JP2021529849A - リグニン粒子を製造するためのプロセス - Google Patents
リグニン粒子を製造するためのプロセス Download PDFInfo
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- JP2021529849A JP2021529849A JP2020571442A JP2020571442A JP2021529849A JP 2021529849 A JP2021529849 A JP 2021529849A JP 2020571442 A JP2020571442 A JP 2020571442A JP 2020571442 A JP2020571442 A JP 2020571442A JP 2021529849 A JP2021529849 A JP 2021529849A
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- Prior art keywords
- lignin
- precipitant
- less
- containing solution
- particle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H6/00—Macromolecular compounds derived from lignin, e.g. tannins, humic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/14—Powdering or granulating by precipitation from solutions
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07G—COMPOUNDS OF UNKNOWN CONSTITUTION
- C07G1/00—Lignin; Lignin derivatives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/005—Lignin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2397/00—Characterised by the use of lignin-containing materials
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Compounds Of Unknown Constitution (AREA)
Abstract
Description
緒言
実験部分材料
オルガノソルブ前処理
沈殿物
実験デザイン
特性評価
結果および考察沈殿剤/オルガノソルブ抽出物の比率
粒子サイズ
収率
炭水化物不純物
結論
Claims (28)
- 連続プロセスの文脈でリグニン粒子を製造するためのプロセスであって、粒子を含まないリグニン含有溶液と沈殿剤とがミキサ内で組み合わされ、次に前記ミキサから再び排出され、少なくとも90%の前記リグニン含有溶液と前記沈殿剤との混合品質およびリグニン粒子の沈殿が達成され、その結果、リグニン粒子の懸濁液が得られ、
前記ミキサ内の滞留時間が5秒以下である、プロセス。 - 連続プロセスの文脈でリグニン粒子を製造するためのプロセスであって、粒子を含まないリグニン含有溶液と沈殿剤とが混合デバイス内で組み合わされ、その後、前記混合デバイスから再び排出され、少なくとも90%の前記リグニン含有溶液と前記沈殿剤との混合品質およびリグニン粒子の沈殿が達成され、その結果、リグニン粒子の懸濁液が得られ、前記混合デバイスは、少なくとも1つのミキサと、前記ミキサから延在する10mm以下の直径を有するラインと、を含み、前記混合デバイス内での滞留時間が30秒以下である、プロセス。
- 前記ミキサ内の前記滞留時間が4秒以下、好ましくは3秒、さらにより好ましくは2秒、特に1秒である、請求項1に記載のプロセス。
- 前記混合デバイス内の前記滞留時間が25秒以下、好ましくは20秒、特に15秒である、請求項2に記載のプロセス。
- 前記ミキサがスタティックミキサ、ダイナミックミキサまたはそれらの組み合わせから選択される、請求項1〜4のいずれか一項に記載のプロセス。
- 前記粒子を含まないリグニン含有溶液が、少なくとも1つの有機溶媒および水、または少なくとも1つの有機溶媒を含む、請求項1〜5のいずれか一項に記載のプロセス。
- 前記粒子を含まないリグニン含有溶液が、クラフトリグニン(KL)プロセス、ソーダリグニンプロセス、リグノスルホン酸塩(LS)プロセス、オルガノソルブリグニン(OS)プロセス、蒸気爆発リグニンプロセス、熱水プロセス、アンモニア爆発プロセス、超臨界CO2プロセス、酸プロセス、イオン液体プロセス、生物学的プロセス、または酵素加水分解リグニン(EHL)プロセスによって得られる、請求項1〜6のいずれか一項に記載のプロセス。
- 前記沈殿剤は、水、または希釈酸、好ましくは硫酸、リン酸、硝酸、または有機酸、特にギ酸、酢酸、プロピオン酸もしくは酪酸、またはCO2、または希釈水酸化ナトリウム、好ましくは苛性ソーダまたは水酸化カリウムであることを特徴として、特に沈殿剤として水が好ましい、請求項1〜7のいずれか一項に記載のプロセス。
- 前記沈殿剤が溶液であり、前記沈殿剤の体積が前記リグニン含有溶液の体積の少なくとも0.5倍、好ましくは少なくとも2倍、特に少なくとも5倍である、請求項1〜8のいずれか一項に記載のプロセス。
- 前記沈殿剤が溶液であり、前記沈殿剤の体積が、前記リグニン含有溶液の体積の1〜20倍、好ましくは1.5〜10倍、特に2〜10倍である、請求項1〜9のいずれか一項に記載のプロセス。
