CN206580695U - A kind of utilization magnesium processes desulfurization waste liquor extracts the process equipment of epsom salt - Google Patents
A kind of utilization magnesium processes desulfurization waste liquor extracts the process equipment of epsom salt Download PDFInfo
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- CN206580695U CN206580695U CN201720254223.XU CN201720254223U CN206580695U CN 206580695 U CN206580695 U CN 206580695U CN 201720254223 U CN201720254223 U CN 201720254223U CN 206580695 U CN206580695 U CN 206580695U
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- adlerika
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- desulfurizing tower
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Abstract
A kind of utilization magnesium processes desulfurization waste liquor extracts the process equipment of epsom salt, including：Desulfurizing tower, plate type pressure filter, triple-effect evaporation plant, crystallization reactor, crystal delivery pump and centrifuge dripping device；The desulfurizing tower is connected by slurry discharge pump with plate type pressure filter entrance, the desulfurizing tower is also connected with pulping system and oxidation fan, the air that flue gas is introduced with the slurries of Mg (OH) 2 from pulping system in desulfurizing tower and by oxidation fan carries out pressure oxidation reaction, Adlerika is generated, the plate type pressure filter is expelled to by slurry discharge pump when Adlerika concentration increases to setting numerical value；The Adlerika is delivered to triple-effect evaporation plant through the plate type pressure filter, and the triple-effect evaporation plant is connected to crystallization reactor by Adlerika delivery pump, and the crystallization reactor connects centrifuge dripping device by crystal delivery pump.The technical program solves smoke pollution, while can realize that resource makes full use of, it is to avoid the wasting of resources, the rate of recovery is higher.
Description
Technical field
It is especially a kind of to extract seven water sulfuric acid using magnesium processes desulfurization waste liquor the present invention relates to a kind of magnesium processes sulfurization process facilities
The process equipment of magnesium.
Background technology
Magnesium processes sulfur removal technology begins one's study from nineteen sixty-eight, is succeeded in developing in nineteen eighty-two, in the fortune of existing device in Japan
Industry achievement.The technique has higher desulfuration efficiency, typically more than 90%, and achievement is more abroad, and domestic achievement is mostly
Pump for Medium and Small Power Generating Set.
Magnesium processes sulfur removal technology is absorbent using magnesia or magnesium hydroxide, system mainly by slurrying part, desulfurizing tower,
Seperator is constituted, and flue gas enters desulfurizing tower after deduster, spray desulfurization is carried out in desulfurizing tower, absorbent is by pulping system
Prepare, magnesium hydroxide slurry is squeezed into by slurry supply pump and aoxidized outside desulfurizing tower, Ta Nei or tower, it is fully oxidized after slurries
Separated by seperator, accessory substance magnesium sulfate typically uses and abandons processing.
Epsom salt is a kind of important product, can make chemical fertilizer, can also make cement, construction material etc..Sulfuric acid
Epsom salt in magnesium solution is concentrated, separation, dry after, can obtain epsom salt crystal, it is to avoid solid waste is accumulated.
The content of the invention
In order to overcome in domestic magnesia FGD technique, accessory substance is abandoned, the problems such as producing solid waste, and the utility model is carried
A kind of utilization magnesium processes desulfurization waste liquor has been supplied to extract the process equipment of epsom salt, the invention can improve the utilization rate of absorbent,
Using high-temperature steam evaporate Adlerika, further crystallized using crystallizer, the technology can reduce cost and bring through
Ji benefit.
The technical solution adopted by the present invention is as follows：The technique that a kind of utilization magnesium processes desulfurization waste liquor extracts epsom salt is set
It is standby, including：Desulfurizing tower, plate type pressure filter, triple-effect evaporation plant, crystallization reactor, crystal delivery pump and centrifuge dripping device；Institute
State desulfurizing tower to be connected with plate type pressure filter entrance by slurry discharge pump, the desulfurizing tower is also connected with pulping system and oxidation wind
Machine, the air that flue gas is introduced with the slurries of Mg (OH) 2 from pulping system in desulfurizing tower and by oxidation fan carries out strong
Oxygenerating reacts, and generates Adlerika, is discharged when Adlerika concentration increases to setting numerical value by slurry discharge pump
To the plate type pressure filter；The Adlerika is delivered to triple-effect evaporation plant through the plate type pressure filter, and the triple effect steams
Transmitting apparatus is connected to crystallization reactor by Adlerika delivery pump, the crystallization reactor by crystal delivery pump connect from
Heart spin-drying device.
Further, the triple-effect evaporation plant includes three evaporators and three separators, is circulated using shell and tube
External heat operation principle；Using triple effect evaporator, heated time is short, and evaporation is fast, and evaporation capacity is saved than single effect evaporator.
