CN105251233A - Falling film and MVR forced circulating evaporative crystallization system - Google Patents
Falling film and MVR forced circulating evaporative crystallization system Download PDFInfo
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- CN105251233A CN105251233A CN201510838408.0A CN201510838408A CN105251233A CN 105251233 A CN105251233 A CN 105251233A CN 201510838408 A CN201510838408 A CN 201510838408A CN 105251233 A CN105251233 A CN 105251233A
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Abstract
The invention discloses a falling film and MVR forced circulating evaporative crystallization system which comprises a raw material tank, a falling film evaporative crystallization system and an MVR forced circulating evaporative crystallization system. The falling film evaporation and the MVR forced circulating evaporation are reasonably combined together, the system integrates the advantages of the two evaporative crystallization systems, is suitable for evaporative crystallization treatment of easily-crystallized high-viscosity low-concentration mixed waste liquid containing complicated components and insoluble solid and can be applied to larger treatment amount of large-scale industrial production. The falling film and MVR forced circulating evaporative crystallization system is reasonable in structure, low in energy consumption, compact in structure, small in occupied area, capable of continuously performing crystallization production and larger in treatment capacity.
Description
Technical field
The present invention relates to evaporation crystallization equipment technical field, be specifically related to a kind of falling liquid film and MVR forced-circulation evaporation crystal system.
Background technology
In the industrial production such as chemical industry, light industry, food, medicine, usually run into the concentrated of the mixed liquor be made up of nonvolatile solute and volatilizable solvent and solute separation problem.Crystallizing evaporator is for common device herein, during work, by input heat, material is seethed with excitement, solvent is steamed from mixed liquor, allow solvent release solute, oversaturated solute crystallization becomes solid, is just separated by solute by centrifugal process or additive method afterwards.
Owing to needing the feature of the mixed liquor of evaporative crystallization process different at different production fields, the structure and working principle for the crystallizing evaporator of each production field is also different.In the wastewater treatment industry in the fields such as printing and dyeing, fermentation, chemical industry, oil field, pending mixed waste liquor has complicated component, easily crystallization usually, viscosity is high, concentration is low, containing the feature of insoluble solidity thing, and often needs amount to be processed very large.But, also not used for evaporation crystallization equipment herein in prior art.
Summary of the invention
The object of the invention is the deficiency existed to overcome prior art, a kind of falling liquid film and MVR forced-circulation evaporation crystal system are provided, this evaporation and crystallization system is applicable to complicated component, easily crystallization, viscosity is high, concentration is low, containing the evaporative crystallization process of the mixed waste liquor of insoluble solidity thing.
The present invention is achieved by the following technical solutions: a kind of falling liquid film and MVR forced-circulation evaporation crystal system, comprise head tank, falling film evaporation crystal system and MVR forced-circulation evaporation crystal system, described falling film evaporation crystal system comprises falling film evaporation heating and separator, described falling film evaporation heating comprises vaporization chamber and is arranged at the gas-liquid separation chamber below vaporization chamber, gas-liquid separation chamber is connected with described separator by pipe fitting, described head tank is connected with the charging aperture of the vaporization chamber upper end of described falling film evaporation heating by feed pump and pipeline, described MVR forced-circulation evaporation crystal system comprises forced-circulation evaporation heater, forced circulation pump and crystallizer, the upper end discharging opening of described forced-circulation evaporation heater is connected by the upper feed inlet of pipeline with described crystallizer, the refluxing opening of the bottom of described crystallizer is connected with the lower end charging aperture of described forced-circulation evaporation heater by pipeline and described forced circulation pump, the discharging opening of the gas-liquid separation chamber lower end of described falling film evaporation heating and the discharging opening of described separator lower end are connected with the pipeline that the charging aperture of described forced circulation pump is connected by pipeline and transfering material pump, the magma outlet of the bottom of described crystallizer is connected with magma pump by pipeline.
The steam (vapor) outlet of the steam (vapor) outlet of the separator upper end of described falling film evaporation crystal system, the crystallizer upper end of described MVR forced-circulation evaporation crystal system is connected with the steam inlet of the steam inlet of the shell side of described forced-circulation evaporation heater, the shell side of described falling film evaporation heating by pipeline and vapour compression machine.
Also comprise heat recovery heat-exchange system, described heat recovery heat-exchange system comprises condensate water pot and plate type heat exchanger, the condensation-water drain of the shell side of described forced-circulation evaporation heater, the condensation-water drain of the shell side of described falling film evaporation heating is connected by the inlet of pipeline with described condensate water pot upper end, the steam (vapor) outlet of described condensate water pot upper end is connected with the steam inlet of the shell side of described falling film evaporation heating, the condensation-water drain of described condensate water pot lower end is connected with the entrance of described plate type heat exchanger shell side by pipeline and condensate pump, the outlet of described plate type heat exchanger shell side is connected with condensate draining pipe, the tube side of described plate type heat exchanger is connected between the charging aperture of vaporization chamber upper end of described feed pump and described falling film evaporation heating.
