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KR-20260065620-A - Recycling methods and recycled products

KR20260065620AKR 20260065620 AKR20260065620 AKR 20260065620AKR-20260065620-A

Abstract

A specific recycling method and a recycled product obtained by said recycling method are described herein.

Inventors

  • 페이엔 마티아스
  • 조우 위안

Assignees

  • 바스프 에스이

Dates

Publication Date
20260508
Application Date
20240902
Priority Date
20230904

Claims (15)

  1. Steps below: i) a step of providing a starting material SM1 comprising one or more polymer(s) P1 and one or more contaminant(s) C-SM1; ii) a step of converting starting material SM1 to obtain chemical material CM1 containing one or more contaminant(s) C-CM1; and iii) Preferably, a step of converting chemical CM1 to obtain one or more polymer(s) P2, a polymer composition PC1 comprising one or more polymer(s) P2, and/or a polymer product PP1 comprising one or more polymer(s) P2. As a method including, In the following equation, cCM1SM1-1 is 0.7 and: cC-CM1 / cC-SM1 ≤ cCM1SM1-1 Here, cC-CM1 is the content in weight% of one or more contaminant(s) C-CM1 in chemical substance CM1; cC-SM1 is a method in which one or more contaminant(s) of C-SM1 in starting material SM1 are present in units of weight% of C-SM1.
  2. In claim 1, the method in which cCM1SM1-1 is 0.3.
  3. In paragraph 1 or 2, step ii) is the following step: iv) a step of converting starting material SM1 to obtain raw material RM1 preferably comprising one or more contaminant(s) C-RM1, and v) Step of converting raw material RM1 to obtain chemical substance CM1 Includes, and step iv) is the following step: iv') A step of obtaining raw material RM1 by depleting one or more contaminant(s) C-SM1 from starting material SM1. Includes, and step iv) or iv') is the following step(s): iv") A step of classifying starting material SM1 to obtain raw material RM1; iv"') A step of preferably (a) diluting starting material SM1 with additional waste stream(s), naphtha and/or crude oil to obtain raw material RM1; iv"") Step of extracting starting material SM1 to obtain raw material RM1 A method that includes one or more of the following.
  4. In paragraph 3, step v) is the following step(s): v') A step of obtaining chemical substance CM1 by gasifying raw material RM1; v") A step of obtaining chemical substance CM1 by depolymerizing raw material RM1; v"'-1) a step of pyrolyzing raw material RM1 to obtain raw material RM2 preferably containing one or more contaminant(s) C-RM2; v"'-2) preferably converting raw material RM2 to obtain raw material RM3 preferably comprising one or more contaminant(s) C-RM3; and/or v"'-3) A step of obtaining chemical CM1 by cracking raw material RM2 and/or raw material RM3, preferably by steam cracking and/or gasifying. A method that includes one or more of the following.
  5. In Paragraph 3 or 4, Step v) is the following step: v"'-1) A step of obtaining raw material RM2 by thermally decomposing raw material RM1; v"'-2) a step of converting raw material RM2 to obtain raw material RM3; and v"'-3) A step of decomposing raw material RM3, preferably steam decomposing and/or gasifying it to obtain chemical substance CM1. A method that includes
  6. A method according to any one of claims 1 to 5, wherein the content of one or more contaminant(s) C-SM1 in the starting material SM1 is 2.00× 10¹ weight% or more and 5.00× 10¹ weight% or less.
  7. A method according to any one of claims 1 to 6, wherein the content of starting material SM1 in chemical substance CM1 or polymer product PP1 is 5 weight% or more.
  8. A method according to any one of claims 1 to 7, wherein the content of one or more contaminant(s) C-CM1 in chemical substance CM1 and/or the content of one or more contaminant(s) C-RM3 in raw material RM3 is 5.00× 10⁻⁷ wt% or more and 1.00× 10⁰ wt% or less.
