JPWO2021133875A5

JPWO2021133875A5 -

Info

Publication number: JPWO2021133875A5
Application number: JP2022538704A
Authority: JP
Publication date: 2023-11-01

Description

本明細書で参照されるすべての特許及び刊行物は、本明細書と矛盾しない範囲で参照により本明細書に組み込まれる。上記の実施形態の特定の上記の構造、機能、及び操作は、本発明を実施するために必要ではなく、単に例示的な実施形態又は複数の実施形態を完全にするために説明に含まれることが理解されよう。さらに、上記の参照された特許及び刊行物に記載されている特定の構造、機能、及び操作は、本発明と組み合わせて実施することができるが、それらはその実施に必須ではないことが理解されよう。したがって、本発明は、添付の特許請求の範囲によって定義される本発明の精神及び範囲から実際に逸脱することなく、具体的に説明されるように実施され得ることが理解されるべきである。
本願の出願当初の特許請求の範囲に係る発明の内容は、以下の通りである。
［項１］
廃プラスチックを、ポリエチレン重合のためのナフサに変換するための連続プロセスであって、
（ａ）ポリエチレン及び／又はポリプロピレンを含む廃プラスチックを選択する工程、
（ｂ）（ａ）からの前記廃プラスチックを、熱分解反応器に通して、ポリオレフィン廃棄物の少なくとも一部を熱的に分解し、熱分解された流出物を生成する工程、
（ｃ）前記熱分解された流出物を、オフガス、熱分解油及び任意選択で熱分解ワックス（ナフサ／ディーゼル留分及び重質留分を含む）、並びにチャーに分離する工程、
（ｄ）前記熱分解油及びワックスを、精製所の粗製ユニットに通す工程、
（ｅ）粗製ユニットから、ナフサ留分（Ｃ _５－Ｃ _８）を回収する工程、
（ｆ）前記ナフサ留分を、エチレン製造用にスチームクラッカーに通す工程、
を含む、上記プロセス。
［項２］
（ｃ）の熱分解油及びワックスを、精製所・粗製ユニットに直接通し、汚染物質が粗製ユニット脱塩装置で除去される、項１に記載のプロセス。
［項３］
汚染物質が、熱分解サイトで除去される、項１に記載のプロセス。
［項４］
（ｆ）で製造したエチレンを、その後、重合する、項１に記載のプロセス。
［項５］
ポリエチレン生成物が、重合されたエチレンから調製される、項４に記載のプロセス。
［項６］
重質ナフサ／ディーゼル／常圧軽油が、粗製ユニットから回収され、精製所において清浄なガソリン、ディーゼル、又はジェット燃料へとさらに処理される、項１に記載のプロセス。
［項７］
前記粗製ユニットによって処理される未使用の粗製油の量が、リサイクルされた熱分解油で減少する、項６に記載のプロセス。
［項８］
（ａ）で選択された廃プラスチックが、プラスチック分類グループ２、４、及び／又は５からのものである、項１に記載のプロセス。
［項９］
精製所の粗製ユニットへと流れる熱分解油及びワックスの体積流量が、粗製ユニットへと流れる炭化水素の総流量の最大５０体積％を構成する、項１に記載のプロセス。
［項１０］
前記熱分解油及びワックスの流量が、最大約２０体積％を構成する、項９に記載のプロセス。
［項１１］
廃プラスチックを、ポリエチレン重合のためのＣ _３－Ｃ _４流に変換するための連続プロセスであって、
（ａ）ポリエチレン及び／又はポリプロピレンを含む廃プラスチックを選択する工程、
（ｂ）（ａ）からの前記廃プラスチックを、熱分解反応器に通して、ポリオレフィン廃棄物の少なくとも一部を熱的に分解し、熱分解された流出物を生成する工程、
（ｃ）前記熱分解された流出物を、オフガス、熱分解油及び任意選択でワックス（ナフサ／ディーゼル留分及び重質留分を含む）、並びにチャーに分離する工程、
（ｄ）前記熱分解油を、精製所の粗製ユニットに通す工程、
（ｅ）粗製ユニットから、プロパン及びブタン（Ｃ _３－Ｃ _４）留分の一部を回収する工程、
（ｆ）前記（Ｃ _３－Ｃ _４）留分を、エチレン製造用にスチームクラッカーに通す工程、
を含む、上記プロセス。
［項１２］
（ｃ）の熱分解油及びワックスを、精製所・粗製ユニットに直接通し、汚染物質が粗製ユニット脱塩装置で除去される、項１１に記載のプロセス。
［項１３］
汚染物質が、熱分解サイトで除去される、項１１に記載のプロセス。
［項１４］
（ｆ）で製造したエチレンを、その後、重合する、項１１に記載のプロセス。
［項１５］
ポリエチレン生成物が、重合されたエチレンから調製される、項１１に記載のプロセス。
［項１６］
重質ナフサ／ディーゼル／常圧軽油が、粗製ユニットから回収され、精製所において清浄なガソリン、ディーゼル、又はジェット燃料へとさらに処理される、項１１に記載のプロセス。
［項１７］
精製所の粗製ユニットへと流れる熱分解油及びワックスの体積流量が、粗製ユニットへと流れる炭化水素の総流量の最大５０体積％を構成する、項１１に記載のプロセス。
［項１８］
前記熱分解油及びワックスの流量が、最大２０体積％を構成する、項１７に記載のプロセス。
［項１９］
（ａ）で選択された廃プラスチックが、プラスチック分類グループ２、４、及び／又は５からのものである、項１１に記載のプロセス。
［項２０］
廃プラスチックを、ポリエチレンの調製に有用な化学物質に変換するためのプロセスであって、
（ａ）ポリエチレン及び／又はポリプロピレンを含む廃プラスチックを選択する工程、
（ｂ）前記廃プラスチックを熱分解し、熱分解油及びワックス（ナフサ／ディーゼル／重質留分を含む）を回収する工程、
（ｃ）前記熱分解油を、精製所の粗製ユニットに通す工程、
