CN212548661U

CN212548661U - Dealcoholization system capable of improving dealcoholization efficiency of plasticizer

Info

Publication number: CN212548661U
Application number: CN202020999117.6U
Authority: CN
Inventors: 秦国栋; 李义田; 王若清; 李芬芬; 李培花
Original assignee: Shandong Yuanli Technology Co ltd
Current assignee: Shandong Yuanli Technology Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-02-19
Anticipated expiration: 2030-06-04

Abstract

The utility model discloses a dealcoholization system capable of improving the dealcoholization efficiency of a plasticizer, which comprises a dealcoholization tower, a primary demister, a secondary demister, a condenser and an alcohol-water separator which are sequentially communicated, wherein the primary demister comprises a kettle body, a silk screen layer is arranged on the upper part of an inner cavity of the kettle body, the silk screen layer is arranged between an upper mounting plate and a lower mounting plate, and a vertically arranged double-head cylinder is also arranged between the upper mounting plate and the lower mounting plate; the top of the first-stage demister is communicated with the bottom of an inner cavity of the second-stage demister through a pipeline, and the internal structure of the second-stage demister is the same as that of the first-stage demister; the condenser comprises an inner shell, wherein a core pipe is sleeved inside the inner shell, and an outer shell is sleeved outside the inner shell; the utility model can avoid the mist generated by the dealcoholization tower entering the condenser to influence the condensation effect of the condenser as much as possible; the condensing efficiency of the condenser can be improved, so that the output speed and the product yield of the plasticizer product are ensured, and the product quality is stable.

Description

Dealcoholization system capable of improving dealcoholization efficiency of plasticizer

Technical Field

The utility model relates to a can improve dealcoholize system of plasticizer dealcoholize efficiency belongs to plasticizer production facility technical field.

Background

The plasticizer product is the most commonly used auxiliary agent for polyvinyl chloride, and can ensure that the product has good flexibility. The plasticizer has excellent plasticizing effect, can be used for nitrocellulose coating, and has good softening effect. The plasticizer products are widely applied in the fields of polyvinyl acetate, alkyd resin, nitrocellulose, ethyl cellulose, chloroprene rubber, nitrile rubber, engineering plastics and the like.

The production process of plasticizer product adopts domestic intermittent production mode, and its production process is characterized by that it adopts acid anhydride or acid and monobasic alcohol to make esterification reaction under the action of catalyst to produce ester, after the esterification is completed, a proper quantity of alkaline solution is added to neutralize the unreacted monoester and catalyst, and the waste water is separated by layers, and the washed product material is fed into dealcoholization still to dealcoholize, and under the condition of reduced pressure the excess unreacted monobasic alcohol can be removed. Finally, adding active carbon for decoloring, and filtering to obtain the final product.

At present, in the domestic production process, a kettle type dealcoholization device is mostly used for dealcoholization, alcohol substances in materials are removed in a high-vacuum mode, the dealcoholization method is generally intermittent dealcoholization, and the existing intermittent dealcoholization equipment mainly has the following defects: the dealcoholization in-process leads to producing a large amount of foams in the dealcoholization cauldron because of factors such as material reason, heating and vacuum, and the foam is smugglied secretly and is got into the condenser in gaseous, can influence the condensation effect of condenser, seriously influences output speed and the product yield of plasticizer product for product quality is extremely unstable.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a dealcoholization system capable of improving the dealcoholization efficiency of the plasticizer, which can prevent the mist generated by the dealcoholization tower from entering the condenser to influence the condensation effect of the condenser as far as possible; the condensing efficiency of the condenser can be improved, so that the output speed and the product yield of the plasticizer product are ensured, and the product quality is stable.

