CN214218238U - Deamination tower - Google Patents
Deamination tower Download PDFInfo
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- CN214218238U CN214218238U CN202022571539.6U CN202022571539U CN214218238U CN 214218238 U CN214218238 U CN 214218238U CN 202022571539 U CN202022571539 U CN 202022571539U CN 214218238 U CN214218238 U CN 214218238U
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Abstract
The utility model discloses a deamination tower, which comprises a tower body upper part and a tower body lower part which are connected up and down; a steam outlet pipe is arranged at the top of the upper part of the tower body; a liquid baffle plate is arranged at the joint of the upper part of the tower body and the steam outlet pipe; the upper part of the tower body is provided with a raw water inlet; a plurality of layers of sieve plate trays are connected from top to bottom in the upper part of the tower body below the raw water inlet; an upper circulating pipe joint is arranged on the side wall of the lower part of the tower body; the bottom of the lower part of the tower body is provided with a lower circulating pipe interface and a discharge hole; and a vortex-preventing baffle is arranged at the joint of the lower part of the tower body and the lower circulating pipe. The vacuum evaporation treatment method has the advantages of wide material application range, high forced circulation heat transfer coefficient, good gas-liquid separation effect, compact equipment, small occupied area and high production automation degree. The production capacity of the deamination nitrogen is increased, the tower efficiency is more stable, the adaptive liquid-gas ratio range is large, the allowable liquid holdup is large, and the advantages can better meet the continuous harmless treatment of the petrochemical industrial wastewater.
Description
Technical Field
The utility model belongs to the technical field of the environmental protection equipment technique and specifically relates to a deamination tower is related to.
Background
The existing device for removing ammonia nitrogen in sewage is mainly an ammonia nitrogen stripping tower, and adopts a gas-liquid contact device in the structure, and fillers are filled in the tower, so that the contact area is increased. The sewage with the PH value adjusted is sprinkled on the filler from the upper part of the tower to form water drops which fall along the clearance of the filler and are in countercurrent contact with the air blown upwards from the bottom of the tower by the fan, so that the free ammonia dissolved in the water passes through a gas-liquid interface and is transferred to a gas phase, and the aim of removing the ammonia nitrogen is fulfilled.
The petrochemical industrial wastewater is low in sewage liquid load after pretreatment in the early stage, has scaling phenomenon, is not suitable for a stripping tower filled with fillers inside, and cannot meet the requirement of high operation elasticity in industrial production. When the diameter of the column is increased, the gas-liquid distribution is not uniform, the contact is poor, and the like, which tends to cause a decrease in the treatment efficiency. And the stripping tower has the defects of heavy weight, high manufacturing cost, complex cleaning and maintenance, large filler loss and the like, so that the use of the stripping tower in the environment-friendly treatment of high-salt petrochemical industrial wastewater is limited.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical defect who exists, the utility model aims to provide a contain the high salt petrochemical industry waste water innocent treatment who contains high ammonia nitrogen composition, the productivity effect increase of deamination nitrogen, tower efficiency is stable, the liquid-gas ratio scope of adaptation big deamination tower.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
the technical scheme is that the deamination tower comprises an upper part and a lower part which are connected up and down; a steam outlet pipe is arranged at the top of the upper part of the tower body; a liquid baffle plate is arranged at the joint of the upper part of the tower body and the steam outlet pipe; the upper part of the tower body is provided with a raw water inlet; a plurality of layers of sieve plate trays are connected from top to bottom in the upper part of the tower body below the raw water inlet; the single-layer sieve plate tower tray comprises a liquid receiving tray, a tower tray plate and a down-flow plate which are detachably connected in sequence; a liquid seal disc is arranged at the outlet of a down-flow plate in the tray of the sieve plate at the lowest layer; an upper circulating pipe joint is arranged on the side wall of the lower part of the tower body; the bottom of the lower part of the tower body is provided with a lower circulating pipe interface and a discharge hole; and a vortex-preventing baffle is arranged at the joint of the lower part of the tower body and the lower circulating pipe.
Preferably, the upper part of the tower body is detachably connected with the lower part of the tower body through a flange.
Preferably, tower body upper portion sets up the lug, and the tower body lower part sets up the support, supports the deamination tower.
Preferably, the side walls of the upper part and the lower part of the tower body are respectively provided with a pressure interface and a thermometer interface.
Preferably, the liquid receiving disc is a flat liquid receiving disc; the down-flow plate is a vertical liquid plate. Is fixed on the supporting ring at the upper part of the tower body by welding. The down-flow plate is in the form of a vertical down-flow plate, is connected with a down-flow plate connecting plate, and adopts detachable connection in connection between the down-flow plates, and the size of each block can enable the down-flow plate to smoothly pass through a manhole.
Preferably, the tray plate is provided with an inlet weir and an outlet weir in sequence along the water flow direction.
