Pulp & Paper Bleaching
Application-Related Downloads
Application Summary
Application
Pulp & Paper Bleaching
Description
Wood pulp bleaching to attain the desired level of paper whiteness
How It’s Used
Pump bleaching agents into mixing towers to maintain correction solution
Key Feature
Chemical resistant pump materials
End Equipment
Paper pulp bleaching equipment
Pump Function
Dosing
Fluids
Hydrogen Peroxide
Flow Rate
50 mL/min (0.79 USG/hr) to 19L/min (300 USG/hr) flow rates
Differential Pressure
<40 psi (<2.76 bar)
Applications Overview
Pulp & Paper Manufacturing Process
The following illustration is an overview of the entire Pulp & Paper manufacturing process. Notice that Micropump pumps have application in three of the process steps. This application brief focuses on the application of Micropump pumps in the Bleaching process step.
Application Focus: Bleaching
In the paper manufacturing process, wood pulp leaving the digester wash unit often must be bleached to attain the desired level of paper whiteness. Bleach plants whiten pulp through three to five stages of bleaching and water washing.
Micropump pumps are used in these applications to deliver the appropriate bleaching agent and to maintain the proper chemical balance in the bleaching towers.
Micropump pumps deliver smooth, controlled flow of whitening agents to the bleaching towers.
PUMPING REQUIREMENTS
MICROPUMP SOLUTIONS
FLOW RATE: 0.050 to 18.9 L/min (0.79 to 300 USG/hr) flow rates
We have variable speed pumps with flows from 0.158 to 42.9L/min (2.5 to 680 USG/hr)
CHEMICAL RESISTANT PUMP MATERIALS
Our pump construction materials stand up to most pulp bleaching chemicals
PRECISE FLOW CONTROL
We offer positive displacement gear pumps for precise metering of bleaching agents
LEAK-FREE OPERATION
Our pumps have magnetic drives, so no shafts penetrate the pump cavity, eliminating leak-prone dynamic shaft seals
MAINTAINABILITY
We offer Service Kits for easy field serviceability
Performance Summary
This chart indicates optimal operating ranges for recommended products.
Micropump Products Optimized for this Application
Micropump cavity style pumps are commonly used for this application. All pump base materials are 316 SS with PTFE wetted materials.
The Micropump Advantage
The unparalleled quality, performance record, reliability and long operating life of Micropump pumps and our extensive engineering expertise make Micropump a vital partner in this demanding market.
Headquarters
Micropump Inc.
1402 NE 136th Avenue
Vancouver, WA 98684-0818 USA