CN217854591U - P-tert octyl phenol falling film evaporator - Google Patents

Abstract

The utility model provides a to special octyl phenol falling film evaporation ware belongs to falling film evaporation ware technical field. The method solves the problem of improving the purification precision of the feed liquid on the basis of ensuring the unchanged volume of the traditional falling film evaporator. This falling film evaporation ware includes the casing, the casing has evaporation chamber and separation chamber, the top in the evaporation chamber is fixed with the overflow dish, the overflow launder has on the overflow dish, the feed end has on the casing, be connected with a plurality of roots on the overflow dish and be the evaporating pipe that is hollow form, be equipped with steam generator on the casing, the bottom in separation chamber has been seted up out the liquid hole and has been connected with the person in charge between liquid hole and the feed end, be equipped with the branch pipe that communicates with the person in charge on the person in charge, be connected with the circulating pump on the branch pipe, it is equipped with the valve that can control the person in charge to open and close to lie in between branch pipe and the feed end on the person in charge. The design can repeatedly circulate and distill the feed liquid for many times, can purify the feed liquid to a great extent, and still only one evaporation cavity can not enlarge the volume of the falling film evaporator.

Description

P-tert octyl phenol falling film evaporator

Technical Field

The utility model relates to a belong to falling film evaporator technical field, relate to an evaporimeter, in particular to special octyl phenol falling film evaporimeter.

Background

The falling film evaporation is that the feed liquid is added from the heating chamber of the falling film evaporator to the upper pipe box, is uniformly distributed into each heat exchange pipe through the liquid distribution and film forming device, and flows from top to bottom in a uniform film shape under the action of gravity, vacuum induction and air flow. In the flowing process, the shell-pass heating medium is heated and vaporized, the generated steam and the liquid phase enter a separation chamber of an evaporator together, the steam and the liquid are fully separated, the steam enters a condenser for condensation (single-effect operation) or enters a next-effect evaporator as the heating medium, so that the multi-effect operation is realized, and the liquid phase is discharged from the separation chamber. The conventional falling film evaporator tends to become large in volume if it has a plurality of heating chambers, and the purification accuracy of the feed liquid is not well controlled if only a single heating chamber is provided in order to reduce the volume.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a to special octyl phenol falling film evaporation ware. The technical problem of improving the purification precision of the feed liquid on the basis of ensuring the unchanged volume of the traditional falling film evaporator is solved.

In order to realize the purpose, the utility model adopts the technical scheme that:

the p-tert octyl phenol falling-film evaporator comprises a shell, wherein the shell is provided with an evaporation cavity and a separation cavity, an overflow disc is fixed at the top in the evaporation cavity, an overflow groove is formed in the outer edge of the overflow disc along the circumferential direction of the overflow disc, a feeding end is arranged on the shell, an outlet of the feeding end is positioned on the wall of an inner cavity of the shell near the bottom of the overflow groove, a plurality of hollow evaporation tubes are connected onto the overflow disc, the lower ends of the evaporation tubes extend into the separation cavity, a steam generator capable of releasing steam into the evaporation cavity is arranged on the shell, the p-tert octyl phenol falling-film evaporator is characterized in that a gas outlet for communicating the separation cavity with the outside is arranged on the top wall of the separation cavity, a main pipe is arranged at the bottom of the separation cavity, a branch pipe communicated with a main pipe is arranged on the main pipe, a circulating pump is connected onto the branch pipe, and a valve capable of controlling the main pipe to be opened and closed is arranged between the branch pipe and the feeding end on the main pipe.

The falling-film evaporator is characterized in that an evaporation cavity and a separation cavity are respectively arranged in the falling-film evaporator up and down, high-temperature steam can be introduced into the evaporation cavity through a steam generator to heat an evaporation tube arranged in the evaporation cavity, an overflow pan is arranged above the evaporation tube, when a feed liquid is poured into an overflow trough on the overflow pan, the feed liquid gradually enters the overflow trough along with the feed liquid, the liquid level of the feed liquid finally does not exceed the upper end surface of the overflow pan, the inlet of the evaporation tube is positioned on the upper end surface of the overflow pan, the feed liquid can enter the evaporation tube after the feed liquid does not exceed the upper end surface of the overflow pan and then flows downwards along the inner wall of the evaporation tube, the feed liquid in the evaporation tube is evaporated by heating the evaporation tube by steam, the evaporated gas and the feed liquid can enter the separation cavity together, the gas can be discharged from a gas outlet hole, the rest purified feed liquid can be remained in the separation cavity, a main tube is connected between the bottom of the separation cavity and the feeding end of the evaporation cavity, the once purified feed liquid can be guided back to the feed end to the overflow pan to be re-fed to be re-distilled again, and the secondary distillation can be performed according to the mode, the repeated circulation of the feed liquid can be performed, and the distillation of the evaporation tube, and the evaporation tube can be performed to the great extent that only one evaporation tube, and only one evaporation tube, so that the evaporation tube can be prevented from the evaporation cavity, and the evaporation tube, and the size of the evaporation tube can be increased.