Preferably, the height of the inlet weir is not less than 100 mm; the outlet weir is an adjustable tooth-shaped weir, and the height of the outlet weir is not less than 50 mm.
Preferably, a plurality of access holes are formed in the upper part of the tower body; and channel plates are detachably connected to the side edges of the tower tray plates on each layer.
Compared with the prior art, the beneficial effects of the utility model are that:
1. introducing a vacuum evaporation process to treat the petrochemical industrial wastewater. The vacuum evaporation is fully utilized to process materials, the application range is wide, the forced circulation heat transfer coefficient is high, the gas-liquid separation effect is good, the equipment is compact, the occupied area is small, and the production automation degree is high.
2. The production capacity of the deamination nitrogen is increased, the tower efficiency is stable, the adaptive liquid-gas ratio range is large, the allowable liquid holdup is large, the continuous harmless treatment of the petrochemical industrial wastewater can be better met, and the ammonia nitrogen content of the treated wastewater can reach less than or equal to 10 mg/l.
3. The installation and maintenance are easy, the equipment weight is light, and the engineering construction investment is low.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic view of the main structure of the present invention.
Fig. 2 is a schematic structural view of the upper part of the tower body.
Fig. 3 is a schematic structural diagram of the middle sieve tray of the present invention.
Fig. 4 is a schematic top view of fig. 3.
The labels in the figure are:
the device comprises a tower body upper part 1, a tower body lower part 2, a steam outlet pipe 3, a liquid baffle plate 4, a raw water inlet 5, a liquid receiving disc 6, a tower disc plate 7, a down-flow plate 8, a liquid sealing disc 9, an upper circulating pipe interface 10, a lower circulating pipe interface 11, a discharge hole 12, a vortex-proof baffle 13, a flange 14, a lifting lug 15, a support 16, a pressure and thermometer interface 17, an inlet weir 18, an outlet weir 19, an access hole 20 and a channel plate 21.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the embodiment, as shown in fig. 1-4, the utility model discloses a deamination tower, which comprises a tower body upper part 1 and a tower body lower part 2 which are connected up and down; a steam outlet pipe 3 is arranged at the top of the upper part 1 of the tower body; a liquid baffle plate 4 is arranged at the joint of the upper part 1 of the tower body and the steam outlet pipe 3; the upper part 1 of the tower body is provided with a raw water inlet 5; a plurality of layers of sieve plate trays are connected and arranged in the upper part 1 of the tower body below the raw water inlet 5 from top to bottom; the single-layer sieve plate tower tray comprises a liquid receiving tray 6, a tower tray plate 7 and a down-flow plate 8 which are detachably connected in sequence; a liquid seal disc 9 is arranged at an outlet of a down-flow plate 8 in the tray of the sieve plate at the lowest layer; an upper circulating pipe interface 10 is arranged on the side wall of the lower part 2 of the tower body; the bottom of the lower part 2 of the tower body is provided with a lower circulating pipe interface 11 and a discharge hole 12; and a vortex-preventing baffle 13 is arranged at the joint of the lower part 2 of the tower body and the lower circulating pipe 11.
The upper part 1 of the tower body is detachably connected with the lower part 2 of the tower body through a flange 14.
Tower body upper portion 1 sets up lug 15, and tower body lower part 2 sets up support 16, supports the deamination tower.
And the side walls of the upper part 1 and the lower part 2 of the tower body are respectively provided with a pressure interface 17 and a thermometer interface 17.
The liquid receiving disc 6 is a flat liquid receiving disc and is fixed on a support ring at the upper part of the tower body through welding; the down-flow plate 8 is a vertical liquid plate.
An inlet weir 18 and an outlet weir 19 are sequentially arranged on the tray plate 7 along the water flow direction.
The height of the inlet weir 18 is not less than 100 mm; the outlet weir 19 is an adjustable tooth-shaped weir, and the height of the outlet weir is not less than 50 mm.
A plurality of access holes 20 are formed in the upper part 1 of the tower body; and channel plates 21 are detachably connected and arranged on the side edges of the tower tray plates 7 on each layer.
Petrochemical industry waste water gets into the deamination tower from top to bottom through raw water inlet 5, drenches the liquid receiving plate 6 of first layer tower tray, crosses entry weir 18, and the crossing current is crossed the tower tray board 7 that is covered with the sieve mesh, and when the liquid level exceeded 19 height of export weir on the board, by the liquid falling board 8 water conservancy diversion to the liquid receiving plate 7 of next layer tower tray to this order flows through each tower tray, and the liquid seal dish 9 that flows through at last utilizes the sealed heating gas of liquid seal dish 9 business turn over mouth liquid level difference. The liquid flowing out from the liquid seal disc 9 descends to the lower part 2 of the tower body, and is pumped into an external forced heating device by a circulating pump on a lower circulating pipe through a lower circulating pipe connector 11, and the heated liquid enters the lower part 2 of the tower body through an upper circulating pipe connector 10. Saturated steam generated by heating liquid passes through each tray plate 7 from bottom to top, and the ammonia nitrogen removal process is completed in the area of the tray plate 7 which is fully covered with the sieve holes. The steam after heating is discharged from a steam outlet pipe 3 at the top of the tower after most liquid drops are removed by a liquid baffle plate 4, and qualified raw water is discharged from a discharge hole 12 at the lower part 2 of the tower body.