  9. A method according to any one of claims 1 to 8, wherein cCM1SM1-2 in the following formula is 1.0* 10⁻² , preferably 0.1, more preferably 0.2: cCM1SM1-2 ≤ cC-CM1 / cC-SM1.
  10. In any one of claims 1 to 9, c-SM1cCM1SM1-1 in the following formula is 1.00× 10⁻³ wt% or more and 1.00× 10⁻¹ wt% or less: c-SM1cCM1SM1-1 = cC-SM1 × cCM1SM1-3 Here, cCM1SM1-3 = cC-CM1 / cC-SM1 and; cC-CM1 is the content of one or more contaminant(s) C-CM1 in chemical substance CM1 in weight% units; cC-SM1 is a method in which one or more contaminant(s) of C-SM1 in starting material SM1 are present in units of weight% of C-SM1.
  11. A method according to any one of claims 1 to 10, wherein one or more contaminant(s) C-SM1, C-CM1, C-RM1, C-RM2 and/or C-RM3 comprise all elements except hydrogen (H) and carbon (C), preferably comprising oxygen (O), sodium (Na), iron (Fe), arsenic (As), and halogen (HAL); preferably comprising fluorine (F), chlorine (Cl), and/or bromine (Br); lead (Pb), mercury (Hg), nitrogen (N), phosphorus (P), silicon (Si), sulfur (S), vanadium (V), zinc (Zn), magnesium (Mg), aluminum (Al), and (a) mixture(s) thereof, preferably comprising, more preferably comprising.
  12. A method according to any one of claims 1 to 11, wherein one or more contaminant(s) C-SM1, C-CM1, C-RM1, C-RM2 and C-RM3 are composed of oxygen (O), nitrogen (N) and sulfur (S).
  13. A method according to any one of claims 1 to 12, wherein one or more contaminant(s) C-SM1, C-CM1, C-RM1, C-RM2 and C-RM3 are composed of nitrogen (N).
  14. In any one of paragraphs 1 through 13, Step ii) is the following step: iv) a step of converting starting material SM1 to obtain raw material RM1, and v) Step of converting raw material RM1 to obtain chemical substance CM1 Includes, and step v) is the following step: v"'-1) A step of thermally decomposing raw material RM1 to obtain raw material RM2 containing one or more contaminant(s) C-RM2; v"'-2) converting raw material RM2 to obtain raw material RM3 containing one or more contaminant(s) C-RM3; and v"'-3) A step of decomposing raw material RM3, preferably steam decomposing and/or gasifying it to obtain chemical substance CM1. Comprising, one or more contaminant(s) C-SM1, C-CM1, C-RM1, C-RM2 and C-RM3 comprise oxygen (O), nitrogen (N) and sulfur (S), preferably composed thereof; In the following formula, c1RM3RM2-1 is 0.9 and: c1C-RM3 / c1C-RM2 ≤ c1RM3RM2-1 Here, c1C-RM2 is the content of oxygen (O), nitrogen (N), and sulfur (S) in weight percent units in raw material RM2; c1C-RM3 is a method in which the content of oxygen (O), nitrogen (N), and sulfur (S) in weight percent of raw material RM3 is.
  15. In any one of paragraphs 1 through 14, step ii) is the following step: iv) a step of converting starting material SM1 to obtain raw material RM1, and v) Step of converting raw material RM1 to obtain chemical substance CM1 Includes, and step v) is the following step: v"'-1) A step of thermally decomposing raw material RM1 to obtain raw material RM2 containing one or more contaminant(s) C-RM2; v"'-2) converting raw material RM2 to obtain raw material RM3 containing one or more contaminant(s) C-RM3; and v"'-3) A step of decomposing raw material RM3, preferably steam decomposing and/or gasifying it to obtain chemical substance CM1. Comprising, one or more contaminant(s) C-SM1, C-CM1, C-RM1, C-RM2 and C-RM3 comprise nitrogen (N), preferably composed thereof; In the following formula, cNRM3RM2-1 is 0.7 and: cNC-RM3 / cNC-RM2 ≤ cNRM3RM2-1 Here, cNC-RM2 is the content of nitrogen (N) in weight% units in raw material RM2; cNC-RM3 is a method in which the content of nitrogen (N) in weight% of raw material RM3 is.

