JP4113121B2 - 複数の物質を含有する混合物の分離処理の制御法 - Google Patents
複数の物質を含有する混合物の分離処理の制御法 Download PDFInfo
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- JP4113121B2 JP4113121B2 JP2003528647A JP2003528647A JP4113121B2 JP 4113121 B2 JP4113121 B2 JP 4113121B2 JP 2003528647 A JP2003528647 A JP 2003528647A JP 2003528647 A JP2003528647 A JP 2003528647A JP 4113121 B2 JP4113121 B2 JP 4113121B2
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- 238000000034 method Methods 0.000 title claims description 33
- 239000000203 mixture Substances 0.000 title claims description 13
- 238000000926 separation method Methods 0.000 title description 12
- 239000000126 substance Substances 0.000 title description 3
- 239000007791 liquid phase Substances 0.000 claims description 32
- 238000012545 processing Methods 0.000 claims description 29
- 239000000047 product Substances 0.000 claims description 25
- 230000008569 process Effects 0.000 claims description 16
- 238000004821 distillation Methods 0.000 claims description 15
- 238000004458 analytical method Methods 0.000 claims description 14
- 238000009835 boiling Methods 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 14
- 239000012467 final product Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 238000004886 process control Methods 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 claims 1
- ZPTVNYMJQHSSEA-UHFFFAOYSA-N 4-nitrotoluene Chemical compound CC1=CC=C([N+]([O-])=O)C=C1 ZPTVNYMJQHSSEA-UHFFFAOYSA-N 0.000 description 12
- 230000008859 change Effects 0.000 description 7
- QZYHIOPPLUPUJF-UHFFFAOYSA-N 3-nitrotoluene Chemical compound CC1=CC=CC([N+]([O-])=O)=C1 QZYHIOPPLUPUJF-UHFFFAOYSA-N 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- PLAZTCDQAHEYBI-UHFFFAOYSA-N 2-nitrotoluene Chemical compound CC1=CC=CC=C1[N+]([O-])=O PLAZTCDQAHEYBI-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- VLZLOWPYUQHHCG-UHFFFAOYSA-N nitromethylbenzene Chemical class [O-][N+](=O)CC1=CC=CC=C1 VLZLOWPYUQHHCG-UHFFFAOYSA-N 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- VMMLSJNPNVTYMN-UHFFFAOYSA-N dinitromethylbenzene Chemical class [O-][N+](=O)C([N+]([O-])=O)C1=CC=CC=C1 VMMLSJNPNVTYMN-UHFFFAOYSA-N 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012821 model calculation Methods 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 238000010986 on-line near-infrared spectroscopy Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/42—Regulation; Control
- B01D3/4211—Regulation; Control of columns
- B01D3/4255—Head-, side-, bottom- and feed stream
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
- B01D3/146—Multiple effect distillation
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B17/00—Systems involving the use of models or simulators of said systems
- G05B17/02—Systems involving the use of models or simulators of said systems electric
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/25—Chemistry: analytical and immunological testing including sample preparation
