CN111056919A - Liquid sodium methoxide manufacturing system - Google Patents
Liquid sodium methoxide manufacturing system Download PDFInfo
- Publication number
- CN111056919A CN111056919A CN201911048591.9A CN201911048591A CN111056919A CN 111056919 A CN111056919 A CN 111056919A CN 201911048591 A CN201911048591 A CN 201911048591A CN 111056919 A CN111056919 A CN 111056919A
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- China
- Prior art keywords
- methanol
- liquid
- heat exchanger
- evaporator
- sodium
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/68—Preparation of metal alcoholates
- C07C29/70—Preparation of metal alcoholates by converting hydroxy groups to O-metal groups
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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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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a liquid sodium methoxide manufacturing system, relates to a methanol manufacturing process, and solves the technical problem that heat energy is not recovered in the process flow in the prior art. Including methyl alcohol liquid storage equipment, methyl alcohol evaporimeter and methyl alcohol and sodium hybrid module, the methyl alcohol liquid warp in the storage equipment the methyl alcohol evaporimeter carries to methyl alcohol and sodium hybrid module methyl alcohol liquid storage equipment with install at least one indirect heating equipment between the methyl alcohol evaporimeter, methyl alcohol and sodium hybrid module's discharge product carry extremely indirect heating equipment can heat the methyl alcohol solution. The invention is used for perfecting the methanol manufacturing process and meeting the requirements of people on energy conservation and environmental protection in the production of sodium methoxide.
Description
Technical Field
The invention belongs to the technical field of sodium methoxide manufacturing processes, and particularly relates to a liquid sodium methoxide manufacturing system.
Background
The sodium methoxide is prepared by mixing solid sodium hydroxide and methanol according to a certain proportion, stirring and dissolving the mixture, then settling and clarifying the mixture to remove solid impurities, pumping clear liquid into the top of a reaction dehydration tower by using a pump, adding refined methanol steam into the tower from the bottom of the tower for continuous reaction and dehydration, obtaining a product from the bottom of the tower, taking out hydrous methanol steam from the top of the tower, and then refining the hydrous methanol steam in a rectification system, wherein the anhydrous methanol is returned for use. The process in the prior art directly discharges waste products, and wastes a large amount of heat energy.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The application provides a liquid sodium methoxide manufacturing system solves the technical problem that prior art's process flow does not retrieve heat energy. The technical scheme of the scheme has a plurality of technical effects, which are shown below.
The utility model provides a liquid sodium methoxide manufacturing system, methanol liquid storage device, methanol evaporator and methanol and sodium hybrid module, methanol liquid warp in the storage device the methanol evaporator carries to methanol and sodium hybrid module methanol liquid storage device with install at least one indirect heating equipment between the methanol evaporator, methanol and sodium hybrid module's discharge product carry extremely indirect heating equipment can heat the methanol solution.
In a preferred or alternative embodiment, the heat exchange device is a heat exchanger.
In a preferred or alternative embodiment, the heat exchanger comprises a first heat exchanger and a second heat exchanger which are communicated with each other, and the methanol liquid in the methanol liquid storage device is heated by the heat exchanger and then is conveyed to the methanol evaporator.
In a preferred or alternative embodiment, the first heat exchanger can be in communication with a reaction column comprised by the methanol and sodium mixing assembly, the bottom stream of the reaction column being capable of heating the methanol liquid. In a preferred or alternative embodiment, the methanol and sodium mixing assembly further comprises a re-evaporator and a lye heater in communication with each other, the second heat exchanger being capable of communicating with the re-evaporator and the lye heater waste discharge.
In a preferred or alternative embodiment, the second heat exchanger is further connected with an automatic condensed water pump, and the hot gas exhausted by the methanol and sodium mixing assembly is conveyed to the automatic condensed water pump.
The technical beneficial effects of the present case:
at least one heat exchange device is arranged between the methanol liquid storage device and the methanol evaporator, and the discharged product of the methanol and sodium mixing component is conveyed to the heat exchange device to heat the methanol solution, so that the heat energy used for evaporation of the evaporator is reduced, and the energy consumption of the whole process system is greatly saved.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a liquid sodium methoxide production system according to the present invention;
fig. 2 is a schematic view of installation of the liquid sodium methoxide production system of the present invention.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
Referring to the liquid sodium methoxide production system shown in fig. 1 and 2, a methanol liquid storage device 1, a methanol evaporator 4 and a methanol and sodium mixing component belong to subsequent synthesis process equipment, and the methanol and sodium mixing component comprises a re-evaporator, a reaction tower, an alkali liquor heater, a methanol evaporator and the like. The methanol manufacturing process equipment uses the prior art, the scheme only improves the available heat energy of the process flow, and heats the methanol solution before entering the evaporator, thereby reducing the energy consumption of the methanol evaporator.
The methanol liquid in the methanol liquid storage device 1 is evaporated by the methanol evaporator 4 and then is conveyed to the methanol and sodium mixing assembly, at least one heat exchange device is arranged between the methanol liquid storage device 1 and the methanol evaporator 4, the discharged product of the methanol and sodium mixing assembly is conveyed to the heat exchange device, the methanol solution can be heated, the heat energy used by the evaporation of the evaporator is reduced, and the energy consumption of the whole process system is greatly saved.
CH3OH + NaOH-CH 3ONa + H2O sodium methoxide synthesis chemical reaction formula.
