CN211585276U

CN211585276U - Rectifying tower for ethanol recovery

Info

Publication number: CN211585276U
Application number: CN201922425845.6U
Authority: CN
Inventors: 杨麟; 曾伟; 吴纬斌; 徐荣昌
Original assignee: Zhejiang Hailan Chemical Group Co ltd; Quzhou University
Current assignee: Zhejiang Hailan Chemical Group Co ltd; Quzhou University
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-29
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses a rectifying tower for recovering ethanol, which comprises a tower body and a skirt used for fixing the tower body, wherein the tower body is internally provided with a tower tray, an air inlet, an air outlet, a liquid inlet and a liquid outlet; the skirt includes upper end open-ended barrel, the barrel is structure as an organic whole and down divide into first spacing body from top to bottom, spacing body of second and supporter, first spacing body is the ring structure, there is radial inside annular supporting seat that sets up on the spacing internal wall of second, annular supporting seat up end is inside sunken arc surface, the supporter is the circular cone structure that from top to bottom external diameter is crescent gradually, the upper end opening part of first spacing body is equipped with the first welding groove around the tower body, through first welding groove with tower body welded fastening on first spacing body. The utility model discloses this mounting means is very simple, carries on earlier spacingly, then is carrying out welded fastening, thereby improves the joint strength that the tower body was installed on the skirt through improving spacing area of contact and welded area of contact.

Description

Rectifying tower for ethanol recovery

Technical Field

The utility model belongs to the technical field of filter recovery unit, especially, relate to a rectifying column is used in ethanol recovery.

Background

When the tetrazole acetic acid is prepared, a mixed solution of byproduct ethanol is generated in a hydrolysis process and is originally discharged as wastewater all the time, the wastewater discharge amount is large, the COD concentration is high, the acidity is strong, certain influence is caused on the local environment after the discharge, and the byproduct ethanol cannot be effectively recycled, so that a large amount of solvent waste is caused, so that the feasibility of recycling and comprehensive utilization of the ethanol is necessarily researched.

A recovery system for recovering ethanol has been developed, wherein the most important device in the recovery system is a rectifying tower, and the rectifying tower utilizes the property that each component in a mixture has different volatility, i.e. the vapor pressure of each component is different at the same temperature, so that a light component (low-boiling-point substance) in a liquid phase is transferred to a gas phase, and a heavy component (high-boiling-point substance) in the gas phase is transferred to the liquid phase, thereby achieving the purpose of separation.

The rectifying column main body is usually installed on a column skirt, however, because the height of the existing rectifying column is too high, the pressure borne by the column skirt is huge, so that the standing state is unstable, and the inclination is easy to occur. The utility model discloses a chinese utility model for CN208750349U discloses a titanium material tower skirt structure, sets skirt to skirt upper portion and skirt lower part, and wherein skirt upper portion is the titanium material, and the skirt lower part is the carbon steel material, improves the intensity of skirt through using different materials, though this structure can improve certain stability can, still not enough, and the maintenance is also inconvenient moreover.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the technical problem who exists to the aforesaid, provide a rectifying column that intensity is high, is difficult for empting for retrieve ethanol.

The purpose of the utility model is realized like this: a rectifying tower for ethanol recovery comprises a tower body and a skirt used for fixing the tower body, wherein a plurality of tower trays, an air inlet, an air outlet, a liquid inlet and a liquid outlet are arranged in the tower body, the tower trays are stacked from bottom to top, the air inlet and the liquid outlet are arranged below the side of the tower body, the liquid inlet is arranged at the middle upper part of the tower body, and the air outlet is arranged at the top of the tower body; the skirt includes upper end open-ended barrel, the barrel is structure as an organic whole and by last down divide into first spacing body, the spacing body of second and supporter, first spacing body is the ring structure, there is radial inside annular supporting seat that sets up on the spacing internal wall of second, annular supporting seat up end is inside sunken arc surface, the supporter is the cone structure that by last down external diameter is crescent, the tower body install in back on the skirt, the bottom of tower body set up in on the annular supporting seat, the lateral wall of tower body with the inner wall of first spacing body the inner wall of the spacing body of second closely laminates, the upper end opening part of first spacing body is equipped with and encircles the first welding groove of tower body, through first welding groove will the tower body welded fastening is in on the first spacing body.

