Cement producers and the EPA

08/11/2010


You may have noticed recent announcements that cement producers will soon have to restrict emissions of mercury and other pollutants. New EPA regulations require that by 2013, cement producers collectively will reduce mercury and particulates by 92%, acid gasses by 97%, and sulfur dioxide by 78%.

This has a familiar ring to it, and it took me back to an earlier life where I paid a lot of attention to the cement industry. I worked for a company that manufactures spray nozzles that are used to cool flue gasses. If the gas coming out of your process is hotter than you want it to be, and there is no practical way to capture and reuse the heat, you can cool it by spraying in finely atomized water. The concept is simple but doing it effectively is harder than you might think.

Back in 1999, I presented a paper at the Cement Conference on EPA regulations that were coming into effect in 2000. One of rep organizations that sells the equipment still hosts the paper if you’re interested. Back then the EPA was concerned more with toxic gas formation (dioxins and furans) but it also wanted to restrict particulates and mercury for hazardous waste burning kilns. The point then and now is that proven and practical technologies exist to manage these emissions. SOx, NOx, mercury, acid gasses, toxic gasses, and heavy metals can all be controlled. (Carbon dioxide is another matter. A cement or lime kiln produces carbon dioxide because it’s part of the calcining process, regardless of the fuel used.)

Some plants may not want to add control technologies it because it will add cost. For better or worse, the cement industry managed to stay under the environmental radar for a long time, but regulations are beginning to catch up. Now as it implements new controls, production will shift around. Plants that can work with the new regulations without much trouble will benefit. Others will likely close and the balance of imports vs. domestic production may change. This isn’t the first industry to have to face such a displacement, nor will it be the last. Life will go on.



The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by Control Engineering subscribers. Vote now (if qualified)!
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
Each year, a panel of Control Engineering and Plant Engineering editors and industry expert judges select the System Integrator of the Year Award winners in three categories.
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
HMI effectiveness; Distributed I/O; Engineers' Choice Award finalists; System Integrator advice; Inside Machines
Women in engineering; Engineering Leaders Under 40; PID benefits and drawbacks; Ladder logic; Cloud computing
Robotic integration and cloud connections; SCADA and cybersecurity; Motor efficiency standards; Open- and closed-loop control; Augmented reality
Programmable logic controllers (PLCs) represent the logic (decision) part of the control loop of sense, decide, and actuate. As we know, PLCs aren’t the only option for making decisions in a control loop, but they are likely why you’re here.
This digital report explains how motion control advances and solutions can help with machine control, automated control on assembly lines, integration of robotics and automation, and machine safety.
This article collection contains several articles on how advancements in vision system designs, computing power, algorithms, optics, and communications are making machine vision more cost effective than ever before.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Control room technology innovation; Practical approaches to corrosion protection; Pipeline regulator revises quality programs
Cloud, mobility, and remote operations; SCADA and contextual mobility; Custom UPS empowering a secure pipeline
Infrastructure for natural gas expansion; Artificial lift methods; Disruptive technology and fugitive gas emissions
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
Fire & Life Safety Engineer; Technip USA Inc.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
click me