KR840001436A - Method for preparing urea granules - Google Patents

Method for preparing urea granules Download PDF

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Publication number
KR840001436A
KR840001436A KR1019820004123A KR820004123A KR840001436A KR 840001436 A KR840001436 A KR 840001436A KR 1019820004123 A KR1019820004123 A KR 1019820004123A KR 820004123 A KR820004123 A KR 820004123A KR 840001436 A KR840001436 A KR 840001436A
Authority
KR
South Korea
Prior art keywords
granules
granule
pan
nucleus
granulation
Prior art date
Application number
KR1019820004123A
Other languages
Korean (ko)
Inventor
헬레뵈 라이프 (외 2)
Original Assignee
핀 외르스타비크
노르스크 히드로 아. 에스.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 핀 외르스타비크, 노르스크 히드로 아. 에스. filed Critical 핀 외르스타비크
Publication of KR840001436A publication Critical patent/KR840001436A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Fertilizers (AREA)
  • Glanulating (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

내용 없음No content

Description

우레아 과립의 제조방법Method for preparing urea granules

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

제1도는 1단계 공정에 대한 작업 계통도(flow sheet)이다.1 is a flow sheet for a one step process.

제2도는 2단계 공정에 대한 작업 계통도(flow sheet)이다.2 is a flow sheet for a two step process.

Claims (5)

첨가제를 함유할 수 있는, 수분을 조금 함유하거나 융해된 따뜻한 우레아 용액을, 경사 회전팬에 놓인 냉각고체에 씌워 굳혀서 큰 과립을 제조하는데 있어, 고체는 대부분의 재 순환된 것이고 소량이 잘 분리된 과립핵이고, 여기에 따뜻한 액체를 부어 과립이 크게 되고, 팬에서 나온 과립은 체로 분리되어 적당한 제품 크기인 것과 그보다 작은 것, 큰 것으로 분리되고, 그 중 앞의 두가지는 재순환되어 다시 액체를 씌우고, 팬에서 나오는 과립과 과립핵의 평균 직경비가 3보다 작게 유지되는 것을 특징으로 하는 공정.In the manufacture of large granules, a small moisture-containing or molten warm urea solution, which may contain additives, is placed on a cooling solid placed in an inclined rotary fan to produce large granules, the solid being mostly recirculated and a small amount of well separated granules. The core is poured into a warm liquid, which makes the granules large, and the granules from the pan are separated by a sieve and separated into the appropriate product size and smaller and larger ones, the first two being recycled and refilled with the pan, The process characterized in that the average diameter ratio of the granules and granule nuclei from the outside is kept less than three. 제1항에 있어서, 과립핵과 재순환 입자를 각각 다른 저장고에 두는 것과, 팬에서 나오는 과립과 과립핵의 평균직경비가 2 이하인 것을 특징으로 하는 공정.The process according to claim 1, wherein the granule nuclei and the recycle particles are placed in different reservoirs, and the average diameter ratio of the granules and granule nuclei coming out of the pan is 2 or less. 제1, 2항에 있어서, 재순환 입자와 과립핵 사이의 무게비가 50 : 1에서 5 : 1로 유지되는 것을 특징으로 하는 공정.The process according to claim 1 or 2, characterized in that the weight ratio between the recycle particles and the granule nucleus is maintained from 50: 1 to 5: 1. 제1, 2, 3항에 있어서, 과립을 만드는 것이 2단계로서, 각 단계는 팬, 재순환 과립용 저장고, 과립핵 저장고, 냉각베드(bed)와 체(sieving device)로 구성되고, 제1단계의 제품이 제2단계의 과립핵으로 쓰이고 제1단계의 과립핵은 크기가 큰 입자를 분쇄하고 체로쳐서 만들어진다는 것을 특징으로 하는 공정.The method according to claim 1, 2, 3, wherein granulation is made in two steps, each step consisting of a pan, a recycling granulation reservoir, a granulation nucleus reservoir, a cooling bed and a sieving device, and the first step. The product is used as a granule nucleus of the second stage and the granule nucleus of the first stage is made by crushing and sieving the large particles. ※참고사항: 최초출원 내용에 의하여 공개하는 것임.※ Note: This is to be disclosed based on the initial application.
KR1019820004123A 1981-09-11 1982-09-11 Method for preparing urea granules KR840001436A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO813091 1981-09-11
NO813091A NO150038C (en) 1981-09-11 1981-09-11 UNREBASED GRANULES AND PROCEDURES FOR THE PREPARATION OF SUCH GRANULES

Publications (1)

Publication Number Publication Date
KR840001436A true KR840001436A (en) 1984-05-07

Family

ID=19886218

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019820004123A KR840001436A (en) 1981-09-11 1982-09-11 Method for preparing urea granules

Country Status (6)

Country Link
JP (1) JPS5861828A (en)
KR (1) KR840001436A (en)
BG (1) BG50723A3 (en)
NO (1) NO150038C (en)
PH (1) PH17938A (en)
RO (1) RO85786B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002037689A (en) * 2000-07-24 2002-02-06 Chisso Corp Coated covering granular fertilizer
JP2012046382A (en) * 2010-08-27 2012-03-08 Sumitomo Chemical Co Ltd Method for producing resin-coated granular fertilizer

Also Published As

Publication number Publication date
JPH0359037B2 (en) 1991-09-09
JPS5861828A (en) 1983-04-13
NO150038B (en) 1984-04-30
NO150038C (en) 1984-08-08
BG50723A3 (en) 1992-10-15
NO813091L (en) 1983-03-14
RO85786A (en) 1984-11-25
PH17938A (en) 1985-02-11
RO85786B (en) 1984-11-30

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