And the main pipe of this design still is equipped with the branch pipe on, is connected with the circulating pump on the branch pipe, can directly close the valve on the main line and make liquid outlet hole and feed end disconnection after we feel that the purification reaches the requirement, opens at this moment the circulating pump and can directly take out the feed liquid of separation intracavity, improvement feed liquid collection efficiency by a wide margin.

In the p-tert octyl phenol falling-film evaporator, a partition board for separating the evaporation cavity from the separation cavity is arranged between the evaporation cavity and the separation cavity, and all the evaporation tubes penetrate through the partition board and extend into the separation cavity.

The evaporation cavity and the separation cavity of this design are two independent cavities, and the lower extreme of evaporating pipe passes the baffle and stretches into the separation intracavity promptly the lower extreme export of evaporating pipe not with the evaporation cavity intercommunication, and the direct gas that can appear separating and feed liquid directly discharge into the separation intracavity, design like this and guaranteed that whole falling film evaporator's volume is unchangeable on the basis improves the purification precision.

In foretell a to special octyl phenol falling film evaporator, the bottom of baffle is equipped with and surrounds the guide plate that is the toper funnel-shaped including the lower extreme of all evaporating pipes, the outage has been seted up to the lowest of guide plate.

The funnel-shaped guide plate can well gather the feed liquid on each evaporation tube together and then uniformly discharge the feed liquid into the separation cavity, so that the feed liquid can be obviously observed.

In the p-tert octyl phenol falling-film evaporator, the liquid inlet end is connected with a three-way joint, and the main pipe is in butt joint with one input end of the three-way joint.

In the p-tert octyl phenol falling-film evaporator, the steam generator is provided with a steam outlet end and a steam return end, and the steam outlet end and the steam return end are both communicated with the evaporation cavity through pipelines.

The utility model has the advantages that:

1. the design of the falling-film evaporator is characterized in that the evaporated gas and the feed liquid can enter the separation cavity together, the gas floats on the upper part and can be discharged from the gas outlet, and the rest purified feed liquid can be left in the separation cavity;

2. still be equipped with the branch pipe on the person in charge of this design, be connected with the circulating pump on the branch pipe, can directly close the valve on the main pipeline after we feel that the purification reaches the requirement and make out liquid hole and feed end disconnection, open the circulating pump at this moment and can directly take out the feed liquid that separates the intracavity, the collection efficiency of improvement feed liquid by a wide margin.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure, 1, a housing; 11. an evaporation chamber; 12. a separation chamber; 13. a feeding end; 14. an air outlet; 15. a liquid outlet hole; 2. an overflow pan; 3. an evaporation tube; 4. a steam generator; 41. a steam outlet end; 42. a steam return end; 5. a main tube; 51. a branch pipe; 6. a circulation pump; 7. a valve; 8. a partition plate; 9. a baffle; 91. a liquid discharge hole; 10. a three-way joint.

Detailed Description

As shown in fig. 1, a p-tert-octylphenol falling-film evaporator includes a housing 1, the housing 1 has an evaporation cavity 11 and a separation cavity 12, an overflow pan 2 is fixed on the top of the evaporation cavity 11, an overflow pan 21 is provided along the circumferential direction of the overflow pan 2, a feed end 13 is provided on the housing 1, an outlet of the feed end 13 is located on the inner cavity wall of the housing 1 near the bottom of the overflow pan 21, the overflow pan 2 is connected with a plurality of hollow evaporation tubes 3, the lower ends of the evaporation tubes 3 extend into the separation cavity 12, the housing 1 is provided with a steam generator 4 capable of releasing steam to the evaporation cavity 11, the top wall of the separation cavity 12 is provided with a gas outlet 14 communicating the separation cavity 12 with the outside, the bottom of the separation cavity 12 is provided with a liquid outlet 15, a main pipe 5 is connected between the liquid outlet 15 and the feed end 13, the main pipe 5 is provided with a branch pipe 51 communicated with the main pipe 5, the branch pipe 51 is connected with a circulating pump 6, and a valve 7 capable of controlling the main pipe 5 is provided between the branch pipe 51 and the feed end 13 on the main pipe 5. The falling-film evaporator is characterized in that high-temperature steam can be introduced into an evaporation cavity 11 and an evaporation cavity 11 of a separation cavity 12 respectively arranged at the upper part and the lower part of the falling-film evaporator through a steam generator 4 to heat an evaporation tube 3 arranged in the evaporation cavity 11, an overflow pan 2 is arranged above the evaporation tube 3, when the feed liquid is poured into an overflow pan 21 on the overflow pan 2, the feed liquid gradually enters the overflow pan 21 along with the feed liquid and finally flows over the upper end surface of the overflow pan 2, the inlet of the evaporation tube 3 is positioned on the upper end surface of the overflow pan 2, when the feed liquid passes over the upper end surface of the overflow pan 2, the feed liquid enters the evaporation tube 3 and flows downwards along the inner wall of the evaporation tube 3, at this time, the steam heats the evaporation tube 3 to evaporate the feed liquid therein, the evaporated gas and the gas can enter the separation cavity 12 together, the gas floats upwards and can be discharged from a gas outlet 14, the remaining purified feed liquid can remain in the separation cavity 12, a main tube 5 is connected between the bottom of the separation cavity 12 and the feed end 13 of the separation cavity 12, the feed liquid can be reintroduced into the evaporation cavity of the distillation pan 2 after once purification, and the evaporation tube 11 can repeatedly purify the feed liquid according to the secondary evaporation mode, and the secondary evaporation tube 11 can not increase the volume of the feed liquid, and the evaporation tube 11 can be repeatedly. And the main pipe 5 of the design is also provided with a branch pipe 51, the branch pipe 51 is connected with a circulating pump 6, when people feel that the purification meets the requirement, the valve 7 on the main pipe 5 way can be directly closed to disconnect the liquid outlet 15 and the feeding end 13, and at the moment, the circulating pump 6 is opened to directly pump out the liquid in the separation cavity 12, so that the liquid collecting efficiency can be greatly improved.

