WO2008138212A1 - Système de distillation à tours multiples permettant d'économiser l'énergie - Google Patents

Système de distillation à tours multiples permettant d'économiser l'énergie Download PDF

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Publication number
WO2008138212A1
WO2008138212A1 PCT/CN2008/000879 CN2008000879W WO2008138212A1 WO 2008138212 A1 WO2008138212 A1 WO 2008138212A1 CN 2008000879 W CN2008000879 W CN 2008000879W WO 2008138212 A1 WO2008138212 A1 WO 2008138212A1
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WO
WIPO (PCT)
Prior art keywords
column
tower
distillation
reboiler
methanol
Prior art date
Application number
PCT/CN2008/000879
Other languages
English (en)
Chinese (zh)
Inventor
Guoning Lin
Original Assignee
Guoning Lin
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guoning Lin filed Critical Guoning Lin
Publication of WO2008138212A1 publication Critical patent/WO2008138212A1/fr

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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
    • B01D3/001—Processes specially adapted for distillation or rectification of fermented solutions
    • B01D3/002—Processes specially adapted for distillation or rectification of fermented solutions by continuous methods
    • 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

Definitions

  • the utility model relates to an alcohol distillation tower device, in particular to an efficient multi-tower energy-saving distillation device for purifying alcohol.
  • the traditional multi-tower differential pressure distillation device uses water vapor as the heating medium, and its lack of existence: water vapor dissipates slowly and heat supply is unstable, which results in low distillation efficiency and high cost.
  • its steam steam boiler has low safety factor in production. The process is easy to scale and stop production and maintenance, causing economic losses, labor intensity, and thus the cost of the alcohol production enterprise is high;
  • Chinese Patent 200520055337. 9 Publication Day 2006. 03. 22 discloses an energy-saving steaming tower Due to the three distillation towers, the enthalpy tower, the aldehyde tower, and the refined tower, the atmospheric distillation technology is used to make the alcohol fail to meet the national methanol standard requirements, and it is difficult to meet the design requirements.
  • the utility model aims to provide a multi-tower energy-saving distillation device with high alcohol purification, high production efficiency, high safety and low energy consumption.
  • the multi-tower energy-saving distillation device of the present invention comprises a crude distillation tower, a fine condensing tower, a methanol tower, a high-quality tower and a heat-conducting oil boiler, and the top of the crude sluice tower is connected to the middle of the methanol tower through an alcohol output pipe, and the distillation The tower is connected to the middle of the high-quality tower through the alcohol output pipe. The lower part of the high-quality tower is connected with the finished alcohol condenser.
  • the top of the fine tower and the reboiler of the crude tower form a loop.
  • the top of the methanol tower forms a loop with the reboiler of the high-quality tower.
  • the distillation tower forms a circulating distillation circuit through the pipeline and the preheater and the heater.
  • the top of the high quality tower forms a circulating distillation circuit through the alcohol output pipe and more than one condenser, the wine tank and the pump, and the reboiler and the methanol tower of the rectification tower.
  • the reboiler built into the bottom forms a circuit with the heat transfer oil boiler through the heat transfer oil input and output pipe.
  • a recovery tower is disposed between the rectification column and the methanol column, and the middle portion of the recovery tower is connected to the rectification column, and the recovery tower forms a circulation distillation circuit through the alcohol output pipe.
  • the upper end of the reboiler is provided with a float.
  • the float valve is composed of a bottom plate, a cylindrical side wall and an end cover, and the side wall is provided with a butterfly opening.
  • the upper end of the reboiler is provided with a float, the float valve cover and not less than three legs, the legs are evenly distributed on one side of the valve cover, and the legs and the valve cover are integrally formed.
  • the top of the rough tower is connected to the middle of the methanol tower through the alcohol output pipe.
  • the distillation tower is connected to the middle of the high-quality tower through the alcohol output pipe.
  • the lower part of the high-quality tower is connected with the finished alcohol condenser, and the top of the distillation column and the crude distillation tower are reboiled.
  • the circuit forms a loop, the top of the methanol tower forms a loop with the reboiler of the high-quality tower, the crude tower forms a circulating distillation circuit through the pipeline with the preheater and the heater, and the top of the high-quality tower passes through the alcohol output pipe with more than one condenser and the wine tank.
  • the pump forms a circulating distillation circuit, the reboiler of the rectification tower and the reboiler built in the bottom of the methanol tower form a loop through the heat transfer oil input and output pipe and the heat transfer oil boiler; repeated cycles through the crude distillation tower, the methanol tower and the high quality tower Steaming, greatly improving the purity of the finished alcohol, improving the quality of the alcohol, and making the purity of the alcohol reach the national standard; using the wine vapor to heat the reboiler of the crude distillation tower and the high-quality tower, using the heat energy of the distillation unit itself to improve The utilization rate of heat energy; at the same time, the heat transfer oil is used as a heating medium to provide heat stability.
  • the middle of the recovery tower is connected with the rectification tower.
  • the recovery tower forms a circulation distillation loop through the alcohol output tube; the quality of the alcohol is improved by circulating steam from the multi-tower.
  • the upper end of the reboiler is provided with a float valve.
  • the float valve is composed of a bottom plate, a cylindrical side wall and an end cover, and the side wall is provided with a butterfly opening; the heat of the wine vapor is fully ejected to achieve a full distillation effect. .
  • the further improvement of the utility model is that a floating valve integrally formed with a foot and a wide cover is arranged at the upper end of the reboiler, such a structure makes the heat of the wine steam fully ejected, the distillation effect is good, and the float valve of the structure has less consumables, Reduced production costs.