Description

Recycling methods and recycled products Waste containing organic materials, such as polymers, can be recycled by various methods, such as gasification, to obtain chemicals such as small molecules or monomers. The chemicals obtained from these recycling processes can be used to produce recycled products, such as recycled polymer products. Even if certain waste contains large amounts of desirable carbon and hydrogen, compared to fossil feedstocks, waste often also contains significant amounts of contaminants, such as halogenated organic compounds, salts, or metals. These contaminants, particularly volatile ones, migrate along the recycling process, shortening the maintenance cycle of the recycling plant, damaging or even completely destroying the plant, and ultimately remaining in the obtained chemicals. When present in recycled chemicals, separating contaminants from them is very complex, and in some cases, the separation effort outweighs the benefits of the recycled chemicals. However, the presence of contaminants in recycled chemicals can damage mechanical parts, for example, through corrosion. Consequently, contaminants in the chemicals can cause serious damage to downstream production plant(s), from which, for example, new polymers and/or polymer compositions are produced. Furthermore, contaminants can cause undesirable side effects in downstream chemical conversion processes, resulting in recycled end products containing byproducts; additionally, contaminants can be irreversibly embedded in the recycled products. Consequently, recycled products may become unusable. However, the extent of contaminant depletion at recycling plants required to obtain high-quality recycled chemicals has not yet been sufficiently studied. Accordingly, the object of the present invention is to provide an improved method, and in particular, the method herein is - Indicates and/or indicates improved protection of the recycling plant(s); - Provides improved chemicals and/or; - Providing chemicals suitable for downstream processes and/or; - Achieve a higher yield. By the specific method described herein, an improved chemical is obtained, which can be further converted into a polymer composition and a product. Accordingly, a further object of the present invention is to provide an improved recycled chemical, a polymer, a polymer composition and/or a polymer product, in particular the chemical, the polymer, the polymer composition and/or the polymer product - Protect downstream production plant(s) and/or; - Having high quality/or having; - Having/or having improved sustainability; - Having a high recycling content; - Has/has improved recyclability. The above objective is preferably achieved in the following order: i) a step of providing a starting material SM1 comprising one or more polymer(s) P1 and one or more contaminant(s) C-SM1; ii) a step of converting starting material SM1 to obtain chemical material CM1 containing one or more contaminant(s) C-CM1; and iii) Preferably, a step of converting chemical CM1 to obtain one or more polymer(s) P2, a polymer composition PC1 comprising one or more polymer(s) P2, and/or a polymer product PP1 comprising one or more polymer(s) P2. A method comprising, preferably formed by, In the following equation, cCM1SM1-1 is 0.7 and: cC-CM1 / cC-SM1 ≤ cCM1SM1-1 Here, cC-CM1 is the content in weight% of one or more contaminant(s) C-CM1 in chemical substance CM1; cC-SM1 is at least partially resolved by a method in which one or more contaminant(s) in the starting material SM1 are present in the weight% content of c-SM1. When the parameter cCM1SM1-1 is 0.7 or less, the method provides an improved chemical and a chemical suitable for a downstream process. In a preferred embodiment, step ii) comprises the following steps: iv) a step of converting starting material SM1 to obtain raw material RM1 preferably comprising one or more contaminant(s) C-RM1, and v) A step of converting raw material RM1 to obtain chemical substance CM1. In a preferred embodiment, step iv) comprises the following steps: iv') A step of obtaining raw material RM1 by depleting one or more contaminant(s) C-SM1 from starting material SM1. The inventors recognized that when one or more contaminant(s) C-SM1 in starting material SM1 are first depleted to obtain raw material RM1, the raw material RM1 is subsequently converted to obtain chemical CM1, the protection of the recycling plant(s) that recycle the raw material is improved, and the maintenance cycle of the recycling plant is extended. In a preferred embodiment, step iv) or iv') comprises one or more of the following step(s): iv") A step of classifying starting material SM1 to obtain raw material RM1; iv"') A step of preferably (a) diluting starting material SM1 with additional waste stream(s), naphtha and/or crude oil to obtain raw material RM1; iv"") Step of obtaining raw material RM1 by extracting starting material SM1, preferably solvent extraction and/or polar extraction. In a pre