CN208454853U - A kind of benzene acetonitrile continuous rectification apparatus - Google Patents
A kind of benzene acetonitrile continuous rectification apparatus Download PDFInfo
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- CN208454853U CN208454853U CN201820930527.8U CN201820930527U CN208454853U CN 208454853 U CN208454853 U CN 208454853U CN 201820930527 U CN201820930527 U CN 201820930527U CN 208454853 U CN208454853 U CN 208454853U
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Abstract
The utility model discloses a kind of benzene acetonitrile continuous rectification apparatus, including taking off light portion and being connected to the de- heavy portion for taking off light portion end, it is described that take off light portion include crude product storage tank, tank connected feed pump one is stored up by pipeline and crude product, the preheater being connect by pipeline with feed pump one, the lightness-removing column being connect by pipeline with feed pump one, portion is evaporated before connecting with lightness-removing column tower top, reboiler one, the feed inlet of the reboiler one is connected by the tower bottom of pipeline and lightness-removing column, the discharge port of reboiler one is connected by the lower part of pipeline and lightness-removing column, the de- weight portion includes reboiler two, the feed pump two being connect with the tower bottom of lightness-removing column, the weight-removing column being connect by pipeline with feed pump two, it is connected to the separation unit of weight-removing column tower top connection, the feed inlet of the reboiler two is connected by the tower bottom of pipeline and weight-removing column, the discharge port of reboiler two passes through pipe The connection of the lower part of road and weight-removing column.The utility model purification benzene acetonitrile has the advantages that good separating effect, product yield are high and low energy consumption.
Description
Technical field
The utility model belongs to fine chemistry industry technical field of rectification, and in particular to a kind of benzene acetonitrile continuous rectification apparatus.
Background technique
Currently, benzene acetonitrile crude reaction separating-purifying all uses intermittent rectification and purification technology, this method of purification and
That there are separating effects is bad for device, and energy consumption is higher, the not high disadvantage of product yield.A kind of increase yield improves yield, reduces energy
Consumption becomes benzene acetonitrile crude reaction separating-purifying field problem in the urgent need to address.
Utility model content
The utility model provides a kind of benzene acetonitrile continuous rectification apparatus, including takes off light portion and de- weight portion, and the utility model mentions
Purified petroleum benzin acetonitrile has the advantages that good separating effect, product yield are high and low energy consumption.
In order to solve the above technical problems, the utility model adopts the following technical solution:
A kind of benzene acetonitrile continuous rectification apparatus is described de- light including taking off light portion and being connected to the de- heavy portion for taking off light portion end
The preheating that portion includes crude product storage tank, by pipeline stores up tank connected feed pump one with crude product, is connect by pipeline with feed pump one
Device, the lightness-removing column being connect by pipeline with feed pump one evaporate portion, reboiler one before connecting with lightness-removing column tower top, described to boil again
The feed inlet of device one is connected by the tower bottom of pipeline and lightness-removing column, and the discharge port of reboiler one passes through the lower part of pipeline and lightness-removing column
Connection, the de- weight portion include reboiler two, the feed pump connecting with the tower bottom of lightness-removing column two, by pipeline and the company of feed pump two
The feed inlet of the weight-removing column that connects, the separation unit for being connected to the connection of weight-removing column tower top, the reboiler two passes through pipeline and weight-removing column
Tower bottom connection, the discharge port of reboiler two connected by the lower part of pipeline and weight-removing column.
Further, evaporating portion before described includes condenser one, gas-liquid separator one, receiving unit one, and the condenser one goes out
Material mouth connects the feed inlet of gas-liquid separator one by pipeline, and the discharge port of the gas-liquid separator one passes through pipeline and lightness-removing column
Top and receiving unit one connect.
Further, the separation unit includes condenser two, gas-liquid separator two, receiving unit two, and the condenser two goes out
Material mouth connects the feed inlet of gas-liquid separator two by pipeline, and the discharge port of the gas-liquid separator two passes through pipeline and weight-removing column
Top and receiving unit two connect.
Further, receiving unit one is composed in parallel by preceding evaporating receiving tank one and before evaporating receiving tank two.
Further, receiving unit two is composed in parallel by product receiving tank one and product receiving tank two.
Working principle of the utility model is:
Reaction obtain benzene acetonitrile crude product from crude product storage tank by feed pump one by preheater from lightness-removing column intermediate into
Material mouth charging, material flow to lightness-removing column tower bottom and carry out heating evaporation through reboiler one, and gas carries out substance friendship through de-light rectification column
Separation is changed, from tower top after condensing, the liquid condensed out enters in gas-liquid separator one light-component gas, gas-liquid separator one
It is connect with lightness-removing column reflux pipeline, tower top temperature can be controlled by valve regulated return flow；Gas-liquid separator one and reception
Portion one is connected to acquire light component.