For solving the technical problem, the utility model discloses a following technical scheme:

a dealcoholization system capable of improving the dealcoholization efficiency of a plasticizer comprises a dealcoholization tower, a primary demister, a secondary demister, a condenser and an alcohol-water separator which are sequentially communicated; the primary demister comprises a kettle body, a wire mesh layer is mounted on the upper portion of an inner cavity of the kettle body and mounted between an upper mounting plate and a lower mounting plate, a plurality of vertically-arranged double-head cylinders are further mounted between the upper mounting plate and the lower mounting plate, and the double-head cylinders are circumferentially and uniformly distributed between the outer edges of the upper mounting plate and the lower mounting plate; the top of the primary demister is communicated with the bottom of an inner cavity of the secondary demister through a pipeline, and the internal structure of the secondary demister is the same as that of the primary demister; the condenser comprises an inner shell, wherein a core pipe is sleeved inside the inner shell, and an outer shell is sleeved outside the inner shell; be provided with between interior casing and the core pipe and press from both sides the chamber, press from both sides the intracavity and install helical blade, press from both sides a tip in chamber and install gaseous advancing pipe, gaseous advancing pipe is linked together with second grade demister inner chamber top, and condensation mellow wine exit tube is installed to another tip in clamp chamber.

According to an optimized scheme, a clamping cavity is arranged between an inner shell and an outer shell, the upper part of one end part of the clamping cavity is communicated with a condensed water inlet pipe, and the lower part of the other end part of the clamping cavity is communicated with a condensed water outlet pipe; one end of the core pipe is communicated with the condensed water inlet pipe, and the other end of the core pipe is communicated with the condensed water outlet pipe.

Furthermore, the end part of the piston rod at the upper part of the double-head cylinder is fixed with the upper mounting plate through a nut, and the end part of the piston rod at the lower part of the double-head cylinder is fixed with the lower mounting plate through a nut.

Furthermore, the bottoms of the secondary demister and the primary demister are respectively communicated with the inner cavity of the dealcoholization tower through return pipes.

Furthermore, the lower mounting plate is supported by a support ring arranged on the inner wall of the kettle body.

Further, the inner shell, the core pipe and the outer shell are coaxially arranged, and the end parts of the inner shell, the core pipe and the outer shell are respectively arranged in a sealing mode.

Further, the condensed alcohol outlet pipe is communicated with the alcohol-water separator.

The utility model adopts the above technical scheme after, compare with prior art, have following advantage:

the utility model provides a can improve dealcoholize system of plasticizer dealcoholize efficiency, the gas that deviates from through the dealcoholize tower when carrying out work gets into the one-level demister at first, the silk screen layer of one-level demister inside carries out the primary defoaming to the foam that smugglies secretly in the gas, remove the foam in-process and can adjust the entrapment efficiency of foam through double-end cylinder, the gas after the primary defoaming gets into the second grade demister and removes the foam, through twice remove the foam, carry out the entrapment to the foam that smugglies secretly in the gas, it is higher to remove the foam efficiency, can avoid the foam to get into the condenser and influence the condensation effect as far as possible; accomplish the gaseous double-layered chamber that gets into between interior casing and the core pipe after the foam twice, press from both sides the helical blade of intracavity and carry out the effect of water conservancy diversion to gas, gas carries out the comdenstion water cooperation between the comdenstion water of spiral flow in-process core pipe, interior casing and the shell body and condenses gas, improves the condenser and to gaseous condensation efficiency to ensure the output speed and the product yield of plasticizer product, make product quality stable.

The present invention will be described in detail with reference to the accompanying drawings and examples.

Drawings

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

FIG. 2 is a schematic diagram of the construction of a primary demister;

FIG. 3 is a schematic diagram of a condenser;

in the figure, 1-dealcoholization tower, 2-first-stage demister, 21-wire mesh layer, 22-upper mounting plate, 23-lower mounting plate, 24-double-head cylinder, 25-nut, 26-support ring, 3-second-stage demister, 4-condenser, 41-inner shell, 42-core pipe, 43-helical blade, 44-outer shell, 45-condensed water inlet pipe, 46-condensed water outlet pipe, 47-gas inlet pipe, 48-condensed alcohol outlet pipe, 5-alcohol-water separator and 6-return pipe.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 1, fig. 2 and fig. 3 together, the utility model provides a dealcoholize system that can improve plasticizer dealcoholize efficiency, including dealcoholize tower 1, one-level demister 2, second grade demister 3, condenser 4 and the mellow wine water separator 5 that communicate the setting in proper order.

