CN207775118U - Energy-saving methyl formate process units - Google Patents
Energy-saving methyl formate process units Download PDFInfo
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- CN207775118U CN207775118U CN201721920413.7U CN201721920413U CN207775118U CN 207775118 U CN207775118 U CN 207775118U CN 201721920413 U CN201721920413 U CN 201721920413U CN 207775118 U CN207775118 U CN 207775118U
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- Prior art keywords
- methyl formate
- methanol
- condenser
- heater
- tower
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model discloses a kind of energy-saving methyl formate process units, including the methanol reaction zone being connected and methyl formate rectification zone；Methanol reaction zone includes methanol basin, methanol pump, heater, vaporization tower, heat exchanger, superheater and the dehydrogenation reactor being sequentially communicated；Heat exchanger is connected to dehydrogenation reactor and heater respectively；Methyl formate rectification zone includes the rectifying column being sequentially communicated, condenser, gas-liquid separator and scrubbing tower；Rectifying column is connected to scrubbing tower, heater and vaporization tower respectively.During preparing methyl formate, consume energy the present apparatus low, high income.
Description
Technical field
The utility model belongs to methyl formate preparing technical field, and in particular to a kind of energy-saving methyl formate production dress
It sets.
Background technology
Methyl formate is typically all to be prepared by methanol dehydrogenation, is usually to pass through methyl formate gas in traditional handicraft
It crosses condenser and is cooled to room temperature, into scrubbing tower, then with the methanol after chilled brine freezing to the methyl formate in gas
It is absorbed, methyl esters rectifying column is entered after the mixed liquor after absorption is preheated, this technique is first by gas cooling, and absorbing liquid is with cold
Freeze brine-cooled, reabsorb, absorption is over and heats, this part energy causes great waste.
Utility model content
For above-mentioned deficiency in the prior art, a kind of energy-saving methyl formate process units of the utility model offer can have
Effect solves existing apparatus energy consumption height, the low problem of efficiency.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of energy-saving methyl formate process units, including the methanol reaction zone being connected and methyl formate rectifying are provided
Area；
Methanol reaction zone include the methanol basin being sequentially communicated, methanol pump, heater, vaporization tower, heat exchanger, superheater with
And dehydrogenation reactor；Heat exchanger is connected to dehydrogenation reactor and heater respectively；
Methyl formate rectification zone includes the rectifying column being sequentially communicated, condenser, gas-liquid separator and scrubbing tower；Rectifying column
It is connected to respectively with scrubbing tower, heater and vaporization tower.
Preferably, condenser includes the first condenser and the second condenser being connected；First condenser and the second condensation
Device is connected to rectifying column and gas-liquid separator respectively.
Preferably, scrubbing tower is also connected to methanol subcooler.
The beneficial effects of the utility model are：
1, the methyl formate gas come out from dehydrogenation reactor enters in heat exchanger, and heat is carried out with the methanol steam newly entered
After exchange, enters back into heater and continue to carry out heat exchange with the methanol newly entered, reaching makes the formic acid first with amount of heat
Ester gas heat reduces, and reduces condenser negative pressure, reduces the purpose of heat waste in preparation process.
2, heat exchange is carried out by methanol and methyl formate gas, absorb methyl formate gas heat and rectifying column with
Vaporization tower is directly connected to so that tower bottom liquid is returned directly to vaporization tower, can effectively reduce energy during preparing methyl formate
Waste, promoted preparation efficiency.
3, it under the cooperation of each component of the present apparatus, can effectively realize during preparing methyl formate, reduce energy
Consumption and waste, save energy, reduce the purpose of production cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present apparatus.
Wherein, 1, methanol basin；2, methanol pump；3, heater；4, vaporization tower；5, heat exchanger；6, superheater；7, dehydrogenation is anti-
Answer device；8, rectifying column；9, the first condenser；10, the second condenser；11, gas-liquid separator；12, scrubbing tower；13, methanol is subcooled
Device.
Specific implementation mode
Specific embodiment of the present utility model is described below, in order to facilitate understanding by those skilled in the art
The utility model, it should be apparent that the utility model is not limited to the range of specific implementation mode, to the common skill of the art
For art personnel, if various change the attached claims limit and determine the utility model spirit and scope in,
These variations are it will be apparent that all are created using the utility model of the utility model design in the row of protection.
