CN213133214U

CN213133214U - Nylon reactor spray tower

Info

Publication number: CN213133214U
Application number: CN202021868843.0U
Authority: CN
Inventors: 卞江群; 马容忠
Original assignee: Yangzhou Huitong Technology Co ltd
Current assignee: Yangzhou Huitong Technology Co ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2021-05-07
Anticipated expiration: 2030-09-01

Abstract

The utility model relates to a nylon reactor spray column, the top of tower body is equipped with the tail gas export, the tower body inner chamber is equipped with the spray unit, the lower extreme submergence of tower body is in the subsider, the bottom plate slope of subsider sets up, the top welding of subsider has the subsider top cap, the inner edge and the tower body outer wall of subsider top cap weld mutually, the bottom plate center welding of subsider has the subsider sleeve pipe that upwards extends to the tower body inner chamber, the concatenation has the steam inlet pipe in the subsider sleeve pipe, steam inlet pipe and subsider sleeve pipe and tower body coaxial line, the welding of subsider sheathed tube upper end has the expansion joint, the upper end of expansion joint welds mutually with the upper end outer wall of steam inlet pipe, the last port top of. One side of the settling tank is spliced with a filter screen, a top cover of the settling tank is provided with a disassembling and washing door for the filter screen to be pulled and inserted, and the lowest part of a bottom plate of the settling tank is provided with a sewage outlet. The tower body of the spray tower has no harmful gas leakage, no volatile medium is emitted around the settling tank, the spray tower is environment-friendly, and the spray tower is convenient to mount in place.

Description

Nylon reactor spray tower

Technical Field

The utility model relates to a nylon reactor especially relates to a nylon reactor spray column, belongs to nylon production facility technical field.

Background

Most of nylon polymers are prepared by taking diamine and dibasic acid as raw materials and pure water as a carrier, performing neutralization reaction to produce a nylon salt aqueous solution, and then polymerizing to generate nylon macromolecules. The application products comprise nylon 56, nylon 66, nylon 1010, nylon 1012, nylon 6T, nylon 9T, nylon 10T, nylon 5T and the like.

In the polymerization reaction process, high-temperature heat conducting oil is usually adopted as a heat medium to heat the nylon salt solution, so that the nylon salt solution is continuously concentrated, the molecular chain of the material is gradually lengthened, and the viscosity is improved. The steam temperature that evaporates in the high pressure concentration process is higher, sprays through the spray column and gets rid of impurity and reduce the pressure of steam, can provide the low pressure concentrator tank as the heat source through the steam recycling pipe, saves the energy consumption of whole nylon production line.

The lower end of a tower body of a spray tower of an existing nylon reactor is immersed in a liquid seal settling tank, the top of the liquid seal settling tank is open, two groups of sprays are arranged on the upper portion of the tower body, spray pipes are arranged above the tower body, silk screen packing is arranged below the tower body, and the tower body is connected in a flange mode in a segmentation mode.

The traditional spray tower has the following defects: 1. the spraying coverage of the spraying pipe is small, the emptying is more, and the efficiency is low.

2. Each group of silk screen packing must be matched with a flange, so that leakage is easy to occur; the tower section must be disassembled and the flange removed for replacing the silk screen packing each time, and the procedure is complex and inconvenient for recovering after replacement.

3. The spray water contains volatile media, the settling tank is open, the surrounding harmful gases are more, the pungent smell is large, and the environment is polluted; solid materials in the liquid seal settling tank can flow out of the overflow pipe along with the liquid after the solid materials are not settled.

4. The steam inlet pipe is inserted from the center of the bottom of the settling tank, and harmful gas leaks between the steam inlet pipe and the sleeve of the settling tank, so that the environment is polluted.

5. The lower part of the tower body is provided with four ear type supports, the liquid seal settling tank is provided with four ear type supports, the middle part is also provided with a steam inlet pipe which needs to be centered, and the whole installation is difficult to be in place.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the problem that exists among the prior art, provide a nylon reactor spray column, no harmful gas leaks in the tower body, and the peripheral no volatile medium of subsider gives off, and is environment-friendly, and the installation is taken one's place conveniently.

For solving above technical problem, the utility model discloses a nylon reactor spray column, comprising a tower body, the top of tower body is equipped with the tail gas export, the tower body inner chamber is equipped with the spray unit, the lower extreme submergence of tower body is in the subsider, the top welding of subsider has the subsider top cap, the inner edge and the tower body outer wall of subsider top cap weld mutually, the bottom plate center welding of subsider has the subsider sleeve pipe that upwards extends to the tower body inner chamber, the grafting has the steam inlet pipe in the subsider sleeve pipe, steam inlet pipe and subsider sleeve pipe with the tower body coaxial line, the welding of subsider sheathed tube upper end has the expansion joint, the upper end of expansion joint with the upper end outer wall of steam inlet pipe welds mutually, the last port top of steam inlet pipe is equipped with gas distributor.

