Double-pH-value wet-strength waste paper recycling pulping method
A wet-strength, waste paper technology, used in waste paper recycling chemical mechanical pulping systems and pulping fields, can solve the problems of reflocculation, high price, fiber damage, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0073] Example 1: Bleaching wet strength agent-containing paper machine broke and scrap repulping recovery
[0074] Broken paper and scraps are transported by the chain plate conveyor to the hydraulic pulper and broken into pieces, and then transported to the drum washing machine 4 to adjust the concentration to 3% for washing and slag removal, and then pumped by the tablet pump 5 to The inclined screw dehydrator 6 is dehydrated and concentrated, and then transported to the steaming bin 7 for steaming for 15 minutes, and the steam pressure is 0.3MPa. According to the weight percentage of the absolutely dry raw materials, when entering the steaming bin, 0.1% is sprayed into the feed port in a mist form. rewetting agent; after steaming, the tablets are sent to the first twin-screw impregnating machine 9 by the third screw conveyor 8, squeezed and kneaded into a filamentous mass and concentrated to a concentration of about 35%, and then according to the weight of the absolutely dr...
Example Embodiment
[0076] Example 2: Unbleached wet strength agent-containing paper machine broke and scrap repulping recovery
[0077] Broken paper and scraps are transported by the chain plate conveyor to the hydraulic pulper for disintegration into paper pieces, and then transported to the drum washing machine 4 to adjust the concentration to 4% for washing and slag removal, and then pumped by the tablet pump 5 to the inclined position. The screw dehydrator 6 is dehydrated and concentrated, and then transported to the steaming bin 7 for steaming for 25 minutes, and the steam pressure is 0.45MPa. According to the weight percentage of the absolutely dry raw materials, when transported to the steaming bin, 0.12% is sprayed in the feeding port in a mist form. rewetting agent; after steaming, the material is sent to the first twin-screw dipping machine 9 by the third screw conveyor 8, squeezed and kneaded into a silk mass and concentrated to a concentration of about 40%, and then according to the w...
Example Embodiment
[0079] Example 3: Repulping recovery of unbleached wet strength agent-containing waste paper and waste carton board
[0080] The waste paper and waste carton board are transported by the chain conveyor to the shredder to be shredded into paper pieces, and then transported to the drum washing machine 4 to adjust the concentration to 5% for washing and slag removal, and then pumped by the tablet pump 5 To the inclined screw dehydrator 6 for dehydration and concentration, and then transported to the steaming bin 7 for steaming for 30 minutes, the steam pressure is 0.6MPa, according to the weight percentage of the absolutely dry raw materials, when transported to the steaming bin, it is sprayed into the feeding port in mist form. 0.15% rewetting agent; after steaming, the tablets are sent to the first twin-screw dipping machine 9 by the third screw conveyor 8, extruded and kneaded into silk balls and concentrated to a concentration of about 45%. % by weight, add 1.5% H by the mete...
PUM
Abstract
Description
Claims
Application Information
- 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