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
最終生成物(p−ニトロトルエン)の濃度を測定する際、p−ニトロトルエンが高濃度であるため、NIR分析によって、所望の精度を有しない測定値がもたらされる。
a)成分A、Bの濃度を、塔の底部領域又は頂部領域の外側の塔内の箇所で、殊に塔全体の長さの最上部10分の1と最下部10分の1との間の中間領域内に配置された箇所で、分析機器、殊に近赤外線分光計を用いてオンラインで測定し、
b)a)で測定された、成分A又はBの少なくとも1つの濃度を、処理制御系のコンピュータユニットにおいてオンライン処理モデルに取り込んで用い、この処理モデルにおいて、処理制御系と制御技術とにより決定される間隔時間内に、測定値と、殊に供給流、加熱媒体供給流、殊に蒸気供給流及び還流の温度、圧力及び質量流量から選択された、塔中で直接測定された他のパラメータとを用いて液相濃度XALPを算出し、
c)制御の目的のためにモデルにより算出された液相濃度XALPを、液相濃度制御パラメータの実際値として処理することにより、処理モデルを用いて算出された液相濃度XALPを制御のために使用し、
d)処理モデルの所定のパラメータは、物理的解釈が可能なパラメータ、殊に、構造化された充填体及びランダム充填体の理論段数及び/又は段効率の程度であり、これらを延長された時間、殊に数時間、場合により数日以内に、最終生成物の分析、及び処理モデルへの分析データの導入をベースとして、それぞれの塔条件、例えばファウリングの程度に適合させる
ことを特徴とする、蒸留塔の処理制御法を提供する。
2 供給流量センサ
3 近赤外線分光計
4 モデル調整部
5 排出箇所
6 コンピュータユニット
7 制御装置
8 比較装置
9 蒸留塔
10 蒸留塔
11 温度測定機器
12 流量制御装置
13 導管
14 底部排出導管
15 供給導管
16 凝縮器
17 制御装置
18 センサ
19 制御バルブ
20 導管
21 導管
22 還流
23 底部
24 温度センサ
25 モデル算出値
26 目標値
27 温度センサ
28 処理制御系
29 測定箇所
30 頂部区画
Claims (8)
- 下方塔区画(9)と上方塔区画(10)とを有する蒸留塔を、液相濃度を制御しながら処理制御し、その際、複数の成分A、Bを分離し、下方塔区画(9)の底部(23)で得られた成分を高純度で得る方法において、
a)成分A、Bの濃度を、塔全体(9、10)の長さの最上部10分の1と最下部10分の1との間の中間領域内に配置された箇所(29)で、分析機器(3)によってオンラインで測定し、
b)a)で測定された、成分A又はBの少なくとも1つの濃度を、処理制御系(28)のコンピュータユニット(6)においてオンライン処理モデルに取り込んで用い、この処理モデルにおいて、処理制御系(28)と制御技術とにより決定される間隔時間内に、測定値と、供給流(15)、還流(22)、加熱媒体又は蒸気供給流(18)の温度、圧力、質量流量から選択された、塔(9、10)中で直接測定された他のパラメータとを用いて液相濃度XALPを算出し、
c)制御の目的のためにモデルにより算出された液相濃度XALPを、液相濃度制御パラメータの実際値として処理することにより、処理モデルを用いて算出された液相濃度XALPを制御のために使用し、
d)構造化された充填体及びランダム充填体の理論段数及び/又は段効率の程度を、所定の時間間隔で、最終生成物の分析、及び処理モデルへの分析データの導入をベースとして、それぞれの塔条件、例えばファウリングの程度に適合させる
ことを特徴とする、蒸留塔の処理制御法。 - 塔を少なくとも2つの副塔(9)及び(10)に分割し、濃度の測定a)を副塔(9)と(10)との間で行う、請求項1記載の方法。
- 請求項1のb)で使用する他のパラメータが、更に請求項1のa)で定義された測定箇所で測定された質量流量及び前記の質量流量の温度を含む、請求項1記載の方法。
- 分析機器を塔全体(9、10)の長さの上方5分の1と下方5分の1との間に配置する、請求項1から3までのいずれか1項記載の方法。
- 使用する分析機器がNIR分光計、UV−VIS分光計、液体クロマトグラフ又はガスクロマトグラフである、請求項1から4までのいずれか1項記載の方法。
- 処理モデルのために使用する他のパラメータが、塔頂部(24)における温度及び塔(10)の供給領域(27)における温度である、請求項1から5までのいずれか1項記載の方法。
- 分離されるA、B混合物が最高で20K離れた沸点を有する、請求項1から6までのいずれか1項記載の方法。
- オンライン分析と処理モデルとの組合せを、塔頂生成物の濃度制御のために使用してもよい、請求項1から7までのいずれか1項記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10146103 | 2001-09-19 | ||
DE10156720A DE10156720A1 (de) | 2001-09-19 | 2001-11-19 | Verfahren zur Prozessführung der Trennung von Mehrstoffgemischen |
PCT/EP2002/009969 WO2003024556A1 (de) | 2001-09-19 | 2002-09-06 | Verfahren zur prozessführung der trennung von mehrstoffgemischen |
Publications (2)
Publication Number | Publication Date |
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JP2005503251A JP2005503251A (ja) | 2005-02-03 |
JP4113121B2 true JP4113121B2 (ja) | 2008-07-09 |
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Application Number | Title | Priority Date | Filing Date |
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JP2003528647A Expired - Lifetime JP4113121B2 (ja) | 2001-09-19 | 2002-09-06 | 複数の物質を含有する混合物の分離処理の制御法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8078323B2 (ja) |
