JP6735717B2 - 蒸気による加熱効率向上方法及び抄紙方法 - Google Patents
蒸気による加熱効率向上方法及び抄紙方法 Download PDFInfo
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- JP6735717B2 JP6735717B2 JP2017181476A JP2017181476A JP6735717B2 JP 6735717 B2 JP6735717 B2 JP 6735717B2 JP 2017181476 A JP2017181476 A JP 2017181476A JP 2017181476 A JP2017181476 A JP 2017181476A JP 6735717 B2 JP6735717 B2 JP 6735717B2
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- steam
- dryer
- heating efficiency
- polyamine
- papermaking
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- 238000000034 method Methods 0.000 title claims description 28
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- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 4
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- 235000020661 alpha-linolenic acid Nutrition 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- XEVRDFDBXJMZFG-UHFFFAOYSA-N carbonyl dihydrazine Chemical compound NNC(=O)NN XEVRDFDBXJMZFG-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
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- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 2
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 150000004671 saturated fatty acids Chemical class 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 2
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 2
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 description 1
- QGLWBTPVKHMVHM-KTKRTIGZSA-N (z)-octadec-9-en-1-amine Chemical compound CCCCCCCC\C=C/CCCCCCCCN QGLWBTPVKHMVHM-KTKRTIGZSA-N 0.000 description 1
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- RJWLLQWLBMJCFD-UHFFFAOYSA-N 4-methylpiperazin-1-amine Chemical compound CN1CCN(N)CC1 RJWLLQWLBMJCFD-UHFFFAOYSA-N 0.000 description 1
- 235000021357 Behenic acid Nutrition 0.000 description 1
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 1
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- 229910001018 Cast iron Inorganic materials 0.000 description 1
- GXGJIOMUZAGVEH-UHFFFAOYSA-N Chamazulene Chemical group CCC1=CC=C(C)C2=CC=C(C)C2=C1 GXGJIOMUZAGVEH-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CIWBSHSKHKDKBQ-DUZGATOHSA-N D-araboascorbic acid Natural products OC[C@@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-DUZGATOHSA-N 0.000 description 1
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Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/10—Removing condensate from the interior of the cylinders
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/14—Nitrogen-containing compounds
- C23F11/141—Amines; Quaternary ammonium compounds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