By adopting the technical scheme, the rectifying tower works in a mode that after entering from the liquid inlet, liquid flows through the tower trays from top to bottom under the self gravity in sequence and is discharged from the liquid outlet, wherein the generated ethanol gas is discharged to the gas outlet under the pushing of the pressure difference. The utility model discloses an improve the intensity of rectifying column, set the skirt into first spacing body to this, spacing body of second and supporter, and set up cyclic annular supporting seat on first supporter, during the installation, fix the supporter through the bolt earlier, then install the tower body again, the tower body is embedded into first spacing body and second spacing body, wherein, the bottom of tower body sets up on cyclic annular supporting seat, and the lateral wall of tower body is respectively in first spacing body, the inner wall of second spacing body in close contact with, then weld in the first welding groove of first spacing body through welder, thereby fix the tower body again on first spacing body, this mounting means is very simple, spacing first, then weld and fix, thereby improve the joint strength that the tower body installed on the skirt through improving spacing area of contact and welded area of contact; the support body is set to be in a round table shape with a small upper end and a large lower end, and the stability of the whole skirt can be improved.

The utility model discloses further set up to: a first manhole leading to the inner side of the tower body is arranged below the tower body side; the barrel is provided with a second manhole leading to the inner side of the barrel, an opening at the upper end of the annular supporting seat is provided with a second welding groove surrounding the bottom of the tower body, and the bottom of the tower body is welded and fixed on the second limiting body through the second welding groove.

By adopting the technical scheme, the first manhole is arranged on the tower body so as to be convenient for inspection and maintenance; the second manhole is arranged on the skirt, so that during installation, workers can enter the skirt, and the installation condition of the tower body can be observed, so that dislocation is avoided; wherein for the joint strength between further improvement tower body and the skirt, set up second welding groove on cyclic annular supporting seat to this to improve welding area.

The utility model discloses further set up to: annular supporting seat bottom still is provided with the tip and extends to triangle-shaped strengthening rib on the second spacing internal wall, triangle-shaped strengthening rib has a plurality of and circumference direction evenly distributed.

Through adopting above-mentioned technical scheme to improve the joint strength between second spacing body and the cyclic annular supporting seat, and then improve the joint strength between tower body and the skirt.

The utility model discloses further set up to: the liquid discharge port is located in the middle of the bottom of the tower body, and an L-shaped pipeline with a port extending to the outer side of the cylinder body is further arranged on the liquid discharge port.

Through adopting above-mentioned technical scheme, set up L shape pipeline so that discharge the waste liquid on the leakage fluid dram.

The utility model discloses further set up to: the tower tray comprises a fixing ring, a tower plate which is arranged on the fixing ring and provided with a plurality of filtering holes, an overflow weir which is arranged at the upper end of the tower plate, and a downcomer of which the upper end penetrates from the bottom to the top of the tower plate, wherein the fixing ring is arranged on the inner wall of the tower body, the downcomer on the tower tray above extends to the tower plate of the tower tray below, and the overflow weir is obliquely arranged on the tower plate outwards; the inclined angle between the overflow weir and the tower plate is 120-150 degrees.

By adopting the technical scheme, when the gas phase rises, the gas phase passes through the filter holes and then bubbles out through the liquid phase layer, so that the full contact of the gas phase and the liquid phase is completed, the effect of heat and mass transfer is achieved, and meanwhile, the liquid phase falls back to the lower part of the tower body through the downcomer; the overflow weir is obliquely arranged on the tower plate outwards to improve the scouring force of the liquid on the tower plate.

The utility model discloses further set up to: the tray comprises a tray body, a fixing ring and a spring, wherein the fixing ring is arranged on the tray body, the spring is arranged on the tray body, the fixing ring is arranged on the inner wall of the fixing ring, the ring-shaped groove is radially and outwards formed in the inner wall of the fixing ring, the tray body is arranged in the ring-shaped groove, one end of the tray body is arranged at the bottom of the ring-shaped groove, the other end of the tray body is arranged on the spring on the tray body, the spring is used for driving the tray body to move so as to.

