CN215609431U

CN215609431U - Efficient energy-saving ammoximation rectifying tower

Info

Publication number: CN215609431U
Application number: CN202122098486.5U
Authority: CN
Inventors: 瞿亚平; 陈林兵; 胡林
Original assignee: Fujian Eversun Technology Co ltd
Current assignee: Fujian Eversun Technology Co ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2022-01-25
Anticipated expiration: 2031-09-01

Abstract

The utility model provides a high-efficiency energy-saving ammoximation rectifying tower, which comprises: a rectifying tower; the low pressure steam condenser pipe, the low pressure steam condenser pipe connect in low pressure steam condensate pipeline export on the rectifying column, the surface mounting of low pressure steam condenser pipe has first outer pipe and second outer pipe, the one end of first outer pipe is provided with the feeding tube head, the one end of second outer pipe is provided with ejection of compact tube head, the other end of first outer pipe is provided with out the liquid tube head. According to the high-efficiency energy-saving ammoximation rectifying tower provided by the utility model, the outer layer pipe is arranged on the outer side of the low-pressure steam condensing pipe, low-pressure steam is conveyed through the low-pressure steam condensing pipe, and the toluene-oxime solution containing 25 wt% of cyclohexanone-oxime is conveyed through the outer layer pipe, namely, the first heat exchange is carried out in the process of conveying the toluene-oxime solution to the heat exchanger, and the second heat exchange is carried out after the toluene-oxime solution passes through the heat exchanger, so that the heat exchange efficiency can be improved, and the energy conservation and the environmental protection are better.

Description

Efficient energy-saving ammoximation rectifying tower

Technical Field

The utility model relates to the field of ammoximation rectifying towers, in particular to an efficient energy-saving ammoximation rectifying tower.

Background

The rectifying tower is a tower-type gas-liquid contact device for rectifying.

A rectifying tower is required in the current ammoximation processing process, low-pressure steam condensate water and a toluene-oxime solution containing 25 percent (wt) of cyclohexanone-oxime in the rectifying tower are led into a heat exchanger by the rectifying tower, and the toluene-oxime solution containing 25 percent (wt) of cyclohexanone-oxime is heated by the temperature in the low-pressure steam condensate water, so that the recovery of waste heat can be realized, and the purposes of energy conservation and emission reduction are achieved.

However, the low-pressure condensed water needs to be conveyed through a pipeline when being guided into the heat exchanger at present, and in the process of pipeline conveying, the heat in the low-pressure steam condensed water is continuously lost, so that the heat can not be exchanged with a toluene-oxime solution containing 25 percent (wt) of cyclohexanone oxime, and partial energy loss is caused.

Therefore, it is necessary to provide an efficient and energy-saving ammoximation rectification tower to solve the technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides an efficient energy-saving ammoximation rectifying tower, which solves the problem that heat cannot be exchanged with a toluene-oxime solution containing 25 percent (wt) of cyclohexanone-oxime when low-pressure condensed water is conveyed.

In order to solve the technical problems, the utility model provides an efficient energy-saving ammoximation rectifying tower, which comprises:

a rectifying tower;

the low-pressure steam condenser pipe is connected to an outlet of a low-pressure steam condensate pipeline on the rectifying tower, a first outer layer pipe and a second outer layer pipe are mounted on the surface of the low-pressure steam condenser pipe, a feeding pipe head is arranged at one end of the first outer layer pipe, a discharging pipe head is arranged at one end of the second outer layer pipe, a liquid outlet pipe head is arranged at the other end of the first outer layer pipe, a liquid inlet pipe head is arranged at the other end of the second outer layer pipe, and the liquid outlet pipe head is communicated with the liquid inlet pipe head through a connecting pipe;

and a heat source inlet of the heat exchanger is communicated with the low-pressure steam condenser pipe, and a feed end of the heat exchanger is communicated with the discharge pipe head through a pipeline.

Preferably, the discharge end of the heat exchanger is communicated with the feed inlet of the rectifying tower.

Preferably, the heat source outlet of the rectifying tower is communicated with the condensing tank through a pipeline.

Preferably, the first outer layer pipe and the second outer layer pipe both comprise a lower side half pipe and an upper side half pipe, flanges are arranged at two ends of the lower side half pipe and the upper side half pipe, and rubber rings are bonded on the inner sides of the flanges.

