CN107934987A - One kind removes crystallization from wash type ammonia condensing cooling device - Google Patents

One kind removes crystallization from wash type ammonia condensing cooling device Download PDF

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Publication number
CN107934987A
CN107934987A CN201711392594.5A CN201711392594A CN107934987A CN 107934987 A CN107934987 A CN 107934987A CN 201711392594 A CN201711392594 A CN 201711392594A CN 107934987 A CN107934987 A CN 107934987A
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CN
China
Prior art keywords
unit
heat exchanger
cooling device
exchanger tube
wash type
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Granted
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CN201711392594.5A
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Chinese (zh)
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CN107934987B (en
Inventor
马建
于涛
段有龙
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Acre Coking and Refractory Engineering Consulting Corp MCC
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Acre Coking and Refractory Engineering Consulting Corp MCC
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Priority to CN201711392594.5A priority Critical patent/CN107934987B/en
Publication of CN107934987A publication Critical patent/CN107934987A/en
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01CAMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00Ammonia; Compounds thereof
    • C01C1/02Preparation, purification or separation of ammonia
    • C01C1/022Preparation of aqueous ammonia solutions, i.e. ammonia water
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/002Separation 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 condensation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/06Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

A kind of remove of the invention is crystallized from wash type ammonia condensing cooling device, including several units, stand-by pump, cyclic ammonia water pipe, cooling water heat exchanging pipe between unit is interconnected, it is interconnected between the housing of unit, the unit of the import connection least significant end of stand-by pump, the outlet of stand-by pump connects the spray line of first unit in upper end by cyclic ammonia water pipe.The present invention can realize ammonia condensation ammonification water state, while be attached to the ammonium salt crystallization thing on heat exchanger tube from flushing heat exchanging pipe, removing using the ammonium hydroxide of condensation, and the ammonium hydroxide of condensation can recycle.The present apparatus have the advantages that condensation efficiency is high, ammonium hydroxide from rinse, recycle, stable operation, to be not required to shut-down (breakdown) mainteance, installation and adjustment convenient.

