CN208694996U - A kind of Benzophenonehydrazones production collection reflux unit - Google Patents
A kind of Benzophenonehydrazones production collection reflux unit Download PDFInfo
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- CN208694996U CN208694996U CN201821170136.7U CN201821170136U CN208694996U CN 208694996 U CN208694996 U CN 208694996U CN 201821170136 U CN201821170136 U CN 201821170136U CN 208694996 U CN208694996 U CN 208694996U
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- reaction kettle
- glass shell
- reaction
- condenser
- benzophenonehydrazones
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Abstract
The utility model relates to a kind of Benzophenonehydrazones to produce with setting benzophenone, hydrazine hydrate and hydrochloric acid in reflux unit, including reaction kettle, reaction kettle is collected, and carry out into hydrazone reaction；It is characterized by comprising be condensed back pipeline, liquefaction collection device and exhaust gas absorption cell；It is first passed through in the utility model and is condensed back the output end that reaction kettle is arranged in pipeline, the reaction organic matter and product that evaporate in reaction kettle progress natural cooling are flowed back into reaction kettle, the gaseous material of generation then enters liquefaction collection device, by liquefied organic matter secondary back, such tower reaction can make the time shorten half, the content for the hydrazine hydrate taken out of simultaneously, with regard to not having to carry out second distillation, reduces security risk lower than 5%.
Description
Technical field
The utility model relates to chemical production field more particularly to a kind of Benzophenonehydrazones production point collection reflux dresses
It sets.
Background technique
Dehydrated alcohol is pumped into reaction kettle with vacuum in the general production technology of Benzophenonehydrazones, hexichol first is then added
Ketone, hydrazine hydrate and hydrochloric acid are carried out into hydrazone reaction, and reaction kettle Nei Wenda is 90 DEG C~100 DEG C, cooling with cooling water under stirring condition
Crystallization is precipitated in reaction solution, and centrifugal rejection filter solid product is added in reaction kettle after getting rid of, pure water, glacial acetic acid is added to be impregnated,
Stirring, centrifugal rejection filter guarantee filtrate drying, and decompression drying obtains finished product；
The shortcomings that old technique is to carry out band water using n-butanol to separate in band water during the reaction, this belt transect water is anti-
Long between seasonable, the hydrazine hydrate of recycling is thus carried out second distillation to 50% 25 ~ 40% by the hydrazine hydrate content taken out of,
If control is bad in distillation process, the danger of explosion can be generated after solubility superelevation, use tower reaction time shortening half instead now,
The content for the hydrazine hydrate taken out of simultaneously is lower than 5%, with regard to not having to carry out second distillation.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of Benzophenonehydrazones to produce with reflux unit is collected, can
Solve the general risk for needing the hydrazine hydrate of recycling to carry out when separating distillation and concentration with water using n-butanol and there is explosion
Problem.
In order to solve the above technical problems, the technical solution of the utility model are as follows: a kind of production of Benzophenonehydrazones is with collecting back
It flows and benzophenone, hydrazine hydrate and hydrochloric acid is set in device, including reaction kettle, reaction kettle, carry out into hydrazone reaction；Its innovative point exists
In: including being condensed back pipeline, liquefaction collection device and exhaust gas absorption cell；
The top for being condensed back pipeline and being arranged vertically at reaction kettle, two difference for being condensed back pipeline
End is provided with the flange being connected with reaction kettle and liquefaction collection device；
The liquefaction collection device includes main condenser, auxiliary condenser and glass shell；The main condenser includes cold
But section and metering section；Cooling section and metering section are same straight tube structure, and the top of cooling section connects with pipe outlet is condensed back
It is logical, scale value is carved on metering section；The end portion of metering section is provided with valve；The side of the auxiliary condenser and main condenser
Wall is connected, and auxiliary condenser is spherical condensation tube structure；The straight tube structure of the main condenser and the spherical shape of auxiliary condenser are cold
Solidifying pipe structure is placed in inside the same glass shell；The bottom end of glass shell is provided with inlet, the upper end side of glass shell
Wall is respectively arranged with the outlet of liquid outlet and auxiliary condenser；The inside of glass shell and main condenser and auxiliary condenser it
Between filled with the coolant liquid flowed from glass shell inlet to glass shell liquid outlet；
It is connected on reaction kettle at the valve of the metering section bottom end by pipeline, the exit of the auxiliary condenser connects
It is connected to exhaust gas absorption cell.
Further, the bottom end of the reaction kettle is provided in leakage fluid dram and reaction kettle and is provided with blender.
Further, the diameter for being condensed back pipeline is greater than the diameter of connecting pipe.
Utility model has the advantages that
1) it is first passed through in the utility model and is condensed back the output end that reaction kettle is arranged in pipeline, by what is evaporated in reaction kettle
Reaction organic matter and product carry out natural cooling and flow back into reaction kettle, and the gaseous material of generation then enters liquefaction and collects dress
It sets, by liquefied organic matter secondary back, such tower reaction can make the time shorten half, while the hydrazine hydrate taken out of
Content be lower than 5%, just do not have to progress second distillation, reduce security risk.
Detailed description of the invention
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is a kind of benzophenone production collection reflux unit structure chart of the utility model.
Fig. 2 is a kind of benzophenone production liquefaction collection device of the utility model.
Specific embodiment
The following examples can make professional and technical personnel that the utility model be more fully understood, but therefore will not
The utility model is limited among the embodiment described range.