As an alternative embodiment, the heat exchange device is a heat exchanger. The heat exchanger comprises a first heat exchanger 2 and a second heat exchanger 3 which are communicated with each other, and methanol liquid in the methanol liquid storage device 1 is heated by the first heat exchanger 2 and the second heat exchanger 3 and then is conveyed to a methanol evaporator 4.
Further, the first heat exchanger 2 can be communicated with a reaction tower which is included in the methanol and sodium mixing assembly, and the tower bottom liquid of the reaction tower can heat the methanol liquid. The temperature of the bottom liquid of the reaction tower is 100-110 degrees, the direct discharging mode is adopted in the prior art, the bottom liquid of the reaction tower is conveyed to the first heat exchanger 2, the temperature of the methanol liquid can be improved, and the energy consumption of the evaporator 4 is further reduced.
Further, the methanol and sodium mixing assembly further comprises a re-evaporator, a reaction tower and an alkali liquor heater which are communicated with each other, the second heat exchanger 3 can be communicated with waste material discharge ports of the re-evaporator and the alkali liquor heater to further heat methanol liquid, and the temperature of the methanol liquid conveyed to the methanol evaporator 4 is further increased, so that the energy consumption of the methanol evaporator 4 is reduced.
As an optional implementation, the second heat exchanger 3 is further connected to an automatic condensed water pump 5, and steam or compressed air of the system is used as a power source for the automatic condensed water pump 5 to operate, for example, the used steam of the methanol evaporator is partially conveyed to the automatic condensed water pump 5, and is used as a power source for the automatic condensed water pump to operate, so that electric energy is avoided, the system is suitable for an explosion-proof environment of a liquid sodium methoxide device, the production safety factor is improved, and the conveyance of methanol liquid in the methanol evaporator is accelerated.
The overall thought of the scheme is as follows: the bottom liquid of the reaction tower and/or the effluents of the methanol evaporator and/or the re-evaporator and/or the alkali liquor heater are used for heating the methanol liquid before being conveyed to the methanol evaporator, so that the energy consumption of the thickening evaporator can be greatly reduced, and the energy-saving and environment-friendly effects are achieved.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (6)
1. A liquid sodium methoxide manufacturing system, methanol liquid storage equipment, a methanol evaporator and a methanol and sodium mixing component, wherein the methanol liquid in the storage equipment is conveyed to the methanol and sodium mixing component through the methanol evaporator, which is characterized in that,
at least one heat exchange device is installed between the methanol liquid storage device and the methanol evaporator, and a discharged product of the methanol and sodium mixing component is conveyed to the heat exchange device to heat a methanol solution.
2. The liquid sodium methoxide manufacturing system according to claim 1, wherein said heat exchange equipment is a heat exchanger.
3. The liquid sodium methoxide manufacturing system according to claim 2, wherein the heat exchanger includes a first heat exchanger and a second heat exchanger which are communicated with each other, and the methanol liquid in the methanol liquid storage device is heated by the heat exchanger and then is transported to the methanol evaporator.
4. The system for producing liquid sodium methoxide according to claim 3, wherein said first heat exchanger is capable of communicating with a reaction tower included in said methanol-sodium mixture module, and wherein a bottom liquid of said reaction tower is capable of heating a liquid of methanol.
5. The liquid sodium methoxide production system of claim 4, wherein said methanol and sodium mixing assembly further comprises a re-evaporator and a lye heater in communication with each other, said second heat exchanger being capable of communicating with the re-evaporator and said lye heater waste outlet.
6. The system for manufacturing liquid sodium methoxide of claim 5, wherein an automatic condensed water pump is further connected to said second heat exchanger, and hot gas exhausted from said methanol-sodium mixing module is delivered to said automatic condensed water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911048591.9A CN111056919A (en) | 2019-10-31 | 2019-10-31 | Liquid sodium methoxide manufacturing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911048591.9A CN111056919A (en) | 2019-10-31 | 2019-10-31 | Liquid sodium methoxide manufacturing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111056919A true CN111056919A (en) | 2020-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911048591.9A Pending CN111056919A (en) | 2019-10-31 | 2019-10-31 | Liquid sodium methoxide manufacturing system |
Country Status (1)
| Country | Link |
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| CN (1) | CN111056919A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105884578A (en) * | 2016-04-21 | 2016-08-24 | 赖明空 | Method for high temperature and high pressure production of sodium methoxide and device thereof |
| CN207877623U (en) * | 2018-01-24 | 2018-09-18 | 山东中天国际工程有限公司 | Alkaline process produces the process units of sodium methoxide |
-
2019
- 2019-10-31 CN CN201911048591.9A patent/CN111056919A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105884578A (en) * | 2016-04-21 | 2016-08-24 | 赖明空 | Method for high temperature and high pressure production of sodium methoxide and device thereof |
| CN207877623U (en) * | 2018-01-24 | 2018-09-18 | 山东中天国际工程有限公司 | Alkaline process produces the process units of sodium methoxide |
Non-Patent Citations (1)
| Title |
|---|
| 邵丹丹: "碱法生产甲醇钠工艺的研究", 中国优秀硕士学位论文全文数据库工程科技I辑, no. 04, pages 7 - 9 * |
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Inventor after: Li Qiang Inventor before: Li Qiang Inventor before: Qiu Yalong Inventor before: Wang Tao |
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