CN218686411U

CN218686411U - Condensing equipment is used in propyl acetate processing

Info

Publication number: CN218686411U
Application number: CN202223001923.8U
Authority: CN
Inventors: 潘书铭; 邓宇雄; 佟刚; 赵楚榜
Original assignee: TAIXING JINJIANG CHEMICAL INDUSTRY CO LTD
Current assignee: TAIXING JINJIANG CHEMICAL INDUSTRY CO LTD
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-03-24
Anticipated expiration: 2032-11-11

Abstract

The utility model discloses a condensing equipment is used in processing of n-propyl acetate, including the esterification tower, the esterification tower upper end is through first pipe connection in condenser, and thick cistern is connected to the condenser other end, and rectifying column is connected to thick cistern, and the esterification tower lower extreme passes through the pre-heater to be connected in the feed liquor pipeline, and the feed liquor pipeline passes first pipeline forms leading cooling structure. The utility model has the advantages that the liquid inlet pipeline passes through the first pipeline, so that the heat exchange between the liquid inlet and the gas outlet is realized, the energy loss is reduced, and the power consumption of the preheater and the condenser is also reduced; simultaneously, the liquid inlet pipe structure and the first pipeline connecting structure are designed, so that the installation is simple and convenient, and the sealing performance is good.

Description

Condensing equipment is used in propyl acetate processing

Technical Field

The utility model relates to an n-propyl acetate production and processing equipment technical field, concretely relates to condensing equipment is used in processing of n-propyl acetate.

Background

N-propyl acetate is a common acetate of lower aliphatic alcohol, is often used as a good solvent for coatings, printing ink, nitro-spray paint, varnish and various resins, and is also applied to the flavor and fragrance industry.

The existing preparation method of n-propyl acetate generally comprises the steps of mixing acetic acid and propanol in a catalyst for catalysis and heating, obtaining crude n-propyl acetate, and rectifying the crude n-propyl acetate to obtain a finished product of the n-propyl acetate. The specific preparation steps can refer to the Chinese utility model patent with the patent number of 201520462517.2. The n-propyl acetate production system comprises an esterification tower, wherein the lower end of the esterification tower is heated by acetic acid and propanol through a preheater and then enters the esterification tower, gas generated at the upper end of the esterification tower passes through a condenser to obtain crude n-propyl acetate, the preheating and the condensation are realized through an independent preheater and an independent condenser, and the problem of energy efficiency utilization waste exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a condensing equipment realizes that acetic acid, propanol and esterification tower generate gaseous further heat transfer earlier to the not enough of existence among the above-mentioned background art, and then improves the efficiency and utilizes the effect.

In order to achieve the above object, the utility model relates to a condensing equipment is used in processing of n-propyl acetate has adopted following technical scheme:

the utility model provides a condensing equipment is used in propyl acetate processing, includes the esterification tower, and the esterification tower upper end is through first pipe connection in condenser, and the thick cistern is connected to the condenser other end, and rectifying column is connected to the thick cistern, and the esterification tower lower extreme passes through the pre-heater and connects in the inlet liquid pipeline, and the inlet liquid pipeline passes first pipeline forms and puts cooling structure earlier.

The utility model relates to a condensing equipment's for processing of n-propyl acetate further improvement part lies in, and first pipeline is the L type, including vertical section and horizontal segment, vertical section is connected in the condenser, the inlet liquid pipeline also is the L type, passes vertical section.

The utility model relates to a condensing equipment's for processing of n-propyl acetate further improvement part lies in, and the breach that supplies the feed liquor pipeline to pass is seted up to the up end and the side of vertical section, the feed liquor pipeline includes last feed liquor pipe, lower feed liquor pipe and arranges the heat transfer feed liquor pipe in first pipeline in, and heat transfer feed liquor pipe is the L type, and the both ends of heat transfer feed liquor pipe all are provided with the screw thread end, and the screw thread end spiro union has the connector, and the connector is used for connecting feed liquor pipe or lower feed liquor pipe, the connector outer wall still is provided with the annular limiting plate that the cross-section is the T type, and one side that the vertical portion of annular limiting plate is close to the connector is provided with the screw thread, the ring channel of the vertical portion of spiro union annular limiting plate has also been seted up to the up end and the side of vertical section.

The utility model relates to a condensing equipment's for processing of n-propyl acetate further improvement part lies in, is provided with sealed the pad between the breach of seting up on connector outer wall and the vertical section.

