CN103657130A - External-arrangement reactor type methylal rectifying tower - Google Patents
External-arrangement reactor type methylal rectifying tower Download PDFInfo
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- CN103657130A CN103657130A CN201310638064.XA CN201310638064A CN103657130A CN 103657130 A CN103657130 A CN 103657130A CN 201310638064 A CN201310638064 A CN 201310638064A CN 103657130 A CN103657130 A CN 103657130A
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Abstract
The invention discloses an external-arrangement reactor type methylal rectifying tower which is mainly composed of a tower body, reactors, a filler, input pipes, output pipes, infusion pumps and material pools. The top of the tower body is provided with a methylal gas discharge port, the bottom of the tower body is provided with a waste water discharge port, an upper section of the tower body is a rectifying section, and a lower section of the tower body is a purification section; the reactors are arranged outside the tower body; the filler is arranged at the rectifying section of the tower body; one end of each input pipe stretches into the tower body and is located above the filler, and the other end of each input pipe is connected with a liquid discharge port of the reactor; the material pools are arranged at the rectifying section of the tower body and are located below the filler; one end of each output pipe is communicated with the bottom of the material pool, and the other end of each output pipe is connected with a liquid inlet of the reactor; the infusion pumps are arranged on the output pipes. Because of adopting of the above structural form, the reactors are arranged outside the tower body, so as to be convenient for charging, and be also greatly convenient for maintenance of the reactors.
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 that is separated into one, this technology organically combines the engineering characteristic of the process characteristic of course of reaction and separation equipment, can utilize the centrifugation of rectifying to improve the equilibrium conversion of reaction, suppress the generation of series connection side reaction, can utilize again the energy consumption of the fuel factor reduction rectifying of exothermic reaction, strengthening mass transfer.Therefore, in Chemical Manufacture, obtain applying more and more widely.The experiment that reactive distillation often adopts is the acetic acid acetal synthetic reaction that the esterification under sulfuric acid catalyst exists or formaldehyde and methyl alcohol carry out under sulfuric acid catalyst existence with ethanol.Dimethoxym ethane is C3H8O2.Another name: dimethoxymethane, (the volatilization flammable liquid of structural formula CH2 (OCH3) 2 achromaticity and clarifications, has chloroform smell and pungent taste to methylal.Fusing point-104.8 ℃, relative density (d204) 0.8560,44 ℃ of boiling points, refractive index (n20
d) solubility 32 ℅ in 1.3513,20 ℃ of water, can dissolve multi-solvents.Purposes: produce ion exchange resin, solvent, spices, thunder rich (synthesizing).Reaction medium: 19.5 ℃ of reaction conditions of 64.7 ℃ of first aldehyde – of formaldehyde (water) 36.5-37.4 ℅ methyl alcohol: control 41.5-42 ℃ of cut of tower top temperature and be: dimethoxym ethane be take reacting as object of formaldehyde and methyl alcohol condensation production dimethoxym ethane (42.3 ℃ of boiling points) and carried out reactive distillation process research.The reaction of synthesizing dimethoxym ethane is: this reaction of 2CH3OH+CH2O=C3H8O2+H2O is the reversible exothermic reaction carrying out under acid catalysis condition, be subject to the restriction of equilibrium conversion, if adopt traditional rear separated method of first reaction, even if the formalin (38%～40%) of high concentration of take is raw material, the conversion ratio of formaldehyde also can only reach 60% left and right, a large amount of unreacted rare formaldehyde causes difficulty not only to follow-up separation, and the seriously corroded of the formic acid that produces when concentrated of rare formaldehyde to equipment.Adopt the method for reactive distillation can effectively 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, impel balance to move to the direction that generates product, increase substantially the equilibrium conversion of formaldehyde, if raw material proportioning is controlled rationally, even can reach and approach equilibrium conversion.In addition, adopt reaction rectification technique also tool have the following advantages:
(1) under rational Processes and apparatus condition, can directly obtain qualified dimethoxym ethane product 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, the concentration requirement of raw material formaldehyde is reduced, the formalin that mass percent is 7%-38% all can directly be used.
In existing dimethoxym ethane rectifying column, reactor is provided in a side of in tower body, therefore in process of production, very inconvenient to the maintenance of reactor, has 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 having facilitated the maintenance of reactor.
For achieving the above object, the technical solution adopted in the present invention is:
External reactor type dimethoxym ethane rectifying column, it is mainly by tower body, reactor, filler, input pipe, efferent duct, drawing liquid pump and material pond form, 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 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, the bottom in the Yu Liao pond, one end of efferent duct is communicated with, 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, on the waste water discharge opening of described tower body bottom, is connected with wastewater discharge pipe.
External reactor type dimethoxym ethane rectifying column, also comprises circulation pipe and water pump, and 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, are provided with altogether many groups, and the many groups of rectifying sections along tower body are separated 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, has not only facilitated charging, but also greatly facilitated 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, material pond; 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.
The specific embodiment
As shown in Figure 1, external reactor type dimethoxym ethane rectifying column, it is mainly by tower body 1, reactor 2, filler 3, input pipe 4, efferent duct 5, drawing liquid pump 6 and material pond 7 form, 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 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, the bottom in the Yu Liao pond, one end 7 of efferent duct 5 is communicated with, 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, are provided with altogether many groups, and the many groups of rectifying sections along tower body 1 are separated distribution from top to bottom.
The rectifying section of described tower body 1 is provided with water input 10, on the waste water discharge opening 9 of described tower body bottom, 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 can not limit with this interest field of the present invention; should be understood that; for those skilled in the art; technical scheme of the present invention is modified or is equal to 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 mainly by tower body, reactor, filler, input pipe, efferent duct, drawing liquid pump and material pond form, 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 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, the bottom in the Yu Liao pond, one end of efferent duct is communicated with, 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 altogether many groups, the many groups of rectifying sections along tower body are separated 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, on the waste water discharge opening of described tower body bottom, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
|---|---|---|---|
| CN201310638064.XA CN103657130B (en) | 2013-12-03 | 2013-12-03 | External reactor type dimethoxym ethane rectifying column |
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| CN103657130A true CN103657130A (en) | 2014-03-26 |
| CN103657130B CN103657130B (en) | 2015-09-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060129000A1 (en) * | 2004-12-13 | 2006-06-15 | Ticona Gmbh | Processes for the manufacture of acetals |
| 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 |
-
2013
- 2013-12-03 CN CN201310638064.XA patent/CN103657130B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060129000A1 (en) * | 2004-12-13 | 2006-06-15 | Ticona Gmbh | Processes for the manufacture of acetals |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN103657130B (en) | 2015-09-09 |
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