CN113521780A - Esterification tower for producing butyl acetate - Google Patents
Esterification tower for producing butyl acetate Download PDFInfo
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- CN113521780A CN113521780A CN202111023404.9A CN202111023404A CN113521780A CN 113521780 A CN113521780 A CN 113521780A CN 202111023404 A CN202111023404 A CN 202111023404A CN 113521780 A CN113521780 A CN 113521780A
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- heat
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- tower
- conduction pipe
- heat conduction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/009—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in combination with chemical reactions
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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
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
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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
Abstract
The invention discloses an esterification tower for producing butyl acetate, which belongs to the technical field of butyl acetate production equipment and comprises a reaction kettle, wherein a main body is arranged on one side of the reaction kettle, a heat exchange device is arranged between the reaction kettle and the main body, a hot air source is arranged at one end of the main body, a heat exchanger is arranged at the other end of the main body, and a rectifying tower is arranged on one side of the main body. Compared with the prior art, the invention has the beneficial effects that: according to the invention, heat in the rectifying tower is absorbed by liquid in the third heat-conducting pipe and guided into the second heat-conducting pipe, the liquid in the second heat-conducting pipe absorbs heat of reactants in the main body through the heat exchanger, the liquid in the second heat-conducting pipe heats the first heat-conducting pipe and the first material conveying pipe in the heat exchange assembly, and the first heat-conducting pipe heats the kettle body.
Description
Technical Field
The invention relates to the technical field of butyl acetate production equipment, in particular to an esterification tower for producing butyl acetate.
Background
Butyl acetate is an excellent organic solvent, and can be widely applied to industries such as paint, spice, leather making, pharmacy and the like.
The method for preparing butyl acetate mainly comprises a neodymium oxide catalytic synthesis method, a DH type catalyst synthesis method, an esterification method adopting a sulfuric acid catalyst and the like. The commonly used industrialized production of butyl acetate generally adopts the traditional sulfuric acid catalytic esterification method, and the method needs to mix acetic acid, butanol and concentrated sulfuric acid in a reaction kettle and then introduce the mixture into an esterification tower.
The esterification tower is divided into two working systems, namely: an esterification reaction system, wherein the reaction system is mainly a reaction kettle; II, secondly: and the separation system comprises a rectifying tower, a tower top cooler and an ester-water separator, and crude ester and water are obtained by separation through the rectifying tower after esterification in the reaction kettle and the esterification tower.
In the process, an external heat source is required to be used for heating the esterification tower, steam heating is generally adopted, most of energy consumed in the production process of the butyl acetate is used for heating, and the energy consumption is high.
Disclosure of Invention
The invention aims to provide an esterification tower for producing butyl acetate, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a butyl acetate production is with esterification tower, including reation kettle, a serial communication port, reation kettle switches on in the main part through first conveying pipeline, first conveying pipeline link up there is heat exchange device, it has first heat pipe to link up in the heat exchange device, first heat pipe sets up on reation kettle, it has the second heat pipe to link up in the heat exchange device, the second heat pipe link up in the heat exchanger, the heat exchanger switches on in the main part through the second conveying pipeline, the heat exchanger is kept away from second conveying pipeline one side and is had the rectifying column through the third conveying pipeline link up, the second heat pipe has the third heat pipe to link up, the third heat pipe sets up on the rectifying column, first heat pipe end to end connection is first closed loop, second heat pipe, third heat pipe and pipe interconnect are the second closed loop, heat exchange device is used for carrying the intra-annular heat of second closed loop to first closed loop.
As a further scheme of the invention: the reaction kettle comprises a kettle body, a disc-shaped first heat conduction pipe is fixedly connected to the outside of the kettle body, a heat insulation layer is arranged outside the kettle body and the first heat conduction pipe, and a first material guide pump is arranged on the first heat conduction pipe.
As a still further scheme of the invention: an air inlet is formed in one end of the main body, a hot steam source is communicated with the air inlet, one end of the second heat conduction pipe is communicated with the guide pipe, the other end of the second heat conduction pipe is communicated with the third heat conduction pipe, and the third heat conduction pipe is arranged in the rectifying tower.
As a still further scheme of the invention: a plurality of guide plates which are staggered with each other are arranged in the heat exchanger, and the second heat conduction pipe penetrates through the heat exchanger and the guide plates in a spiral shape.
As a still further scheme of the invention: the rectifying tower comprises a tower body, a disc-shaped third heat conduction pipe is fixedly connected to the outside of the tower body, a shell is arranged on the outer side of the third heat conduction pipe, the tower body is communicated into the heat exchanger through a third material conveying pipe, the third heat conduction pipe is communicated into a second heat conduction pipe through a guide pipe, and a second material guide pump is arranged on the guide pipe.
As a still further scheme of the invention: the heat exchange device comprises a shell, a heat exchange plate is fixedly connected in the shell, a first snakelike heat conduction pipe and a first conveying pipeline are fixedly connected on the heat exchange plate, a heat carrying assembly is fixedly connected at one end in the shell, and the heat carrying assembly is used for guiding heat of liquid in a second heat conduction pipe to the heat exchange plate.
As a still further scheme of the invention: and heat-conducting silicone grease is filled in the heat exchange plate.
As a still further scheme of the invention: the heat carrying assembly comprises a compressor, the compressor is fixedly connected to the shell, a radiator is arranged on one side of the compressor, the second heat conduction pipe is communicated with the radiator, and a condenser is arranged on the heat exchange plate.
Compared with the prior art, the invention has the beneficial effects that: the liquid in the third heat conduction pipe absorbs the heat in the rectifying tower and guides the heat into the second heat conduction pipe, the liquid in the second heat conduction pipe absorbs the heat of reactants in the main body through the heat exchanger, the second heat conduction pipe conveys the heat into the first heat conduction pipe through the heat conveying assembly, and the first heat conduction pipe heats the kettle body.
Drawings
FIG. 1 is a schematic structural diagram of an esterification tower for producing butyl acetate;
FIG. 2 is a schematic structural view of a heat exchanging apparatus in an esterifying tower for producing butyl acetate;
FIG. 3 is a schematic structural diagram of a heat exchanger in an esterification tower for producing butyl acetate;
FIG. 4 is a schematic structural diagram of a heat exchange plate in an esterification tower for producing butyl acetate;
in the figure: 1-a reaction kettle, 11-a kettle body, 12-a first heat conduction pipe, 13-a heat preservation layer, 14-a first material conduction pipe, 15-a first material conduction pump, 2-a main body, 21-an air inlet, 22-a second material conduction pipe, 3-a heat exchange device, 31-a shell, 32-a heat exchange plate, 33-a heat carrying assembly, 331-a compressor, 332-a radiator, 333-a condenser, 4-a hot steam source, 5-a heat exchanger, 51-a second heat conduction pipe, 52-a guide plate, 6-a rectifying tower, 61-a third heat conduction pipe, 62-a tower body, 63-a shell, 64-a third material conduction pipe, 7-a guide pipe and 8-a second material conduction pump.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms unless otherwise specified. These terms are only used to distinguish one element from another.
With reference to fig. 1-4, an embodiment of the present invention provides an esterification tower for producing butyl acetate, which includes, in combination with the illustration: the reaction kettle comprises a reaction kettle 1, wherein the reaction kettle 1 is communicated with a main body 2 through a first conveying pipe 14, a heat exchange device 3 is communicated with the first conveying pipe 14, a first heat conduction pipe 12 is communicated with the heat exchange device 3, the first heat conduction pipe 12 is arranged on the reaction kettle 1, a second heat conduction pipe 51 is communicated with the heat exchange device 3, the second heat conduction pipe 51 is communicated with a heat exchanger 5, the heat exchanger 5 is communicated with the main body 2 through a second conveying pipe 22, one side of the heat exchanger 332, far away from the second conveying pipe 22, is communicated with a rectifying tower 6 through a third conveying pipe 64, the second heat conduction pipe 51 is communicated with a third heat conduction pipe 61, the third heat conduction pipe 61 is arranged on the rectifying tower 6, the first heat conduction pipe 12 is connected with the end to form a first closed loop, the second heat conduction pipe 51, the third heat conduction pipe 61 and a guide pipe 7 are connected with each other to form a second closed loop, the heat exchange device 3 is used for conveying heat in the second closed loop to the first closed loop, heat exchange device 3 can lead heat exchanger 5 with the absorbed heat of the liquid of rectifying column 6 cooling usefulness, heat exchanger 5 can further absorb the heat on the reactant of heat source 4 heating in main part 2, heat exchange device 3 leads in the first heat pipe 12 with the heat to heat reation kettle 1, after the reactant in reation kettle 1 absorbs partial heat, the liquid of derivation passes through heat exchange device 3 and absorbs the heat once more, continue to heat in redirecting reation kettle 1, save the required energy of heating.
Referring to fig. 1, in an embodiment of the present invention, the reaction kettle 1 includes a kettle body 11, a first disk-shaped heat conducting pipe 12 is disposed outside the kettle body 11, a heat insulating layer 13 is disposed outside the kettle body 11 and the first heat conducting pipe 12, the first heat conducting pipe 12 penetrates into the heat exchanging device 3, the kettle body 11 is conducted into the main body 2 through a first material conveying pipe 14, the first material conveying pipe 14 penetrates through the heat exchanging device 3, and receives heat of the second heat conducting pipe 51 through the first heat conducting pipe 12, and meanwhile, the heat insulating layer 13 can ensure that heat is dissipated less, and a portion of the first heat conducting pipe 12 exposed outside the heat insulating layer 13 is heat-insulated through a heat insulating pipe sleeve to prevent heat dissipation.
Referring to fig. 1, in an embodiment of the present invention, an air inlet 21 is formed at one end of the main body 2, the air inlet 21 is communicated with the hot steam source 4, a second delivery pipe 22 is communicated with the other end of the main body 2, the second delivery pipe 22 is communicated with the heat exchanger 5, a second heat conduction pipe 51 is communicated with the heat exchanger 5, one end of the second heat conduction pipe 51 is communicated with a third heat conduction pipe 61, the third heat conduction pipe 61 is arranged in the rectifying tower 6, the reactant introduced into the first feed delivery pipe 14 is heated by the hot steam source 4, and after the resultant is heated to a gas phase, the heat is led out from the second feed pipe 22 on the upper side of the main body into the heat exchanger 5, at this time, the second heat transfer pipe 51 in the heat exchanger 5 absorbs part of the heat on the product in the gas phase, since the liquid in the second heat transfer pipe 51 is introduced from the third heat transfer pipe 61 in the rectifying tower 6, the liquid itself has a certain amount of heat, and the heat exchanger 5 and the second heat transfer pipe 51 secondarily heat the liquid.
Referring to fig. 1 and 3, in an embodiment of the present invention, a plurality of guide plates 52 are disposed in the heat exchanger 5, the second heat pipe 51 spirally penetrates through the heat exchanger 5 and the guide plates 52, the guide plates 52 and the spiral second heat pipe 51 increase the heat exchange area and the heat exchange time of the heat exchange, and the component in the heat exchanger 5 contacting the gas phase mixture is made of ceramic or enamel material to prevent corrosion.
Referring to fig. 1, in an embodiment of the present invention, the rectifying tower 6 includes a tower body 62, a disc-shaped third heat pipe 61 is disposed outside the tower body 62, an outer shell 63 is disposed outside the third heat pipe 61, the tower body 62 is conducted into the heat exchanger 5 through a third heat pipe 64, the third heat pipe 61 is conducted into the second heat pipe 12 through a conduit 7, heat overflowing from the tower body 62 of the rectifying tower 6 is collected through the third heat pipe 61, and the rectifying tower 6 has other heat dissipation cooling pipes besides the third heat pipe 61, so as to ensure a cooling effect of the rectifying tower 6.
Referring to fig. 1, 2 and 4, in an embodiment of the present invention, the heat exchanging device 3 includes a housing 31, a heat exchanging plate 32 is fixedly connected in the housing 31, a serpentine second heat conducting pipe 51 and a first heat conducting pipe 14 are fixedly connected to the heat exchanging plate 32, a heat transporting assembly 33 is fixedly connected at one end in the housing 31, the heat transporting assembly 33 is used for guiding heat in the conduit 7 to the heat exchanging plate 32, the heat exchanging plate 32 guides heat in the second heat conducting pipe 51 to the first heat conducting pipe 14 and the first heat conducting pipe 12, the heat exchanging device 3 can also be implemented by using a box filled with a heat conducting oil, the oil in the box absorbs heat in the second heat conducting pipe 51 and conducts heat to the first heat conducting pipe 14, and the heat transporting assembly 33 is disposed outside the box to transport heat in the conduit 7.
Referring to fig. 1, fig. 2 and fig. 4, in an embodiment of the present invention, the heat exchange plate 32 is filled with heat conductive silicone grease, the heat conductive efficiency between the second heat pipe 51 and the first heat pipe 12 and the first delivery pipe 14 is ensured by the heat conductive silicone grease filled in the heat exchange plate 32, and the heat conductive silicone grease may also be replaced by other heat conductive materials.
Referring to fig. 1 and 2, in an embodiment of the present invention, the heat transporting assembly 33 includes a compressor 331, the compressor 331 is fixedly connected to the housing 31, a heat sink 332 is disposed on one side of the compressor 331, the second heat conducting pipe 12 is communicated with the heat sink 332, the compressor 331 is communicated with a condenser 333 through a pipe, the condenser 333 is fixedly connected to the heat exchanging plate 32, the heat transporting assembly 33 transports heat in the second heat conducting pipe 12 at a lower temperature to the heat exchanging plate 32 at a higher temperature through the action of the compressor 331, heat generated during the working process of the compressor 331 can also be guided to the heat exchanging plate 32 to further heat the first heat transporting pipe 14, the heat transporting assembly 33 can also use a water cooler to cool and dissipate heat the conduit 7, meanwhile, the compressor 331 reduces the temperature of the liquid in the conduit 7, so as to prevent the liquid in the conduit 7 from being too high in temperature and being unable to effectively dissipate heat of the rectifying tower 6.
Referring to fig. 1, in an embodiment of the present invention, a second conducting pump 8 is disposed on the conduit 7, and the liquid in the conduit 7 is circulated by the second conducting pump 8.
The working principle of the invention is as follows: firstly, acetic acid, butanol and concentrated sulfuric acid as catalyst are added into a kettle body 11 according to a certain proportion, a stirring device and a heating device on a reaction kettle 1 stir raw materials in the kettle body 11 and heat the raw materials, the raw materials are conveyed into a main body 2 through a first material conveying pipe 14, high-temperature steam is introduced into the main body 2 through a hot steam source 4 at one end of the main body 2, the high-temperature steam is contacted with the input raw materials and is gasified, part of the raw materials flow back, part of the raw materials are subjected to esterification reaction and are heated into gas phase, a reactant in the gas phase is introduced into a heat exchanger 5 through a second material conveying pipe 22, a guide plate 52 in the heat exchanger 5 divides the inner space of the heat exchanger 5 into a snake-shaped flow channel, the flowing speed of the reactant in the flow channel is reduced, meanwhile, a spiral second heat conduction pipe 51 penetrating through the heat exchanger 5 is fully contacted with the reactant in the gas phase, part of heat is introduced into the second heat conduction pipe 51, and the reactant in the gas phase is introduced into a rectifying tower 6 through a third material conveying pipe 64, the gas phase reactant is rectified by the cooling effect of the third heat conduction pipe 61 in the rectifying tower 6, the rectified reactant is introduced into the equipment of the next process, the disc-shaped third heat conduction pipe 61 absorbs a large amount of heat during rectification, the liquid in the third heat conduction pipe 61 flows into the second heat conduction pipe 51 under the effect of the second conduction pump 8, the second heat conduction pipe 51 is further heated in the heat exchanger 5, the liquid in the second heat conduction pipe 51 is introduced into the other end of the second heat conduction pipe 51, the second heat conduction pipe 12 penetrates through the radiator 332, the compressor 331 carries the heat absorbed by the radiator 332 to the condenser 333, the heat is guided to the heat exchange plate 32 by the condenser 333, after the heat of the heat exchange plate 32 is increased, the first heat conduction pipe 12 and the first conduction pipe 14 are heated, good heat conductivity is ensured by the heat conduction silicone grease in the heat exchange plate 32, the heat on the first heat conduction pipe 12 is firstly conveyed into the kettle 11 by the circulating effect of the first conduction pump 15, at this moment, the power of the heating device in the reaction kettle 1 can be properly reduced, after the heat is released in the reaction kettle 1, the liquid in the first heat conduction pipe 12 is returned to the heat exchange plate 32, and the first heat conduction pipe 12 absorbs the heat from the heat exchange plate 32 again, so that the heat required by heating the reactants in the reaction kettle 1 is reduced, the reaction kettle is energy-saving and environment-friendly, and is easy to maintain, and the inside of the pipeline is not easy to corrode and damage.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a butyl acetate production is with esterification tower, including reation kettle, a serial communication port, reation kettle switches on in the main part through first conveying pipeline, first conveying pipeline link up there is heat exchange device, it has first heat pipe to link up in the heat exchange device, first heat pipe sets up on reation kettle, it has the second heat pipe to link up in the heat exchange device, the second heat pipe link up in the heat exchanger, the heat exchanger switches on in the main part through the second conveying pipeline, the heat exchanger is kept away from second conveying pipeline one side and is had the rectifying column through the third conveying pipeline link up, the second heat pipe has the third heat pipe to link up, the third heat pipe sets up on the rectifying column, first heat pipe end to end connection is first closed loop, second heat pipe, third heat pipe and pipe interconnect are the second closed loop, heat exchange device is used for carrying the intra-annular heat of second closed loop to first closed loop.
2. The esterification tower for producing butyl acetate according to claim 1, wherein the reaction kettle comprises a kettle body, a disk-shaped first heat conduction pipe is fixedly connected to the outside of the kettle body, a heat insulation layer is arranged outside the kettle body and the first heat conduction pipe, and a first material guide pump is arranged on the first heat conduction pipe.
3. The esterification tower for producing butyl acetate according to claim 1, wherein an air inlet is formed at one end of the main body, a hot steam source is communicated with the air inlet, one end of the second heat conduction pipe is communicated with the guide pipe, the other end of the second heat conduction pipe is communicated with the third heat conduction pipe, and the third heat conduction pipe is arranged in the rectifying tower.
4. The esterification tower for producing butyl acetate according to claim 3, wherein a plurality of flow deflectors which are staggered with each other are arranged in the heat exchanger, and the second heat conduction pipe spirally penetrates through the heat exchanger and the flow deflectors.
5. The esterification tower according to claim 3, wherein the rectification tower comprises a tower body, a disc-shaped third heat conduction pipe is fixedly connected to the outside of the tower body, an outer shell is arranged on the outside of the third heat conduction pipe, the tower body is communicated with the heat exchanger through the third heat conduction pipe, the third heat conduction pipe is communicated with the second heat conduction pipe through a guide pipe, and a second material guide pump is arranged on the guide pipe.
6. The esterification tower according to claim 3, wherein the heat exchange device comprises a housing, a heat exchange plate is fixedly connected in the housing, a serpentine first heat pipe and a first material conveying pipe are fixedly connected to the heat exchange plate, and a heat carrying assembly is fixedly connected to one end of the housing and is used for guiding heat of liquid in the second heat pipe to the heat exchange plate.
7. The esterification tower for producing butyl acetate according to claim 6, wherein the heat exchange plate is filled with heat conductive silicone grease.
8. The esterification tower for producing butyl acetate according to claim 6, wherein the heat carrying assembly comprises a compressor, the compressor is fixedly connected to the housing, a heat sink is disposed on one side of the compressor, the second heat conducting pipe is communicated with the heat sink, and a condenser is disposed on the heat exchange plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111023404.9A CN113521780B (en) | 2021-09-02 | 2021-09-02 | Esterification tower for producing butyl acetate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111023404.9A CN113521780B (en) | 2021-09-02 | 2021-09-02 | Esterification tower for producing butyl acetate |
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| CN113521780A true CN113521780A (en) | 2021-10-22 |
| CN113521780B CN113521780B (en) | 2022-08-23 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6093845A (en) * | 1997-03-26 | 2000-07-25 | Bp Chemicals Limited | Ester co-production |
| CN1834082A (en) * | 2006-02-28 | 2006-09-20 | 华南理工大学 | Heat pump rectifying prodn. process and plant for n-butyl acetate |
| CN206027671U (en) * | 2016-09-14 | 2017-03-22 | 广州市番禺区协运来化工用品有限公司 | Heating and thermal cycling device in softener production process |
| CN109520336A (en) * | 2017-09-16 | 2019-03-26 | 程长春 | A kind of heat exchange of heat pipe |
| CN112229068A (en) * | 2020-11-09 | 2021-01-15 | 西安热工研究院有限公司 | System and method for improving unit water supply temperature by utilizing factory waste heat |
| CN213433041U (en) * | 2020-10-09 | 2021-06-15 | 淄博鑫实化工设备有限公司 | Flue gas waste heat exchanger device for rectifying tower |
| CN113318679A (en) * | 2021-05-28 | 2021-08-31 | 重庆化工职业学院 | Circulation reaction kettle |
-
2021
- 2021-09-02 CN CN202111023404.9A patent/CN113521780B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6093845A (en) * | 1997-03-26 | 2000-07-25 | Bp Chemicals Limited | Ester co-production |
| CN1834082A (en) * | 2006-02-28 | 2006-09-20 | 华南理工大学 | Heat pump rectifying prodn. process and plant for n-butyl acetate |
| CN206027671U (en) * | 2016-09-14 | 2017-03-22 | 广州市番禺区协运来化工用品有限公司 | Heating and thermal cycling device in softener production process |
| CN109520336A (en) * | 2017-09-16 | 2019-03-26 | 程长春 | A kind of heat exchange of heat pipe |
| CN213433041U (en) * | 2020-10-09 | 2021-06-15 | 淄博鑫实化工设备有限公司 | Flue gas waste heat exchanger device for rectifying tower |
| CN112229068A (en) * | 2020-11-09 | 2021-01-15 | 西安热工研究院有限公司 | System and method for improving unit water supply temperature by utilizing factory waste heat |
| CN113318679A (en) * | 2021-05-28 | 2021-08-31 | 重庆化工职业学院 | Circulation reaction kettle |
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