CN103657130B - External reactor type dimethoxym ethane rectifying column - Google Patents
External reactor type dimethoxym ethane rectifying column Download PDFInfo
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- CN103657130B CN103657130B CN201310638064.XA CN201310638064A CN103657130B CN 103657130 B CN103657130 B CN 103657130B CN 201310638064 A CN201310638064 A CN 201310638064A CN 103657130 B CN103657130 B CN 103657130B
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Abstract
The invention discloses a kind of external reactor type dimethoxym ethane rectifying column, it is primarily of tower body, reactor, filler, input pipe, efferent duct, drawing liquid pump and material pond are formed, the top of described tower body is provided with dimethoxym ethane gas discharge outlet, waste water discharge opening is established in the bottom of tower body, the epimere of tower body is rectifying section, hypomere is rectifying section, described reactor is located at outside tower body, filler is located at the rectifying section in tower body, one end of described input pipe to extend in tower body and is positioned at the top of filler, the other end is connected with the leakage fluid dram of reactor, described material pond is located at the rectifying section in tower body and is positioned at the below of filler, one end of efferent duct is communicated with the bottom in material pond, the other end is connected with the liquid inlet of reactor, described drawing liquid pump is located on efferent duct.Owing to adopting above-mentioned version, described reactor is located at outside tower body, not only facilitates charging, but also greatly facilitate the maintenance to reactor.
Description
Technical field
The present invention relates to a kind of chemical industry equipment, specifically a kind of dimethoxym ethane rectifying column.
Background technology
Reaction rectification method is collection reaction and a kind of special extract rectification technology being separated into one, the process characteristic of course of reaction and the engineering characteristic of separation equipment organically combine by this technology, the centrifugation of rectifying can be utilized to improve the equilibrium conversion of reaction, suppress the generation of series connection side reaction, the fuel factor of exothermic reaction can be utilized again to reduce the energy consumption of rectifying, strengthening mass transfer.Therefore, obtain applying more and more widely in Chemical Manufacture.The experiment that reactive distillation often adopts is the acetal synthetic reaction that esterification under sulfuric acid catalyst exists of acetic acid and ethanol or formaldehyde and methyl alcohol carry out under sulfuric acid catalyst exists.Dimethoxym ethane is C3H8O2.Another name: dimethoxymethane, (the volatilization flammable liquid of structural formula CH2 (OCH3) 2 achromaticity and clarification, has chloroform smell and pungent taste to methylal.Fusing point-104.8 DEG C, relative density (d204) 0.8560, boiling point 44 DEG C, refractive index (n20
d) solubility 32 ℅ in 1.3513,20 DEG C of water, can multi-solvents be dissolved.Purposes: produce ion exchange resin, solvent, spices, thunder rich (synthesis).Reaction medium: formaldehyde (water) 36.5-37.4 ℅ methyl alcohol 64.7 DEG C of first aldehyde – 19.5 DEG C of reaction conditions: control tower top temperature 41.5-42 DEG C of cut and be: the reaction that dimethoxym ethane produces dimethoxym ethane (boiling point 42.3 DEG C) with formaldehyde and carbinol condensation is that object carries out reactive distillation process research.The reaction of synthesizing dimethoxym ethane is: this reaction of 2CH3OH+CH2O=C3H8O2+H2O is the reversible exothermic reaction carried out under acid catalysed conditions, by the restriction of equilibrium conversion, the method be separated afterwards is first reacted according to traditional, even if with the formalin of high concentration (38% ~ 40%) for raw material, the conversion ratio of formaldehyde also can only reach about 60%, a large amount of unreacted rare formaldehyde causes difficulty not only to follow-up separation, and the formic acid produced when rare formaldehyde concentrates is to the seriously corroded of equipment.Adopt the method for reactive distillation then effectively can overcome this thermodynamics obstacle of equilibrium conversion, because the size sequence of each component relative volatility is in this reaction system: α dimethoxym ethane > α methyl alcohol > α formaldehyde > α water, visible, because product dimethoxym ethane has maximum relative volatility, utilize the effect of rectifying it constantly can be separated from system, balance is impelled to move to the direction generating product, increase substantially the equilibrium conversion of formaldehyde, if pulp furnish controls rationally, even can reach close to equilibrium conversion.In addition, adopt reaction rectification technique also tool have the following advantages:
(1) under rational Processes and apparatus condition, qualified dimethoxym ethane product can directly be obtained from tower top.