Description

One kind removes crystallization from wash type ammonia condensing cooling device
Technical field
The present invention relates to chemical technology field, more particularly to a kind of remove to crystallize from wash type ammonia condensing cooling device.
Background technology
In coking industry, raw coke oven gas contains more gaseous impurities, and wherein ammonia level is more, while can also contain sulphur Change the foreign gases such as hydrogen, hydrogen cyanide, in raw coke oven gas purification run process, raw coke oven gas is washed, the waste liquid after washing In contain substantial amounts of ammonia and ammonium salt solution, after being separated by ammonia still process, ammonia steam will carry out effectively cooling condensation, obtain high The ammonium hydroxide of purity.
The content of the invention
The object of the present invention is to provide one kind except crystallization is from wash type ammonia condensing cooling device, it is possible to achieve ammonia condensation into Ammonium hydroxide state, while the ammonium salt crystallization thing on heat exchanger tube is attached to from flushing heat exchanging pipe, removing using the ammonium hydroxide of condensation, condensation Ammonium hydroxide can recycle.
In order to achieve the above object, the present invention is realized using following technical scheme:
One kind removes crystallization from wash type ammonia condensing cooling device, including several units, stand-by pump, cyclic ammonia water Pipe, the cooling water heat exchanging pipe between unit are interconnected, and are interconnected between the housing of unit, stand-by pump into The unit of mouth connection least significant end, the outlet of stand-by pump connect the sprinkling of first unit in upper end by cyclic ammonia water pipe Pipe.
In the unit, liquid point is both provided with from several units of second unit down Cloth disk.
The liquid-distributing disk by four blocks of side plates and bottom distribution grid combine it is closed surround, four pieces of a height of 20mm of side plate~ 200mm, bottom distribution grid are uniformly arranged several spray holes.
In the unit, baffling gear is both provided with from several units of the 3rd unit down Plate.
The hydraulic barrier is provided with concave indentation, the circular hole passed through for heat exchanger tube, unilateral arcuate indentation.
The unit is 4, and the outer diameter of cooling water heat exchanging pipe is sequentially reduced from top to bottom, upper end first The heat exchanger tube outer diameter of a unit is Φ 57mm, and heat exchange tube center distance is >=72mm~100mm;Second unit Heat exchanger tube outer diameter be Φ 38mm, heat exchange tube center distance is >=48mm~90mm;Outside the heat exchanger tube of 3rd unit Footpath size is Φ 25mm, and heat exchange tube center distance is >=44mm~70mm;The heat exchanger tube outer diameter of 4th unit is Φ 19mm, heat exchange tube center distance are >=25mm~60mm.
The spray hole of several Φ 2mm~Φ 20mm is symmetrically arranged in the downside of the spray line, and spray line is arranged on The top of the unit of the top.
Compared with prior art, the beneficial effects of the invention are as follows:
One kind removes crystallization from wash type ammonia condensing cooling device, it is possible to achieve ammonia condensation ammonification water state, utilizes at the same time The ammonium hydroxide of condensation removes the ammonium salt crystallization thing being attached on heat exchanger tube, the ammonium hydroxide of condensation can recycle from flushing heat exchanging pipe. The present apparatus have condensation efficiency is high, ammonium hydroxide from rinse, recycle, stable operation, to be not required to shut-down (breakdown) mainteance, installation and adjustment convenient etc. Advantage.
The present invention washes heat pipe using condensing ammonium hydroxide and be uniformly distributed backlash, using equipment pressure balance principle, passes through ammonium hydroxide Submerge dissolving crystallized ammonium salt;Intermittent or continuity utilizes the dynamic pressure potential energy of equipment, and the ammonium of crystallization is rinsed by cyclic ammonia water Salt, removes the ammonium salt crystallization being attached on heat exchanger tube, realizes and efficiently transmits thermal effect, obtains the ammonium hydroxide product of qualification.
Brief description of the drawings
Fig. 1 is that the present invention is a kind of except the schematic diagram crystallized from wash type ammonia condensing cooling device.
Fig. 2 is the schematic diagram of liquid stream distributing disc in the present invention.
Fig. 3 is the schematic diagram of hydraulic barrier in the present invention.
In figure:1- ammonia entrances;2- tube sheets;3- cooling water outlets;4- bobbin carriages;The unit of 5- upper ends first, 6- point Journey partition plate;Second unit of 7-;The 3rd unit of 8-;The 4th unit of 9-;10- cooling water inlets;11- ammonia Water out;12- stand-by pumps;13- cyclic ammonia waters pipe, 14- hydraulic barriers, 14-1 one side arcuate indentation, 14-2 concave indentations, 14-3 Circular hole, 15- liquid-distributing disks, 15-1 side plates, 15-2 bottoms distribution grid, 15-3 spray holes, 16- heat exchanger tubes, 17- housings, 18- sprays Spill pipe.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings:
