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RHZ News

Successful Media Change Out of a 50KSCFM Durr RTO

A picture may be worth 1,000 words, but this one is worth nearly 12,000 blocks of Monolith, which is the number of blocks we handled over the course of the weekend.

Another Year: Another Record

The First VAM Site in the United States

Keeping equipment properly maintained is crucial to maintaining online operation. This is especially true of remote sites, where an unplanned shutdown has a far greater impact on a company's bottom line. For the past 27 months RHZ has been setting records, generating an average of 270,000 offsets annually. The keys are simple: Planning and Responsiveness 

Planning is Crucial. Paying careful attention to the schedules of multiple contractors and distributors, and coordinating everything results in a minimum of downtime. 

Responsiveness is a must. Regardless of how much detail goes into planning, unforeseen events will occur, whether it's a storm disrupting power, or a cylinder reaching its EOL. Being able to quickly respond is what elevates a company to the next level. It is why we're setting records month after month, and year after year. 

This attention to detail is what defines us. 

Do You Have an Obsolete PLC System?

Are you looking for the most cost effective and efficient way to upgrade?

Allen Bradley PLC2

Upgrading your Programmable Logic Controllers (PLCs) to a modern system can be overwhelming and expensive.  There are so many steps to take into account, and no transition is without its unforseen complications.  Whom do you trust to give you reliable informatio and ensure you have the least amount of down-time possible?  What system is right for you?  Are there options that would improve production and prove cost-effective in the long term, or are these bells and whistles just icing that would be wasted expenses in the long run?

Are you up to date on what systems are being discontinued by automation manufacturers?  Allen Bradley routinely posts life-cycle updates for their products, but finding out which one you have and what it's life-cycle status is can be confusing and difficult unless you know exactly what you are looking for.

We at RHZ have the experience you need  - commissioning new systems, upgrading existing PLCs for added sources or changed production practices; maintenance and custom programming to improve performance; optimization of existing programs to simplify operation or address known bugs; upgrades of complete PLC systems to modern hardware including turn-key programming solutions for your whole system, custom built for your needs.

Programming Update: Custom PLC-Based Notification Software

RHZ Environmental can now write custom software that send  out emails and text message the moment a problem occurs. Many RHZ employees receive immediate notifications if a piece of equipment we service has a problem, and daily status notifications of equipment we service on a regular basis. This gives RHZ the ability respond to issue with lightning fast speed.

Trio of Good News: Two Engineering Tests and a rebuild

This chamber was rebuilt and relinedTwo successful Engineering Tests and a Beautiful Relining: The first site had failed its previous EPA test, with an outlet concentration exceeding 6,000PPM. RHZ helped with engineering and controls modifications. The subsequent test found the average outlet VOC concentration dropped from over 6,000PPM to just over 1PPM. We also lowered the combustion chamber temperature by over 50F, which will save them over $7,000/year.  

RHZ also wrote a specialized routine which averaged the chamber temperature for each test.  Due to RHZ's skill at PID tuning, the average chamber temperature was within 0.3F of the PID's set point temperature.  The 2nd site had its engineering test yesterday. We prepped this 20 year old unit for the test a few weeks ago. It achieved a 99.97% destruction rate efficiency. This confirms RHZ's ability to achieve exceptional test results from equipment that has been in the field for decades.  The third site had falling insulation. The walls of the combustion chamber had been ravaged by years of neglect, and an entire section had to be rebuilt. This delayed our total scope of work by only Two Days.

Flash Off Managed During RTO Bake Out

A flash off is the most dangerous part of a bake out. Temperatures skyrocket, and if not understood and actively managed, can result in catastrophic structural damage.

This is a short video showing one of the chambers in a three-tower Durr RTO being baked out. This was the initial flash point for one of the towers. The cold face temperature rapidly increased by over 200°F within a few seconds. It is being controlled by a program written by RHZ Environmental. The program automatically terminated the runaway flash in its tracks. This protected the structural integrity of the chamber, meaning the million dollars worth of media, while thoroughly removing a ton of organic deposits that had plugged the media, increasing the pressure drop and gas consumption while lowering the thermal efficiency and residence time.

Enhanced Test Equipment Suite

In the past few months, RHZ has enhanced its suite of equipment aimed at analyzing and inspecting our customers' pollution abatement and other industrial processing equipment. With these enhanced capabilities, our field technicians have provided very valuable insights on the operation of a variety of critical equipment to our customers.

Thermal imaging camera

The addition of a Fluke TI400 industrial thermal inspection camera has been invaluable in finding hot spots before they become visible, and before they cause problems. It's ideal for checking electrical panels and oxidizers for hot spots, and for checking heat exchanger integrity. The Fluke uses laser-guided pinpoint focus, which is crucial for obtaining accurate temperature readings, and particularly for pinpointing problem sites.