CN100560184C - Recycle magnesia and remove that sulfur dioxide makes it become the method for product in the waste gas - Google Patents
Recycle magnesia and remove that sulfur dioxide makes it become the method for product in the waste gas Download PDFInfo
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- CN100560184C CN100560184C CNB2005100804812A CN200510080481A CN100560184C CN 100560184 C CN100560184 C CN 100560184C CN B2005100804812 A CNB2005100804812 A CN B2005100804812A CN 200510080481 A CN200510080481 A CN 200510080481A CN 100560184 C CN100560184 C CN 100560184C
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- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims abstract description 90
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 239000000395 magnesium oxide Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000002912 waste gas Substances 0.000 title claims abstract description 18
- 239000006227 byproduct Substances 0.000 claims abstract description 39
- 239000002002 slurry Substances 0.000 claims abstract description 36
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 33
- 230000001172 regenerating effect Effects 0.000 claims abstract description 29
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000003546 flue gas Substances 0.000 claims abstract description 21
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 18
- 239000000047 product Substances 0.000 claims abstract description 18
- 230000023556 desulfurization Effects 0.000 claims abstract description 16
- 239000007787 solid Substances 0.000 claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims abstract description 11
- 238000004064 recycling Methods 0.000 claims abstract description 9
- 238000010521 absorption reaction Methods 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 6
- 239000011777 magnesium Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000000654 additive Substances 0.000 claims description 8
- 230000000996 additive effect Effects 0.000 claims description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 229910052749 magnesium Inorganic materials 0.000 claims description 7
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 239000008247 solid mixture Substances 0.000 claims description 4
- 238000000354 decomposition reaction Methods 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- 210000000988 bone and bone Anatomy 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 2
- 229910000040 hydrogen fluoride Inorganic materials 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 230000008929 regeneration Effects 0.000 claims description 2
- 238000011069 regeneration method Methods 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 238000007605 air drying Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- JESHZQPNPCJVNG-UHFFFAOYSA-L magnesium;sulfite Chemical compound [Mg+2].[O-]S([O-])=O JESHZQPNPCJVNG-UHFFFAOYSA-L 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 230000001473 noxious effect Effects 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 229910019440 Mg(OH) Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 244000089742 Citrus aurantifolia Species 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 2
- 239000000347 magnesium hydroxide Substances 0.000 description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- XGZRAKBCYZIBKP-UHFFFAOYSA-L disodium;dihydroxide Chemical compound [OH-].[OH-].[Na+].[Na+] XGZRAKBCYZIBKP-UHFFFAOYSA-L 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009156 water cure Methods 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of magnesia that recycles is that desulfurizing agent is removed the method that sulfur dioxide in the waste gas becomes the sulfur dioxide product, equipment such as desulfuration absorbing tower, slurry preparation jar, pulp-liquor separator, byproduct dewaterer, liquid-return box, regenerating furnace, exhaust seperator is connected with pump with pipeline.The desulfurization nozzle pipe is housed in the absorption tower, hot flue gas from the bottom one side introduce, upwards flow, with desulfurizer slurry reverse mix lower the temperature and desulphurization reaction after discharge from the top, the slurries of bottom stock tank by the pump discharge currents to seperator, magnesium sulfite (MgSO wherein
3) solid grain is separated to send into and is heated to 800-1100 ℃ in the regenerating furnace, make it resolve into magnesia and sulfur dioxide, send the magnesia powder discharge back to magnesia slurry preparation jar as the desulfurizing agent raw material and recycle through solid, gas separation, the rate of recovery reaches more than 90%, and sulfur dioxide becomes useful products by noxious pollutant, pollutes in improvement and realizes resource recycling simultaneously.
Description
One, technical field:
The present invention relates to a kind of wet flue gas desulfurization method, particularly relate to and a kind ofly remove in the waste gas sulfur dioxide and can recycle use, the method for producing the sulfur dioxide byproduct simultaneously with magnesia.
Two, background technology
The sulphur that contains in fossil fuel, particularly coal and the oil produces sulfur dioxide gas after burning, discharge with combustion products of exhaust gas, causes atmosphere pollution.For administering the various flue gas desulfurization techniques that sulfur dioxide is implemented the pollution of atmosphere in the waste gas all is to absorb sulfur dioxide gas in the waste gas with desulfurization absorbent, reaches the purpose of purifying exhaust air.
