CN1134931A - Distillation equipment for crystallized mother liquor in the prodn. of amino acetic acid - Google Patents
Distillation equipment for crystallized mother liquor in the prodn. of amino acetic acid Download PDFInfo
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- CN1134931A CN1134931A CN 95104300 CN95104300A CN1134931A CN 1134931 A CN1134931 A CN 1134931A CN 95104300 CN95104300 CN 95104300 CN 95104300 A CN95104300 A CN 95104300A CN 1134931 A CN1134931 A CN 1134931A
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- reboiler
- section
- stripping section
- rectifying section
- rectifying
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
This installation is used to recover methanol from the mother liquor of amino acetic acid prodn. and is composed of raw material pump, preheater, reboier 3, reboiler 4, fractional distillation section, rectification section, condenser, cooler and other auxiliary equipment. Its characteristics is that there is fitted with a reboler 3 between fractional distillation section and rectification section.
Description
The present invention reclaims the water distilling apparatus that Padil is produced methyl alcohol in the crystalline mother solution with continuous distillation method.Crystalline mother solution is for containing ammonium chloride in the Padil production, the methanol aqueous solution of salt such as Padil, because the corrodibility of ammonium chloride, prior art is generally and utilizes the batch fractionating device to reclaim methyl alcohol at present, and processing power is little, energy consumption is high, yield is low, restricting and producing.If adopt general continuous distillation method to reclaim methyl alcohol, facility investment is big, and heating steam pressure need remain on more than the 0.5MPa.
Task of the present invention provides a kind of water distilling apparatus that reclaims methyl alcohol from Padil production crystalline mother solution little, that energy consumption is low of investing, and this device mainly is made of feedstock pump 1, preheater 2, reboiler 3, reboiler 4, stripping section 5, downtake 6, riser 7, rectifying section 8, condenser 9, water cooler 10 and other supplementary unit.It is characterized in that between stripping section 5 and rectifying section 8, reboiler 3 being set, see figure.F is the Padil crystalline mother solution among the figure, and D is a product, and W is a raffinate, and S is heating steam, and N is a water of condensation, and L, L1 are water coolant.
Continuous rectification apparatus of the present invention is divided into stripping section 5 and rectifying section 8 to rectifying tower, and reboiler 3 is set between two sections.Reboiler 3 can place rectifying section 8 bottoms and rectifying section 8 to become one, and also can place lower position to be connected by pipeline with rectifying section 8 bottoms.Rectifying section 8 is connected with riser 7 by downtake 6 with stripping section 5.Bottom and stripping section 5 that reboiler 4 is arranged on stripping section 5 become one, and also can place lower position to be connected by pipeline with stripping section 5 bottoms.Reboiler 3 provides the main gas phase of rectifying section 8 to reflux.Reboiler 4 provides the gas phase of stripping section 5 to reflux.Condenser 9 is supplied with rectifying section 8 liquid-phase refluxs and products thereof.The dirty liquid of stripping section 5 is managed 6 supplies by rectifying section 8 bottoms night through falling.The rising steam of stripping section 5 then enters rectifying section 8 by riser 7.
Rectifying section 8 of the present invention and stripping section 5 are tray column or packing tower.Preheater 2, reboiler 3, reboiler 4, condenser 9, water cooler 10 are recuperative heat exchanger, as shell and tube heat exchanger, jacketed pipe heat exchanger, plate-type heat exchanger.Preheater 2 and water cooler 8 according to circumstances can be provided with, and also can not be provided with.Also some intermediate storage tank, supplementary units such as gas-water separation can be set as required.
Reboiler 3 of the present invention, reboiler 4, stripping section 5 adopt the impregnating material manufacturing, as graphite, enamel, pottery, titanium material, steel alloy etc.Other parts adopt material manufacturings such as carbon steel, steel alloy, aluminium, copper.
According to the present invention, reboiler 3 is arranged on the bottom of rectifying section 8, and this place's material boiling point is 65--80 ℃, so the heating of available low pressure water vapor just can guarantee bigger heat transfer temperature difference.
Characteristics of the present invention are that the serialization of crystalline mother solution was handled during Padil was produced.Processing power is big, and energy consumption is low, available low pressure water vapor heating.