Preferably, the seal groove has all been seted up on the both sides of the half pipe one side of downside, the both sides of the half pipe one side of upside all are provided with sealed arch, sealed bellied both sides all bond and have the cushion.

Preferably, the both sides of downside semicanal are a plurality of fixed blocks of equal fixedly connected with, the top fixedly connected with screw shaft of fixed block.

Preferably, a plurality of locating pieces are fixedly connected to two sides of the upper half pipe, fixing holes are formed in the locating pieces, and limiting holes are formed in one side, located in the fixing holes, of the locating pieces.

Preferably, threaded connection has star type nut on the threaded spindle, be provided with the setting element on the star type nut, the setting element includes L shape mounting bracket, it has the location axle to run through on the L shape mounting bracket, the downside fixedly connected with drive ring on location axle surface, the surface of location axle and the upside cover that is located drive ring are equipped with the elastic component, the top of location axle is provided with the end cap, the surface of location axle is provided with the screw thread, threaded hole is seted up to the upside of L shape mounting bracket.

Compared with the related technology, the high-efficiency energy-saving ammoximation rectifying tower provided by the utility model has the following beneficial effects:

the utility model provides an efficient energy-saving ammoximation rectifying tower, wherein an outer layer pipe is arranged on the outer side of a low-pressure steam condensing pipe, low-pressure steam is conveyed through the low-pressure steam condensing pipe, a toluene-oxime solution containing 25 wt% of cyclohexanone-oxime is conveyed through the outer layer pipe, namely, the first heat exchange is carried out in the process of conveying the toluene-oxime solution to a heat exchanger, and the second heat exchange is carried out after the toluene-oxime solution passes through the heat exchanger, so that the heat exchange efficiency can be improved, and the energy conservation and the environmental protection are better.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of an efficient energy-saving ammoximation rectification tower provided by the utility model;

FIG. 2 is a cross-sectional view of the portion shown in FIG. 1;

FIG. 3 is a schematic structural diagram of a second embodiment of the high-efficiency energy-saving ammoximation rectification tower provided by the utility model;

FIG. 4 is an enlarged view of portion A of FIG. 3;

fig. 5 is a partial structural view of fig. 3.

Reference numbers in the figures:

1. a rectifying tower, 2, a heat exchanger, 3, a low-pressure steam condenser pipe, 4, a first outer layer pipe, 5, a second outer layer pipe, 6, a liquid outlet pipe head, 7, a liquid inlet pipe head, 8, a connecting pipe, 9, a feeding pipe head, 10, a feeding pipe, 11 and a discharging pipe head,

12. a lower half pipe 13, an upper half pipe 14, a fixing block 15, a positioning block 16, a fixing hole 17, a limiting hole 18, a star-shaped nut 19, a threaded shaft,

20. the positioning piece 21, the L-shaped mounting frame 22, the positioning shaft 23, the elastic piece 24, the threaded hole 25 and the driving ring.

Detailed Description

The utility model is further described with reference to the following figures and embodiments.

Referring to fig. 1 and fig. 2, wherein fig. 1 is a schematic structural diagram of a first embodiment of an efficient energy-saving ammoximation rectification column provided by the present invention; fig. 2 is a partial cross-sectional view of fig. 1. High-efficient energy-saving ammoximation rectifying column includes:

a rectifying column 1;

the low-pressure steam condenser pipe 3 is connected to the outlet of a low-pressure steam condensate pipeline on the rectifying tower 1, a first outer layer pipe 4 and a second outer layer pipe 5 are mounted on the surface of the low-pressure steam condenser pipe 3, a feeding pipe head 9 is arranged at one end of the first outer layer pipe 4, a discharging pipe head 11 is arranged at one end of the second outer layer pipe 5, a liquid outlet pipe head 6 is arranged at the other end of the first outer layer pipe 4, a liquid inlet pipe head 7 is arranged at the other end of the second outer layer pipe 5, and the liquid outlet pipe head 6 is communicated with the liquid inlet pipe head 7 through a connecting pipe 8;

and a heat source inlet of the heat exchanger 2 is communicated with the low-pressure steam condenser pipe 3, and a feed end of the heat exchanger 2 is communicated with the discharge pipe head 11 through a pipeline.

