CN105749736A - Special calcium carbonate for desulfurization and denitrification in thermal power plant - Google Patents
Special calcium carbonate for desulfurization and denitrification in thermal power plant Download PDFInfo
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- CN105749736A CN105749736A CN201610303069.0A CN201610303069A CN105749736A CN 105749736 A CN105749736 A CN 105749736A CN 201610303069 A CN201610303069 A CN 201610303069A CN 105749736 A CN105749736 A CN 105749736A
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 110
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 55
- 238000006477 desulfuration reaction Methods 0.000 title abstract description 10
- 230000023556 desulfurization Effects 0.000 title abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 56
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 34
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims abstract description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 34
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 34
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 claims abstract description 34
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000002994 raw material Substances 0.000 claims abstract description 29
- 235000019738 Limestone Nutrition 0.000 claims abstract description 22
- 239000006028 limestone Substances 0.000 claims abstract description 22
- 229920001661 Chitosan Polymers 0.000 claims abstract description 17
- 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 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 17
- 239000004113 Sepiolite Substances 0.000 claims abstract description 17
- WHMDKBIGKVEYHS-IYEMJOQQSA-L Zinc gluconate Chemical compound [Zn+2].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O WHMDKBIGKVEYHS-IYEMJOQQSA-L 0.000 claims abstract description 17
- 239000004927 clay Substances 0.000 claims abstract description 17
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 17
- 235000013312 flour Nutrition 0.000 claims abstract description 17
- 239000010903 husk Substances 0.000 claims abstract description 17
- 239000010977 jade Substances 0.000 claims abstract description 17
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract description 17
- 239000001095 magnesium carbonate Substances 0.000 claims abstract description 17
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract description 17
- 229910001629 magnesium chloride Inorganic materials 0.000 claims abstract description 17
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 17
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 17
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 17
- 239000003208 petroleum Substances 0.000 claims abstract description 17
- 235000009566 rice Nutrition 0.000 claims abstract description 17
- 229910052624 sepiolite Inorganic materials 0.000 claims abstract description 17
- 235000019355 sepiolite Nutrition 0.000 claims abstract description 17
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 17
- 239000011734 sodium Substances 0.000 claims abstract description 17
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 17
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims abstract description 17
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 17
- 239000011670 zinc gluconate Substances 0.000 claims abstract description 17
- 229960000306 zinc gluconate Drugs 0.000 claims abstract description 17
- 235000011478 zinc gluconate Nutrition 0.000 claims abstract description 17
- 239000007800 oxidant agent Substances 0.000 claims abstract description 12
- 239000012752 auxiliary agent Substances 0.000 claims description 32
- 239000002131 composite material Substances 0.000 claims description 25
- 239000002002 slurry Substances 0.000 claims description 25
- 230000003009 desulfurizing effect Effects 0.000 claims description 24
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 16
- 241000209094 Oryza Species 0.000 claims description 16
- 229940056319 ferrosoferric oxide Drugs 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000011259 mixed solution Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 12
- RFVNOJDQRGSOEL-UHFFFAOYSA-N 2-hydroxyethyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCO RFVNOJDQRGSOEL-UHFFFAOYSA-N 0.000 claims description 11
- 229950007687 macrogol ester Drugs 0.000 claims description 11
- 230000001590 oxidative effect Effects 0.000 claims description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 10
- 238000001354 calcination Methods 0.000 claims description 10
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 10
- 239000000920 calcium hydroxide Substances 0.000 claims description 10
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 10
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000292 calcium oxide Substances 0.000 claims description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 10
- 238000003763 carbonization Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 239000008187 granular material Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 10
- 238000010792 warming Methods 0.000 claims description 10
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- 230000032683 aging Effects 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 5
- 230000018044 dehydration Effects 0.000 claims description 5
- 238000006297 dehydration reaction Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000005304 joining Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims description 5
- 235000011837 pasties Nutrition 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 5
- 238000004381 surface treatment Methods 0.000 claims description 5
- 239000000052 vinegar Substances 0.000 claims description 5