See Fig. 1, one kind is except crystallization is from wash type ammonia condensing cooling device, including several units, stand-by pump 12, follows Ring ammonia water pipe 13, the cooling water heat exchanging pipe between unit are interconnected, and are interconnected between the housing 17 of unit, The unit of the import connection least significant end of stand-by pump 12, the outlet of stand-by pump 12 connects upper end first by cyclic ammonia water pipe 13 The spray line 18 of a unit 5.
In the unit, liquid is both provided with from several units of second unit 7 down Distributing disc 15.
See Fig. 2, the liquid-distributing disk 15 by four pieces of side plate 15-1 and bottom distribution grid 15-2 combine it is closed surround, four A height of 20mm~the 200mm of block side plate 15-1, bottom distribution grid 15-2 are uniformly arranged the spray hole of several Φ 1mm~Φ 20mm 15-3.The spacing range of spray hole 15-3 is 100mm~600mm.
In the unit, baffling is both provided with from several units of the 3rd unit 8 down Baffle 14.
See Fig. 3, the hydraulic barrier 14 is provided with concave indentation 14-2, the circular hole 14-3 passed through for heat exchanger tube, one side Arcuate indentation 14-1.Concave indentation 14-2 is provided through passage for liquid-distributing disk 15, and unilateral arcuate indentation 14-1 is used for ammonia Pass through with the baffling of ammonia water mixture.
The unit is 4, and the outer diameter of cooling water heat exchanging pipe is sequentially reduced from top to bottom, heat exchanger tube 16 Arrangement to be connected through tube sheet 2 with the bobbin carriage 4 of 6 both sides of pass partition.The heat exchanger tube 16 of first unit 4 in upper end Outer diameter is Φ 57mm, and 16 centre-to-centre spacing of heat exchanger tube is >=72mm~100mm;16 outside diameter of heat exchanger tube of second unit 7 Size is Φ 38mm, and 16 centre-to-centre spacing of heat exchanger tube is >=48mm~90mm;16 outer diameter of heat exchanger tube of 3rd unit 8 is Φ 25mm, 16 centre-to-centre spacing of heat exchanger tube are >=44mm~70mm;16 outer diameter of heat exchanger tube of 4th unit 9 is Φ 19mm, 16 centre-to-centre spacing of heat exchanger tube are >=25mm~60mm.
The spray hole of several Φ 2mm~Φ 20mm is symmetrically arranged in the downside of the spray line 18, and spray line is set At the top of the unit of the top.
The present invention includes four units, stand-by pump 12 and cyclic ammonia water pipe 13;Wherein four units include Bobbin carriage 4, heat exchanger tube 16, pass partition 6, housing 17 and inlet and outlet adapter, heat exchanger tube 16 is arranged in housing 17, in housing 17 One end is provided with bobbin carriage 4, and one end of heat exchanger tube 16 is stretched out in bobbin carriage 4, and bobbin carriage 4 is divided to for two parts by pass partition 6, four The bobbin carriage 4 of unit is interconnected by importing and exporting adapter, and cooling water is equipped with 4 bottom of bobbin carriage of the 4th unit 9 Entrance 10, in upper end, the upper end of the bobbin carriage 4 of first unit 5 is equipped with cooling water outlet 3.
The upper end of first unit 5 in upper end is equipped with ammonia entrance 1, and the lower end of the lowermost unit is equipped with ammonium hydroxide Outlet 11.
The inside of the unit of upper end first 5 sets spray line 18, and the inside of second unit 7 sets liquid distribution Disk 15, third and fourth unit (8,9) is internal to set hydraulic barrier 14 and liquid-distributing disk 15.Ammonia flows successively from top to bottom The shell side of the unit 7 of unit 5, second of upper end first, the 3rd unit 8 and the 4th unit 9 is crossed, Condensed ammonia becomes ammonium hydroxide from 11 discharge of ammonium hydroxide outlet;Cooling water flows successively through the 4th unit 9, from bottom to top Inside the bobbin carriage 4 and heat exchanger tube 16 of three units, 8, second units 7 and upper ends, first unit 5, by cold But water out 3 flows out.The present apparatus is countercurrent flow and the complex heat transfer flow of cross-flow heat exchange.
13 lower end of cyclic ammonia water pipe is connected with 17 bottom of housing of the 4th unit 9,13 upper end of cyclic ammonia water pipe with The spray line 18 on first 5 housing of unit, 17 top in upper end connects, and cyclic ammonia water is in cyclic ammonia water pipe 13 by spare 12 pressurized delivereds are pumped, realize the spray line that the ammonia circulation of the 4th unit 9 is delivered to first unit 5 in upper end 18 spray out, and the cyclic ammonia water after sprinkling rinses 16 outer wall of heat exchanger tube of unit from top to bottom.