For the de- light rear feed pump two that passes through of lightness-removing column substrate material from weight-removing column intermediate throat-fed, material flow to weight-removing column
Tower bottom carries out heating evaporation by reboiler two, and gas carries out mass exchange separation through de- heavy distillation column, and product gas is from tower top
After condensing, the liquid condensed out enters in gas-liquid separator two, and gas-liquid separator two is connect with weight-removing column reflux pipeline, can
To control tower top temperature by valve regulated return flow；Gas-liquid separator two is connected to acquire refined product with receiving unit two.
Raffinate body is discharged from weight-removing column outlet at bottom.
The utility model has the beneficial effects that
When traditional intermittent fractionation purification, when charging, discharging and conveying of the benzene acetonitrile between each process, is be easy to cause
Benzene acetonitrile loss, the utility model use continuous rectification method, and the purification of benzene acetonitrile crude product is that the process of fine work is continuous, can be avoided benzene
Loss of the acetonitrile in each procedure connection.
The utility model just has lightness-removing column cooperation lightness-removing column gas-liquid separator to realize reflux and isolate and purify, weight-removing column cooperation
Weight-removing column gas-liquid separator realizes reflux and isolates and purifies that lightness-removing column and weight-removing column cooperation remove light impurities and heavy impurity,
Purification effect is good, and reflux enables to product by repeatedly purifying, further promotes purification effect.
The utility model takes off light portion treated benzene acetonitrile with heat, this partial heat can be directly sharp by de- weight portion
With reaching energy-efficient effect to reduce the loss of energy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Symbol description in figure: taking off light portion 1, de- weight portion 2, crude product storage tank 3, feed pump 1, preheater 5, and lightness-removing column 6 is preceding to evaporate
Portion 7, reboiler 1, reboiler 29, feed pump 2 10, weight-removing column 11, separation unit 12, gas-liquid separator 1, receiving unit one
14, condenser 2 15, gas-liquid separator 2 16, receiving unit 2 17, preceding to evaporate receiving tank 1, preceding to evaporate receiving tank 2 19, product connects
Closed cans 1, product receiving tank 2 21, condenser 1.
Specific embodiment
The utility model specific embodiment is described further referring to attached drawing.
A kind of benzene acetonitrile continuous rectification apparatus, it is described de- including taking off light portion 1 and being connected to the de- weight portion 2 for taking off light 1 end of portion
Light portion 1 is connect including crude product storage tank 3, the feed pump 1 being connect by pipeline with crude product storage tank 3, by pipeline with feed pump 1
Preheater 5, connect by pipeline with feed pump 1 lightness-removing column 6, connect with 6 tower top of lightness-removing column before evaporate portion 7, reboiler
One 8, the feed inlet of the reboiler 1 is connect by pipeline with the tower bottom of lightness-removing column 6, and the discharge port of reboiler 1 passes through pipe
Road is connect with the lower part of lightness-removing column 6, the feed pump two that the de- weight portion 2 includes reboiler 29, connect with the tower bottom of lightness-removing column 6
10, the weight-removing column 11 that is connect by pipeline with feed pump 2 10, the separation unit 12 for being connected to the connection of 11 tower top of weight-removing column, it is described again
The feed inlet of boiling device 29 is connect by pipeline with the tower bottom of weight-removing column 11, and the discharge port of reboiler 29 passes through pipeline and weight-removing column
11 lower part connection.
It includes condenser 1, gas-liquid separator 1, receiving unit 1 that portion 7 is evaporated before described, and the condenser 1 goes out
Material mouth connects the feed inlet of gas-liquid separator 1 by pipeline, and the discharge port of the gas-liquid separator 1 by pipeline and takes off
The top of light tower 6 and receiving unit 1 connect.
The separation unit 12 includes condenser 2 15, gas-liquid separator 2 16, receiving unit 2 17, and the condenser 2 15 goes out
Material mouth connects the feed inlet of gas-liquid separator 2 16 by pipeline, and the discharge port of the gas-liquid separator 2 16 by pipeline and takes off
The top of weight tower 11 and receiving unit 2 17 connect.
Receiving unit 1 is composed in parallel by preceding evaporating receiving tank 1 and before evaporating receiving tank 2 19.
Receiving unit 2 17 is composed in parallel by product receiving tank 1 and product receiving tank 2 21.
The protection scope of the utility model is not limited merely to above-described embodiment, skill belonging to the idea of the present invention
Art scheme belongs to the protection scope of the utility model.It should be pointed out that for those skilled in the art,
Several improvements and modifications under the premise of the utility model principle are not departed from, these improvements and modifications also should be regarded as the utility model
Protection scope.