EP (1) | EP1429857B1 (ja) |
JP (1) | JP4113121B2 (ja) |
CN (1) | CN100337711C (ja) |
WO (1) | WO2003024556A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10304615A1 (de) * | 2003-02-05 | 2004-08-19 | Bayer Ag | Verfahren zur Überwachung und Führung von Nitrierprozessen mit Hilfe von Online-Spektrometern |
CN100346856C (zh) * | 2005-10-14 | 2007-11-07 | 清华大学 | 精馏塔的一种自动控制和优化方法 |
PL1901142T3 (pl) * | 2006-09-18 | 2018-07-31 | Abb Research Ltd. | Optymalizacja procesu rozdzielania materiałów |
CN100440081C (zh) * | 2006-12-26 | 2008-12-03 | 浙江大学 | 空分塔的广义预测控制系统及方法 |
CN102039059B (zh) * | 2009-10-10 | 2012-11-07 | 中国石油化工股份有限公司 | 一种精丙烯塔顶的控制方法 |
JP2011173844A (ja) * | 2010-02-25 | 2011-09-08 | Teijin Ltd | 精製ラクチドの製造方法 |
US11235260B2 (en) * | 2016-08-04 | 2022-02-01 | Covestro Deutschland Ag | Method for controlling a rectification column |
EP3643376A1 (de) * | 2018-10-24 | 2020-04-29 | Covestro Deutschland AG | Thermisches trennverfahren mit soft-sensor |
US20240175858A1 (en) * | 2022-11-28 | 2024-05-30 | Halliburton Energy Services, Inc. | Multi-column gas chromatography for analysis of a formation sample |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US3208230A (en) * | 1960-02-29 | 1965-09-28 | Phillips Petroleum Co | Automatic continuous feedback process control |
US4784677A (en) * | 1987-07-16 | 1988-11-15 | The Boc Group, Inc. | Process and apparatus for controlling argon column feedstreams |
US5260865A (en) | 1991-04-01 | 1993-11-09 | Beauford Martin H | Nonlinear model based distillation control |
DE4127536A1 (de) * | 1991-08-21 | 1993-02-25 | Henkel Kgaa | Modellgestuetztes verfahren zum regeln einer rektifikationskolonne |
US5437179A (en) * | 1993-07-07 | 1995-08-01 | Union Carbide Chemicals & Plastics Technology Corporation | Fast gas chromatography method, apparatus and applications |
US5464504A (en) * | 1993-12-02 | 1995-11-07 | Phillips Petroleum Company | Inferential correction of composition for a distillation analyzer |
CN1048642C (zh) * | 1996-06-25 | 2000-01-26 | 抚顺石油化工公司石油二厂 | 气体分馏塔多参数在线优化控制方法 |
US6006546A (en) * | 1998-04-29 | 1999-12-28 | Air Products And Chemicals, Inc. | Nitrogen purity control in the air separation unit of an IGCC power generation system |
-
2002
- 2002-09-06 US US10/490,006 patent/US8078323B2/en not_active Expired - Fee Related
- 2002-09-06 WO PCT/EP2002/009969 patent/WO2003024556A1/de active Application Filing
- 2002-09-06 CN CNB028184424A patent/CN100337711C/zh not_active Expired - Lifetime
- 2002-09-06 EP EP02764873A patent/EP1429857B1/de not_active Expired - Lifetime
- 2002-09-06 JP JP2003528647A patent/JP4113121B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1429857B1 (de) | 2010-12-08 |
JP2005503251A (ja) | 2005-02-03 |
CN1556727A (zh) | 2004-12-22 |
US8078323B2 (en) | 2011-12-13 |
EP1429857A1 (de) | 2004-06-23 |
US20040249512A1 (en) | 2004-12-09 |
WO2003024556A1 (de) | 2003-03-27 |
CN100337711C (zh) | 2007-09-19 |
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