CN205687575U - A kind of processing means of wet magnesium oxide desulphurization by-product - Google Patents
A kind of processing means of wet magnesium oxide desulphurization by-product Download PDFInfo
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- CN205687575U CN205687575U CN201620551187.9U CN201620551187U CN205687575U CN 205687575 U CN205687575 U CN 205687575U CN 201620551187 U CN201620551187 U CN 201620551187U CN 205687575 U CN205687575 U CN 205687575U
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- centrifuge
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Abstract
This utility model provides the processing means of a kind of wet magnesium oxide desulphurization by-product, relating to the separation of gas and the chemical cleaning method technical field of flue gas, this utility model includes sulfuric acid gauge tank (1), condensing crystallizing groove (2), centrifuge (3), mother liquor tank (4), fluid bed (5), dust-precipitator (6) and discharging mechanism (7)；Sulfuric acid gauge tank (1) connects with condensing crystallizing groove (2), condensing crystallizing groove (2) is connected to centrifuge (3) and mother liquor tank (4), mother liquor tank (4) is back to again condensing crystallizing groove (2), and centrifuge (3), fluid bed (5), dust-precipitator (6) and discharging mechanism (7) are sequentially connected simultaneously；This utility model significantly improves oxidation rate and the coefficient of oxygen utilization of sulfurous acid, and comprehensive utilization value is high, and subsequent treatment is the most perfect, the problem solving secondary pollution.
Description
Technical field
This utility model relates to the separation of gas and the chemical cleaning method technical field of flue gas, is specifically related to a kind of utilization and aoxidizes
The aftertreatment device of magnesium desulfurizing byproduct.
Background technology
The tail gas produced in sulphuric acid process, its harmful components are mainly sulfur dioxide and fumes of sulphuric acid, and they are not only
Human body is produced high risks with animals and plants, and the corrosion of surrounding metal equipment and building can also be caused, therefore, the most excellent
Change technical scheme, reduction resource consumption, minimizing environmental pollution are the problems that must think better of in Chemical Manufacture.
In order to avoid by sulfur oxides emissions to air, relevant manufacturers is typically to utilize the mode of magnesium processes exhaust gas desulfurization,
After sulphur-containing exhaust gas is collected, use exhaust gas desulfurization equipment, waste gas is sufficiently mixed with magnesium oxide solution, magnesium oxide in absorption tower
Solution absorbs the SO in flue gas2Reaction generates inferior sulfate radical, and inferior sulfate radical is oxidized to sulfate radical the most further, sulfate radical with
Magnesium oxide or the reaction of its light oxide generate magnesium sulfate, magnesium sulfite, and containing magnesium sulfate, the high concentration liquid of magnesium sulfite
It is just to discharge after simple process, the problem often causing secondary pollution.
Magnesium oxide method wet type desulfurizing technology is suitable for for both economical for sulfur-containing smoke gas, its by-product magnesium sulfite or sulfur
Acid magnesium comprehensive utilization value is high, can utilize as fertilizer, raw material；May also pass through calcining production magnesium oxide to reclaim, and simultaneously
Generating the sulfur dioxide gas of extracting sulfuric acid, wet magnesium oxide desulphurization by-product has higher recovery value, currently also has one
A bit for retracting device and the method for this side-product.
Such as " 201520802086.X magnesium processes desulfurization zero emission recovering system ", provides a kind of magnesium processes desulfurization zero-emission to reclaim
System, comprises a magnesium processes exhaust gas desulfurization module, a solid-liquid separation module, a mother solution temporary storage module, an evaporation separation module and
Crystallization packaging module.Magnesium processes exhaust gas desulfurization module is to give up with the sulfur-bearing that discharged of magnesium hydroxide aqueous solution removing steam-electric accreting factory
Sulfur in gas, and produce a magnesium sulfate waste water solution.Solid-liquid separation module is to be communicated in magnesium processes exhaust gas desulfurization module, to receive sulfur
Acid magnesium waste water solution, and isolate a magnesium sulfate mother solution.Mother solution temporary storage module is to be communicated in solid-liquid separation module.Evaporation splitting die
Block is to be communicated in mother solution temporary storage module, so that magnesium sulfate mother liquor concentrations to become a high-concentration sulfuric acid magnesium solution.Crystallization packaging module is
It is communicated in evaporation separation module, so that magnesium sulfate crystallization produced by cooled for high-concentration sulfuric acid magnesium solution being dried is packaged into bag.
And " apparatus and method of 201410718548.X fire coal boiler fume production magnesium sulfate ", it is provided that one is applicable to coal-burning boiler
In the magnesium oxide method desulfurization waste liquor tower of the flue gas that the oxygen contents such as flue gas are few, direct crystallization produces the device and method of magnesium sulfate, bag
Include oxygen increasing equipment, flue gas desulfurization device, serum recycle equipment, evaporation concentration equipment, circulation precipitation apparatus, oxidation furnaces, crystallization
Equipment, centrifugation apparatus, drying equipment etc..But all there is flow process in above two scheme and equipment is complicated, the high deficiency of use cost.
In addition, it is necessary to magnesium sulfite is oxidized to magnesium sulfate with this part resource of efficient recovery, it is achieved magnesium sulfite adds deeply
Work, promotes its using value, and magnesium sulfite oxidation preparing magnesium sulfate many employings aeration agitation oxygen supply, coefficient of oxygen utilization is low, and oxidation is not
Fully, particularly after in solution, magnesium sulfate content reaches higher concentration, coefficient of oxygen utilization and oxidation effectiveness are all decreased obviously, and
Realize magnesium sulfate concentration and improve the oxygen amount of needs further and energy consumption is all greatly increased.
Summary of the invention
For solving problems of the prior art, this utility model provides a kind of wet magnesium oxide desulphurization by-product
Processing means, uses the side-product i.e. desulfurization slip after magnesium oxide method desulfurization as raw material, obtains the Magnesium sulfate heptahydrate of agricultural grade
Product, this apparatus structure is simple, and operational efficiency high energy consumption is low, can effectively reduce the big row of magnesium sulfate containing waste water after magnesium oxide method desulfurization
Put, reduce the impact on environment.
For achieving the above object, this utility model is by the following technical solutions: a kind of wet magnesium oxide desulphurization by-product
Processing means, including sulfuric acid gauge tank 1, condensing crystallizing groove 2, centrifuge 3, mother liquor tank 4, fluid bed 5, dust-precipitator 6 and discharge
Mechanism 7；Sulfuric acid gauge tank 1 connects with condensing crystallizing groove 2, and condensing crystallizing groove 2 is connected to centrifuge 3 and mother liquor tank 4, mother liquor tank 4
Being back to again condensing crystallizing groove 2, centrifuge 3, fluid bed 5, dust-precipitator 6 and discharging mechanism 7 are sequentially connected simultaneously.
Described sulfuric acid gauge tank 1 one end arranges concentrated sulphuric acid feed tube 101, and the other end is connected to condensing crystallizing groove by pipeline
In 2.
Described condensing crystallizing groove 2 is internally provided with cooling coil 201, and is provided with cooling water inlet pipe 202 and outlet pipe
203 are attached thereto, and are additionally provided with desulfurization slurry feed pipe 204 simultaneously, are provided with slurry agitation mechanism in condensing crystallizing groove 2, and
Centrifuge 3 is delivered to by being arranged on discharge nozzle 205 the sufficient slurry of reaction of bottom.
Described centrifuge 3 is connected with fluid bed 5 and mother liquor tank 4 respectively, and the slurry of liquid is carried out solid-liquid and divides by centrifuge 3
From, solid matter is delivered in fluid bed 5 by conveyer device, and the saturated solution after separating is collected in mother liquor tank 4, and passes through
The return duct 401 being arranged on mother liquor tank 4 returns to participate in condensing crystallizing groove 2 reaction.
Be provided with on described fluid bed 5 conveying pipeline 501, air supply pipe 502, removable pre-coated layer 503, drainage conduit 504 and
Exhaustor 505；Fluid bed 5 is received the solid matter separated by the conveying pipeline 501 being connected on centrifuge 3 and is laid in and can move
On dynamic pre-coated layer 503, air supply pipe 502 introduces and is dried gas from bottom to top through the solid matter of the random occupied state of granule, gas
When Flow Velocity meets or exceeds the critical fludization velocity of granule, on removable pre-coated layer 503, the granule in solid matter turns over up and down
Rising, and then be dried by solid matter, enter metering packing device 8 from drainage conduit 504 afterwards, dried gas passes through exhaustor
505 enter dust-precipitator 6, and are discharged by discharging mechanism 7.
Described dust-precipitator 6 is sack cleaner.
Described discharging mechanism 7 includes air-introduced machine 701 and smoke exhaust pipe 702 in communication.
Basic procedure when this device uses is: in magnesium oxide method desulfurizing device, the desulfurization slip of size circulations groove send
After condensing crystallizing groove 2, adding a certain amount of concentrated sulphuric acid regulation slip pH value to 4.0 from sulfuric acid gauge tank 1, and it is dense to control slurry
Degree is 1370Kg/m3, stirring 30 minutes, be allowed to fully react, when temperature reaches 30 DEG C, deliver to centrifuge 3 and separate, mother solution returns
Return condensing crystallizing groove 2 continue to participate in reaction, solid in fluid bed 5 after the hot air drying of 50 DEG C～55 DEG C metering packing obtain
The Magnesium sulfate heptahydrate product of agricultural grade, dry-heat air discharges after sack cleaner filters.
This utility model solves the content of magnesium sulfate in the by-product solution that flue gas desulfurization by magnesia wet method produces, aobvious
Writing oxidation rate and the coefficient of oxygen utilization improving sulfurous acid, comprehensive utilization value is high, forces oxidation to generate magnesium sulfate magnesium sulfite,
Side-product is finally sold with Magnesium sulfate heptahydrate, and it applies relatively wide at food, chemical industry, medicine, a lot of aspect of agricultural, market demand
The biggest；Subsequent treatment is the most perfect, the problem solving secondary pollution.
Accompanying drawing explanation
Fig. 1 is the structural representation of the processing means of wet magnesium oxide desulphurization by-product described in the utility model.
In figure, sulfuric acid gauge tank 1, concentrated sulphuric acid feed tube 101, condensing crystallizing groove 2, cooling coil 201, cooling water inlet pipe
202, outlet pipe 203, desulfurization slurry feed pipe 204, discharge nozzle 205, centrifuge 3, mother liquor tank 4, return duct 401, fluid bed 5,
Conveying pipeline 501, air supply pipe 502, removable pre-coated layer 503, drainage conduit 504, exhaustor 505, dust-precipitator 6, discharging mechanism 7, draw
Blower fan 701, smoke exhaust pipe 702, metering packing device 8.
Detailed description of the invention
Below in conjunction with the accompanying drawings and explanation the present invention is further described.
As it is shown in figure 1, the processing means of a kind of wet magnesium oxide desulphurization by-product, including sulfuric acid gauge tank 1, condensing crystallizing
Groove 2, centrifuge 3, mother liquor tank 4, fluid bed 5, dust-precipitator 6 and discharging mechanism 7；Sulfuric acid gauge tank 1 is with condensing crystallizing groove 2 even
Logical, condensing crystallizing groove 2 is connected to centrifuge 3 and mother liquor tank 4, and mother liquor tank 4 is back to again condensing crystallizing groove 2, simultaneously centrifuge 3,
Fluid bed 5, dust-precipitator 6 and discharging mechanism 7 are sequentially connected；Described dust-precipitator 6 is sack cleaner；Described discharging mechanism 7 wraps
Include air-introduced machine 701 and smoke exhaust pipe 702 in communication.
Described sulfuric acid gauge tank 1 one end arranges concentrated sulphuric acid feed tube 101, and the other end is connected to condensing crystallizing groove by pipeline
In 2；Described condensing crystallizing groove 2 is internally provided with cooling coil 201, and be provided with cooling water inlet pipe 202 and outlet pipe 203 with
Connected, it is additionally provided with desulfurization slurry feed pipe 204 simultaneously, in condensing crystallizing groove 2, is provided with slurry agitation mechanism, and by setting
Put the sufficient slurry of reaction of the discharge nozzle 205 in bottom and deliver to centrifuge 3；Described centrifuge 3 respectively with fluid bed 5 and mother solution
Groove 4 connects, and the slurry of liquid is carried out solid-liquid separation by centrifuge 3, and solid matter is delivered in fluid bed 5 by conveyer device, and
Saturated solution after separation is collected in mother liquor tank 4, and returns to concentrate knot by the return duct 401 being arranged on mother liquor tank 4
Brilliant groove 2 participates in reaction；Conveying pipeline 501, air supply pipe 502, removable pre-coated layer 503, drainage conduit it is provided with on described fluid bed 5
504 and exhaustor 505；Fluid bed 5 is received the solid matter separated by the conveying pipeline 501 being connected on centrifuge 3 and is put down
Being layered on removable pre-coated layer 503, air supply pipe 502 introduces and is dried gas from bottom to top through the solid-state of the random occupied state of granule
Material, when air velocity meets or exceeds the critical fludization velocity of granule, the granule in solid matter on removable pre-coated layer 503
Seething up and down, and then be dried by solid matter, enter metering packing device 8 from drainage conduit 504 afterwards, dried gas passes through
Exhaustor 505 enters dust-precipitator 6, and is discharged by discharging mechanism 7.
Claims (3)
1. the processing means of a wet magnesium oxide desulphurization by-product, it is characterised in that include sulfuric acid gauge tank (1), concentrate knot
Brilliant groove (2), centrifuge (3), mother liquor tank (4), fluid bed (5), dust-precipitator (6) and discharging mechanism (7)；Sulfuric acid gauge tank (1)
Connecting with condensing crystallizing groove (2), condensing crystallizing groove (2) is connected to centrifuge (3) and mother liquor tank (4), and mother liquor tank (4) is back to again
Condensing crystallizing groove (2), centrifuge (3), fluid bed (5), dust-precipitator (6) and discharging mechanism (7) are sequentially connected simultaneously；
Described sulfuric acid gauge tank (1) one end arranges concentrated sulphuric acid feed tube (101), and the other end is connected to condensing crystallizing groove by pipeline
(2) in；
Described condensing crystallizing groove (2) is internally provided with cooling coil (201), and is provided with cooling water inlet pipe (202) and water outlet
Pipe (203) is attached thereto, and is additionally provided with desulfurization slurry feed pipe (204) simultaneously, and condensing crystallizing groove is provided with slurry agitation in (2)
Mechanism, and deliver to centrifuge (3) by being arranged on the discharge nozzle (205) of bottom reacting sufficient slurry；
Described centrifuge (3) is connected with fluid bed (5) and mother liquor tank (4) respectively, and the slurry of liquid is carried out solid-liquid by centrifuge (3)
Separating, solid matter is delivered in fluid bed (5) by conveyer device, and the saturated solution after separating is collected in mother liquor tank (4),
And return to condensing crystallizing groove (2) participates in reaction by the return duct (401) being arranged on mother liquor tank (4)；
Conveying pipeline (501), air supply pipe (502), removable pre-coated layer (503), drainage conduit it is provided with on described fluid bed (5)
And exhaustor (505) (504)；Fluid bed (5) receives consolidating of separation by the conveying pipeline (501) being connected on centrifuge (3)
State material is also laid on removable pre-coated layer (503), and it is random through granule from bottom to top that air supply pipe (502) introduces dry gas
The solid matter of occupied state, when air velocity meets or exceeds the critical fludization velocity of granule, on removable pre-coated layer (503)
Granule in solid matter seethes up and down, and then is dried by solid matter, enters metering packing device from drainage conduit (504) afterwards
(8), dried gas enters dust-precipitator (6) by exhaustor (505), and is discharged by discharging mechanism (7).
The processing means of a kind of wet magnesium oxide desulphurization by-product the most according to claim 1, it is characterised in that described receipts
Dirt device (6) is sack cleaner.
The processing means of a kind of wet magnesium oxide desulphurization by-product the most according to claim 1 and 2, it is characterised in that institute
State discharging mechanism (7) and include air-introduced machine (701) and smoke exhaust pipe (702) in communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620551187.9U CN205687575U (en) | 2016-06-08 | 2016-06-08 | A kind of processing means of wet magnesium oxide desulphurization by-product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620551187.9U CN205687575U (en) | 2016-06-08 | 2016-06-08 | A kind of processing means of wet magnesium oxide desulphurization by-product |
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| CN205687575U true CN205687575U (en) | 2016-11-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744940A (en) * | 2018-04-24 | 2018-11-06 | 北京北科环境工程有限公司 | A kind of desulfurizing byproduct oxidation unit |
-
2016
- 2016-06-08 CN CN201620551187.9U patent/CN205687575U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744940A (en) * | 2018-04-24 | 2018-11-06 | 北京北科环境工程有限公司 | A kind of desulfurizing byproduct oxidation unit |
| CN108744940B (en) * | 2018-04-24 | 2023-10-20 | 北京北科环境工程有限公司 | Desulfurization by-product oxidation device |
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