Compared with the prior art, the utility model discloses following beneficial effect has been obtained: steam from the previous process equipment enters the inner cavity of the tower body from the steam inlet pipe, flows upwards on the whole cross section of the tower body in a uniformly distributed mode through the guiding of the gas distributor, spraying media are sprayed out of the spraying units above the spraying units to collect and cool the steam, mass transfer and heat exchange are achieved, and the washed steam is discharged from the tail gas outlet at the top and serves as a clean heat source of the low-pressure concentration tank. The liquid phase carries solid particles to fall into the settling tank for settling, the upper end of the sleeve of the settling tank is sealed, the harmful gas in the tower body can be prevented from leaking outwards, and the expansion joint is arranged to adjust the deformation caused by expansion with heat and contraction with cold. The top of the settling tank is sealed by the top cover of the settling tank, so that the volatile medium and the pungent smell contained in the spraying water can not overflow and disperse into the external space. The lower part of the tower body is welded with the settling tank into a whole through the top cover of the settling tank, so that four supports of the tower body are omitted, the whole installation is more convenient and faster, and the steam inlet pipe is ensured to be accurately aligned with the tower body.

As an improvement of the utility model, the bottom plate of the settling tank is arranged obliquely, and the lowest part of the bottom plate of the settling tank is provided with a sewage outlet; one side of the settling tank is spliced with a filter screen, the bottom of the filter screen is abutted against the higher part of the bottom plate of the settling tank, the upper part of the side wall of the settling tank opposite to the filter screen is connected with an overflow pipe, and a top cover of the settling tank is provided with a disassembling and washing door for the filter screen to be pulled and inserted. A filter screen is additionally arranged in the settling tank, so that solid materials in the liquid of the settling tank cannot run off along with the overflow pipe; the liquid is filtered by a filter screen and then discharged from an overflow pipe; the filter screen can be drawn out for cleaning by opening the washing door on the top cover of the settling tank regularly, and the filter screen is still inserted into the original slot after being cleaned. The bottom plate of the settling tank is obliquely arranged and slopes to the sewage draining outlet, so that solid slag can be conveniently and periodically removed.

As a further improvement of the utility model, the tower body inner chamber is equipped with two sets ofly the unit that sprays, the shower that respectively sprays the unit pass from spray set pipe respectively, and each shower has welded shower mounting flange respectively on being close to the circumference of outer end, and each shower mounting flange and spray set pipe's flange fixed connection, the outer end of each shower are equipped with shower flange respectively, and the inner end of each shower extends to the axis department of tower body and has connect the nozzle soon respectively. The spray pipe fixing flange and the connecting bolt of the spray sleeve flange are disassembled, so that the spray pipe and the nozzle can be integrally taken out from the spray sleeve, the nozzle is convenient to install or replace, the stress concentration of a welding seam caused by the fact that the spray pipe directly penetrates through the tower body is avoided, the nozzle is compared with the spray holes, spraying liquid is convenient to spray on the whole cross section of the tower body, emptying and material carrying in the steam ascending process are avoided, and the capturing and cooling efficiency of the tower body is improved.

As a further improvement, the spraying units are provided with three groups in the height direction of the tower body, and each spraying unit comprises an upper spraying pipe and a lower spraying pipe. Six nozzles are provided, so that the spraying effect can be ensured.

As a further improvement of the utility model, the tower body wall at the opposite side of each spraying unit is respectively provided with an access hand hole. The spraying state of each nozzle is convenient for observe from the maintenance hand hole, whether the judgement takes place to block up, can also directly change the nozzle or clear up the nozzle through the maintenance hand hole.

As a further improvement of the utility model, the lower part of each spraying unit is respectively provided with a random packing layer, each random packing layer is respectively supported on the grid plate, and the tower body side wall corresponding to the random packing layer is respectively provided with a discharging hand hole. Loose packing such as pall rings and the like can be filled through the maintenance hand hole above the tower section, when the packing is replaced, the discharge hand hole can be opened, the pall rings can be directly taken out, and the tower section is not required to be disassembled by removing the flange; meanwhile, a flange does not need to be arranged on the tower body for replacing the filler, leakage points are reduced, and the workload during installation and maintenance is greatly reduced.

As a further improvement of the utility model, the lateral wall symmetry of subsider is equipped with four subsider supports. The four settling tank supports can support the settling tank and the tower body, so that four lug seats on the tower body are omitted, and the installation is more convenient and faster.

