A KR 910009561A KR 1019900017959 A KR1019900017959 A KR 1019900017959A KR 900017959 A KR900017959 A KR 900017959A KR 910009561 A KR910009561 A KR 910009561A
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KR
South Korea
Prior art keywords
slurry
ammonium sulfate
ammonium
vessel
ammonium sulphate
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KR1019900017959A
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Korean (ko)
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KR0152084B1 (en
Inventor
노보루 이와아사
다쓰히코 스지야마
쓰토무 무라오사
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시미즈 야스오
우베 고산 가부시키가이샤
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Publication of KR910009561A publication Critical patent/KR910009561A/en
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00Sulfur; Compounds thereof
    • C01B17/96Methods for the preparation of sulfates in general
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C303/00Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides

Abstract

내용 없음No content

Description

암모늄 설페이트 거대 입자의 제조방법Method for preparing ammonium sulfate macroparticle

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 따른 암모늄 설페이트 거대입자의 제조 공정을 수행하기 위한 단계를 나타내는 흐름도이다.1 is a flow chart showing the steps for carrying out the process for producing an ammonium sulfate macroparticle according to the present invention.

Claims (2)

락탐 제조시의 부산물인 암모늄 설페이트 용액을 암모늄 설페이트 결정화 용기에 공급하여 그안에서 농축에 의하여 침착시키고 이어서 결정화된 암모늄 설페이트를 함유하는 슬러리(기저액)를 암모늄 설페이트 결정화 용기의 기저부로부터 취출시킨후에 암모늄 설페이트 결정을 분리장치에 의하여 슬러리로부터 회수하며, 암모늄 설페이트 결정화 용기에 이 용기중의 슬러리를 교반하기 위한 적어도 하나의 교반기, 교반기의 전류치를 측정하기 위한 전류계, 슬러리의 슬러리 농도를 측정하기 위한 농도계 및 슬러리내의 암모늄 설페이트 결정의 함량을 측정하기 위한 액정 계면 측정기가 장착되어 있고, 전술한 암모늄 설페이트 결정화 용기내 적어도 전술한 교반기의 전류치에서 슬러리내 암모늄 설페이트의 잉여 결정핵의 생성을 억제시키면서 용기내 암모늄 설페이트 소형 입자의 체류시간을 연장시킨 결과로서 암모늄 설페이트 결정이 최대 직경의 입자로 성장하는 시간대에서 용기내 결정의 잔류량으로 간주되는 슬러리내 암모늄 설페이트 결정 함량의 상한선 및 다른 한편으로는 암모늄 설페이트의 새로운 결정핵이 과포화 상태에 도달한 슬러리로부터 이상적으로 생성되기 직전에 용기내 결정의 잔류량으로 간주되는 하한선으로 슬러리의 슬러리 농도, 슬러리내 암모늄 설페이트 결정의 함량 및 기저부로부터 취출되는 슬러리내 암모늄 설페이트 결정이 입자 크기 분포를 모니터링 함으로써 용기내에 잔류하는 암모늄 설페이트 결정의 양이 용기내 암모늄 설페이트 결정함량의 전술한 상한선 내지 하한선 범위내에서 반복적으로 증가되거나 감소되도록 용기의 기저부로부터 취출되는 슬러리 양을 증가시키거나 감소시킴을 특징으로 하는, 암모늄셀페이트 거대입자의 제조 방법.The ammonium sulphate solution, a by-product of the production of lactams, was fed to an ammonium sulphate crystallization vessel, deposited by concentration therein, and then the slurry containing the crystallized ammonium sulphate (base liquid) was withdrawn from the base of the ammonium sulphate crystallization vessel, followed by ammonium sulphate. The crystals are recovered from the slurry by a separator, at least one stirrer for stirring the slurry in the vessel in an ammonium sulphate crystallization vessel, an ammeter for measuring the current value of the stirrer, a densitometer for measuring the slurry concentration of the slurry and a slurry It is equipped with a liquid crystal interface measuring device for measuring the content of ammonium sulfate crystals in the solvent, while suppressing the formation of excess crystal nuclei of ammonium sulfate in the slurry at the current value of at least the above-mentioned stirrer in the above-mentioned ammonium sulfate crystallization vessel. The upper limit of the ammonium sulphate crystal content in the slurry, which is regarded as the residual amount of crystals in the vessel at the time when the ammonium sulphate crystal grows to the largest diameter particles, as a result of prolonging the residence time of the ammonium sulphate small particles, and on the other hand The lower limit, which is considered to be the residual amount of crystals in a container immediately before new nuclei are ideally produced from a slurry reaching the supersaturation state, is the slurry concentration of the slurry, the content of ammonium sulfate crystals in the slurry, and the ammonium sulfate crystals in the slurry taken out from the base. By monitoring the particle size distribution, the slurry is withdrawn from the base of the vessel such that the amount of ammonium sulfate crystals remaining in the vessel is repeatedly increased or decreased within the aforementioned upper and lower limits of the ammonium sulfate crystal content in the vessel. A method for producing ammonium sulphate macroparticles, characterized in that the amount is increased or decreased. 제1항에 있어서, 암모늄 설페이트 결정화 용기의 기저부로부터 취출된 암모늄 설페이트 결정 거대입자 및 암모늄 설페이트 결정 소형입자를 분리장치로 각각 분리시키고, 이에 따라 결정의 추가 성장이 유도되도록 암모늄 설페이트 결정 소형입자를 분리한 모액과 함께 암모늄 설페이트 결정화 용기에 되돌려보내면서 암모늄 설페이트 결정 거대입자를 회수하는 방법.The ammonium sulfate crystal microparticles according to claim 1, wherein the ammonium sulfate crystal microparticles and ammonium sulfate crystal microparticles withdrawn from the base of the ammonium sulfate crystallization vessel are separated by a separator, thereby separating the ammonium sulfate crystal microparticles to induce further growth of the crystals. A method for recovering ammonium sulphate crystal macroparticles while returning to the ammonium sulphate crystallization vessel with a mother liquor. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019900017959A 1989-11-07 1990-11-07 Process for preparation of large grain ammonium sulfate KR0152084B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1287785A JPH0764553B2 (en) 1989-11-07 1989-11-07 Manufacturing method of large ammonium sulfate
JP2877851989 1989-11-07
JP287785/1989 1989-11-07

