CN217391996U

CN217391996U - Device for efficiently absorbing pentamethylene diamine in steam

Info

Publication number: CN217391996U
Application number: CN202221026837.XU
Authority: CN
Inventors: 季连奇
Original assignee: Shanghai Yiweipo Energy Conservation And Environmental Protection Technology Co ltd
Current assignee: Shanghai Yiweipo Energy Conservation And Environmental Protection Technology Co ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-09-09
Anticipated expiration: 2032-04-28

Abstract

The utility model discloses a device of pentamethylene diamine in high-efficient absorption steam, include: the tower body is provided with an accommodating cavity, the top of the tower body is provided with an absorbent feeding hole and a steam outlet, and the bottom of the tower body is provided with a steam inlet and an absorbent discharging hole; the tower plates are arranged in the accommodating cavity at intervals in the vertical direction, each tower plate comprises a supporting plate fixed with the accommodating cavity and a plurality of pipe assemblies arranged on the supporting plate at intervals, and sieve holes for circulation of steam and the absorbent are formed between every two adjacent pipe assemblies. Compared with a spray tower, the sieve plate tower increases the contact surface area of the pentanediamine waste gas and water, and greatly improves the mass transfer efficiency.

Description

Device for efficiently absorbing pentamethylene diamine in steam

Technical Field

The utility model relates to a resource and environmental technology field especially relate to a device of pentamethylene diamine in high-efficient absorption steam.

Background

In the production process of the pentanediamine, a large amount of waste gas containing the pentanediamine is required to be discharged, the pentanediamine is colorless and viscous fuming liquid with special odor, is easy to dissolve in water, is mainly used for preparing high polymers, organic synthesis intermediates and epoxy resin curing agents in industry, and is also used for biological research. Pentanediamine, also known as cadaverine, is corrosive and toxic and can be inhaled, ingested or transdermally absorbed by the human body. If the waste gas containing the pentanediamine is not efficiently treated, the environment is seriously polluted, the human health is harmed, and the economic benefit of an enterprise is reduced. Therefore, a pentanediamine production plant is necessary to reduce the concentration of pentanediamine in wastewater.

SUMMERY OF THE UTILITY MODEL

For solving the problem mentioned among the above-mentioned prior art, the utility model provides a device of pentamethylene diamine in high-efficient absorption steam, the device working costs is low, and energy utilization is high, and has greatly improved pentamethylene diamine's absorption efficiency.

The technical scheme adopted is as follows: an apparatus for efficiently absorbing pentamethylene diamine in steam, which comprises:

the tower body is provided with an accommodating cavity, the top of the tower body is provided with an absorbent feeding hole and a steam outlet, and the bottom of the tower body is provided with a steam inlet and an absorbent discharging hole;

the tower plates are arranged in the accommodating cavity at intervals in the vertical direction, each tower plate comprises a supporting plate fixed with the accommodating cavity and a plurality of pipe assemblies arranged on the supporting plate at intervals, and sieve holes for circulation of steam and the absorbent are formed between every two adjacent pipe assemblies.

As a further improvement of the method, the cross section of the pipe component is in a quadrilateral shape with bilateral symmetry.

As a further improvement of the method of the present invention, the quadrangular cross section of the pipe assembly is formed with an upper triangular section and a lower triangular section which are different in height, and the upper triangular section and the lower triangular section are alternately connected to the supporting plate.

As a further improvement of the method, the absorbent inlet is positioned below the steam outlet, and the absorbent outlet is positioned below the steam inlet.

Due to the adoption of the technical scheme, make the utility model discloses possess following beneficial effect:

at present domestic and abroad generally adopt the spray column to absorb and treat the pentanediamine, and the utility model discloses then adopt the cross flow sieve plate tower to absorb and treat the pentanediamine, compare with the former and improved absorption efficiency greatly, reduced equipment investment and working costs, and improved enterprise economic benefits and environmental benefit.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a working principle diagram of a device for efficiently absorbing pentamethylene diamine in steam provided by the embodiment of the utility model.

Fig. 2 is a schematic cross-sectional view of a sieve plate tower plate provided by an embodiment of the present invention.

Fig. 3 is a schematic top plan view of a sieve plate tower plate provided in an embodiment of the present invention.

The label correspondence in the figure is as follows:

1-a tower body; 11-absorbent feed port; 12-a steam outlet; 13-a steam inlet; 14-outlet of absorbent; 2-tower plate; 21-mesh; 22-a tube assembly; 23-upper triangular segment; 24-lower triangular segment; 25-support plate.

Detailed Description

The following description will further explain embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1-3 show, the embodiment of the utility model provides a device of pentamethylene diamine in high-efficient absorption steam, the device include the sieve tray tower, and the sieve tray tower includes tower body 1 and a plurality of column plate 2, has laid a plurality of sieve meshes 21 on every column plate 2, forms the sieve, and tower body 1 utensil holds the chamber, and a plurality of column plate 2 are established along upper and lower direction interval and are being held the intracavity. The top of the tower body 1 is provided with an absorbent inlet 11 and a steam outlet 12, the bottom of the tower body 1 is provided with a steam inlet 13 and an absorbent outlet 14, wherein the absorbent inlet 11 is positioned below the steam outlet 12, and the absorbent outlet 14 is positioned below the steam inlet 13.