According to the characteristics of petrochemical industrial wastewater, the ammonia nitrogen is removed by pretreatment and a deamination tower at the early stage, and then the vacuum evaporation process is carried out, so that the application of the vacuum evaporation process in the field of environmental protection is developed. The deamination tower creatively adopts a plate tower structure. The tray type (such as sieve tray, tongue tray, etc.), sieve size, hole center distance, opening rate, tray plate number, etc. are determined by the characteristics of petrochemical industrial wastewater, and a practical foundation is laid for later equipment upgrading. The liquid seal at the outlet of the downcomer adopts a liquid seal disc structure. An arch-shaped sealing plate is arranged at the arch-shaped downcomer of the tray at the lowest layer, a pipeline for draining liquid downwards is welded on the sealing plate, and the pipeline is inserted into the liquid level at the lower part of the tower body and is sealed.
The technology is suitable for the 'environmental protection' technical industry, and aims to solve the problem of serious environmental pollution caused by the fact that high-salt-content petrochemical industrial wastewater containing high-ammonia nitrogen components cannot be subjected to harmless treatment. The device treats ammonia nitrogen components in petrochemical industrial wastewater, and then enters a vacuum evaporation process device, so that the reclaimed water quality reaches the index of recycling cooling water quality in the water-saving emission reduction assessment index and reclaimed water quality control index of refining and chemical enterprises in the specification Q/SH0104-2007, and the influence on the environment is avoided, thereby solving a series of serious environmental pollution problems caused by high-salt-content petrochemical industrial wastewater.
The deammoniation tower is a plate tower, and the raw water flows out from the liquid receiving tray, flows across the whole tower tray and finally enters the downcomer to the next tower tray. The gas rises from the lower part of the tower and is subjected to mass transfer with the descending raw water on each layer of tray plate. According to present industrial waste water treatment capacity, deamination tower diameter generally exceeds DN1000mm, and for the convenience of installation, maintenance, washing, need adopt the type of construction of sectional type tray, detachable part generally includes: a tray plate, a down-flow plate, an overflow weir, etc. The tray plate is assembled on the supporting ring through a fastener which is disassembled on a single side and a fastener which is disassembled on a double side.
The sieve pores on the tower tray plate are arranged in a regular triangle, and the ratio of the center distance of the pores to the diameter of the sieve pores is 2.5-5, preferably 3-4. In order to prevent scaling, the aperture of the sieve pore can be larger, generally 8-10 mm, and the aperture ratio is about 7.5%.
The width of the tray plate needs to consider the structural strength, the symmetry and interchangeability of the holes on the tray and the smooth passing of the tray through the manhole. The channel plate is preferably designed into a connecting structure which can be detached from the top and the bottom, and the fastener of the channel plate adopts a double-sided detachable connecting piece. The tower tray plate, the down-flow plate and the liquid receiving tray can be designed into a connecting structure with a detachable single side, and the fastener of the connecting structure adopts a detachable single side connecting piece. The tray channel plate is part of a frequently dismantled section, preferably not more than 300N in weight. When the length of the tray plate is less than or equal to 1200mm, a channel plate needs to be arranged on each layer of tray; when the length of the tray plate is more than 1200mm, two channel plates are arranged on each layer of tray.
The liquid receiving disc is a flat liquid receiving disc and is fixed on the supporting ring through welding. The down-flow plate is in the form of a vertical down-flow plate, is connected with a down-flow plate connecting plate, and adopts detachable connection in connection between the down-flow plates, and the size of each block can enable the down-flow plate to smoothly pass through a manhole.
An inlet weir with the height not less than 100mm is arranged at the raw water inlet of each layer of tray, and the horizontal distance between the inlet weir and the upper down-flow plate is determined by ensuring that the liquid flow rate is not more than 0.3m/s or the flow rate determined by the process profession. An outlet weir is required to be arranged at the raw water outlet of each layer of the tower tray, the outlet weir adopts an adjustable tooth-shaped weir, and the height of the outlet weir is determined by the technical specialties and is generally not less than 50 mm.
A liquid seal disc is required to be arranged below the lowest-layer sieve plate tower tray. Ensuring the sealing of the downcomer of the tray at the bottommost layer.
