CN113578244A - Tube array type reaction device and application thereof - Google Patents
Tube array type reaction device and application thereof Download PDFInfo
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- CN113578244A CN113578244A CN202110908523.6A CN202110908523A CN113578244A CN 113578244 A CN113578244 A CN 113578244A CN 202110908523 A CN202110908523 A CN 202110908523A CN 113578244 A CN113578244 A CN 113578244A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/2415—Tubular reactors
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D207/18—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
- C07D207/22—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D207/24—Oxygen or sulfur atoms
- C07D207/26—2-Pyrrolidones
- C07D207/263—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms
- C07D207/267—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atom
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
- B01J2219/00081—Tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/0015—Controlling the temperature by thermal insulation means
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Abstract
The disclosure belongs to the technical field of chemical reaction devices, and particularly relates to a tubular reaction device and application thereof. A shell and tube reactor, wherein reactor cylinders are connected through a reactor material communicating pipe to form a circulating reaction bed shell and tube reactor; the reactor barrel comprises a plurality of reactor tubes arranged in parallel, the space between the reactor tubes is of a reactor shell structure, and the reactor tubes are arranged inside the reactor tubes. The reaction materials of the device are fully contacted with the heat exchange medium, so that the problems that the heat transfer effect of the tubular reactor is poor, so that the production expansion needs to be realized by a plurality of sets of parallel connection and the pipe diameter is enlarged are solved.
Description
Technical Field
The disclosure belongs to the technical field of chemical reaction devices, and particularly relates to a tubular reaction device and application thereof.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
N-methylpyrrolidone, also known as NMP; 1-methyl-2-pyrrolidone; n-methyl-2-pyrrolidone. Colorless transparent oily liquid, slightly having amine odor. Can be mutually soluble with water, alcohol, ether, ester, ketone, halogenated hydrocarbon, aromatic hydrocarbon and castor oil. Low volatility, good thermal stability and chemical stability, and can be volatilized with water vapor. It is hygroscopic and sensitive to light. As an indispensable organic solvent for lithium battery production, N-methyl pyrrolidone (NMP) can be used for dissolving a positive electrode binder PVDF and used as a diffusion liquid of a lithium battery carbon nanotube conductive slurry (CNT), which respectively influences the coating quality/effect and improves the energy density of the lithium battery, and has the characteristics of high boiling point, superior dissolving power, low volatility, strong selectivity, good thermal stability, strong hygroscopicity and the like.
At present, NMP is mainly produced by the reaction of GBL with monomethylamine. The existing NMP reactors are mainly of two types: a double pipe reactor and an oil bath reactor. The oil bath reactor has large occupied area and high investment; and the heat conducting oil has large consumption, poor fluidity and lag temperature regulation. The single set of production capacity of the sleeve type reactor is limited, and a plurality of sets of parallel connection are adopted for the existing production; if the sleeve is adopted for thickening to improve the productivity, the heat exchange effect is poor, side reactions are generated, and the yield and the product quality of NMP are directly influenced.
Disclosure of Invention
In order to solve the problems in the prior art, the heat conduction and heat exchange effect is improved, and the side reaction is reduced, so that the yield and the product quality of NMP are improved.
Specifically, the technical scheme of the present disclosure is as follows:
in a first aspect of the disclosure, a tubular reaction device is provided, wherein reactor cylinders are connected through a reactor material communicating pipe to form a tubular reaction device of a circulating reaction bed; the reactor barrel comprises a plurality of reactor tubes arranged in parallel, the space between the reactor tubes is of a reactor shell structure, and the reactor tubes are arranged inside the reactor tubes.
In a second aspect of the disclosure, a production process is based on the shell-and-tube reactor, wherein a reaction material enters a tube layer structure of the reactor from a reaction material inlet, and a heat exchange medium enters a shell layer structure of the reactor from a heat exchange medium inlet; and the reaction materials and the heat exchange medium perform reverse heat exchange.