を含む、上記プロセス。 All patents and publications referred to herein are herein incorporated by reference to the extent not inconsistent with this specification. Certain of the above-described structures, functions, and operations of the above-described embodiments are not necessary to practice the invention and are included in the description merely to complete the exemplary embodiment or embodiments. will be understood. Additionally, it is understood that while the specific structures, features, and operations described in the above-referenced patents and publications may be practiced in combination with the present invention, they are not essential to its practice. Good morning. It is therefore to be understood that the invention may be practiced as specifically described without departing from the spirit and scope of the invention as defined by the appended claims.
The content of the claimed invention as originally filed is as follows.
[Section 1]
A continuous process for converting waste plastics into naphtha for polyethylene polymerization, the process comprising:
(a) selecting waste plastics containing polyethylene and/or polypropylene;
(b) passing the waste plastic from (a) through a pyrolysis reactor to thermally decompose at least a portion of the polyolefin waste and produce a pyrolyzed effluent;
(c) separating the pyrolyzed effluent into off-gas, pyrolysis oil and optionally pyrolysis wax (including naphtha/diesel fraction and heavy fraction), and char;
(d) passing the pyrolysis oil and wax to a crude unit of a refinery;
(e) recovering a naphtha fraction (C ₅ -C ₈ ) from the crude unit;
(f) passing the naphtha fraction through a steam cracker for ethylene production;
The above process, including:
[Section 2]
The process of paragraph 1, wherein the pyrolysis oil and wax of (c) is passed directly to a refinery/crude unit and contaminants are removed in a crude unit desalter.
[Section 3]
2. The process of paragraph 1, wherein the contaminants are removed at a pyrolysis site.
[Section 4]
The process according to item 1, wherein the ethylene produced in (f) is then polymerized.
[Section 5]
5. The process of paragraph 4, wherein the polyethylene product is prepared from polymerized ethylene.
[Section 6]
2. The process of paragraph 1, wherein heavy naphtha/diesel/atmospheric gas oil is recovered from the crude unit and further processed into clean gasoline, diesel, or jet fuel in a refinery.
[Section 7]
7. The process of paragraph 6, wherein the amount of unused crude oil processed by the crude unit is reduced with recycled pyrolysis oil.
[Section 8]
Process according to paragraph 1, wherein the waste plastic selected in (a) is from plastic classification groups 2, 4 and/or 5.
[Section 9]
2. The process of paragraph 1, wherein the volumetric flow rate of pyrolysis oil and wax flowing to the crude unit of the refinery constitutes up to 50% by volume of the total flow rate of hydrocarbons flowing to the crude unit.
