[특허]Nitration process

Nitration process 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C07C-201/00 B01D-003/00
출원번호	US-0135569 (1993-10-14)
발명자 / 주소	Guenkel Alfred A. (Vancouver CAX) Rae John M. (Vancouver CAX) Hauptmann Edward G. (West Vancouver CAX)
출원인 / 주소	NRM International Technologies C.V. (Utrecht NLX 03)
인용정보	피인용 횟수 : 58 인용 특허 : 0

초록 ▼

A continuous process to nitrate a nitratable aromatic compound in a nitronium ion solution in a nitrator. The process comprises feeding into the nitrator nitronium ion solution of a composition within an area defined by connecting three points in a ternary phase diagram of nitric acid, sulfuric acid and water. The three points correspond to first about 82% of sulfuric acid and 18% nitric acid, secondly about 55% sulfuric acid and about 45% water and, thirdly, 100% sulfuric acid, with the nitric acid preferably being below about 3%. The nitratable aromatic compound is introduced in a manner such that a fine emulsion of hydrocarbon in the nitronium ion solution is formed with the hydrocarbon evenly distributed in the acid phase. The acid and the nitratable aromatic compound are brought into intimate contact in a plug-flow nitrator that contains mixing elements.

대표청구항 ▼

A continuous atmospheric process to nitrate a nitratable aromatic compound in a nitronium ion solution in a nitrator, the process comprising: (a) introducing into the nitrator a nitronium ion solution of a composition that contains nitric acid, water and sulfuric acid, and lies within an area defined by three points A, B and C of a ternary phase diagram of nitric acid, sulfuric acid and water where - A. corresponds to about 82% of sulfuric acid and 18% nitric acid; B. corresponds to about 55% sulfuric acid and 45% water; and C. corresponds to 100% sulfuric acid; said composition being selected so that nitric acid is present below about 3% and is substantially fully dissociated to nitronium ion and the sulfuric acid strength is sufficiently high to permit a temperature at the inlet of the nitrator of from about 97°to 120°C.; (b) allowing the nitratable aromatic compound to commingle with the nitronium ion solution so as to provide a fine emulsion of said aromatic compound within the nitronium ion solution with the aromatic compound being evenly distributed in the nitronium ion solution; (c) causing the nitronium ion solution containing said nitratable aromatic compound to react at a temperature at the inlet of the nitrator of from about 97°to 120°C. in a nitrator containing mixing elements able to achieve and to maintain mixing of the contents of the nitrator to nitrate the nitratable compound to provide an aromatic nitro compound containing only low levels of impurities.

이 특허를 인용한 특허 (58)

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Pennemann, Bernd; Munnig, Juergen; Dietrich, Wulf; Rausch, Andreas Karl, Method and system for producing nitrobenzene.
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Knauf, Thomas; Racoes, Alexandre; Dohmen, Wolfgang; Mairata, Antoni, Method for producing nitrobenzene by adiabatic nitriding.
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Knauf, Thomas; Racoes, Alexandre; Rausch, Andreas Karl; Wulf, Dietrich, Method for producing nitrobenzene by adiabatic nitriding.
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Knauf, Thomas; Munnig, Jurgen; Schmiedler, Joerg, Method for the continuous production of nitrobenzene.
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Hermann Heinrich,DEX ; Gebauer Jurgen,DEX, Process for the nitration of aromatic compounds.
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Mairata, Antoni; Knauf, Thomas, Process for the preparation of nitrobenzene by adiabatic nitration.
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Rausch, Andreas; Knauf, Thomas; Bolton, Jeffrey; Racoes, Alexandre, Process for the preparation of nitrobenzene by adiabatic nitration.
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Link, Darren R.; Weiner, Michael; Marran, David; Rothberg, Jonathan M., Selection of compartmentalized screening method.
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Hassan, Abbas; Bagherzadeh, Ebrahim; Anthony, Rayford G.; Borsinger, Gregory G.; Hassan, Aziz, System and process for production of nitrobenzene.
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Link, Darren R., Systems for handling microfludic droplets.
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Gillis,Paul A.; Braun,Helge; Schmidt,Joerg; Verwijs,Jan Willem; Velten,Harald; Platkowski,Kristina, Tubular reactor having static mixing elements separated by coalescing zones.
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A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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