Claims (5)
1. a kind of benzene acetonitrile continuous rectification apparatus, which is characterized in that take off light portion (1) end including taking off light portion (1) and being connected to
De- weight portion (2), the feed pump one for taking off light portion (1) and including crude product storage tank (3), being connect by pipeline with crude product storage tank (3)
(4), the preheater (5) being connect by pipeline with feed pump one (4), the lightness-removing column being connect by pipeline with feed pump one (4)
(6), portion (7), reboiler one (8) are evaporated before connecting with lightness-removing column (6) tower top, the feed inlet of the reboiler one (8) passes through pipe
Road is connect with the tower bottom of lightness-removing column (6), and the discharge port of reboiler one (8) is connect by pipeline with the lower part of lightness-removing column (6), described
De- weight portion (2) include reboiler two (9), the feed pump two (10) connecting with the tower bottom of lightness-removing column (6), by pipeline and feed pump
The weight-removing column (11) of two (10) connection, the separation unit (12) for being connected to the connection of weight-removing column (11) tower top, the reboiler two (9)
Feed inlet is connect by pipeline with the tower bottom of weight-removing column (11), and the discharge port of reboiler two (9) passes through pipeline and weight-removing column (11)
Lower part connection.
2. benzene acetonitrile continuous rectification apparatus according to claim 1, which is characterized in that evaporating portion (7) before described includes condensation
Device one (22), gas-liquid separator one (13), receiving unit one (14), condenser one (22) discharge port connect gas-liquid by pipeline
The feed inlet of separator one (13), the discharge port of the gas-liquid separator one (13) by the top of pipeline and lightness-removing column (6) and
Receiving unit one (14) connection.
3. benzene acetonitrile continuous rectification apparatus according to claim 1, which is characterized in that the separation unit (12) includes condensation
Device two (15), gas-liquid separator two (16), receiving unit two (17), condenser two (15) discharge port connect gas-liquid by pipeline
The feed inlet of separator two (16), the discharge port of the gas-liquid separator two (16) by the top of pipeline and weight-removing column (11) and
Receiving unit two (17) connection.
4. benzene acetonitrile continuous rectification apparatus according to claim 2, which is characterized in that receiving unit one (14) is by preceding evaporating reception
Tank one (18) and before evaporate receiving tank two (19) and compose in parallel.
5. benzene acetonitrile continuous rectification apparatus according to claim 3, which is characterized in that receiving unit two (17) is received by product
Tank one (20) and product receiving tank two (21) compose in parallel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820930527.8U CN208454853U (en) | 2018-06-11 | 2018-06-11 | A kind of benzene acetonitrile continuous rectification apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820930527.8U CN208454853U (en) | 2018-06-11 | 2018-06-11 | A kind of benzene acetonitrile continuous rectification apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110746267A (en) * | 2019-12-03 | 2020-02-04 | 湖南莱万特化工有限公司 | Preparation method and preparation device of 2, 3-dichloropropene compound |
| CN110841585A (en) * | 2019-10-14 | 2020-02-28 | 吴剑华 | Benzyl cyanide production device and use method thereof |
| CN110903161A (en) * | 2019-12-03 | 2020-03-24 | 湖南莱万特化工有限公司 | Preparation method and preparation device of 1, 2, 3-trichloropropane compound |
| CN111056540A (en) * | 2019-12-25 | 2020-04-24 | 中船重工（邯郸）派瑞特种气体有限公司 | Electrolytic NF3Continuous pre-purification device and continuous pre-purification method |
-
2018
- 2018-06-11 CN CN201820930527.8U patent/CN208454853U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110841585A (en) * | 2019-10-14 | 2020-02-28 | 吴剑华 | Benzyl cyanide production device and use method thereof |
| CN110746267A (en) * | 2019-12-03 | 2020-02-04 | 湖南莱万特化工有限公司 | Preparation method and preparation device of 2, 3-dichloropropene compound |
| CN110903161A (en) * | 2019-12-03 | 2020-03-24 | 湖南莱万特化工有限公司 | Preparation method and preparation device of 1, 2, 3-trichloropropane compound |
| CN111056540A (en) * | 2019-12-25 | 2020-04-24 | 中船重工（邯郸）派瑞特种气体有限公司 | Electrolytic NF3Continuous pre-purification device and continuous pre-purification method |
| CN111056540B (en) * | 2019-12-25 | 2023-09-15 | 中船(邯郸)派瑞特种气体股份有限公司 | Electrolytic NF 3 Continuous prepurification device and continuous prepurification method |
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