- 前記沈殿剤のpHが2〜12、好ましくは3〜11、特に4〜8の範囲にある、請求項1〜10のいずれか一項に記載のプロセス。
- リグニン粒子の前記懸濁液のpHが2〜12、好ましくは3〜11、特に4〜8の範囲にある、請求項1〜11のいずれか一項に記載のプロセス。
- 混合デバイスにおいて、少なくとも95%の前記リグニン含有溶液と前記沈殿剤との混合品質が達成される、請求項1〜12のいずれか一項に記載のプロセス。
- 前記粒子を含まないリグニン含有溶液が有機溶媒、好ましくはアルコール、ケトンまたはTHFを含み、特に水との混合物中においてエタノールが特に好ましい、請求項1〜13のいずれか一項に記載のプロセス。
- 前記粒子を含まないリグニン含有溶液が有機溶媒、好ましくは、特にメタノール、エタノール、プロパノール、ブタノール、ペンタノール、エタン−1,2−ジオール、プロパン1,2−ジオール、プロパン−1,2,3−トリオール、ブタン−1,2,3,4−テトラオールおよびペンタン−1,2,3,4,5−ペントールからなる群から選択されるC1〜C5のアルコール、またはアセトンおよび2−ブタノンから選択されるケトンを含む、請求項1〜14のいずれか一項に記載のプロセス。
- 前記沈殿が、0〜100℃、好ましくは5〜80℃、さらにより好ましくは10〜60℃、さらにより好ましくは15〜50℃、さらにより好ましくは20〜30℃の温度で行われる、請求項1〜15のいずれか一項に記載のプロセス。
- 前記粒子を含まないリグニン含有溶液が、1リットルあたり0.1〜50gのリグニン、好ましくは0.5〜40g/L、さらにより好ましくは1〜30g/L、さらにより好ましくは2〜20g/Lの量のリグニンを含む、請求項1〜16のいずれか一項に記載のプロセス。
- 前記ミキサまたは混合デバイスからのリグニン粒子の前記懸濁液が懸濁液容器に導入される、請求項1〜17のいずれか一項に記載のプロセス。
- 前記粒子を含まないリグニン含有溶液が、10〜90重量%、好ましくは20〜80重量%、さらにより好ましくは30〜70重量%、さらにより好ましくは40〜60重量%、さらにより好ましくは50〜65重量%の量の有機溶媒を含む、請求項1〜18のいずれか一項に記載のプロセス。
- 前記粒子を含まないリグニン含有溶液が、100〜230℃、好ましくは120〜230℃、さらにより好ましくは140〜210℃、さらにより好ましくは150〜200℃、さらにより好ましくは160〜200℃、さらにより好ましくは170〜200℃、さらにより好ましくは170〜195℃、さらにより好ましくは、175〜190℃である温度でリグニン含有出発物質を抽出することによって得られる、請求項1〜19のいずれか一項に記載のプロセス。
- 前記粒子を含まないリグニン含有溶液が、1〜100バール、好ましくは1.1〜90バール、さらにより好ましくは1.2〜80バール、さらにより好ましくは1.3〜70バール、さらにより好ましくは1.4〜60バールの圧力でリグニン含有出発物質を抽出することによって得られる、請求項1〜20のいずれか一項に記載のプロセス。
- 前記粒子を含まないリグニン含有溶液が、多年生植物の材料、好ましくは木材、木材廃棄物または低木挿し木、または一年生植物の材料、好ましくはわら、または生物起源の廃棄物から選択されるリグニン含有出発物質を抽出することによって得られる、請求項1〜21のいずれか一項に記載のプロセス。
- 前記粒子を含まないリグニン含有溶液が、0.5〜50mm、好ましくは0.5〜40mm、さらにより好ましくは0.5〜30mm、さらにより好ましくは1〜25mm、さらにより好ましくは1〜20mm、さらにより好ましくは5〜10mmの平均サイズを有するリグニン含有出発物質を抽出することによって得られる、請求項1〜22のいずれか一項に記載のプロセス。
- 前記粒子を含まないリグニン含有溶液が、リグニン含有出発物質を抽出し、その後、抽出混合物中に依然として存在する固体粒子を除去することによって得られる、請求項1〜23のいずれか一項に記載のプロセス。
- 前記懸濁液中の前記リグニン粒子が、400nm未満、好ましくは250nm未満、さらにより好ましくは200nm未満、さらにより好ましくは150nm未満、特に100nm未満の平均直径を有する、請求項1〜24のいずれか一項に記載のプロセス。
- 前記懸濁液中の前記リグニン粒子の少なくとも50%以上が、流体力学的直径(HD)として測定される、特に動的光散乱(DLS)により測定される、400nm未満、好ましくは300nm未満、さらにより好ましくは250nm未満、特に150nm未満、さらにより好ましくは100nm未満のサイズを有する、請求項1〜25のいずれか一項に記載のプロセス。
- 前記懸濁液中の前記リグニン粒子の少なくとも60%以上、好ましくは少なくとも70%以上、さらにより好ましくは少なくとも80%以上、特に少なくとも90%以上は、流体力学的直径(HD)として測定される、特に動的光散乱(DLS)により測定される、500nm未満、好ましくは300nm未満、さらにより好ましくは250nm未満、さらにより好ましくは200nm未満、特に100nm未満のサイズを有する、請求項1〜26のいずれか一項に記載のプロセス。
- 前記沈殿剤が液体沈殿剤であり、前記ミキサおよび混合デバイスにおいて、前記リグニン含有溶液中の溶媒の濃度が、1〜10,000重量%/秒、好ましくは10〜5,000重量%/秒、好ましくは10〜1,000重量%/秒、好ましくは10〜100重量%/秒、特に50〜90重量%/秒の範囲で減少するように添加される、請求項1〜27のいずれか一項に記載のプロセス。
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