Further, the plate type pressure filter is filtered to Adlerika, and the plate type pressure filter sets two, institute
State two plate type pressure filters to connect side by side, the plate type pressure filter is also connected with process water flushing pump.Plate type pressure filter filtering surface
Product is big, and flow is big, comparatively fast can preferably complete the filtering to Adlerika.
Further, in addition to refrigeration machine, the refrigeration machine is connected with the crystallization reactor, and its connecting line includes cold
But medium intake line and cooling medium loop.Refrigeration machine can accelerate crystallization rate, set cooling medium to return to returning for refrigeration machine
Road, cooling medium can Reusability.
Further, in addition to Adlerika mother liquor case, the Adlerika mother liquor case and the plate type pressure filter
Outlet connection, and be connected with evaporator charging pump, when Adlerika reaches predetermined in the Adlerika mother liquor case
Afterwards, open the evaporator charging pump and extract epsom salt solution.
The beneficial effects of the invention are as follows：
1) smoke pollution is solved, while can realize that resource makes full use of, it is to avoid the wasting of resources.
2) the epsom salt concentration obtained with the technique is more than 98%, and the rate of recovery is higher.
Brief description of the drawings
Fig. 1 is that desulfurization waste liquor extracts epsom salt system diagram
Fig. 2 is plate type pressure filter system diagram
In figure：1- separators I, 2- evaporators I, 3- separators II, 4- evaporators II, 5- separators III, 6- evaporators III,
7- crystallization reactors, 8- refrigeration machines, 9- cooling medium intake lines, 10- cooling mediums loop, 11- Adlerika mother liquor casees,
12- evaporator charging pumps, 13- crystal delivery pumps, 14- cooling water pumps, the effect circulating pumps of 15- mono-, the effect circulating pumps of 16- bis-, 17- triple effects
Circulating pump, 18- condenses pump, 19- Adlerika delivery pumps, 20- vavuum pumps, 21- plate type pressure filters I, 22- plate type pressure filters
II, 23- plate type pressure filter entrance, the outlet of 24- plate type pressure filters, 25- technique water inlets, 26- plate type pressure filter outlets, 27-
High-temperature steam entrance
Embodiment
Hereinafter, specific embodiment of the utility model is described in detail refer to the attached drawing, it is detailed according to these
Thin description, one of ordinary skill in the art can implement the utility model it can be clearly understood that the utility model.Do not disobeying
In the case of carrying on the back the utility model principle, the feature in each different embodiment can be combined to obtain new embodiment party
Formula, or some of some embodiments feature is substituted, acquisition is other preferred embodiment.
A kind of utilization magnesium processes desulfurization waste liquor extracts the process equipment of epsom salt, including：Desulfurizing tower, plate type pressure filter,
Triple-effect evaporation plant, crystallization reactor 7, crystal delivery pump 13 and centrifuge dripping device；The desulfurizing tower passes through slurry discharge pump
It is connected with plate type pressure filter entrance 23, the desulfurizing tower is also connected with pulping system and oxidation fan, and flue gas is in desulfurizing tower with coming
The air introduced from the slurries of Mg (OH) 2 of pulping system and by oxidation fan carries out pressure oxidation reaction, generates magnesium sulfate
Solution, the plate type pressure filter is expelled to when Adlerika concentration increases to setting numerical value by slurry discharge pump；It is described
Adlerika is delivered to triple-effect evaporation plant through the plate type pressure filter, and the triple-effect evaporation plant is defeated by Adlerika
Pump 19 is sent to be connected to crystallization reactor 7, the crystallization reactor 7 connects centrifuge dripping device by crystal delivery pump 13.
Further, the triple-effect evaporation plant include evaporator I 2, evaporator II 4, III 63 evaporators of evaporator with
And separator I 1, separator II 3, III 53 separators of separator, using the hot operation principle of shell and tube circulation, external and with height
Warm steam inlet 27.
Further, the plate type pressure filter is filtered to Adlerika, and the plate type pressure filter is board-like press filtration
Machine I 21, plate type pressure filter II 22, two plate type pressure filters are connected side by side, and the plate type pressure filter also passes through technique water inlet
25 are connected with process water flushing pump, and the plate type pressure filter is connected into trench by outlet 26.
Further, in addition to refrigeration machine 8, the refrigeration machine 8 is connected with the crystallization reactor 7, its connecting line bag
Include cooling medium intake line 9 and cooling medium loop 10.
Further, in addition to Adlerika mother liquor case 11, the Adlerika mother liquor case 11 and the board-like pressure
Filter outlet 24 is connected, and is connected with evaporator charging pump 12, when Adlerika reaches in the Adlerika mother liquor case 11
To after predetermined, open the evaporator charging pump 12 and extract epsom salt solution.
The process equipment for extracting epsom salt using the magnesium processes desulfurization waste liquor extracts magnesium sulfate, comprises the following steps：
Step one：Flue gas enters desulfurizing tower, and spray desulfurization is carried out in desulfurizing tower, and Mg is made by pulping system in absorbent
(OH) slurries that 2 slurries are squeezed into desulfurizing tower, desulfurizing tower carry out pressure oxidation with the air introduced by oxidation fan, generate sulphur
Sour magnesium solution, is discharged when Adlerika concentration increases to setting numerical value.