A kind of Benzophenonehydrazones production as shown in Figure 1 is used to collect to be arranged in reflux unit, including reaction kettle 1, reaction kettle 1
Benzophenone, hydrazine hydrate and hydrochloric acid are carried out into hydrazone reaction；Including being condensed back pipeline 2, liquefaction collection device 3 and tail gas absorption
Pond 4.
It is condensed back the top that pipeline 2 is arranged vertically at reaction kettle 1, two difference for being condensed back pipeline 2
End is provided with the flange being connected with reaction kettle 1 and liquefaction collection device 3.
The collection device 3 that liquefies includes main condenser 31, auxiliary condenser 32 and glass shell 33；The main condenser 31 wraps
Include cooling section 311 and metering section 312；Cooling section 311 and metering section 312 are same straight tube structure, the top of cooling section 311 with
It is condensed back the outlet of pipeline 2 to connect, is carved with scale value on metering section 312；The end portion of metering section 312 is provided with valve 313；
The auxiliary condenser 32 is connected with the side wall of main condenser 31, and auxiliary condenser 32 is spherical condensation tube structure；The master is cold
The straight tube structure of condenser 31 and the spherical condensation tube structure of auxiliary condenser 32 are placed in inside the same glass shell 33；Glass
The bottom end of shell 33 is provided with inlet 331, and the upper end side wall of glass shell 33 is respectively arranged with liquid outlet 332 and auxiliary condenses
The outlet of device；Filled with from glass shell inlet between the inside and main condenser 31 and auxiliary condenser 32 of glass shell 33
331 coolant liquids flowed to glass shell liquid outlet 332.
It is connected on reaction kettle 1 at the valve 313 of 312 bottom end of metering section by pipeline, the outlet of the auxiliary condenser
Place is connected with exhaust gas absorption cell 4.
The bottom end of reaction kettle 1 is provided in leakage fluid dram and reaction kettle and is provided with blender.
The diameter for being condensed back pipeline 2 is greater than the diameter of connecting pipe.
It should be understood by those skilled in the art that the present utility model is not limited to the above embodiments, above-described embodiment and
Only illustrate the principles of the present invention described in specification, on the premise of not departing from the spirit and scope of the utility model,
The utility model also has various changes and improvements, these changes and improvements both fall within the scope of the claimed invention
It is interior.The protection scope of the present invention is defined by the appended claims and their equivalents.
Claims (3)
1. a kind of Benzophenonehydrazones production setting benzophenone, hydrazine hydrate in collection reflux unit, including reaction kettle, reaction kettle
And hydrochloric acid, it carries out into hydrazone reaction；It is characterized by comprising be condensed back pipeline, liquefaction collection device and exhaust gas absorption cell；
The top for being condensed back pipeline and being arranged vertically at reaction kettle, end is set the two of the condensing reflux pipeline respectively
It is equipped with the flange being connected with reaction kettle and liquefaction collection device；
The liquefaction collection device includes main condenser, auxiliary condenser and glass shell；The main condenser includes cooling section
And metering section；Cooling section and metering section are same straight tube structure, and the top of cooling section and condensing reflux pipe outlet are connected, meter
Scale value is carved in amount section；The end portion of metering section is provided with valve；The side wall phase of the auxiliary condenser and main condenser
Even, auxiliary condenser is spherical condensation tube structure；The straight tube structure of the main condenser and the spherical condensation tube of auxiliary condenser
Structure is placed in inside the same glass shell；The bottom end of glass shell is provided with inlet, the upper end side wall point of glass shell
It is not provided with the outlet of liquid outlet and auxiliary condenser；It is filled between the inside and main condenser and auxiliary condenser of glass shell
There is the coolant liquid flowed from glass shell inlet to glass shell liquid outlet；
It is connected on reaction kettle at the valve of the metering section bottom end by pipeline, the exit of the auxiliary condenser is connected with
Exhaust gas absorption cell.
2. a kind of Benzophenonehydrazones production collection reflux unit according to claim 1, it is characterised in that: the reaction
The bottom end of kettle is provided in leakage fluid dram and reaction kettle and is provided with blender.
3. a kind of Benzophenonehydrazones production collection reflux unit according to claim 1, it is characterised in that: the condensation
The diameter of reflux line is greater than the diameter of connecting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821170136.7U CN208694996U (en) | 2018-07-24 | 2018-07-24 | A kind of Benzophenonehydrazones production collection reflux unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821170136.7U CN208694996U (en) | 2018-07-24 | 2018-07-24 | A kind of Benzophenonehydrazones production collection reflux unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208694996U true CN208694996U (en) | 2019-04-05 |
Family
ID=65939635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821170136.7U Expired - Fee Related CN208694996U (en) | 2018-07-24 | 2018-07-24 | A kind of Benzophenonehydrazones production collection reflux unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208694996U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110433734A (en) * | 2019-08-14 | 2019-11-12 | 南通鸿富达利化工有限公司 | A kind of pinacoline condensation reaction exhaust apparatus |
| CN115536546A (en) * | 2022-10-26 | 2022-12-30 | 重庆长风化学工业有限公司 | Synthesis method of benzophenone hydrazone |
-
2018
- 2018-07-24 CN CN201821170136.7U patent/CN208694996U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110433734A (en) * | 2019-08-14 | 2019-11-12 | 南通鸿富达利化工有限公司 | A kind of pinacoline condensation reaction exhaust apparatus |
| CN115536546A (en) * | 2022-10-26 | 2022-12-30 | 重庆长风化学工业有限公司 | Synthesis method of benzophenone hydrazone |
| CN115536546B (en) * | 2022-10-26 | 2023-10-27 | 重庆长风化学工业有限公司 | Synthesis method of benzophenone hydrazone |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190405 Termination date: 20210724 |