In a third aspect of the present disclosure, the shell and tube reaction apparatus and/or the production process are applied to the field of chemical preparation.
One or more technical schemes in the disclosure have the following beneficial effects:
(1) this openly uses shell and tube reactor, and reaction material fully contacts with the conduction oil, ensures the heat transfer effect. Solves the problem that the tube reactor in the prior art needs a plurality of sets of parallel connection and the diameter of the tube is enlarged to cause poor heat transfer effect.
(2) This openly compare in current barrel structure, use many tube type reactor serial connections, reaction material and conduction oil fully contact have improved the heat transfer effect, simultaneously, have prolonged the reaction flow, guarantee dwell time, have effectively reduced area.
(3) Because NMP is in the production process, the reaction is carried out step by step and is a reversible reaction, a large amount of byproducts are easily generated by using a traditional reactor, and the generation of the byproducts is avoided by adopting the reactor disclosed by the invention. Moreover, the traditional tubular reactor has poor heat conduction oil fluidity, and the generation of reversible reaction can also lead to the reduction of the yield of the NMP, and the reactor disclosed by the invention has the advantages that reaction materials are fully contacted with the heat conduction oil due to the action among different tubes, so that the heat exchange effect is improved, the yield of the NMP is greatly improved, and the yield is improved to more than 99% from the original 97%.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.
Embodiments of the present disclosure are described in detail below with reference to the attached drawing figures, wherein:
FIG. 1: a schematic view of the structure of the tubular reaction apparatus of example 1.
FIG. 2: is a cross-sectional view of the reactor barrel of FIG. 1;
the reactor comprises a reaction material inlet 1, a reaction product outlet 2, a heat exchange medium inlet 3, a heat exchange medium outlet 4, a reactor array pipe 5, a reactor material communicating pipe 6, a heat exchange medium communicating pipe 7, a heat insulating layer 8, a reactor cylinder 9, a reactor shell structure 10 and a reactor shell structure 11.
Detailed Description
The disclosure is further illustrated with reference to specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. The experimental procedures, in which specific conditions are not noted in the following examples, are generally carried out according to conventional conditions or according to conditions recommended by the manufacturers.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The reagents or starting materials used in the present invention can be purchased from conventional sources, and unless otherwise specified, the reagents or starting materials used in the present invention can be used in a conventional manner in the art or in accordance with the product specifications. In addition, any methods and materials similar or equivalent to those described herein can be used in the methods of the present invention. The preferred embodiments and materials described herein are intended to be exemplary only.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, and/or combinations thereof, unless the context clearly indicates otherwise.
At present, NMP reactors in the traditional production process are mainly sleeve type reactors and oil bath type reactors. The oil bath reactor has large occupied area and high investment; and the heat conducting oil has large consumption, poor fluidity and lag temperature regulation. The single-sleeve production capacity of the sleeve type reactor is limited, the sleeve is thickened to improve the productivity, so that the heat exchange effect is poor, side reactions are generated, and the yield and the product quality of NMP are directly influenced. Therefore, the present disclosure provides a shell and tube reaction device and applications thereof.
In one embodiment of the disclosure, the shell-and-tube reactor is characterized in that reactor cylinders are connected through a reactor material communicating pipe to form a circulating reaction bed shell-and-tube reactor; the reactor barrel comprises a plurality of reactor tubes arranged in parallel, the space between the reactor tubes is of a reactor shell structure, and the reactor tubes are arranged inside the reactor tubes.
The reactor with the structure is unique, and is different from the existing tubular reactor, a plurality of reactor tubes are arranged in the reactor barrel of the tubular reactor device. The space between each reactor tube array provides sufficient circulation passageway for heat transfer medium, and in addition, forms pressure differential easily between the reactor tube array, is favorable to improving heat transfer medium's homogeneity and flows, and even heat transfer helps avoiding the formation of accessory substance.
In one embodiment of the present disclosure, the reactor shell structure is used to introduce a heat exchange medium; the reactor tube layer structure is used for introducing reaction materials. Through reverse heat transfer, help guaranteeing the heat transfer effect. And the tube layers of the plurality of tubular reactors are connected in series, so that the heat exchange time is prolonged.
In one embodiment of the present disclosure, the heat exchange medium inlet is disposed adjacent to the reaction product outlet and the heat exchange medium outlet is disposed adjacent to the reaction mass inlet. For example, in order to improve the heat exchange effect, the reaction material enters the tube layer structure of the reactor from the inlet at the left side of the reactor, the heat exchange medium enters the shell layer structure of the reactor from the inlet of the heat exchange medium of the reactor, and the inlet of the heat exchange medium is positioned at the lower part of the barrel of the reactor and is close to the outlet of the reaction product. The structure arrangement can fully improve the heat exchange time and improve the heat exchange effect.
In one embodiment of the present disclosure, the number of reactor barrels is 3-6 segments; a heat exchange medium communicating pipe is connected between the reactor barrels; the heat exchange medium communicating pipe is communicated with the reactor shell layer structure, so that the high efficiency of the heat exchange effect is ensured.
In an embodiment of the present disclosure, the reactor cylinder is further provided with a thermal insulation layer, which reduces heat loss, improves heat utilization rate, and reduces cost.
In one embodiment of the disclosure, a production process is based on the shell-and-tube reactor, wherein a reaction material enters a tube layer structure of the reactor from a reaction material inlet, and a heat exchange medium enters a shell layer structure of the reactor from a heat exchange medium inlet; and the reaction materials and the heat exchange medium perform reverse heat exchange.
In one embodiment of the present disclosure, the reaction mass is selected from N-ethylpyrrolidone, N-vinylpyrrolidone, N-octylpyrrolidone, N-benzylpyrrolidone, N-phenylpyrrolidone or N-methylpyrrolidone. In the reaction process of the N-methylpyrrolidone, the reaction time is prolonged and the reverse reaction is generated due to the fact that the step reaction speed is low and is controlled in a balanced mode, compared with other chemicals, the preparation is more difficult, and the requirement on a reactor device is higher. By adopting the device, the defects caused by the characteristics of the NMP can be well avoided.
In one embodiment of the present disclosure, the reaction mass is N-methylpyrrolidone.
In one embodiment of the present disclosure, the heat exchange medium is selected from steam, molten salt, alkali metal or heat conducting oil; preferably, it is a heat transfer oil. The selection of the heat exchange medium can be based on actual needs. However, this device configuration is more suitable for thermal oil.
In one embodiment of the disclosure, the shell and tube reaction device and/or the production process are applied to the field of chemical preparation.
In order to make the technical solutions of the present disclosure more clearly understood by those skilled in the art, the technical solutions of the present disclosure will be described in detail below with reference to specific embodiments.
Example 1
Referring to fig. 1 and 2, a tubular reactor, wherein reactor cylinders 9 are connected through a reactor material communicating pipe 6 to form a tubular reactor of a circulating reaction bed; the space between each reactor tube array 5 is a reactor shell structure 10, and the reactor tube array is internally provided with a reactor tube layer structure 11. The number of the reactor barrels 9 is 3, and heat exchange medium communicating pipes 7 are connected between the reactor barrels 9; the heat exchange medium communicating pipe 7 is communicated with a reactor shell layer structure 10, the reaction material outlet 2 is close to the heat exchange medium inlet 3, and the reaction material inlet 1 is connected with a reactor tube layer structure 11. In order to improve the heat exchange effect, a heat insulation layer 8 is also arranged on the reactor cylinder 9.
Example 2:
a production process adopts the tube type reaction device in the embodiment 1, wherein a reaction material NMP enters a tube layer structure of a reactor from a reaction material inlet, and heat transfer medium heat transfer oil enters a shell layer structure of the reactor from a heat transfer medium inlet; and the reaction materials and the heat exchange medium perform reverse heat exchange. The production process can avoid the production of byproducts to the maximum extent, improve the yield and improve the heat exchange effect.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A shell and tube reactor is characterized in that reactor cylinders are connected through a reactor material communicating pipe to form a circulating reaction bed shell and tube reactor; the reactor barrel comprises a plurality of reactor tubes arranged in parallel, the space between the reactor tubes is of a reactor shell structure, and the reactor tubes are arranged inside the reactor tubes.
2. The shell-and-tube reactor apparatus of claim 1, wherein the reactor shell structure is adapted to introduce a heat exchange medium; the reactor tube layer structure is used for introducing reaction materials.
3. A shell and tube reactor according to claim 1, wherein the heat exchange medium inlet is disposed in the vicinity of the reaction product outlet, and the heat exchange medium outlet is disposed in the vicinity of the reaction material inlet.
4. The tubular reactor apparatus according to claim 1, wherein the number of the reactor barrels is 3 to 6; a heat exchange medium communicating pipe is connected between the reactor barrels; the heat exchange medium communicating pipe is communicated with the reactor shell layer structure.
5. A shell and tube reactor apparatus as claimed in claim 1 wherein the reactor barrel is further provided with a thermal insulation layer.
6. A production process is characterized in that based on the shell and tube reactor of any one of claims 1 to 5, reaction materials enter a tube layer structure of the reactor from a reaction material inlet, and a heat exchange medium enters a shell layer structure of the reactor from a heat exchange medium inlet; and the reaction materials and the heat exchange medium perform reverse heat exchange.
7. A process according to claim 6, wherein the reaction mass is selected from N-ethylpyrrolidone, N-vinylpyrrolidone, N-octylpyrrolidone, N-benzylpyrrolidone, N-phenylpyrrolidone or N-methylpyrrolidone.
8. A process according to claim 7, wherein the reactant is N-methylpyrrolidone.
9. A process according to claim 6, wherein the heat transfer medium is selected from steam, molten salt, alkali metal or heat transfer oil; preferably, it is a heat transfer oil.
10. Use of a shell and tube reactor according to any one of claims 1 to 5 and/or a process according to any one of claims 6 to 9 for the preparation of chemicals.
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| CN202110908523.6A CN113578244A (en) | 2021-08-09 | 2021-08-09 | Tube array type reaction device and application thereof |
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| CN202110908523.6A CN113578244A (en) | 2021-08-09 | 2021-08-09 | Tube array type reaction device and application thereof |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003024874A2 (en) * | 2001-09-20 | 2003-03-27 | Trojan Technologies Inc. | Fluid treatment system comprising an helical array of reactors |
| CN201441911U (en) * | 2009-05-30 | 2010-04-28 | 潍坊益华化工有限公司 | Impulse dynamic continuous tube-type reactor |
| CN101935288A (en) * | 2009-07-02 | 2011-01-05 | 浙江新安化工集团股份有限公司 | Process and device for synthesizing imino diacetate by using diethanol amine |
| CN102062548A (en) * | 2010-12-03 | 2011-05-18 | 袁孟军 | Multiple-series-sleeve large-temperature-difference heat exchange method and device |
| CN201876167U (en) * | 2010-12-01 | 2011-06-22 | 袁孟军 | Large-temperature-difference heat exchange device with multiple stages of serial casings |
| CN103263884A (en) * | 2013-06-08 | 2013-08-28 | 上海海唇机械设备工程技术有限公司 | Synthesis reactor and device and method for synthesizing methylhydrazine by chloramine process |
| CN107089961A (en) * | 2017-05-16 | 2017-08-25 | 濮阳惠成电子材料股份有限公司 | A kind of method that continuous hydrogenation produces methylhexahydrophthalic anhydride |
| CN206701242U (en) * | 2017-05-14 | 2017-12-05 | 岳阳市中顺化工有限责任公司 | A kind of pipeline reactor for fine chemistry industry production |
| WO2017223220A1 (en) * | 2016-06-21 | 2017-12-28 | P2 Science, Inc. | Flow-through reactors for the continuous quenching of peroxide mixtures and methods comprising the same |
| CN207769804U (en) * | 2017-11-30 | 2018-08-28 | 庆阳凯威尔能源化工有限公司 | A kind of flow reactor |
| CN109225114A (en) * | 2018-11-01 | 2019-01-18 | 葛沁怡 | A kind of self-loopa tubulation reaction unit with Hi-mixer and the reaction method using it |
| CN209530880U (en) * | 2019-01-18 | 2019-10-25 | 山东诺为制药流体系统有限公司 | A kind of multi-thread sequentially reaction system |
| CN209783349U (en) * | 2019-04-12 | 2019-12-13 | 山东东方宏业化工有限公司 | Sleeve type self-cleaning heat exchanger |
| CN210058279U (en) * | 2019-01-18 | 2020-02-14 | 山东诺为制药流体系统有限公司 | Connecting elbow for reactor |
-
2021
- 2021-08-09 CN CN202110908523.6A patent/CN113578244A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003024874A2 (en) * | 2001-09-20 | 2003-03-27 | Trojan Technologies Inc. | Fluid treatment system comprising an helical array of reactors |
| CN201441911U (en) * | 2009-05-30 | 2010-04-28 | 潍坊益华化工有限公司 | Impulse dynamic continuous tube-type reactor |
| CN101935288A (en) * | 2009-07-02 | 2011-01-05 | 浙江新安化工集团股份有限公司 | Process and device for synthesizing imino diacetate by using diethanol amine |
| CN201876167U (en) * | 2010-12-01 | 2011-06-22 | 袁孟军 | Large-temperature-difference heat exchange device with multiple stages of serial casings |
| CN102062548A (en) * | 2010-12-03 | 2011-05-18 | 袁孟军 | Multiple-series-sleeve large-temperature-difference heat exchange method and device |
| CN103263884A (en) * | 2013-06-08 | 2013-08-28 | 上海海唇机械设备工程技术有限公司 | Synthesis reactor and device and method for synthesizing methylhydrazine by chloramine process |
| WO2017223220A1 (en) * | 2016-06-21 | 2017-12-28 | P2 Science, Inc. | Flow-through reactors for the continuous quenching of peroxide mixtures and methods comprising the same |
| CN206701242U (en) * | 2017-05-14 | 2017-12-05 | 岳阳市中顺化工有限责任公司 | A kind of pipeline reactor for fine chemistry industry production |
| CN107089961A (en) * | 2017-05-16 | 2017-08-25 | 濮阳惠成电子材料股份有限公司 | A kind of method that continuous hydrogenation produces methylhexahydrophthalic anhydride |
| CN207769804U (en) * | 2017-11-30 | 2018-08-28 | 庆阳凯威尔能源化工有限公司 | A kind of flow reactor |
| CN109225114A (en) * | 2018-11-01 | 2019-01-18 | 葛沁怡 | A kind of self-loopa tubulation reaction unit with Hi-mixer and the reaction method using it |
| CN209530880U (en) * | 2019-01-18 | 2019-10-25 | 山东诺为制药流体系统有限公司 | A kind of multi-thread sequentially reaction system |
| CN210058279U (en) * | 2019-01-18 | 2020-02-14 | 山东诺为制药流体系统有限公司 | Connecting elbow for reactor |
| CN209783349U (en) * | 2019-04-12 | 2019-12-13 | 山东东方宏业化工有限公司 | Sleeve type self-cleaning heat exchanger |
Non-Patent Citations (1)
| Title |
|---|
| 张洪流等: "《化工单元操作设备设计》", 31 December 2011, 上海：华东理工大学出版社 * |
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