Wet fuel gas desulfurizing technology has the desulfuration efficiency height, and is good to the adaptability of flue gas and desulfurizing agent, also can be suitable for jumbo gas cleaning etc., so most widely used, (adopt calcium oxide CaO, i.e. lime, or calcium carbonate CaCO as the calcium base
3, i.e. lime stone) and sulfur removal technology etc., but its defective is to be easy to fouling, wearing and tearing even stop up, thus reduced reliability of operation, and the gypsum by-product that produces is of low quality, is difficult to effective utilization.Adopt good sodium base (the NaOH NaOH, or sodium carbonate Na of performance
2CO
3, or sodium acid carbonate NaHCO
3) or magnesium base (magnesia MgO, or magnesium hydroxide Mg (OH)
2) desulfurizing agent has the expensive deficiency of price.
Method of the present invention obviously is better than existing above-mentioned the whole bag of tricks.Formerly technology all is to be purpose with the sulfur dioxide removed in the waste gas, desulfurizing agent also consumes when removing sulfur dioxide, the inventive method is then decomposed the magnesia desulfuration byproduct, regenerating oxidation magnesium recycles, and the sulfur dioxide gas that decomposites higher concentration becomes product, can make sulfuric acid, perhaps produces other sulfur-bearing product, finish resource recycling simultaneously in control atmosphere pollution, realize economic circulation.
Three, summary of the invention:
The purpose of this invention is to provide a kind of like this flue gas desulfurization and reclaim the method that desulfurizing agent is produced sulfur dioxide simultaneously, it adopts the magnesia of function admirable is desulfurizing agent, desulfuration efficiency is up to 99%, reliable, cost is lower than other technology with performance, and the desulfurizing agent recycling utilization, can also produce sulfur dioxide gas.
This invention mainly comprises drum shape desulfuration absorbing tower, slurry preparation jar, byproduct pulp-liquor separator, byproduct dewaterer, byproduct regenerating furnace, regenerating furnace exhaust seperator, equipment such as liquid-return box and relevant water pump, blower fan and connecting line.The desulfurization nozzle pipe is housed in the described absorption tower, and hot flue gas is the introducing of one side from the bottom, flows from the bottom up, lowers the temperature and desulphurization reaction with reverse mixing of desulfurization slurry, discharges at the top through the flue gas of cooling and purification.The sulfurous acid magnesium salts slurries that absorption reaction forms keep pH value at 5.5-6.5, through pumped back desulfurization nozzle pipe, carry out circulated sprinkling, and the slurries of bottom stock tank are discharged by pump, flow to seperator, and its Shen is with magnesium sulfite (MgSO
3) be separated for the solid grain of Main Ingredients and Appearance, be discharged into and be admitted in the regenerating furnace after dewaterer is further dehydrated, regenerating furnace is heated to 800-1100 ℃ by fuel combustion makes magnesium sulfite resolve into magnesia and sulfur dioxide, the regenerating furnace flue gas that contains solid grain of magnesia and sulfur dioxide gas is through solid, gas separates magnesia powder discharged and is used as the desulfurizing agent raw material under collecting and sends magnesia slurry preparation jar back to and recycle, the gas that contains sulfur dioxide then becomes product and can further produce sulfuric acid or other sulfur-bearing product after removing dust, sell to utilize, in seperator, separate contain the solid grain liquid that contains magnesium (Mg) composition seldom and the liquid of being separated by dewaterer mix after be pumped to the desulfuration absorbing tower recycling.
The advantage of the inventive method is:
1. adopting the magnesia (MgO) of function admirable is desulfurizing agent.
2. the magnesia desulfurizing agent recovery of can regenerating from byproduct recycles, and the rate of recovery is greater than 90%.
3. atmosphere pollution oxious component sulfur dioxide is changed into the sulfur dioxide gas of high economic worth in the flue gas after removing from flue gas, and the change noxious pollutant is useful products.
Four, description of drawings
Figure is a kind of structure schematic flow sheet of the present invention's " recycle magnesia remove sulfur dioxide makes it become the method for product in the waste gas ".
Five, implementation method
As shown in the figure, described equipment comprise the preparation of drum shape desulfuration absorbing tower (1), desulfurizer slurry jar (6), a byproduct pulp-liquor separator (15), byproduct dewaterer (17), liquid-return box (20, regenerating furnace (24) and the furnace gas seperator (28) of regenerating, the top of described desulfuration absorbing tower (1) is provided with desulfurization nozzle pipe (3), the bottom is desulfuration absorbing tower stock tank (9), and adopts following method cycling:
Contain sulfur dioxide, hydrogen chloride, the flue gas of sour gas such as hydrogen fluoride enters desulfuration absorbing tower (1) by inlet smoke pipe (2), from following, up pass through, through slurries contact the carrying out absorption reaction of desulfurization nozzle pipe (3) ejection, the washing of sour gas such as sulfur dioxide in flue gas is fallen into the stock tank (9) of bottom, slough the flue gas of sour gas such as sulfur dioxide and discharge from clean smoke discharge pipe (4); Slurries in stock tank (9) pump into circulation pipe (11) through circulating pump (10), enter desulfurization nozzle pipe (3) ejection, repeatedly circulation; Desulfurizing agent magnesia adds pipe (5) through magnesia and adds slurry preparation jars (6) and mixes with the water of water injection pipe (34) and produce slurries and pump into desulfurizing agent through slush pump (7) and starch and manage (8), mixes with recirculation pipe (11), and slurries are sent into desulfurization nozzle pipe (3); The slurries of desulfuration absorbing tower stock tank (9) are discharged through discharge pipe (12), pump into flow inlet (14) through slurry pump (13), enter byproduct pulp-liquor separator (15), add the additive improved separating effect through additive pipe (35), water wherein and solid-state byproduct are separated, water enters liquid-return box (20) through seperator drainpipe (19), solid-state byproduct enters byproduct dewaterer (17) through slurries discharge pipe (16) and is further dehydrated or bone dry, the water of deviating from enters liquid-return box (20) through dehydration discharge pipe (18), pumps into liquid back pipe (22) through time liquid pump (21) and sends desulfuration absorbing tower stock tank (9) back to; Be admitted to regenerating furnace (24) from the dry state byproduct of byproduct dewaterer (17) output through feeder sleeve (23), fuel of sending into through cartridge (25) and the air of sending into through air hose (26) burn in regenerating furnace, to be heated to 800-1100 ℃ through the byproduct that feeder sleeve (23) are sent into, mainly carry out following decomposition reaction:
MgSO
3→MgO+SO
2
The magnesia that produces is discharged through slag discharge pipe (31), the sulfur dioxide gas that contains that produces carries magnesia powder and drains into regenerating furnace exhaust seperator (28) by regenerating furnace blast pipe (27) magnesia powder is separated, discharge through magnesia solid grain discharge pipe (30), mixes after regenerating oxidation magnesium conveyer (32) enters regenerating oxidation magnesium carrier pipe (33) with the magnesia of discharging and to send slurry preparation jar (6) back to, the magnesian regeneration cycle of realization desulfurizing agent through slag discharge pipe (31); Send and be cleaned sulfur dioxide gas discharge pipe (29), become the byproduct of flue gas desulfur device for this reason through the sulfur dioxide gas that regenerating furnace exhaust seperator (28) is discharged.
Byproduct pulp-liquor separator (15) can be a centrifugal separator, or vacuum type seperator, or the gravity type sedimentation basin, the solid composition is 40-70% in the slurries that slurries discharge pipe (16) is discharged, the solid composition in seperator drainpipe (19) draining is 0.5-3%; When adopting gravity type sedimentation basin (15), add the separating rate that additive is accelerated pulp-liquor separator (15) solid through additive pipe (35).
Byproduct dewaterer (17) can be the vacuum type dewaterer, or fire kiln; The moisture content of the solid by-product that is produced by vacuum type byproduct dewaterer (17) is below 20%, and the moisture content of the solid by-product that is produced by fire kiln is less than 1%, and the waste gas of heating furnace is discharged into inlet smoke pipe (2) through flue gas leading (36); Fire kiln can also be the drying oven of combustion fuel, or with the drying oven of other thermal medium (steam, air etc.).
The main program of desulphurization reaction is as follows.
The magnesia slaking reaction that in the slurry preparation jar, carries out
MgO+H
2O→Mg(OH)
2
The reaction of carrying out in desulfuration absorbing tower mainly comprises:
Sulfur dioxide is by the water absorption reaction
SO
2+H
2O→H
2SO
3
Magnesia (MgO) desulfurizing agent generates magnesium hydroxide (Mg (OH) through adding water cure
2) slurries carry out following desulfurization absorption reaction:
Mg(OH)
2+H
2SO
3→MgSO
3+2H
2O
H
2SO
3+2MgSO
3→2Mg(HSO
3)
2
Mg(HSO
3)
2+Mg(OH)
2→2MgSO
3+2H
2O
Carry out oxidation reaction when in flue gas, having oxygen:
Mg(HSO
3)
2+1/2O
2→MgSO
4+H
2SO
3
MgSO
3+1/2O
2→MgSO
4
Under common reaction condition, main desulfurizing byproduct is solid-state MgSO
3And the MgSO of a spot of solution shape
4Solid-state sulfurous acid magnesium salts is separated from slurries, and further is sent to regenerating furnace after the dehydration, and the main decomposition reaction in regenerating furnace is:
MgSO
3→MgO+SO
2↑
Claims (8)
1. one kind recycles magnesia and removes that sulfur dioxide makes it become the method for product in the waste gas, its structural system comprises desulfuration absorbing tower (1), slurry preparation jar (6), oar liquid separator (15), dewaterer (17), liquid-return box (20), regenerating furnace (24) is connected with pump with pipeline with regenerating furnace exhaust seperator (28), it is characterized in that: contain sulfur dioxide, hydrogen chloride, the flue gas of sour gas such as hydrogen fluoride enters desulfuration absorbing tower (1) by inlet smoke pipe (2), from following, up pass through, slurries contact carrying out absorption reaction through desulfurization nozzle pipe (3) ejection, sour gas such as sulfur dioxide in flue gas washings is fallen into the stock tank (9) of bottom, slough the flue gas of sour gas such as sulfur dioxide and discharge from clean smoke discharge pipe (4); Slurries in stock tank (9) pump into circulation pipe (11) through circulating pump (10), enter desulfurization nozzle pipe (3) ejection, repeatedly circulation; Desulfurizing agent magnesia adds pipe (5) through magnesia and adds slurry preparation jars (6) and mixes with the water of water injection pipe (34) and produce slurries and pump into desulfurizing agent through slush pump (7) and starch and manage (8), mixes with recirculation pipe (11), and slurries are sent into desulfurization nozzle pipe (3); The slurries of desulfuration absorbing tower stock tank (9) are discharged through discharge pipe (12), pump into flow inlet (14) through slurry pump (13), enter byproduct pulp-liquor separator (15), add the additive improved separating effect through additive pipe (35), water wherein and solid-state byproduct are separated, water enters liquid-return box (20) through seperator drainpipe (19), solid-state byproduct enters byproduct dewaterer (17) through slurries discharge pipe (16) and is further dehydrated or bone dry, the water of deviating from enters liquid-return box (20) through dehydration discharge pipe (18), pumps into liquid back pipe (22) through time liquid pump (21) and sends desulfuration absorbing tower stock tank (9) back to; Be admitted to regenerating furnace (24) from the dry state byproduct of byproduct dewaterer (17) output through feeder sleeve (23), fuel of sending into through cartridge (25) and the air of sending into through air hose (26) burn in regenerating furnace, to be heated to 800-1100 ℃ through the byproduct that feeder sleeve (23) are sent into, mainly carry out following decomposition reaction:
MgSO
3→MgO+SO
2
The magnesia that produces is discharged through slag discharge pipe (31), the sulfur dioxide gas that contains that produces carries magnesia powder and drains into regenerating furnace exhaust seperator (28) by regenerating furnace blast pipe (27) magnesia powder is separated, discharge through magnesia solid grain discharge pipe (30), mixes after regenerating oxidation magnesium conveyer (32) enters regenerating oxidation magnesium carrier pipe (33) with the magnesia of discharging and to send slurry preparation jar (6) back to, the magnesian regeneration cycle of realization desulfurizing agent through slag discharge pipe (31); Send and be cleaned sulfur dioxide gas discharge pipe (29), become the byproduct of flue gas desulfur device for this reason through the sulfur dioxide gas that regenerating furnace exhaust seperator (28) is discharged.
2. recycle magnesia according to claim 1 and remove that sulfur dioxide makes it become the method for product in the waste gas, it is characterized in that: byproduct pulp-liquor separator (15) can be a centrifugal separator, or vacuum type seperator, or gravity type sedimentation basin, the solid composition is 40-70% in the slurries that slurries discharge pipe (16) is discharged, and the solid composition in seperator drainpipe (19) draining is 0.5-3%.
3. remove as recycling magnesia as described in the claim 2 that sulfur dioxide makes it become the method for product in the waste gas, it is characterized in that: when byproduct pulp-liquor separator (15) adopts the gravity type sedimentation basin, add the separating rate that additive is accelerated byproduct pulp-liquor separator (15) solid through additive pipe (35).
4. recycle magnesia according to claim 1 and remove that sulfur dioxide makes its method that becomes product in the waste gas, method is characterized in that: byproduct dewaterer (17) can be the vacuum type dewaterer, or fire kiln.
5, remove as recycling magnesia as described in the claim 4 that sulfur dioxide makes it become the method for product in the waste gas, it is characterized in that: the moisture content of the solid by-product that is produced by vacuum type byproduct dewaterer (17) is below 20%.
6, remove as recycling magnesia as described in the claim 4 that sulfur dioxide makes it become the method for product in the waste gas, it is characterized in that: the moisture content of the solid by-product that is produced by fire kiln is less than 1%, and the waste gas of fire kiln is discharged into inlet smoke pipe (2) through flue gas leading (36).
7, remove as recycling magnesia as described in the claim 4 that sulfur dioxide makes it become the method for product in the waste gas, it is characterized in that: fire kiln can be the drying oven of combustion fuel.
8, remove as recycling magnesia as described in the claim 4 that sulfur dioxide makes it become the method for product in the waste gas, it is characterized in that: described drying oven is with steam or the air drying oven as thermal medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100804812A CN100560184C (en) | 2005-07-05 | 2005-07-05 | Recycle magnesia and remove that sulfur dioxide makes it become the method for product in the waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100804812A CN100560184C (en) | 2005-07-05 | 2005-07-05 | Recycle magnesia and remove that sulfur dioxide makes it become the method for product in the waste gas |
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| Publication Number | Publication Date |
|---|---|
| CN1891330A CN1891330A (en) | 2007-01-10 |
| CN100560184C true CN100560184C (en) | 2009-11-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580486A (en) * | 2012-02-28 | 2012-07-18 | 浙江南化防腐设备有限公司 | Novel zinc oxide desulfurization method and device |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947406A (en) * | 2010-07-22 | 2011-01-19 | 山西晋丰环保工程设计有限公司 | Energy-saving and consumption-reducing magnesium oxide flue gas desulfurization process and device |
| CN102101004A (en) * | 2011-01-26 | 2011-06-22 | 中节能六合天融环保科技有限公司 | Method for recovering magnesium oxide and byproduct sulfur dioxide by using indirect heating rotary roasting furnace |
| CN103111187B (en) * | 2013-02-06 | 2015-02-04 | 盛尼克能源环保技术(重庆)有限公司 | System and method for regenerating magnesium oxides and sulfur dioxides through decomposition of magnesium oxide desulphurization by-products |
| CN103480265B (en) * | 2013-09-16 | 2016-04-06 | 青岛和合汇途工程技术有限公司 | One utilizes magnesia to administer SO 2waste gas reclaims the method for byproduct simultaneously |
| CN106310942A (en) * | 2016-10-31 | 2017-01-11 | 许仁忠 | Treating device for engine exhaust emission of vehicle or mechanical engineering |
| CN110090550A (en) * | 2019-04-17 | 2019-08-06 | 昆明理工大学 | A kind of coke oven flue gas sulfur method thermally decomposed in advance based on magnesium salts |
| CN110980779A (en) * | 2019-12-17 | 2020-04-10 | 江苏联慧资源环境科技有限公司 | Recovery method of magnesium oxide desulfurizer |
| CN113440993B (en) * | 2020-03-24 | 2022-10-28 | 中国科学院过程工程研究所 | Purification system and purification method for organic silicon acid-containing waste gas |
| CN111729474B (en) * | 2020-06-10 | 2021-08-31 | 上海交通大学 | Method for circulating flue gas desulfurization and sulfur dioxide recovery by using organic acid magnesium solution |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1491738A (en) * | 2002-10-22 | 2004-04-28 | 熊天渝 | Washing system for adding magnesia lime/lime rock for removing SO2 and producing gypsum simultaneously |
-
2005
- 2005-07-05 CN CNB2005100804812A patent/CN100560184C/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1491738A (en) * | 2002-10-22 | 2004-04-28 | 熊天渝 | Washing system for adding magnesia lime/lime rock for removing SO2 and producing gypsum simultaneously |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580486A (en) * | 2012-02-28 | 2012-07-18 | 浙江南化防腐设备有限公司 | Novel zinc oxide desulfurization method and device |
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