In the process of treating the wastewater in the petrochemical field, due to the pretreatment process in the early stage, the entrainment amount of the material is greatly reduced, the foamability of the material is small, and the space requirements of flooding, installation and maintenance are mainly considered in the tower tray spacing.
Design, manufacture, inspection and acceptance standards of the deamination tower meet the specification requirements of tower container NB/T47041, pressure container welding regulation NB/T47015 and steel chemical container manufacturing technical requirement HG/T20584.
When the tower body material is austenitic stainless steel, an intercrystalline corrosion tendency experiment is carried out on the surface of the stainless steel and a welding joint, and the experiment requires that according to method E of Experimental method for intercrystalline corrosion of corrosive stainless steel of metals and alloys GB/T4334-2008, a metallographic method is used as an auxiliary qualification index for judging that no intercrystalline corrosion crack is generated on the outer side surface of a bent sample by the bending method.
The difference between the maximum diameter and the minimum diameter of the tower body bearing the internal pressure on the same cross section is less than or equal to 1 percent Di (Di is the internal diameter of the tower body with the cross section, mm, the same below), and is not more than 25 mm. When the internal diameter of the tower body is more than 500mm and less than or equal to 1000mm, the straightness accuracy of the tower body is allowed to deviate: plus or minus 2.5 mm; when the tower body is more than 1000mm and less than or equal to 2000mm, the straightness accuracy of the tower body is allowed to deviate: 5 mm. The straightness tolerance of the tower body with any 3000mm length is not more than 3 mm; when the length L of the tower body is less than or equal to 30000mm, the straightness tolerance of the tower body is not more than 1 per thousand of the length of the tower body. The vertical installation tolerance of the tower body is 1 per mill of the height of the tower body and is not more than 30 mm. The perpendicularity tolerance of the sealing surface of the connecting flange and the axis of the cylinder body is 1 mm.
The manufacture and installation of the tray are carried out according to the technical conditions of the tray JB/T1205. The nondestructive testing of the equipment is required to meet the specification requirements of 'pressure equipment nondestructive testing' NB/T47013.1-47013.6.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A deamination tower which is characterized in that: comprises an upper part and a lower part which are connected up and down; a steam outlet pipe is arranged at the top of the upper part of the tower body; a liquid baffle plate is arranged at the joint of the upper part of the tower body and the steam outlet pipe; the upper part of the tower body is provided with a raw water inlet; a plurality of layers of sieve plate trays are connected from top to bottom in the upper part of the tower body below the raw water inlet; the single-layer sieve plate tower tray comprises a liquid receiving tray, a tower tray plate and a down-flow plate which are detachably connected in sequence; a liquid seal disc is arranged at the outlet of a down-flow plate in the tray of the sieve plate at the lowest layer; an upper circulating pipe joint is arranged on the side wall of the lower part of the tower body; the bottom of the lower part of the tower body is provided with a lower circulating pipe interface and a discharge hole; and a vortex-preventing baffle is arranged at the joint of the lower part of the tower body and the lower circulating pipe.
2. A deamination tower according to claim 1, further comprising: the upper part of the tower body is detachably connected with the lower part of the tower body through a flange.
3. A deamination tower according to claim 2, wherein: the tower body upper portion sets up the lug, and the tower body lower part sets up the support, supports the deamination tower.
4. A deamination tower according to claim 1, further comprising: and the side walls of the upper part and the lower part of the tower body are respectively provided with a pressure interface and a thermometer interface.
5. A deamination tower according to claim 1, further comprising: the liquid receiving disc is a flat liquid receiving disc; the down-flow plate is a vertical liquid plate.
6. A deamination tower according to claim 1, further comprising: and the tray plate is sequentially provided with an inlet weir and an outlet weir along the water flow direction.
7. The ammonia removal tower of claim 6, wherein: the height of the inlet weir is not less than 100 mm; the outlet weir is an adjustable tooth-shaped weir, and the height of the outlet weir is not less than 50 mm.
8. A deamination tower according to claim 1, further comprising: a plurality of access holes are formed in the upper part of the tower body; and channel plates are detachably connected to the side edges of the tower tray plates on each layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022571539.6U CN214218238U (en) | 2020-11-10 | 2020-11-10 | Deamination tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022571539.6U CN214218238U (en) | 2020-11-10 | 2020-11-10 | Deamination tower |
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| Publication Number | Publication Date |
|---|---|
| CN214218238U true CN214218238U (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022571539.6U Active CN214218238U (en) | 2020-11-10 | 2020-11-10 | Deamination tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115465909A (en) * | 2022-09-28 | 2022-12-13 | 滁州职业技术学院 | Reactor for sewage denitrification treatment |
-
2020
- 2020-11-10 CN CN202022571539.6U patent/CN214218238U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115465909A (en) * | 2022-09-28 | 2022-12-13 | 滁州职业技术学院 | Reactor for sewage denitrification treatment |
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