- 235000021419 vinegar Nutrition 0.000 claims description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 32
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 18
- 239000003546 flue gas Substances 0.000 abstract description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 7
- 239000007791 liquid phase Substances 0.000 abstract description 5
- 239000002250 absorbent Substances 0.000 abstract description 4
- 230000002745 absorbent Effects 0.000 abstract description 4
- 239000000654 additive Substances 0.000 abstract 2
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 229910052570 clay Inorganic materials 0.000 abstract 1
- 235000012245 magnesium oxide Nutrition 0.000 abstract 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 1
- 229920001522 polyglycol ester Polymers 0.000 abstract 1
- 239000000779 smoke Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cosmetics (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a special calcium carbonate for desulfurization and denitrification in a thermal power plant. The calcium carbonate comprises the following raw materials in parts by weight: limestone, activated carbon, sepiolite powder, titanium dioxide, iron powder, polyglycol ester, oxidants, magnesium carbonate, aluminum oxide, ferroferric oxide, chitosan, magnesium chloride, magnesium nitrate, clay, rice husk, petroleum sodium sulfonate and additives. The additives comprise the following raw materials in parts by weight: montmorillonite powder, silica, jade powder, zinc gluconate, magnesium oxide and flour. With the adoption of the special calcium carbonate for desulfurization and denitrification in the thermal power plant, sulfur dioxide and nitrogen oxides in industrial flue gases of the thermal power plant can be removed simultaneously to treat the sulfur dioxide and nitrogen oxides in the industrial flue gases simultaneously in a liquid phase, so that the desulfurization efficiency of more than 95% and the denitrification efficiency of more than 80% can be realized. Flue gas desulfurization and denitrification equipment using the absorbent disclosed by the invention has the characteristics of simple structure, low investment and operation cost, small occupation area, stable operation, easy processing of products, convenient popularization and application and the like.
Description
Technical field
The present invention relates to catalyst technical field, specifically the calcium carbonate of a kind of steam power plant Special desulfurizing denitration.
Background technology
In current industrial smoke, sulfur dioxide and nitrogen oxides are typically employed in boiler tail and install desulphurization plant additional and denitration device is administered respectively, and this administration way respectively exists that system complex, investment be high with operating cost, floor space greatly and exists the defect of secondary pollution.Existing flue gas and desulfurizing and denitrifying technology, also ubiquity Financial cost height and secondary pollution problem, remain in the laboratory research stage mostly, and application prospect is poor.For liquid phase flue gas and desulfurizing and denitrifying technology, technological difficulties be in that in flue gas more than 90% nitrogen oxides be insoluble in water nitric oxide production form exist, the Physical Absorption speed of existing gas-liquid mass transfer (contact) equipment be difficult to meet absorb requirement.Therefore, develop the absorbent of the liquid phase flue gas and desulfurizing and denitrifying of a kind of low cost, environment-friendly type, there is important application prospect.
Summary of the invention
It is an object of the invention to provide the calcium carbonate of a kind of steam power plant's Special desulfurizing denitration that can effectively prevent operational outfit structure, desulfuration efficiency high, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the present invention provides following technical scheme:
The calcium carbonate of a kind of steam power plant Special desulfurizing denitration, includes according to the raw material of weight portion: limestone 80-120 part, activated carbon 80-120 part, sepiolite powder 80-120 part, titanium dioxide 5-15 part, iron powder 2-4 part, macrogol ester 3-5 part, oxidant 4-6 part, magnesium carbonate 15-25 part, aluminium sesquioxide 40-60 part, ferroso-ferric oxide 10-14 part, chitosan 30-50 part, magnesium chloride 10-15 part, magnesium nitrate 8-12 part, clay 5-15 part, rice husk 10-14 part, petroleum sodium sulfonate 1-2 part, auxiliary agent 18-32 part；Described auxiliary agent includes according to the raw material of weight portion: montmorillonite powder 5-10 part, silica 1-2 parts, jade powder 5-10 part, zinc gluconate 1-2 part, magnesium oxide 3-4 part, flour 3-4 part.
As the further scheme of the present invention: the calcium carbonate of described steam power plant Special desulfurizing denitration, include according to the raw material of weight portion: limestone 90-110 part, activated carbon 90-110 part, sepiolite powder 90-110 part, titanium dioxide 8-12 part, iron powder 2.5-3.5 part, macrogol ester 3.5-4.5 part, oxidant 4.5-5.5 part, magnesium carbonate 18-22 part, aluminium sesquioxide 45-55 part, ferroso-ferric oxide 11-13 part, chitosan 35-45 part, magnesium chloride 11-14 part, magnesium nitrate 9-11 part, clay 8-12 part, rice husk 11-13 part, petroleum sodium sulfonate 1.2-1.8 part, auxiliary agent 20.8-29.2 part；Described auxiliary agent includes according to the raw material of weight portion: montmorillonite powder 6-9 part, silica 1 .2-1.8 part, jade powder 6-9 part, zinc gluconate 1.2-1.8 part, magnesium oxide 3.2-3.8 part, flour 3.2-3.8 part.
