Plastics Recycling

C&EN has article in the May 16 issue listing seven companies working on recycling plastics. Here’s a summary of their technology. Most are pyrolyzing plastics to oils suitable for refining mostly for fuels, waxes or possibly reuse in plastics. Reuters surveyed 30 projects and found most shut down. I suspect the economics are unattractive. Products are not valuable enough.

The best–

Eastman Chemicals methanolysis of PET to make ethylene glycol and dimethyl terephthalate. They also have CRT technology converting plastics to synthesis gas in their coal to methanol plant, then to acetic acid, then to cellulose acetate plastics. Might be viable.

Exxon Mobil has big recycling operation under construction in Baytown, TX. Might work. Hard to know. Could be for public relations.

Styrene monomer might be valuable enough to make polystyrene pyrolysis practical. Agilyx in Oregon seems a poor location but maybe a pilot facility.

Progress seems slow, but some plastic recycling could work out.


C&EN lists the following as companies turning recycled plastics into building blocks for new plastics. The list comes from the American Chemical Council.

Agilyx, Tigard, OR. Polystyrene pyrolysis to recover monomer to make new plastic. Recovered styrene monomer shipped to St. James, LA plant of REGENYX for polymerization. 14 partners including Exxon, Kroger, Mitsubishi

Alterra Energy, Akron, OH thermochemical liquefaction process technology, which transforms plastic destined for landfills back into petrochemical products that can be further refined. Makes pyrolysis oil suitable for refining into fuels, waxes, and maybe plastics. 60 ton per day plant opened 2020.

Braven Environmental, Zebulon, NC Pyrolysis of 1,2,4,5,6,7 plastic makes oil suitable for fuel and possibly new plastics. Main office Yonkers, NY. Partners with Chevron.

Eastman Chemical, Kingsport, TN. Methanolysis of PET to recover ethylene glycol and dimethyl terephthalate. Also CRT technology to convert plastics to syn gas in their coal to methanol plant then to acetic acid and on to cellulose acetate products. https://www.eastman.com/Company/Circular-Economy/Resources/D…

ExxonMobil, Baytown, TX ExxonMobil plans to build its first, large-scale plastic waste advanced recycling facility in Baytown, Texas, and is expected to start operations by year-end 2022.

New Hope Energy, Tyler, TX Pyrolysis oil partnering with Dow for processing into plastics. Using Lummus technology.

Nexus Circular, Atlanta, GA HDPE, LDPE, PP and PS. Pyrolysis produces oil suitable for use in plastics. Shell and Chevron partner.

Reuters examined 30 projects by two-dozen advanced recycling companies across three continents and found most have closed down or are far behind schedule. https://www.reuters.com/world/us/brightmark-georgia-county-c…

https://www.reuters.com/investigates/special-report/environm… Most ventures shutting down.

3 Likes

Reuters surveyed 30 projects and found most shut down. I suspect the economics are unattractive.

Several years ago I read an energy analysis of recycling various materials. Things such a paper and metals made sense, plastics did not.

On a side note, the Fool search engine used to be lame. Now they seem to have disappeared it altogether. Does anybody know where it went?

DB2

The best solution to the plastics problem is probably incineration with recovery of energy. But also more use of easily recycled plastics and biodegradable materials.

Metals do have the advantage that most are easy to recycle.

But much can be done with natural materials like starch, paper and cellulose.

2 Likes