Patent AT-E400549-T1: [Translated] METHOD FOR INHIBITING POLYMERIZATION DURING RECOVERY AND PURIFICATION OF UNSATURATED MONONITRILS
Economical processes are disclosed for recovery and refining of valuable nitrogen-containing organic compounds formed by catalytic oxidation of least one feed compound selected from the group consisting of propane, propylene, isobutane and isobutylene in the presence of ammonia to produce a gaseous. Processes of the invention include quenching the gaseous reactor effluent with an aqueous quench liquid; forming an aqueous solution comprising the corresponding unsaturated mononitrile, hydrogen cyanide and other organic co-products; and using an integrated sequence of distillations and phase separations to recover for recycle of a useful aqueous liquid, and obtain the desired nitrogen-containing products. According to the invention aqueous solutions are fractionated in an integrated system of multi-stage columns while an effective polymerization inhibiting amount of at least one member of a preselected class of p-phenylenediamine compounds is maintained therein.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[
"009:25"
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"fn": "NIH/NCBI Data Team",
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| description | Economical processes are disclosed for recovery and refining of valuable nitrogen-containing organic compounds formed by catalytic oxidation of least one feed compound selected from the group consisting of propane, propylene, isobutane and isobutylene in the presence of ammonia to produce a gaseous. Processes of the invention include quenching the gaseous reactor effluent with an aqueous quench liquid; forming an aqueous solution comprising the corresponding unsaturated mononitrile, hydrogen cyanide and other organic co-products; and using an integrated sequence of distillations and phase separations to recover for recycle of a useful aqueous liquid, and obtain the desired nitrogen-containing products. According to the invention aqueous solutions are fractionated in an integrated system of multi-stage columns while an effective polymerization inhibiting amount of at least one member of a preselected class of p-phenylenediamine compounds is maintained therein. |
| distribution |
[
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|
| identifier | https://healthdata.gov/api/views/bqu2-efi2 |
| issued | 2025-09-05 |
| keyword |
[
"chemistry",
"innovation",
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"research"
]
|
| landingPage | https://healthdata.gov/d/bqu2-efi2 |
| modified | 2025-09-06 |
| programCode |
[
"009:066"
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|
| publisher |
{
"name": "National Center for Biotechnology Information (NCBI)",
"@type": "org:Organization"
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|
| theme |
[
"NIH"
]
|
| title | Patent AT-E400549-T1: [Translated] METHOD FOR INHIBITING POLYMERIZATION DURING RECOVERY AND PURIFICATION OF UNSATURATED MONONITRILS |