As the present invention further scheme: the calcium carbonate of described steam power plant Special desulfurizing denitration, include according to the raw material of weight portion: limestone 100 parts, activated carbon 100 parts, sepiolite powder 100 parts, titanium dioxide 10 parts, iron powder 3 parts, macrogol ester 4 parts, oxidant 5 parts, magnesium carbonate 20 parts, aluminium sesquioxide 50 parts, ferroso-ferric oxide 12 parts, chitosan 40 parts, 12 parts of magnesium chloride, magnesium nitrate 10 parts, clay 10 parts, 12 parts of rice husk, petroleum sodium sulfonate 1.5 parts, auxiliary agent 26 parts；Described auxiliary agent includes according to the raw material of weight portion: montmorillonite powder 8 parts, silica 1 .5 part, jade powder 8 parts, zinc gluconate 1.5 parts, magnesium oxide 3.5 parts, 3.5 parts of flour.
The preparation method of the calcium carbonate of described steam power plant Special desulfurizing denitration, specifically comprises the following steps that
(1) each raw material is weighed according to weight portion；
(2) flour is added in the water of 10-20 part, pasty state is stirred in heating, add montmorillonite powder, silicon dioxide, jade powder, zinc gluconate and magnesium oxide, make pureed, it is re-fed in calcining furnace at 400-500 DEG C and calcines 4-6h, after cooling, it is ground into the powder of 100-200 order, obtains auxiliary agent standby；
(3) rice husk is sent in retort together with clay, at 600-700 DEG C, carbonization processes 1.5-2.5h, take out, furnishing pureed in the water of 300-500 part is added together with activated carbon, sepiolite powder, iron powder, magnesium carbonate, aluminium sesquioxide, ferroso-ferric oxide, chitosan, magnesium chloride, magnesium nitrate and petroleum sodium sulfonate, heating is to 80-100 DEG C, grinding to form 200-300 order slurry, it is neutral for regulating pH value, dry for standby；
(4) limestone is placed in exsiccator, then heat to 80-120 DEG C of dry 2-4h, again dried limestone is put in rotary kiln, it is warming up to 1000-1200 DEG C after the preheating of preheated device to be calcined, calcining is lowered the temperature then through cooler after terminating, and is drawn off by the calcium oxide of generation when temperature is down to 95-105 DEG C；
(5) joining in reactor by the calcium oxide of preparation, be subsequently adding the water of 3-7 times of weight, be warming up to 70-90 DEG C under stirring, react 20-40min at this temperature, reaction terminates rear cooling down, obtains calcium hydroxide suspension；
(6) 30-50 DEG C, mixing speed 800-1000r/min when, in above-mentioned prepared calcium hydroxide suspension add Polyethylene Glycol vinegar, titanium dioxide, stirring 30-50min obtain mixed solution；
(7) in mixed solution, carbon dioxide compression gas is passed into, the pH value making mixed solution progressively decreases to 7.0, and carbonization reaches terminal, prepares composite calcium carbonate slurry, composite calcium carbonate slurry is put in holding vessel and carry out ageing, make the pH value of composite calcium carbonate slurry be stablized；
(8) in described composite calcium carbonate slurry, add the product of auxiliary agent and step (3), be injected in the centrifuge of operation after continuous stirring 3-5h and carry out dehydration, to not having serosity only to throw away, then dry；
(9) drip inorganic dehydroamino acid continuously with dosing pump and composite calcium carbonate granule is carried out surface treatment, finally calcium carbonate is separated with hot blast, sieving screens out coarse granule, obtains finished product after being crushed to 400-500 order.
