PNEUMATIC CONVEYING SYSTEMS
Pneumatic transport
Dilute phase conveying
Dense phase conveying
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| Index to all knowledge interesting to Process Engineers in the field of Pneumatic Conveying. This pneumatic conveying design guide is split in pages that can be consulted independently |
Pneumatic conveying systems handbook : fundamentals, design & components of pneumatic conveyor of solids and powders
Pneumatic conveying systems are used to transfer bulk solids materials (powder, granule...) in pipes by using a gas, most of the time air, as the transport medium. Although simple in appearance, many design and operational parameters must be well mastered to implement a successful pneumatic conveying system. PowderProcess.net is proposing this Engineering guide to help you in choosing, designing and operating pneumatic conveying lines.
A guide about pneumatic conveying, a method for transporting powders using gas as a carrier. Understand dilute and dense phase conveying, including pressure and vacuum systems. Explore the pros and cons of each technology in this comprehensive guide.
This article is focusing on dilute and dense phase conveying and the Geldart classification, which helps determine if your solids can be conveyed pneumatically. You can get information about the different flow regimes in pneumatic conveying and their suitability for various materials in this informative guide.
Design and operation of dilute phase
pneumatic conveying systems : all
dilute phase conveying fundamentals are accessible on this page.
Dilute phase conveying is particularly adapted to large scale
processes requiring high capacities such as flour production.
A detailed article about dense phase pneumatic conveying, a method for moving bulk solids using air. Unlike dilute phase conveying, dense phase systems use minimal air relative to the product's weight, reducing breakage and segregation. Learn how pressure and vacuum dense phase conveying setups work, which materials are suitable, and find reputable manufacturers for your conveying needs.
To move air in a pneumatic conveying system, you'll need air movers. This page is reviewing such equipment like rotary Roots blowers or newer rotary screw blowers. These devices create pressure or vacuum depending on their placement. Roots blowers are versatile and operate in both pressure and vacuum modes. Other options include fans, compressed air, and vacuum pumps, each suitable for different conveying needs and pressure levels.
This article covers the use of blowers in pneumatic conveying systems. You'll learn about Roots blowers, their design with 2 or 3 lobes, and the need for clean air. These blowers can handle pressures up to 1 bar in pressure and -0.5 bar in vacuum. Design considerations include volume changes with pressure and energy efficiency.
This
webpage explains the importance of a blower performance curve in
pneumatic conveying systems. It helps you choose the right
blower for your system or troubleshoot an existing one. You'll
learn how to read the curve, calculate air flow rates, and make
informed decisions for efficient conveying.
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Learn about aftercoolers in pneumatic systems. Blowers can heat air during compression, affecting downstream processes. Aftercoolers help cool the air, improving equipment performance and preventing material damage due to high temperatures. Discover types of aftercoolers, including liquid media and air aftercoolers. Understand design considerations like pressure drop, temperature monitoring, and condensation prevention. Choose the right aftercooler to optimize your pneumatic conveying system.
All about
airlock rotary valves, essential devices in bulk solids
handling. Learn about their types, functions, and
troubleshooting to optimize your process. Understand how to
prevent issues like performance below design, metal contact
damage, and wear. Improve your system's efficiency with this
valuable information.
This page explains how to supply products to pneumatic conveying lines effectively. Learn about different technologies for dilute and dense phase systems, including airlock rotary valves, screw conveyors, and more. Optimize your conveying process with the right product supply methods.
Complete information about pneumatic conveying pipe design, couplings, bends, section length, support, and layout. Make informed decisions to optimize your conveying system for efficient and reliable performance.
Discover the importance of dedusting filters in powder handling systems. The page is proposing a detailed review about filter types, design, performance factors, safety, and reliable manufacturers for efficient dust management.
Calculation of pick-up speed in pneumatic conveying line, estimation of minimal conveying speed for solids and powder conveying systems, references for common solids handled process industries
Discover the significance of saltation
velocity in pneumatic conveying. While trial runs in a pilot plant
offer precise measurements, you can use the Rizk correlation
formula for initial design assessments or troubleshooting.
