CN204073480U - A kind of rectifying device - Google Patents
A kind of rectifying device Download PDFInfo
- Publication number
- CN204073480U CN204073480U CN201420534817.2U CN201420534817U CN204073480U CN 204073480 U CN204073480 U CN 204073480U CN 201420534817 U CN201420534817 U CN 201420534817U CN 204073480 U CN204073480 U CN 204073480U
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- rectifying column
- tower reactor
- outlet
- discharge tank
- reactor discharge
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Abstract
The utility model discloses a kind of rectifying device, it comprises: rectifying column (1), condenser (2), overhead extraction tank (4), reboiler (3) and tower reactor discharge tank (5), the tower top outlet of described rectifying column (1) is connected with the entrance of described condenser (2), the outlet of described condenser (2) is connected with the entrance of the upper return mouth of described rectifying column (1) with described overhead extraction tank (4), the tower bottom outlet of described rectifying column (1) is connected with the entrance of described reboiler (3) with the top entry of described tower reactor discharge tank (5), and the outlet of described reboiler (3) is connected with the lower return mouth of described rectifying column (1), the top exit of described tower reactor discharge tank (5) is connected with one end of pressure-equalizing line (E), and the other end of described pressure-equalizing line (E) is connected with the lower openings of described rectifying column (1).Adopt the said equipment to economize on resources, reduce the processing cost to the gas of being gone out by blow-down pipe.
Description
Technical field
The utility model relates to a kind of rectifying device.
Background technology
Rectifying is separated the typical unit operations of mutually soluble liquids mixture in Chemical Manufacture, its essence is multistage distillation, namely under a certain pressure, utilize boiling point or the saturated vapor pressure difference of each component of mutually soluble liquids mixture, light component (component that boiling point is lower or saturated vapor pressure is higher) is vaporized, through repeatedly Partial Liquid Phase vaporization and partial gas phase condensation, the light component in gas phase and the heavy constituent concentration in liquid phase are raised gradually, thus realize being separated.
Be boundary for the rectifying column of rectifying with feed plate, top is rectifying section, and bottom is stripping section.After the feed liquid of uniform temperature and pressure enters rectifying column, light component concentrates gradually at rectifying section, and leave all condensations after tower top, a part is as overhead product (being also distillate), and it is interior as phegma that another part is admitted to tower.The object of phegma is the light component on supplementary pedal, makes the liquid composition on column plate keep stable, ensures that rectifying column is vaporized continuously and stably.And heavy constituent concentrated in stripping section after, a part is as tower reactor product (being also raffinate), a part of then send back in tower as distillation operation provides the vapor stream of a certain amount of continuous rising after reboiler heats.
In practical operation, when tower reactor liquid level reaches operation limit level, operating personnel can open tower reactor discharge tank emptying valve and tower reactor discharge valve, tower bottoms body is divided and is transferred to tower reactor discharge tank, when tower reactor liquid level reaches operation low limit level, close tower reactor discharge valve and tower reactor discharge tank emptying valve, distillation operation is subnormal again to carry out.In tower reactor discharge tank, material is transferred to other workshop section's reprocessing of technique according to process condition in good time.
In this operating process, because the emptying of tower reactor discharge tank is in opening, and kettle material temperature is relatively high, because gas-phase space becomes large after material enters into tower reactor discharge tank, a large amount of volatilization gas is overflowed from blow-down pipe, not only cause tail gas treating unit processing load, also add the supplies consumption waste material of Tower System, be also unfavorable for carrying out of cleaner production work.
Utility model content
The purpose of this utility model is to overcome the defect that in existing rectifying device, tower reactor drawing mechanism exists, and provides a kind of rectifying device with the tower reactor drawing mechanism of equalizing pressure pipeline.