The top of the dealcoholization tower 1 is communicated with the bottom of an inner cavity of the primary demister 2 through a pipeline, and the primary demister 2 carries out primary defoaming on the entrainment carried in the dealcoholization gas in the dealcoholization tower 1; the primary demister 2 comprises a kettle body, a wire mesh layer 21 is arranged on the upper portion of an inner cavity of the kettle body, the wire mesh layer 21 is used for intercepting and adsorbing mist, the mist can be attached to the surface of the filaments and is gathered into liquid drops, and finally the liquid drops are separated from the filaments and fall; the screen layer 21 is arranged between the upper mounting plate 22 and the lower mounting plate 23, the vertically arranged double-head cylinders 24 are further arranged between the upper mounting plate 22 and the lower mounting plate 23, the number of the double-head cylinders 24 is multiple, the double-head cylinders 24 are circumferentially and uniformly distributed between the outer edges of the upper mounting plate 22 and the lower mounting plate 23, the end part of a piston rod at the upper part of each double-head cylinder 24 is fixed with the upper mounting plate 22 through a nut 25, the end part of a piston rod at the lower part of each double-head cylinder 24 is fixed with the lower mounting plate 23 through a nut 25, the double-head cylinders 24 are used for adjusting the height between the upper mounting plate 22 and the lower mounting plate 23 so as to adjust the size of a gap in the screen layer 21, when the double-head cylinders 24 retract, the gap in the screen layer 21 becomes small, when the double; the lower mounting plate 23 is supported by a support ring 26 arranged on the inner wall of the kettle body.

The top of the primary demister 2 is communicated with the bottom of an inner cavity of the secondary demister 3 through a pipeline, the internal structure of the secondary demister 3 is the same as that of the primary demister 2, and the secondary demister 3 carries out secondary defoaming on the mist entrained in the de-aerated gas of the dealcoholization tower 1, so that the capturing of the mist is further improved; the bottoms of the second-stage demister 3 and the first-stage demister 2 are respectively communicated with the inner cavity of the dealcoholization tower 1 through a return pipe 6, and the return pipe 6 returns liquid drops formed by gathering the spray.

The condenser 4 is used for condensing and recycling the defoamed gas, the condenser 4 comprises an inner shell 41, a core pipe 42 is sleeved in the inner shell 41, an outer shell 44 is sleeved outside the inner shell 41, the core pipe 42 and the outer shell 44 are coaxially arranged, and the end parts of the inner shell 41, the core pipe 42 and the outer shell 44 are respectively arranged in a sealing manner; a clamping cavity is arranged between the inner shell 41 and the core tube 42, a spiral blade 43 is arranged in the clamping cavity, the spiral blade 43 plays a role in gas diversion, a monohydric alcohol gas inlet pipe 47 is arranged at one end part of the clamping cavity, the gas inlet pipe 47 is communicated with the top of the inner cavity of the secondary demister 3, and a condensed alcohol outlet pipe 48 is arranged at the other end part of the clamping cavity; a clamping cavity is arranged between the inner shell 41 and the outer shell 44, the upper part of one end part of the clamping cavity is communicated with a condensed water inlet pipe 45, and the lower part of the other end part of the clamping cavity is communicated with a condensed water outlet pipe 46; one end of the core tube 42 is communicated with a condensed water inlet tube 45, and the other end of the core tube 42 is communicated with a condensed water outlet tube 46; the condensed water in the core tube 42 and the condensed water between the inner shell 41 and the outer shell 44 are matched to condense the gas between the inner shell 41 and the core tube 42, so that the condensing efficiency of the gas is improved; the condensed alcohol outlet pipe 48 is communicated with the alcohol-water separator 5, and the alcohol-water separator 5 separates alcohol from water.