The liquid outlet pipe heads 6 and the liquid inlet pipe heads 7 are correspondingly provided with a plurality of, at least four, so that the conveying speed of a toluene-oxime solution containing 25 wt% of cyclohexanone-oxime is ensured, and the problem of connection of outer pipes at a bent part can be solved by arranging the liquid outlet pipe heads 6 and the liquid inlet pipe heads 7 to be matched with the connecting pipe 8;

the low-pressure steam condensation pipe 3 is a metal pipe with good heat conductivity, the first outer layer pipe 4 and the second outer layer pipe 5 are preferably arranged to be pipelines with poor heat conductivity, such as plastic pipes and the like, and the outer layer is provided with a heat insulation sleeve.

And the discharge end of the heat exchanger 2 is communicated with the feed inlet of the rectifying tower 1.

And a heat source outlet of the rectifying tower 1 is communicated with a condensing tank through a pipeline.

And a regulating valve is arranged on the pipeline connected with the condensing pipe.

The working principle of the high-efficiency energy-saving ammoximation rectifying tower provided by the utility model is as follows:

a pipeline for inputting a toluene-oxime solution containing 25 percent (wt) of cyclohexanone-oxime is connected with a feeding pipe head 9 on the first outer layer pipe 4 in a flange connection or other connection modes;

when conveying materials, the toluene-oxime solution containing 25 wt% of cyclohexanone-oxime flows into the second outer layer pipe 5 along the first outer layer pipe 4 through a plurality of connecting pipes 8 and then enters the heat exchanger;

meanwhile, low-pressure steam enters the heat exchanger 2 from the low-pressure steam condensation pipe 3, and when the low-pressure steam is conveyed in the low-pressure steam condensation pipe 3, the low-pressure steam and a toluene-oxime solution containing 25 wt% of cyclohexanone-oxime on the outer side of the low-pressure steam condensation pipe 3 perform primary heat exchange, and after entering the heat exchanger 2, secondary heat exchange is performed, so that the utilization efficiency of heat in the low-pressure steam is improved, and more energy is saved.

through setting up outer tube in the outside of low pressure steam condenser pipe 3, low pressure steam passes through low pressure steam condenser pipe 3 and carries, and toluene-oxime solution that contains cyclohexanone oxime 25% (wt) passes through outer tube and carries, is carrying to the in-process of heat exchanger 2 promptly, opens promptly and establishes and carry out the heat transfer for the first time, carries out the heat transfer for the second time behind heat exchanger 2 to can improve heat exchange efficiency, more energy-concerving and environment-protective.

Second embodiment

Referring to fig. 3, fig. 4 and fig. 5, a second embodiment of the present application provides another energy-efficient ammoximation rectification column based on the energy-efficient ammoximation rectification column provided by the first embodiment of the present application. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.

Specifically, the energy-efficient type ammoximation rectifying column that the second embodiment of this application provided's difference lies in, energy-efficient type ammoximation rectifying column, first outer layer pipe 4 and second outer layer pipe 5 all include downside half-pipe 12 and upside half-pipe 13, the both ends of downside half-pipe 12 and upside half-pipe 13 all are provided with the flange, the inboard bonding of flange has the rubber ring.

The outer layer pipe is arranged into an upper half pipe and a lower half pipe, so that the outer layer pipe and the lower half pipe are convenient to splice and install.

The seal groove has all been seted up on the both sides of downside semi-tube 12 one side, the both sides of upside semi-tube 13 one side all are provided with sealed arch, sealed bellied both sides all bond there is the cushion.

The sealing grooves are matched with the sealing impact and the rubber pads on the two sides, so that the sealing performance of the connection between the lower half pipe 12 and the upper half pipe 13 is guaranteed.

Both sides of the lower half pipe 12 are fixedly connected with a plurality of fixing blocks 14, and the top of each fixing block 14 is fixedly connected with a threaded shaft 19.

Four fixed blocks 14 are no less than all set up on first outer pipe 4 and the second outer pipe 5, and specific quantity can specifically set up according to the length of first outer pipe 4 and second outer pipe 5.

The two sides of the upper half pipe 13 are fixedly connected with a plurality of positioning blocks 15, the positioning blocks 15 are provided with fixing holes 16, and one side, located on the fixing holes 16, of each positioning block 15 is provided with a limiting hole 17.