One kind provided by the invention removes crystallization:Steamed close to saturated ammonia Vapour is entered by ammonia entrance 1 in the housing 17 of first unit 5 in upper end of ammonia condensing cooling device, and Uniform Flow passes through spray The shell side heat exchanger tube of pipe 18 and the unit 5 of upper end first is spilt, spray line 18 can the intermittently or serially low circulation of spray temperature Ammonium hydroxide, has cooling water Uniform Flow inside the heat exchanger tube 16 of first unit 5 in upper end, therefore, ammonia steam is in cyclic ammonia water Under cooling effect with heat exchanger tube 16, the rapid condensation ammonium hydroxide in part, is converged, with cyclic ammonia water in 16 outer wall of heat exchanger tube successively The heat exchanger tube 16 of lower floor is dripped to, from the part of appliance rinsed in the unit 5 of upper end first.Ammonium hydroxide after convergence continues downward 17 import of housing of second unit 7 is flowed to, second top of 7 housing of unit 17 sets liquid-distributing disk 15, use In being uniformly distributed the ammonium hydroxide that flows down from the unit 5 of upper end first, the ammonium hydroxide after distribution continues drop and is set to second unit Heat exchanger tube 16 inside standby 7 housings 17, since the cooling of the 16 internal flow cooling water of heat exchanger tube of second unit 7 is made With the material that the unit 5 of upper end first transports coagulates for ammonia with separating beginning condensation, ammonia in the middle part of the mixture of ammonium hydroxide Knot is slower, is attached to the ammonium salt that drop on heat exchanger tube 16 easily forms high concentration, and then produces crystallization, divides through liquid-distributing disk 15 The liquid to get off is flowed after cloth and washes away heat exchanger tube 16 in second 7 housing 17 of unit, from rinsing second unit 7 Interior part of appliance.Ammonium hydroxide and uncooled ammonia in second unit 7 collect follow-up afterflow by ammonium hydroxide outlet To the inlet tube of the 3rd unit 8, uniformly divide again by the liquid-distributing disk 15 in the 3rd 8 housing 17 of unit Cloth ammonium hydroxide, while under the cooling effect of heat exchanger tube 16, the further condensation of ammonia is realized, after becoming liquid due to gas condensation Volume reduces, and hydraulic barrier 14 is set in the 3rd 8 housing 17 of unit, uncooled through the outside of heat exchanger tube 16 for improving What the flow velocity of ammonia, augmentation of heat transfer, while hydraulic barrier 14 were provided with liquid-distributing disk 15 passes through passage --- concave indentation 14- 2nd, the arcuate indentation 14-1 for passing through circular hole 14-3 and baffling of heat exchanger tube 16, is used for realization the 3rd 8 housing 17 of unit Interior ammonia condensation, since the baffling of hydraulic barrier 14 acts on, the 3rd unit 8 flows into for a central inlet, both sides Outlet outflow, flows to the 9 ammonia entrance of unit of lower part the 4th, in the 4th 9 housing 17 of unit, ammonium hydroxide is in liquid Distributing disc 15 is uniformly distributed under acting on, and from the crystal of 16 outer wall of flushing heat exchanging pipe, ammonia is under the condensation of heat exchanger tube 16 Coagulating liq, hydraulic barrier 14 strengthen ammonia flowing, improve heat-transfer effect, finally realize the condensation cooling procedure of ammonia, obtain Qualified ammonium hydroxide product.
The cooling aqueous medium used of the present invention, enters from the cooling water inlet 10 of the 4th unit 9 in lower part Device, countercurrently flows up, successively by 4 times journeys of the 4th 9 bobbin carriage of unit, the 4th 9 heat exchanger tube 16 of unit, Journey, 4 times journeys of the 3rd 8 bobbin carriage of unit, the 3rd 8 heat exchanger tube the 16, the 3rd of unit on four 9 bobbin carriages 4 of unit Journey, second 7 bobbin carriage of unit, 4 times journeys, second 7 heat exchanger tube of unit 16, second on a 8 bobbin carriage 4 of unit Journey, upper end first 5 bobbin carriage of unit, 4 times journeys, 5 heat exchanger tube of unit, 16 and of upper end first on 7 bobbin carriage 4 of unit Journey on 5 bobbin carriage 4 of the unit of upper end first, is discharged by cooling water outlet 3, realizes the reversed flow condensation cooling to ammonia.Meanwhile Due to ammonia in condensation process there are the phase-state change that gas phase becomes liquid phase, volume reduces, therefore is tapered into using size Heat exchanger tube and tube spacing, for augmentation of heat transfer lifting device performance.
To improve equipment performance, the present invention can close the ammonium hydroxide discharge of ammonium hydroxide outlet 11, the housing 17 of four units Interior ammonia persistently condenses, and liquid level gradually rises ammonium hydroxide from bottom to top in the housing 17 of four units, adheres to crystallization Heat exchanger tube 16 is completed to be immersed in ammonium hydroxide, dissolving except the ammonium salt that decrystallizes, realization device from rinsing, after flushed, ammonium hydroxide by Outlet discharge.The present apparatus can utilize stand-by pump 12 by the ammonium hydroxide of the 4th unit 9 through circulation with intermittent or continuity Ammonia water pipe 13, is delivered to progress ammonium hydroxide sprinkling in the spray line 18 of first unit 5 in upper end and rinses, strengthen from flushing except knot Brilliant effect.
Described above is only the basic principle of the present invention, and not the present invention is imposed any restrictions, every right according to the present invention It carries out equivalent variations modification and modifies to its shape, within the category of the art of this patent protection scheme.