- F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
- F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
- F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
- F26B13/18—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning heated or cooled, e.g. from inside, the material being dried on the outside surface by conduction
- F26B13/183—Arrangements for heating, cooling, condensate removal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/005—Drying-steam generating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/001—Heating arrangements using waste heat
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Description
この乾燥工程での湿紙の乾燥効率を高めて紙の生産量を上げるためには、ドラム11内で発生した凝縮水Wを効率よく排出する必要がある。
この特許文献1で提案されている長鎖脂肪族アミンは、一般式CH3(CH2)mNH2(m=9〜23)で表される直鎖状長鎖脂肪族アミンであり、特許文献1には、本発明で用いるポリアミンの開示はない。
R1−[NH−(CH2)m]n−NH2 …(1)
(式中、R1は炭素数10〜22の飽和又は不飽和炭化水素基を示し、mは1〜8の整数であり、nは1〜7の整数である。nが2以上の場合、複数のNH−(CH2)mは同一でも異なっていてもよい。)
まず、本発明で用いるポリアミンについて説明する。
本発明で用いるポリアミンは、下記一般式(1)で表されるものである。
R1−[NH−(CH2)m]n−NH2 …(1)
(式中、R1は炭素数10〜22の飽和又は不飽和炭化水素基を示し、mは1〜8の整数であり、nは1〜7の整数である。nが2以上の場合、複数のNH−(CH2)mは同一でも異なっていてもよい。)
mは1〜8の整数であり、腐食抑制の観点から好ましくは2〜6の整数である。(CH2)m基としては、メチレン基、エチレン基(ジメチレン基)、プロピレン基(トリメチレン基)又はブチレン基(テトラメチレン基)が挙げられるが、好ましくはプロピレン基である。
また、nは腐食抑制の観点から好ましくは1〜3の整数である。
乳化剤としては、例えば、ポリオキシエチレンアルキルアミン等が挙げられ、好ましくはアルキル基の炭素数が10〜18のポリオキシエチレンアルキルアミンである。
これ以外の乳化剤としては、脂肪酸アルカリ金属塩、特に炭素数8〜24とりわけ炭素数10〜22の飽和又は不飽和の脂肪酸アルカリ金属塩を好適に用いることができ、具体的には、カプリン酸、ラウリン酸、ミリスチン酸、パルミチン酸、ステアリン酸、アラキン酸、ベヘン酸、オレイン酸、エルカ酸、リノール酸、リノレン酸などの飽和又は不飽和の脂肪酸のナトリウム塩やカリウム塩が挙げられる。また、この脂肪酸アルカリ金属塩としては、食用油脂から製造される脂肪酸のナトリウム塩やカリウム塩も好ましく用いることができる。脂肪酸アルカリ金属塩としては、特に炭素数14〜22の不飽和脂肪酸、例えば、オレイン酸、エルカ酸、リノール酸、リノレン酸から選ばれる少なくとも1種を25重量%以上含有する脂肪酸のアルカリ金属塩が好適である。乳化剤としては、その他、グリセリンと前述の脂肪酸とのエステルも好適に用いることができ、特にステアリン酸とのエステルを好ましく用いることができる。
これらの乳化剤は、1種のみを用いてもよく、2種以上を併用してもよい。
また、詰まりが発生しない範囲でオクタデシルアミン、オレイルアミン等の長鎖脂肪族アミンを併用してもよい。
本発明においては、上記のポリアミンと共に、他の薬剤を併用してもよい。例えば、pH調整機能を有する中和性アミンを併用してもよく、中和性アミンの併用で蒸気ドラムやドラム前後の蒸気復水配管の腐食速度を低減させるという効果を得ることができる。中和性アミンとしては、アンモニア、モノエタノールアミン(MEA)、シクロヘキシルアミン(CHA)、モルホリン(MOR)、ジエチルエタノールアミン(DEEA)、モノイソプロパノールアミン(MIPA)、3−メトキシプロピルアミン(MOPA)、2−アミノ−2−メチル−1−プロパノール(AMP)、ジグリコールアミン(DGA)等の揮発性アミン等を用いることができる。これらは1種のみを用いてもよく、2種以上を併用してもよい。
また、中和性アミンに替えて、以下の脱酸素剤の熱分解に由来するアンモニアでpH調整してもよい。
本発明では、金属材料を介して蒸気により被加熱物を加熱するに当たり、前述のポリアミン、更に必要に応じて中和性アミンや脱酸素剤等の他の薬剤を蒸気系内に存在させる。
例えばプレート熱交のような一般的な熱交換器等における蒸気による加熱又は冷却工程にも適用することができる。
上記の通り、本発明の蒸気による加熱効率向上方法は、抄紙設備に設けられた蒸気ドライヤに好適に適用される。その場合において、抄紙設備における抄紙量と蒸気ドライヤにおける蒸気使用量に基づいて、蒸気ドライヤに供給する蒸気量を調整することが好ましく、このように、蒸気量をその必要量に応じて調整することにより、蒸気原単位を低減し、生産効率を高めることができる。また、蒸気ドライヤに供給する蒸気量を固定したままで、抄造量を向上させることができる。
