CN114682054A - Melamine urea washing tower - Google Patents

Melamine urea washing tower Download PDF

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Publication number
CN114682054A
CN114682054A CN202210340179.XA CN202210340179A CN114682054A CN 114682054 A CN114682054 A CN 114682054A CN 202210340179 A CN202210340179 A CN 202210340179A CN 114682054 A CN114682054 A CN 114682054A
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CN
China
Prior art keywords
washing tower
urine
urine washing
screw rod
buffer plate
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202210340179.XA
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Chinese (zh)
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CN114682054B (en
Inventor
李齐海
周耀勇
王啸臣
张磊
张鹏
王军
黄卓
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Xinjiang Jinjiang Chemical Co.,Ltd.
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Kuitun Jinjiang Chemical Industry Co ltd
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Priority to CN202210340179.XA priority Critical patent/CN114682054B/en
Publication of CN114682054A publication Critical patent/CN114682054A/en
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Publication of CN114682054B publication Critical patent/CN114682054B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/18—Absorbing units; Liquid distributors therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1487—Removing organic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1493—Selection of liquid materials for use as absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/18—Absorbing units; Liquid distributors therefor
    • B01D53/185—Liquid distributors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20—Organic absorbents
    • B01D2252/205—Other organic compounds not covered by B01D2252/00 - B01D2252/20494
    • B01D2252/2053—Other nitrogen compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/408—Cyanides, e.g. hydrogen cyanide (HCH)

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treating Waste Gases (AREA)

Abstract

This scheme belongs to the urine and washes the tower field, concretely relates to melamine urea washing tower, including urine washing tower body, circulating pump, circulating pipe and intake pipe, the import and the export of circulating pipe set up respectively in the top and the bottom of urine washing tower body, and circulating pipe and circulating pump intercommunication, the intake pipe sets up at the top of circulating pump, its characterized in that: the urine washing tower is characterized by further comprising an anti-corrosion mechanism, wherein the anti-corrosion mechanism comprises a buffer plate, a spray head and a screw rod, the screw rod is rotatably arranged in the urine washing tower, the buffer plate is a fan blade with at least two blades, and the buffer plate and the screw rod are coaxially fixed; the shower nozzle is equipped with two, and the shower nozzle communicates with the export of circulating pipe, and the position of shower nozzle and buffer board correspond the setting. Compare with traditional urine washing tower, this scheme is through setting up the anticorrosion mechanism, need not under other extra power, can reduce the direct washing away that the heat exchange tube received effectively, and then has reduced the corruption of heat exchange tube, has increased its life.