To achieve these goals, the utility model provides a kind of rectifying device, and this rectifying device comprises: rectifying column, condenser, overhead extraction tank, reboiler and tower reactor discharge tank; Wherein, the tower top outlet of described rectifying column is connected with the entrance of described condenser, the outlet of described condenser is connected with the entrance of the upper return mouth of described rectifying column with described overhead extraction tank, the tower bottom outlet of described rectifying column is connected with the entrance of described reboiler with the top entry of described tower reactor discharge tank, and the outlet of described reboiler is connected with the lower return mouth of described rectifying column, the described top exit of tower reactor discharge tank is connected with one end of pressure-equalizing line, and the other end of described pressure-equalizing line is connected with the lower openings of described rectifying column.
Preferably, described pressure-equalizing line, near the junction of the top exit of described tower reactor discharge tank is provided with valve, is provided with valve close with the junction of the lower openings of described rectifying column.
Preferably, the outside of described pressure-equalizing line has can the condensing plant that flows through of Cooling Water, the cooling water inlet of this condensing plant is arranged near described pressure-equalizing line and described rectifying column junction, and the coolant outlet of this condensing plant is arranged near described pressure-equalizing line and described tower reactor discharge tank junction.
Preferably, with the height of described rectifying column for benchmark, the lower openings of the described rectifying column be connected with described pressure-equalizing line is positioned at described rectifying column from the bottom up less than 1/5 section.
More preferably, with the height of described rectifying column for benchmark, the lower openings of the described rectifying column be connected with described pressure-equalizing line is positioned at described rectifying column 1/10-1/5 section from the bottom up.
Preferably, the top of described tower reactor discharge tank is also connected with blow-down pipe, and this blow-down pipe is provided with valve in the junction near itself and described tower reactor discharge tank.
Preferably, with the height of described rectifying column for benchmark, within the upper return mouth of the described rectifying column be connected with the outlet of described condenser is positioned at described rectifying column from top to bottom 1/5 section.
More preferably, with the height of described rectifying column for benchmark, the upper return mouth of the described rectifying column be connected with the outlet of described condenser is positioned at described rectifying column 1/10-1/5 section from top to bottom.
Preferably, with the height of described rectifying column for benchmark, the lower return mouth of the described rectifying column be connected with the outlet of described reboiler is positioned at described rectifying column from the bottom up less than 1/3 section and is positioned at more than the lower openings of described rectifying column.
More preferably, with the height of described rectifying column for benchmark, the lower return mouth of the described rectifying column be connected with the outlet of described reboiler is positioned at described rectifying column 1/4-1/3 section from the bottom up.
By adopting rectifier unit of the present utility model, can in the process of tower reactor discharging, reasonably utilize the gas fraction that tower reactor discharge tank is vaporized again, save resource, thus the processing cost reduced the gas of being gone out by blow-down pipe, particularly for low boiling material (n-hexane, toluene etc.), very there is industrial utility value.
Other features and advantages of the utility model are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for description, is used from explanation the utility model, but does not form restriction of the present utility model with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the rectifying device according to a kind of embodiment of the present utility model.
Description of reference numerals
1 rectifying column
2 condensers
3 reboilers
4 overhead extraction tanks
5 tower reactor discharge tanks
A charging
B overhead extraction liquid
The discharging of C tower reactor
D blow-down pipe
E pressure-equalizing line
Detailed description of the invention
Below detailed description of the invention of the present utility model is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
As shown in Figure 1, the utility model provides a kind of rectifying device, and this rectifying device comprises: rectifying column 1, condenser 2, overhead extraction tank 4, reboiler 3 and tower reactor discharge tank 5, wherein, the tower top outlet of described rectifying column 1 is connected with the entrance of described condenser 2, the outlet of described condenser 2 is connected with the entrance of described overhead extraction tank 4 with the upper return mouth of described rectifying column 1, the tower bottom outlet of described rectifying column 1 is connected with the entrance of described reboiler 3 with the top entry of described tower reactor discharge tank 5, and the outlet of described reboiler 3 is connected with the lower return mouth of described rectifying column 1, the top exit of described tower reactor discharge tank 5 is connected with one end of pressure-equalizing line E, and the other end of described pressure-equalizing line E is connected with the lower openings of described rectifying column 1.
