Calcium Sulfate (CaSO4) more commonly known as gypsum is a naturally occurring white crystalline mineral that has many different uses and applications. Gypsum in its hydrated form (CaSO4•2H2O) is used in the construction industry for fire resistance in buildings. Outside of the construction industry, gypsum is used in the food and fertilizer industry for calcium and sulfate fortification respectively. When gypsum is no longer usable, it is deposited in construction and demolition(C&D) landfills where anaerobic (low oxygen) conditions and the presence of sulfate-reducing bacteria promote the decomposition of wallboard/gypsum into hydrogen sulfide gas (H2S). Due to local and state regulations on odor control, these C&D sites monitor their fill for hydrogen sulfide gas. This paper will couple two methods of analysis to observe the relationship between the purity of gypsum (calcium sulfate dihydrate) and hydrogen sulfide concentration as a sample is fermented by sulfate-reducing agents (e.g. bacteria). The scope of this research may be beneficial for industrial hygienists concerned with C&D landfill H2S levels or for incoming gypsum processing plants who suspect poor quality gypsum.
Breakdown of organic wastes entering a wastewater treatment plant is accomplished by using a biomass or blend of beneficial microscopic organisms, bacteria, and solids. This converts the nonsettleable solids (dissolved and colloidal matter) into settleable solids, carbon dioxide, water, and energy. This paper reviews the most common stages for measuring and controlling dissolved oxygen in a wastewater treatment plant.
Energy consumption remains one of the largest controllable costs in oil refineries. Heat exchanger fouling can have a significant impact on energy efficiency and production loss. Asphaltene Precipitation is caused when refiners blend incompatible crudes. This is a major source of fouling and leads to performance limitations within days. Heat exchanger fouling is a major challenge for refinery operations. With the increase in crude blending from opportunity crudes such as tight oil, the traditional “manual” monitoring approach may no longer be effective. This White Paper discusses how on-line monitoring and analysis can enable refineries to:
Better Understand Accelerated Fouling Due to Crude Incompatibilities
Learn How to Use Online Monitoring to Detect Fouling
Corrosion, leak detection and mitigation, flow pressure and volume are all factors that maintenance managers and other decision makers need to contend with as they manage flow at their chemical processing plants. In this Chemical Processing Flow eHandbook, we delve in to solutions and strategies for managing these challenges including:
Leak management - treat them as calls for action against the underlying problem
VFDs for centrifugal pumps - such drives may provide energy savings and avoid operating problems
Dealing with corrosion - piping made of high-performance plastic provides unmatched performance and longevity
Ceramic in electromagnetic flow meters - material used for measuring tubes offers high performance, longevity and a host of other benefits
Learn more about these best flow practices. Download your copy of this Chemical Processing Flow eHandbook now.
Save Money, Time, and Water With Rotary Impingement Tank Cleaning
Tank cleaning has always been viewed as a necessary evil for manufacturers. During the cleaning process, a significant amount of resources (time, chemicals, water, electric and labor) is required between batches to ensure a reliable, uncontaminated, quality batch is produced. Although these repeating expenditures have a significant effect on the bottom line, many chemical manufacturers continue to rely on outdated processing for cleaning, not realizing the potential opportunity for substantial cost reductions and revenue recovery through CIP optimization.This whitepaper includes specific case studies on the benefits of rotary impingement and CIP optimization vs. the standard tank cleaning processes. These benefits include drastic savings in time and water usage as well as employee safety.
Know Your TCO: A look at Medium Voltage VFDs
Medium voltage VFDs are high cost, high consideration assets that greatly improve process control and efficiency in manufacturing facilities. It is vital that you and your company understand the TCO of this asset. Download the white paper for more information.
Five Keys to Avoiding Ethylene Valve Failures
This concise, compelling overview of best practices in purchasing and maintaining ethylene valve packages is an essential read for industry professionals. The white paper will tell you how to: 1) Select the right seats and seals; 2) Select the right coating materials; 3) Know the quality of the valves you're buying; 4) Find a trusted single resource for your valve package purchases; 5) Keep up with required maintenance.
