Displaying 1–25 of 294 results for Water/steam
Emerson’s SIL 3 certified single controller for water and steam enables plants to protect valuable assets and improve worker safety.
Boiler feedwater or steam issues can cause equipment failures and curtail production. Steam production requires high purity water; proper water treatment and chemistry control in steam generators is critical.
Every energy assessment should target the energy-related utility streams and define the impact cost of each of these utility streams. This calculation should be done using a systems approach.
Chemical companies are pursuing a variety of strategies to boost the energy efficiency of their operations. Here’s a rundown on some important initiatives and the improvements that chemical makers are achieving.
Boilers require blowdown to control the amount of dissolved and precipitated solids, to ensure reliable and efficient operation. The blowdown stream has thermal energy that can create flash steam and offer other recovery options before discharge.
A comprehensive program to assess water use at facilities worldwide and identify opportunities to save water has led to notable reductions in consumption. Here are some of the key steps taken and insights the company gained.
Natural gas turbines with steam generation can produce both electricity and heat. This first of two columns on such cogeneration looks at the heat aspects, particularly how to increase the heat recovery efficiency of the system.
Cooling towers and fin fans are essential process heat sinks that often don’t get adequate attention. Not operating them at optimum levels can impact the energy intensity, throughput and controls on the upstream process.
Hot surfaces of equipment and piping can lead to significant energy losses and pose risks of personal injury. Adding or enhancing insulation and installing refractory where appropriate can boost energy efficiency and safety.
It’s estimated that 10% of steam traps fail each year. So, annual auditing is crucial to minimize steam losses. This column covers three main methods for testing traps, and provides some tips and best practices.
New requirements for existing and new boilers as well as process heaters are prompting boiler MACT (maximum achievable control technology) compliance efforts. Here are tips for conducting energy assessments.
Chemical companies increasingly are relying on specific metrics to evaluate sustainability initiatives and to assess the overall performance of their operations. Here’s a rundown on some broadly applied metrics and their use.
The Carbon Disclosure Project released its Global Water Report 2014.
An absorption system can provide chilled water or refrigeration for processes, often by taking advantage of low-temperature heat available on the site. A number of factors influence whether an absorption system is a good fit for an application.
Sometimes during an energy analysis engineers focus on an issue that doesn’t impact the analysis much and doesn’t deserve much attention. Realizing which issues really affect the analysis is crucial for performing an efficient and effective analysis.
In continuous processes, analysis of energy-saving opportunities focuses on steady-state operation. In contrast, for batch processes, evaluation requires close attention to cycle time and understanding ramp up and ramp down of the utility and feed streams.
Many facilities can take some simple, inexpensive steps to improve sustainability. Here are some common opportunities that together may have a big impact.
A periodic energy assessment of refrigeration systems can provide some excellent value and identify low-cost or no-cost energy saving measures.
An often-overlooked issue with boilers is the risk of severe corrosion when the unit is down due to lack of steam demand or for maintenance. An electrical generating station took several widely applicable actions to prevent oxygen corrosion at such times.
Chemical manufacturers, like many industrial firms, are grappling with growing concerns over the availability, quality and cost of water. Here’s a rundown of some of important initiatives that chemical makers are undertaking to cut water consumption.
Cooling towers often don’t get adequate attention. Yet, fouling, scaling and corrosion of such towers can have significant consequences. Cooling water treatment techniques have evolved to better address the issues. Here’s a guide to best practices.
Cooling towers serve an essential function at many sites. So, they deserve — and indeed require — periodic inspection. However, the cooling towers at chemical plants pose additional risks for inspection. It’s important to know these risks beforehand.
Sharing energy to achieve savings is an attractive concept but is it really a good idea? Several attempts at implementing such sharing provide important insights about both the positive and negative aspects.
At some sites, programs to optimize water use include an explicit goal to substantially decrease or even eliminate wastewater discharge. Here’s a rundown of some major initiatives underway and the results they’ve achieved.
Plants often miss out on taking advantage of seasonal effects. Colder temperatures during winter may significantly reduce cooling water temperatures, allowing condensers to run at lower temperature and pressure.