As many chemical processors know, processing powders can be tricky. Powder properties can be affected if the materials are stored for long periods. Powders can be compressed, vibrated, aerated and exposed to moisture. And specific processes like granulation, blending, drying, milling, lubricating and compression put requirements on how powders can be handled. In this Chemical Processing Powder eHandbook, we take a look at how to effectively process powder including:
Compression dryers – the case for choosing a solution that produces optimal air quality and low energy consumption
GHS – understanding the requirements and what it means to chemicals processors
Predicting powder flow behavior
Vibratory screen cleaning methods
Fine powder flushing - eliminating a common bin-afflicting problem caused by trapped air
Tubular Drag Conveying Technology – an alternative to pneumatic conveying
White paper provides descriptions and the cleaning efficiency levels of the most commonly used tank cleaning practices, including specific case studies on the cost-saving benefits of rotary impingement tank cleaning and CIP optimization vs. standard tank cleaning processes.
Combustible dust fires happen in plants everyday. This white paper helps manufacturers learn more about combustible dust hazards and ways to handle combustible dust in your manufacturing plant in order to comply with OSHA's NEP. Learn more about choosing the right cleaning tools for your facility.
An easy to use generalized vent sizing formula is illustrated to be consistent with large scale industry experience and dedicated phenolic runaway reaction tests performed by Fauske & Associates, LLC. The formula also clearly explains the 1999 catastrophic failure of a phenol-formaldehyde reactor resulting from a grossly undersized relief system.
One of the trickiest materials to process, solids are comprised of powders or particulates, a continuous gaseous phase (usually air) and, almost always, a liquid component. Processors that handle solids know only too well the types of throughput problems that come up on a recurring basis. Effective, economical and safe slurry management; flowability during processing, accurate inventory and volume level management are all very real challenges faced by processors of solids. In this Chemical Processing Powder eHandbook, we take a look at how to effectively handle solids including:
Properly accounting for how bulk solids actually will flow in a vessel or overall process -- we take a look at some simple parameters that can often provide a good sense of flowability
Strategies for avoiding slurry trouble
Mitigating pipe segment force imbalances with Reactor Excursion and Leakage Analysis Program
Acoustics-based level measurement for accurate powder measurement in bins, tanks and silos
Explosion protection methods including suppression, isolation and venting
One of the trickiest materials to process, solids are comprised of powders or particulates, a continuous gaseous phase (usually air) and, almost always, a liquid component. Processors that handle solids know only too well the types of throughput problems that come up on a recurring basis. Clumping; effective, economical and safe slurry mixing; dust management and dust explosion risk mitigation are all very real challenges faced by processors of solids. In this Chemical Processing Powder eHandbook, we take a look at how to effectively handle solids including:
Clumping – the 10 most common sources of agglomeration in bulk solids and how to effectively manage them
Strategies for optimal slurry mixing
Level management detection in storage vessels
Dust explosion risks – how to identify and mitigate when processing solids
Managing solid cohesiveness with flow strategies
Download your copy of this Chemical Processing Powder eHandbook now.
Specific case studies on the benefits of rotary impingement and CIP optimization vs. the standard tank cleaning processes. Benefits include: increased revenue and production with drastic reductions of operating costs pertaining to tank cleaning.
A large number of analytical and highly empirical correlations including monograms reflecting changing standards have been or are being proposed separately for gas and dust explosion relief venting. This white paper provides a generalized formula that is applicable to both gas and dust deflagrations including subsonic and sonic pressure relief conditions and is consistent with available experimental data and industry experience. Application of the model is illustrated for dust explosions. Download now.
In March 2008, OSHA reissued its Combustible Dust National Emphasis Program (NEP) notifying approximately 30,000 companies nationwide that they will be targeted for inspections over the next few years. Mettler Toledo recognizes that many manufacturers are not up-to-date on the latest hazardous area compliance regulations or may not know that their industry is subject to those regulations. Don't wait until your facility receives a surprise visit from OSHA or worse yet, for a catastrophic incident to occur. Take the proactive approach to addressing the "hazardous area advisory level" in your facility.
Over the past decade, cartridge-style dust collectors have overtaken baghouses as the preferred technology for dust collection in the chemical processing industry. Combining high efficiency filtration with compact size and reduced pressure drop, a high efficiency cartridge dust collector will in most cases be the system of choice.
Choosing the best cartridge collection system for a given application, however, involves research and attention to detail. This article will review four key areas of investigation. By reviewing these topics with a knowledgeable equipment supplier and knowing the right questions to ask, chemical manufacturing professionals will be better equipped to make informed dust collection decisions. Download this whitepaper now.
The collection and testing of dust samples is a long-established practice used by many powder and bulk processors to make informed dust collection decisions. Dust testing protocols have not changed markedly in recent years. The importance of dust testing, however, has changed, and the implications are significant. While knowing your dust has always been good practice, it is rapidly becoming a necessity in today's regulatory climate.
This article will review two separate types of testing: (1) explosibility testing, which is used to determine whether a dust is combustible; and (2) bench testing, which pinpoints numerous physical properties of the dust. Both categories of tests are needed to determine the best dust collection system for your application and whether explosion venting equipment must be part of that system.
Gaseous oxygen measurement with amperometric sensors is the most direct and easiest solution for oxidation and explosion protection.
Unwelcome oxygen Tank blanketing is the process of filling the headspace in storage vessels and reactors with an inert gas to prevent its contents from exploding, degrading or polymerizing and to protect equipment from corrosion. A blanketing system is normally designed such that it operates under higher than atmospheric pressures, therefore preventing outside air from entering the vessel. As oxygen and moisture in the air can be undesired in numerous processes and applications, blanketing is done in a wide range of industries, varying from (petro)chemical to food and beverage, pharmaceutical to pure water.
Plants have traditionally used trays in the distillation columns to produce fuels grade ethanol. Trays of various configurations have been adequate in this service and their technology is well founded. The ever-present desire to reduce the energy needed to produce a gallon of ethanol has opened the doors to structured packings being used in the rectification sections of ethanol distillation columns.
Manufacturing a pure product can be critically important to the next steps in the manufacture of a powder-based product. As a result the removal of residual moisture and solvents from the crystallization, filtration and drying steps can be crucial to producing a stable product.
This application note describes two technology solutionscontinuous weight information using loadcell systems or level information using ultrasonic systemsto the problems faced by day bins supplying downstream operations.
In this article, Kumar Dhanasekharan, Ph.D., technical specialist with the computational fluid dynamics (CFD) specialist Fluent, Inc., shows how modelling crystallizers using CFD can help improve process understanding, control crystal size distribution (CSD) and improve pharmaceutical crystallization results.
Processors have long recognized the importance of tank and reactor cleaning to product quality. This NLB white paper discusses cleaning methods and the significant implications your choice can have on productivity, safety and profitability.
Specifying a hygienic bulk solids feeder is not a simple task. The wide variety of requirements needed
for specific applications are similar in scope to explosion proof environmental requirement variations.