Drawings

The invention will be described in further detail with reference to the drawings and the detailed description, which are provided for reference and illustration purposes only and are not intended to limit the invention.

Fig. 1 is a front view of the nylon reactor spray tower of the present invention.

Fig. 2 is a top view of the nylon reactor spray tower of the present invention.

Fig. 3 is a front view of the middle filter screen of the present invention.

Fig. 4 is a top view of the grid plate of the present invention.

In the figure: 1. a tower body; 1a, a tail gas outlet; 1b, spraying a sleeve; 1c, overhauling a hand hole; 1d, discharging hand holes; 2. a settling tank; 2a, filtering a screen; 2b, an overflow pipe; 2c, a sewage draining outlet; 2d, a settling tank support; 3. a top cover of the settling tank; 3a, disassembling and washing the door; 4. a settling tank sleeve; 4a. an expansion joint; 5. a steam inlet pipe; 6. a shower pipe; 6a, fixing a flange on the spray pipe; 6b, connecting the spray pipe with a flange; 7. a scattered packing layer; 8. a grid plate; 9. a gas distributor.

Detailed Description

As shown in fig. 1 to 4, the utility model discloses a nylon reactor spray column includes tower body 1, the top of tower body 1 is equipped with tail gas outlet 1a, 1 inner chamber of tower body is equipped with the unit that sprays, the lower extreme submergence of tower body 1 is in subsider 2, the top welding of subsider 2 has subsider top cap 3, the inner edge and the tower body outer wall of subsider top cap 3 weld mutually, the bottom plate center welding of subsider 2 has the subsider sleeve pipe 4 that upwards extends to the tower body inner chamber, it has steam inlet pipe 5 to peg graft in the subsider sleeve pipe 4, steam inlet pipe 5 and subsider sleeve pipe 4 and tower body 1 coaxial line, the welding of subsider sleeve pipe 4's upper end has expansion joint 4a, the upper end of expansion joint 4a welds mutually with the upper end outer wall of steam inlet pipe 5, the last port top of steam inlet.

Steam from the previous process equipment enters the inner cavity of the tower body from a steam inlet pipe 5, flows upwards on the whole cross section of the tower body 1 in a uniformly distributed mode through the guiding of a gas distributor 9, spraying media are sprayed out of the spraying units above to collect and cool the steam, mass transfer and heat exchange are achieved, and the washed steam is discharged from a tail gas outlet 1a at the top and serves as a clean heat source of the low-pressure concentration tank. The liquid phase carries solid particles to fall into the settling tank 2 for settling, the upper end of the settling tank sleeve 4 is sealed, the harmful gas in the tower body 1 can be prevented from leaking outwards, and the expansion joint 4a is arranged to adjust the deformation caused by expansion with heat and contraction with cold. The top of the settling tank 2 is sealed by a settling tank top cover 3, so that volatile media and pungent smell contained in the spraying water cannot overflow and disperse into the external space. The lower part of the tower body 1 is welded with the settling tank 2 into a whole through the settling tank top cover 3, four supports of the tower body 1 are omitted, the whole installation is convenient and fast to place, and meanwhile, the steam inlet pipe 5 is ensured to be accurately aligned with the tower body 1.

The bottom plate of the settling tank 2 is obliquely arranged, and the lowest part of the bottom plate of the settling tank is provided with a sewage outlet 2 c; one side of subsider 2 is pegged graft and is had filter screen 2a, and the bottom of filter screen 2a supports and leans on the higher department at the subsider bottom plate, and the upper portion of the subsider lateral wall relative with filter screen 2a is connected with overflow pipe 2b, is equipped with on the subsider top cap 3 to supply filter screen 2a to take out the washing door 3a of tearing open of inserting. A filter screen 2a is additionally arranged in the settling tank 2, so that solid materials in the liquid of the settling tank cannot run off along with the overflow pipe 2 b; the liquid is filtered by the filter screen 2a and then discharged from the overflow pipe 2 b; the filter screen 2a can be drawn out for cleaning by opening the dismounting and washing door 3a on the top cover 3 of the settling tank regularly, and the filter screen is still inserted into the original slot after being cleaned. The bottom plate of the settling tank is obliquely arranged and slopes to the sewage discharge outlet 2c, so that solid slag can be conveniently and periodically discharged.