According to the utility model, charging A is sent in described rectifying column 1 and carries out rectifying, charging A can be such as containing a large amount of lower boiling chemical substance as the material of n-hexane, toluene etc., thus can obtain the products such as more pure n-hexane, toluene by rectifier unit.As shown in Figure 1, charging A joins in rectifying column by the feed plate (not shown) in the middle part of described rectifying column 1, and wherein components vaporize rising enters rectifying section, and part carries out stripping section for liquid phase is dirty.
According to the utility model, together with the part that charging A vaporizes and the vapour phase that stripping section comes with from the liquid phase generation counter current contacting of overhead reflux liquid and mass transfer, volatile part in liquid phase is to vapour phase transmission, difficult volatile fraction in vapour phase to liquid phase transmission, thus utilizes the boiling point of material different and reaches the object of separation.
Liquid-phase reflux is had in order to keep tower top, usually the partial material of tower top discharging is needed to reflux, be about to be refluxed as phegma by the condensate liquid part of described condenser 2, its reflux ratio can be determined according to concrete feed composition, and the utility model is not particularly limited this.Another part condensate liquid cooled through described condenser 2 then enters into described overhead extraction tank 4 as overhead extraction liquid B, collects as product.
According to the utility model, export from condenser 2 the liquid part flowed out and enter into rectifying column as phegma, a part is collected as Produced Liquid, unless illustrated especially, what those skilled in the art should understand is, can the liquid distributing device that can carry out reasonable separatory be set in the bottom of condenser 2 and carries out separatory, and liquid distributing device here can adopt this area routine for rectifying column tower top condensed fluid liquid distributing device, the utility model is to this and indefinite.Therefore, although what record in the utility model is that the outlet of described condenser 2 is connected with the entrance of described overhead extraction tank 4 with the upper return mouth of described rectifying column 1, those skilled in the art should be understood that, liquid distributing device can be set betwixt, the upper return mouth of described rectifying column 1 is connected by the outlet of liquid distributing device with condenser 2 with the entrance of described overhead extraction tank 4.And the situation that the top entry of the tower bottom outlet and described tower reactor discharge tank 5 that are equally applicable to described rectifying column 1 about the setting of liquid distributing device is connected with the entrance of described reboiler 3.
According to the utility model, the position of upper return mouth on described rectifying column 1 of the described rectifying column 1 be connected with the outlet of described condenser 2 is not particularly limited, can arrange according to the reflux inlet facilities of the rectifying column of routine, but mass transfer can be carried out with the stripping vapour phase in rectifying column better to make the phegma of condensing reflux, preferably, with the height of described rectifying column 1 for benchmark, within the upper return mouth of the described rectifying column 1 be connected with the outlet of described condenser 2 is positioned at described rectifying column 1 from top to bottom 1/5 section, more preferably described rectifying column 1 1/10-1/5 section is from top to bottom positioned at.In this article, the height of described rectifying column 1 refers to the vertical range of the point from the point of the bottommost of described rectifying column 1 to top, and refers within here from top to bottom 1/5 section from the top of described rectifying column 1 down to reaching in the region of 1/5 section of height of described rectifying column 1.
According to the utility model, tower reactor mainly concentrates the material having higher boiling composition, also there is a large amount of low boiling products simultaneously, when the liquid phase in tower reactor reaches operation limit level, such as with the height of described rectifying column 1 for benchmark, the liquid phase height of described tower reactor reaches the height of the height more than 1/10 of described rectifying column 1 and the lower openings lower than the described rectifying column 1 be connected with one end of described pressure-equalizing line E, the valve (not shown) opened at the bottom of tower is needed the liquid phase in tower reactor to be discharged, wherein a part of liquid phase enters tower reactor discharge tank 5 as tower reactor discharging C, another part is undertaken heating by reboiler 3 and enters into rectifying column 1 again thus provide the heat of vaporization for rectifying column.
