Method and device for efficiently bleaching medium-concentration paper pulp through cooperation of ozone and chlorine dioxide
A chlorine dioxide and ozone technology, applied in pulp bleaching, textile and papermaking, cellulose pulp post-treatment, etc., can solve the problems of high cost, dependence, and low pulp strength, reduce pollution load, and upgrade easily Efficient and synergistic bleaching effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0080] Ozone and chlorine dioxide bleaching process:
[0081] (1) The slurry in the previous section enters the medium consistency standpipe 1, adding dilution water to adjust the quality pulp concentration to 12%, adding a certain amount of acid solution to adjust the pH to 3, and turning on the medium consistency pump 2 to transport the pulp.
[0082] (2) Ozone addition: open the first air inlet valve 10 to press in the ozone with an amount of 0.6%, and open the pre-mixer 3 to make the ozone and the slurry mix and react.
[0083] (3) Open the steam inlet valve 14 to add steam, and the steam and the slurry are mixed in the steam mixer 4 and heated to 60°C.
[0084] (4) Chlorine dioxide addition: open the chlorine dioxide inlet valve 13 to pump chlorine dioxide in an amount of 0.3%, and open the middle mixer 5 to make the chlorine dioxide and the slurry mix and react.
[0085] (5) Supplementary reaction: the slurry mixed with ozone and chlorine dioxide directly enters the ble...
Embodiment 2
[0102] Ozone and chlorine dioxide bleaching process:
[0103] (1) The slurry from the previous section enters the medium-consistency riser 1, adding dilution water to adjust the mass pulp concentration to 12%, adding a certain amount of acid solution to adjust the pH to 2, and turning on the medium-consistency pump 2 to transport the pulp.
[0104] (2) Ozone addition: open the first air inlet valve 10 to press in the ozone with an amount of 0.4%, and open the pre-mixer 3 to make the ozone and the slurry mix and react.
[0105] (3) Open the steam inlet valve 14 to add steam, and the steam and the slurry are mixed in the steam mixer 4 and heated to 60°C.
[0106] (4) Chlorine dioxide addition: open the chlorine dioxide inlet valve 13 to pump chlorine dioxide in an amount of 0.5%, and open the middle mixer 5 to make the chlorine dioxide and the slurry mix and react.
[0107] (5) Supplementary reaction: the slurry mixed with ozone and chlorine dioxide directly enters the bleachin...
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, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com