Through adopting above-mentioned technical scheme, for avoiding long-time back filter hole on the column plate to take place to block up, set up the column plate activity to this, when filter hole blocks up and needs the clearance, shake through the electromagnetic shaker to drive the column plate and rock from top to bottom, and then reach the purpose of clearing up filter hole.

The utility model has the advantages that: 1. the installation mode of the utility model is very simple, the limiting is firstly carried out, then the welding and fixing are carried out, and the connection strength of the tower body installed on the skirt is improved by improving the contact area of the limiting and the contact area of the welding; 2. the support body is arranged to be in a round table shape with a small upper end and a large lower end, so that the stability of the whole skirt can be improved; 3. in order to avoid the blockage of the filter holes on the tower plate after a long time, the tower plate is movably arranged, and when the blockage of the filter holes needs to be cleaned, the vibrator vibrates to drive the tower plate to shake up and down, so that the purpose of cleaning the filter holes is achieved.

Drawings

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

FIG. 2 is an enlarged view at A in FIG. 1;

fig. 3 is a schematic structural view of the tray of the present invention;

the reference numbers in the figures are: 1. a tower body; 11. a tray; 111. a fixing ring; 112. a column plate; 113. an overflow weir; 114. a downcomer; 115. a spring; 116. a vibrator; 12. an air inlet; 13. an air outlet; 14. a liquid inlet; 15. a liquid discharge port; 151. an L-shaped duct; 16. a first manhole; 2. a skirt; 21. a first position limiting body; 22. a second position limiting body; 23. a support body; 24. an annular supporting seat; 25. a first welding groove; 26. a second manhole; 27. a second welding groove; 28. and (5) triangular reinforcing ribs.

Detailed Description

In order to make the technical solutions in the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings:

a rectifying tower for ethanol recovery, as shown in figures 1 and 2, comprises a tower body 1 and a skirt 2 for fixing the tower body 1, wherein the tower body 1 is internally provided with a plurality of tower trays 11, an air inlet 12, an air outlet 13, a liquid inlet 14 and a liquid outlet 15, the tower trays 11 are stacked from bottom to top, the air inlet 12 and the liquid outlet 15 are positioned below the side of the tower body 1, the liquid inlet 14 is positioned at the middle upper part of the tower body 1, and the air outlet 13 is positioned at the top of the tower body 1; skirt 2 includes upper end open-ended barrel, the barrel is first spacing body 21 as an organic whole structure and by last down divide into, spacing body 22 of second and supporter 23, first spacing body 21 is the ring structure, there is radial inside annular supporting seat 24 who sets up on the spacing body 22 inner wall of second, annular supporting seat 24 up end is inside sunken arc surface, supporter 23 is the circular cone structure that by last down external diameter is crescent, tower body 1 installs the back on skirt 2, the bottom of tower body 1 sets up on annular supporting seat 24, the lateral wall of tower body 1 and the inner wall of first spacing body 21, the inner wall of the spacing body 22 of second closely laminates, the upper end opening part of first spacing body 21 is equipped with the first welding groove 25 that encircles tower body 1, through first welding groove 25 with tower body 1 welded fastening on first spacing body 21.

The rectifying tower works in such a way that after entering from the liquid inlet 14, liquid flows through the tray 11 from top to bottom under the self-gravity and is discharged from the liquid outlet 15, wherein the generated ethanol gas is discharged to the gas outlet 13 under the pushing of the pressure difference. The utility model aims to improve the strength of the rectifying tower, and the skirt support 2 is arranged into a first limiting body 21, a second limiting body 22 and a supporting body 23, and the first support 23 is provided with an annular support seat 24, when mounting, the support 23 is fixed by bolts, then the tower body 1 is installed, the tower body 1 is embedded into the first limiting body 21 and the second limiting body 22, wherein, the bottom of the tower body 1 is arranged on the annular supporting seat 24, and the side wall of the tower body 1 is respectively in close contact with the inner walls of the first limiting body 21 and the second limiting body 22, then the welding gun is used for welding in the first welding groove 25 of the first limiting body 21, thereby fixing the tower body 1 on the first limiting body 21, the installation mode is very simple, the limiting is firstly carried out, then the welding and fixing are carried out, and the connection strength of the tower body 1 installed on the skirt 2 is improved by improving the contact area of the limiting and the contact area of the welding; the support body 23 is formed in a truncated cone shape having a small upper end and a large lower end, and the stability of the entire skirt 2 can be improved.