なお、以下において、蒸気原単位は、不良発生分を除いた紙の生産量(抄造量)(t)に対する蒸気使用量(t)の割合で算出した。
第1図に示す抄紙乾燥設備において、ヤンキードライヤのドラム直径3m、供給水蒸気圧力0.6MPa、水蒸気供給量約900kg/hとし、ドラムの外表面温度が100℃となり、乾燥後の製品(紙)の含水率が20〜30%となるように、ヤンキードライヤへの水蒸気供給量を流量調節弁9で制御した。
なお、ポリアミンはポリオキシエチレンココアミンで乳化させて添加した。ポリオキシエチレンココアミンの配合量はポリアミン100重量部に対し15重量部とした。
実施例1において、ポリアミンと共に、中和性アミンであるMEA3.2ppmとDEEA2.2ppmを併用添加したこと以外は実施例1と同様にして、薬剤添加前後の蒸気原単位とストレーナーの詰まりの有無を調べ、結果を表1に示した。
実施例1において、N−オクタデセニルプロパン−1,3−ジアミンの代りにオクタデシルアミンを用い、蒸気量に対して0.1ppm添加すると共に、中和性アミンとしてAMPを3.8ppm添加したこと以外は実施例1と同様にして、薬剤添加前後の蒸気原単位とストレーナーの詰まりの有無を調べ、結果を表1に示した。
5 ボイラ
7 水蒸気ヘッダ
11 ドラム
12 サイホン
P 湿紙
W 凝縮水
Claims (5)
- 金属材料を介して蒸気により被加熱物を加熱する加熱工程において、該蒸気による加熱効率を向上させる方法であって、
該蒸気系内に、下記一般式(1)で表されるポリアミンと中和性アミンとを存在させることを特徴とする蒸気による加熱効率向上方法。
R1−[NH−(CH2)m]n−NH2 …(1)
(式中、R1は炭素数10〜22の飽和又は不飽和炭化水素基を示し、mは1〜8の整数であり、nは1である。) - 前記金属材料が回転していることを特徴とする請求項1に記載の蒸気による加熱効率向上方法。
- 前記加熱工程は、蒸気ドライヤにより、前記被加熱物を加熱する工程であり、該蒸気ドライヤに蒸気を供給する蒸気配管または蒸気ヘッダの該蒸気ドライヤ直前の箇所に前記ポリアミンを添加することを特徴とする請求項1又は2に記載の蒸気による加熱効率向上方法。
- 前記蒸気ドライヤは抄紙設備に設けられた蒸気ドライヤであることを特徴とする請求項1ないし3のいずれか1項に記載の蒸気による加熱効率向上方法。
- 抄紙設備に設けられた蒸気ドライヤにおいて、請求項1ないし3のいずれか1項に記載の蒸気による加熱効率向上方法により、蒸気による加熱効率を向上させる抄紙方法であって、該抄紙設備における抄紙量と該蒸気ドライヤにおける蒸気使用量に基づいて、該蒸気ドライヤに供給する蒸気量を調整することを特徴とする抄紙方法。
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JP2017181476A JP6735717B2 (ja) | 2017-09-21 | 2017-09-21 | 蒸気による加熱効率向上方法及び抄紙方法 |
FIEP18858092.2T FI3686532T3 (fi) | 2017-09-21 | 2018-07-30 | Menetelmä höyrylämmityksen tehokkuuden parantamiseksi ja paperinvalmistusmenetelmä |
BR112020002195-4A BR112020002195A2 (pt) | 2017-09-21 | 2018-07-30 | método para melhorar a eficiência do aquecimento a vapor, e método de fabricação de papel |
EP18858092.2A EP3686532B1 (en) | 2017-09-21 | 2018-07-30 | Method for improving efficiency of steam heating, and papermaking method |
KR1020207005065A KR102497100B1 (ko) | 2017-09-21 | 2018-07-30 | 증기에 의한 가열 효율 향상 방법 및 초지 방법 |
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CN202210573906.7A CN114808517A (zh) | 2017-09-21 | 2018-07-30 | 提高蒸汽加热效率的方法及抄纸方法 |
PCT/JP2018/028433 WO2019058765A1 (ja) | 2017-09-21 | 2018-07-30 | 蒸気による加熱効率向上方法及び抄紙方法 |
CN201880054216.2A CN111033161B (zh) | 2017-09-21 | 2018-07-30 | 提高蒸汽加热效率的方法及抄纸方法 |
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US16/640,272 US11555274B2 (en) | 2017-09-21 | 2018-07-30 | Method for improving efficiency of steam heating, and papermaking method |
TW107133144A TWI822699B (zh) | 2017-09-21 | 2018-09-20 | 提高藉由蒸汽之加熱效率的方法及造紙方法 |
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JPS5961299U (ja) * | 1982-10-15 | 1984-04-21 | 三菱重工業株式会社 | ドライヤロ−ル |
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