CN102139891A - Method for rapidly manufacturing industrial salt by utilizing sylvine mine and device - Google Patents

Method for rapidly manufacturing industrial salt by utilizing sylvine mine and device Download PDF

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CN102139891A
CN102139891A CN2011100348016A CN201110034801A CN102139891A CN 102139891 A CN102139891 A CN 102139891A CN 2011100348016 A CN2011100348016 A CN 2011100348016A CN 201110034801 A CN201110034801 A CN 201110034801A CN 102139891 A CN102139891 A CN 102139891A
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bittern
heating chamber
evaporator room
salt
sylvite ore
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CN102139891B (en
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程芳琴
成怀刚
马金元
赵静
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Shanxi University
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Shanxi University
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

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Abstract

The invention provides a method for rapidly manufacturing industrial salt by utilizing sylvine mine and a device, belonging to the technical field of comprehensive utilization of mineral salt and brine. The method for manufacturing the industrial slat is as follows: the solution mining is carried out on the sylvine mine and brine is extracted, the brine is initially concentrated by low grade heat energy and then is evaporated step by step to obtain products including carnallite, bischofite and the like; desalination water and condensate water are circulated and used for solution mining; and waste heat is simultaneously recycled. The device for manufacturing industrial salt comprises a heater, a desalination apparatus and a heat exchanger. The invention has simple process route, high efficiency of production process, is convenient to use the low grade heat energy, has the energy saving advantage, can extract various inorganic salt products by classification and realizes the comprehensive utilization of energy sources and resources.