  • Figure 1 is a connection diagram of the utility model
  • FIG. 2 is a connection diagram of another embodiment of the present invention.
  • Figure 3 is a schematic view showing the structure of the float valve of the present invention.
  • Figure 4 is a schematic view showing another structure of the float valve of the present invention.
  • the multi-tower energy-saving distillation device of the present invention comprises a crude distillation column 1, a rectification column 2, a methanol column 3, a high-quality column 4 and a heat transfer oil boiler 5, and a distillation pipe 2 and a crude distillation column 1
  • the reboiler 11 forms a loop, the top of the methanol column 3 is looped through the pipeline with the reboiler 41 of the high quality column 4, and the reboiler 21 of the rectification column 2 and the reboiler 31 built in the bottom of the methanol column 3 are fed through the heat transfer oil.
  • the output pipe forms a circuit with the heat transfer oil boiler 5, and the upper part of the crude distillation column 1 is connected with a fermentation sputum pipe.
  • the top of the crude distillation column 1 is connected to the middle of the methanol column 3 through the alcohol output pipe, and the lower part of the rough sluice tower 1 passes through the liquor output pipe and the fine
  • the distillation column 2 is connected, the distillation column 2 is connected to the middle of the high quality column 4 through the alcohol output pipe, the top of the methanol column 3 is connected with the high quality column 4 reboiler 41 through a pipeline to form a loop, and the top of the high quality tower 4 is formed into a circulating distillation circuit through the alcohol output pipe.
  • the bottom of the high quality tower 4 is connected with a finished alcohol condenser 47 through a pipeline; the preheater 13, the condenser 14, 15 , the wine tank 110 and the pump 111 are connected in sequence to the alcohol output pipe of the crude distillation tower 1, and the lower part of the reboiler 11 In order
  • the wine tank 18, the pump 19, and the bottom of the reboiler 11 are connected with a pump 114.
  • the pump 114 is connected to the heater 12 via a pipe, the heater 12 is provided with a waste liquid discharge port, and the lower portion of the distillation column 2 is provided with a oil extraction port.
  • a waste water discharge port 27 at the same time at the bottom of the rectification column 2 is provided with a waste water discharge port 27; in the methanol column 3 circuit is sequentially connected with a reboiler 41, a wine tank 35, a pump 34, a top of the wine tank 35 is provided with condensers 32, 33, condensation
  • the lower part of the device 32 is connected with a wine valve; the high quality tower 4 alcohol output pipe is connected with a condenser 48, 49, 410, a wine tank 46 and a pump 44 in sequence, a valve is arranged at the bottom of the wine tank 46; a float valve is arranged at the upper end of the reboiler .
  • the fermentation mash passes through the pipeline into the rough tower 1 preheater 13, and the waste liquid generated by the crude distillation tower 1 is discharged through the bottom of the rough sluice tower 1 and is pumped into the heater 12 by the pump 114, and then enters the rough sluice tower 1 after heating.
  • the upper inlet port, the top of the crude distillation column 1 discharges the wine vapor through the wine steam pipe into the preheater 13 of the crude distillation column 1 and the condensers 14, 15 for condensation, after cooling, the wine liquid flows into the wine tank 110, and then the pump 111
  • the upper feed port of the methanol column 3 is hit, and the waste liquor of the rough column 1 is discharged through the waste liquid pipe 115 connected to the heater 12.
  • the light wine liquid cooled by the reboiler 11 of the crude distillation column 1 flows into the wine tank 18 through the pipeline, flows out through the pipeline, and is pumped into the rectification tower 2 by the pump 19 to continue the distillation; the fine crucible tower, the heat transfer oil flows into the rectification tower 2 and reboils
  • the wine vapor generated by the liquid 21 through the layer of steam distillation is discharged to the crude distillation column 1 reboiler 11 through the distillation column top wine steam pipe 26 as a heating medium, and the light wine discharge port of the distillation column 2 passes through
  • the pipeline is pumped into the middle inlet of the high-quality tower 4, and the miscellaneous oil of the distillation tower 2 is discharged through the oil extraction port 23; the heat-conducting oil enters the reboiler 31 built in the bottom of the methanol tower 3 through the pipeline, and the wine vapor transportation generated by the heating To the reboiler 41 of the high-quality tower 4, the wine steam generated by
  • the high quality tower 4 uses the methanol tower 3 to output the wine vapor through the pipeline to enter the reboil of the high quality tower 4.
  • the heat generated by the device 41 carries out the high-quality liquor produced by the distillation of the alcohol layer obtained by the distillation of the alcohol layer by the distillation column 2 into the high-quality tower condensers 410, 49, 48, and then enters the wine tank 46, and then The pump 44 is driven through the pipeline, and the upper inlet of the high-quality tower 4 is repeatedly distilled.
  • the high-concentration liquor discharged from the bottom of the high-quality tower 4 is cooled by the condenser 47 and discharged as finished alcohol.
  • FIG. 2 is a schematic diagram showing the connection of the recovery tower 6 of the present invention.
  • the oil extraction port 3 of the distillation column 2 is connected to the recovery tower 6, and the top of the recovery tower 6 forms a loop through the alcohol output pipe, and the reboiler at the bottom of the recovery tower 61 is formed in a circuit with the boiler 5 through the oil conduit, and the output pipe is connected in sequence with the condensers 62, 63, 64, the wine tank 65 and the pump 66, and a valve is provided at the lower portion of the wine tank 65 for extracting the wine.
  • FIG. 3 is a schematic view showing the structure of a float valve at the upper end of the reboiler.
  • the float valve is composed of a bottom plate 7, a cylindrical side wall 8 and an end cover 9.
  • the bottom plate has a through hole 71 in the center thereof, and the side wall 8 is provided. Butterfly opening.
  • the floating valve includes a valve cover 17 and not less than three legs 16, and the legs 16 are evenly distributed on one side of the wide cover 17, the legs 16 and The bonnet 17 is formed in one piece.
  • the float valve of this structure has less consumables and reduces production costs.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