A first manhole 16 leading to the inner side of the tower body 1 is arranged below the tower body 1; the barrel is provided with a second manhole 26 leading to the inner side of the barrel, the opening at the upper end of the annular supporting seat 24 is provided with a second welding groove 27 surrounding the bottom of the tower body 1, and the bottom of the tower body 1 is welded and fixed on the second limiting body 22 through the second welding groove 27.

A first manhole 16 is arranged on the tower body 1 so as to be convenient for inspection and maintenance; the second manhole 26 is arranged on the skirt 2, so that during installation, workers can enter the skirt 2, and the installation condition of the tower body 1 can be observed, so as to avoid dislocation; wherein, in order to further improve the connection strength between the tower body 1 and the skirt 2, a second welding groove 27 is arranged on the annular supporting seat 24, so as to improve the welding area.

Preferably, the bottom of the annular supporting seat 24 is further provided with a triangular reinforcing rib 28, the end of which extends to the inner wall of the second limiting body 22, and the triangular reinforcing rib 28 is uniformly distributed in a plurality of circumferential directions. Through adopting above-mentioned technical scheme to improve the joint strength between second spacing body 22 and the cyclic annular supporting seat 24, and then improve the joint strength between tower body 1 and skirt 2.

Optimally, the liquid discharge port 15 is positioned at the middle position of the bottom of the tower body 1, an L-shaped pipeline 151 with a port extending to the outer side of the cylinder body is further arranged on the liquid discharge port 15, and waste liquid is conveniently discharged through the L-shaped pipeline 151.

As shown in fig. 3, the tray 11 includes a fixed ring 111, a tray plate 112 disposed on the fixed ring 111 and having a plurality of filtering holes, a weir 113 disposed on the upper end of the tray plate 112, and a downcomer 114 whose upper end penetrates from the bottom of the tray plate 112 to the top thereof, the fixed ring 111 is disposed on the inner wall of the tower body 1, the downcomer 114 on the tray 11 above extends to the tray plate 112 of the tray 11 below, and the weir 113 is disposed on the tray plate 112 obliquely outward; the angle of inclination between the weir 113 and the tray 112 is 120-150.

When the gas phase rises, the gas phase passes through the filter holes and then bubbles out through the liquid phase layer, so that the gas phase and the liquid phase are fully contacted, the effect of heat and mass transfer is achieved, and meanwhile, the liquid phase falls to the lower part of the tower body 1 through the downcomer 114; the overflow weir 113 is disposed on the tray 112 to be inclined outward to increase the washing force of the liquid on the tray 112.

Preferably, the inner wall of the fixing ring 111 is provided with an annular groove which is radially and outwardly opened, the tray 112 is arranged in the annular groove, the tray 11 further comprises a spring 115 which is arranged at the bottom of the annular groove and is arranged at the other end of the annular groove on the tray 112, and a vibrator 116 which is used for driving the tray 112 to move so as to compress or stretch the spring 115, the outer edge of the tray 112 is provided with an annular mounting groove which is coaxial with the outer edge, and the vibrator 116 is arranged in the mounting groove.

In order to avoid the blockage of the filter holes on the tower plate 112 after a long time, the tower plate 112 is movably arranged, and when the blockage of the filter holes needs to be cleaned, the vibrator 116 vibrates to drive the tower plate 112 to shake up and down, so that the purpose of cleaning the filter holes is achieved.