As shown in fig. 2 and 3, each tray 2 of the tray tower includes a supporting plate 25 fixedly connected to the wall of the containing chamber and a plurality of tube assemblies 22 horizontally and uniformly spaced from the supporting plate 25, and the gaps between adjacent tube assemblies 22 form strip-shaped sieve holes 21 for circulating steam and absorbent. The cross section of the tower body 1 of the sieve plate tower can be circular or square, and correspondingly, the support plate 25 is a circular or square ring body with the shape similar to that of the circular or square tower body 1. The support plate 25 may be directly fixed to the wall of the receiving chamber, for example, by welding or bolting. Or a plurality of positioning angle plates can be respectively arranged on the wall of the accommodating cavity at different heights, and the supporting plates 25 are correspondingly arranged on the positioning angle plates at each height position one by one.

A plurality of pipe assemblies 22 are fixed on the upper surface of the supporting plate 25 at regular intervals in the same horizontal direction, the cross section of the pipe assembly 22 is in a quadrangular shape symmetrical to the left and right as shown in fig. 2, and the quadrangular cross section of the pipe assembly 22 is formed with upper triangular sections 23 and lower triangular sections 24 having different heights, and the upper triangular sections 23 and the lower triangular sections 24 are alternately connected to the supporting plate 25. The quadrilateral tube assemblies 22 are staggered and thus less prone to clogging. The bottom steam rises along the slopes of the upper triangular section 23 and the lower triangular section 24, and is not easy to form a vortex, so that the pressure drop loss is small. The quadrilateral tube assemblies 22 also increase the surface area for gas-liquid contact, which can improve the heat and mass transfer efficiency of the tray, and thus improve the absorption efficiency of the pentanediamine.

The utility model also provides a method of pentamethylene diamine in the high-efficient absorption steam, the device of pentamethylene diamine in the high-efficient absorption steam in through above-mentioned embodiment realizes, and the method of pentamethylene diamine in this high-efficient absorption steam mainly is: the absorbent absorbs the pentanediamine in the steam through the sieve plate tower.

Specifically, the vapor containing pentanediamine enters from a vapor inlet 13 at the bottom of the sieve plate column, and the absorbent enters from an absorbent inlet 11 at the top of the sieve plate column. The absorbent can be clear water or aqueous solution containing low-concentration pentanediamine component, and flows from the upper tower plate to the lower tower plate of the sieve plate tower through the sieve holes on the tower plates 2 from top to bottom by gravity, and then flows downwards from the upper tower plate to the lower tower plate, and finally is discharged from the absorbent discharge port 14 at the bottom of the sieve plate tower. The steam containing the pentanediamine passes through the sieve holes from bottom to top by the pressure difference and flows from the liquid layer on the tower plate to the tower top plate by plate, the steam containing the pentanediamine directly contacts with the absorbent on the tower plate to form bubbles and liquid foam, the foam layer increases the contact area of the two, is beneficial to two-phase mass transfer and improves the absorption efficiency of the absorbent on the pentanediamine. And recycling the absorbent which absorbs the pentamethylene diamine.

Further, in this example, an aqueous solution containing 0 to 10 mass% of pentamethylenediamine is used as the absorbent, and pentamethylenediamine is a colorless and viscous fuming liquid having a special odor and is easily soluble in water, and the absorption effect is better as the content of pentamethylenediamine in the aqueous solution is lower, and the absorption effect is remarkably deteriorated as the content of pentamethylenediamine in the aqueous solution exceeds 10%.

The tower plate of the sieve plate tower is formed by staggered arrangement of quadrilateral pipe assemblies with bilateral symmetry sections, a closed structure is formed, and blockage is not easy to occur. The steam at the bottom of the tower rises along the inclined plane of the quadrangular pipe assembly, so that local vortex cannot be formed, the pressure drop loss is small, and the absorption efficiency of the pentamethylene diamine is greatly improved.

The method adopts the sieve plate tower, the structure of the sieve plate tower is simple, no liquid level difference exists on the tower plate, the surface of the tower plate is fully utilized, the manufacture is convenient, the pressure drop is low, the treatment capacity is large, the efficiency is high, the design method is mature, and the installation and the maintenance are easy. Compared with a spray tower, the sieve plate tower increases the contact surface area of the pentanediamine waste gas and water, and greatly improves the mass transfer efficiency.

Further, the utility model discloses a sieve plate tower should be noted the control of top of the tower pressure in the use, and generally speaking, top of the tower pressure is a little higher than the ordinary pressure, and pressure is too high, can make and deviate from gaseous difficulty, and steam can sharply increase simultaneously, produces the area material to the top of the tower easily, reduces the absorption efficiency to pentanediamine. The method has low operation cost, high energy utilization rate and high economic benefit.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. An apparatus for efficiently absorbing pentamethylene diamine in steam, which is characterized by comprising:

2. The apparatus for efficiently absorbing pentamethylene diamine in steam as set forth in claim 1, wherein the cross section of the tube assembly has a quadrangular shape with bilateral symmetry.

3. An apparatus for highly absorbing pentanediamine in vapor according to claim 2, wherein the quadrangular cross section of the tube assembly is formed with upper and lower triangular sections having different heights, and the upper and lower triangular sections are alternately connected to the supporting plate.

4. The device for efficiently absorbing pentamethylene diamine in steam as claimed in claim 1, wherein the absorbent inlet is positioned below the steam outlet, and the absorbent outlet is positioned below the steam inlet.