Publications (2)

Publication Number Publication Date
KR910009561A true KR910009561A (en) 1991-06-28
KR0152084B1 KR0152084B1 (en) 1998-10-15

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Application Number Title Priority Date Filing Date
KR1019900017959A KR0152084B1 (en) 1989-11-07 1990-11-07 Process for preparation of large grain ammonium sulfate

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JP (1) JPH0764553B2 (en)
KR (1) KR0152084B1 (en)
CN (1) CN1031561C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100915062B1 (en) * 2002-04-02 2009-09-02 코니카 미놀타 홀딩스 가부시키가이샤 Producing method of image pickup device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101522276B (en) * 2006-07-28 2013-08-14 帝斯曼知识产权资产管理有限公司 Process for continuous production of large crystal products
WO2014040858A1 (en) 2012-09-11 2014-03-20 Dsm Ip Assets B.V. Process for initiating an ammonium sulfate crystallization process
CN102897795B (en) * 2012-11-12 2015-02-25 中国石油化工股份有限公司 Production method of large granular ammonium sulfate crystal
CN103739312A (en) * 2013-12-19 2014-04-23 瓮福(集团)有限责任公司 Production method for improving nitrogen of granular ammonium sulfate
CN110759752A (en) * 2019-11-07 2020-02-07 李文娟 Process for preparing granular ammonium sulfate
CN111408157B (en) * 2020-04-14 2021-09-14 中石化南京工程有限公司 Ammonium sulfate crystallization method and device thereof
CN111530119B (en) * 2020-04-14 2021-09-14 中石化南京工程有限公司 Tandem ammonium sulfate crystallization method and device thereof
CN115520879B (en) * 2021-06-24 2024-03-26 中国石油化工股份有限公司 Method and device for continuously preparing granular ammonium sulfate by heterogeneous seed crystal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100915062B1 (en) * 2002-04-02 2009-09-02 코니카 미놀타 홀딩스 가부시키가이샤 Producing method of image pickup device

Also Published As

Publication number Publication date
CN1051711A (en) 1991-05-29
JPH0764553B2 (en) 1995-07-12
KR0152084B1 (en) 1998-10-15
JPH03150217A (en) 1991-06-26
CN1031561C (en) 1996-04-17

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