CN217449005U - NMP tail gas treatment tower - Google Patents
NMP tail gas treatment tower Download PDFInfo
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- CN217449005U CN217449005U CN202220797855.1U CN202220797855U CN217449005U CN 217449005 U CN217449005 U CN 217449005U CN 202220797855 U CN202220797855 U CN 202220797855U CN 217449005 U CN217449005 U CN 217449005U
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- tail gas
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Abstract
The utility model discloses an NMP tail gas treatment tower, which comprises a tower body and a demisting and whitening device; the mist and white removing device comprises a heat exchange fin group and a heat transfer conduit; the heat exchange fin group comprises a plurality of fin units, the thickness of each fin unit increases progressively from outside to inside along the radial direction, and a narrowing air flow channel is formed between every two adjacent fin units; the two heat exchange fin components are arranged at two ends of the heat transfer conduit; the tower body is provided with a mounting hole; each mist and white remover is arranged at the mounting hole through a heat transfer conduit, and a pair of heat exchange fin components are positioned in the tower body and outside the tower body. The low temperature is obtained through the heat exchange fin group outside the tower body and is transmitted to the heat exchange fin group inside the tower body through the heat transfer pipe, and the tail gas exchanges heat with the heat exchange fin group of the tower body when the tower body circulates, so that the purposes of cooling and whitening are achieved. And through the air runner that gradually narrows, can improve the condensation effect. The structure is simple, the cooling and whitening can be realized by better utilizing the low temperature of the environment, no extra energy consumption equipment is needed, the production cost is reduced, and the environmental protection is facilitated.
Description
Technical Field
The utility model belongs to the technical field of the NMP tail gas treatment, especially, relate to a NMP tail gas treatment tower.
Background
N-methyl pyrrolidone (NMP) tail gas absorption tower utilizes the characteristic that NMP and water are mutually soluble to recover NMP, so a large amount of pure water is needed for rinsing, the moisture content in the air of the absorption tower is high, and the tail gas temperature is between 30 ℃ and 50 ℃, so the NMP and the water are dissolved to release heat and increase the temperature. The temperature of tail gas discharged by the absorption tower is far higher than that of the outside, and especially in winter, white fog is generated to influence the environment.
In order to achieve the effect of white elimination, the existing treatment tower needs to perform complex treatment on a tower body, and other energy equipment needs to be used, so that the structure is complex and the energy consumption is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simple structure just need not the NMP tail gas treatment tower of extra energy consumption equipment.
The utility model provides an NMP tail gas treatment tower, which comprises a tower body and a demisting and whitening device;
the mist and white removing device comprises a heat exchange fin group and a heat transfer conduit; the heat exchange fin group comprises a plurality of fin units, the thickness of each fin unit increases progressively from outside to inside along the radial direction, and a narrowing air flow channel is formed between every two adjacent fin units; the two heat exchange fin components are arranged at two ends of the heat transfer conduit;
the tower body is provided with a mounting hole; each mist and white remover is arranged at the mounting hole through a heat transfer conduit, and a pair of heat exchange fin components are positioned in the tower body and outside the tower body.
In a specific embodiment, the tower further comprises a fixed seat, wherein the fixed seat comprises a positioning opening penetrating along the axial direction, the fixed seat is arranged outside the tower body, and the mist eliminator penetrates through the fixed seat through a heat transfer conduit of the mist eliminator.
The inner end of the positioning port is a bell mouth; the fixed seat is fixed outside the tower body through the horn mouth end of the fixed seat.
The fixed seat is an annular integral seat; or the fixing seat is a split type seat body and comprises a support and a limiting seat, the top surface of the support is provided with a lower arc-shaped groove, the bottom surface of the limiting seat is provided with an upper arc-shaped groove, the limiting seat is detachably connected to the support, and the lower arc-shaped groove and the upper arc-shaped groove are enclosed to form the positioning opening.
The tower body comprises a cylindrical section, a conical section and a tail gas outlet section; the large-diameter end of the conical section is connected to the cylindrical section, and the tail gas outlet section is connected to the small-diameter end of the conical section; the mounting hole is arranged on the cylindrical section.
The tower body further comprises a connecting flange, and the connecting flange is connected to the tail gas outlet section.
In one specific embodiment, in order to further improve the effect of defogging and whitening, a tower top defogger is also arranged; the tower top de-fogging and de-whitening device comprises a main pipe, a siphon pipe and a top cap; the main pipe comprises an exhaust runner and a cold air inlet, the exhaust runner penetrates through the main pipe along the axial direction, and the cold air inlet penetrates through the main pipe along the radial direction; the siphon pipe comprises a natural air passage which penetrates along the axial direction, the siphon pipe is obliquely arranged outside the main pipe, and the high end of the natural air passage is connected to the cold air inlet of the main pipe; the top cap is arranged at the top end of the main pipe; the tower top de-fogging and de-whitening device is connected to the connecting flange by a flange.
The utility model discloses a heat transfer fin group that is located outside the body of the tower asks for ambient temperature's low temperature to form gradually narrow air flow channel between adjacent two fin units, can increase gaseous velocity of flow and friction, improve the condensation effect. The heat exchange fin group outside the tower body transfers low temperature to the heat exchange fin group inside the tower body through the heat transfer pipe, and tail gas exchanges heat with the heat exchange fin group inside the tower body when circulating in the tower body, so that the purposes of temperature reduction and white elimination are achieved. The whole scheme has a simple structure, can well utilize the low temperature of the environment to realize cooling and whitening, does not need additional energy consumption equipment, and reduces the production cost and is favorable for environmental protection.
Drawings
Fig. 1 is a schematic view of a first preferred embodiment of the present invention in a use state.
FIG. 2 is a schematic enlarged view of a heat exchanging fin set according to a first preferred embodiment.
Fig. 3 is a schematic structural diagram of a second fixing seat in the preferred embodiment.
Fig. 4 is a schematic view of a third preferred embodiment of the present invention in use.
FIG. 5 is a schematic structural diagram of a top mist and white elimination device in the third preferred embodiment.
Reference numerals
1-a tower body, 11-a cylindrical section, 12-a conical section, 13-a tail gas outlet section and 14-a connecting flange;
2, a fixed seat;
3-demisting and white-removing device, 31-heat exchange fin group, 311-fin unit, 312-air flow channel, 32-heat transfer conduit;
02-a fixed seat II, 021-a support and 022-a limiting seat;
a, a tower top defogging and whitening device;
a1 — main tube;
a2-siphon, A21-straight line segment, A22-reducer segment;
a3 — top hat;
a4-mounting flange;
a5-support angle steel;
a6 — baffle.
Detailed Description
First, as shown in fig. 1, the NMP tail gas treatment tower disclosed in this embodiment includes a tower body 1, a fixing seat 2, and a defogging and whitening device 3.
The tower body 1 in this embodiment comprises a cylindrical section 11, a conical section 12, a tail gas outlet section 13 and a connecting flange 14. The wall of the cylinder section 11 is provided with a mounting hole for mounting the mist and white remover 3. The conical section 12 is connected with its large diameter end to the cylindrical section 11, the tail gas outlet section 13 is connected with the small diameter end of the conical section, and the connecting flange 14 is connected with the tail gas outlet section 13. The fog and white removing device 3 is arranged at the position of the mounting hole and supported and limited by the fixing seat 2.
The fixing seat 2 is an annular integral seat and comprises a positioning opening which penetrates through along the axial direction, and the inner end of the positioning opening is a horn mouth so as to improve the installation convenience of the defogging and whitening device 3. The fixing seat 2 is fixed outside the mounting hole of the tower body 1 by the horn mouth end, and the positioning opening and the mounting hole are coaxial.
The mist eliminator 3 includes a heat exchange fin group 31 and a heat transfer duct 32. The heat exchanging fin set 31 includes a plurality of fin units 311, as shown in fig. 2, the thickness of the fin units 311 increases from outside to inside in the radial direction, and a narrowing air flow passage 312 is formed between two adjacent fin units; the two heat exchange fin components are arranged at two ends of the heat transfer conduit; when the device is installed, the mist and white removing device 3 is installed at the installation hole through the heat transfer conduit 32, and the pair of heat exchange fin groups 31 are respectively positioned in the tower body and outside the tower body.
This embodiment puts into operation the back and asks for ambient temperature's low temperature through the heat transfer fin group that is located outside the body of the tower to form the air runner that gradually narrows between with adjacent two fin units, can increase gaseous velocity of flow and friction, improve the condensation effect. The heat exchange fin group outside the tower body transfers low temperature to the heat exchange fin group inside the tower body through the heat transfer pipe, and tail gas exchanges heat with the heat exchange fin group inside the tower body when circulating in the tower body, so that the purposes of temperature reduction and white elimination are achieved. The whole scheme has a simple structure, can well utilize the low temperature of the environment to realize cooling and whitening, does not need additional energy consumption equipment, and reduces the production cost and is favorable for environmental protection.
Second preferred embodiment, as shown in fig. 3, in order to further improve the convenience of removing the installation of fog and white ware 3, this embodiment sets up fixing base II 02 into split type pedestal, including support 021 and spacing seat 022, the top surface of support is equipped with down the arc wall, the bottom surface of spacing seat is equipped with the arc wall, during the installation, can install support 021 under the mounting hole of body 1 earlier, then pack into except that fog and white ware 3, install spacing seat 022 outside the body again, detain on heat transfer pipe 32, and spacing seat 022 can be dismantled with support 021 and be connected, support 021 encloses into the locating hole by lower arc wall and last arc wall when installing with spacing post 022. The support and the limit of the demisting and white elimination device 3 are realized.
In a third preferred embodiment, as shown in fig. 4, a tower top mist and white eliminator a is added to the first preferred embodiment to improve the mist and white eliminating effect.
As shown in fig. 5, the tower top de-misting and de-whitening device a comprises a main pipe a1, a siphon pipe a2 and a top cap A3; the siphon tube A2 is obliquely arranged outside the main tube A1, and the top cap A3 is arranged at the top end of the main tube A1.
The main pipe A1 is a cylindrical pipe, the bottom end of the main pipe is provided with a mounting flange A4 for mounting, the outside of the pipe wall of the top end of the main pipe is uniformly provided with a plurality of supporting angle steels A5 for mounting a top cap A3, the axial central through hole of the main pipe is an exhaust gas flow passage, the pipe wall of the main pipe is provided with a through hole as a cold air inlet, and the cold air inlet is used for receiving external air sucked from a siphon pipe A2.
The siphon A2 comprises a straight line segment A21 and a reducer segment A22, wherein the diameter of the reducer segment is gradually reduced from bottom to top; a plurality of siphon tubes A2 are uniformly arranged outside the main tube A1, and the siphon tube A2 is communicated with the cold air inlet on the main tube A1 by the small-diameter end of the variable-diameter section A22. And a guide plate A6 is arranged at the cold air inlet to prevent the condensed water generated in the main pipe from leaking. To ensure the shielding effect of the air guide, the guide plate a6 is inclined with its lower end facing the axial center of the main pipe a1, and the guide plate a6 is sized to be larger than the cold air inlet to ensure that its upper end is higher than the top of the cold air inlet and its lower end is lower than the bottom of the cold air inlet.
In the embodiment, the top cap A3 is mainly used for preventing rainwater from entering, so the top cap A3 is designed into a conical cap, and the diameter of the bottom surface of the conical cap is larger than the outer diameter of the main pipe A1; the top cap A3 is mounted on the support angle A5 with the inner surface of the side wall; the exhaust gas is discharged from the gap between the top hat A3 and the main pipe a 1.
When the tower top de-fogging and de-whitening device A is put into use, the tower top de-fogging and de-whitening device A is assembled on the connecting flange 14 through the mounting flange A4, high-temperature tail gas enters the main pipe A1 from top to bottom, negative pressure can be formed at the communication position of the siphon pipe A2 and the main pipe A1 due to the fact that the high-temperature tail gas has a certain flow speed, under the action of the negative pressure, external air enters the main pipe from the cold air inlet along the siphon pipe A2, the external air and the high-temperature tail gas exchange heat in the main pipe, the temperature of the high-temperature tail gas is reduced, and the purpose of de-fogging and de-whitening is achieved. The fog and white removal can be realized, and simultaneously, the condensed pure water can be relatively uniformly recovered along the main pipe A1 and the guide plate A6, so that the resource utilization rate is improved.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The NMP tail gas treatment tower comprises a tower body and is characterized in that: also comprises a fog and white remover;
the mist and white removing device comprises a heat exchange fin group and a heat transfer conduit; the heat exchange fin group comprises a plurality of fin units, the thickness of each fin unit increases progressively from outside to inside along the radial direction, and a narrowing air flow channel is formed between every two adjacent fin units; the two heat exchange fin components are arranged at two ends of the heat transfer conduit;
the tower body is provided with a mounting hole; each mist and white removing device is arranged at the mounting hole through a heat transfer conduit, and a pair of heat exchange fin components are positioned in the tower body and outside the tower body.
2. The NMP tail gas treatment column of claim 1, wherein: the tower body is provided with a tower body, and the tower body is provided with a mist eliminator and a heat transfer conduit.
3. The NMP tail gas treatment column of claim 2, wherein: the inner end of the positioning port is a bell mouth; the fixed seat is fixed outside the tower body through the horn mouth end of the fixed seat.
4. The NMP tail gas treatment column of claim 2, wherein: the fixed seat is an annular integral seat; or the fixing seat is a split type seat body and comprises a support and a limiting seat, the top surface of the support is provided with a lower arc-shaped groove, the bottom surface of the limiting seat is provided with an upper arc-shaped groove, the limiting seat is detachably connected to the support, and the lower arc-shaped groove and the upper arc-shaped groove are enclosed to form the positioning opening.
5. The NMP tail gas treatment column of claim 1, wherein: the tower body comprises a cylindrical section, a conical section and a tail gas outlet section; the large-diameter end of the conical section is connected to the cylindrical section, and the tail gas outlet section is connected to the small-diameter end of the conical section; the mounting hole is arranged on the cylindrical section.
6. The NMP tail gas treatment tower of claim 5, wherein: the tower body further comprises a connecting flange, and the connecting flange is connected to the tail gas outlet section.
7. The NMP tail gas treatment tower of claim 6, wherein: also comprises a tower top de-fogging and de-whitening device; the tower top de-fogging and de-whitening device comprises a main pipe, a siphon pipe and a top cap; the main pipe comprises an exhaust runner and a cold air inlet, the exhaust runner penetrates through the main pipe along the axial direction, and the cold air inlet penetrates through the main pipe along the radial direction; the siphon pipe comprises a natural air passage which penetrates along the axial direction, the siphon pipe is obliquely arranged outside the main pipe, and the high end of the natural air passage is connected to the cold air inlet of the main pipe; the top cap is arranged at the top end of the main pipe; the tower top de-fogging and de-whitening device is connected to the connecting flange by a flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220797855.1U CN217449005U (en) | 2022-04-07 | 2022-04-07 | NMP tail gas treatment tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220797855.1U CN217449005U (en) | 2022-04-07 | 2022-04-07 | NMP tail gas treatment tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217449005U true CN217449005U (en) | 2022-09-20 |
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ID=83267690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220797855.1U Active CN217449005U (en) | 2022-04-07 | 2022-04-07 | NMP tail gas treatment tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217449005U (en) |
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2022
- 2022-04-07 CN CN202220797855.1U patent/CN217449005U/en active Active
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