Calculation of choking velocity of solids in pneumatic conveying lines
Calculation of air velocity in pipes, references for dilute and dense phase
Calculating air volumetric flow rate and converting to mass flowrate
Calculation of the equivalent length of a complex piping layout
Learn about slip factor in pneumatic
conveying. When transporting powder in a pneumatic system, solids
don't move at the same speed as the conveying air due to factors
like drag, bouncing, and settling. The slip factor represents the
difference in velocities between solid particles and air.
Calculate particle velocity using the slip factor and understand
how it varies in different pipe configurations, like straight
pipes and bends.
This webpage explores the impact of bends in pneumatic conveying lines. Learn how bends affect pressure, blockages, product and pipe damage, and how to troubleshoot these issues. Understand different bend designs and their pros and cons. Improve your conveying system by optimizing bend placement and choosing the right bend types.
This page is focusing on powder breakage and pipe wear in pneumatic conveying. Estimation methods of powder breakage levels and find ways to reduce it are explained. Explore practical methods like adjusting conveying velocity, switching to dense phase conveying, minimizing bends, and choosing bend types that reduce impact force. Understanding and managing these factors is essential for maintaining the integrity of your conveyed materials.
Learn about pneumatic conveying pressure drop calculations in this straightforward guide. Discover the key factors affecting pressure drop in horizontal pipes, vertical pipes, and bends. Gain insights into the physical phenomena involved and understand how to estimate total pressure drop.
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Pipe diameter or bore
Specify the right pipe diameter for a conveying line
Air conveyor design : shortcut calculation methods to size a dilute phase bulk solids pneumatic transport line
Learn about
pneumatic conveying pressure drop calculations with this
straightforward guide. Four methods for estimating pressure
drops in dilute phase systems are presented. You can access
Excel Calculation Sheets for three of these methods.
This article explains how to design and size dense phase pneumatic transport lines. The method is about scaling pilot plant results to industrial applications, ensuring constant parameters like solids load ratio and air velocity. Calculation procedures are explained and an Excel tool is given for scale-up. Published methods and references for dense phase pneumatic conveying design.
What is the solids load ratio in pneumatic conveying systems ? Discover its definition how to calculate it. Find typical values for different conveying phases: dilute, intermediary, and dense phase. Understand the importance of solids load ratio in characterizing flow.
Learn about the causes of blockages in pneumatic conveying systems and how to prevent them. Discover design considerations like minimum air conveying velocity, pressure drop, and pipe layout. Find out how to control flow, check for pipe leakages, and maintain filters to avoid blockages during operation. Additionally, explore methods for unblocking pneumatic conveying pipes when blockages occur.
The page discusses powder build-up in pneumatic conveying systems, its causes, including conveying air conditions, fine materials, and sticky substances. The page is proposing some solutions to test like adjusting air conditions, changing pipe bends, using flexible pipes, or considering dense phase conveying to minimize build-up in your system.
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Selecting lean phase or dense phase
How to chose to convey a material in dilute phase or in dense phase
Estimate blower power for dilute phase pneumatic conveying with a simple formula. Calculate air mass flow rate and blower power required for your specific conveying needs.
Informations about the behavior of air and solids in horizontal pneumatic conveying pipes. The page explains what is saltation velocity and the importance of maintaining adequate air velocity to prevent pipe blockage in dilute phase conveying. Understand the unique dynamics of dense phase conveying and the challenges it presents.
Learn about the impact of vertical conveying on pneumatic systems. Discover how elevation affects pressure drop, whether for dilute or dense phase conveying. Understand the importance of pipe layout design and avoiding inclined pipes in pneumatic conveying systems.
Understand how streamers and fines are generated when conveying plastic pellets, how to prevent them, how to remove them from the product stream
Explains how sugar can be pneumatically conveyed in dilute and dense phase, and what one should be careful when designing and operating such a system (humidity, temperature)