Method for extracting ammonium sulfate from synthetic mother liquor containing phenol
A technology for synthesizing mother liquor and ammonium sulfate, applied in ammonium sulfate and other directions, can solve problems such as poor quality of ammonium sulfate, and achieve the effect of simple operation and high quality
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0015] 1. Add phenol-containing synthetic mother liquor with a volume of 3000L into a 5000L hot kettle, turn on steam, concentrate at normal pressure, and concentrate to 2700L. The density of the mixed acid synthetic mother liquor is 1.2g / cm3 at 80°C 3 , this kind of mother liquor is called the first concentrated mother liquor;
[0016] 2. Transfer the first concentrated mother liquor obtained in the above step 1 to a cold kettle to cool down to 40°C, add 2700L of methanol, stir for 1 hour, filter, wash the filter cake with methanol, and dry it to obtain ammonium sulfate. The filtrate weighs It is used as a mother liquor for later use;
[0017] 3. Put the primary mother liquor obtained in the above step 2 into a hot kettle at 70° C. and turn on the steam to reduce the pressure to vacuum and concentrate, distill out methanol until there is no liquid flow, and can be reused.
Embodiment 2
[0019] 1. Add phenol-containing synthetic mother liquor with a volume of 3000L into a 5000L hot kettle, turn on steam, concentrate at normal pressure, and concentrate to 2700L. The density of the mixed acid synthetic mother liquor is 1.2g / cm3 at 80°C 3 , this kind of mother liquor is called the first concentrated mother liquor;
[0020] 2. Transfer the first concentrated mother liquor obtained in the above step 1 to a cold kettle to cool down to 20°C, add 2700L methanol, stir for 2 hours, filter, wash the filter cake with methanol, and dry it to obtain ammonium sulfate. The filtrate weighs It is used as a mother liquor for later use;
[0021] 3. Put the primary mother liquor obtained in the above step 2 into a hot kettle at 80° C. and turn on the steam to depressurize to 0.9 Mpa. Concentrate and distill methanol until there is no liquid flow, which can be reused.
Embodiment 3
[0023] 1. Add phenol-containing synthetic mother liquor with a volume of 3000L into a 5000L hot kettle, turn on steam, concentrate at normal pressure, and concentrate to 2700L. The density of the mixed acid synthetic mother liquor is 1.2g / cm3 at 80°C 3 , this kind of mother liquor is called the first concentrated mother liquor;
[0024] 2. Transfer the first concentrated mother liquor obtained in the above step 1 to a cold kettle to cool down to 30°C, add 2700L methanol, stir for 1.5 hours, filter, wash the filter cake with methanol, and dry it to obtain ammonium sulfate. The filtrate weighs It is used as a mother liquor for later use;
[0025] 3. Put the primary mother liquor obtained in the above step 2 into a hot kettle at 75° C. and turn on the steam to depressurize to 0.06 Mpa. Concentrate and distill methanol until there is no liquid flow, which can be reused.
PUM
Login to view more Abstract
Description
Claims
Application Information
Login to view more - R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap