CN111203170A - Green synthesis device of 4-chloroacetoacetic acid esters - Google Patents
Green synthesis device of 4-chloroacetoacetic acid esters Download PDFInfo
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- CN111203170A CN111203170A CN202010183397.8A CN202010183397A CN111203170A CN 111203170 A CN111203170 A CN 111203170A CN 202010183397 A CN202010183397 A CN 202010183397A CN 111203170 A CN111203170 A CN 111203170A
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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
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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
- B01J10/00—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/46—Preparation of carboxylic acid esters from ketenes or polyketenes
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Abstract
The invention discloses a green synthesis device of 4-chloroacetoacetic acid esters, which comprises a sealed heat preservation shell, wherein a conductive cylinder is arranged in the heat preservation shell, the upper end and the lower end of the conductive cylinder are fixedly connected with the upper side and the lower side of an inner cavity of the heat preservation shell in a sealing way, an electrostatic generator is arranged outside the heat preservation shell, the output end of the electrostatic generator is connected with the side surface of the conductive cylinder through a cable, the cable penetrates through the heat preservation shell, an electrostatic sprayer is arranged at the upper part of the inner cavity of the conductive cylinder, and a precooler is arranged outside the conductive cylinder; the device for synthesizing the 4-chloroacetoacetic acid esters electrostatically atomizes the diketene solution, improves the contact area between the diketene solution droplets and the chlorine, determines the reaction time of the diketene solution droplets and the chlorine by the downward moving distance of the diketene solution droplets, is convenient to control the reaction time of the diketene solution and the chlorine, reduces the generation of byproducts, and avoids the loss of raw materials.
Description
Technical Field
The invention relates to the technical field of organic matter synthesis equipment, in particular to a green synthesis device for 4-chloroacetoacetic acid esters.
Background
In the synthesis process of the 4-chloroacetoacetic acid esters: introducing chlorine into the diketene solution at a temperature of between 15 ℃ below zero and 30 ℃ below zero, stirring at a low temperature, adding alcohols for esterification reaction after the reaction is finished, and performing post-treatment and rectification after the reaction is finished to obtain a product with the yield of 80 to 88 percent, wherein the chlorine is too long in contact with the product to easily generate other chlorinated compounds, such as: ethyl 2-chloroacetoacetate, ethyl 2, 4-dichloroacetoacetate, ethyl 2, 4, 4-trichloroacetoacetate, etc., causing loss of raw materials.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the existing defects and provide a green synthesis device of 4-chloroacetoacetic acid esters, when the device is used, the reaction time of diketene solution and chlorine is convenient to control, the generation of by-products is reduced, the loss of raw materials is avoided, and the problems in the background art can be effectively solved.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a green synthesizer of 4-chloroacetoacetic acid ester, is including sealed heat preservation casing, and the inside of heat preservation casing is equipped with the conductive cylinder, and the upper and lower both ends of conductive cylinder all with the sealed fixed connection in upper and lower both sides of heat preservation casing inner chamber, the outside of heat preservation casing is equipped with electrostatic generator, and the output of electrostatic generator passes through cable junction with the side of conductive cylinder, and the cable runs through the heat preservation casing.
The upper part of the inner cavity of the conductive cylinder is provided with an electrostatic sprayer, a precooler is arranged outside the conductive cylinder, the liquid outlet of the precooler is communicated with the liquid inlet of the electrostatic sprayer through a liquid guide pipe, and the liquid guide pipe penetrates through the heat preservation shell.
The lower side of the heat preservation shell is provided with a liquid outlet communicated with the inner cavity of the conductive cylinder, and an automatic liquid discharging device is installed on the liquid outlet.
The electrostatic sprayer also comprises a control switch group, and the output end of the control switch group is respectively and electrically connected with the input end of the electrostatic generator and the input end of the electrostatic sprayer.
As a preferable technical scheme of the invention, the lower part of the inner cavity of the conductive cylinder body is provided with a grounding net, the side surface of the grounding net is fixedly connected with one end of a grounding wire, the other end of the grounding wire penetrates through and extends to the outer side of the heat-insulating shell, and one end of the grounding wire positioned on the outer side of the heat-insulating shell is connected with the grounding wire.
As a preferable technical scheme of the invention, an ultrasonic vibrator is fixed on the inner side of the conductive cylinder, and the input end of the ultrasonic vibrator is electrically connected with the output end of the control switch group.
As a preferred technical scheme of the invention, the upper end and the lower end of the conductive cylinder body are both fixed with rubber rings, and the upper end and the lower end of the conductive cylinder body are both in sealed elastic connection with the upper side and the lower side of the inner cavity of the heat preservation shell body through the rubber rings.
As a preferable technical scheme of the invention, the lower side of the interior of the heat preservation shell is downwards sunken, and the liquid discharge port is positioned at the lowest part of the sunken part of the interior lower side of the heat preservation shell.
As a preferred technical scheme of the invention, the outer side of the heat-insulating shell is provided with a gas injection port communicated with the interior of the conductive cylinder, the gas injection port is connected with a gas outlet of the corrosion-resistant elastic airbag, and the corrosion-resistant elastic airbag is provided with a gas charging port.
As a preferred technical scheme of the invention, the heat-insulating shell is made of insulating engineering plastic materials or insulating paint is arranged on the inner side of the heat-insulating shell.
As a preferred technical scheme of the invention, an interlayer cavity is formed between the heat-insulating shell and the conductive cylinder, gas is injected into the interlayer cavity, and the gas pressure in the interlayer cavity is greater than the gas pressure in the conductive cylinder.
As a preferred technical scheme of the invention, an interlayer cavity is formed between the heat-insulating shell and the conductive cylinder, the interlayer cavity is vacuumized, and the air pressure in the interlayer cavity is smaller than the air pressure in the conductive cylinder.
As a preferred technical scheme of the invention, the outer side of the heat-insulating shell is provided with a detection hole communicated with the interlayer cavity, and the outer side of the detection hole is provided with a barometer.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the green synthesis device of 4-chloroacetoacetic acid esters, disclosed by the invention, the diketene solution is subjected to electrostatic atomization, the contact area between the diketene solution droplets and chlorine is increased, the downward moving distance of the diketene solution droplets determines the reaction time between the diketene solution droplets and the chlorine, the reaction time between the diketene solution and the chlorine is convenient to control, and the generation of byproducts is reduced.
2. According to the green synthesis device of 4-chloroacetoacetic acid esters, disclosed by the invention, the downward movement time of the diketene liquid drop from the upper part of the inner cavity of the conductive cylinder body is similar, so that the contact time of the diketene liquid drop and chlorine is controlled; the droplets of the diketene are charged in the same way, the droplets of the diketene are not easy to fuse, and the contact area of the droplets of the diketene and the chlorine is large, so that the reaction speed of the diketene and the chlorine is accelerated, the rapid and uniform reaction of the diketene is ensured, other chlorinated compounds are prevented from being generated due to overlong contact time of the chlorine and products, and the chlorinated reaction byproducts in the synthesis process of the 4-chloroacetoacetic acid esters are few.
3. According to the green synthesis device of 4-chloroacetoacetic acid esters, provided by the invention, the charges of diketene liquid drops are the same as those on the conductive cylinder, the condensation of the diketene liquid drops on the conductive cylinder is reduced under the action of electrostatic force repulsion, and the contact time of the diketene liquid drops and chlorine is ensured to be close.
4. According to the green synthesis device of 4-chloroacetoacetic acid esters, charges on the diketene liquid drops are transmitted to the ground wire through the grounding net and the grounding wire, and the charges on the diketene liquid drops are conducted away, so that the diketene liquid drops are convenient to condense quickly at the lower part of the inner cavity of the conductive cylinder.
5. In the green synthesis device of 4-chloroacetoacetic acid esters, disclosed by the invention, the ultrasonic vibrator works to vibrate the conductive cylinder, when some diketene liquid drops are accidentally condensed on the inner side of the conductive cylinder, the vibration of the conductive cylinder enables the attached liquid to be separated, and the separated liquid drops are also charged, so that the contact time of the diketene solution and chlorine is similar.
6. According to the green synthesis device of 4-chloroacetoacetic acid esters, disclosed by the invention, the upper end and the lower end of the conductive cylinder are in elastic sealing connection with the upper side and the lower side of the inner cavity of the heat preservation shell through the rubber rings, so that the amplitude of the conductive cylinder is increased, and the separation speed of liquid attached to the conductive cylinder is increased.
7. According to the green synthesis device of 4-chloroacetoacetic acid esters, chlorine is filled in the corrosion-resistant elastic air bag, the corrosion-resistant elastic air bag expands after the chlorine is filled, and the chlorine in the corrosion-resistant elastic air bag enters the conductive cylinder body; maintaining the expansion state of the corrosion-resistant elastic air bag, thereby maintaining sufficient supply of chlorine in the conductive cylinder; the corrosion-resistant elastic air bag ensures that chlorine gas is dynamically supplied along with consumption.
8. According to the green synthesis device of 4-chloroacetoacetic acid esters, disclosed by the invention, gas is injected into the interlayer cavity, and the gas pressure in the interlayer cavity is greater than the gas pressure in the conductive cylinder; the integrity of the surface of the conductive cylinder is checked by detecting the air pressure in the interlayer cavity.
9. According to the green synthesis device of 4-chloroacetoacetic acid esters, the interlayer cavity is vacuumized or compressed gas is injected, and the air pressure in the interlayer cavity is monitored through the barometer, so that the state detection of the conductive cylinder is convenient and rapid.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a partial cross-sectional structural schematic of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 2;
FIG. 4 is a schematic diagram of a conductive cylinder structure according to the present invention.
In the figure: 1 precooler, 2 corrosion-resistant elastic air bags, 3 automatic liquid discharging devices, 4 grounding wires, 5 heat-insulating shells, 6 control switch groups, 7 barometers, 8 electrostatic generators, 9 electrostatic sprayers, 10 grounding nets, 11 rubber rings, 12 conductive cylinder bodies, 13 interlayer cavities and 14 ultrasonic vibrators.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: referring to fig. 1-3, the present embodiment discloses a green synthesis apparatus for 4-chloroacetoacetates, which includes a sealed thermal insulation housing 5, a conductive cylinder 12 is disposed inside the thermal insulation housing 5, both upper and lower ends of the conductive cylinder 12 are fixedly connected to upper and lower sides of an inner cavity of the thermal insulation housing 5 in a sealing manner, an electrostatic generator 8 is disposed outside the thermal insulation housing 5, an output end of the electrostatic generator 8 is connected to a side surface of the conductive cylinder 12 through a cable, and the cable penetrates through the thermal insulation housing 5.
The upper part of the inner cavity of the conductive cylinder 12 is provided with an electrostatic sprayer 9, the outer part of the conductive cylinder 12 is provided with a precooler 1, the liquid outlet of the precooler 1 is communicated with the liquid inlet of the electrostatic sprayer 9 through a liquid guide pipe, and the liquid guide pipe penetrates through the heat preservation shell 5.
The lower side of the heat preservation shell 5 is provided with a liquid outlet communicated with the inner cavity of the conductive cylinder 12, and the liquid outlet is provided with an automatic liquid discharging device 3.
The electrostatic sprayer further comprises a control switch group 6, and the output end of the control switch group 6 is electrically connected with the input end of the electrostatic generator 8 and the input end of the electrostatic sprayer 9 respectively.
The control switch group 6 is provided with control buttons corresponding to the static generator 8 and the static sprayer 9.
The electrostatic generator 8 and the electrostatic atomizer 9 used in the present invention are common electronic components in the prior art, and the operation mode and the circuit structure thereof are well known technologies, and are not described herein.
The precooler 1 is a common device for refrigerating liquid raw materials in the prior art, and is widely applied to industrial and agricultural production and daily life. The precooler 1 is a machine that transfers the heat of a cooled object having a relatively low temperature to an ambient medium to obtain cold. The precooler 1 is also called as a refrigerating machine, and mostly adopts the principle of a semiconductor refrigerating sheet or an air conditioner compressor for refrigeration.
The automatic liquid discharging device 3 is a conventional device, and is commonly used for automatically discharging condensed water at the lower part of a pipeline, an oil-water separator, a gas tank, the bottoms of various filters and the like.
The working process and principle of the embodiment are as follows:
at the beginning: chlorine is filled in the heat preservation shell 5, the solvent is pre-cooled to a temperature between-fifteen and-ten degrees through the pre-cooler 1, the solvent is atomized through the electrostatic atomizer 9, the atomized solvent moves downwards and is condensed at the lower part of the heat preservation shell 5, the condensed solvent is discharged through the automatic liquid discharging device 3, and the solvent pre-cools the chlorine in the heat preservation shell 5.
The prepared diketene solution is cooled to a temperature of fifteen below zero to ten below zero through a precooler 1, the precooled diketene solution is atomized through an electrostatic atomizer 9, the electrostatic atomizer 9 enables the atomized diketene to be charged, an electrostatic generator 8 enables a conductive cylinder 12 to be charged in the same way as the diketene liquid drops, the charges of the diketene liquid drops are the same as the charges of the conductive cylinder 12, condensation of the diketene liquid drops on the conductive cylinder 12 is reduced under the repulsion action of electrostatic force, and the contact time of the diketene liquid drops and chlorine is ensured to be close.
The diketene liquid drops are condensed at the bottom side of the heat-insulating shell 5 and discharged through the automatic liquid discharging device, and chlorine cannot be discharged through the automatic liquid discharging device and enters the esterification reaction kettle.
The downward movement time of the diketene liquid drop from the upper part of the inner cavity of the conductive cylinder 12 is similar, so that the contact time of the diketene liquid drop and chlorine is controlled; the contact area of the diketene liquid drops and the chlorine is large, the reaction speed of the diketene and the chlorine is accelerated, the rapid and uniform reaction of the diketene is ensured, and the generation of other chlorinated compounds due to the overlong contact time of the chlorine and the product is avoided, so that the byproducts in the chlorination reaction in the synthesis process of the 4-chloroacetoacetic acid esters are few.
The diketene solution is precooled, and the diketene solution after the diketene solution and the chlorine react in the conductive cylinder 12 is quickly separated from the conductive cylinder 12, so that the temperature in the conductive cylinder 12 is kept constant.
The green synthesis device of the 4-chloroacetoacetic acid esters abandons the existing water bath constant temperature method and adopts a method of precooling raw materials to keep the reaction at constant temperature.
For the same mass of liquid, the smaller the volume of the atomized liquid drop is, the larger the sum of the surface areas of the liquid drop is, and the larger the contact area of the liquid drop and the gas is.
Example two: as shown in fig. 2, the present embodiment discloses a green synthesis device of 4-chloroacetoacetic acid esters, which has a structure substantially the same as that of the first embodiment, except that a grounding grid 10 is disposed at the lower part of the inner cavity of the conductive cylinder 12, the side surface of the grounding grid 10 is fixedly connected to one end of a grounding wire 4, the other end of the grounding wire 4 penetrates and extends to the outside of the heat preservation shell 5, and the end of the grounding wire 4 located at the outside of the heat preservation shell 5 is connected to the grounding wire.
Preferably, the ground net 10 is made of a metal material or an alloy material.
The working process and principle of the embodiment are as follows: the diketene liquid drops with charges moving to the lower part of the inner cavity of the conductive cylinder 12 are contacted with the grounding net 10, the charges on the diketene liquid drops are transmitted to the ground wire through the grounding net 10 and the grounding wire 4, and the charges on the diketene liquid drops are conducted away, so that the diketene liquid drops are rapidly condensed at the lower part of the inner cavity of the conductive cylinder 12.
Example three: as shown in fig. 2 and 4, in the present embodiment, a green synthesis apparatus of 4-chloroacetoacetic acid esters is disclosed, in addition to the first or second embodiment, an ultrasonic vibrator 14 is fixed on the inner side of the conductive cylinder 12, and the input end of the ultrasonic vibrator 14 is electrically connected with the output end of the control switch group 6.
Preferably, the upper end and the lower end of the conductive cylinder 12 are both fixed with rubber rings 11, and the upper end and the lower end of the conductive cylinder 12 are both connected with the upper side and the lower side of the inner cavity of the heat preservation shell 5 through the rubber rings 11 in a sealing and elastic manner.
The working process and principle of the embodiment are as follows:
the ultrasonic vibrator 14 is controlled to work by controlling the switch group 6, the ultrasonic vibrator 14 vibrates the conductive cylinder 12, when some diketene liquid drops are accidentally condensed on the inner side of the conductive cylinder 12, the vibration of the conductive cylinder 12 enables the attached liquid to be separated, and the separated liquid drops are also charged.
The rubber ring 11 makes the upper and lower both ends of the conductive cylinder 12 all with the sealed elastic connection of the upper and lower both sides of the 5 inner chambers of heat preservation shell, increases the amplitude of the conductive cylinder 12, improves the speed of breaking away from of the adnexed liquid on the conductive cylinder 12.
Example four: as shown in fig. 1 and 2, in the present embodiment, a green synthesis apparatus of 4-chloroacetoacetic acid esters is disclosed, and in addition to the first, second or third embodiments, the lower side of the inside of the heat-insulating casing 5 of the present embodiment is recessed downward, and the liquid discharge port is located at the lowest position of the recessed portion of the lower side of the inside of the heat-insulating casing 5.
The working process and principle of the embodiment are as follows: the lower side of the interior of the heat-insulating shell 5 is downwards concave, so that the diketene solution after the reaction of the lower part of the inner cavity of the conductive cylinder 12 and chlorine can be quickly discharged, the residual time of the diketene solution after the reaction in the conductive cylinder 12 is shortened, and the time of the diketene solution in the conductive cylinder 12 is the same.
Example five: as shown in fig. 1, the present embodiment discloses a green synthesis apparatus of 4-chloroacetoacetic acid esters, which has a structure substantially the same as that of the first embodiment, except that an air injection port communicating with the inside of the conductive cylinder 12 is formed on the outer side of the heat-insulating housing 5 of the present embodiment, the air injection port is connected with an air outlet of the corrosion-resistant elastic airbag 2, and an air inflation port is formed on the corrosion-resistant elastic airbag 2.
The working process and principle of the embodiment are as follows:
chlorine is filled into the corrosion-resistant elastic air bag 2, the corrosion-resistant elastic air bag 2 expands after the chlorine is filled, and the chlorine in the corrosion-resistant elastic air bag 2 enters the conductive cylinder body 12; the expansion state of the corrosion-resistant elastic air bag 2 is kept, so that the sufficient supply of chlorine in the conductive cylinder 12 is kept; the corrosion resistant flexible bladder 2 ensures a dynamic supply of chlorine as it is consumed.
Compared with the existing gas injection of a compressed gas tank or a gas injection of an air pump, the corrosion-resistant elastic gas bag 2 buffers the injected chlorine gas, and the gas pressure in the conductive cylinder 12 is kept stable.
Preferably, the chlorine gas is also pre-cooled to between-fifteen and-ten degrees.
Example six: as shown in fig. 2, the present embodiment discloses a green synthesis apparatus of 4-chloroacetoacetic acid esters, wherein on the basis of the first, second, third, fourth or fifth embodiment, an interlayer cavity 13 is formed between the heat-insulating housing 5 and the conductive barrel 12; gas is injected into the interlayer cavity 13, and the air pressure in the interlayer cavity 13 is greater than the air pressure in the conductive cylinder 12; the integrity of the surface of the conductive cylinder 12 is checked by detecting the gas pressure in the interlayer cavity 13.
The integrity of the surface of the conductive cylinder 12 can also be checked by injecting a gas, such as nitrogen, hydrogen or a rare gas, into the interlayer chamber 13, which does not affect the chlorination reaction, and periodically checking the gas composition in the conductive cylinder 12.
Example seven: as shown in fig. 2 and fig. 3, the present embodiment discloses a green synthesis device of 4-chloroacetoacetic acid esters, which has a structure substantially the same as that of the first embodiment, except that an interlayer cavity 13 is formed between the heat-insulating housing 5 and the conductive cylinder 12; the interlayer cavity 13 is vacuumized, and the air pressure in the interlayer cavity 13 is smaller than the air pressure in the conductive cylinder 12.
The integrity of the surface of the conductive cylinder 12 is checked by detecting the gas pressure in the interlayer cavity 13.
Example eight: as shown in fig. 2, the present embodiment discloses a green synthesis apparatus for 4-chloroacetoacetic acid esters, in a sixth embodiment or a seventh embodiment, a detection hole communicated with the interlayer cavity 13 is formed on the outer side of the heat preservation housing 5 of the present embodiment, and an air pressure gauge 7 is installed on the outer side of the detection hole; the barometer 7 displays the air pressure in the interlayer cavity 13, when the air pressure in the interlayer cavity 13 changes, it indicates that the conductive cylinder 12 is damaged, the electric field on the surface of the conductive cylinder 12 changes, and diketene liquid drops possibly agglomerate in the conductive cylinder 12, but the conductive cylinder 12 is located in the heat-insulating shell 5, and the integrity of the conductive cylinder 12 with the larger height of the conductive cylinder 12 is inconvenient to detect.
The barometer 7 is used for monitoring the air pressure in the interlayer cavity 13, so that the state of the conductive cylinder 12 can be conveniently and quickly detected.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A green synthesis device of 4-chloroacetoacetic acid esters is characterized in that: the insulation device comprises a sealed insulation shell (5), wherein a conductive cylinder (12) is arranged inside the insulation shell (5), the upper end and the lower end of the conductive cylinder (12) are fixedly connected with the upper side and the lower side of an inner cavity of the insulation shell (5) in a sealing manner, an electrostatic generator (8) is arranged outside the insulation shell (5), the output end of the electrostatic generator (8) is connected with the side surface of the conductive cylinder (12) through a cable, and the cable penetrates through the insulation shell (5);
an electrostatic sprayer (9) is arranged at the upper part of the inner cavity of the conductive cylinder (12), a precooler (1) is arranged outside the conductive cylinder (12), the liquid outlet of the precooler (1) is communicated with the liquid inlet of the electrostatic sprayer (9) through a liquid guide pipe, and the liquid guide pipe penetrates through the heat-insulating shell (5);
a liquid discharge port communicated with the inner cavity of the conductive cylinder body (12) is formed in the lower side of the heat preservation shell (5), and an automatic liquid discharge device (3) is mounted on the liquid discharge port;
the electrostatic sprayer also comprises a control switch group (6), wherein the output end of the control switch group (6) is respectively and electrically connected with the input end of the electrostatic generator (8) and the input end of the electrostatic sprayer (9).
2. The apparatus for green synthesis of 4-chloroacetoacetates according to claim 1, wherein: the lower part of conductive cylinder (12) inner chamber is provided with ground net (10), the side of ground net (10) and the one end fixed connection of earth connection (4), and the other end of earth connection (4) runs through and extends to the outside of heat preservation casing (5), one end and the ground connection that earth connection (4) are located the heat preservation casing (5) outside are connected.
3. The apparatus for green synthesis of 4-chloroacetoacetates according to claim 1, wherein: an ultrasonic vibrator (14) is fixed on the inner side of the conductive cylinder (12), and the input end of the ultrasonic vibrator (14) is electrically connected with the output end of the control switch group (6).
4. The apparatus for green synthesis of 4-chloroacetoacetates of claim 3, wherein: the upper end and the lower end of the conductive cylinder body (12) are both fixed with rubber rings (11), and the upper end and the lower end of the conductive cylinder body (12) are both in sealed elastic connection with the upper side and the lower side of the inner cavity of the heat-insulating shell (5) through the rubber rings (11).
5. The apparatus for green synthesis of 4-chloroacetoacetates according to claim 1, wherein: the lower side of the interior of the heat preservation shell (5) is sunken downwards, and the liquid discharge port is located at the lowest position of the sunken part of the interior lower side of the heat preservation shell (5).
6. A green synthesis plant of 4-chloroacetoacetates according to any of claims 1-5, characterized in that: the gas injection port communicated with the interior of the conductive cylinder body (12) is formed in the outer side of the heat-insulating shell (5), the gas injection port is connected with the gas outlet of the corrosion-resistant elastic gas bag (2), and the gas filling port is formed in the corrosion-resistant elastic gas bag (2).
7. The apparatus for green synthesis of 4-chloroacetoacetates according to claim 1, wherein: the heat-insulating shell (5) is made of insulating engineering plastic materials or insulating paint is arranged on the inner side of the heat-insulating shell (5).
8. The apparatus for green synthesis of 4-chloroacetoacetates according to claim 1, wherein: an interlayer cavity (13) is formed between the heat-insulating shell (5) and the conductive cylinder body (12), gas is injected into the interlayer cavity (13), and the gas pressure in the interlayer cavity (13) is greater than the gas pressure in the conductive cylinder body (12).
9. The apparatus for green synthesis of 4-chloroacetoacetates according to claim 1, wherein: an interlayer cavity (13) is formed between the heat-insulating shell (5) and the conductive cylinder body (12), the interlayer cavity (13) is vacuumized, and the air pressure in the interlayer cavity (13) is smaller than the air pressure in the conductive cylinder body (12).
10. The apparatus for green synthesis of 4-chloroacetoacetates according to claim 8 or 9, characterized in that: the detection hole that communicates intermediate layer chamber (13) is seted up in heat preservation casing (5) outside, barometer (7) are installed to the detection hole outside.
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| US20190322945A1 (en) * | 2016-12-30 | 2019-10-24 | Eme International Limited | Apparatus and method for producing biomass derived liquid, bio-fuel and bio-material |
| CN108883385A (en) * | 2017-10-16 | 2018-11-23 | 天津策浪生物科技有限公司 | Electrospray device, fluid unit and method for fluid unit |
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