离心泵在真空系统的应用

• Water savings up to 1000 000m3/a per production line
• Improving system reliability • Saving in installation cost • Saving in building cost • Saving in shutdown time • Saving in maintenance cost There are examples described. The technical scope and results are based on real life projects.
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2. ECOPUMP TURBO VACUUM SYSTEM FOR A
PAPER, BOARD OR PULP MACHINE
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2.1. PRINCIPLE OF THE ECOPUMP TURBO
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2.2. CHALLENGES IN PRODUCING VACUUM FOR
PAPER MACHINE
• The vacuum system must handle today’s production, but also possible speed increases in the future
• The vacuum need on felt conditioning is varying depending on the felt types and age of them
This book describes the benefits and working principles of ECOPUMP TURBO VACUUM SYSTEM for paper machines:
• Power savings 500..1000 kW compared with traditional systems
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4.6. HEAT RECOVERY POTENTIAL
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5. TECHNICAL DATA EP500-700-S(D1) & EP315-500-S(D1)
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6. REFERENCE LIST
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1. GENERAL
Ecopump energy saving group has been working since 1989, with a clear target of reducing power consumption of paper machine pumping systems. Four product lines have been developed to realize the great saving potential in paper production process:
• The grammage, grade and speed varies
• Seal water is becoming ever more costly due to not only regulations but also to increasing need to control temperatures, pH and bacteria (specially with closed circulation)
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2.3. LIMITATIONS OF TRADITIONAL VACUUM
SYSTEMS
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2.4. DIFFERENT PRACTISES AND TRADITIONS OF
VACUUM USAGE
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3. ECOPUMP TURBO FEATURES
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4. MAIN BENEFITS OF ECOPUMP TURBO IN PAPER
• Availability requirements do not allow long maintenance shutdowns
• The air to be pumped contains water, other liquid media and solids.
• The rising cost of power means it is not economical just to simply bleed off the extra capacity
• Ecopump Turbo vacuum systems
• Ecoflow dewatering measurements
• Ecosep water separators
• Vacuum system consulting
Based on the experiences on practical process optimization work, and the fact that no vacuum pumps with good controllability were available on the market, Ecopump started to develop its own system. The development was done in close cooperation with top technologists from technological universities, aerospace engineering companies and electric drive suppliers. After some years of intensive design, testing and production scale piloting, the system has found its position as the most efficient modern vacuum system for paper machines.
Picture 1: Ecopump Turbo. The electric drive is included in the scope. 5
2.2. CHALLENGES IN PRODUCING VACUUM FOR PAPER MACHINE
An efficient use of vacuum system for paper machine positions face the following An efficient use of vacuum system for paper machine positions face the following challenges:
The turbo impellers are directly mounted on the motor shaft, which makes the
system very compact and mechanically reliable. No gearbox or couplings are needed. The solid shaft AC motor is robust and has no resonance frequencies within the operating range. Cast titanium impellers are mechanically and chemically very stable.
Oil lubricated ceramic ball bearings and lightweight parts make the system easy to handle from maintenance point of view. Scheduled maintenance (bearing change) can be done on minimum during an 8-12 hours shutdown.
Other important features are: water savings, savings in foundation work due to compact size and low weight, savings directly in maintenance work and parts as well as indirectly in saving maintenance shutdown time.
MACHINE INSTALLATIONS
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4.1. POWER SAVING
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4.2. WATER SAVING
Байду номын сангаас13
4.3. IMPROVING SYSTEM RELIABILITY
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4.4. SAVING IN BUILDING COST
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4.5. REDUCING SHUTDOWN TIME IN REBUILDS
is a great potential for power savings by eliminating excess capacity due to over dimensioning – the systems are often over dimensioned due to uncertainties concerning new machine concept or when reserving capacity for eventual speed increase. There are also
2. ECOPUMP TURBO VACUUM SYSTEM FOR A PAPER, BOARD OR PULP MACHINE
During years of optimizing existing paper machine vacuum systems, and conducting dewatering trials utilizing Ecoflow dewatering measurements, it became obvious that there is a need for a VACUUM SYSTEM WITH ADJUSTABLE SPEED CONTROL. There
variations in capacity need because of different running conditions new felts vs. old felts, different felt types, high grammage vs low grammage, etc. With adjustable capacity these savings can be realized directly to the bottom line.
Paper machine vacuum system
ECOPUMP TURBO SYSTEM
- THE ADVANTAGES AND PRINCIPLES OF INSTALLING AND USING
SPEED CONTROLLED VACUUM SYSTEM
CONTENTS
1. GENERAL
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2.1. PRINCIPLE OF THE ECOPUMP TURBO
Ecopump turbo is based on a combination of modern high-speed electric drive and high efficiency turbo blower. The unit is driven with a frequency converter, which enables the speed control from zero to maximum without any limitations in operation range. Even marginal savings in vacuum capacity will result to significant savings in electric power. Speed control is the most efficient way to adjust capacity.