As shown in Figure 1, the energy-saving methyl formate process units, including the methanol reaction zone being connected and methyl formate essence
Evaporate area, wherein methanol reaction zone include the methanol basin 1 being sequentially communicated, methanol pump 2, heater 3, vaporization tower 4, heat exchanger 5,
Superheater 6 and dehydrogenation reactor 7.
As shown in Figure 1, heat exchanger 5 is connected to dehydrogenation reactor 7 and heater 3 respectively.
As shown in Figure 1, methyl formate rectification zone include the rectifying column 8 being sequentially communicated, condenser, gas-liquid separator 11 and
Scrubbing tower 12；Wherein, rectifying column 8 is connected to scrubbing tower 12, heater 3 and vaporization tower 4 respectively.
As shown in Figure 1, condenser includes the first condenser 9 and the second condenser 10 being connected, the first condenser 9 and
Two condensers 10 are separately provided for the chilled brine condensed；And first condenser 9 and the second condenser 10 respectively with
Rectifying column 8 is connected to gas-liquid separator 11.
As shown in Figure 1, scrubbing tower 12 is also connected to methanol subcooler 13.
Methanol from methanol basin 1 enters vaporization tower 4 after the pressurization of methanol pump 2 after the heating of heater 3, then distinguishes
Cross dehydrogenation reactor 7 after heat exchanger 5, superheater 6, it is anti-that dehydrogenation occurs for catalyst in dehydrogenation reactor 7 under the action of
It answers, 100~230 DEG C of reaction temperature obtains methyl formate gas, and the methyl formate gas come out from dehydrogenation reactor 7 passes through again
After heat exchanger 5 and the methanol steam newly entered carry out heat exchange, enters back into heater 3 and continue and carry out heat exchange, at this time instead
20~60 DEG C of device temperature is answered, then gas is directly entered rectifying column 8 by heater 3 and carries out rectifying, and methyl formate and reaction are produced
Raw hydrogen, through the first condenser 9 and the second condenser 10, is condensed from 8 tower top of rectifying column with chilled brine, enters gas after cooling
Liquid/gas separator 11 is detached, and liquid is formic ether product, and gas is mainly hydrogen and a small amount of methyl formate, then gas into
Enter the washing of scrubbing tower 12.And 8 tower bottom liquid main matter of rectifying column is methanol, 20~65 DEG C of temperature is returned directly to vaporization tower 4.
Specific implementation mode is described in detail, but should not be construed as the restriction to the protection domain of this patent.
In range described by claims, various modifications and deformation that those skilled in the art can make without creative work
Still belong to the protection domain of this patent.
Claims (3)
1. a kind of energy-saving methyl formate process units, which is characterized in that including the methanol reaction zone being connected and methyl formate
Rectification zone；
The methanol reaction zone includes the methanol basin (1) being sequentially communicated, methanol pump (2), heater (3), vaporization tower (4), changes
Hot device (5), superheater (6) and dehydrogenation reactor (7)；The heat exchanger (5) respectively with dehydrogenation reactor (7) and heater
(3) it is connected to；
The methyl formate rectification zone includes the rectifying column (8) being sequentially communicated, condenser, gas-liquid separator (11) and scrubbing tower
(12)；The rectifying column (8) is connected to scrubbing tower (12), heater (3) and vaporization tower (4) respectively.
2. energy-saving methyl formate process units according to claim 1, which is characterized in that the condenser includes being connected
Logical the first condenser (9) and the second condenser (10)；First condenser (9) and the second condenser (10) respectively with rectifying
Tower (8) is connected to gas-liquid separator (11).
3. energy-saving methyl formate process units according to claim 1, which is characterized in that the scrubbing tower (12) also with
Methanol subcooler (13) is connected to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721920413.7U CN207775118U (en) | 2017-12-29 | 2017-12-29 | Energy-saving methyl formate process units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721920413.7U CN207775118U (en) | 2017-12-29 | 2017-12-29 | Energy-saving methyl formate process units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207775118U true CN207775118U (en) | 2018-08-28 |
Family
ID=63223123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721920413.7U Active CN207775118U (en) | 2017-12-29 | 2017-12-29 | Energy-saving methyl formate process units |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207775118U (en) |
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2017
- 2017-12-29 CN CN201721920413.7U patent/CN207775118U/en active Active
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