Pulping With Inorganic Bases TRIZ Cases
- Oxidized Kraft Lignin Production With Sodium-Sulfur Recovery
Oxidizing unwashed kraft lignin with white liquor and membrane filtration enables in-mill surfactant production while preserving sodium and sulfur balance.
- Black Liquor Filtration and Lignin Recovery for Lower-Energy Pulping
Multi-stage filtration, lignin precipitation, and electrodialysis cut black liquor recovery energy while separating reusable sodium chemicals.
- Pulp Digestion Accelerator Composition for Faster Lignocellulose Breakdown
A quaternary ammonium, amine, and sulfide-generating accelerator speeds lignocellulose digestion to raise pulp output with less wood use.
- Kraft Foul Condensate Air-Steam Stripping for Ammonia and Methanol
Air and steam stripping treats Kraft foul condensate, removing ammonia and recovering methanol.
- Chemical Pulping Using Lime and Aluminum Sulfate
Replacing caustic soda with lime and adding aluminum sulfate recycles black liquor organics, increasing pulp yield while eliminating sewage pollution.
- Xylan Recovery from Black Liquor via pH Adjustment
Adjusting black liquor pH to 1-9 insolubilizes xylan, resolving low extraction rates and high alkali costs in hardwood processing.
- Phosphonate Polymers for Calcium Sequestration in Kraft Pulping
Phosphonate polymers sequester calcium ions to prevent scaling, enabling higher pulp yields.