The utility model relates to a condensing equipment's is used in processing of n-propyl acetate further improves the part and lies in, and the feed liquor pipeline is provided with two sets ofly, is used for the feed liquor of acetic acid and propanol respectively.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model has the advantages that the liquid inlet pipeline passes through the first pipeline, so that the heat exchange between the liquid inlet and the gas outlet is realized, the energy loss is reduced, and the power consumption of the preheater and the condenser is also reduced; simultaneously, the liquid inlet pipe structure and the first pipeline connecting structure are designed, so that the installation is simple and convenient, and the sealing performance is good.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is a schematic structural view of the connection between the first pipeline and the liquid inlet pipeline of the present invention;

in the figure: 1 esterification tower, 2 first pipelines, 3 condensers, 4 thick cistern, 5 inlet liquid pipelines, 6 vertical sections, 7 heat transfer feed liquor pipes, 8 connectors, 9 annular limiting plates, 10 sealed pads, 11 preheaters.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 and 2, a condensing unit is used in processing of n-propyl acetate, including esterification column 1, esterification column upper end is connected in condenser 3 through first pipeline 2, and the thick cistern 4 is connected to the condenser other end, and the rectifying column is connected in the thick cistern, and esterification column lower extreme passes through pre-heater 11 to be connected in inlet conduit 5, and above-mentioned structure is current structure, and is further, and inlet conduit passes first pipeline and forms leading cooling structure. The liquid inlet pipeline passes through the first pipeline, so that heat transfer can be realized, and the purpose of reducing energy loss is achieved. Specifically, first pipeline is the L type, including vertical section 6 and horizontal segment, and vertical section is connected in the condenser, and the inlet liquid pipeline also is the L type, passes vertical section. The crude ester formed in the heat exchange stage is conveniently passed through a condenser and then to a crude ester tank.

Further, the breach that supplies the feed liquor pipeline to pass is seted up to the up end and the side of vertical section, and the feed liquor pipeline includes last feed liquor pipe, lower feed liquor pipe and arranges heat transfer feed liquor pipe 7 in first pipeline in, and last feed liquor pipe and lower feed liquor pipe are conventional transmission pipeline, and heat transfer feed liquor pipe has the better material of thermal conductivity to make. The heat exchange liquid inlet pipe is L-shaped and can be formed by splicing multiple sections. Both ends of heat transfer feed liquor pipe all are provided with the screw thread end, and the screw thread end spiro union has connector 8, and the connector is used for connecting the upper feed liquor pipe or feed liquor pipe down, and the connector outer wall still is provided with the annular limiting plate 9 that the cross-section is the T type, and one side that the vertical portion of annular limiting plate is close to the connector is provided with the screw thread, and the ring channel of the vertical portion of spiro union annular limiting plate has also been seted up to the up end and the side of vertical section. The length of the thread of the annular limiting plate is smaller than that of the thread at the end of the thread.

Further, a sealing gasket 10 is arranged between the outer wall of the connector and a gap formed in the vertical section.

Two groups of liquid inlet pipelines are arranged and are respectively used for the liquid inlet of acetic acid and propanol. Two groups of corresponding connectors are also arranged.

The utility model discloses a theory of operation does: acetic acid and propanol are respectively transmitted to the preheater and the esterification tower from entering the liquid inlet pipeline, high-temperature gas generated by the esterification tower enters the first pipeline, liquid inlet and gas outlet exchange heat at the heat exchange liquid inlet pipe, energy loss is effectively reduced, and power consumption of a subsequent condenser and the preheater is also reduced.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a condensing equipment is used in processing of n-propyl acetate which characterized in that: including the esterification tower, esterification tower upper end is through first pipe connection in condenser, and the thick cistern is connected to the condenser other end, and rectifying column is connected to thick cistern, and the esterification tower lower extreme passes through the pre-heater to be connected in the inlet liquid pipeline, the inlet liquid pipeline passes first pipeline forms leading cooling structure.

2. The condensing unit for n-propyl acetate processing according to claim 1, wherein: first pipeline is the L type, including vertical section and horizontal segment, vertical section is connected in the condenser, the liquid inlet pipeline also is the L type, passes vertical section.

3. The condensing unit for n-propyl acetate processing according to claim 2, wherein: the breach that supplies feed liquor pipeline to pass is seted up to the up end and the side of vertical section, feed liquor pipeline includes last feed liquor pipe, lower feed liquor pipe and arranges the heat transfer feed liquor pipe in the first pipeline in, and heat transfer feed liquor pipe is the L type, and the both ends of heat transfer feed liquor pipe all are provided with the screw thread end, and the screw thread end spiro union has the connector, and the connector is used for connecting the feed liquor pipe or feed liquor pipe down, the connector outer wall still is provided with the annular limiting plate that the cross-section is the T type, and one side that the vertical portion of annular limiting plate is close to the connector is provided with the screw thread, the ring channel of the vertical portion of spiro union annular limiting plate has also been seted up to the up end and the side of vertical section.

4. The condensing unit for n-propyl acetate processing according to claim 3, wherein: and a sealing gasket is arranged between the outer wall of the connector and the notch formed in the vertical section.

5. The condensing unit for n-propyl acetate processing according to claim 3, wherein: two sets of liquid inlet pipelines are arranged and are respectively used for feeding liquid of acetic acid and propanol.