According to the utility model, preferably, the top of described tower reactor discharge tank 5 is also connected with blow-down pipe D, this blow-down pipe D is provided with valve in the junction near itself and described tower reactor discharge tank 5, although the utility model does not limit especially to the valve number that this place is arranged, can be provided with at least one valve, but reduce costs aspect consideration for economizing on resources, a valve is more preferably set.
According to the utility model, preferably, described pressure-equalizing line E is provided with valve in the junction of the top exit near itself and described tower reactor discharge tank 5, although the utility model does not limit especially to the valve number that this place is arranged, can be provided with at least one valve, but aspect consideration is reduced costs for economizing on resources, a valve is more preferably set.Preferably, close, the junction of the lower openings of described rectifying column 1 is provided with valve, although the utility model does not limit especially to the valve number that this place is arranged, can be provided with at least one valve, but aspect consideration is reduced costs for economizing on resources, a valve is more preferably set.
According to the utility model, when opening the liquid phase that the valve at the bottom of described rectifying column 1 tower is discharged in tower reactor, open the valve on pressure-equalizing line E, and close the valve that described tower reactor discharge tank 5 is connected with blow-down pipe D, make a large amount of volatilization gas that the Partial Liquid Phase in tower reactor is proceeding to the generation of described tower reactor discharge tank 5 enter into described rectifying column 1 by pressure-equalizing line E, carry out mass transfer as vapour phase.The valve of described pressure-equalizing line E is closed when tower reactor blanking is complete.
According to the utility model, sharply promote due to rectifying column 1 tower reactor pressure may be caused when above-mentioned volatilization gas enters into described rectifying column 1 by pressure-equalizing line E, in order to keep rectifying column 1 tower reactor pressure more stable, preferably, the outside of described pressure-equalizing line E has can the condensing plant that flows through of Cooling Water, the cooling water inlet of this condensing plant is arranged near described pressure-equalizing line E and described rectifying column 1 junction, and the coolant outlet of this condensing plant is arranged near described pressure-equalizing line E and described tower reactor discharge tank 5 junction.Particularly for the rectifying of low boiling material, the pipeline of described pressure-equalizing line E arranges cooling device for the normal operation particular importance ensureing rectifying tower system.
According to the utility model, the length of described pressure-equalizing line E can adjust according to concrete feed composition and equipment arrangement, and the length of such as described pressure-equalizing line E can be 3-10m.Further, also there is no particular limitation to the tubing of described pressure-equalizing line E for the utility model, as long as can achieve the above object, such as, can be the conventional connecting line for rectifying device.
According to the utility model, owing to being connected with described pressure-equalizing line E between described tower reactor discharge tank 5 and described rectifying column 1, make not need to open described blow-down pipe D when described rectifying column 1 tower reactor discharging at every turn, and can when needing the liquid phase in described tower reactor discharge tank 5 to discharge when the liquid phase in described tower reactor discharge tank 5 reaches certain volume, open the valve of described blow-down pipe D, the gas in described tower reactor discharge tank 5 is discharged and enters emission-control equipment.Not only reduce exhaust emissions amount like this, and reduce the cost to emission process, the more important thing is, achieve making full use of material, improve the yield of product.
In the utility model, can be provided with at the top of tower reactor discharge tank 5 multiple can the connector of connecting line, therefore, can arrange at its top as the top entry of the tower reactor discharge tank 5 that is connected with the tower bottom outlet of rectifying column (1), the connector such as top exit, the connector that is connected with blow-down pipe D of tower reactor discharge tank 5 that is connected with pressure-equalizing line E.