Step 2：Reach that the Adlerika of setting concentration in the presence of slurry discharge pump, enters into plate type pressure filter
Row filtering.
Step 3：Adlerika after filtering is evaporated into triple effect evaporation system, separates out it.
Step 4：By crystal delivery pump 13, into centrifuge dripping device, isolate epsom salt crystal and it is entered
Row drying process.
Step 5：Obtain the higher epsom salt crystal of purity.
Aoxidized in step 2 in desulfurizing tower, oxidation fan is set, introduced oxygen in air, increase desulfurizing tower and contain
Amount, makes slurries be aoxidized in desulfurizing tower.
The Adlerika discharged from desulfurizing tower, concentration is 40%, and temperature is 65 DEG C, enters board-like by slurry discharge pump
Filter press, the Adlerika after filtering enters Adlerika mother liquor case by supply pump, enters evaporator I by charging pump
1 is evaporated concentration, it is concentrated after epsom salt separated into separator I 1, do not carried out in an effect vapo(u)rization system
The liquid of evaporation and concentration by charging pump enter two effect vapo(u)rization systems, step ibid, seven water obtained by triple effect evaporation system
Magnesium sulfate enters crystallization reactor, carries out further evaporative crystallization, after enter centrigugal swing dryer by crystal delivery pump, obtain
Epsom salt crystal, purity is 98.2%.
Claims (5)
1. a kind of utilization magnesium processes desulfurization waste liquor extracts the process equipment of epsom salt, it is characterised in that including：Desulfurizing tower, plate
Formula filter press, triple-effect evaporation plant, crystallization reactor, crystal delivery pump and centrifuge dripping device；The desulfurizing tower passes through slurries
Excavationg pump is connected with plate type pressure filter entrance, and the desulfurizing tower is also connected with pulping system and oxidation fan, and flue gas is in desulfurizing tower
The air introduced with the slurries of Mg (OH) 2 from pulping system and by oxidation fan carries out pressure oxidation reaction, generates sulphur
Sour magnesium solution, the plate type pressure filter is expelled to when Adlerika concentration increases to setting numerical value by slurry discharge pump；
The Adlerika is delivered to triple-effect evaporation plant through the plate type pressure filter, and the triple-effect evaporation plant is molten by magnesium sulfate
Liquid delivery pump is connected to crystallization reactor, and the crystallization reactor connects centrifuge dripping device by crystal delivery pump.
2. a kind of utilization magnesium processes desulfurization waste liquor as claimed in claim 1 extracts the process equipment of epsom salt, its feature exists
In the triple-effect evaporation plant includes three evaporators and three separators, using the hot operation principle of shell and tube circulation, external.
3. a kind of utilization magnesium processes desulfurization waste liquor as claimed in claim 1 extracts the process equipment of epsom salt, its feature exists
In the plate type pressure filter is filtered to Adlerika, and the plate type pressure filter sets two, described two board-like press filtrations
Machine is connected side by side, and the plate type pressure filter is also connected with process water flushing pump.
4. a kind of utilization magnesium processes desulfurization waste liquor as claimed in claim 1 extracts the process equipment of epsom salt, its feature exists
In in addition to refrigeration machine, the refrigeration machine is connected with the crystallization reactor, and its connecting line includes cooling medium intake line
With cooling medium loop.
5. a kind of utilization magnesium processes desulfurization waste liquor as claimed in claim 1 extracts the process equipment of epsom salt, its feature exists
In, in addition to Adlerika mother liquor case, the Adlerika mother liquor case is connected with plate type pressure filter outlet, and with steaming
The connection of device charging pump is sent out, after Adlerika reaches predetermined in the Adlerika mother liquor case, the evaporation is opened
Device charging pump extracts epsom salt solution.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720254223.XU CN206580695U (en) | 2017-03-16 | 2017-03-16 | A kind of utilization magnesium processes desulfurization waste liquor extracts the process equipment of epsom salt |
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| CN201720254223.XU CN206580695U (en) | 2017-03-16 | 2017-03-16 | A kind of utilization magnesium processes desulfurization waste liquor extracts the process equipment of epsom salt |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889099A (en) * | 2018-08-06 | 2018-11-27 | 山东艾凯恩环保工程有限公司 | A kind of circulation magnesium processes desulfurization of steam source and magnesium sulfate preparation system and method |
-
2017
- 2017-03-16 CN CN201720254223.XU patent/CN206580695U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889099A (en) * | 2018-08-06 | 2018-11-27 | 山东艾凯恩环保工程有限公司 | A kind of circulation magnesium processes desulfurization of steam source and magnesium sulfate preparation system and method |
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