The above embodiments are only preferred embodiments of the present invention, not all embodiments, and other embodiments obtained based on the above embodiments by those skilled in the art without any creative work shall fall within the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A rectifying column for ethanol recovery is characterized in that: the tower comprises a tower body (1) and a skirt (2) used for fixing the tower body (1), wherein a plurality of trays (11), air inlets (12), air outlets (13), a liquid inlet (14) and a liquid outlet (15) are arranged in the tower body (1), the trays (11) are sequentially stacked from bottom to top, the air inlets (12) and the liquid outlet (15) are positioned below the side of the tower body (1), the liquid inlet (14) is positioned at the middle upper part of the tower body (1), and the air outlets (13) are positioned at the top of the tower body (1); the skirt (2) comprises a barrel with an upper end open, the barrel is of an integrated structure and is divided into a first limiting body (21), a second limiting body (22) and a supporting body (23) from top to bottom, the first limiting body (21) is of a circular ring structure, an annular supporting seat (24) which is radially and inwards arranged is arranged on the inner wall of the second limiting body (22), the upper end face of the annular supporting seat (24) is an inwards sunken arc surface, the supporting body (23) is of a conical structure with gradually increasing outer diameter from top to bottom, the tower body (1) is arranged on the skirt (2) and is backwards, the bottom of the tower body (1) is arranged on the annular supporting seat (24), the side wall of the tower body (1) is closely attached to the inner wall of the first limiting body (21) and the inner wall of the second limiting body (22), the upper end opening of the first limiting body (21) is provided with a first welding groove (25) surrounding the tower body (1), the tower body (1) is welded and fixed on the first limiting body (21) through the first welding groove (25).

2. The rectification column for ethanol recovery as claimed in claim 1, wherein: a first manhole (16) leading to the inner side of the tower body (1) is arranged below the tower body (1); be provided with on the barrel and lead to its inboard second manhole (26), the upper end opening part of cyclic annular supporting seat (24) is provided with and encircles second welding groove (27) of tower body (1) bottom, through second welding groove (27) will tower body (1) bottom welded fastening be in on the spacing body of second (22).

3. The rectification column for ethanol recovery as recited in claim 1 or 2, wherein: annular supporting seat (24) bottom still is provided with the tip and extends to triangle-shaped strengthening rib (28) on second spacing body (22) inner wall, triangle-shaped strengthening rib (28) have a plurality ofly and circumferential direction evenly distributed.

4. The rectification column for ethanol recovery as claimed in claim 1, wherein: the liquid discharge port (15) is located in the middle of the bottom of the tower body (1), and an L-shaped pipeline (151) with a port extending to the outer side of the cylinder body is further arranged on the liquid discharge port (15).

5. The rectification column for ethanol recovery as claimed in claim 1, wherein: the tower tray (11) comprises a fixing ring (111), a tower plate (112) which is arranged on the fixing ring (111) and is provided with a plurality of filtering holes, an overflow weir (113) which is arranged at the upper end of the tower plate (112) and a downcomer (114) of which the upper end penetrates from the bottom of the tower plate (112) to the top of the tower plate, the fixing ring (111) is arranged on the inner wall of the tower body (1), the downcomer (114) on the tower tray (11) at the upper part extends to the tower plate (112) of the tower tray (11) at the lower part, and the overflow weir (113) is obliquely arranged on the tower plate (112) outwards.

6. The rectification column for ethanol recovery as claimed in claim 5, wherein: the angle of inclination between the overflow weir (113) and the tray (112) is 120-150 deg.

7. The rectification column for ethanol recovery as claimed in claim 5, wherein: the tray comprises a fixed ring (111), a tower plate (112), a spring (115) and a vibrator (116), wherein the inner wall of the fixed ring (111) is provided with an annular groove which is radially and outwards arranged, the tower plate (112) is arranged in the annular groove, one end of the spring (115) is arranged at the bottom of the annular groove, the other end of the spring (115) is arranged on the tower plate (112), the vibrator (116) is used for driving the tower plate (112) to move so as to compress or stretch the spring (115), the outer edge of the tower plate (112) is provided with an annular mounting groove which is coaxial with the annular mounting groove, and the vibrator (.