Polymers, articles, and chemicals made from high concentrated recycle derived syngas
AssigneeEastman Chemical Company
InventorsWilliam Lewis Trapp, Justin William Murphy, Nathan Mitchell West
Life of this patent
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Abstract
High concentrations of recycle polymer are gasified in a partial oxidation gasifier to make a syngas useful to make a variety of chemicals and polymers, such as cellulose ester. Polymers such as cellulose esters can be made that are obtained from sustainable sources, recycle sources, and are biodegradable. Circularity in the manufacture of textiles and/or plastics made from the fibers of such cellulose esters can now be achieved. The process of making such a syngas from high concentrations of recycle polymer (e.g. textiles and/or plastics) includes campaigning for the production of syngas.
Claims20
A process for making a high concentrated recycle derived material comprising:
- a. making a first syngas in a gasifier in a first gasification process by gasifying a first feedstock that comprises solid fossil fuel;
- b. making a second high concentrated recycle derived syngas in said gasifier in a second gasification process by gasifying a second feedstock that comprises solid fossil fuel and Recycle Polymer;
- C. using at least a portion of the second high concentrated recycle derived syngas as a feedstock in a reaction scheme to produce at least one high concentrated recycle derived material;
- wherein said second feedstock contains Recycle Polymer in an amount that is higher than the amount of Recycle Polymer used, if any, in a first feedstock;
- and
- wherein the amount of CO2 generated in the second gasification process is no more than 20% greater than the amount of CO2 generated in the first gasification process.
An integrated process for preparing a high concentrated recycle derived cellulose ester comprising:
- a. making a first syngas in a gasifier in a first gasification process by gasifying a first feedstock that comprises solid fossil fuel;
- b. making a second high concentrated recycle derived syngas in said gasifier in a second gasification process by gasifying a second feedstock that comprises solid fossil fuel and Recycle Polymer;
- c. using at least a portion of the second high concentrated recycle derived syngas as a feedstock in a reaction scheme to produce at least one high concentrated recycle derived chemical intermediate;
- d. reacting said high concentrated recycle derived chemical intermediate in a reaction scheme to prepare at least one high concentrated recycle derived cellulose reactant as a raw material for preparing a high concentrated recycle derived cellulose ester, and/or selecting said high concentrated recycle derived chemical intermediate to be at least one high concentrated recycle derived cellulose reactant for preparing a high concentrated recycle derived cellulose ester;
- and
- e. reacting said at least one high concentrated recycle derived cellulose reactant to prepare said high concentrated recycle derived cellulose ester;
- wherein said second feedstock contains Recycle Polymer in an amount that is higher than the amount of Recycle Polymer used, if any, in a first feedstock;
- and
- wherein the amount of CO2 generated in the second gasification process is no more than 20% greater than the amount of CO2 generated in the first gasification process.
Dependencies are inferred from the claim text.