(2) reaction and separation processes carries out in same equipment, can save cost of equipment and operating cost.
(3) reaction heat is directly used in distillation process, capable of reducing energy consumption.
(4) due to the concentrate effect of rectifying, reduce the concentration requirement of raw material formaldehyde, mass percent is that the formalin of 7%-38% all can directly use.
In existing dimethoxym ethane rectifying column, reactor is located in tower body, thus in process of production, very inconvenient to the maintenance of reactor, there is the shortcoming that maintenance cost is high, intensity is large.
Summary of the invention
The object of this invention is to provide a kind of external reactor type dimethoxym ethane rectifying column facilitating maintenance to reactor.
For achieving the above object, the technical solution adopted in the present invention is:
External reactor type dimethoxym ethane rectifying column, it is primarily of tower body, reactor, filler, input pipe, efferent duct, drawing liquid pump and material pond are formed, the top of described tower body is provided with dimethoxym ethane gas discharge outlet, waste water discharge opening is established in the bottom of tower body, the epimere of tower body is rectifying section, hypomere is rectifying section, described reactor is located at outside tower body, filler is located at the rectifying section in tower body, one end of described input pipe to extend in tower body and is positioned at the top of filler, the other end is connected with the leakage fluid dram of reactor, described material pond is located at the rectifying section in tower body and is positioned at the below of filler, one end of efferent duct is communicated with the bottom in material pond, the other end is connected with the liquid inlet of reactor, described drawing liquid pump is located on efferent duct.
The rectifying section of described tower body is provided with water input, and the waste water discharge opening bottom described tower body is connected with wastewater discharge pipe.
External reactor type dimethoxym ethane rectifying column, also comprise circulation pipe and water pump, one end of described circulation pipe is connected with the tube wall of wastewater discharge pipe, and the other end is connected with water input, and described water pump is located on circulation pipe.
Described dimethoxym ethane gas discharge outlet is connected with condenser by pipeline.
Described reactor, filler, input pipe, efferent duct, drawing liquid pump and material pond form one group, and be provided with many groups altogether, the many groups of rectifying sections along tower body separate distribution from top to bottom.
The upper end of described tower body is provided with suspension hook.
Beneficial effect of the present invention: owing to adopting above-mentioned version, described reactor is located at outside tower body, not only facilitates charging, but also greatly facilitate the maintenance to reactor.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Fig. 1 is structural representation of the present invention.
In figure: 1, tower body; 2, reactor; 3, filler; 4, input pipe; 5, efferent duct; 6, drawing liquid pump; 7, pond is expected; 8, dimethoxym ethane gas discharge outlet; 9, waste water discharge opening; 10, water input; 11, wastewater discharge pipe; 12, circulation pipe; 13, water pump; 14, suspension hook.
Detailed description of the invention
As shown in Figure 1, external reactor type dimethoxym ethane rectifying column, it is primarily of tower body 1, reactor 2, filler 3, input pipe 4, efferent duct 5, drawing liquid pump 6 and material pond 7 are formed, the top of described tower body 1 is provided with dimethoxym ethane gas discharge outlet 8, waste water discharge opening 9 is established in the bottom of tower body 1, the epimere of tower body 1 is rectifying section, hypomere is rectifying section, described reactor 2 is located at outside tower body 1, filler 3 is located at the rectifying section in tower body 1, one end of described input pipe 4 to extend in tower body 1 and is positioned at the top of filler 3, the other end is connected with the leakage fluid dram of reactor 2, described material pond 7 is located at the rectifying section in tower body 1 and is positioned at the below of filler 3, one end of efferent duct 5 is communicated with the bottom in material pond 7, the other end is connected with the liquid inlet of reactor 2, described drawing liquid pump 6 is located on efferent duct 5.Described reactor 2, filler 3, input pipe 4, efferent duct 5, drawing liquid pump 6 and material pond 7 form one group, and be provided with many groups altogether, the many groups of rectifying sections along tower body 1 separate distribution from top to bottom.
The rectifying section of described tower body 1 is provided with water input 10, and the waste water discharge opening 9 bottom described tower body is connected with wastewater discharge pipe 11.Also comprise circulation pipe 12 and water pump 13, one end of described circulation pipe 12 is connected with the tube wall of wastewater discharge pipe 9, and the other end is connected with water input 10, and described water pump 13 is located on circulation pipe 12, and the upper end of described tower body 1 is provided with suspension hook 14.