Claims (7)

1. one kind is except crystallization is from wash type ammonia condensing cooling device, it is characterised in that including several units, stand-by pump, Cyclic ammonia water pipe, the cooling water heat exchanging pipe between unit are interconnected, and are interconnected between the housing of unit, standby With the unit of the import connection least significant end of pump, the outlet of stand-by pump connects the unit of the top by cyclic ammonia water pipe Spray line.
2. a kind of remove according to claim 1 is crystallized from wash type ammonia condensing cooling device, it is characterised in that the list In element device, liquid-distributing disk is both provided with from several units of second unit down.
3. a kind of remove according to claim 2 is crystallized from wash type ammonia condensing cooling device, it is characterised in that the liquid Body distributing disc by four blocks of side plates and bottom distribution grid combine it is closed surround, four pieces of a height of 20mm~200mm of side plate, bottom distribution grid It is uniformly arranged several spray holes.
4. a kind of remove according to claim 1 or 2 is crystallized from wash type ammonia condensing cooling device, it is characterised in that described Unit in, be both provided with hydraulic barrier from several units of the 3rd unit down.
5. a kind of remove according to claim 4 is crystallized from wash type ammonia condensing cooling device, it is characterised in that the folding Stream baffle plate setting has concave indentation, the circular hole passed through for heat exchanger tube, unilateral arcuate indentation.
6. a kind of remove according to claim 1 is crystallized from wash type ammonia condensing cooling device, it is characterised in that the list Element device is 4, and the outer diameter of cooling water heat exchanging pipe is sequentially reduced from top to bottom, the heat exchange of first unit in upper end Pipe outside diameter size is Φ 57mm, and heat exchange tube center distance is >=72mm~100mm;The heat exchanger tube outer diameter of second unit For Φ 38mm, heat exchange tube center distance is >=48mm~90mm;The heat exchanger tube outer diameter of 3rd unit is Φ 25mm, is changed Heat pipe centre-to-centre spacing is >=44mm~70mm;The heat exchanger tube outer diameter of 4th unit is Φ 19mm, and exchange heat tube center distance For >=25mm~60mm.
7. a kind of remove according to claim 1 is crystallized from wash type ammonia condensing cooling device, it is characterised in that the sprinkling The spray hole of several Φ 2mm~Φ 20mm is symmetrically arranged in the downside of pipe, and spray line is arranged on the unit of the top Top.
CN201711392594.5A 2017-12-21 2017-12-21 Remove crystallization from washing formula ammonia condensation cooling device Active CN107934987B (en)

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CN107934987B CN107934987B (en) 2024-05-14

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108447A (en) * 1960-12-23 1963-10-29 Chicago Bridge & Iron Co Refrigeration by direct vapor condensation
CN1337561A (en) * 2000-08-08 2002-02-27 液体空气乔治洛德方法利用和研究有限公司 Heat-exchanger of heat-exchanging block comprising multiple uniform fluid-distribution supply pipeline
CN1469774A (en) * 2000-10-24 2004-01-21 Carbamate condensation unit
CN2873744Y (en) * 2006-03-21 2007-02-28 任翱翔 Device for quick preparing industrial ammonia water
CN104006581A (en) * 2014-06-21 2014-08-27 吉首大学 Novel ammonia refrigeration condenser
CN206146223U (en) * 2016-07-12 2017-05-03 天津市晨辉饲料有限公司 High -efficient calibration nitrogen appearance condensing equipment
CN106979535A (en) * 2017-04-28 2017-07-25 北京拓首工业炉股份有限公司 A kind of combined air air preheater with denitration function
CN207738464U (en) * 2017-12-21 2018-08-17 中冶焦耐(大连)工程技术有限公司 One kind removing crystallization from wash type ammonia condensing cooling device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108447A (en) * 1960-12-23 1963-10-29 Chicago Bridge & Iron Co Refrigeration by direct vapor condensation
CN1337561A (en) * 2000-08-08 2002-02-27 液体空气乔治洛德方法利用和研究有限公司 Heat-exchanger of heat-exchanging block comprising multiple uniform fluid-distribution supply pipeline
CN1469774A (en) * 2000-10-24 2004-01-21 Carbamate condensation unit
CN2873744Y (en) * 2006-03-21 2007-02-28 任翱翔 Device for quick preparing industrial ammonia water
CN104006581A (en) * 2014-06-21 2014-08-27 吉首大学 Novel ammonia refrigeration condenser
CN206146223U (en) * 2016-07-12 2017-05-03 天津市晨辉饲料有限公司 High -efficient calibration nitrogen appearance condensing equipment
CN106979535A (en) * 2017-04-28 2017-07-25 北京拓首工业炉股份有限公司 A kind of combined air air preheater with denitration function
CN207738464U (en) * 2017-12-21 2018-08-17 中冶焦耐(大连)工程技术有限公司 One kind removing crystallization from wash type ammonia condensing cooling device

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