L'invention concerne un dispositif de distillation à tours multiples permettant d'économiser l'énergie et s'utilisant dans la purification d'éthanol, qui comprend une colonne de distillation (1) de brut, une colonne de rectification (2), une colonne de méthanol (3), une colonne (4) de qualité supérieure et un bouilleur de pétrole (5) à transfert de chaleur. Le sommet de la colonne de distillation (1) de brut est relié au milieu de la colonne de méthanol (3) par un tuyau d'apport d'éthanol. La colonne de rectification (2) est reliée au milieu de la colonne (4) de qualité supérieure par un tuyau d'apport d'éthanol. Un condenseur (47) de produit d'éthanol est relié au fond de la colonne (4) de qualité supérieure. Une boucle est formée entre le sommet de la colonne de rectification (2) et un rebouilleur (11) de la colonne de distillation (1) de cru. Une boucle est formée entre le sommet de la colonne de méthanol (3) et un rebouilleur (41) de la colonne (4) de qualité supérieure. Une boucle de distillation à circulation est formée entre la colonne de distillation (1) de cru et un élément chauffant (12). Une boucle de distillation à circulation est formée au sommet de la colonne (4) de qualité supérieure par un tuyau d'apport d'éthanol. Deux boucles sont formées entre le bouilleur (5) et un rebouilleur (21) de la colonne de rectification (2), et un rebouilleur (31) se situant au fond de la colonne de méthanol (3) par des conduites de pétrole à transfert de chaleur, respectivement.
PCT/CN2008/000879 2007-05-10 2008-04-29 Système de distillation à tours multiples permettant d'économiser l'énergie WO2008138212A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200720051283.8 2007-05-10
CNU2007200512838U CN201049932Y (zh) 2007-05-10 2007-05-10 多塔节能蒸馏装置

