CN105129890A - Evaporating crystallizer - Google Patents

Evaporating crystallizer Download PDF

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Publication number
CN105129890A
CN105129890A CN201510637882.7A CN201510637882A CN105129890A CN 105129890 A CN105129890 A CN 105129890A CN 201510637882 A CN201510637882 A CN 201510637882A CN 105129890 A CN105129890 A CN 105129890A
Authority
CN
China
Prior art keywords
salt
evaporator room
heat exchanger
outlet
circulation tube
Prior art date
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.)
Pending
Application number
CN201510637882.7A
Other languages
Chinese (zh)
Inventor
林卫
李冰
张剑军
万华
朱利民
赵红乔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHINA CEC ENGINEERING Corp
Original Assignee
CHINA CEC ENGINEERING Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CHINA CEC ENGINEERING Corp filed Critical CHINA CEC ENGINEERING Corp
Priority to CN201510637882.7A priority Critical patent/CN105129890A/en
Publication of CN105129890A publication Critical patent/CN105129890A/en
Pending legal-status Critical Current

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Abstract

An evaporating crystallizer comprises an evaporating chamber, a heat exchanger, a forced circulating pump, a circulating pipe clamp sleeve and a salt leg. A foam remover is arranged in the evaporating chamber. Spraying devices are arranged in front of and behind the foam remover. A horn mouth is formed in the center of the foam remover and is located below the liquid level. The forced circulating pump is connected with the heat exchanger through a circulating pipe in a side-inlet and top-outlet mode. A material liquid inlet is formed in the horizontal section of the circulating pipe. A clamp sleeve connector is arranged on the perpendicular section of the circulating pipe. By means of forced circulating heat exchange, the possibility that salt-bearing wastewater is prone to blocking the heat exchanger and producing scales in the heat exchanger in a conventional process is lowered; meanwhile, by means of the built-in foam remover and the spraying devices, secondary steam carries little liquid foam; due to the tank type, the evaporating crystallizer is suitable for various salt-bearing wastewater concentration working conditions, is particularly suitable for an MVR process device, can achieve continuous production, and is long in running cycle, stable in operation and convenient to control.

Description

Evaporative crystallizer
Technical field
The invention belongs to sewage treatment equipment, particularly relate to the evaporative crystallizer for industry process waste water such as pulping and paper-making, Coal Chemical Industry, desulfurization wastewaters.
Background technology
In the brine waste treatment process in the fields such as pulping and paper-making, Coal Chemical Industry, desulfurization wastewater, most of water can be reclaimed by techniques such as pre-treatment, ultrafiltration+reverse osmosis, nanofiltration, electrodialysis, but inevitably produce a part of high-concentration salt-containing wastewater.Containing the inorganic salt such as a large amount of sodium-chlor and sodium sulfate in these high dense brine wastes, if do not processed directly outer row, not only can cause the significant wastage of resource, also can cause the pollution of local environment.The brine waste evaporation treatment process of current routine, the vaporizer of employing has plate-type evaporator, falling-film evaporator, climbing-film evaporator.This type of vaporizer applicable elements is harsher, is all not too applicable to the operating mode easily producing crystallization, easy occluding device, and cause brush tank frequent, the production cycle shortens, and before impact, operation is produced.
Summary of the invention
The object of the present invention is to provide a kind of evaporative crystallizer, be applicable to the brine waste evaporation process under multiple concentration, mixture condition, equipment, the blocking of heat transfer tube, fouling and the frequent brush tank, the cleaning problem that cause can be solved.
The technical scheme of invention:
Evaporative crystallizer, comprise evaporator room, heating chamber, forced circulation pump, circulation tube, salt leg, evaporator room top cone section is provided with venting port, observation visor, scum dredger, spray equipment, secondary steam outlet, evaporator room top is provided with venting port, evaporation chamber is provided with hydraucone, and hydraucone is below liquid level; The top of heating chamber is provided with steam inlet, and bottom is provided with condensation-water drain, and upper and lower two ends are provided with non-condensable gas outlet; The mode that forced circulation pump adopts side to enter to eject is connected with interchanger by circulation tube; Circulation tube vertical section is provided with chuck, and chuck arranges mother liquor outlet, and circulation tube horizontal section is provided with brine waste import, discharging hole, thief hole; Salt leg is connected with bottom evaporator room, is provided with the outlet of salt slurry, evacuation port, elutriation mouth, observes visor below salt leg.
The present invention has following beneficial effect: compared with traditional same category of device, and this evaporative crystallizer is forced circulation evaporation crystallizer.Be the pump circulation heat exchange of large discharge due to what adopt, decrease that brine waste in Conventional vaporizer easily blocks in interchanger, the probability of fouling; Adopt in chuck and discharge the foreign ion balance that a small amount of mother liquor can ensure evaporative crystallizer system, the long-term stability maintaining system is run; Salt leg adopts the mode eluriated simultaneously, maintains disturbance bottom salt leg, ensures the continuous discharge of slurry, can realize continuous seepage, and the equipment cycle of operation extends, and stable operation is convenient to control.
Accompanying drawing explanation
Fig. 1 is invention structural representation.
In figure: 1-evaporator room, 2-heating chamber, 3-forced circulation pump, 4-circulation tube, 5-salt leg, 6-venting port, 7-observes visor, 8-scum dredger, 9-spray equipment, 10-secondary steam exports, 11-hydraucone, 12-steam inlet, 13-condensation-water drain, 14-non-condensable gas exports, 15-mother liquor outlet, the import of 16-brine waste, 17-discharging hole, 18-thief hole, the outlet of 19-salt slurry, 20-evacuation port, 21-eluriates mouth, and 22-observes visor, 23-chuck.
Embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is further elaborated.
As shown in Figure 1, evaporative crystallizer comprises evaporator room 1, heating chamber 2, forced circulation pump 3, circulation tube 4, salt leg 5, evaporator room top cone section is provided with venting port 6, observation visor 7, scum dredger 8, spray equipment 9, secondary steam outlet 10, evaporator room 1 top is provided with venting port 6, and evaporator room 1 inside is provided with hydraucone 11, and hydraucone 11 is below liquid level; The top of heating chamber is provided with steam inlet 12, and bottom is provided with condensation-water drain 13, and upper and lower two ends are provided with non-condensable gas outlet 14; The mode that forced circulation pump 3 adopts side to enter to eject is connected with interchanger by circulation tube; Circulation tube 4 vertical section is provided with chuck 23, chuck is arranged mother liquor outlet 15, and circulation tube 4 horizontal section is provided with brine waste import 16, discharging hole 17, thief hole 18; Salt leg 5 is connected with bottom evaporator room 1, is provided with the outlet 19 of salt slurry, evacuation port 20, eluriates mouth 21, observes visor 22 below salt leg 5.
The present invention is applied in the evaporative crystallization technique of brine waste, specific operation process is as follows: by brine waste by entering circulation tube 4 entrance of evaporative crystallizer after preheater preheats, contact with a large amount of high temperature circulation feed liquid in circulation tube 4, under the drive of forced circulation pump, enter heating chamber 2 together carry out heat exchange, control the internal-external temperature difference of heat transfer tube and the internal circulating load of feed liquid, the plugging phenomenon in circulation feed liquid heat transfer process can be avoided to occur.Feed liquid after heat exchange is by circulation tube 4 hydraucone 11 in crystallisation chamber evaporation concentration, and the secondary steam evaporated enters vapour compressor, and the superheated vapour of the high enthalpy of compressed formation, delivers to heating chamber after spray desuperheating to saturation steam and recycle.Crystallize out after feed liquid reaches capacity in evaporator room, macrobead solid falls into salt leg 5 in settling process, head into raw material brine waste at salt leg 5, ensure that salt slurry is expelled to solid-liquid separation process smoothly from salt leg 5, a small amount of concentrated mother liquor is discharged by chuck mother liquor outlet simultaneously.

Claims (1)

1. evaporative crystallizer, it is characterized in that: comprise evaporator room 1, heating chamber 2, forced circulation pump 3, circulation tube 4, salt leg 5, evaporator room top cone section is provided with venting port 6, observation visor 7, scum dredger 8, spray equipment 9, secondary steam outlet 10, evaporator room 1 top is provided with venting port 6, and evaporator room 1 inside is provided with hydraucone 11, and hydraucone 11 is below liquid level; The top of heating chamber is provided with steam inlet 12, and bottom is provided with condensation-water drain 13, and upper and lower two ends are provided with non-condensable gas outlet 14; The mode that forced circulation pump 3 adopts side to enter to eject is connected with interchanger by circulation tube; Circulation tube 4 vertical section is provided with chuck 23, chuck is arranged mother liquor outlet 15, and circulation tube 4 horizontal section is provided with brine waste import 16, discharging hole 17, thief hole 18; Salt leg 5 is connected with bottom evaporator room 1, is provided with the outlet 19 of salt slurry, evacuation port 20, eluriates mouth 21, observes visor 22 below salt leg 5.
CN201510637882.7A 2015-10-07 2015-10-07 Evaporating crystallizer Pending CN105129890A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510637882.7A CN105129890A (en) 2015-10-07 2015-10-07 Evaporating crystallizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510637882.7A CN105129890A (en) 2015-10-07 2015-10-07 Evaporating crystallizer

Publications (1)

Publication Number Publication Date
CN105129890A true CN105129890A (en) 2015-12-09

Family

ID=54715549

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510637882.7A Pending CN105129890A (en) 2015-10-07 2015-10-07 Evaporating crystallizer

Country Status (1)

Country Link
CN (1) CN105129890A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108191130A (en) * 2017-12-28 2018-06-22 北京国电富通科技发展有限责任公司 A kind of high organic wastewater evaporative crystallization antiscaling treatment method with high salt and device
CN110028121A (en) * 2019-05-10 2019-07-19 成都三顶环保科技有限公司 Desulfurization wastewater treatment system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007275821A (en) * 2006-04-10 2007-10-25 Sasakura Engineering Co Ltd Evaporation concentrator for aqueous solution
CN201101905Y (en) * 2007-09-28 2008-08-20 项文远 Continuous evaporation crystallizer
CN103071310A (en) * 2013-01-31 2013-05-01 江苏井神盐化股份有限公司 Evaporating crystallizer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007275821A (en) * 2006-04-10 2007-10-25 Sasakura Engineering Co Ltd Evaporation concentrator for aqueous solution
CN201101905Y (en) * 2007-09-28 2008-08-20 项文远 Continuous evaporation crystallizer
CN103071310A (en) * 2013-01-31 2013-05-01 江苏井神盐化股份有限公司 Evaporating crystallizer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108191130A (en) * 2017-12-28 2018-06-22 北京国电富通科技发展有限责任公司 A kind of high organic wastewater evaporative crystallization antiscaling treatment method with high salt and device
CN108191130B (en) * 2017-12-28 2020-11-10 北京国电富通科技发展有限责任公司 High-salt high-organic matter wastewater evaporative crystallization anti-scaling treatment device and method
CN110028121A (en) * 2019-05-10 2019-07-19 成都三顶环保科技有限公司 Desulfurization wastewater treatment system

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Application publication date: 20151209

WD01 Invention patent application deemed withdrawn after publication