Description

Sylvite ore is produced the method and apparatus of Industrial Salt fast
Technical field
The present invention relates to the comprehensive utilization of rock salt and bittern, specifically belong to the method and apparatus that a kind of sylvite ore is produced Industrial Salt fast.
Background technology
In the process of utilizing sylvite ore production potash fertilizer, the primary raw materials of potash fertilizer production is the raw ore of adopting system that bittern shines by molten mostly, but it is surplus that the one-tenth ore deposit cycle of raw ore often reaches the moon, the solar thermal energy utilising efficiency is low, and the molten process water loss of adopting is very big, foreign matter content in the raw ore is very high, becomes the ore deposit process to also have a large amount of old halogen to discharge, and causes the bittern efficiency of resource very low; In addition, along with production-scale dilatation, low grade ore is cumulative, and resource and raw material present the phenomenon of structural shortage, causes the preparation of raw ore to be difficult to satisfy downstream production demand, influences the raw material supply of subsequent production, has seriously pind down normally carrying out of producing.
The effective way that promotes production efficiency is to reform existing Salt Production technology, develop energy-conservation, low consumption, mineral reserve fully utilize new technology efficiently.
Summary of the invention
The object of the present invention is to provide a kind of sylvite ore to produce the method and apparatus of Industrial Salt fast.
Sylvite ore provided by the invention is produced the method for Industrial Salt fast, comprise the steps: moltenly to adopt sylvite ore and extract bittern, utilize Lowlevel thermal energy that the molten bittern of adopting is heated, and bittern is separated into desalination water and nearly saturated dense bittern, denseer bittern is carried out evaporation concentration; In the evaporating concentration process, at first dense bittern is concentrated into 30～60% of dense bittern original volume, carries out solid-liquid separation, obtain the mixture of sodium-chlor, Repone K and schoenite after the solid phase cooling; Liquid phase continues to be concentrated into 16～43% of dense bittern original volume, and obtaining carnallitite and epsom salt after the solid phase after the solid-liquid separation is cooled off is main mixture; Liquid phase continues to be concentrated into 9～35% of dense bittern original volume again, and obtaining bischofite and epsom salt after the solid phase after the solid-liquid separation is cooled off is main mixture; Last mother liquor is discharged flow process, and water of condensation that produces in the evaporating concentration process and secondary steam heat exchange and cooling back recirculation are back to the molten sylvite ore of adopting, and the heat that is discharged is used to add the bittern of hot smelting exploitation.
Leading ion is Na in the described bittern +, K +, Mg 2+, Cl -, SO 4 2-
Be used to realize that above-mentioned sylvite ore produces the device of Industrial Salt method fast, comprise well heater 1, desalination apparatus 2, vaporizer 3 and interchanger 10; Vaporizer 3 is divided into first heating chamber 4, first evaporator room 5, second heating chamber 6, second evaporator room 7, the 3rd heating chamber 8 and the 3rd evaporator room 9; First heating chamber 4, second heating chamber 6, the 3rd heating chamber 8 are tube shell type structure, and three's heat interchanging area ratio is followed successively by 5～10: 1.5～2.5: 1, and the three interconnects; Among first evaporator room 5, second evaporator room 7 and the 3rd evaporator room 9 swash plate is installed respectively, opening is left in the swash plate upper end, and the swash plate lower end is connected with the outlet of salt slurry; Vaporizer 3 tops are provided with secondary steam outlet and dense bittern import, and the bottom is provided with the mother liquor outlet; First heating chamber, 4 upper ends are provided with the heating steam import; The 3rd heating chamber 8 lower ends are provided with condensation-water drain, and condensation-water drain and vaporizer 3 vertical secondary steam outlets interconnect, and are connected to interchanger 10.
Above-mentioned sylvite ore is produced the device of Industrial Salt fast, and the thermal source of well heater 1 is Lowlevel thermal energies such as sun power, factory's used heat or underground heat.Above-mentioned sylvite ore is produced the device of Industrial Salt fast, and desalination apparatus 2 is membrane distillation device or humidifying-dehumidifying device.
Above-mentioned sylvite ore is produced the operating process of the device of Industrial Salt fast: bittern is warming up to 60～95 ℃ in well heater 1, enters desalination apparatus 2 and is separated into desalination water and nearly saturated dense bittern, and dense bittern enters vaporizer 3; In the vaporizer 3, heating steam is flowed at the shell side of first heating chamber 4, second heating chamber 6, the 3rd heating chamber 8 successively, dense bittern then flows and is heated at tube side, and salt is analysed in the evaporation among first evaporator room 5, second evaporator room 7 and the 3rd evaporator room 9 successively of dense bittern, concentrated also crystallization, formed salt slurry is discharged by the salt slurry outlet of each evaporator room swash plate lower end, analyses the remaining liquid phase of salt and is gone out by the opening overflow of swash plate upper end; The volume of regulating vaporizer 3 bottom mother liquor outlet discharge mother liquors is lower than 9～35% of dense bittern initial volume, then just with first evaporator room 5, liquid phase volume after being concentrated in second evaporator room 7 and the 3rd evaporator room 9 controls to 30～60% of dense bittern initial volume respectively, 16～43% and 9～35%, can get sodium-chlor after the salt slurry cooling that this moment first, evaporator room 5 was discharged, the mixture of Repone K and schoenite, carnallitite can be got after the salt slurry cooling that second evaporator room 7 is discharged and epsom salt is main mixture, and bischofite can be got after the salt slurry cooling that the 3rd evaporator room 9 is discharged and epsom salt is main mixture; Formed water of condensation is discharged by the condensation-water drain of vaporizer 3 bottoms after entering the heating steam condensation of vaporizer 3, the secondary steam of discharging with the outlet of vaporizer 3 top secondary steams forms steam water interface and enters interchanger 10, the fresh water one that desalination water that water coolant after the heat exchange and desalination apparatus 2 discharged and flow process are replenished outward is used from the molten sylvite ore of adopting, and the molten bittern that obtains of adopting returns interchanger 10 and carries out guiding in the well heater 1 after the heat exchange again.
Compared with prior art, advantage of the present invention and effect are:
(1) uses sun power, factory's used heat or underground heat as the energy, help reducing dependence, embody characteristics of energy saving conventional energy resourcess such as oil or coals;
(2) evaporative process is quick, has avoided conventional solar evaporation process to become the slow shortcoming in ore deposit, helps enhancing productivity;
(3) in the production process, fresh water can recycle, and can extract multiple Industrial Salts such as carnallitite, bischofite by stages, has reached the purpose of comprehensive utilization of resources.
Therefore, production efficiency height of the present invention, energy-saving and cost-reducing with the obvious advantage, have broad application prospects.
Description of drawings
Fig. 1 is device and the process flow diagram that sylvite ore of the present invention is produced Industrial Salt fast.
Wherein: the 1-well heater; The 2-desalination apparatus; The 3-vaporizer; 4-first heating chamber; 5-first evaporator room; 6-second heating chamber; 7-second evaporator room; 8-the 3rd heating chamber; 9-the 3rd evaporator room; The 10-interchanger.
Embodiment
Embodiment 1:
The raw materials used sylvite ore of taking from the Caidamu Basin, Qinghai Yanhu District, sylvite ore is carried out the molten bittern that obtains after adopting, and to contain mass percent be 12.53% NaCl, 1.25% KCl, 12.77% MgCl 2, 4.01% Na 2SO 4The device of producing Industrial Salt adopts device shown in Figure 1, and wherein the thermal source of well heater 1 is a sun power, and desalination apparatus 2 is the membrane distillation device.
Sylvite ore is produced the operating process of Industrial Salt device fast: bittern is warming up to 95 ℃ in well heater 1, enters desalination apparatus 2 and is separated into desalination water and nearly saturated dense bittern, and dense bittern enters vaporizer 3; In the vaporizer 3, the heat interchanging area ratio of first heating chamber 4, second heating chamber 6, the 3rd heating chamber 8 was followed successively by 5: 2: 1, heating steam is flowed at the shell side of first heating chamber 4, second heating chamber 6, the 3rd heating chamber 8 successively, dense bittern then flows and is heated at tube side, and salt is analysed in the evaporation among first evaporator room 5, second evaporator room 7 and the 3rd evaporator room 9 successively of dense bittern, concentrated also crystallization, formed salt slurry is discharged by the salt slurry outlet of holding under each evaporator room swash plate, analyses the remaining liquid phase of salt and is gone out by the opening overflow of swash plate upper end; The volume of regulating vaporizer 3 bottom mother liquor outlet discharge mother liquors is 25% of a dense bittern initial volume, also just with first evaporator room 5, liquid phase volume after being concentrated in second evaporator room 7 and the 3rd evaporator room 9 controls to 53% of dense bittern initial volume respectively, 34% and 25%, obtain the mixture of sodium-chlor and schoenite after the salt slurry cooling that this moment first, evaporator room 5 was discharged, obtain carnallitite after the salt slurry cooling that second evaporator room 7 is discharged and epsom salt is main mixture, and obtain bischofite after the salt slurry cooling that the 3rd evaporator room 9 is discharged and epsom salt is main mixture; Formed water of condensation is discharged by the condensation-water drain of vaporizer 3 bottoms after entering the heating steam condensation of vaporizer 3, the secondary steam of discharging with the outlet of vaporizer 3 top secondary steams forms steam water interface and enters interchanger 10, the fresh water one that desalination water that water coolant after the heat exchange and desalination apparatus 2 discharged and flow process are replenished outward is used from the molten sylvite ore of adopting, and the molten bittern that obtains of adopting returns interchanger 10 and carries out guiding in the well heater 1 after the heat exchange again.
The mixture that obtains from first evaporator room 5, second evaporator room 7 and the 3rd evaporator room 9 obtains Industrial Salts such as sodium-chlor, vitriolate of tartar, sodium sulfate, Repone K, magnesium chloride after drying successively.The Industrial Salt total amount that obtains from bittern per ton is 239 kilograms, comprising 106 kilograms in sodium-chlor, 6 kilograms of vitriolate of tartar, 29 kilograms in sodium sulfate, 5 kilograms in Repone K, 93 kilograms in magnesium chloride.
Embodiment 2:
The raw materials used sylvite ore of taking from the Caidamu Basin, Qinghai Yanhu District, sylvite ore is carried out the molten bittern that obtains after adopting, and to contain mass percent be 6.01% NaCl, 7.10% KCl, 10.22% MgCl 2, 6.12% Na 2SO 4The device of producing Industrial Salt adopts device shown in Figure 1, and wherein the thermal source of well heater 1 is factory's used heat, and desalination apparatus 2 is the humidifying-dehumidifying device.
Sylvite ore is produced the operating process of Industrial Salt device fast with embodiment 1, difference is that bittern is warming up to 90 ℃ in well heater 1, the heat interchanging area ratio of first heating chamber 4, second heating chamber 6, the 3rd heating chamber 8 is 10: 2.2: 1 in the vaporizer 3, and the liquid phase volume after being concentrated in first evaporator room 5, second evaporator room 7 and the 3rd evaporator room 9 is controlled to 31%, 16% and 9% of dense bittern initial volume respectively.
The salt slurry that obtains from first evaporator room 5, second evaporator room 7 and the 3rd evaporator room 9 obtains Industrial Salts such as Repone K, sodium-chlor, vitriolate of tartar, sodium sulfate, magnesium chloride after drying successively.The Industrial Salt total amount that obtains from bittern per ton is 215 kilograms, comprising 50 kilograms in Repone K, 36 kilograms in sodium-chlor, 20 kilograms of vitriolate of tartar, 40 kilograms in sodium sulfate, 69 kilograms in magnesium chloride.