Publications (1)

Publication Number Publication Date
WO2008138212A1 true WO2008138212A1 (fr) 2008-11-20

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PCT/CN2008/000879 WO2008138212A1 (fr) 2007-05-10 2008-04-29 Système de distillation à tours multiples permettant d'économiser l'énergie

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CN (1) CN201049932Y (fr)
WO (1) WO2008138212A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108059587A (zh) * 2018-02-24 2018-05-22 山东浮来春生物化工有限公司 八塔差压酒精蒸馏生产***及方法
CN111437619A (zh) * 2020-04-21 2020-07-24 广东高科生物工程有限公司 多塔差压节能无水酒精蒸馏***及无水酒精节能生产方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201049932Y (zh) * 2007-05-10 2008-04-23 林国宁 多塔节能蒸馏装置
CN101580457B (zh) * 2008-05-13 2012-11-28 广东中科天元新能源科技有限公司 一种以发酵醪液为原料生产无水乙醇的装置及工艺
CN102716596B (zh) * 2012-07-06 2014-08-06 广东高科生物工程有限公司 一种五塔差压节能酒精蒸馏装置
CN108558602B (zh) * 2018-07-03 2024-06-14 肥城金塔机械科技有限公司 双粗双精四塔四效节能蒸馏生产燃料乙醇***及其使用方法
CN110743189B (zh) * 2019-12-11 2021-07-27 贺源 一种节能型二硫化碳精馏工艺

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003055282A (ja) * 2001-08-09 2003-02-26 Sungrain Kk アルコール蒸留装置
CN1736527A (zh) * 2005-06-30 2006-02-22 广东中科天元再生资源工程有限公司 酒精五塔差压蒸馏装置及其工艺
CN2765650Y (zh) * 2005-03-08 2006-03-22 林国宁 节能蒸馏塔
CN201049932Y (zh) * 2007-05-10 2008-04-23 林国宁 多塔节能蒸馏装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003055282A (ja) * 2001-08-09 2003-02-26 Sungrain Kk アルコール蒸留装置
CN2765650Y (zh) * 2005-03-08 2006-03-22 林国宁 节能蒸馏塔
CN1736527A (zh) * 2005-06-30 2006-02-22 广东中科天元再生资源工程有限公司 酒精五塔差压蒸馏装置及其工艺
CN201049932Y (zh) * 2007-05-10 2008-04-23 林国宁 多塔节能蒸馏装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108059587A (zh) * 2018-02-24 2018-05-22 山东浮来春生物化工有限公司 八塔差压酒精蒸馏生产***及方法
CN108059587B (zh) * 2018-02-24 2024-05-14 国富城投有限公司 八塔差压酒精蒸馏生产***及方法
CN111437619A (zh) * 2020-04-21 2020-07-24 广东高科生物工程有限公司 多塔差压节能无水酒精蒸馏***及无水酒精节能生产方法

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