CN102019139A - Magnesium desulfurization system - Google Patents
Magnesium desulfurization system Download PDFInfo
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- CN102019139A CN102019139A CN 201010618144 CN201010618144A CN102019139A CN 102019139 A CN102019139 A CN 102019139A CN 201010618144 CN201010618144 CN 201010618144 CN 201010618144 A CN201010618144 A CN 201010618144A CN 102019139 A CN102019139 A CN 102019139A
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- slurries
- absorption tower
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- desulfurization
- magnesium
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Abstract
The invention provides a magnesium desulfurization system having higher desulfurization efficiency and low construction and operation cost. The desulfurization system comprises an absorption tower, wherein the upper part in the absorption tower is provided with a spraying system, and the lower part in the absorption tower is provided with a slurry pool; a water inlet pipeline of the spraying system is communicated with the slurry pool through a circulating pump; the gas outlet of the absorption tower is communicated with a chimney; desulfurization slurry containing magnesium oxide and/or magnesium hydroxide is contained in the slurry pool; and the desulfurization slurry is pressurized through the circulating pump and then is sprayed to smoke in the absorption tower by the spraying system. The desulfurization efficiency of the desulfurization system provided by the invention is higher than that of the existing limestone-gypsum wet desulfurization system; the investment cost of the whole desulfurization system can be reduced by over 20% because of the improvement of the desulfurization efficiency of the whole desulfurization system; equipment can be scaled and blocked by magnesium desulfurization, thereby eliminating the corrosion problem of partial equipment; and the product generated by desulfurization can be recycled or reused, thereby further saving the cost.
Description
Technical field
The present invention relates to the environment-friendly engineering technical field, be specifically related to a kind of magnesium method desulphurization system.
Background technology
Flue gas desulfurization is the effective means of control China sulfur dioxide pollution, and process is simple, raw material sources abundant, with low cost, stable and desulfuration efficiency advantages of higher and the limestone-gypsum wet desulphurization has, and has obtained extensive use.But the accessory substance that capital expenditure is big, operating cost is high because this technology exists, generate easily causes shortcomings such as secondary pollution.
Summary of the invention
In view of this, the invention provides a kind of magnesium method desulphurization system, have higher desulfuration efficiency, construction and operating cost are low.
The object of the present invention is achieved like this: magnesium method desulphurization system, comprise the absorption tower, top in the described absorption tower is provided with spray system, the bottom is provided with the slurries pond, the water inlet pipe of described spray system is communicated with the slurries pond by circulating pump, the gas outlet on absorption tower is communicated with chimney, and splendid attire contains the desulfurization slurry of magnesia and/or magnesium hydroxide in the described slurries pond, and desulfurization slurry sprays the flue gas that enters the absorption tower through spray system after pressurizeing by circulating pump.
Further, described desulfurization slurry is the slurries of magnesite, shepardite and/or dolomite.
Further, described desulfurization slurry solid content is 15 ~ 30%.
Further, described desulfurization slurry pH value is 5.5 ~ 6.5.
Further, also comprise slurries production subsystem, described slurries are produced subsystem and are comprised flour mill, water supply installation, slurries storage tank, the breeze outlet of flour mill is communicated with the breeze inlet of slurries storage tank, the feed water inlet of water supply installation is communicated with the water inlet of slurries storage tank, and the slurries storage tank is communicated with the slurries pond on absorption tower by the slurries conveyance conduit.
Further, comprise that also slurries reclaim subsystem, described slurries reclaim subsystem and comprise waste-water vortex device, drier and the calcining furnace that is communicated with successively, and the inlet of described waste-water vortex device is communicated with the bottom in slurries pond, absorption tower, and the outlet of calcining furnace is communicated with the breeze inlet of slurries storage tank.
Magnesium method desulphurization system is with respect to existing limestone-gypsum wet desulfurization system, and the desulfurizing agent sufficient raw is with low cost; Because the molecular weight of magnesia and magnesium hydroxide is all smaller than calcium carbonate and calcium oxide, therefore desulfuration efficiency will be higher than existing limestone-gypsum wet desulfurization system, and because the raising of desulfuration efficiency, structural design on the absorption tower, the size of recycle slurry liquid measure, the overall size of system, the power of equipment can be corresponding less, so, the investment cost of whole desulphurization system can reduce more than 20%, and, the equipment scaling blockage problem can not take place in the desulfurization of magnesium method, the pH value of also being convenient to control desulfurization slurry is 5.5 ~ 6.5, eliminates the equipment component etching problem, and the product that desulfurization generates can be recycled, or utilize again, further save cost.
Description of drawings
For the purpose, technical scheme and the advantage that make invention is clearer, the present invention is described in further detail below in conjunction with accompanying drawing:
Fig. 1 shows magnesium method desulphurization system structural representation.
The specific embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.
Referring to Fig. 1, the magnesium method desulphurization system of present embodiment, comprise absorption tower 1, top in the described absorption tower 1 is provided with spray system 9, the bottom is provided with slurries pond 10, the water inlet pipe of described spray system 9 is communicated with slurries pond 10 by circulating pump 3, the gas outlet on absorption tower 1 is communicated with chimney 2, the oxidation fan 12 that is communicated with slurries pond 10 also can be set, splendid attire contains the desulfurization slurry of magnesia and/or magnesium hydroxide in the described slurries pond 10, and desulfurization slurry sprays through 9 pairs of flue gases that enter the absorption tower of spray system after pressurizeing by circulating pump 3, and the flue gas that contains sulfur dioxide enters absorption tower 1, contact with desulfuration solution is reverse, remove clean flue gas behind the sulfur dioxide through the top, absorption tower, enter chimney 2 and enter atmosphere, desulfurization slurry is after circulating pump 3 pressurizations, spray through spray system 9 again, recycle.Described desulfurization slurry is the slurries that magnesite, shepardite and/or dolomite contain magnesium matchmaker ore, and its solid content is 15 ~ 30%, and pH value is 5.5 ~ 6.5.Best, it is 2:1 that desulfurization slurry is selected shepardite and dolomite mass ratio for use, and when solid content was 24% shepardite slurries, desulfuration efficiency can reach more than 99%.
Also comprise slurries production subsystem, described slurries are produced subsystem and are comprised flour mill 4, water supply installation 11, slurries storage tank 5, the breeze outlet of flour mill 4 is communicated with the breeze inlet of slurries storage tank 5, the feed water inlet of water supply installation 11 is communicated with the water inlet of slurries storage tank 5, and slurries storage tank 5 is communicated with the slurries pond 10 on absorption tower 1 by the slurries conveyance conduit.Magnesium-containing ore through flour mill grind 4 broken after, enter serum pot 5, in serum pot 5 with water be mixed into desulfurization slurry, be transported to slurries pond 10 by the slurries conveyance conduit then.
Comprise that also slurries reclaim subsystem, described slurries reclaim subsystem and comprise waste-water vortex device 6, drier 7 and the calcining furnace 8 that is communicated with successively, the inlet of described waste-water vortex device 6 is communicated with by the bottom of discharge pipe with slurries pond, absorption tower 10, and the outlet of calcining furnace 8 is communicated with the breeze inlet of slurries storage tank 5.Slurries behind the absorption sulfur dioxide, it is the mixed solution of magnesium sulfite and magnesium sulfate, mixed solution enters waste-water vortex device 6 through discharge pipe, remove most of moisture, enter the drier 7 of magnesium sulfite and magnesium sulfate then, enter calcining furnace 8 then, magnesium sulfite and magnesium sulfate resolve into magnesia and sulfur dioxide.Sulfur dioxide is recovered utilization, and it is recycling that magnesia enters serum pot 5.Slurries reclaim subsystem also can be by emitting slurries, liquid level and concentration of slurry in the control absorption tower from slurries pond 10.
Magnesium-containing ore through flour mill grind 4 broken after, enter serum pot 5, in serum pot 5 with water be mixed into desulfurization slurry, its solid content is 15 ~ 30%.By the amount that slurries in the control serum pot 5 enter absorption tower 1, the pH value of slurries in the control absorption tower 1, pH value is controlled at 5.5 ~ 6.5, to guarantee desulfuration efficiency and absorbent utilization rate.
Claims (6)
1. magnesium method desulphurization system, it is characterized in that: comprise the absorption tower, top in the described absorption tower is provided with spray system, the bottom is provided with the slurries pond, the water inlet pipe of described spray system is communicated with the slurries pond by circulating pump, the gas outlet on absorption tower is communicated with chimney, and splendid attire contains the desulfurization slurry of magnesia and/or magnesium hydroxide in the described slurries pond, and desulfurization slurry sprays the flue gas that enters the absorption tower through spray system after pressurizeing by circulating pump.
2. magnesium method desulphurization system as claimed in claim 1 is characterized in that: described desulfurization slurry is the slurries of magnesite, shepardite and/or dolomite.
3. magnesium method desulphurization system as claimed in claim 2 is characterized in that: described desulfurization slurry solid content is 15 ~ 30%.
4. magnesium method desulphurization system as claimed in claim 3 is characterized in that: described desulfurization slurry pH value is 5.5 ~ 6.5.
5. as each described magnesium method desulphurization system in the claim 1 to 4, it is characterized in that: also comprise slurries production subsystem, described slurries are produced subsystem and are comprised flour mill, water supply installation, slurries storage tank, the breeze outlet of flour mill is communicated with the breeze inlet of slurries storage tank, the feed water inlet of water supply installation is communicated with the water inlet of slurries storage tank, and the slurries storage tank is communicated with the slurries pond on absorption tower by the slurries conveyance conduit.
6. magnesium method desulphurization system as claimed in claim 5, it is characterized in that: comprise that also slurries reclaim subsystem, described slurries reclaim subsystem and comprise waste-water vortex device, drier and the calcining furnace that is communicated with successively, the inlet of described waste-water vortex device is communicated with the bottom in slurries pond, absorption tower, and the outlet of calcining furnace is communicated with the breeze inlet of slurries storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010618144 CN102019139A (en) | 2010-12-31 | 2010-12-31 | Magnesium desulfurization system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010618144 CN102019139A (en) | 2010-12-31 | 2010-12-31 | Magnesium desulfurization system |
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| CN102019139A true CN102019139A (en) | 2011-04-20 |
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| CN 201010618144 Pending CN102019139A (en) | 2010-12-31 | 2010-12-31 | Magnesium desulfurization system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114768498A (en) * | 2022-05-05 | 2022-07-22 | 重庆远达烟气治理特许经营有限公司科技分公司 | Magnesium desulfurization system and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201930710U (en) * | 2010-12-30 | 2011-08-17 | 中电投远达环保工程有限公司 | Magnesium desulfurization system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201930710U (en) * | 2010-12-30 | 2011-08-17 | 中电投远达环保工程有限公司 | Magnesium desulfurization system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114768498A (en) * | 2022-05-05 | 2022-07-22 | 重庆远达烟气治理特许经营有限公司科技分公司 | Magnesium desulfurization system and method |
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Application publication date: 20110420 |