The present invention can illustrate by application example, as shown in the figure, the reboiler 3 in this device, reboiler 4 is a graphite heat exchanger, and rectifying section 8 is a tray column, and stripping section 5 is a packing tower, and preheater 2, condenser 9, water cooler 10 are shell and tube heat exchanger.Technological process is described below: crystalline mother solution was mixed by the liquid of feedstock pump 1 preheater 2 and rectifying section 8 during Padil was produced, and entered reboiler 3 heating, and partial gasification enters rectifying section 8 rectifying.Overhead vapours is through condenser 9 condensations, partial reflux, part after water cooler 10 coolings as product.The partially liq overflow of rectifying section 8 bottoms is gone into stripping section 5 and is reclaimed methyl alcohol, and raffinate is displaced into the salt retrieving arrangement from the bottom.Reboiler 3 heating water vapor pressures are 0.2MPa, and reboiler 4 heating water vapor pressures are 0.4MPa.
Claims (6)
1. one kind is reclaimed the water distilling apparatus that Padil is produced methyl alcohol in the crystalline mother solution with continuous distillation method.It is characterized in that between stripping section 5 and rectifying section 8, reboiler 3 being set, reboiler 4 is set in the bottom of stripping section 5.
2. can place rectifying section 8 bottoms and rectifying section 8 to become one according to claim 1 reboiler 3, also can place lower position to be connected by the bottom of pipeline with rectifying section 8.
3. can place stripping section 5 bottoms and stripping section 5 to become one according to claim 1 reboiler 4, also can place lower position to be connected by the bottom of pipeline with stripping section 5.
4. be connected with riser 7 by downtake 6 with stripping section 5 according to claim 1 rectifying section 8.
5. be tray column or packing tower according to described rectifying section 8 of claim 1 and stripping section 5.
6. be recuperative heat exchanger according to claim 1 reboiler 3, reboiler 4, condenser 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95104300 CN1134931A (en) | 1995-05-04 | 1995-05-04 | Distillation equipment for crystallized mother liquor in the prodn. of amino acetic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95104300 CN1134931A (en) | 1995-05-04 | 1995-05-04 | Distillation equipment for crystallized mother liquor in the prodn. of amino acetic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1134931A true CN1134931A (en) | 1996-11-06 |
Family
ID=5075095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95104300 Pending CN1134931A (en) | 1995-05-04 | 1995-05-04 | Distillation equipment for crystallized mother liquor in the prodn. of amino acetic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1134931A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369822C (en) * | 2006-04-28 | 2008-02-20 | 石家庄东华金龙化工有限公司 | Method for treating mother liquor discharged from amino acetic acid production |
| CN101456606B (en) * | 2008-12-17 | 2011-04-06 | 天津大学 | Technique and apparatus for implementing fat phase and aqueous phase separation for wastewater by stripping method |
| CN105579107A (en) * | 2013-08-23 | 2016-05-11 | 环球油品公司 | Fractionation system having rectifying and stripping columns in single vessel with uniform diameter |
| CN112851475A (en) * | 2021-01-25 | 2021-05-28 | 中国科学院过程工程研究所 | Efficient and energy-saving process for recovering methanol from aminoacetic acid mother liquor |
| CN115710160A (en) * | 2022-11-17 | 2023-02-24 | 安徽金禾实业股份有限公司 | Method for extracting refined methanol from amination dealcoholization receiving tank residual liquid |
-
1995
- 1995-05-04 CN CN 95104300 patent/CN1134931A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369822C (en) * | 2006-04-28 | 2008-02-20 | 石家庄东华金龙化工有限公司 | Method for treating mother liquor discharged from amino acetic acid production |
| CN101456606B (en) * | 2008-12-17 | 2011-04-06 | 天津大学 | Technique and apparatus for implementing fat phase and aqueous phase separation for wastewater by stripping method |
| CN105579107A (en) * | 2013-08-23 | 2016-05-11 | 环球油品公司 | Fractionation system having rectifying and stripping columns in single vessel with uniform diameter |
| EP3036023B1 (en) * | 2013-08-23 | 2019-10-09 | Uop Llc | Fractionation system having rectifying and stripping columns in a single vessel with a uniform diameter |
| CN105579107B (en) * | 2013-08-23 | 2020-04-10 | 环球油品公司 | Fractionation system having a rectifying column and a stripping column in a single vessel of uniform diameter |
| CN112851475A (en) * | 2021-01-25 | 2021-05-28 | 中国科学院过程工程研究所 | Efficient and energy-saving process for recovering methanol from aminoacetic acid mother liquor |
| CN115710160A (en) * | 2022-11-17 | 2023-02-24 | 安徽金禾实业股份有限公司 | Method for extracting refined methanol from amination dealcoholization receiving tank residual liquid |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |