CN201815138U - Methanol condensing device in DBE (dibasic ester) production - Google Patents
Methanol condensing device in DBE (dibasic ester) production Download PDFInfo
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- CN201815138U CN201815138U CN2010205326724U CN201020532672U CN201815138U CN 201815138 U CN201815138 U CN 201815138U CN 2010205326724 U CN2010205326724 U CN 2010205326724U CN 201020532672 U CN201020532672 U CN 201020532672U CN 201815138 U CN201815138 U CN 201815138U
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- methanol
- condensing device
- tube condenser
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Abstract
The utility model discloses a methanol condensing device in DBE (dibasic ester) production, which comprises a shell and tube condenser and further comprises a buffering and condensing device arranged in the upstream position of the shell and tube condenser; the buffering and condensing device is a glass-lined disk type condenser; and the material outlet of the glass-lined disk type condenser is communicated with the material inlet of the shell and tube condenser. By adopting the methanol condensing device provided by the utility model, scouring and erosion to the shell and tube condenser caused by sulfuric acid gas are alleviated, the service life of a shell and tube heat exchanger is prolonged, the equipment investment is reduced, the condensing effect to methanol gas is improved, and the production efficiency is improved.
Description
Technical field
The utility model relates to the chemical industry equipment field, relates in particular to the methanol condensed device in a kind of mixed dibasic acid dimethyl ester production.
Background technology
Mixed dibasic acid dimethyl ester (DBE) is a kind of high boiling solvent, is to be formed with methanol esterification by the byproduct dicarboxylic acids (mixed dibasic acid of C4, C5, C6) that the production adipic acid brings.The DBE solvent has the boiling point height, distillate evenly, the smell gentleness, low and the biodegradable characteristics of energy of toxicity, has superpower solvability, the title that alembroth is arranged, it and polyurethane resin, acrylic resin, mylar, the compatibility of epoxy resin is superior, can extensively replace ketone (as cyclohexanone, isophorone etc.), ethers is (as ethylene glycol monobutyl ether, propylene glycol monomethyl ether etc.), the ester class is (as ethylene glycol ether acetate, 1-Methoxy-2-propyl acetate etc.) wait each kind solvent, be widely used in coil coating, coatings for tin plate printing, car paint, woodcare paint, printing ink, the synthetic industry of jet ink and resin etc.
In the production of DBE, in mixed dibasic acid and methanol esterification course of reaction, the gas methyl alcohol of generation generally adopts condenser condenses to become liquid, carries out rectifying and gets refined methanol with being pumped into the methanol rectification operation again.But make catalyst because in esterification reaction process, need to add sulfuric acid, therefore just having part of sulfuric acid is taken out of by methanol gas and enters condenser, because of the dilute sulfuric acid gas attack very strong, and pressure is bigger when entering condenser, impulsive force and corrosivity to condenser pipe are all very strong, therefore condenser must be made of resistant material, and the stainless steel material of common material is under the erosion corrosion of sulfur acid gas, the damage that just is corroded of short some months, promptly use the 316L stainless steel, also be no more than 1 year service life.
Summary of the invention
Technical problem to be solved in the utility model is: at the deficiency that prior art exists, provide that a kind of condensation effect is good, the methanol condensed device of the mixed dibasic acid dimethyl ester of long service life in producing.
For solving the problems of the technologies described above, the technical solution of the utility model is:
Methanol condensed device during mixed dibasic acid dimethyl ester is produced comprises shell and tube condenser, and described condensing unit also comprises the buffering condensing unit that is arranged on described shell and tube condenser upstream position.
Described buffering condensing unit is the enamel disc-type condenser, and the material outlet of described enamel disc-type condenser is communicated with the material inlet of described shell and tube condenser.
Owing to adopted technique scheme, the beneficial effects of the utility model are:
Methanol condensed device of the present utility model is provided with the enamel disc-type condenser at the upstream position of shell and tube condenser, the methyl alcohol that has sulfuric acid gas at first carries out just cold in the enamel disc-type condenser, the sulfuric acid condensation of gas is become dilute sulfuric acid, enter shell and tube condenser then, not only reduced the temperature and pressure of sulfuric acid gas, alleviated of the erosion corrosion of sulfuric acid gas to shell and tube condenser, prolonged the service life of tubular heat exchanger, reduced equipment investment, and when relatively using tubular heat exchanger separately in the prior art, improved condensation effect, improved production efficiency methanol gas.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Accompanying drawing is the structural representation of the utility model embodiment.
Among the figure, 1. enamel disc-type condenser; 11. enamel disc-type condenser material inlet; 12. enamel disc-type condenser material outlet; 2. shell and tube condenser; 21. shell and tube condenser material inlet; 22. shell and tube condenser material outlet.
The specific embodiment
As shown in drawings, methanol condensed device during mixed dibasic acid dimethyl ester is produced, comprise the shell and tube condenser 1 that is provided with shell and tube condenser material inlet 21 and shell and tube condenser material outlet 22, with the enamel disc-type condenser 1 that is provided with enamel disc-type condenser material inlet 11 and enamel disc-type condenser material outlet, described enamel disc-type condenser material outlet 12 is communicated with described shell and tube condenser material inlet 21.
During the utility model work, the gas that esterification produces at first from enamel disc-type condenser material inlet 11 enter carry out in the enamel disc-type condenser 1 just cold, the cooling effect of disc-type enamel condenser 1 is relatively poor, but this material is not afraid of the erosion corrosion of any sour gas, after cold at the beginning of the enamel condenser 1, the temperature and pressure of uncondensed gas all reduces greatly, after the sulfuric acid condensation of gas becomes dilute sulfuric acid, enter shell and tube condenser 2 from shell and tube condenser material inlet 21, condensation of gas is become liquid, owing to reduced the temperature and pressure of sulfuric acid gas, alleviated of the erosion corrosion of sulfuric acid gas, prolonged the service life of tubular heat exchanger 2 shell and tube condenser 2.
Claims (2)
1. the methanol condensed device during mixed dibasic acid dimethyl ester is produced comprises shell and tube condenser, and it is characterized in that: described condensing unit also comprises the buffering condensing unit that is arranged on described shell and tube condenser upstream position.
2. the methanol condensed device during mixed dibasic acid dimethyl ester as claimed in claim 1 is produced, it is characterized in that: described buffering condensing unit is the enamel disc-type condenser, and the material outlet of described enamel disc-type condenser is communicated with the material inlet of described shell and tube condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205326724U CN201815138U (en) | 2010-09-17 | 2010-09-17 | Methanol condensing device in DBE (dibasic ester) production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205326724U CN201815138U (en) | 2010-09-17 | 2010-09-17 | Methanol condensing device in DBE (dibasic ester) production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201815138U true CN201815138U (en) | 2011-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205326724U Expired - Fee Related CN201815138U (en) | 2010-09-17 | 2010-09-17 | Methanol condensing device in DBE (dibasic ester) production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201815138U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108358746A (en) * | 2018-04-12 | 2018-08-03 | 南通山剑防腐科技有限公司 | A kind of chloroethanes piece-rate system |
-
2010
- 2010-09-17 CN CN2010205326724U patent/CN201815138U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108358746A (en) * | 2018-04-12 | 2018-08-03 | 南通山剑防腐科技有限公司 | A kind of chloroethanes piece-rate system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20130917 |