RU96119918A - METHOD FOR SEPARATION OF IMPURITIES FROM HOT MIXTURE OF SYNTHESIS GASES WHEN PRODUCING MELAMINE - Google Patents

METHOD FOR SEPARATION OF IMPURITIES FROM HOT MIXTURE OF SYNTHESIS GASES WHEN PRODUCING MELAMINE

Info

Publication number
RU96119918A
RU96119918A RU96119918/04A RU96119918A RU96119918A RU 96119918 A RU96119918 A RU 96119918A RU 96119918/04 A RU96119918/04 A RU 96119918/04A RU 96119918 A RU96119918 A RU 96119918A RU 96119918 A RU96119918 A RU 96119918A
Authority
RU
Russia
Prior art keywords
impurities
separation
hot mixture
synthesis gases
producing melamine
Prior art date
Application number
RU96119918/04A
Other languages
Russian (ru)
Other versions
RU2127728C1 (en
Inventor
Герардус Теодорус Ван Вейк Юлиус
Герардус Мария Ван Де Мусдейк Корнелис
Йозеф Гислайн Тулен Йохан
Original Assignee
Дсм Н.В.
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
Priority claimed from BE9400281A external-priority patent/BE1008133A3/en
Application filed by Дсм Н.В. filed Critical Дсм Н.В.
Publication of RU96119918A publication Critical patent/RU96119918A/en
Application granted granted Critical
Publication of RU2127728C1 publication Critical patent/RU2127728C1/en

Links

Claims (5)

1. Способ отделения примесей от горячей смеси синтез-газов, полученной при производстве меламина из мочевины, отличающийся тем, что используют фильтры, включающие по меньшей мере один элемент, выбранный из группы, состоящей из спекшихся, по существу, чистых хрома, молибдена и вольфрама.1. The method of separating impurities from a hot mixture of synthesis gases obtained in the production of melamine from urea, characterized in that they use filters comprising at least one element selected from the group consisting of sintered, essentially pure chromium, molybdenum and tungsten . 2. Способ по п. 1, отличающийся тем, что фильтры состоят из спекшегося, по существу, чистого хрома. 2. The method according to p. 1, characterized in that the filters consist of sintered, essentially pure chromium. 3. Способ по п. 2, отличающийся тем, что содержание хрома составляет по меньшей мере около 99 мас.%. 3. The method according to p. 2, characterized in that the chromium content is at least about 99 wt.%. 4. Способ по п. 2, отличающийся тем, что содержание хрома составляет по меньшей мере около 99,8 мас.%. 4. The method according to p. 2, characterized in that the chromium content is at least about 99.8 wt.%. 5. Способ по п. 1, отличающийся тем, что фильтры включают фильтрационные свечи. 5. The method according to p. 1, characterized in that the filters include filter candles.
RU96119918A 1994-03-15 1995-03-07 Process for preparing melamine from urea RU2127728C1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BE9400281 1994-03-15
BE9400281A BE1008133A3 (en) 1994-03-15 1994-03-15 Process for pollution of the separation of a hot synthesis gas mixture in the preparation melamine.
PCT/NL1995/000086 WO1995025098A1 (en) 1994-03-15 1995-03-07 Method for the separation of impurities from a hot synthesis gas mixture in the preparation of melamine

Publications (2)

Publication Number Publication Date
RU96119918A true RU96119918A (en) 1999-01-10
RU2127728C1 RU2127728C1 (en) 1999-03-20

Family

ID=3888036

Family Applications (1)

Application Number Title Priority Date Filing Date
RU96119918A RU2127728C1 (en) 1994-03-15 1995-03-07 Process for preparing melamine from urea

Country Status (16)