Described heat recovery heat-exchange system also comprises pipe heat exchanger, the vacuum orifice of the shell side of described falling film evaporation heating is connected by the air inlet of pipeline with the shell side of described pipe heat exchanger, the exhaust outlet of the shell side of described pipe heat exchanger is connected with vavuum pump by pipeline, and the tube side of described pipe heat exchanger is connected between the charging aperture of the tube side of described feed pump and described plate type heat exchanger.
The invention has the beneficial effects as follows: the present invention falling film evaporation and MVR forced-circulation evaporation reasonable combination to together with, the advantage of set two kinds of evaporation and crystallization system, it is applicable to complicated component, easily crystallization, viscosity is high, concentration is low, containing the evaporative crystallization process of the mixed waste liquor of insoluble solidity thing, and can be applicable in the larger large-scale industrial production for the treatment of capacity, it is rational in infrastructure, and energy consumption is low, compact conformation, floor space is little, and can carry out crystallization production continuously, disposal ability is larger.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In the drawings: 1-head tank; 2-feed pump; 3-pipe heat exchanger; 4-vavuum pump; 5-plate type heat exchanger; 6-condensate pump; 7-condensate water pot; 8-circulating pump; 9-falling film evaporation heating; 10-separator; 11-transfering material pump; 12-forced-circulation evaporation heater; 13-forced circulation pump; 14-crystallizer; 15-vapour compression machine; 16-magma pump.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 1, a kind of falling liquid film and MVR forced-circulation evaporation crystal system, comprise head tank 1, falling film evaporation crystal system and MVR forced-circulation evaporation crystal system, falling film evaporation crystal system comprises falling film evaporation heating 9 and separator 10, falling film evaporation heating 9 comprises vaporization chamber and is arranged at the gas-liquid separation chamber below vaporization chamber, gas-liquid separation chamber is connected with separator 10 by pipe fitting, head tank 1 is connected with the charging aperture of the vaporization chamber upper end of falling film evaporation heating 9 by feed pump 2 and pipeline, MVR forced-circulation evaporation crystal system comprises forced-circulation evaporation heater 12, forced circulation pump 13 and crystallizer 14, the upper end discharging opening of forced-circulation evaporation heater 12 is connected by the upper feed inlet of pipeline with crystallizer 14, the refluxing opening of the bottom of crystallizer 14 is connected with the lower end charging aperture of forced-circulation evaporation heater 12 by pipeline and forced circulation pump 13, the discharging opening of the gas-liquid separation chamber lower end of falling film evaporation heating 9 and the discharging opening of separator 10 lower end are connected with the pipeline that the charging aperture of forced circulation pump 13 is connected by pipeline and transfering material pump 11, the magma outlet of the bottom of crystallizer 14 is connected with magma pump 16 by pipeline.The gas-liquid separation chamber of falling film evaporation heating 9 is connected with the vaporization chamber of falling film evaporation heating 9 by pipeline and circulating pump 8.
During work, leading portion adopts falling film evaporation crystal system to carry out elementary decrement, is evaporated to close to saturation state, and back segment adopts the crystallization of MVR forced-circulation evaporation crystal system to generate solid.Exported by magma pump 16 afterwards, adopt centrifugation that crystallization is out centrifugal, centrifuge mother liquor returns MVR forced-circulation evaporation crystal system and continues evaporation and concentration, reaches mother liquor " zero-emission ".
See Fig. 1, the steam (vapor) outlet of the steam (vapor) outlet of separator 10 upper end of falling film evaporation crystal system, crystallizer 14 upper end of MVR forced-circulation evaporation crystal system is connected with the steam inlet of the steam inlet of the shell side of forced-circulation evaporation heater 12, the shell side of falling film evaporation heating 9 by pipeline and vapour compression machine 15.Feed liquid is evaporated the indirect steam produced and is entered vapour compression machine 15 from discharge and compress supercharging, intensification, improve the heat content of indirect steam, then exothermic condensation in the shell side entering the shell side of forced-circulation evaporation heater 12, falling film evaporation heating 9, enablely measure Appropriate application, make equipment more energy-conservation.