The number of the positioning blocks 15 is the same as that of the fixing blocks 14, and the diameter of the fixing hole 16 is the same as that of the threaded shaft 19.

Threaded connection has star type nut 18 on the threaded spindle 19, be provided with setting element 20 on the star type nut 18, setting element 20 includes L shape mounting bracket 21, it has location axle 22 to run through on the L shape mounting bracket 21, the downside fixedly connected with on location axle 22 surface drives ring 25, and the surface of location axle 22 and the upside cover that is located drive ring 25 are equipped with elastic component 23, the top of location axle 22 is provided with the end cap, the surface of location axle 22 is provided with the screw thread, threaded hole has been seted up to the upside of L shape mounting bracket 21.

The positioning piece 20 is arranged on a driving handle on the star-shaped nut 18, the L-shaped mounting rack 21 is fixed on the star-shaped nut 18, the distance between the upper side of the thread on the positioning shaft 22 and the threaded hole is the same as the length of the positioning shaft 22 entering the limiting hole 17, and the positioning shaft 22 penetrates through the L-shaped mounting rack 21 through the threaded hole;

when the outer layer pipe and the low-pressure steam condenser pipe 3 are spliced, the first outer layer pipe 4 and the second outer layer pipe 5 are correspondingly spliced on the low-pressure steam condenser pipe 3, and the threaded shaft 19 on the fixing block 14 correspondingly penetrates through the fixing hole 16 on the positioning block 15;

then the star nut and the threaded shaft 19 are screwed to limit the star nut, the positioning shaft 22 corresponds to the limiting hole 17 at the moment, the positioning shaft 22 is screwed for two circles, so that the nut on the surface is separated from the threaded hole 24, the driving ring 25 is pushed under the action of the elastic part 23 at the moment, the driving ring 25 pushes the positioning shaft 22 to enter the limiting hole 17, the star nut 18 is limited, the threaded shaft 19 is prevented from loosening, the fixation is stable, and the installation and the operation are simple and convenient;

during disassembly, the positioning shaft 22 is firstly pulled out of the limiting hole 17, then is screwed with the threaded hole 24 to limit the limiting hole, and then the star-shaped nut 18 can be screwed, so that the disassembly operation is simple and convenient, and the operations such as replacement and maintenance are convenient.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An energy-efficient type ammoximation rectifying column which is characterized by comprising:

a rectifying tower;

2. The efficient energy-saving ammoximation rectification column according to claim 1, wherein the discharge end of the heat exchanger is communicated with the feed inlet of the rectification column.

3. The efficient energy-saving ammoximation rectification tower according to claim 1, wherein a heat source outlet of the rectification tower is communicated with a condensing tank through a pipeline.

4. The efficient energy-saving ammoximation rectification tower according to claim 1, wherein the first outer layer pipe and the second outer layer pipe comprise a lower half pipe and an upper half pipe, flanges are arranged at two ends of the lower half pipe and the upper half pipe, and rubber rings are bonded on the inner sides of the flanges.

5. The efficient energy-saving ammoximation rectification tower of claim 4, wherein the sealing grooves are formed on both sides of one side of the lower half pipe, the sealing bulges are arranged on both sides of one side of the upper half pipe, and rubber pads are bonded on both sides of the sealing bulges.

6. The efficient energy-saving ammoximation rectification tower of claim 4, wherein a plurality of fixed blocks are fixedly connected to both sides of the lower half pipe, and a threaded shaft is fixedly connected to the tops of the fixed blocks.

7. The efficient energy-saving ammoximation rectification tower of claim 6, wherein a plurality of positioning blocks are fixedly connected to both sides of the upper half pipe, fixing holes are formed in the positioning blocks, and a limiting hole is formed in one side of the positioning block, which is positioned at the fixing hole.

8. The efficient energy-saving ammoximation rectification tower of claim 7, wherein the threaded shaft is connected with a star-shaped nut through threads, a positioning piece is arranged on the star-shaped nut and comprises an L-shaped mounting frame, a positioning shaft penetrates through the L-shaped mounting frame, a driving ring is fixedly connected to the lower side of the surface of the positioning shaft, an elastic piece is sleeved on the surface of the positioning shaft and the upper side of the driving ring, an end cap is arranged at the top of the positioning shaft, threads are arranged on the surface of the positioning shaft, and threaded holes are formed in the upper side of the L-shaped mounting frame.