Country Link
US (1) US5716429A (en)
EP (1) EP0750615B1 (en)
JP (1) JPH09510230A (en)
CN (1) CN1061979C (en)
AT (1) ATE173473T1 (en)
AU (1) AU683729B2 (en)
BE (1) BE1008133A3 (en)
CA (1) CA2185557A1 (en)
DE (1) DE69506090T2 (en)
FI (1) FI963620A (en)
IL (1) IL112984A (en)
NO (1) NO306462B1 (en)
NZ (1) NZ281340A (en)
PL (1) PL177598B1 (en)
RU (1) RU2127728C1 (en)
WO (1) WO1995025098A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT1322U1 (en) * 1996-09-10 1997-03-25 Plansee Ag FILTER ELEMENT
US6200367B1 (en) * 1997-11-07 2001-03-13 Terrance D. Phillips Water washable stainless steel HEPA filter
GB9919127D0 (en) * 1999-08-13 1999-10-13 Avecia Ltd Filter
JP2007517818A (en) * 2004-01-17 2007-07-05 カサーレ ケミカルズ エス．エー． Method for producing catalytic melamine to improve melamine yield
CN110871109B (en) * 2018-08-30 2022-09-27 南京理工大学 Melamine resorcinol formaldehyde polymer modified graphite phase carbon nitride catalyst, preparation method and application thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768144A (en) * 1953-06-26 1956-10-23 Kellogg M W Co Corrosion-resistant filters
GB1051923A (en) * 1964-08-19 1900-01-01
ES344834A1 (en) * 1966-09-16 1968-11-01 Toyo Koatsu Ind Inc Process for the production of Urea
NL8304381A (en) * 1983-12-21 1985-07-16 Stamicarbon METHOD AND APPARATUS FOR PREPARING MELAMINE
US4758272A (en) * 1987-05-27 1988-07-19 Corning Glass Works Porous metal bodies
DE3818281A1 (en) * 1988-03-10 1989-09-21 Schwaebische Huettenwerke Gmbh EXHAUST FILTER
US5497620A (en) * 1988-04-08 1996-03-12 Stobbe; Per Method of filtering particles from a flue gas, a flue gas filter means and a vehicle
JP2724617B2 (en) * 1988-07-07 1998-03-09 東海カーボン株式会社 Porous metal material
JP3265737B2 (en) * 1993-08-20 2002-03-18 住友電気工業株式会社 High corrosion resistant metal filter

Similar Documents

Publication Publication Date Title
CA2100255A1 (en) Back flushable filtration device and method of forming and using same
RU96119918A (en) METHOD FOR SEPARATION OF IMPURITIES FROM HOT MIXTURE OF SYNTHESIS GASES WHEN PRODUCING MELAMINE
ATE177414T1 (en) CLEANED NATURAL GLASS PRODUCT
ES2002146A6 (en) Process for the purification of oils.
FI933161A (en) FRAMEWORK FOR FRAMING REQUIREMENTS
FI963620A0 (en) Method for separating impurities from a hot synthesis gas mixture in the manufacture of melamine
RU93005167A (en) METHOD FOR PROCESSING GAS FLOW WHEN PRODUCING MELAMINE FROM UREA
JPH01224023A (en) Filter element for collecting dust
GB1263207A (en) A filter insert
DE69704032D1 (en) FILTER BAG WITH HIGH RETENTION CAPACITY
TH20607A (en) Method for Separate impurities from hot synthetic gas mixtures in melamine preparation.
SU639574A1 (en) Filtering element
RU93050386A (en) METHOD FOR PRODUCING POROUS FILTERING ELEMENTS
RU2086635C1 (en) Method for vodka purification
CA2292945A1 (en) Acid gas solvent filtration system
KR960020831A (en) Manufacturing method of acetate tow for tobacco filter
KR880007122A (en) Method for preparing natural zeolite adsorbent for separating carbon dioxide in mixed gas
RU96101385A (en) METHOD FOR REGENERATING WASTE OIL OILS
Bruenger Filtering separators--development and application as hot gas filters
KR950702865A (en) Process for producing small particles from dissolution product
RU93050387A (en) METHOD FOR PRODUCING POROUS FILTERING ELEMENTS
RU95110069A (en) MIXTURE FOR WALLASTONITE SYNTHESIS
KR960033510A (en) Manufacturing method of filter with water purification function
RU93032756A (en) AIR CLEANING FILTER
Romero et al. Improvements in overall performance of security filtration area