CN209193567U - The device of desulfurizer regeneration by-product sulphur simultaneously in a kind of magnesium processes desulfurization - Google Patents
The device of desulfurizer regeneration by-product sulphur simultaneously in a kind of magnesium processes desulfurization Download PDFInfo
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- CN209193567U CN209193567U CN201822059910.3U CN201822059910U CN209193567U CN 209193567 U CN209193567 U CN 209193567U CN 201822059910 U CN201822059910 U CN 201822059910U CN 209193567 U CN209193567 U CN 209193567U
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Abstract
The utility model relates to desulfurizer regeneration in a kind of magnesium processes desulfurization while the devices of by-product sulphur, including magnesium sulfite warehouse, fluidized bed calcination unit, fluidized bed carbon thermal reduction unit and sulphur recovery unit, the fluidized bed calcination unit includes fluidized bed calcination furnace, calcining furnace high-temperature separator and incinerator, magnesium sulfite warehouse is connect with the lower part of fluidized bed calcination furnace, the bottom of fluidized bed calcination furnace connects incinerator, the top decomposition gas outlet connection calcining furnace high-temperature separator of fluidized bed calcination furnace, the fluidized bed carbon thermal reduction unit includes fluidized bed carbon thermal reduction tower and reduction tower high-temperature separator, the bottom of de-magging decomposition gas outlet connection fluidized bed carbon thermal reduction tower at the top of calcining furnace high-temperature separator, the also Primordial Qi outlet connection reduction tower high-temperature separator of fluidized bed carbon thermal reduction top of tower, restore tower high-temperature separator and magnesium sulfite Warehouse connection, magnesium sulfite resolution ratio are greater than 99%, and Recovered sulphur purity reaches 99.7% or more.
Description
Technical field
The utility model belongs to trade waste and administers field, and in particular to desulfurizer regeneration is simultaneously in a kind of magnesium processes desulfurization
The device of by-product sulphur.
Background technique
Magnesia FGD technology is the sulfur removal technology that a kind of maturity is only second to calcium method, is widely used.The pair of magnesium processes desulfurization
Product is magnesium sulfite, and the method for by-product resource is mainly oxidized to magnesium sulfate at present and calcining is magnesia circulation benefit
With.Calcination method is a kind of ideal method, passes through recycling for desulfurizing agent, it is possible to reduce the exploitation of magnesia reduces
Natural environment destroys.The SO of calcined generation2It is used to prepare sulfuric acid, however coal-burning power plant's sulfuric acid can not be applied, near
If lossless acid enterprise, the sulfuric acid storage transport produced is more difficult.
Sulphur is a kind of Sulphur ressource that China is more short, has wide purposes, value height, storage convenient transportation compared to sulfuric acid
Advantage.And in magnesium processes desulfurization, sulphur can be used as the use of the antioxidant in sweetening process.
Utility model content
For above-mentioned problems of the prior art, a purpose of the utility model is to provide in a kind of magnesium processes desulfurization
The method and device of desulfurizer regeneration while by-product sulphur.
In order to solve the above technical problems, the technical solution of the utility model are as follows:
The device of desulfurizer regeneration by-product sulphur simultaneously in a kind of magnesium processes desulfurization, including magnesium sulfite warehouse, fluidized bed are forged
Unit, fluidized bed carbon thermal reduction unit and sulphur recovery unit, the fluidized bed calcination unit is burnt to include fluidized bed calcination furnace, forge
It burns furnace high-temperature separator and incinerator, magnesium sulfite warehouse is connect with the lower part of fluidized bed calcination furnace, the bottom of fluidized bed calcination furnace
Portion connects incinerator, the top decomposition gas outlet connection calcining furnace high-temperature separator of fluidized bed calcination furnace, the fluidized bed carbon heat
Reduction unit includes fluidized bed carbon thermal reduction tower and reduction tower high-temperature separator, and the de-magging at the top of calcining furnace high-temperature separator decomposes
The bottom of gas outlet connection fluidized bed carbon thermal reduction tower, the also Primordial Qi outlet connection reduction tower height of fluidized bed carbon thermal reduction top of tower
Warm separator, reduction tower high-temperature separator are connect with magnesium sulfite warehouse, and magnesium sulfite warehouse connects sulphur recovery unit.
The by-product magnesium sulfite of the desulfurization of the application is incinerated under the flue gas of furnace and decomposes, and obtains magnesia and dioxy
Change sulphur gas, de-magging decomposition gas is reduced to sulphur steam by fluidized bed carbon thermal reduction tower, and also the carbon dust after Primordial Qi separation returns to
Fluidized bed carbon thermal reduction tower is utilized again, and the raw material in decarburization also Primordial Qi heating magnesium sulfite warehouse is conducive to sulfurous
The decomposition of sour magnesium, calcium method sulfur removal technology compared with the prior art, the sulphur that the application is prepared have preferably application, fortune
Defeated convenience, magnesium sulfite recovery method whole device compared with the prior art realize the recycling of thermal energy, while the application
Calcination method is combined with incinerator, can either facilitate the pyrolytic of magnesium sulfite, while having carried out the purification of flue gas.
The magnesium sulfite includes a small amount of magnesium sulfate.
Preferably, calcining furnace high-temperature separator bottom connects air preheater, and the air preheater is by inside
Cooling space and external heating space composition, it is cold that the separation gas outlet of calcining furnace high-temperature separator bottom enters air preheater
But space.
It is further preferred that air enters the top of air preheater heating space, under air preheater heating space
Portion connects incinerator, the desulphurization system of the bottom connection of air preheater cooling space out-of-bounds.
Air preheater is combined with incinerator, then combustion-supporting using the energy heats combustion air of air preheater
Air enters incinerator, is conducive to improve the temperature in incinerator, realizes the recycling of thermal energy.
Preferably, it restores between the bottom of tower high-temperature separator and the lower part of fluidized bed carbon thermal reduction tower and is connected by chute
It connects.
It is further preferred that the intermediate of the chute connects lower hopper, the chute is close to reduction tower high-temperature separator one
Side connection row's carbon pipeline, the carbon dust of row's carbon pipeline are sent to magnesium sulfite warehouse.
Still more preferably, the chute is connect with lower hopper pipeline, row's carbon pipeline, chute is close to fluidized bed carbon warm
Lock gas batcher is respectively set in the pipeline of reduction tower.
The carbon dust that the chute realizes separation automatically returns to fluidized bed carbon thermal reduction tower, partially loses the carbon of reactivity
Magnesium sulfite warehouse is sent in powder discharge.
Preferably, heat exchanger is arranged in the inside of the magnesium sulfite warehouse, and the top of the reduction tower high-temperature separator is de-
Carbon also Primordial Qi outlet connects the gas feed of the heat exchanger.
It is further preferred that setting lock gas on the pipeline that the bottom of the magnesium sulfite warehouse is connect with fluidized bed calcination furnace
Batcher.
Using the waste-heat magnesium sulfite of also Primordial Qi, the temperature of magnesium sulfite is improved, the high temperature of magnesium sulfite is conducive to
It decomposes.
Preferably, the sulphur recovery unit includes second level gas-solid separator, sulfur condenser, the second level gas solid separation
The bottom of device connects sulfur condenser.
It is further preferred that sulphur storage tank is arranged in the bottom of the sulfur condenser, the side wall lack of gas of sulfur condenser go out
Mouth is connect with desulphurization system out-of-bounds.
The utility model has the beneficial effects that
The utility model proposes a kind of magnesium processes desulfurization in desulfurizer regeneration simultaneously by-product sulphur device, pass through magnesia
The by-product magnesium sulfite of method sulfur removal technology is calcined, and obtaining has desulphurizing activated magnesia and high concentration SO2Gas.And in carbon
It heat-treats in tower using carbon dust as reducing agent, by accurately controlling regeneration condition and carbothermic reduction reaction condition, realizes sulphur resource
Change recycling.The technique realizes desulfurizer regeneration and sulphur recovery, has a vast market application prospect；
Heat exchanger tube is set in the application magnesium sulfite warehouse, realizes the preheating of magnesium sulfite, preferably realizes sulfurous
The pyrolytic of sour magnesium, combustion air are added in air preheater heating space, preferably realize what incinerator obtained
The flue gas of high-temperature flue gas, incinerator obtains decomposition gas in conjunction with the decomposition product of magnesium sulfite, it can sub- using flue gas
Magnesium sulfate, while realizing during circulation the cooling and post-processing of incinerator smoke；Simultaneously in the flue gas of incinerator
Also Primordial Qi also has certain reduction in fluidized bed carbon thermal reduction tower, also eliminates the ingredient in the flue gas of a part,
It is subsequent condense sulphur during, most water is eliminated, so this process also contributes to purifying smoke, then
Remaining lack of gas enter desulphurization system and are post-processed；
The magnesium sulfite resolution ratio of the application is greater than 99%, SO2Conversion ratio and sulphur yield are respectively 90~98% and 88
~95%, Recovered sulphur purity reaches 99.7% or more, meets industrial sulphur Grade A standard.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is desulfurizer regeneration while by-product sulphur flow sheet in magnesium processes desulfurization；
1 in figure, magnesium sulfite warehouse, 2, incinerator, 3, fluidized bed calcination furnace, 4, calcining furnace high-temperature separator, 5, air
Preheater, 6, fluidized bed carbon thermal reduction tower, 7, reduction tower high-temperature separator, 8, lower hopper, 9, second level gas-solid separator, 10, sulphur
Sulphur condenser, 11, molten sulfur storage tank.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Below with reference to embodiment, the present invention will be further described
Embodiment 1
The device of desulfurizer regeneration by-product sulphur simultaneously in a kind of magnesium processes desulfurization, including magnesium sulfite warehouse 1, fluidized bed are forged
Burn unit, fluidized bed carbon thermal reduction unit and sulphur recovery unit, the fluidized bed calcination unit include fluidized bed calcination furnace 3,
Calcining furnace high-temperature separator 4 and incinerator 2, magnesium sulfite warehouse 1 are connect with the lower part of fluidized bed calcination furnace 3, fluidized bed calcination
The bottom of furnace 3 connects incinerator 2, and the top decomposition gas outlet connection calcining furnace high-temperature separator 4 of fluidized bed calcination furnace 3 is described
Fluidized bed carbon thermal reduction unit includes fluidized bed carbon thermal reduction tower 6 and reduction tower high-temperature separator 7, calcining furnace high-temperature separator 7
The bottom of the de-magging decomposition gas outlet connection fluidized bed carbon thermal reduction tower 6 at top, the also Primordial Qi at 6 top of fluidized bed carbon thermal reduction tower
Outlet connection reduction tower high-temperature separator 7, reduction tower high-temperature separator 7 are connect with magnesium sulfite warehouse 1, magnesium sulfite warehouse 1
Connect sulphur recovery unit.
The magnesium sulfite includes a small amount of magnesium sulfate.
4 bottom of calcining furnace high-temperature separator connects air preheater 5, and the air preheater 5 is by internal cooling
Space and external heating space composition, it is cooling that the separation gas outlet of 4 bottom of calcining furnace high-temperature separator enters air preheater
Space.
Air enters the top of air preheater heating space, and the lower part of air preheater heating space connects incinerator,
The desulphurization system of the bottom connection of air preheater cooling space out-of-bounds.
It restores and is connected between the bottom of tower high-temperature separator 7 and the lower part of fluidized bed carbon thermal reduction tower 6 by chute.
The intermediate of the chute connects lower hopper 8, and the chute is close to reduction 7 side of tower high-temperature separator connection row's carbon pipe
Road, the carbon dust of row's carbon pipeline are sent to magnesium sulfite warehouse 1.
Pipeline that the chute is connect with lower hopper 8, row's carbon pipeline, pipeline of the chute close to fluidized bed carbon thermal reduction tower 7
Lock gas batcher is respectively set.
Heat exchanger, the top decarburization reduction of the reduction tower high-temperature separator 7 is arranged in the inside of the magnesium sulfite warehouse 1
Gas outlet connects the gas feed of the heat exchanger.
Setting lock gas batcher on the pipeline that the bottom of the magnesium sulfite warehouse 1 is connect with fluidized bed calcination furnace 3.
The sulphur recovery unit includes second level gas-solid separator 9, sulfur condenser 10, the second level gas-solid separator 9
Bottom connect sulfur condenser 10.
The bottom of the sulfur condenser 10 is arranged sulphur storage tank 11, the side wall lack of gas outlet of sulfur condenser 10 with out-of-bounds
Desulphurization system connection.
Embodiment 2
The method for carrying out desulfurizer regeneration while by-product sulphur using above-mentioned apparatus, specific steps are as follows:
1) desulfurization side product magnesium sulfite enters fluidized bed calcination furnace progress fluidizing calcination, and magnesium sulfite is in incinerator
Pyrolytic is carried out under the heating of flue gas, decomposition gas is by the isolated MgO of calcining furnace high-temperature separator in air preheater
The interior desulphurization system that returns after cooling recycles, and obtained de-magging decomposition gas enters fluidized bed carbon thermal reduction tower；
2) de-magging decomposition gas carries out fluidization reaction with carbon dust in fluidized bed carbon thermal reduction tower, the reduction after carbon thermal reduction
Gas enters reduction tower high-temperature separator and carries out gas solid separation, and the reaction was continued by chute return fluidized bed carbon thermal reduction tower for carbon dust,
Decarburization also Primordial Qi successively enters second level gas-solid separator, sulfur condenser, in sulphur condensation after the heat exchange of magnesium sulfite warehouse
Device is cooling to be precipitated liquid-state sulfur, and the lack of gas after separating sulphur are discharged after being sent into desulfurizing tower processing；
3) the high-temperature oxydation magnesium heat exchange in the combustion air and air preheater of magnesium sulfite fluidizing calcination, after being heated
Into incinerator, the flue gas of generation enters fluidized bed calcination furnace and magnesium sulfite exchanges heat.
Preferably, the temperature in the step 1) in fluidized bed calcination furnace is 650-900 DEG C, and the de-magging decomposition gas is
N2、SO2、CO2、H2O、O2Deng gaseous mixture, SO in de-magging decomposition gas2Concentration is 30~40%, the temperature of the de-magging decomposition gas
It is 650-900 DEG C.
It preferably, is 500-550 DEG C by the temperature of air preheater magnesia after cooling in the step 1).
Preferably, the temperature in the step 2) in fluidized bed carbon thermal reduction tower is 600-1000 DEG C ,/SO2Molar ratio 10-
100,4-8 meters of gas velocity, gas-solid contact time 2-12s in tower in tower, also the temperature of Primordial Qi is 600-900 DEG C.
Preferably, decarburization also Primordial Qi N in the step 2)2、CO2, sulphur steam, SO2、CO、H2、CO2And H2The mixing of O etc.
Object.
Preferably, the carbon dust in the step 2) in fluidized bed carbon thermal reduction tower is coal dust or coke powder, 60 μm of -3mm of partial size.
Preferably, temperature of the decarburization also Primordial Qi after the heat exchange of magnesium sulfite warehouse is 300-400 DEG C in the step 2).
Preferably, decarburization also Primordial Qi is cooled to 120-160 DEG C in sulfur condenser in the step 2).
Preferably, combustion air is heated to 300-400 DEG C in air preheater in the step 3), burns outlet of still
Flue-gas temperature be 1000-1200 DEG C.
Embodiment 3
The method for carrying out desulfurizer regeneration while by-product sulphur using the device of embodiment 1, specific steps are as follows:
1) desulfurization side product magnesium sulfite enters the progress fluidizing calcination of fluidized bed calcination furnace 3, and magnesium sulfite is in incinerator 2
Flue gas be heated to 750 DEG C of progress pyrolytics, decomposition gas is by the isolated MgO of calcining furnace high-temperature separator 4 in sky
It is recycled in air preheater by cooling to 520 DEG C of return desulphurization systems, 750 DEG C of obtained de-magging decomposition gas enter stream
Change bed carbon thermal reduction tower 6, de-magging decomposition gas is N2、SO2、CO2、H2O、O2Deng gaseous mixture；
2) de-magging decomposition gas carries out fluidization reaction with carbon dust in fluidized bed carbon thermal reduction tower 6, reaction time 4s, instead
850 DEG C of temperature are answered, C/SO2Molar ratio 35,5 meters of gas velocity in tower, carbon dust is lignite coal dust, and coal particle size is 60~150 μm, carbon heat
Also Primordial Qi after reduction enters reduction tower high-temperature separator 7 and carries out gas solid separation, obtains decarburization also Primordial Qi, decarburization also Primordial Qi N2、
CO2, sulphur steam, SO2、CO、H2、CO2And H2The mixture of O etc., carbon dust, which returns to fluidized bed carbon thermal reduction tower 6 by chute, to be continued
Reaction, decarburization also Primordial Qi are cooled to 370 DEG C after the heat exchange of magnesium sulfite warehouse 1, successively enter second level gas-solid separator 9, sulphur
Sulphur condenser 10 is cooled to 140 DEG C of precipitation liquid-state sulfurs in sulfur condenser 10, and the lack of gas after separating sulphur are sent at desulfurizing tower
It is discharged after reason；
3) the high-temperature oxydation magnesium in the combustion air of magnesium sulfite fluidizing calcination and air preheater 5 exchanges heat, and is heated
Enter incinerator 2 to 360 DEG C, the flue gas of generation enters fluidized bed calcination furnace 3 and magnesium sulfite exchanges heat.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. in a kind of magnesium processes desulfurization desulfurizer regeneration simultaneously by-product sulphur device, it is characterised in that: including magnesium sulfite warehouse,
Fluidized bed calcination unit, fluidized bed carbon thermal reduction unit and sulphur recovery unit, the fluidized bed calcination unit includes fluidized bed
Calcining furnace, calcining furnace high-temperature separator and incinerator, magnesium sulfite warehouse are connect with the lower part of fluidized bed calcination furnace, and fluidized bed is forged
The bottom for burning furnace connects incinerator, the top decomposition gas outlet connection calcining furnace high-temperature separator of fluidized bed calcination furnace, the stream
Changing bed carbon thermal reduction unit includes fluidized bed carbon thermal reduction tower and reduction tower high-temperature separator, at the top of calcining furnace high-temperature separator
The bottom of de-magging decomposition gas outlet connection fluidized bed carbon thermal reduction tower, the also Primordial Qi outlet connection of fluidized bed carbon thermal reduction top of tower
Tower high-temperature separator is restored, reduction tower high-temperature separator is connect with magnesium sulfite warehouse, and magnesium sulfite warehouse connects sulphur recovery
Unit.
2. the apparatus according to claim 1, it is characterised in that: calcining furnace high-temperature separator bottom connects air preheat
Device, the air preheater are made of internal cooling space and external heating space, calcining furnace high-temperature separator bottom
It separates gas outlet and enters air preheater cooling space.
3. the apparatus of claim 2, it is characterised in that: air enters the top of air preheater heating space, empty
The lower part of air preheater heating space connects incinerator, the desulphurization system of the bottom connection of air preheater cooling space out-of-bounds.
4. the apparatus according to claim 1, it is characterised in that: the bottom of reduction tower high-temperature separator and fluidized bed carbon heat are also
It is connected between the lower part of former tower by chute.
5. device according to claim 4, it is characterised in that: the intermediate of the chute connects lower hopper, and the chute leans on
Nearly reduction tower high-temperature separator side connection row's carbon pipeline, the carbon dust of row's carbon pipeline are sent to magnesium sulfite warehouse.
6. device according to claim 5, it is characterised in that: pipeline that the chute is connect with lower hopper, row's carbon pipeline,
Lock gas batcher is respectively set close to the pipeline of fluidized bed carbon thermal reduction tower in chute.
7. the apparatus according to claim 1, it is characterised in that: heat exchanger, institute is arranged in the inside of the magnesium sulfite warehouse
The top decarburization also Primordial Qi outlet for stating reduction tower high-temperature separator connects the gas feed of the heat exchanger.
8. device according to claim 7, it is characterised in that: the bottom of the magnesium sulfite warehouse and fluidized bed calcination furnace
Setting lock gas batcher on the pipeline of connection.
9. the apparatus according to claim 1, it is characterised in that: the sulphur recovery unit include second level gas-solid separator,
The bottom of sulfur condenser, the second level gas-solid separator connects sulfur condenser.
10. device according to claim 9, it is characterised in that: sulphur storage tank, sulphur is arranged in the bottom of the sulfur condenser
The side wall lack of gas outlet of sulphur condenser is connect with desulphurization system out-of-bounds.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822059910.3U CN209193567U (en) | 2018-12-07 | 2018-12-07 | The device of desulfurizer regeneration by-product sulphur simultaneously in a kind of magnesium processes desulfurization |
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| CN201822059910.3U CN209193567U (en) | 2018-12-07 | 2018-12-07 | The device of desulfurizer regeneration by-product sulphur simultaneously in a kind of magnesium processes desulfurization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109264752A (en) * | 2018-12-07 | 2019-01-25 | 山东大学 | The method and device of desulfurizer regeneration by-product sulphur simultaneously in a kind of magnesium processes desulfurization |
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2018
- 2018-12-07 CN CN201822059910.3U patent/CN209193567U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109264752A (en) * | 2018-12-07 | 2019-01-25 | 山东大学 | The method and device of desulfurizer regeneration by-product sulphur simultaneously in a kind of magnesium processes desulfurization |
| CN109264752B (en) * | 2018-12-07 | 2023-10-03 | 山东大学 | Method and device for regenerating desulfurizing agent and simultaneously producing byproduct sulfur in magnesium desulfurization |
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