Dehydration aid
The use of cellulose materials with specific properties enhances dewatering efficiency by reducing time and preventing cake adherence, addressing the limitations of existing methods.
WO2026121135A1 Publication Date: 2026-06-11NIPPON PAPER IND CO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- NIPPON PAPER IND CO LTD
- Filing Date
- 2025-11-28
- Publication Date
- 2026-06-11
AI Technical Summary
⚠Technical Problem
Existing dewatering methods for inorganic sludge, such as those described in Patent Document 1, suffer from slow dewatering times, cake adherence to filter cloths, and the inability to reuse wastewater due to the use of surfactant chemicals.
⚗Method used
A dehydration aid using cellulose materials, such as pulp, with specific physical properties like fiber length, width, and copper number, is used in conjunction with flocculants to enhance dewatering efficiency and facilitate solid-liquid separation.
🎯Benefits of technology
The cellulose-based dehydration aid significantly reduces dewatering time, prevents cake adherence, and allows for clear separation, enabling efficient and easy dehydration of inorganic substances.
✦ Generated by Eureka AI based on patent content.
Smart Images
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Abstract
A purpose of the present invention is to provide a dehydration aid that can exhibit good dehydration performance with respect to a liquid composition containing an inorganic substance. The present invention provides a dehydration aid for a liquid composition containing an inorganic substance, said substance containing a cellulosic material such as pulp and having a kappa number greater than 1; and a method for dehydrating a liquid composition containing an inorganic substance in which a dehydration aid is brought into contact, along with a flocculant, with a liquid composition containing an inorganic substance. The pulp preferably has a brightness of 10-95%, with hardwood pulp or softwood pulp being preferred. The cellulose material preferably has either a fiber length of 0.2-5 mm or a fiber width of 10-50 μm.
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