The utility model discloses a concrete theory of operation:

the gas desorbed from the dealcoholization tower 1 firstly enters the primary demister 2, a wire mesh layer 21 in the primary demister 2 carries out primary defoaming on the mist entrained in the gas, and the gap in the wire mesh layer 21 can be adjusted by a double-head cylinder 24 in the defoaming process, so that the mist trapping efficiency can be adjusted; the gas after primary defoaming enters a secondary demister 3 for defoaming, and the entrainment entrained in the gas is trapped through twice defoaming, so that the defoaming efficiency is high, and the phenomenon that the condensation effect is influenced because the entrainment enters a condenser 4 can be avoided as much as possible; the gas after twice defoaming enters the clamping cavity between the inner shell 41 and the core tube 42, the helical blades 43 in the clamping cavity guide the gas, and the condensed water in the core tube 42 and the condensed water between the inner shell 41 and the outer shell 44 are matched to condense the gas in the process of helical flowing of the gas, so that the condensing efficiency of the condenser 4 on the gas is improved, the output speed and the product yield of a plasticizer product are ensured, and the product quality is more stable; the condensed gas enters an alcohol-water separator 5 to complete the separation of alcohol and water.

The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.

Claims

1. A dealcoholization system capable of improving dealcoholization efficiency of a plasticizer is characterized in that: comprises a dealcoholization tower (1), a primary demister (2), a secondary demister (3), a condenser (4) and an alcohol-water separator (5) which are sequentially communicated; the primary demister (2) comprises a kettle body, a wire mesh layer (21) is installed on the upper portion of an inner cavity of the kettle body, the wire mesh layer (21) is installed between an upper installation plate (22) and a lower installation plate (23), vertically arranged double-head air cylinders (24) are further installed between the upper installation plate (22) and the lower installation plate (23), the number of the double-head air cylinders (24) is multiple, and the double-head air cylinders (24) are circumferentially and uniformly distributed between the outer edges of the upper installation plate (22) and the lower installation plate (23); the top of the primary demister (2) is communicated with the bottom of an inner cavity of the secondary demister (3) through a pipeline, and the internal structure of the secondary demister (3) is the same as that of the primary demister (2); the condenser (4) comprises an inner shell (41), a core pipe (42) is sleeved inside the inner shell (41), and an outer shell (44) is sleeved outside the inner shell (41); be provided with between interior casing (41) and core pipe (42) and press from both sides the chamber, press from both sides the intracavity and install helical blade (43), press from both sides a tip in chamber and install gaseous advancing pipe (47), gaseous advancing pipe (47) and second grade demister (3) inner chamber top are linked together, press from both sides another tip in chamber and install condensation mellow wine exit tube (48).

2. The dealcoholization system for improving the dealcoholization efficiency of plasticizers according to claim 1, wherein: a clamping cavity is arranged between the inner shell (41) and the outer shell (44), the upper part of one end part of the clamping cavity is communicated with a condensed water inlet pipe (45), and the lower part of the other end part of the clamping cavity is communicated with a condensed water outlet pipe (46); one end part of the core pipe (42) is communicated with a condensed water inlet pipe (45), and the other end part of the core pipe (42) is communicated with a condensed water outlet pipe (46).

3. The dealcoholization system for improving the dealcoholization efficiency of plasticizers according to claim 1, wherein: the end part of a piston rod on the upper part of the double-head cylinder (24) is fixed with the upper mounting plate (22) through a nut (25), and the end part of the piston rod on the lower part of the double-head cylinder (24) is fixed with the lower mounting plate (23) through a nut (25).

4. The dealcoholization system for improving the dealcoholization efficiency of plasticizers according to claim 1, wherein: the bottoms of the secondary demister (3) and the primary demister (2) are respectively communicated with the inner cavity of the dealcoholization tower (1) through a return pipe (6).

5. The dealcoholization system for improving the dealcoholization efficiency of plasticizers according to claim 1, wherein: the lower mounting plate (23) is supported by a support ring (26) arranged on the inner wall of the kettle body.

6. The dealcoholization system for improving the dealcoholization efficiency of plasticizers according to claim 1, wherein: the inner shell (41), the core pipe (42) and the outer shell (44) are coaxially arranged, and the ends of the inner shell (41), the core pipe (42) and the outer shell (44) are respectively arranged in a sealing mode.

7. The dealcoholization system for improving the dealcoholization efficiency of plasticizers according to claim 1, wherein: the condensed alcohol outlet pipe (48) is communicated with the alcohol-water separator (5).