Production method of polyphenylene sulfide resin and recovery method of rectification raffinate
A technology of polyphenylene sulfide resin and production method, which is applied in the direction of chemical recovery, etc., can solve the problems that metal salt catalysts cannot obtain qualified products, do not save production costs, and have a large melt flow index, so as to reduce environmental pollution pressure, The effect of reducing energy consumption and simple equipment
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0034] Add 100kg of lithium chloride-containing polyphenylene sulfide solvent recovery tower kettle residual slurry and 500kg of methanol into the dilution tank respectively, dilute and disperse the viscous slurry, and add 20kg of sodium carbonate for stirring and precipitation, and the mixed solution Carry out filtration, collect filter cake and filtrate, and backwash filter cake with 10kg methanol, merge the filtrate that collects before and send into the solvent recovery finished product tower to handle; Add 0.5kg of caustic soda to adjust the pH of the solution to 6, 0.1kg of PVA0588, and 0.1kg of magnesium chloride to purify and filter the catalyst solution, and rinse the filter cake with 30kg of methanol again, send the combined liquid into an evaporator, concentrate and dry the catalyst solution to contain the catalyst 30%, as a catalyst for the next batch of polyphenylene sulfide resin synthesis.
[0035] The preparation method of polyphenylene sulfide is the disclosed...
Embodiment 2
[0038]Add 100kg of residual slurry in the polyphenylene sulfide solvent recovery tower containing lithium acetate, and 100kg of water into the dilution tank, dilute and disperse the viscous slurry, and add 100kg of potassium carbonate for stirring and precipitation, and the mixed solution is Filter, collect the filter cake and filtrate, and backwash the filter cake with 100kg of water, combine the filtrate collected before and send it to the solvent recovery finished product tower for processing; the filter cake is transferred to the neutralization tank, add 100kg of glacial acetic acid for acidification, and add 10kg of ammonia water is used to adjust the pH of the solution to 8, 10kg of PVA1700, and 10kg of magnesium nitrate to purify and filter the catalyst solution, and to wash the filter cake with 50kg of water again, and the combined liquid is sent to an evaporator, and the catalyst solution is concentrated and dried to contain 50% of the catalyst. As a catalyst for the n...
Embodiment 3
[0041] 100kg of residual slurry in the polyphenylene sulfide solvent recovery tower containing cesium chloride and 300kg of ethanol were added to the dilution tank respectively, the viscous slurry was diluted and dispersed, and 80kg of potassium carbonate was added to stir and precipitate, and the mixed solution Filter, collect the filter cake and filtrate, and backwash the filter cake with 60kg of ethanol, combine the filtrate collected before and send it to the solvent recovery finished product tower for processing; the filter cake is transferred to the neutralization tank, add 60kg industrial hydrochloric acid for acidification, and Add 1kg of caustic soda to adjust the pH of the solution=7.2, 5kg PEG-400, and 1kg calcium chloride to purify and filter the catalyst solution, and rinse the filter cake with 10kg ethanol again, and send the combined liquid into an evaporator, concentrate and dry the catalyst solution to contain 60% of the catalyst is used as a catalyst for the n...
PUM
| Property | Measurement | Unit |
|---|---|---|
| melt flow index | aaaaa | aaaaa |
| whiteness | aaaaa | aaaaa |
| whiteness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More