Bristol-Myers Squibb Works hard to be a Good Neighbor
Bristol-Myers Squibb manually monitored dissolved oxygen (DO) periodically and ran aeration blowers more than necessary to guard against variable loading rates. After upgrading the system to use online DO monitoring operators now have continuous DO readings in the aeration tanks, substantially reducing energy and maintenance costs.
Chemical processors continually strive to find technologies and solutions for improving system performance and plant uptime. Often working around the clock to process, transfer, and store sometimes hazardous and corrosive chemicals, processors must tackle issues related to physical properties and process parameters. In this Chemical Processing Flow eHandbook, we take a look at what it takes for chemical processors to achieve effective flow management including:
Streamlining processes – how removing complexities that creep in over time can enhance operations
Orifice plates – when insufficient flow conditioning undermines measurement accuracy
CPVC for Chlor-Alkali Applications – why chlorinated polyvinyl chloride offers many advantages over other materials
Understand the many facets of flow. Download your copy of this Chemical Processing Flow eHandbook now.
Spikes in energy costs or unplanned-for capital improvement expenses can put organizations in tricky financial situations. To solve them, they often select the option with the lowest upfront cost which leads to the “pay me now or pay me later” dilemma. Over time it’s discovered that these lower-priced alternatives cost much more due to higher failure rates, wasted energy and more intensive maintenance. This Chemical Processing Steam eHandbook presents steam technologies and strategies for reducing cost associated with using and generating steam including:
How a Texas-based plant pared steam consumption - Thinking differently about energy management lead to substantial savings
Steam trap selection - A life cycle analysis approach can help reduce maintenance and prolong steam trap life
Reduce consumption with a simple formula to determine the proper steam demand for DSI heaters
Learn how to generate savings through steam use and generation. Download your copy of this Chemical Processing Steam eHandbook now.
Reliability programs are now standard business practice in companies that rely heavily on machines, equipment and other physical assets. But, in today’s lean economy, companies have fewer resources than ever to manage and maintain these assets. Plants face challenges in identifying new and cost-effective ways to ensure their assets are performing and that they are managing to minimize operational risks. In this Chemical Processing Reliability/Asset Management eHandbook we take a look at proactive approaches for improving reliability and maintenance in today’s processing plant including:
• Equipment rotation: identify damaged and worn components before they cause problems • Backflush strategies: flow reversal can remove fiber buildup in heat exchangers • Advanced Reliability Management: key steps for leveraging limited resources and critical assets • Predictive Maintenance: detailed analysis of maintenance records can further improve equipment reliability • More!
Preventing Phenolic Resin Reactor Accidents
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.
This practical guide and checklist ties the unique operations of chemical manufacturers to specific ERP functionality and architecture. Topics include:
Variability and Quality
Product Accountability and Costing
Don't settle for a "one size fits all" ERP solution. With the "right fit" ERP solution, you will be able to streamline operations, reduce costs and scale production, while complying with federal regulations -- all with minimum customization.
Preventive Maintenance of Chemical Hot-Oil Systems
Heat transfer and other process fluids -- from mineral oils to synthetic and organic-based formulas -- are the lifeblood of many critical operations within chemical and the process industries. Their condition reveals critical details about the health of the entire process itself, and that of the components of the system and their interoperation. Register for access to two special E-Books, which come in an interactive PDF format with links to additional web resources.
Cost-Justify Your Reliability Initiatives
For the latest strategies on how to set an effective reliability program, download this Special Report: Cost-Justify Your Reliability Initiatives.
In this report youll find:
Predictive tools and technologies for enhanced equipment reliability
The four things a plant manager can do that maximize reliability
Critical equipment for an effective maintenance program
Training Your Staff About Energy Efficiency -- A Chemical Processing Special Report
Certainly over the last few years, how plants consume energy has made an impact on that plant's efficiency and profitability. But is everyone at your plant doing their part? From Process Engineers to Plant Managers, everyone can have a role in implementing and adhering to energy efficient practices and exploring ways to improve energy efficiency. Chemical Processing has taken an in-depth look at just how this can been accomplished and compiled a comprehensive Special Report titled: Training Plant Staff About Energy Efficiency. Now available for download, this informative Special Report covers such topics as training operators, available energy tools, assessing equipment and more.