CN207775118U - Energy-saving methyl formate process units - Google Patents

Energy-saving methyl formate process units Download PDF

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Publication number
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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China
Prior art keywords
methyl formate
methanol
condenser
heater
tower
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CN201721920413.7U
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Chinese (zh)
Inventor
李卓谦
王建忠
李忠俐
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CHENGDU SHENGLIDA TECHNOLOGY Co Ltd
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CHENGDU SHENGLIDA TECHNOLOGY Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process 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

Energy-saving methyl formate process units
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.
CN201721920413.7U 2017-12-29 2017-12-29 Energy-saving methyl formate process units Active CN207775118U (en)

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

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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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