Compared with prior art, the invention has the beneficial effects as follows:
Sulfur dioxide in the industrial smoke of steam power plant and nitrogen oxides can be removed by the present invention simultaneously, desulphurization plant is installed additional and denitration device administers that existing investment is high with operating cost, floor space is big and the problem of system complex respectively for overcoming sulfur dioxide and nitrogen oxides in current industrial smoke to be typically employed in boiler tail, the liquid phase realizing the sulfur dioxide in industrial smoke and nitrogen oxides is administered simultaneously, it is possible to achieve the desulfuration efficiency of more than 95% and the denitration efficiency of more than 80%.The flue gas desulfurization and denitrification equipment using present absorbent has simple in construction, investment and operating cost is low, floor space is little, and stable, product is disposable, it is simple to the features such as popularization and application.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the technical scheme of this patent is described in more detail.
Embodiment 1
The calcium carbonate of a kind of steam power plant Special desulfurizing denitration, includes according to the raw material of weight portion: limestone 80 parts, activated carbon 80 parts, sepiolite powder 80 parts, titanium dioxide 5 parts, iron powder 2 parts, macrogol ester 3 parts, oxidant 4 parts, magnesium carbonate 15 parts, aluminium sesquioxide 40 parts, ferroso-ferric oxide 10 parts, chitosan 30 parts, 10 parts of magnesium chloride, magnesium nitrate 8 parts, clay 5 parts, 10 parts of rice husk, petroleum sodium sulfonate 1 part, auxiliary agent 18 parts；Described auxiliary agent includes according to the raw material of weight portion: montmorillonite powder 5 parts, silica 1 part, jade powder 5 parts, zinc gluconate 1 part, magnesium oxide 3 parts, 3 parts of flour.
The preparation method of the calcium carbonate of described steam power plant Special desulfurizing denitration, specifically comprises the following steps that
(1) each raw material is weighed according to weight portion；
(2) being added by flour in the water of 10 parts, pasty state is stirred in heating, adds montmorillonite powder, silicon dioxide, jade powder, zinc gluconate and magnesium oxide, make pureed, be re-fed in calcining furnace at 400 DEG C and calcine 4h, after cooling, it is ground into the powder of 100 orders, obtains auxiliary agent standby；
(3) rice husk is sent in retort together with clay, at 600 DEG C, carbonization processes 1.5h, take out, furnishing pureed in the water of 300 parts is added together with activated carbon, sepiolite powder, iron powder, magnesium carbonate, aluminium sesquioxide, ferroso-ferric oxide, chitosan, magnesium chloride, magnesium nitrate and petroleum sodium sulfonate, heating is to 80 DEG C, grinding to form 200 order slurries, it is neutral for regulating pH value, dry for standby；
(4) limestone is placed in exsiccator, then heat to 80 DEG C of dry 2h, more dried limestone is put in rotary kiln, be warming up to 1000 DEG C after the preheating of preheated device and be calcined, calcining is lowered the temperature then through cooler after terminating, and is drawn off by the calcium oxide of generation when temperature is down to 95 DEG C；
(5) joining in reactor by the calcium oxide of preparation, be subsequently adding the water of 3 times of weight, be warming up to 70 DEG C under stirring, react 20min at this temperature, reaction terminates rear cooling down, obtains calcium hydroxide suspension；
(6) 30 DEG C, mixing speed 800r/min when, in above-mentioned prepared calcium hydroxide suspension add Polyethylene Glycol vinegar, titanium dioxide, stirring 30min obtain mixed solution；
(7) in mixed solution, carbon dioxide compression gas is passed into, the pH value making mixed solution progressively decreases to 7.0, and carbonization reaches terminal, prepares composite calcium carbonate slurry, composite calcium carbonate slurry is put in holding vessel and carry out ageing, make the pH value of composite calcium carbonate slurry be stablized；
(8) in described composite calcium carbonate slurry, add the product of auxiliary agent and step (3), be injected in the centrifuge of operation after continuous stirring 3h and carry out dehydration, to not having serosity only to throw away, then dry；
(9) drip inorganic dehydroamino acid continuously with dosing pump and composite calcium carbonate granule is carried out surface treatment, finally calcium carbonate is separated with hot blast, sieving screens out coarse granule, obtains finished product after being crushed to 400 orders.
