Mark J. Costa
Chairman and Chief Executive Officer at Eastman Chemical
Sure, and good morning, everyone. Love to talk about where we are with methanolysis plant. I'm going to give a little context of the journey we've been on and then answer that specific feedstock question. We're very excited to be operational with the world's largest chemical recycling facility and we've made tremendous progress on this project and really showing what's possible in the world when it comes to recycled content and dealing with this challenge that we face.
We are very excited that we're making on spec plastic from the output of this facility. We've actually produced on spec food grade Tritan with 75% RDMT, and that's the most difficult product we have to make the highest standards on clarity, a wide range of performance specs, and we're making these products with no materials of concern getting through the purification process. So a very safe product from garbage. And that's an incredible accomplishment and a great job by our team in operating this plant and overcoming a series of challenges.
We have had a lot of successes. As I said, we're making on spec product now. We are doing all of this with hard to recycle waste. Mechanical recyclers can't take back the food grade and send a landfill. We validated all of the unit ops and they can run at very high rates. We've had, as I mentioned, sustained rates in our prepared remarks of around 70% when you're running all the units together, and there's been one sort of small mechanical thing limiting us getting to 100%. And we just recently made the change this week actually, in fixing that one mechanical issue, and we're ramping up to full rates.
We have made a lot of progress on improving the mechanical reliability issues that we were facing in the startup of the process that we shared with you in the first quarter call. So when we took a variety of corrective actions on the early failures around instrumentation, valves, rotating equipment, especially pumps, that has been effective, and we've seen much higher reliability across the plant. So, as you said, the next step, as we're now moving to higher rates and a broader set of hard to recycle feedstock, we encountered some plugging issues.
So, to be clear, from the beginning of this process we've been using hard to recycle material that can't be made back into food grade bottles mechanically, true to our strategy of dealing with this waste that doesn't have an alternative life. But we've been broadening that spectrum of different types of HTR recently, and we encountered some plugging issues in the front of the plant. I want to be clear that this is not about chemical impurities, it's not about process chemistry. It took us a few weeks to really understand what was going on, but we realized that it was in the feedstock preparation and some of the fitness for use aspects of a few sources of material.
Fortunately, the issues were relatively straightforward to address once we understood them, which just involves sort of optimizing sort of the feedstock form that we're using and dealing with some of the non-polymer waste that was in a few select sources of feedstock. So we have now implemented all those changes. We're ramping up, as I said, with the change also run at full rates and are confident all these changes will be effective and we'll be running very hard with the facility as we go through Q3 and Q4.
The thing I would note is, this has been a journey. This is an incredibly complex plant to take garbage and turn it into clear on spec polymer that doesn't have any materials of concern that can exist in that waste feedstock. So we've made a lot of investments in purification and how to manage all these different feedstocks, and we've learned a lot over the last five months -- six months of startup that I think is a huge competitive advantage for us. And frankly, there's a lot of strategic intellectual property we're gathering through this process.
As I look back on it, I just can't reinforce enough, the power and success of our team in enabling us to have this kind of success. I can't even imagine trying to build these kind of technologies and plants without the depth of technical expertise and the scale we have to throw at these kind of challenges. So great shout out to the team in overcoming these things. We're feeling very good about how we're moving forward and excited to sort of serve customers as we ramp up volumes in the back half of the year.