More than describe preferred embodiment of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (10)
1. a rectifying device, this rectifying device comprises: rectifying column (1), condenser (2), overhead extraction tank (4), reboiler (3) and tower reactor discharge tank (5), it is characterized in that, the tower top outlet of described rectifying column (1) is connected with the entrance of described condenser (2), the outlet of described condenser (2) is connected with the entrance of the upper return mouth of described rectifying column (1) with described overhead extraction tank (4), the tower bottom outlet of described rectifying column (1) is connected with the entrance of described reboiler (3) with the top entry of described tower reactor discharge tank (5), and the outlet of described reboiler (3) is connected with the lower return mouth of described rectifying column (1), the top exit of described tower reactor discharge tank (5) is connected with one end of pressure-equalizing line (E), and the other end of described pressure-equalizing line (E) is connected with the lower openings of described rectifying column (1).
2. rectifying device according to claim 1, it is characterized in that, described pressure-equalizing line (E) is provided with valve in the junction of the top exit near itself and described tower reactor discharge tank (5), close, the junction of the lower openings of described rectifying column (1) is provided with valve.
3. rectifying device according to claim 1, it is characterized in that, the outside of described pressure-equalizing line (E) has can the condensing plant that flows through of Cooling Water, the cooling water inlet of this condensing plant is arranged near described pressure-equalizing line (E) and described rectifying column (1) junction, and the coolant outlet of this condensing plant is arranged near described pressure-equalizing line (E) and described tower reactor discharge tank (5) junction.
4. rectifying device according to claim 1, it is characterized in that, with the height of described rectifying column (1) for benchmark, the lower openings of the described rectifying column (1) be connected with described pressure-equalizing line (E) is positioned at described rectifying column (1) from the bottom up less than 1/5 section.
5. rectifying device according to claim 4, it is characterized in that, with the height of described rectifying column (1) for benchmark, the lower openings of the described rectifying column (1) be connected with described pressure-equalizing line (E) is positioned at described rectifying column (1) 1/10-1/5 section from the bottom up.
6. rectifying device according to claim 1, it is characterized in that, the top of described tower reactor discharge tank (5) is also connected with blow-down pipe (D), and this blow-down pipe (D) is provided with valve in the junction near itself and described tower reactor discharge tank (5).
7. rectifying device according to claim 1, it is characterized in that, with the height of described rectifying column (1) for benchmark, within the upper return mouth of the described rectifying column (1) be connected with the outlet of described condenser (2) is positioned at described rectifying column (1) from top to bottom 1/5 section.
8. rectifying device according to claim 7, it is characterized in that, with the height of described rectifying column (1) for benchmark, the upper return mouth of the described rectifying column (1) be connected with the outlet of described condenser (2) is positioned at described rectifying column (1) 1/10-1/5 section from top to bottom.
9. rectifying device according to claim 1, it is characterized in that, with the height of described rectifying column (1) for benchmark, the lower return mouth of the described rectifying column (1) be connected with the outlet of described reboiler (3) is positioned at described rectifying column (1) from the bottom up less than 1/3 section and is positioned at more than the lower openings of described rectifying column (1).
10. rectifying device according to claim 9, it is characterized in that, with the height of described rectifying column (1) for benchmark, the lower return mouth of the described rectifying column (1) be connected with the outlet of described reboiler (3) is positioned at described rectifying column (1) 1/4-1/3 section from the bottom up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420534817.2U CN204073480U (en) | 2014-09-17 | 2014-09-17 | A kind of rectifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420534817.2U CN204073480U (en) | 2014-09-17 | 2014-09-17 | A kind of rectifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204073480U true CN204073480U (en) | 2015-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420534817.2U Active CN204073480U (en) | 2014-09-17 | 2014-09-17 | A kind of rectifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204073480U (en) |
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2014
- 2014-09-17 CN CN201420534817.2U patent/CN204073480U/en active Active
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| GR01 | Patent grant |