Embodiment 2
The calcium carbonate of a kind of steam power plant Special desulfurizing denitration, includes according to the raw material of weight portion: limestone 90 parts, activated carbon 90 parts, sepiolite powder 90 parts, titanium dioxide 8 parts, iron powder 2.5 parts, macrogol ester 3.5 parts, oxidant 4.5 parts, magnesium carbonate 18 parts, aluminium sesquioxide 45 parts, ferroso-ferric oxide 11 parts, chitosan 35 parts, 11 parts of magnesium chloride, magnesium nitrate 9 parts, clay 8 parts, 11 parts of rice husk, petroleum sodium sulfonate 1.2 parts, auxiliary agent 20.8 parts；Described auxiliary agent includes according to the raw material of weight portion: montmorillonite powder 6 parts, silica 1 .2 part, jade powder 6 parts, zinc gluconate 1.2 parts, magnesium oxide 3.2 parts, 3.2 parts of flour.
The preparation method of the calcium carbonate of described steam power plant Special desulfurizing denitration, specifically comprises the following steps that
(1) each raw material is weighed according to weight portion；
(2) being added by flour in the water of 15 parts, pasty state is stirred in heating, adds montmorillonite powder, silicon dioxide, jade powder, zinc gluconate and magnesium oxide, make pureed, be re-fed in calcining furnace at 450 DEG C and calcine 4-6h, after cooling, it is ground into the powder of 150 orders, obtains auxiliary agent standby；
(3) rice husk is sent in retort together with clay, at 650 DEG C, carbonization processes 2h, take out, furnishing pureed in the water of 400 parts is added together with activated carbon, sepiolite powder, iron powder, magnesium carbonate, aluminium sesquioxide, ferroso-ferric oxide, chitosan, magnesium chloride, magnesium nitrate and petroleum sodium sulfonate, heating is to 90 DEG C, grinding to form 250 order slurries, it is neutral for regulating pH value, dry for standby；
(4) limestone is placed in exsiccator, then heat to 100 DEG C of dry 3h, more dried limestone is put in rotary kiln, be warming up to 1100 DEG C after the preheating of preheated device and be calcined, calcining is lowered the temperature then through cooler after terminating, and is drawn off by the calcium oxide of generation when temperature is down to 100 DEG C；
(5) joining in reactor by the calcium oxide of preparation, be subsequently adding the water of 5 times of weight, be warming up to 80 DEG C under stirring, react 30min at this temperature, reaction terminates rear cooling down, obtains calcium hydroxide suspension；
(6) 40 DEG C, mixing speed 900r/min when, in above-mentioned prepared calcium hydroxide suspension add Polyethylene Glycol vinegar, titanium dioxide, stirring 40min obtain mixed solution；
(7) in mixed solution, carbon dioxide compression gas is passed into, the pH value making mixed solution progressively decreases to 7.0, and carbonization reaches terminal, prepares composite calcium carbonate slurry, composite calcium carbonate slurry is put in holding vessel and carry out ageing, make the pH value of composite calcium carbonate slurry be stablized；
(8) in described composite calcium carbonate slurry, add the product of auxiliary agent and step (3), be injected in the centrifuge of operation after continuous stirring 4h and carry out dehydration, to not having serosity only to throw away, then dry；
(9) drip inorganic dehydroamino acid continuously with dosing pump and composite calcium carbonate granule is carried out surface treatment, finally calcium carbonate is separated with hot blast, sieving screens out coarse granule, obtains finished product after being crushed to 450 orders.
Embodiment 3
The calcium carbonate of a kind of steam power plant Special desulfurizing denitration, includes according to the raw material of weight portion: limestone 100 parts, activated carbon 100 parts, sepiolite powder 100 parts, titanium dioxide 10 parts, iron powder 3 parts, macrogol ester 4 parts, oxidant 5 parts, magnesium carbonate 20 parts, aluminium sesquioxide 50 parts, ferroso-ferric oxide 12 parts, chitosan 40 parts, 12 parts of magnesium chloride, magnesium nitrate 10 parts, clay 10 parts, 12 parts of rice husk, petroleum sodium sulfonate 1.5 parts, auxiliary agent 26 parts；Described auxiliary agent includes according to the raw material of weight portion: montmorillonite powder 8 parts, silica 1 .5 part, jade powder 8 parts, zinc gluconate 1.5 parts, magnesium oxide 3.5 parts, 3.5 parts of flour.