Description

Melamine urea washing tower
Technical Field
This scheme belongs to the urea scrubbing tower field, concretely relates to melamine urea scrubbing tower.
Background
In the production process of melamine, a urea washing tower (called urea washing tower for short) is a main device, and is mainly used for washing process gas from a cold air fan by using circulating liquid urea, absorbing solid impurities such as melamine, byproducts and the like in the process gas, achieving the aim of purifying the gas, and reducing the temperature of the gas so as to recycle and produce low-pressure steam as a byproduct. The specific working process is as follows: the process gas from the top of the urea washing tower is mixed with the circulating liquid urine sprayed by the liquid urine spray head on the upper part of the heat exchange tube bundle of the urea washing tower and flows down, the process gas and the circulating liquid urine in the heat exchange tube bundle exchange heat through the outer side of the heat exchange tube bundle to cool, the water absorbs heat to become steam, the steam goes to a low-pressure steam pipe network, and the process gas is purified and cooled and then goes to a compression post for recycling.
In the actual use process, the heat exchange tube in the urine washing tower is easily eroded and corroded to further cause leakage, and the heat exchange tube bundle needs to be replaced, so that great economic loss is caused. Therefore, a urine scrubber capable of reducing corrosion of the heat exchange tube is urgently needed.
Disclosure of Invention
The scheme provides a melamine urea washing tower to reduce corrosion of a heat exchange pipe.
In order to achieve the purpose, the scheme provides a melamine urea washing tower which comprises a urea washing tower body, a circulating pump, a circulating pipe and an air inlet pipe, wherein an inlet and an outlet of the circulating pipe are respectively arranged at the top and the bottom of the urea washing tower body, the circulating pipe is communicated with the circulating pump, the air inlet pipe is arranged at the top of the circulating pump, the melamine urea washing tower further comprises an anti-corrosion mechanism, the anti-corrosion mechanism comprises a buffer plate, a spray head and a screw rod, the screw rod is rotatably arranged in the urea washing tower, the buffer plate is a fan blade with at least two blades, and the buffer plate and the screw rod are coaxially fixed; the shower nozzle is equipped with two, and the shower nozzle communicates with the export of circulating pipe, and the position of shower nozzle and buffer board correspond the setting.
The principle and the beneficial effect of the scheme are that: the circulating pump is started, circulating urine at the bottom of the urine washing tower is pumped to the top, one nozzle is opened, the circulating urine is sprayed out and mixed with process gas from the top of the urine washing tower to flow downwards, the circulating urine firstly impacts the buffer plate to push the buffer plate to rotate, and then enters the bottom of the urine washing tower through structures such as a heat exchange pipe and the like; after a certain time, the sprayer is closed, and the other sprayer is started, so that the buffer plate can reversely rotate, and the operation is circulated.
The anti-corrosion mechanism is arranged, on one hand, the force of urine sprayed by the spray head is converted into the rotating force of the buffer plate, so that the buffer plate is not easily damaged by impact force; on the other hand, because the buffer board rotates through the lead screw and connects, the buffer board still can have the displacement when rotating like this, can effectively avoid the shower nozzle old to strike same place and then reduce the life of buffer board. Moreover, the setting of two shower nozzles can also make each face of buffer board can both be even by the impact to, has further increased the life of buffer board. Compare with traditional urine washing tower, this scheme is through setting up the anticorrosion mechanism, need not under other extra power, can reduce the direct washing away that the heat exchange tube received effectively, and then has reduced the corruption of heat exchange tube, has increased its life.
Furthermore, a trigger unit is arranged on the side wall of the urine washing tower body, the trigger unit comprises an accommodating cavity arranged in the side wall of the urine washing tower body, a trigger block and a trigger switch for controlling the spray head are arranged in the accommodating cavity, and the trigger block is fixed on the screw rod; the number of the trigger units is two, and the trigger units are symmetrically arranged along the axis of the urine washing tower body. Therefore, when the screw rod moves to a set position, the trigger block is contacted with the trigger switch to control one spray head to be opened and the other spray head to be closed, automatic forward and backward rotation is realized, manual control is not needed, and the cost is lower.
Further, the containing cavity is also internally provided with waterproof rubber. The influence of urine on the switch can be effectively reduced.
Further, the bottom of the accommodating cavity is obliquely arranged towards the center of the urine washing tower. Urine can be effectively prevented from entering the accommodating cavity.
Furthermore, a grating plate is further arranged in the urine washing tower and is positioned below the anti-corrosion mechanism. The arrangement of the grating plates can further relieve the impact force on the heat exchange tube and effectively prolong the service life of the heat exchange tube.
Further, the blades of the fan blade are rectangular. Simple structure, low cost, easy manufacture and arc shape.
Furthermore, the blades and the screw rod of the fan blade are coated with anti-corrosion coatings. The corrosion-resistant coating can increase the corrosion resistance and prolong the service life of the coating.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the present invention;
FIG. 3 is an enlarged view of FIG. 2;
fig. 4 is a sectional view of the corrosion prevention mechanism in the embodiment of the invention.
Detailed Description
The following is further detailed by the specific embodiments:
reference numerals in the drawings of the specification include: the urine washing tower comprises a urine washing tower body 10, a circulating pump 20, a circulating pipe 30, an air inlet pipe 40, a heat exchange pipe 50, a grid plate 60, a buffer plate 71, a spray head 72 and a screw rod 73.
The embodiment is basically as shown in the attached figure 1:
the embodiment discloses a melamine urea washing tower, which mainly comprises a urea washing tower body 10, a circulating pump 20, a circulating pipe 30 and an air inlet pipe 40. The two ends of the circulating pipe 30 are respectively connected to the bottom and the top of the urine washing tower, and the circulating pump 20 is communicated with the circulating pipe 30 and is mainly used for pumping the urine at the bottom of the urine washing tower to the top of the urine washing tower. The gas inlet pipe 40 is communicated with the top of the urea washing tower and mainly used for feeding the process gas into the urea washing tower for purification.
The main body of the urine scrubber 10 still adopts the structure in the prior art, and the inside of the main body is provided with the heat exchange tube 50 and other mechanisms, which will not be described in too much detail here. The key point is to set aside a newly added anti-corrosion mechanism.
As shown in fig. 2, 3 and 4, two anti-corrosion mechanisms are arranged, are arranged in bilateral symmetry, are installed in the middle through a base, and only one anti-corrosion mechanism can be arranged according to actual needs, so that the two anti-corrosion mechanisms have the advantages that the buffer plate 71 receives larger force sprayed by the spray head, and is easier to rotate. Or under the condition that the buffer plate 71 can be rotated, the two anti-corrosion mechanisms are arranged to reduce the spraying force of the spray head 72, so that the impact force of the buffer plate 71 is reduced, and the service life of the buffer plate is prolonged.
The separate corrosion prevention mechanism mainly includes a buffer plate 71, a head 72, and a lead screw 73. Both ends all rotate the setting in the urine tower of washing about lead screw 73, and the base is run through to the centre, all is through threaded connection. The buffer plate 71 has three-bladed blades, and the buffer plate 71 is coaxially fixed with the screw rod 73. The blade is rectangular, the surface of the blade is coated with an anti-corrosion coating, other wearing parts such as a base and a screw rod 73 can also correspond to the spray head 72 to form the anti-corrosion coating, so that the service life of the blade is prolonged, the specific coating has no requirement, and the anti-corrosion effect can be achieved. Two spray heads 72 are provided, the spray heads 72 are communicated with the outlets of the circulation pipes 30, and the spray heads 72 are positioned to correspond to the buffer plate 71. The corresponding arrangement means that the nozzle 72 has a certain inclination angle, and it is required to ensure that only one blade is impacted when the nozzle 72 is started, and the blades are ensured to rotate. The two nozzles 72 have different angles, and the other nozzle 72 makes the buffer plate 71 rotate reversely, as shown in the figure.
In addition, in order to increase the intelligence of the apparatus, as shown in fig. 4, a trigger unit is provided on the side wall of the urine washing tower body 10. The trigger unit comprises a containing cavity arranged in the side wall of the urine washing tower body 10, and the containing cavity is arranged at the left and the right respectively and is symmetrically arranged along the axis of the urine washing tower body 10. A trigger block and a trigger switch for controlling the spray head 72 are arranged in the accommodating cavity. The trigger block is fixed on the screw rod 73; the number of the trigger units is two, so that after the screw rod 73 moves to a set position, the trigger block is contacted with the trigger switch to control one spray head to be opened and the other spray head to be closed, automatic forward and backward rotation is realized, manual control is not needed, and the cost is lower.
The holding cavity is also provided with waterproof rubber, and meanwhile, the holding cavity is inclined, so that urine is less prone to entering the holding cavity. A grating plate 60 is further arranged in the urine washing tower body 10, and the grating plate 60 is located below the anti-corrosion mechanism. The arrangement of the grating plates 60 can further relieve the impact force on the heat exchange tube 50, and can effectively prolong the service life of the heat exchange tube
When the circulating pump is used specifically, the circulating pump 20 is started, circulating urine at the bottom of the urine washing tower is pumped to the top, 2 nozzles are opened, the circulating urine is sprayed out and mixed with process gas from the top of the urine washing tower and then flows downwards, the circulating urine firstly impacts the buffer plate 71 to push the buffer plate 71 to rotate, and then enters the bottom of the urine washing tower through the structures such as the heat exchange pipe 50; when the screw rod 73 moves to the set position, the trigger block is contacted with the trigger switch to control one spray head to be opened and the other spray head to be closed, so that automatic forward and backward rotation is realized, the spray head is closed, the other two spray heads are started, and thus the buffer plate 71 can rotate reversely, and the process is circulated.
The anti-corrosion mechanism is arranged, on one hand, the force of urine sprayed by the spray head 72 is converted into the rotating force of the buffer plate 71, so that the buffer plate 71 is not easily damaged by impact force; on the other hand, because the buffer plate 71 is connected through the rotation of the screw rod 73, the buffer plate 71 can also have displacement when rotating, and the phenomenon that the spray head always impacts the same place and further reduces the service life of the buffer plate 71 can be effectively avoided. Moreover, due to the arrangement of the two spray heads, all surfaces of the buffer plate 71 can be impacted uniformly, and the service life of the buffer plate 71 is further prolonged. Compare with traditional urine washing tower, this scheme is through setting up the anticorrosion mechanism, need not under other extra power, can reduce the direct washing that heat exchange tube 50 received effectively, and then has reduced heat exchange tube 50's corruption, has increased its life.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several variations and modifications can be made, which should also be considered as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the utility of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (7)