A partition plate 8 for separating the evaporation cavity 11 and the separation cavity 12 is arranged between the evaporation cavity 11 and the separation cavity 12, and all the evaporation tubes 3 penetrate through the partition plate 8 and extend into the separation cavity 12. The evaporation cavity 11 and the separation cavity 12 of the design are two independent cavities, the lower end of the evaporation tube 3 penetrates through the partition plate 8 and extends into the separation cavity 12, namely the lower end outlet of the evaporation tube 3 is not communicated with the evaporation cavity 11, gas and feed liquid generated by separation can be directly discharged into the separation cavity 12, and the design ensures that the purification precision is improved on the basis of unchanged volume of the whole falling film evaporator. Baffle 8's bottom is equipped with the guide plate 9 that is the toper funnel-shaped including can surround the lower extreme of all evaporating pipes 3, and outage 91 has been seted up to the lowest of guide plate 9. Funnel-shaped guide plate 9 can play fine and assemble the feed liquid on each evaporating pipe 3 together and then discharge in separating chamber 12 in unison, prevents that the feed liquid drippage on many evaporating pipes 3 from spattering to influence the gas that evaporates out and discharge from venthole 14 on the whole separating chamber 12 wall. The feed end 13 is connected with a three-way joint 10, and the main pipe 5 is butted with one input end of the three-way joint 10. The steam generator 4 has a steam outlet 41 and a steam return 42, and both the steam outlet 41 and the steam return 42 are communicated with the evaporation cavity 11 through a pipeline.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are directions or positional relationships indicated based on the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and therefore, cannot be understood as a limitation of the present invention, and the fundamental principles, main features and advantages of the present invention are shown and described above, and should be understood by those skilled in the art.

Claims (5)

1. A p-tert octyl phenol falling-film evaporator comprises a shell (1), wherein the shell (1) is provided with an evaporation cavity (11) and a separation cavity (12), an overflow disc (2) is fixed at the top in the evaporation cavity (11), an overflow groove (21) is formed in the outer edge of the overflow disc (2) along the circumferential direction of the overflow disc, a feeding end (13) is arranged on the shell (1), the outlet of the feeding end (13) is positioned on the inner cavity wall of the shell (1) close to the bottom of the overflow groove (21), the overflow disc (2) is connected with a plurality of hollow evaporation tubes (3), the lower ends of the evaporation tubes (3) extend into the separation cavity (12), be equipped with on casing (1) and can be to steam generator (4) of evaporation chamber (11) release steam, its characterized in that, be equipped with venthole (14) with separation chamber (12) and external intercommunication on the roof of separation chamber (12), the bottom of separation chamber (12) has been seted up out liquid hole (15) and has been connected with between liquid hole (15) and feed end (13) and be responsible for (5), be equipped with branch pipe (51) with be responsible for (5) intercommunication on being responsible for (5), be connected with circulating pump (6) on branch pipe (51), be equipped with between branch pipe (51) and feed end (13) on being responsible for (5) and control the valve that is responsible for (5) and opens and close (7).

2. A p-tert octyl phenol falling film evaporator as claimed in claim 1, characterised in that a partition (8) separating the evaporation chamber (11) from the separation chamber (12) is provided, all the evaporation tubes (3) extending through the partition (8) into the separation chamber (12).

3. The p-tert octyl phenol falling film evaporator according to claim 2, characterized in that the bottom of the partition plate (8) is provided with a conical funnel-shaped guide plate (9) which can surround the lower ends of all the evaporation tubes (3), and the lowest part of the guide plate (9) is provided with a liquid discharge hole (91).

4. A p-tert octyl phenol falling film evaporator according to claim 3, characterised in that a three-way connection (10) is connected to the feed end (13), the main tube (5) being in butt joint with one of the inputs of the three-way connection (10).

5. A p-tert octylphenol falling-film evaporator according to any one of claims 1 to 4, characterised in that the steam generator (4) has a steam outlet (41) and a steam return (42), both the steam outlet (41) and the steam return (42) communicating with the evaporation chamber (11) via piping.

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