Claims (5)

1. a sylvite ore is produced the method for Industrial Salt fast, it is characterized in that, comprise the steps: moltenly to adopt sylvite ore and extract bittern, utilize Lowlevel thermal energy that the molten bittern of adopting is heated, and bittern is separated into desalination water and nearly saturated dense bittern, denseer bittern is carried out evaporation concentration; In the evaporating concentration process, at first dense bittern is concentrated into 30～60% of dense bittern original volume, carries out solid-liquid separation, obtain the mixture of sodium-chlor, Repone K and schoenite after the solid phase cooling; Liquid phase continues to be concentrated into 16～43% of dense bittern original volume, and obtaining carnallitite and epsom salt after the solid phase after the solid-liquid separation is cooled off is main mixture; Liquid phase continues to be concentrated into 9～35% of dense bittern original volume again, and obtaining bischofite and epsom salt after the solid phase after the solid-liquid separation is cooled off is main mixture; Last mother liquor is discharged flow process, and water of condensation that produces in the evaporating concentration process and secondary steam heat exchange and cooling back recirculation are back to the molten sylvite ore of adopting, and the heat that is discharged is used to add the bittern of hot smelting exploitation.
2. sylvite ore as claimed in claim 1 is produced the method for Industrial Salt fast, it is characterized in that, leading ion is Na in the described bittern +, K +, Mg 2+, Cl -, SO 4 2-
3. a sylvite ore is produced the device of Industrial Salt fast, it is characterized in that, comprises well heater (1), desalination apparatus (2), vaporizer (3) and interchanger (10); Vaporizer (3) is divided into first heating chamber (4), first evaporator room (5), second heating chamber (6), second evaporator room (7), the 3rd heating chamber (8) and the 3rd evaporator room (9); First heating chamber (4), second heating chamber (6), the 3rd heating chamber (8) they are tube shell type structure, and three's heat interchanging area ratio is followed successively by 5～10: 1.5～2.5: 1, and the three interconnects; Among first evaporator room (5), second evaporator room (7) and the 3rd evaporator room (9) swash plate is installed respectively, opening is left in the swash plate upper end, and the swash plate lower end is connected with the outlet of salt slurry; Vaporizer (3) top is provided with secondary steam outlet and dense bittern import, and the bottom is provided with the mother liquor outlet; First heating chamber (4) upper end is provided with the heating steam import; The 3rd heating chamber (8) lower end is provided with condensation-water drain, and the vertical secondary steam outlet of condensation-water drain and vaporizer (3) interconnects, and is connected to interchanger (10).
4. sylvite ore as claimed in claim 3 is produced the device of Industrial Salt fast, it is characterized in that, the thermal source of described well heater (1) is sun power, factory's used heat or underground heat.
5. sylvite ore as claimed in claim 3 is produced the device of Industrial Salt fast, it is characterized in that, described desalination apparatus (2) is membrane distillation device or humidifying-dehumidifying device.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103253818A (en) * 2013-04-19 2013-08-21 金逹行有限公司 Seawater desalination, resource comprehensive utilization and zero discharge processing system
CN103626207A (en) * 2012-08-20 2014-03-12 宁波莲华环保科技股份有限公司 Method and device for extracting lithium salt from lithium-containing salt lake bittern
CN105209388A (en) * 2013-03-14 2015-12-30 死海工业有限公司 Process for precipitation of carnallite from aqueous solutions
CN106241839A (en) * 2016-07-20 2016-12-21 青海大学 A kind of separating magnesium, method of reduction Mg/Li ratio from salt lake bittern

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005063625A1 (en) * 2003-12-31 2005-07-14 Council Of Scientific And Industrial Research Simultaneous recovery of potassium chloride and kc1 enriched edible salt
CN101544411A (en) * 2009-05-07 2009-09-30 张培洲 Solar-energy sea water desalination and salt production device
CN101928023A (en) * 2010-09-03 2010-12-29 山西大学 Device and method for preparing lithium carbonate from brine by utilizing solar energy

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005063625A1 (en) * 2003-12-31 2005-07-14 Council Of Scientific And Industrial Research Simultaneous recovery of potassium chloride and kc1 enriched edible salt
CN101544411A (en) * 2009-05-07 2009-09-30 张培洲 Solar-energy sea water desalination and salt production device
CN101928023A (en) * 2010-09-03 2010-12-29 山西大学 Device and method for preparing lithium carbonate from brine by utilizing solar energy

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103626207A (en) * 2012-08-20 2014-03-12 宁波莲华环保科技股份有限公司 Method and device for extracting lithium salt from lithium-containing salt lake bittern
CN103626207B (en) * 2012-08-20 2017-03-29 宁波莲华环保科技股份有限公司 A kind of method and apparatus that lithium salts is extracted from lake bittern water containing lithium salts
CN105209388A (en) * 2013-03-14 2015-12-30 死海工业有限公司 Process for precipitation of carnallite from aqueous solutions
CN105209388B (en) * 2013-03-14 2018-04-03 死海工业有限公司 From the method for water-soluble liquid precipitate carnallite
CN103253818A (en) * 2013-04-19 2013-08-21 金逹行有限公司 Seawater desalination, resource comprehensive utilization and zero discharge processing system
CN106241839A (en) * 2016-07-20 2016-12-21 青海大学 A kind of separating magnesium, method of reduction Mg/Li ratio from salt lake bittern

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