1. The utility model provides a melamine urea scrubbing tower, includes urine washing tower body, circulating pump, circulating pipe and intake pipe, the import and the export of circulating pipe set up respectively in the top and the bottom of urine washing tower body, and circulating pipe and circulating pump intercommunication, the intake pipe sets up at the top of circulating pump, its characterized in that: the urine washing tower is characterized by further comprising an anti-corrosion mechanism, wherein the anti-corrosion mechanism comprises a buffer plate, a spray head and a screw rod, the screw rod is rotatably arranged in the urine washing tower, the buffer plate is a fan blade with at least two blades, and the buffer plate and the screw rod are coaxially fixed; the shower nozzle is equipped with two, and the shower nozzle communicates with the export of circulating pipe, and the position of shower nozzle and buffer board correspond the setting.
2. A melamine urea scrubber according to claim 1, characterized in that: the side wall of the urine washing tower body is provided with a trigger unit, the trigger unit comprises an accommodating cavity arranged in the side wall of the urine washing tower body, a trigger block and a trigger switch used for controlling a spray head are arranged in the accommodating cavity, and the trigger block is fixed on a screw rod; the number of the trigger units is two, and the trigger units are symmetrically arranged along the axis of the urine washing tower body.
3. A melamine urea scrubber according to claim 2, characterized in that: and waterproof rubber is also arranged in the accommodating cavity.
4. A melamine urea scrubber according to claim 1, characterized in that: the bottom of the containing cavity is obliquely arranged towards the center of the urine washing tower.
5. A melamine urea scrubber according to claim 1, characterized in that: and a grating plate is also arranged in the urine washing tower and is positioned below the anti-corrosion mechanism.
6. A melamine urea scrubber according to claim 1, characterized in that: the blades of the fan blades are rectangular.
7. A melamine urea scrubber according to claim 6, characterized in that: the blades and the screw rod of the fan blade are coated with anti-corrosion coatings.
CN202210340179.XA 2022-04-02 2022-04-02 Melamine urea scrubbing tower Active CN114682054B (en)

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Application Number Priority Date Filing Date Title
CN202210340179.XA CN114682054B (en) 2022-04-02 2022-04-02 Melamine urea scrubbing tower

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Application Number Priority Date Filing Date Title
CN202210340179.XA CN114682054B (en) 2022-04-02 2022-04-02 Melamine urea scrubbing tower

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CN114682054A true CN114682054A (en) 2022-07-01
CN114682054B CN114682054B (en) 2023-06-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115301049A (en) * 2022-09-01 2022-11-08 四川能投建工集团设计研究院有限公司 Urea washing tower

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203396275U (en) * 2013-04-10 2014-01-15 山东科技大学 Heat exchanger impingement plate with rotating blades
CN106139829A (en) * 2016-06-14 2016-11-23 蒙自矿冶有限责任公司 A kind of independently detachable flue gas desulfurization ejecting device
CN208642311U (en) * 2018-07-16 2019-03-26 马鞍山梓雨环保科技有限公司 A kind of adjustable spray system in biological deodorizing filter tank
CN109718638A (en) * 2017-10-27 2019-05-07 山东省舜天化工集团有限公司 A kind of energy-saving urea scrubbing tower based on Melamine Production
CN111603937A (en) * 2020-05-22 2020-09-01 朱文艳 Double-stage partition spraying desulfurization tower

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203396275U (en) * 2013-04-10 2014-01-15 山东科技大学 Heat exchanger impingement plate with rotating blades
CN106139829A (en) * 2016-06-14 2016-11-23 蒙自矿冶有限责任公司 A kind of independently detachable flue gas desulfurization ejecting device
CN109718638A (en) * 2017-10-27 2019-05-07 山东省舜天化工集团有限公司 A kind of energy-saving urea scrubbing tower based on Melamine Production
CN208642311U (en) * 2018-07-16 2019-03-26 马鞍山梓雨环保科技有限公司 A kind of adjustable spray system in biological deodorizing filter tank
CN111603937A (en) * 2020-05-22 2020-09-01 朱文艳 Double-stage partition spraying desulfurization tower

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115301049A (en) * 2022-09-01 2022-11-08 四川能投建工集团设计研究院有限公司 Urea washing tower
CN115301049B (en) * 2022-09-01 2024-03-19 四川能投建工集团设计研究院有限公司 Urea scrubbing tower

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Address after: No. 98, Kashi East Road, Kuitun city, Yili Kazak Autonomous Prefecture, Xinjiang Uygur Autonomous Region 833200

Patentee after: Xinjiang Jinjiang Chemical Co.,Ltd.

Country or region after: China

Address before: No. 98, Kashi East Road, Kuitun city, Yili Kazak Autonomous Prefecture, Xinjiang Uygur Autonomous Region 833200

Patentee before: KUITUN JINJIANG CHEMICAL INDUSTRY CO.,LTD.

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