The present invention also comprises heat recovery heat-exchange system, heat recovery heat-exchange system comprises condensate water pot 7 and plate type heat exchanger 5, the condensation-water drain of the shell side of forced-circulation evaporation heater 12, the condensation-water drain of the shell side of falling film evaporation heating 9 is connected by the inlet of pipeline with condensate water pot 7 upper end, the steam (vapor) outlet of condensate water pot 7 upper end is connected with the steam inlet of the shell side of falling film evaporation heating 9, the condensation-water drain of condensate water pot 7 lower end is connected with the entrance of plate type heat exchanger 5 shell side by pipeline and condensate pump 6, the outlet of plate type heat exchanger 5 shell side is connected with condensate draining pipe, the tube side of plate type heat exchanger 5 is connected between the charging aperture of vaporization chamber upper end of feed pump 2 and falling film evaporation heating 9.In the course of work, the condensed water that the shell side of the shell side of forced-circulation evaporation heater 12, falling film evaporation heating 9 is released also has uniform temperature, heats feed liquid in advance with condensed water, enablely measures Appropriate application.
Heat recovery heat-exchange system also comprises pipe heat exchanger 3, the vacuum orifice of the shell side of falling film evaporation heating 9 is connected by the air inlet of pipeline with the shell side of pipe heat exchanger 3, the exhaust outlet of the shell side of pipe heat exchanger 3 is connected with vavuum pump 4 by pipeline, and the tube side of pipe heat exchanger 3 is connected between the charging aperture of the tube side of feed pump 2 and plate type heat exchanger 5.The air that the shell side of falling film evaporation heating 9 is extracted out has uniform temperature, and the air be drawn out of, by pipe heat exchanger 3 and feed liquid heat exchange, heats feed liquid, more energy-conserving and environment-protective in advance.
Finally should be noted that; above content is only in order to illustrate technical scheme of the present invention; but not limiting the scope of the invention; the simple modification that those of ordinary skill in the art carries out technical scheme of the present invention or equivalently to replace, does not all depart from essence and the scope of technical solution of the present invention.
Claims (4)
1. a falling liquid film and MVR forced-circulation evaporation crystal system, it is characterized in that: described falling liquid film and MVR forced-circulation evaporation crystal system comprise head tank, falling film evaporation crystal system and MVR forced-circulation evaporation crystal system, described falling film evaporation crystal system comprises falling film evaporation heating and separator, described falling film evaporation heating comprises vaporization chamber and is arranged at the gas-liquid separation chamber below vaporization chamber, gas-liquid separation chamber is connected with described separator by pipe fitting, described head tank is connected with the charging aperture of the vaporization chamber upper end of described falling film evaporation heating by feed pump and pipeline, described MVR forced-circulation evaporation crystal system comprises forced-circulation evaporation heater, forced circulation pump and crystallizer, the upper end discharging opening of described forced-circulation evaporation heater is connected by the upper feed inlet of pipeline with described crystallizer, the refluxing opening of the bottom of described crystallizer is connected with the lower end charging aperture of described forced-circulation evaporation heater by pipeline and described forced circulation pump, the discharging opening of the gas-liquid separation chamber lower end of described falling film evaporation heating and the discharging opening of described separator lower end are connected with the pipeline that the charging aperture of described forced circulation pump is connected by pipeline and transfering material pump, the magma outlet of the bottom of described crystallizer is connected with magma pump by pipeline.
2. falling liquid film according to claim 1 and MVR forced-circulation evaporation crystal system, is characterized in that: the steam (vapor) outlet of the steam (vapor) outlet of the separator upper end of described falling film evaporation crystal system, the crystallizer upper end of described MVR forced-circulation evaporation crystal system is connected with the steam inlet of the steam inlet of the shell side of described forced-circulation evaporation heater, the shell side of described falling film evaporation heating by pipeline and vapour compression machine.
3. falling liquid film according to claim 2 and MVR forced-circulation evaporation crystal system, it is characterized in that: also comprise heat recovery heat-exchange system, described heat recovery heat-exchange system comprises condensate water pot and plate type heat exchanger, the condensation-water drain of the shell side of described forced-circulation evaporation heater, the condensation-water drain of the shell side of described falling film evaporation heating is connected by the inlet of pipeline with described condensate water pot upper end, the steam (vapor) outlet of described condensate water pot upper end is connected with the steam inlet of the shell side of described falling film evaporation heating, the condensation-water drain of described condensate water pot lower end is connected with the entrance of described plate type heat exchanger shell side by pipeline and condensate pump, the outlet of described plate type heat exchanger shell side is connected with condensate draining pipe, the tube side of described plate type heat exchanger is connected between the charging aperture of vaporization chamber upper end of described feed pump and described falling film evaporation heating.