Described dimethoxym ethane gas discharge outlet 9 is connected with condenser by pipeline.
The above is the preferred embodiment of the present invention; certainly the interest field of the present invention can not be limited with this; should be understood that; for those skilled in the art; technical scheme of the present invention is modified or equivalent replacement, do not depart from the protection domain of technical solution of the present invention.
Claims (6)
1. an external reactor type dimethoxym ethane rectifying column, it is characterized in that: it is primarily of tower body, reactor, filler, input pipe, efferent duct, drawing liquid pump and material pond are formed, the top of described tower body is provided with dimethoxym ethane gas discharge outlet, waste water discharge opening is established in the bottom of tower body, the epimere of tower body is rectifying section, hypomere is rectifying section, described reactor is located at outside tower body, filler is located at the rectifying section in tower body, one end of described input pipe to extend in tower body and is positioned at the top of filler, the other end is connected with the leakage fluid dram of reactor, described material pond is located at the rectifying section in tower body and is positioned at the below of filler, one end of efferent duct is communicated with the bottom in material pond, the other end is connected with the liquid inlet of reactor, described drawing liquid pump is located on efferent duct.
2. external reactor type dimethoxym ethane rectifying column according to claim 1, it is characterized in that: described reactor, filler, input pipe, efferent duct, drawing liquid pump and material pond form one group, be provided with many groups altogether, the many groups of rectifying sections along tower body separate distribution from top to bottom.
3. external reactor type dimethoxym ethane rectifying column according to claim 2, is characterized in that: the rectifying section of described tower body is provided with water input, the waste water discharge opening bottom described tower body is connected with wastewater discharge pipe.
4. external reactor type dimethoxym ethane rectifying column according to claim 3, it is characterized in that: external reactor type dimethoxym ethane rectifying column, also comprise circulation pipe and water pump, one end of described circulation pipe is connected with the tube wall of wastewater discharge pipe, the other end is connected with water input, and described water pump is located on circulation pipe.
5. external reactor type dimethoxym ethane rectifying column according to claim 4, is characterized in that: described dimethoxym ethane gas discharge outlet is connected with condenser by pipeline.
6. external reactor type dimethoxym ethane rectifying column according to claim 1, is characterized in that: the upper end of described tower body is provided with suspension hook.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310638064.XA CN103657130B (en) | 2013-12-03 | 2013-12-03 | External reactor type dimethoxym ethane rectifying column |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310638064.XA CN103657130B (en) | 2013-12-03 | 2013-12-03 | External reactor type dimethoxym ethane rectifying column |
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| CN103657130A CN103657130A (en) | 2014-03-26 |
| CN103657130B true CN103657130B (en) | 2015-09-09 |
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| CN103896747A (en) * | 2014-04-08 | 2014-07-02 | 江苏凯茂石化科技有限公司 | Backpack type circulation production process device of high-concentration methylal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786946A (en) * | 2010-04-01 | 2010-07-28 | 江苏恒茂机械制造有限公司 | Methylal preparation device |
| CN201686631U (en) * | 2010-04-01 | 2010-12-29 | 江苏恒茂机械制造有限公司 | Methylal production device |
| CN202490457U (en) * | 2012-04-01 | 2012-10-17 | 中国石油化工股份有限公司 | Catalyst distillation tower |
| CN203648117U (en) * | 2013-12-03 | 2014-06-18 | 惠州市利而安化工有限公司 | Methylal rectifying tower with external reactor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7534922B2 (en) * | 2004-12-13 | 2009-05-19 | Ticona Gmbh | Processes for the manufacture of acetals |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101786946A (en) * | 2010-04-01 | 2010-07-28 | 江苏恒茂机械制造有限公司 | Methylal preparation device |
| CN201686631U (en) * | 2010-04-01 | 2010-12-29 | 江苏恒茂机械制造有限公司 | Methylal production device |
| CN202490457U (en) * | 2012-04-01 | 2012-10-17 | 中国石油化工股份有限公司 | Catalyst distillation tower |
| CN203648117U (en) * | 2013-12-03 | 2014-06-18 | 惠州市利而安化工有限公司 | Methylal rectifying tower with external reactor |
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| CN103657130A (en) | 2014-03-26 |
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