The preparation method of the calcium carbonate of described steam power plant Special desulfurizing denitration, specifically comprises the following steps that
(1) each raw material is weighed according to weight portion；
(2) being added by flour in the water of 20 parts, pasty state is stirred in heating, adds montmorillonite powder, silicon dioxide, jade powder, zinc gluconate and magnesium oxide, make pureed, be re-fed in calcining furnace at 500 DEG C and calcine 6h, after cooling, it is ground into the powder of 200 orders, obtains auxiliary agent standby；
(3) rice husk is sent in retort together with clay, at 700 DEG C, carbonization processes 2.5h, take out, furnishing pureed in the water of 500 parts is added together with activated carbon, sepiolite powder, iron powder, magnesium carbonate, aluminium sesquioxide, ferroso-ferric oxide, chitosan, magnesium chloride, magnesium nitrate and petroleum sodium sulfonate, heating is to 100 DEG C, grinding to form 300 order slurries, it is neutral for regulating pH value, dry for standby；
(4) limestone is placed in exsiccator, then heat to 120 DEG C of dry 4h, more dried limestone is put in rotary kiln, be warming up to 1200 DEG C after the preheating of preheated device and be calcined, calcining is lowered the temperature then through cooler after terminating, and is drawn off by the calcium oxide of generation when temperature is down to 105 DEG C；
(5) joining in reactor by the calcium oxide of preparation, be subsequently adding the water of 7 times of weight, be warming up to 90 DEG C under stirring, react 40min at this temperature, reaction terminates rear cooling down, obtains calcium hydroxide suspension；
(6) 50 DEG C, mixing speed 1000r/min when, in above-mentioned prepared calcium hydroxide suspension add Polyethylene Glycol vinegar, titanium dioxide, stirring 50min obtain mixed solution；
(7) in mixed solution, carbon dioxide compression gas is passed into, the pH value making mixed solution progressively decreases to 7.0, and carbonization reaches terminal, prepares composite calcium carbonate slurry, composite calcium carbonate slurry is put in holding vessel and carry out ageing, make the pH value of composite calcium carbonate slurry be stablized；
(8) in described composite calcium carbonate slurry, add the product of auxiliary agent and step (3), be injected in the centrifuge of operation after continuous stirring 5h and carry out dehydration, to not having serosity only to throw away, then dry；
(9) drip inorganic dehydroamino acid continuously with dosing pump and composite calcium carbonate granule is carried out surface treatment, finally calcium carbonate is separated with hot blast, sieving screens out coarse granule, obtains finished product after being crushed to 500 orders.
Embodiment 4
The calcium carbonate of a kind of steam power plant Special desulfurizing denitration, includes according to the raw material of weight portion: limestone 110 parts, activated carbon 110 parts, sepiolite powder 110 parts, titanium dioxide 12 parts, iron powder 3.5 parts, macrogol ester 4.5 parts, oxidant 5.5 parts, magnesium carbonate 22 parts, aluminium sesquioxide 55 parts, ferroso-ferric oxide 13 parts, chitosan 45 parts, 14 parts of magnesium chloride, magnesium nitrate 11 parts, clay 12 parts, 13 parts of rice husk, petroleum sodium sulfonate 1.8 parts, auxiliary agent 29.2 parts；Described auxiliary agent includes according to the raw material of weight portion: montmorillonite powder 9 parts, silica 1 .8 part, jade powder 9 parts, zinc gluconate 1.8 parts, magnesium oxide 3.8 parts, 3.8 parts of flour.
The preparation method of the calcium carbonate of described steam power plant Special desulfurizing denitration is with embodiment 2.
Embodiment 5
The calcium carbonate of a kind of steam power plant Special desulfurizing denitration, includes according to the raw material of weight portion: limestone 120 parts, activated carbon 120 parts, sepiolite powder 120 parts, titanium dioxide 15 parts, iron powder 4 parts, macrogol ester 5 parts, oxidant 6 parts, magnesium carbonate 25 parts, aluminium sesquioxide 60 parts, ferroso-ferric oxide 14 parts, chitosan 50 parts, 15 parts of magnesium chloride, magnesium nitrate 12 parts, clay 15 parts, 14 parts of rice husk, petroleum sodium sulfonate 2 parts, auxiliary agent 32 parts；Described auxiliary agent includes according to the raw material of weight portion: montmorillonite powder 10 parts, silicon dioxide 2 parts, jade powder 10 parts, zinc gluconate 2 parts, magnesium oxide 4 parts, 4 parts of flour.
The preparation method of the calcium carbonate of described steam power plant Special desulfurizing denitration is with embodiment 2.
Sulfur dioxide in the industrial smoke of steam power plant and nitrogen oxides can be removed by the present invention simultaneously, desulphurization plant is installed additional and denitration device administers that existing investment is high with operating cost, floor space is big and the problem of system complex respectively for overcoming sulfur dioxide and nitrogen oxides in current industrial smoke to be typically employed in boiler tail, the liquid phase realizing the sulfur dioxide in industrial smoke and nitrogen oxides is administered simultaneously, it is possible to achieve the desulfuration efficiency of more than 95% and the denitration efficiency of more than 80%.The flue gas desulfurization and denitrification equipment using present absorbent has simple in construction, investment and operating cost is low, floor space is little, and stable, product is disposable, it is simple to the features such as popularization and application.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, it is also possible under the premise without departing from this patent objective, make various change.
Claims (4)
1. the calcium carbonate of steam power plant's Special desulfurizing denitration, it is characterized in that, include according to the raw material of weight portion: limestone 80-120 part, activated carbon 80-120 part, sepiolite powder 80-120 part, titanium dioxide 5-15 part, iron powder 2-4 part, macrogol ester 3-5 part, oxidant 4-6 part, magnesium carbonate 15-25 part, aluminium sesquioxide 40-60 part, ferroso-ferric oxide 10-14 part, chitosan 30-50 part, magnesium chloride 10-15 part, magnesium nitrate 8-12 part, clay 5-15 part, rice husk 10-14 part, petroleum sodium sulfonate 1-2 part, auxiliary agent 18-32 part；Described auxiliary agent includes according to the raw material of weight portion: montmorillonite powder 5-10 part, silica 1-2 parts, jade powder 5-10 part, zinc gluconate 1-2 part, magnesium oxide 3-4 part, flour 3-4 part.
2. the calcium carbonate of steam power plant according to claim 1 Special desulfurizing denitration, it is characterized in that, include according to the raw material of weight portion: limestone 90-110 part, activated carbon 90-110 part, sepiolite powder 90-110 part, titanium dioxide 8-12 part, iron powder 2.5-3.5 part, macrogol ester 3.5-4.5 part, oxidant 4.5-5.5 part, magnesium carbonate 18-22 part, aluminium sesquioxide 45-55 part, ferroso-ferric oxide 11-13 part, chitosan 35-45 part, magnesium chloride 11-14 part, magnesium nitrate 9-11 part, clay 8-12 part, rice husk 11-13 part, petroleum sodium sulfonate 1.2-1.8 part, auxiliary agent 20.8-29.2 part；Described auxiliary agent includes according to the raw material of weight portion: montmorillonite powder 6-9 part, silica 1 .2-1.8 part, jade powder 6-9 part, zinc gluconate 1.2-1.8 part, magnesium oxide 3.2-3.8 part, flour 3.2-3.8 part.
3. the calcium carbonate of steam power plant according to claim 1 Special desulfurizing denitration, it is characterized in that, include according to the raw material of weight portion: limestone 100 parts, activated carbon 100 parts, sepiolite powder 100 parts, titanium dioxide 10 parts, iron powder 3 parts, macrogol ester 4 parts, oxidant 5 parts, magnesium carbonate 20 parts, aluminium sesquioxide 50 parts, ferroso-ferric oxide 12 parts, chitosan 40 parts, 12 parts of magnesium chloride, magnesium nitrate 10 parts, clay 10 parts, 12 parts of rice husk, petroleum sodium sulfonate 1.5 parts, auxiliary agent 26 parts；Described auxiliary agent includes according to the raw material of weight portion: montmorillonite powder 8 parts, silica 1 .5 part, jade powder 8 parts, zinc gluconate 1.5 parts, magnesium oxide 3.5 parts, 3.5 parts of flour.
4. one kind as arbitrary in claim 1-3 as described in the preparation method of calcium carbonate of steam power plant's Special desulfurizing denitration, it is characterised in that specifically comprise the following steps that
(1) each raw material is weighed according to weight portion；
(2) flour is added in the water of 10-20 part, pasty state is stirred in heating, add montmorillonite powder, silicon dioxide, jade powder, zinc gluconate and magnesium oxide, make pureed, it is re-fed in calcining furnace at 400-500 DEG C and calcines 4-6h, after cooling, it is ground into the powder of 100-200 order, obtains auxiliary agent standby；
(3) rice husk is sent in retort together with clay, at 600-700 DEG C, carbonization processes 1.5-2.5h, take out, furnishing pureed in the water of 300-500 part is added together with activated carbon, sepiolite powder, iron powder, magnesium carbonate, aluminium sesquioxide, ferroso-ferric oxide, chitosan, magnesium chloride, magnesium nitrate and petroleum sodium sulfonate, heating is to 80-100 DEG C, grinding to form 200-300 order slurry, it is neutral for regulating pH value, dry for standby；
(4) limestone is placed in exsiccator, then heat to 80-120 DEG C of dry 2-4h, again dried limestone is put in rotary kiln, it is warming up to 1000-1200 DEG C after the preheating of preheated device to be calcined, calcining is lowered the temperature then through cooler after terminating, and is drawn off by the calcium oxide of generation when temperature is down to 95-105 DEG C；
(5) joining in reactor by the calcium oxide of preparation, be subsequently adding the water of 3-7 times of weight, be warming up to 70-90 DEG C under stirring, react 20-40min at this temperature, reaction terminates rear cooling down, obtains calcium hydroxide suspension；
(6) 30-50 DEG C, mixing speed 800-1000r/min when, in above-mentioned prepared calcium hydroxide suspension add Polyethylene Glycol vinegar, titanium dioxide, stirring 30-50min obtain mixed solution；
(7) in mixed solution, carbon dioxide compression gas is passed into, the pH value making mixed solution progressively decreases to 7.0, and carbonization reaches terminal, prepares composite calcium carbonate slurry, composite calcium carbonate slurry is put in holding vessel and carry out ageing, make the pH value of composite calcium carbonate slurry be stablized；
(8) in described composite calcium carbonate slurry, add the product of auxiliary agent and step (3), be injected in the centrifuge of operation after continuous stirring 3-5h and carry out dehydration, to not having serosity only to throw away, then dry；
(9) drip inorganic dehydroamino acid continuously with dosing pump and composite calcium carbonate granule is carried out surface treatment, finally calcium carbonate is separated with hot blast, sieving screens out coarse granule, obtains finished product after being crushed to 400-500 order.
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| CN107998869A (en) * | 2017-11-17 | 2018-05-08 | 王彦霖 | A kind of dry type desulfurizing denitration material and preparation method thereof |
| CN111054306A (en) * | 2019-11-19 | 2020-04-24 | 南京师范大学 | Modified biochar and preparation method and application method thereof |
| CN113058368A (en) * | 2021-04-27 | 2021-07-02 | 宁夏瑞银铅资源再生有限公司 | Lead regeneration smelting tail gas seals desulfurization dust removal circulation system |
| CN113462173A (en) * | 2021-06-18 | 2021-10-01 | 武汉理工大学 | Modified asphalt doped with rubber powder and preparation method thereof |
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| CN104923065A (en) * | 2015-05-28 | 2015-09-23 | 杭州鑫磊脱硫剂有限公司 | Desulfurizing agent comprising high-density composite calcium carbonate and preparation method of desulfurizing agent |
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| CN103736389A (en) * | 2013-12-12 | 2014-04-23 | 芜湖中路实业有限责任公司 | Flue gas denitration desulfurizer and preparation method thereof |
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| CN104923065A (en) * | 2015-05-28 | 2015-09-23 | 杭州鑫磊脱硫剂有限公司 | Desulfurizing agent comprising high-density composite calcium carbonate and preparation method of desulfurizing agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107998869A (en) * | 2017-11-17 | 2018-05-08 | 王彦霖 | A kind of dry type desulfurizing denitration material and preparation method thereof |
| CN111054306A (en) * | 2019-11-19 | 2020-04-24 | 南京师范大学 | Modified biochar and preparation method and application method thereof |
| CN113058368A (en) * | 2021-04-27 | 2021-07-02 | 宁夏瑞银铅资源再生有限公司 | Lead regeneration smelting tail gas seals desulfurization dust removal circulation system |
| CN113462173A (en) * | 2021-06-18 | 2021-10-01 | 武汉理工大学 | Modified asphalt doped with rubber powder and preparation method thereof |
| CN113462173B (en) * | 2021-06-18 | 2022-09-20 | 武汉理工大学 | Modified asphalt doped with rubber powder and preparation method thereof |
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Application publication date: 20160713 |