The inner cavity of the tower body 1 is provided with two groups of spraying units, the spraying pipes 6 of each spraying unit respectively penetrate through the spraying sleeve 1b, the circumference of each spraying pipe 6 close to the outer end is respectively welded with a spraying pipe fixing flange 6a, each spraying pipe fixing flange 6a is fixedly connected with the flange of the spraying sleeve 1b, the outer end of each spraying pipe 6 is respectively provided with a spraying pipe connecting flange 6b, and the inner end of each spraying pipe 6 extends to the axis of the tower body 1 and is respectively screwed with a nozzle. Tear the connecting bolt of shower fixed flange 6a and spray sleeve flange open, can take out shower 6 from spray sleeve 1b together with the nozzle is whole, be convenient for install or change the nozzle, avoided shower 6 directly to pass the stress concentration of the welding seam department that tower body 1 brought, the nozzle is compared with the orifice, be convenient for spray liquid on the whole cross section of tower body 1, avoid steam to go upward the unloading area material of in-process, improve the entrapment of tower body 1, cooling efficiency.

Three groups of spraying units are arranged in the height direction of the tower body 1, and each spraying unit comprises an upper spraying pipe 6 and a lower spraying pipe 6. Six nozzles are provided, so that the spraying effect can be ensured.

And the tower body wall at the opposite side of each spraying unit is respectively provided with an access hand hole 1c. The spraying state of each nozzle is convenient to observe from the maintenance hand hole 1c, whether the blockage occurs is judged, and the nozzle can be directly replaced or cleaned through the maintenance hand hole 1c.

The lower part of each spraying unit is respectively provided with a random packing layer 7, each random packing layer 7 is respectively supported on a grid plate 8, and the side wall of the tower body corresponding to the random packing layer 7 is respectively provided with a discharging hand hole 1d. Loose packing such as pall rings and the like can be filled through the upper maintenance hand hole 1c, when the packing is replaced, the discharge hand hole 1d can be opened, the pall rings can be directly taken out, and a flange does not need to be removed to disassemble the tower section; meanwhile, a flange does not need to be arranged on the tower body for replacing the filler, leakage points are reduced, and the workload during installation and maintenance is greatly reduced.

The side wall of the settling tank 2 is symmetrically provided with four settling tank supports 2d. The four settling tank supports 2d can support the settling tank and the tower body, so that four lug seats on the tower body are omitted, and the installation is more convenient and faster.

The above is only a preferred and feasible embodiment of the present invention, and the protection scope of the present invention is not limited thereby. In addition to the above embodiments, the present invention can also have other embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope of the present invention. The undescribed technical features of the present invention can be realized by or using the prior art, and are not described herein again.

Claims

1. The utility model provides a nylon reactor spray column, includes the tower body, the top of tower body is equipped with the tail gas outlet, the tower body inner chamber is equipped with sprays unit, its characterized in that: the lower extreme submergence of tower body is in the subsider, the top welding of subsider has the subsider top cap, the inner edge and the tower body outer wall of subsider top cap weld mutually, the welding of the bottom plate center of subsider has the subsider sleeve pipe that upwards extends to the tower body inner chamber, the grafting has the steam inlet pipe in the subsider sleeve pipe, steam inlet pipe and subsider sleeve pipe with the tower body coaxial line, the welding of subsider sheathed tube upper end has the expansion joint, the upper end of expansion joint with the upper end outer wall of steam inlet pipe welds mutually, the last port top of steam inlet pipe is equipped with gas distributor.

2. The nylon reactor spray tower of claim 1, wherein: the bottom plate slope of subsider sets up, one side of subsider is pegged graft and is had the filter screen, the bottom of filter screen supports and leans on the higher department of subsider bottom plate, and the upper portion of the subsider lateral wall relative with the filter screen is connected with the overflow pipe, be equipped with on the subsider top cover and supply the filter screen to take out the door of washing of tearing open of inserting, the lower of subsider bottom plate is equipped with the drain.

3. The nylon reactor spray tower of claim 1, wherein: the tower body inner chamber is equipped with two sets ofly spray the unit, and each spray the shower of unit passes respectively from spray set, and each shower has welded respectively on being close to the circumference of outer end shower fixed flange, and each shower fixed flange and spray set's flange fixed connection, the outer end of each shower is equipped with shower flange respectively, and the interior end of each shower extends to the axis department of tower body and has connect the nozzle soon respectively.

4. The nylon reactor spray tower of claim 3, wherein: the spraying units are provided with three groups in the height direction of the tower body, and each spraying unit comprises an upper spraying pipe and a lower spraying pipe.

5. The nylon reactor spray tower of claim 4, wherein: and the tower body wall at the opposite side of each spraying unit is respectively provided with an access hand hole.

6. The nylon reactor spray tower of claim 5, wherein: the lower part of each spraying unit is respectively provided with a random packing layer, each random packing layer is respectively supported on a grid plate, and the side wall of the tower body corresponding to the random packing layer is respectively provided with a discharging hand hole.

7. The nylon reactor spray tower of any one of claims 1-6, wherein: and four settling tank supports are symmetrically arranged on the side wall of the settling tank.