4. falling liquid film according to claim 3 and MVR forced-circulation evaporation crystal system, it is characterized in that: described heat recovery heat-exchange system also comprises pipe heat exchanger, the vacuum orifice of the shell side of described falling film evaporation heating is connected by the air inlet of pipeline with the shell side of described pipe heat exchanger, the exhaust outlet of the shell side of described pipe heat exchanger is connected with vavuum pump by pipeline, and the tube side of described pipe heat exchanger is connected between the charging aperture of the tube side of described feed pump and described plate type heat exchanger.
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Cited By (10)
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| CN105771304A (en) * | 2016-05-05 | 2016-07-20 | 无锡荣丰生物工程有限公司 | Double-effect countercurrent evaporation crystallization system for monosodium glutamate and working process thereof |
| CN105833555A (en) * | 2016-05-10 | 2016-08-10 | 深圳市瑞升华科技股份有限公司 | Plate heat exchanger concentration system and concentration process thereof |
| CN106145224A (en) * | 2016-08-18 | 2016-11-23 | 深圳市瑞升华科技股份有限公司 | A kind of processing method of bisnaphthol β salt mother solution |
| CN106698493A (en) * | 2017-01-05 | 2017-05-24 | 四川理工学院 | Evaporative crystallization technology of barium chloride |
| CN106865856A (en) * | 2017-03-08 | 2017-06-20 | 上海轻叶能源股份有限公司 | Medium density fibre board (MDF) production wastewater treatment technique |
| CN107913526A (en) * | 2017-12-27 | 2018-04-17 | 河北工业大学 | High level salt solution evaporation crystallization equipment and process |
| CN108428401A (en) * | 2018-04-10 | 2018-08-21 | 天津市职业大学 | Visualization cycle falling film evaporation instructional device |
| CN108619745A (en) * | 2017-03-24 | 2018-10-09 | 天津邦特磁性材料有限公司 | A kind of full-automatic concentration systems of neodymium iron boron waste material filtrate |
| CN111268846A (en) * | 2020-03-30 | 2020-06-12 | 浙江红狮环保股份有限公司 | Method for purifying waste incineration fly ash process salt-containing wastewater |
| CN114506954A (en) * | 2022-01-18 | 2022-05-17 | 德阳华源环保节能科技有限责任公司 | Low-concentration solution or wastewater evaporative crystallization device and method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105771304A (en) * | 2016-05-05 | 2016-07-20 | 无锡荣丰生物工程有限公司 | Double-effect countercurrent evaporation crystallization system for monosodium glutamate and working process thereof |
| CN105833555A (en) * | 2016-05-10 | 2016-08-10 | 深圳市瑞升华科技股份有限公司 | Plate heat exchanger concentration system and concentration process thereof |
| CN106145224A (en) * | 2016-08-18 | 2016-11-23 | 深圳市瑞升华科技股份有限公司 | A kind of processing method of bisnaphthol β salt mother solution |
| CN106698493A (en) * | 2017-01-05 | 2017-05-24 | 四川理工学院 | Evaporative crystallization technology of barium chloride |
| CN106865856B (en) * | 2017-03-08 | 2020-07-14 | 上海轻叶能源股份有限公司 | Process for treating wastewater from production of medium-density fiberboard |
| CN106865856A (en) * | 2017-03-08 | 2017-06-20 | 上海轻叶能源股份有限公司 | Medium density fibre board (MDF) production wastewater treatment technique |
| CN108619745A (en) * | 2017-03-24 | 2018-10-09 | 天津邦特磁性材料有限公司 | A kind of full-automatic concentration systems of neodymium iron boron waste material filtrate |
| CN107913526A (en) * | 2017-12-27 | 2018-04-17 | 河北工业大学 | High level salt solution evaporation crystallization equipment and process |
| CN107913526B (en) * | 2017-12-27 | 2023-09-12 | 河北工业大学 | High-salt solution evaporation crystallization equipment and process method |
| CN108428401A (en) * | 2018-04-10 | 2018-08-21 | 天津市职业大学 | Visualization cycle falling film evaporation instructional device |
| CN111268846A (en) * | 2020-03-30 | 2020-06-12 | 浙江红狮环保股份有限公司 | Method for purifying waste incineration fly ash process salt-containing wastewater |
| CN111268846B (en) * | 2020-03-30 | 2022-02-15 | 浙江红狮环保股份有限公司 | Method for purifying waste incineration fly ash process salt-containing wastewater |
| CN114506954A (en) * | 2022-01-18 | 2022-05-17 | 德阳华源环保节能科技有限责任公司 | Low-concentration solution or wastewater evaporative crystallization device and method |
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