[Section 10]
10. The process of clause 9, wherein the flow rate of the pyrolysis oil and wax comprises up to about 20% by volume.
[Section 11]
A continuous process for converting waste plastics into a C3-C4 stream _for polyethylene _{polymerization} , the process comprising:
(a) selecting waste plastics containing polyethylene and/or polypropylene;
(b) passing the waste plastic from (a) through a pyrolysis reactor to thermally decompose at least a portion of the polyolefin waste and produce a pyrolyzed effluent;
(c) separating the pyrolyzed effluent into off-gas, pyrolysis oil and optionally wax (including naphtha/diesel fraction and heavy fraction), and char;
(d) passing the pyrolysis oil through a crude unit of a refinery;
(e) recovering a portion of the propane and butane (C ₃ -C ₄ ) fractions from the crude unit ;
(f) passing the (C ₃ -C ₄ ) fraction through a steam cracker for ethylene production;
The above process, including:
[Section 12]
12. The process of paragraph 11, wherein the pyrolysis oil and wax of (c) is passed directly to a refinery/crude unit and contaminants are removed in a crude unit desalter.
[Section 13]
12. The process of paragraph 11, wherein the contaminants are removed at a pyrolysis site.
[Section 14]
12. The process according to item 11, wherein the ethylene produced in (f) is then polymerized.
[Section 15]
12. The process of paragraph 11, wherein the polyethylene product is prepared from polymerized ethylene.
[Section 16]
12. The process of paragraph 11, wherein heavy naphtha/diesel/atmospheric gas oil is recovered from the crude unit and further processed into clean gasoline, diesel, or jet fuel in a refinery.
[Section 17]
12. The process of paragraph 11, wherein the volumetric flow rate of pyrolysis oil and wax flowing to the crude unit of the refinery constitutes up to 50% by volume of the total flow rate of hydrocarbons flowing to the crude unit.
[Section 18]
18. The process of paragraph 17, wherein the flow rate of the pyrolysis oil and wax constitutes up to 20% by volume.
[Section 19]
12. The process according to paragraph 11, wherein the waste plastic selected in (a) is from plastic classification groups 2, 4, and/or 5.
[Section 20]
A process for converting waste plastics into chemicals useful in the preparation of polyethylene, the process comprising:
(a) selecting waste plastics containing polyethylene and/or polypropylene;
(b) pyrolyzing the waste plastic and recovering pyrolysis oil and wax (including naphtha/diesel/heavy fraction);
(c) passing the pyrolysis oil through a crude unit of a refinery;
The above process, including:

Claims

A continuous process for converting waste plastics into naphtha for polyethylene polymerization, the process comprising:
(a) selecting waste plastics containing polyethylene and/or polypropylene;
(b) passing the waste plastic from (a) through a pyrolysis reactor to thermally decompose at least a portion of the polyolefin waste and produce a pyrolyzed effluent;
(c) separating the pyrolyzed effluent into off-gas, pyrolysis oil and optionally pyrolysis wax (including naphtha/diesel fraction and heavy fraction), and char;
(d) passing the pyrolysis oil and wax to a crude unit of a refinery;
(e) recovering a naphtha fraction (C ₅ -C ₈ ) from the crude unit;
(f) passing the naphtha fraction through a steam cracker for ethylene production;
The above process, including:

2. The process of claim 1, wherein the pyrolysis oil and wax of (c) is passed directly to a refinery/crude unit and contaminants are removed in a crude unit desalter.

2. The process of claim 1, wherein contaminants are removed at a pyrolysis site.

2. The process of claim 1, wherein the ethylene produced in (f) is then polymerized to produce polymerized ethylene, and a polyethylene product is prepared from the polymerized ethylene .

2. The process of claim 1, wherein heavy naphtha/diesel/atmospheric gas oil is recovered from the crude unit and further processed into clean gasoline, diesel, or jet fuel in a refinery.

2. A process according to claim 1, wherein the waste plastic selected in (a) is from plastic classification groups 2, 4 and/or 5.

The volumetric flow rate of pyrolysis oils and waxes flowing to the crude unit of the refinery constitutes up to 50% by volume of the total flow rate of hydrocarbons flowing to the crude unit, or the volumetric flow rate of pyrolysis oils and waxes flowing to the crude unit 2. The process of claim 1 , comprising up to 20% by volume of the total flow of hydrocarbons flowing into the unit .

A continuous process for converting waste plastics into a _C3 - _C4 stream for polyethylene polymerization, the process comprising:
(a) selecting waste plastics containing polyethylene and/or polypropylene;
(b) passing the waste plastic from (a) through a pyrolysis reactor to thermally decompose at least a portion of the polyolefin waste and produce a pyrolyzed effluent;
(c) separating the pyrolyzed effluent into off-gas, pyrolysis oil and optionally wax (including naphtha/diesel fraction and heavy fraction), and char;
(d) passing the pyrolysis oil through a crude unit of a refinery;
(e) recovering a portion of the propane and butane (C ₃ -C ₄ ) fractions from the crude unit;
(f) passing the (C ₃ -C ₄ ) fraction through a steam cracker for ethylene production;
The above process, including:

9. The process of claim 8 , wherein the pyrolysis oil and wax of (c) is passed directly to a refinery crude unit and contaminants are removed in a crude unit desalter.

9. The process of claim 8 , wherein contaminants are removed at a pyrolysis site.

9. The process of claim 8 , wherein the ethylene produced in (f) is then polymerized to produce polymerized ethylene, and a polyethylene product is prepared from the polymerized ethylene .

9. The process of claim 8 , wherein heavy naphtha/diesel/atmospheric gas oil is recovered from the crude unit and further processed into clean gasoline, diesel, or jet fuel in a refinery.

The volumetric flow rate of pyrolysis oils and waxes flowing to the cruder unit of the refinery constitutes up to 50% by volume of the total flow rate of hydrocarbons flowing to the cruder unit, or the volumetric flow rate of pyrolysis oils and waxes flowing to the cruder unit 9. The process of claim 8 , wherein the volumetric flow rate constitutes at most 20% by volume of the total flow rate of hydrocarbons flowing to the crude unit of the refinery .

9. A process according to claim 8 , wherein the waste plastic selected in (a) is from plastic classification groups 2, 4 and/or 5.

A process for converting waste plastics into chemicals useful in the preparation of polyethylene, the process comprising:
(a) selecting waste plastics containing polyethylene and/or polypropylene;
(b) pyrolyzing the waste plastic and recovering pyrolysis oil and wax (including naphtha/diesel/heavy fraction);
(c) passing said pyrolysis oil and wax to a crude unit of a refinery, wherein the volumetric flow rate of the pyrolysis oil and wax is at most 50% by volume of the total flow rate of hydrocarbons flowing to the crude unit of the refinery; The processes that make up the
The above process, including: